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EBSCO provides free research databases covering a variety of subjects for students, researchers and librarians.

Exploring Race in Society

This free research database offers essential content covering important issues related to race in society today. Essays, articles, reports and other reliable sources provide an in-depth look at the history of race and provide critical context for learning more about topics associated with race, ethnicity, diversity and inclusiveness.

EBSCO Open Dissertations

EBSCO Open Dissertations is a collaboration between EBSCO and BiblioLabs to increase traffic and discoverability of ETD research. You can join the movement and add your theses and dissertations to the database, making them freely available to researchers everywhere.

GreenFILE is a free research database covering all aspects of human impact to the environment. Its collection of scholarly, government and general-interest titles includes content on global warming, green building, pollution, sustainable agriculture, renewable energy, recycling, and more.

Library, Information Science and Technology Abstracts

Library, Information Science & Technology Abstracts (LISTA) is a free research database for library and information science studies. LISTA provides indexing and abstracting for hundreds of key journals, books, research reports. It is EBSCO's intention to provide access to this resource on a continual basis.

Teacher Reference Center

A complimentary research database for teachers, Teacher Reference Center (TRC) provides indexing and abstracts for more than 230 peer-reviewed journals.

European Views of the Americas: 1493 to 1750

European Views of the Americas: 1493 to 1750 is a free archive of indexed publications related to the Americas and written in Europe before 1750. It includes thousands of valuable primary source records covering the history of European exploration as well as portrayals of Native American peoples.

The Directory of Open Access Journals

Directory of Open Access Journals

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80 languages

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DOAJ is a unique and extensive index of diverse open access journals from around the world, driven by a growing community, and is committed to ensuring quality content is freely available online for everyone.

DOAJ is committed to keeping its services free of charge, including being indexed, and its data freely available.

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Free Publicly-Accessible Databases

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The following databases were selected not only for their availablity to the general public but also because of their broad appeal and scope, and access to full-text resources.

African Journals Online A service to provide access to African published research, and increase worldwide knowledge of indigenous scholarship. It's published in Africa and cover the full range of academic disciplines.
AGRICOLA This catalog of the U.S. National Agriculatural Library (NAL) provides citations to agricultural literature. The NAL houses one of the world's largest and most accessible agricultural information collections and advances access to global information for agriculture.
AIDSinfo Access to wide-ranging Federal resources on HIV/AIDS clinical research, HIV treatment and prevention, and medical practice guidelines for health care providers and consumers.
American Heritage Dictionary of the English Language (4th ed., 2000) [UCSB call #: PE 1628 .A623 2000]
Anatomy of the Human Body by Henry Gray (20th ed., 1918) [UCSB has later editions at: QM 23.2 .G73]
The Boston Cooking School Cookbook by Fannie Farmer (1918)
Cambridge History of English and American Literature (1907-1921) [various call numbers at UCSB]
The Columbia Encyclopedia (6th ed., 2001) [UCSB call #: Ref AG 5 .C725 2000]
Columbia Gazetteer of North America (2000) [UCSB call #: Ref E 35 .C65 2000]
Familiar Quotations by John Bartlett (10th ed., 1919) [UCSB call #: Spec. Coll. PN 6081 .B29 1902; later editions at: PN 6081 .B29 and in Reference at: PN 6081 .B27]
Robert's Rules of Order Revised (1915) [UCSB call #: Ref JF515 .W42 for latest edition]
Roget's II: The New Thesaurus (3rd ed., 1995) [UCSB call #: Ref PE1591 .B35]
Simpson's Contemporary Quotations (1988) "The Most Notable Quotes, 1950-1988" [UCSB call #: Ref PN 6083 .S53 1988]
The World Factbook (2008)
BioMed Central Publisher of 187 peer-reviewed open access journals.
bizjournals Features local business news from around the nation, top business stories from American City's print editions and industry-specific news from more than 40 industries with access to each of the 42 local business sites; contains 1.25 million business news articles published since 1996.
BPubs.com The Business Publications Search Engine Organized by various business categories, this site provides links to full text business articles on the web.
Chaucer Bibliography Online The Online Chaucer Bibliography includes materials from the Annotated Chaucer Bibliography published annually in Studies in the Age of Chaucer (call number: PR 1901 .S78) and is sponsored by the NCS and the library of the University of Texas at San Antonio. (Note: "Title" searching is searching for the beginning of the title, not for keywords in the title.
Chemistry Central Publishing peer-reviewed open access research in chemistry, from BioMed Central - the leading biomedical open access publisher. This site features chemistry-related articles published in Chemistry Central Journal, BioMed Central journals and independent journals utilizing BioMed Central's open access publishing services. All original research articles published by, or in cooperation with, Chemistry Central are made freely and permanently accessible online immediately upon publication.
ClinicalTrials.gov A registry of federally and privately supported clinical trials conducted in the United States and around the world. ClinicalTrials.gov gives you information about a trial's purpose, who may participate, locations, and phone numbers for more details. This information should be used in conjunction with advice from health care professionals.
Core Documents of U. S. Democracy To provide American citizens direct online access to the basic Federal Government documents that define our democratic society, a core group of current and historical Government publications is being made available for free, permanent, public access. In addition to full ASCII text, some documents, such as the Constitution and Declaration of Independence, are available as scanned images of the original manuscripts. Document texts range from the Articles of Confederation to the current United States Government Manual, Statistical Abstracts and Code of Federal Regulations.
Dictionary.com Dictionary.com provides searchable access to several dictionaries, most notably, the American Heritage Dictionary , 3rd ed. (1996,1992) (in print at PE 1628 .A623 1992), plus Roget's Thesaurus, and links to a number of other dictionary sites on the web.
Directory of Open Access Journals This service covers free, full text, quality controlled scientific and scholarly journals. We aim to cover all subjects and languages. Covers nearly 150,000 articles in 834 searchable journals.
Energy Citations Database Free access to over 2.3 million science research citations with access to over 179,000 electronic documents, primarily from 1943 forward, made publicly available by the U.S. Department of Energy (DOE). ECD includes scientific and technical research results in disciplines of interest to DOE such as chemistry, physics, materials, environmental science, geology, engineering, mathematics, climatology, oceanography, computer science and related disciplines. It includes bibliographic citations to report literature, conference papers, journal articles, books, dissertations, and patents.
English Broadside Ballad Archive Created by the Early Modern Center in the English Department at UCSB, the English Broadside Ballad Archive (formerly, Pepys Ballad Archive) offers a fully-searchable database of over 1,800 broadside ballads, mostly of the seventeenth century and mostly in black-letter print. The ballads were collected by Samuel Pepys into five albums, which are held at Magdalene College, Cambridge. The ballads in the database are accessible as facsimiles, as facsimile transcriptions, and as recorded songs. Also provided are full citations for the ballads as well as background essays about ballad culture of the period and Pepys’s categories for organizing his collection.
Espacenet (European Patent Office) The European Patent Office's Esp@acenet provides detailed searching of EPO and PCT patent applications for the last 24 months, and worldwide patent documents searchable by patent number as early as 1920 for some issuing nations.
FWS National Image Library U.S. Fish & Wildlife Service's online collection of public domain still photographs, containing still photo images of wildlife, plants, National Wildlife Refuges and other scenics, as well as wildlife management work.
Google Scholar Google Scholar enables you to search specifically for scholarly literature, including peer-reviewed papers, theses, books, preprints, abstracts and technical reports from all broad areas of research. Use Google Scholar to find articles from a wide variety of academic publishers, professional societies, preprint repositories and universities, as well as scholarly articles available across the web.
Govinfo From the U.S. Government Printing Office: provides free electronic access to a wealth of important information products produced by the Federal Government. The information provided on this site is the official, published version.
Hearth Hearth is a core electronic collection of books and journals in Home Economics and related disciplines. Titles published between 1850 and 1950 were selected and ranked by teams of scholars for their great historical importance. The first phase of this project focused on books published between 1850 and 1925 and a small number of journals. Future phases of the project will include books published between 1926 and 1950, as well as additional journals. The full text of these materials, as well as bibliographies and essays on the wide array of subjects relating to Home Economics, are all freely accessible on this site.
Encyclopedia.com Contains nearly 200,000 brief entries from the Britannica , Oxford University Press , and Columbia Encyclopedia .
HighWire Press Free full-text articles in science disciplines, from HighWire Press at Stanford University.
ibiblio One of the largest "collections of collections" on the Internet, ibiblio.org is a conservancy of freely available information, including software, music, literature, art, history, science, politics, and cultural studies. ibiblio.org is a collaboration of the School of Information and Library Science and the School of Journalism and Mass Communication at The University of North Carolina - Chapel Hill.
InfoPlease Search the Information Please almanac and timeline, their atlas, the Columbia Encyclopedia, a dictionary, and a thesaurus. Information Please has been providing authoritative answers to all kinds of factual questions since 1938.
Audio Archive The Archive contains over a hundred thousand free digital recordings ranging from alternative news programming, to Grateful Dead concerts, to Old Time Radio shows, to book and poetry readings, to original music uploaded by our users. Many of these audios and MP3s are available for free download.
Live Music Archive The Internet Archive has teamed up with etree wiki to preserve and archive as many live concerts as possible for current and future generations to enjoy. All music in this Collection is from trade-friendly artists and is strictly noncommercial, both for access here and for any further distribution. Artists' commercial releases are off-limits. This collection is maintained by the etree.org community.
Moving Images Collections This collection of thousands of digital movies is free and open for everyone to use. It includes the Prelinger Archive, a collection of nearly 2,000 advertising and educational films from 1927 to the present.
Text Archive This collection is open to the community for the contribution of any type of text.
Library of Congress Digital Collections This Library of Congress project provides access to a large number of LoC collections, searchable and browsable by subject and title, including a large quantity of digitized primary source material.
MagPortal "Find individual articles from many free magazines by browsing the categories or using the search engine."
Making of America: at Cornell University and University of Michigan Hosted at Cornell University and the University of Michigan, Making of America (MOA) is a digital library of primary sources in American social history from the antebellum period through reconstruction. The collection is particularly strong in the subject areas of education, psychology, American history, sociology, religion, and science and technology. The Cornell collection currently contains 267 monograph volumes and over 100,000 journal articles with 19th century imprints while the Michigan collection contains approximately 10,000 books and 50,000 journal articles with 19th century imprints, estimated at over 3% of all American monographs published in the 19th century. All are in the form of searchable scanned images.
MedKnow Publications The largest publisher in India for academic and scientific biomedical journals, publishing high quality peer-reviewed scholarly journals. Medknow, with over 40 print + online journals, is probably the largest open access publisher of print journals in the world and provides immediate free access to the electronic editions of the journals.
MedlinePlus "Extensive information from the National Institutes of Health and other trusted sources on over 740 topics on conditions, diseases and wellness. There are also lists of hospitals and physicians, a medical encyclopedia and a medical dictionary, health information in Spanish, extensive information on prescription and nonprescription drugs, health information from the media, and links to thousands of clinical trials."
Online Exhibits Features high resolution images of a variety of manuscripts, artworks and photographs from the U.S. National Archives.
Featured Documents
America's Historical Documents The National Archives preserves and provides access to the records of the Federal Government. Here is a sample of these records, from our most celebrated milestones to little-known surprises.
Educators & Students: Primary Sources and Activities A large number of collections of primary documents and images arranged for use by teachers of history, civics or use of government documents.
National Forest Service Library Catalog of records to Forest Service Research publications dating back to 1904. Includes almost 6,000 full-text publications.
National Service Center for Environmental Publications A database of over 24,000 full-text U.S. EPA documents
NCJRS Virtual Library (National Criminal Justice Reference Service) Access to more than 3,500 full text publications and more than 190,000 abstracts, or summaries, of publications on this site and from NCJRS partner agency websites.
O*NET OnLine From the U.S. Department of Labor, the Occupational Information Network is a comprehensive database of worker attributes and job characteristics. The O*NET database includes information on skills, abilities, knowledges, work activities, and interests associated with occupations. Information in O*NET is available for over 800 occupations. Each occupational title and code is based on the most current version of the Standard Occupational Classification system.O*NET replaces the Dictionary of Occupational Titles (DOT).
Online Archive of California The Online Archive of California is a collaborative project to create a searchable online union database of finding aids to archival collections. This database includes the finding aids to repositories from more than 90 institutions statewide including all nine UC campuses, and is continuing to expand. Finding aids provide detailed descriptions of collections, their intellectual organization and, at varying levels of analysis, of individual items in the collections. A small but increasing number of the finding aids contain links to online digital versions of the source material.
The Online Books Page "Listing over 25,000 free books on the Web," by author, title, subject, and other features, such as: "A Celebration of Women Writers," "Banned Books Online," "Prize Winners Online," "Foreign Language," and "Specialty" by subject. This site also links to extensive directories which list thousands more online books.
OSTI.gov Search the U.S. Dept. of Energy's scientific and technical research reports in the sciences including biology, environmental sciences, physics, energy, and other topics.
Paper of Record Building the world's largest searchable archive of historical newspapers. Over 21 million images in the collection so far. Searchable newspaper image documents presented in their original published form.
Project Gutenberg Project Gutenberg is one of the earliest attempts to provide widespread access to public domain books via the Internet. As of 2002, it offers about 6,200 works, adding about 150 per month. Files are in plain ASCII text or in zipped ASCII text, available from a number of mirror sites around the world. The Project Gutenberg catalog is searchable by author and title. Author and title lists may be downloaded by FTP.
PLoS: Public Library of Science A nonprofit organization of scientists and physicians committed to making the world's scientific and medical literature a freely available public resource.
PubMed Central (PMC) The U.S. National Institutes of Health (NIH) free digital archive of biomedical and life sciences journal literature.
Science.gov Science.gov is a gateway to over 50 million pages of authoritative selected science information provided by U.S. government agencies, including research and development results.
USPTO Patent Database The U.S. Patent and Trademark Office (USPTO)'s Patent Databases allows searching of the bibliographic data (titles, inventors, assignees, class codes, references, etc.) or full text in US patents issued since 1976.
USPTO Trademark Database The U.S. Patent and Trademark Office (USPTO)'s Trademark Electronic Search System (TESS) allows searching of the key data (titles, owners, relevant dates) in current Federal trademarks and inactive ones back to 1984. Results display the trademark text data and, in many cases, the images for graphic trademarks. It does not include state or foreign trademarks.

Updated: 10/12/20

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Make an impact and build your research profile in the open with ScienceOpen

Search and discover relevant research in over 95 million Open Access articles and article records
Share your expertise and get credit by publicly reviewing any article
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Create a Journal powered by ScienceOpen

Launching a new open access journal or an open access press? ScienceOpen now provides full end-to-end open access publishing solutions – embedded within our smart interactive discovery environment. A modular approach allows open access publishers to pick and choose among a range of services and design the platform that fits their goals and budget.

Continue reading “Create a Journal powered by ScienceOpen”

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ScienceOpen provides researchers with a wide range of tools to support their research – all for free. Here is a short checklist to make sure you are getting the most of the technological infrastructure and content that we have to offer. What can a researcher do on ScienceOpen? Continue reading “What can a Researcher do on ScienceOpen?”

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A comprehensive bibliographic database of the world’s scholarly literature

The world’s largest collection of open access research papers, machine access to our vast unique full text corpus, core features, indexing the world’s repositories.

We serve the global network of repositories and journals

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We provide both metadata and full text access to our comprehensive collection through our APIs and Datasets

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OAI identifiers are unique identifiers minted cost-free by repositories. Ensure that your repository is correctly configured, enabling the CORE OAI Resolver to redirect your identifiers to your repository landing pages.

OAI IDs provide a cost-free option for assigning Persistent Identifiers (PIDs) to your repository records. Learn more.

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21 Legit Research Databases for Free Journal Articles in 2024

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Written by Scribendi

Has this ever happened to you? While looking for websites for research, you come across a research paper site that claims to connect academics to a peer-reviewed article database for free.

Intrigued, you search for keywords related to your topic, only to discover that you must pay a hefty subscription fee to access the service. After the umpteenth time being duped, you begin to wonder if there's even such a thing as free journal articles.

Subscription fees and paywalls are often the bane of students and academics, especially those at small institutions who don't provide access to many free article directories and repositories.

Whether you're working on an undergraduate paper, a PhD dissertation, or a medical research study, we want to help you find tools to locate and access the information you need to produce well-researched, compelling, and innovative work.

Below, we discuss why peer-reviewed articles are superior and list out the best free article databases to use in 2024.

Download Our Free Research Database Roundup PDF

Why peer-reviewed scholarly journal articles are more authoritative.

Determining what sources are reliable can be challenging. Peer-reviewed scholarly journal articles are the gold standard in academic research. Reputable academic journals have a rigorous peer-review process.

The peer review process provides accountability to the academic community, as well as to the content of the article. The peer review process involves qualified experts in a specific (often very specific) field performing a review of an article's methods and findings to determine things like quality and credibility.

Peer-reviewed articles can be found in peer-reviewed article databases and research databases, and if you know that a database of journals is reliable, that can offer reassurances about the reliability of a free article. Peer review is often double blind, meaning that the author removes all identifying information and, likewise, does not know the identity of the reviewers. This helps reviewers maintain objectivity and impartiality so as to judge an article based on its merit.

Where to Find Peer-Reviewed Articles

Peer-reviewed articles can be found in a variety of research databases. Below is a list of some of the major databases you can use to find peer-reviewed articles and other sources in disciplines spanning the humanities, sciences, and social sciences.

What Are Open Access Journals?

An open access (OA) journal is a journal whose content can be accessed without payment. This provides scholars, students, and researchers with free journal articles. OA journals use alternate methods of funding to cover publication costs so that articles can be published without having to pass those publication costs on to the reader.

Some of these funding models include standard funding methods like advertising, public funding, and author payment models, where the author pays a fee in order to publish in the journal. There are OA journals that have non-peer-reviewed academic content, as well as journals that focus on dissertations, theses, and papers from conferences, but the main focus of OA is peer-reviewed scholarly journal articles.

The internet has certainly made it easier to access research articles and other scholarly publications without needing access to a university library, and OA takes another step in that direction by removing financial barriers to academic content.

Choosing Wisely

Features of legitimate oa journals.

There are things to look out for when trying to decide if a free publication journal is legitimate:

Mission statement —The mission statement for an OA journal should be available on their website.

Publication history —Is the journal well established? How long has it been available?

Editorial board —Who are the members of the editorial board, and what are their credentials?

Indexing —Can the journal be found in a reliable database?

Peer review —What is the peer review process? Does the journal allow enough time in the process for a reliable assessment of quality?

Impact factor —What is the average number of times the journal is cited over a two-year period?

Features of Illegitimate OA Journals

There are predatory publications that take advantage of the OA format, and they are something to be wary of. Here are some things to look out for:

Contact information —Is contact information provided? Can it be verified?

Turnaround —If the journal makes dubious claims about the amount of time from submission to publication, it is likely unreliable.

Editorial board —Much like determining legitimacy, looking at the editorial board and their credentials can help determine illegitimacy.

Indexing —Can the journal be found in any scholarly databases?

Peer review —Is there a statement about the peer review process? Does it fit what you know about peer review?

How to Find Scholarly Articles

Identify keywords.

Keywords are included in an article by the author. Keywords are an excellent way to find content relevant to your research topic or area of interest. In academic searches, much like you would on a search engine, you can use keywords to navigate through what is available to find exactly what you're looking for.

Authors provide keywords that will help you easily find their article when researching a related topic, often including general terms to accommodate broader searches, as well as some more specific terms for those with a narrower scope. Keywords can be used individually or in combination to refine your scholarly article search.

Narrow Down Results

Sometimes, search results can be overwhelming, and searching for free articles on a journal database is no exception, but there are multiple ways to narrow down your results. A good place to start is discipline.

What category does your topic fall into (psychology, architecture, machine learning, etc.)? You can also narrow down your search with a year range if you're looking for articles that are more recent.

A Boolean search can be incredibly helpful. This entails including terms like AND between two keywords in your search if you need both keywords to be in your results (or, if you are looking to exclude certain keywords, to exclude these words from the results).

Consider Different Avenues

If you're not having luck using keywords in your search for free articles, you may still be able to find what you're looking for by changing your tactics. Casting a wider net sometimes yields positive results, so it may be helpful to try searching by subject if keywords aren't getting you anywhere.

You can search for a specific publisher to see if they have OA publications in the academic journal database. And, if you know more precisely what you're looking for, you can search for the title of the article or the author's name.

Determining the Credibility of Scholarly Sources

Ensuring that sources are both credible and reliable is crucial to academic research. Use these strategies to help evaluate the usefulness of scholarly sources:

Peer Review : Look for articles that have undergone a rigorous peer-review process. Peer-reviewed articles are typically vetted by experts in the field, ensuring the accuracy of the research findings.

Tip: To determine whether an article has undergone rigorous peer review, review the journal's editorial policies, which are often available on the journal's website. Look for information about the peer-review process, including the criteria for selecting reviewers, the process for handling conflicts of interest, and any transparency measures in place.

Publisher Reputation : Consider the reputation of the publisher. Established publishers, such as well-known academic journals, are more likely to adhere to high editorial standards and publishing ethics.
Author Credentials : Evaluate the credentials and expertise of the authors. Check their affiliations, academic credentials, and past publications to assess their authority in the field.
Citations and References : Examine the citations and references provided in the article. A well-researched article will cite credible sources to support its arguments and findings. Verify the accuracy of the cited sources and ensure they are from reputable sources.
Publication Date : Consider the publication date of the article. While older articles may still be relevant, particularly in certain fields, it is best to prioritize recent publications for up-to-date research and findings.
Journal Impact Factor : Assess the journal's impact factor or other metrics that indicate its influence and reputation within the academic community. Higher impact factor journals are generally considered more prestigious and reliable.

Tip: Journal Citation Reports (JCR), produced by Clarivate Analytics, is a widely used source for impact factor data. You can access JCR through academic libraries or directly from the Clarivate Analytics website if you have a subscription.

Peer Recommendations : Seek recommendations from peers, mentors, or professors in your field. They can provide valuable insights and guidance on reputable sources and journals within your area of study.
Cross-Verification : Cross-verify the information presented in the article with other credible sources. Compare findings, methodologies, and conclusions with similar studies to ensure consistency and reliability.

By employing these strategies, researchers can confidently evaluate the credibility and reliability of scholarly sources, ensuring the integrity of their research contributions in an ever-evolving landscape.

The Top 21 Free Online Journal and Research Databases

Navigating OA journals, research article databases, and academic websites trying to find high-quality sources for your research can really make your head spin. What constitutes a reliable database? What is a useful resource for your discipline and research topic? How can you find and access full-text, peer-reviewed articles?

Fortunately, we're here to help. Having covered some of the ins and outs of peer review, OA journals, and how to search for articles, we have compiled a list of the top 21 free online journals and the best research databases. This list of databases is a great resource to help you navigate the wide world of academic research.

These databases provide a variety of free sources, from abstracts and citations to full-text, peer-reviewed OA journals. With databases covering specific areas of research and interdisciplinary databases that provide a variety of material, these are some of our favorite free databases, and they're totally legit!

CORE is a multidisciplinary aggregator of OA research. CORE has the largest collection of OA articles available. It allows users to search more than 219 million OA articles. While most of these link to the full-text article on the original publisher's site, or to a PDF available for download, five million records are hosted directly on CORE.

CORE's mission statement is a simple and straightforward commitment to offering OA articles to anyone, anywhere in the world. They also host communities that are available for researchers to join and an ambassador community to enhance their services globally. In addition to a straightforward keyword search, CORE offers advanced search options to filter results by publication type, year, language, journal, repository, and author.

CORE's user interface is easy to use and navigate. Search results can be sorted based on relevance or recency, and you can search for relevant content directly from the results screen.

Collection : 219,537,133 OA articles

Other Services : Additional services are available from CORE, with extras that are geared toward researchers, repositories, and businesses. There are tools for accessing raw data, including an API that provides direct access to data, datasets that are available for download, and FastSync for syncing data content from the CORE database.

CORE has a recommender plug-in that suggests relevant OA content in the database while conducting a search and a discovery feature that helps you discover OA versions of paywalled articles. Other features include tools for managing content, such as a dashboard for managing repository output and the Repository Edition service to enhance discoverability.

Good Source of Peer-Reviewed Articles : Yes

Advanced Search Options : Language, author, journal, publisher, repository, DOI, year

2. ScienceOpen

Functioning as a research and publishing network, ScienceOpen offers OA to more than 74 million articles in all areas of science. Although you do need to register to view the full text of articles, registration is free. The advanced search function is highly detailed, allowing you to find exactly the research you're looking for.

The Berlin- and Boston-based company was founded in 2013 to "facilitate open and public communications between academics and to allow ideas to be judged on their merit, regardless of where they come from." Search results can be exported for easy integration with reference management systems.

You can also bookmark articles for later research. There are extensive networking options, including your Science Open profile, a forum for interacting with other researchers, the ability to track your usage and citations, and an interactive bibliography. Users have the ability to review articles and provide their knowledge and insight within the community.

Collection : 74,560,631

Other Services : None

Advanced Search Options : Content type, source, author, journal, discipline

3. Directory of Open Access Journals

A multidisciplinary, community-curated directory, the Directory of Open Access Journals (DOAJ) gives researchers access to high-quality peer-reviewed journals. It has archived more than two million articles from 17,193 journals, allowing you to either browse by subject or search by keyword.

The site was launched in 2003 with the aim of increasing the visibility of OA scholarly journals online. Content on the site covers subjects from science, to law, to fine arts, and everything in between. DOAJ has a commitment to "increase the visibility, accessibility, reputation, usage and impact of quality, peer-reviewed, OA scholarly research journals globally, regardless of discipline, geography or language."

Information about the journal is available with each search result. Abstracts are also available in a collapsible format directly from the search screen. The scholarly article website is somewhat simple, but it is easy to navigate. There are 16 principles of transparency and best practices in scholarly publishing that clearly outline DOAJ policies and standards.

Collection : 6,817,242

Advanced Search Options : Subject, journal, year

4. Education Resources Information Center

The Education Resources Information Center (ERIC) of the Institution of Education Sciences allows you to search by topic for material related to the field of education. Links lead to other sites, where you may have to purchase the information, but you can search for full-text articles only. You can also search only peer-reviewed sources.

The service primarily indexes journals, gray literature (such as technical reports, white papers, and government documents), and books. All sources of material on ERIC go through a formal review process prior to being indexed. ERIC's selection policy is available as a PDF on their website.

The ERIC website has an extensive FAQ section to address user questions. This includes categories like general questions, peer review, and ERIC content. There are also tips for advanced searches, as well as general guidance on the best way to search the database. ERIC is an excellent database for content specific to education.

Collection : 1,292,897

Advanced Search Options : Boolean

5. arXiv e-Print Archive

The arXiv e-Print Archive is run by Cornell University Library and curated by volunteer moderators, and it now offers OA to more than one million e-prints.

There are advisory committees for all eight subjects available on the database. With a stated commitment to an "emphasis on openness, collaboration, and scholarship," the arXiv e-Print Archive is an excellent STEM resource.

The interface is not as user-friendly as some of the other databases available, and the website hosts a blog to provide news and updates, but it is otherwise a straightforward math and science resource. There are simple and advanced search options, and, in addition to conducting searches for specific topics and articles, users can browse content by subject. The arXiv e-Print Archive clearly states that they do not peer review the e-prints in the database.

Collection : 1,983,891

Good Source of Peer-Reviewed Articles : No

Advanced Search Options : Subject, date, title, author, abstract, DOI

6. Social Science Research Network

The Social Science Research Network (SSRN) is a collection of papers from the social sciences community. It is a highly interdisciplinary platform used to search for scholarly articles related to 67 social science topics. SSRN has a variety of research networks for the various topics available through the free scholarly database.

The site offers more than 700,000 abstracts and more than 600,000 full-text papers. There is not yet a specific option to search for only full-text articles, but, because most of the papers on the site are free access, it's not often that you encounter a paywall. There is currently no option to search for only peer-reviewed articles.

You must become a member to use the services, but registration is free and enables you to interact with other scholars around the world. SSRN is "passionately committed to increasing inclusion, diversity and equity in scholarly research," and they encourage and discuss the use of inclusive language in scholarship whenever possible.

Collection : 1,058,739 abstracts; 915,452 articles

Advanced Search Options : Term, author, date, network

7. Public Library of Science

Public Library of Science (PLOS) is a big player in the world of OA science. Publishing 12 OA journals, the nonprofit organization is committed to facilitating openness in academic research. According to the site, "all PLOS content is at the highest possible level of OA, meaning that scientific articles are immediately and freely available to anyone, anywhere."

PLOS outlines four fundamental goals that guide the organization: break boundaries, empower researchers, redefine quality, and open science. All PLOS journals are peer-reviewed, and all 12 journals uphold rigorous ethical standards for research, publication, and scientific reporting.

PLOS does not offer advanced search options. Content is organized by topic into research communities that users can browse through, in addition to options to search for both articles and journals. The PLOS website also has resources for peer reviewers, including guidance on becoming a reviewer and on how to best participate in the peer review process.

Collection : 12 journals

Advanced Search Options : None

8. OpenDOAR

OpenDOAR, or the Directory of Open Access Repositories, is a comprehensive resource for finding free OA journals and articles. Using Google Custom Search, OpenDOAR combs through OA repositories around the world and returns relevant research in all disciplines.

The repositories it searches through are assessed and categorized by OpenDOAR staff to ensure they meet quality standards. Inclusion criteria for the database include requirements for OA content, global access, and categorically appropriate content, in addition to various other quality assurance measures. OpenDOAR has metadata, data, content, preservation, and submission policies for repositories, in addition to two OA policy statements regarding minimum and optimum recommendations.

This database allows users to browse and search repositories, which can then be selected, and articles and data can be accessed from the repository directly. As a repository database, much of the content on the site is geared toward the support of repositories and OA standards.

Collection : 5,768 repositories

Other Services : OpenDOAR offers a variety of additional services. Given the nature of the platform, services are primarily aimed at repositories and institutions, and there is a marked focus on OA in general. Sherpa services are OA archiving tools for authors and institutions.

They also offer various resources for OA support and compliance regarding standards and policies. The publication router matches publications and publishers with appropriate repositories.

There are also services and resources from JISC for repositories for cost management, discoverability, research impact, and interoperability, including ORCID consortium membership information. Additionally, a repository self-assessment tool is available for members.

Advanced Search Options : Name, organization name, repository type, software name, content type, subject, country, region

9. Bielefeld Academic Search Engine

The Bielefeld Academic Search Engine (BASE) is operated by the Bielefeld University Library in Germany, and it offers more than 240 million documents from more than 8,000 sources. Sixty percent of its content is OA, and you can filter your search accordingly.

BASE has rigorous inclusion requirements for content providers regarding quality and relevance, and they maintain a list of content providers for the sake of transparency, which can be easily found on their website. BASE has a fairly elegant interface. Search results can be organized by author, title, or date.

From the search results, items can be selected and exported, added to favorites, emailed, and searched in Google Scholar. There are basic and advanced search features, with the advanced search offering numerous options for refining search criteria. There is also a feature on the website that saves recent searches without additional steps from the user.

Collection : 276,019,066 documents; 9,286 content providers

Advanced Search Options : Author, subject, year, content provider, language, document type, access, terms of reuse

10. Digital Library of the Commons Repository

Run by Indiana University, the Digital Library of the Commons (DLC) Repository is a multidisciplinary journal repository that allows users to access thousands of free and OA articles from around the world. You can browse by document type, date, author, title, and more or search for keywords relevant to your topic.

DCL also offers the Comprehensive Bibliography of the Commons, an image database, and a keyword thesaurus for enhanced search parameters. The repository includes books, book chapters, conference papers, journal articles, surveys, theses and dissertations, and working papers. DCL advanced search features drop-down menus of search types with built-in Boolean search options.

Searches can be sorted by relevance, title, date, or submission date in ascending or descending order. Abstracts are included in selected search results, with access to full texts available, and citations can be exported from the same page. Additionally, the image database search includes tips for better search results.

Collection : 10,784

Advanced Search Options : Author, date, title, subject, sector, region, conference

11. CIA World Factbook

The CIA World Factbook is a little different from the other resources on this list in that it is not an online journal directory or repository. It is, however, a useful free online research database for academics in a variety of disciplines.

All the information is free to access, and it provides facts about every country in the world, which are organized by category and include information about history, geography, transportation, and much more. The World Factbook can be searched by country or region, and there is also information about the world's oceans.

This site contains resources related to the CIA as an organization rather than being a scientific journal database specifically. The site has a user interface that is easy to navigate. The site also provides a section for updates regarding changes to what information is available and how it is organized, making it easier to interact with the information you are searching for.

Collection : 266 countries

12. Paperity

Paperity boasts its status as the "first multidisciplinary aggregator of OA journals and papers." Their focus is on helping you avoid paywalls while connecting you to authoritative research. In addition to providing readers with easy access to thousands of journals, Paperity seeks to help authors reach their audiences and help journals increase their exposure to boost readership.

Paperity has journal articles for every discipline, and the database offers more than a dozen advanced search options, including the length of the paper and the number of authors. There is even an option to include, exclude, or exclusively search gray papers.

Paperity is available for mobile, with both a mobile site and the Paperity Reader, an app that is available for both Android and Apple users. The database is also available on social media. You can interact with Paperity via Twitter and Facebook, and links to their social media are available on their homepage, including their Twitter feed.

Collection : 8,837,396

Advanced Search Options : Title, abstract, journal title, journal ISSN, publisher, year of publication, number of characters, number of authors, DOI, author, affiliation, language, country, region, continent, gray papers

13. dblp Computer Science Bibliography

The dblp Computer Science Bibliography is an online index of major computer science publications. dblp was founded in 1993, though until 2010 it was a university-specific database at the University of Trier in Germany. It is currently maintained by the Schloss Dagstuhl – Leibniz Center for Informatics.

Although it provides access to both OA articles and those behind a paywall, you can limit your search to only OA articles. The site indexes more than three million publications, making it an invaluable resource in the world of computer science. dblp entries are color-coded based on the type of item.

dblp has an extensive FAQ section, so questions that might arise about topics like the database itself, navigating the website, or the data on dblp, in addition to several other topics, are likely to be answered. The website also hosts a blog and has a section devoted to website statistics.

Collection : 5,884,702

14. EconBiz

EconBiz is a great resource for economic and business studies. A service of the Leibniz Information Centre for Economics, it offers access to full texts online, with the option of searching for OA material only. Their literature search is performed across multiple international databases.

EconBiz has an incredibly useful research skills section, with resources such as Guided Walk, a service to help students and researchers navigate searches, evaluate sources, and correctly cite references; the Research Guide EconDesk, a help desk to answer specific questions and provide advice to aid in literature searches; and the Academic Career Kit for what they refer to as Early Career Researchers.

Other helpful resources include personal literature lists, a calendar of events for relevant calls for papers, conferences, and workshops, and an economics terminology thesaurus to help in finding keywords for searches. To stay up-to-date with EconBiz, you can sign up for their newsletter.

Collection : 1,075,219

Advanced Search Options : Title, subject, author, institution, ISBN/ISSN, journal, publisher, language, OA only

15. BioMed Central

BioMed Central provides OA research from more than 300 peer-reviewed journals. While originally focused on resources related to the physical sciences, math, and engineering, BioMed Central has branched out to include journals that cover a broader range of disciplines, with the aim of providing a single platform that provides OA articles for a variety of research needs. You can browse these journals by subject or title, or you can search all articles for your required keyword.

BioMed Central has a commitment to peer-reviewed sources and to the peer review process itself, continually seeking to help and improve the peer review process. They're "committed to maintaining high standards through full and stringent peer review."

Additionally, the website includes resources to assist and support editors as part of their commitment to providing high-quality, peer-reviewed OA articles.

Collection : 507,212

Other Services : BMC administers the International Standard Randomised Controlled Trial Number (ISRCTN) registry. While initially designed for registering clinical trials, since its creation in 2000, the registry has broadened its scope to include other health studies as well.

The registry is recognized by the International Committee of Medical Journal Editors, as well as the World Health Organization (WHO), and it meets the requirements established by the WHO International Clinical Trials Registry Platform.

The study records included in the registry are all searchable and free to access. The ISRCTN registry "supports transparency in clinical research, helps reduce selective reporting of results and ensures an unbiased and complete evidence base."

Advanced Search Options : Author, title, journal, list

A multidisciplinary search engine, JURN provides links to various scholarly websites, articles, and journals that are free to access or OA. Covering the fields of the arts, humanities, business, law, nature, science, and medicine, JURN has indexed almost 5,000 repositories to help you find exactly what you're looking for.

Search features are enhanced by Google, but searches are filtered through their index of repositories. JURN seeks to reach a wide audience, with their search engine tailored to researchers from "university lecturers and students seeking a strong search tool for OA content" and "advanced and ambitious students, age 14-18" to "amateur historians and biographers" and "unemployed and retired lecturers."

That being said, JURN is very upfront about its limitations. They admit to not being a good resource for educational studies, social studies, or psychology, and conference archives are generally not included due to frequently unstable URLs.

Collection : 5,064 indexed journals

Other Services : JURN has a browser add-on called UserScript. This add-on allows users to integrate the JURN database directly into Google Search. When performing a search through Google, the add-on creates a link that sends the search directly to JURN CSE. JURN CSE is a search service that is hosted by Google.

Clicking the link from the Google Search bar will run your search through the JURN database from the Google homepage. There is also an interface for a DuckDuckGo search box; while this search engine has an emphasis on user privacy, for smaller sites that may be indexed by JURN, DuckDuckGo may not provide the same depth of results.

Advanced Search Options : Google search modifiers

Dryad is a digital repository of curated, OA scientific research data. Launched in 2009, it is run by a not-for-profit membership organization, with a community of institutional and publisher members for whom their services have been designed. Members include institutions such as Stanford, UCLA, and Yale, as well as publishers like Oxford University Press and Wiley.

Dryad aims to "promote a world where research data is openly available, integrated with the scholarly literature, and routinely reused to create knowledge." It is free to access for the search and discovery of data. Their user experience is geared toward easy self-depositing, supports Creative Commons licensing, and provides DOIs for all their content.

Note that there is a publishing charge associated if you wish to publish your data in Dryad. When searching datasets, they are accompanied by author information and abstracts for the associated studies, and citation information is provided for easy attribution.

Collection : 44,458

Advanced Search Options : No

Run by the British Library, the E-Theses Online Service (EThOS) allows you to search over 500,000 doctoral theses in a variety of disciplines. All of the doctoral theses available on EThOS have been awarded by higher education institutions in the United Kingdom.

Although some full texts are behind paywalls, you can limit your search to items available for immediate download, either directly through EThOS or through an institution's website. More than half of the records in the database provide access to full-text theses.

EThOS notes that they do not hold all records for all institutions, but they strive to index as many doctoral theses as possible, and the database is constantly expanding, with approximately 3,000 new records added and 2,000 new full-text theses available every month. The availability of full-text theses is dependent on multiple factors, including their availability in the institutional repository and the level of repository development.

Collection : 500,000+

Advanced Search Options : Abstract, author's first name, author's last name, awarding body, current institution, EThOS ID, year, language, qualifications, research supervisor, sponsor/funder, keyword, title

PubMed is a research platform well-known in the fields of science and medicine. It was created and developed by the National Center for Biotechnology Information (NCBI) at the National Library of Medicine (NLM). It has been available since 1996 and offers access to "more than 33 million citations for biomedical literature from MEDLINE, life science journals, and online books."

While PubMed does not provide full-text articles directly, and many full-text articles may be behind paywalls or require subscriptions to access them, when articles are available from free sources, such as through PubMed Central (PMC), those links are provided with the citations and abstracts that PubMed does provide.

PMC, which was established in 2000 by the NLM, is a free full-text archive that includes more than 6,000,000 records. PubMed records link directly to corresponding PMC results. PMC content is provided by publishers and other content owners, digitization projects, and authors directly.

Collection : 33,000,000+

Advanced Search Options : Author's first name, author's last name, identifier, corporation, date completed, date created, date entered, date modified, date published, MeSH, book, conflict of interest statement, EC/RN number, editor, filter, grant number, page number, pharmacological action, volume, publication type, publisher, secondary source ID, text, title, abstract, transliterated title

20. Semantic Scholar

A unique and easy-to-use resource, Semantic Scholar defines itself not just as a research database but also as a "search and discovery tool." Semantic Scholar harnesses the power of artificial intelligence to efficiently sort through millions of science-related papers based on your search terms.

Through this singular application of machine learning, Semantic Scholar expands search results to include topic overviews based on your search terms, with the option to create an alert for or further explore the topic. It also provides links to related topics.

In addition, search results produce "TLDR" summaries in order to provide concise overviews of articles and enhance your research by helping you to navigate quickly and easily through the available literature to find the most relevant information. According to the site, although some articles are behind paywalls, "the data [they] have for those articles is limited," so you can expect to receive mostly full-text results.

Collection : 203,379,033

Other Services : Semantic Scholar supports multiple popular browsers. Content can be accessed through both mobile and desktop versions of Firefox, Microsoft Edge, Google Chrome, Apple Safari, and Opera.

Additionally, Semantic Scholar provides browser extensions for both Chrome and Firefox, so AI-powered scholarly search results are never more than a click away. The mobile interface includes an option for Semantic Swipe, a new way of interacting with your research results.

There are also beta features that can be accessed as part of the Beta Program, which will provide you with features that are being actively developed and require user feedback for further improvement.

Advanced Search Options : Field of study, date range, publication type, author, journal, conference, PDF

Zenodo, powered by the European Organization for Nuclear Research (CERN), was launched in 2013. Taking its name from Zenodotus, the first librarian of the ancient library of Alexandria, Zenodo is a tool "built and developed by researchers, to ensure that everyone can join in open science." Zenodo accepts all research from every discipline in any file format.

However, Zenodo also curates uploads and promotes peer-reviewed material that is available through OA. A DOI is assigned to everything that is uploaded to Zenodo, making research easily findable and citable. You can sort by keyword, title, journal, and more and download OA documents directly from the site.

While there are closed access and restricted access items in the database, the vast majority of research is OA material. Search results can be filtered by access type, making it easy to view the free articles available in the database.

Collection : 2,220,000+

Advanced Search Options : Access, file type, keywords

Check out our roundup of free research databases as a handy one-page PDF.

How to find peer-reviewed articles.

There are a lot of free scholarly articles available from various sources. The internet is a big place. So how do you go about finding peer-reviewed articles when conducting your research? It's important to make sure you are using reputable sources.

The first source of the article is the person or people who wrote it. Checking out the author can give you some initial insight into how much you can trust what you’re reading. Looking into the publication information of your sources can also indicate whether the article is reliable.

Aspects of the article, such as subject and audience, tone, and format, are other things you can look at when evaluating whether the article you're using is valid, reputable, peer-reviewed material. So, let's break that down into various components so you can assess your research to ensure that you're using quality articles and conducting solid research.

Check the Author

Peer-reviewed articles are written by experts or scholars with experience in the field or discipline they're writing about. The research in a peer-reviewed article has to pass a rigorous evaluation process, so it's a foregone conclusion that the author(s) of a peer-reviewed article should have experience or training related to that research.

When evaluating an article, take a look at the author's information. What credentials does the author have to indicate that their research has scholarly weight behind it? Finding out what type of degree the author has—and what that degree is in—can provide insight into what kind of authority the author is on the subject.

Something else that might lend credence to the author's scholarly role is their professional affiliation. A look at what organization or institution they are affiliated with can tell you a lot about their experience or expertise. Where were they trained, and who is verifying their research?

Identify Subject and Audience

The ultimate goal of a study is to answer a question. Scholarly articles are also written for scholarly audiences, especially articles that have gone through the peer review process. This means that the author is trying to reach experts, researchers, academics, and students in the field or topic the research is based on.

Think about the question the author is trying to answer by conducting this research, why, and for whom. What is the subject of the article? What question has it set out to answer? What is the purpose of finding the information? Is the purpose of the article of importance to other scholars? Is it original content?

Research should also be approached analytically. Is the methodology sound? Is the author using an analytical approach to evaluate the data that they have obtained? Are the conclusions they've reached substantiated by their data and analysis? Answering these questions can reveal a lot about the article's validity.

Format Matters

Reliable articles from peer-reviewed sources have certain format elements to be aware of. The first is an abstract. An abstract is a short summary or overview of the article. Does the article have an abstract? It's unlikely that you're reading a peer-reviewed article if it doesn't. Peer-reviewed journals will also have a word count range. If an article seems far too short or incredibly long, that may be reason to doubt it.

Another feature of reliable articles is the sections the information is divided into. Peer-reviewed research articles will have clear, concise sections that appropriately organize the information. This might include a literature review, methodology, results (in the case of research articles), and a conclusion.

One of the most important sections is the references or bibliography. This is where the researcher lists all the sources of their information. A peer-reviewed source will have a comprehensive reference section.

An article that has been written to reach an academic community will have an academic tone. The language that is used, and the way this language is used, is important to consider. If the article is riddled with grammatical errors, confusing syntax, and casual language, it almost definitely didn't make it through the peer review process.

Also consider the use of terminology. Every discipline is going to have standard terminology or jargon that can be used and understood by other academics in the discipline. The language in a peer-reviewed article is going to reflect that.

If the author is going out of their way to explain simple terms, or terms that are standard to the field or discipline, it's unlikely that the article has been peer reviewed, as this is something that the author would be asked to address during the review process.

Publication

The source of the article will be a very good indicator of the likelihood that it was peer reviewed. Where was the article published? Was it published alongside other academic articles in the same discipline? Is it a legitimate and reputable scholarly publication?

A trade publication or newspaper might be legitimate or reputable, but it is not a scholarly source, and it will not have been subject to the peer review process. Scholarly journals are the best resource for peer-reviewed articles, but it's important to remember that not all scholarly journals are peer reviewed.

It's helpful to look at a scholarly source's website, as peer-reviewed journals will have a clear indication of the peer review process. University libraries, institutional repositories, and reliable databases (and now you have a list of legit ones) can also help provide insight into whether an article comes from a peer-reviewed journal.

Common Research Mistakes to Avoid

Research is a lot of work. Even with high standards and good intentions, it's easy to make mistakes. Perhaps you searched for access to scientific journals for free and found the perfect peer-reviewed sources, but you forgot to document everything, and your references are a mess. Or, you only searched for free online articles and missed out on a ground-breaking study that was behind a paywall.

Whether your research is for a degree or to get published or to satisfy your own inquisitive nature, or all of the above, you want all that work to produce quality results. You want your research to be thorough and accurate.

To have any hope of contributing to the literature on your research topic, your results need to be high quality. You might not be able to avoid every potential mistake, but here are some that are both common and easy to avoid.

Sticking to One Source

One of the hallmarks of good research is a healthy reference section. Using a variety of sources gives you a better answer to your question. Even if all of the literature is in agreement, looking at various aspects of the topic may provide you with an entirely different picture than you would have if you looked at your research question from only one angle.

Not Documenting Every Fact

As you conduct your research, do yourself a favor and write everything down. Everything you include in your paper or article that you got from another source is going to need to be added to your references and cited.

It's important, especially if your aim is to conduct ethical, high-quality research, that all of your research has proper attribution. If you don't document as you go, you could end up making a lot of work for yourself if the information you don't write down is something that later, as you write your paper, you really need.

Using Outdated Materials

Academia is an ever-changing landscape. What was true in your academic discipline or area of research ten years ago may have since been disproven. If fifteen studies have come out since the article that you're using was published, it's more than a little likely that you're going to be basing your research on flawed or dated information.

If the information you're basing your research on isn't as up-to-date as possible, your research won't be of quality or able to stand up to any amount of scrutiny. You don't want all of your hard work to be for naught.

Relying Solely on Open Access Journals

OA is a great resource for conducting academic research. There are high-quality journal articles available through OA, and that can be very helpful for your research. But, just because you have access to free articles, that doesn't mean that there's nothing to be found behind a paywall.

Just as dismissing high-quality peer-reviewed articles because they are OA would be limiting, not exploring any paid content at all is equally short-sighted. If you're seeking to conduct thorough and comprehensive research, exploring all of your options for quality sources is going to be to your benefit.

Digging Too Deep or Not Deep Enough

Research is an art form, and it involves a delicate balance of information. If you conduct your research using only broad search terms, you won't be able to answer your research question well, or you'll find that your research provides information that is closely related to your topic but, ultimately, your findings are vague and unsubstantiated.

On the other hand, if you delve deeply into your research topic with specific searches and turn up too many sources, you might have a lot of information that is adjacent to your topic but without focus and perhaps not entirely relevant. It's important to answer your research question concisely but thoroughly.

Different Types of Scholarly Articles

Different types of scholarly articles have different purposes. An original research article, also called an empirical article, is the product of a study or an experiment. This type of article seeks to answer a question or fill a gap in the existing literature.

Research articles will have a methodology, results, and a discussion of the findings of the experiment or research and typically a conclusion.

Review articles overview the current literature and research and provide a summary of what the existing research indicates or has concluded. This type of study will have a section for the literature review, as well as a discussion of the findings of that review. Review articles will have a particularly extensive reference or bibliography section.

Theoretical articles draw on existing literature to create new theories or conclusions, or look at current theories from a different perspective, to contribute to the foundational knowledge of the field of study.

10 Tips for Navigating Journal Databases

Use the right academic journal database for your search, be that interdisciplinary or specific to your field. Or both!

If it's an option, set the search results to return only peer-reviewed sources.

Start by using search terms that are relevant to your topic without being overly specific.

Try synonyms, especially if your keywords aren't returning the desired results.

Even if you've found some good articles, try searching using different terms.

Explore the advanced search features of the database(s).

Learn to use Booleans (AND, OR, NOT) to expand or narrow your results.

Once you've gotten some good results from a more general search, try narrowing your search.

Read through abstracts when trying to find articles relevant to your research.

Keep track of your research and use citation tools. It'll make life easier when it comes time to compile your references.

7 Frequently Asked Questions

1. how do i get articles for free.

Free articles can be found through free online academic journals, OA databases, or other databases that include OA journals and articles. These resources allow you to access free papers online so you can conduct your research without getting stuck behind a paywall.

Academics don't receive payment for the articles they contribute to journals. There are often, in fact, publication fees that scholars pay in order to publish. This is one of the funding structures that allows OA journals to provide free content so that you don't have to pay fees or subscription costs to access journal articles.

2. How Do I Find Journal Articles?

Journal articles can be found in databases and institutional repositories that can be accessed at university libraries. However, online research databases that contain OA articles are the best resource for getting free access to journal articles that are available online.

Peer-reviewed journal articles are the best to use for academic research, and there are a number of databases where you can find peer-reviewed OA journal articles. Once you've found a useful article, you can look through the references for the articles the author used to conduct their research, and you can then search online databases for those articles, too.

3. How Do I Find Peer-Reviewed Articles?

Peer-reviewed articles can be found in reputable scholarly peer-reviewed journals. High-quality journals and journal articles can be found online using academic search engines and free research databases. These resources are excellent for finding OA articles, including peer-reviewed articles.

OA articles are articles that can be accessed for free. While some scholarly search engines and databases include articles that aren't peer reviewed, there are also some that provide only peer-reviewed articles, and databases that include non-peer-reviewed articles often have advanced search features that enable you to select "peer review only." The database will return results that are exclusively peer-reviewed content.

4. What Are Research Databases?

A research database is a list of journals, articles, datasets, and/or abstracts that allows you to easily search for scholarly and academic resources and conduct research online. There are databases that are interdisciplinary and cover a variety of topics.

For example, Paperity might be a great resource for a chemist as well as a linguist, and there are databases that are more specific to a certain field. So, while ERIC might be one of the best educational databases available for OA content, it's not going to be one of the best databases for finding research in the field of microbiology.

5. How Do I Find Scholarly Articles for Specific Fields?

There are interdisciplinary research databases that provide articles in a variety of fields, as well as research databases that provide articles that cater to specific disciplines. Additionally, a journal repository or index can be a helpful resource for finding articles in a specific field.

When searching an interdisciplinary database, there are frequently advanced search features that allow you to narrow the search results down so that they are specific to your field. Selecting "psychology" in the advanced search features will return psychology journal articles in your search results. You can also try databases that are specific to your field.

If you're searching for law journal articles, many law reviews are OA. If you don't know of any databases specific to history, visiting a journal repository or index and searching "history academic journals" can return a list of journals specific to history and provide you with a place to begin your research.

6. Are Peer-Reviewed Articles Really More Legitimate?

The short answer is yes, peer-reviewed articles are more legitimate resources for academic research. The peer review process provides legitimacy, as it is a rigorous review of the content of an article that is performed by scholars and academics who are experts in their field of study. The review provides an evaluation of the quality and credibility of the article.

Non-peer-reviewed articles are not subject to a review process and do not undergo the same level of scrutiny. This means that non-peer-reviewed articles are unlikely, or at least not as likely, to meet the same standards that peer-reviewed articles do.

7. Are Free Article Directories Legitimate?

Yes! As with anything, some databases are going to be better for certain requirements than others. But, a scholarly article database being free is not a reason in itself to question its legitimacy.

Free scholarly article databases can provide access to abstracts, scholarly article websites, journal repositories, and high-quality peer-reviewed journal articles. The internet has a lot of information, and it's often challenging to figure out what information is reliable.

Research databases and article directories are great resources to help you conduct your research. Our list of the best research paper websites is sure to provide you with sources that are totally legit.

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PubMed® comprises more than 37 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full text content from PubMed Central and publisher web sites.

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8 things to know about the drug known as 'gas station heroin'.

For decades, tianeptine was used to treat depression, even though no one knew how it worked. But it turns out it's a type of opioid, and the U.S. is facing a spike in abuse of "gas station heroin."

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Nih genetic testing registry (gtr®) annual review process ensures high-quality data.

Do you rely on high-quality and up-to-date genetic test information from the NIH Genetic Testing Registry (GTR)? Laboratories are expected to regularly review their tests, lab contacts, and license data for accuracy. GTR is making the annual review process for submitters easier and more intuitive to ensure we provide you the most current information. Attention … Continue reading NIH Genetic Testing Registry (GTR®) Annual Review Process Ensures High-quality Data →

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Check out RefSeq release 225, now available online and from the FTP site. You can access RefSeq data through NCBI Datasets. What’s included in this release? As of July 8, 2024, this full release incorporates genomic, transcript, and protein data containing: 448,507,905 records 334,845,613 proteins 63,542,774 RNAs Sequences from 152,668 organisms The release is provided in several directories as … Continue reading RefSeq Release 225 Now Available! →

Sequencing Technique Detects Earliest Signs of Genetic Mutations Underlying Cancer, Aging, and More

Every day, billions of cells in your body divide, each producing two daughter cells. It’s an essential process for your tissues and organs to renew themselves and remain healthy. To do it, cells must first duplicate their DNA to ensure that each daughter cell gets an accurate copy. In this process, mistakes are inevitably made. Most DNA errors are accurately fixed and do not lead to mutations. But when small errors akin to single-letter typos aren’t corrected, they can become permanent in a cell and multiplied with each subsequent cell division. Even cells that don’t divide, such as neurons in your brain, acquire damage and mutations in their DNA with age. As a result, your tissues contain collections of cells with distinct mutations that accumulate over time. While many of these small errors will show no obvious consequences, others can lead to cancer and other health conditions. Now, a new DNA sequencing technique, described in Nature and developed through research supported by NIH, promises to detect early DNA changes before they become permanent mutations in a cell’s genome. The method, called Hairpin Duplex Enhanced Fidelity Sequencing (HiDEF-seq), could advance our understanding of how and why mutations arise, with potentially important implications for our health. For example, the ability to identify signs that precede mutations may help predict a person’s health risks based on genetic predispositions, environmental exposures, or other factors.

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The top list of academic research databases

2. Web of Science

5. ieee xplore, 6. sciencedirect, 7. directory of open access journals (doaj), get the most out of your academic research database, frequently asked questions about academic research databases, related articles.

Whether you are writing a thesis , dissertation, or research paper it is a key task to survey prior literature and research findings. More likely than not, you will be looking for trusted resources, most likely peer-reviewed research articles.

Academic research databases make it easy to locate the literature you are looking for. We have compiled the top list of trusted academic resources to help you get started with your research:

Scopus is one of the two big commercial, bibliographic databases that cover scholarly literature from almost any discipline. Besides searching for research articles, Scopus also provides academic journal rankings, author profiles, and an h-index calculator .

Coverage: 90.6 million core records
References: N/A
Discipline: Multidisciplinary
Access options: Limited free preview, full access by institutional subscription only
Provider: Elsevier

Web of Science also known as Web of Knowledge is the second big bibliographic database. Usually, academic institutions provide either access to Web of Science or Scopus on their campus network for free.

Coverage: approx. 100 million items
References: 1.4 billion
Access options: institutional subscription only
Provider: Clarivate (formerly Thomson Reuters)

PubMed is the number one resource for anyone looking for literature in medicine or biological sciences. PubMed stores abstracts and bibliographic details of more than 30 million papers and provides full text links to the publisher sites or links to the free PDF on PubMed Central (PMC) .

Coverage: approx. 35 million items
Discipline: Medicine and Biological Sciences
Access options: free
Provider: NIH

For education sciences, ERIC is the number one destination. ERIC stands for Education Resources Information Center, and is a database that specifically hosts education-related literature.

Coverage: approx. 1.6 million items
Discipline: Education
Provider: U.S. Department of Education

Search interface of ERIC academic database

IEEE Xplore is the leading academic database in the field of engineering and computer science. It's not only journal articles, but also conference papers, standards and books that can be search for.

Coverage: approx. 6 million items
Discipline: Engineering
Provider: IEEE (Institute of Electrical and Electronics Engineers)

ScienceDirect is the gateway to the millions of academic articles published by Elsevier, 1.4 million of which are open access. Journals and books can be searched via a single interface.

Coverage: approx. 19.5 million items

The DOAJ is an open-access academic database that can be accessed and searched for free.

Coverage: over 8 million records
Provider: DOAJ

JSTOR is another great resource to find research papers. Any article published before 1924 in the United States is available for free and JSTOR also offers scholarships for independent researchers.

Coverage: more than 12 million items
Provider: ITHAKA

Start using a reference manager like Paperpile to save, organize, and cite your references. Paperpile integrates with PubMed and many popular databases, so you can save references and PDFs directly to your library using the Paperpile buttons:

Scopus is one of the two big commercial, bibliographic databases that cover scholarly literature from almost any discipline. Beside searching for research articles, Scopus also provides academic journal rankings, author profiles, and an h-index calculator .

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10 Free Research and Journal Databases

3-minute read

6th April 2019

Finding good research can be tough, especially when so much of it is locked behind paywalls . But there are free resources out there if you know where to look. So to help out, we’ve compiled a list of ten free academic search engines and databases that you should check out.

1. Google Scholar

Even if you’ve not used Google Scholar before, you’ll know Google. And, thus, you can probably guess that Google Scholar is a search engine dedicated to academic work. Not everything listed on Google Scholar will be freely available in full. But it is a good place to start if you’re looking for a specific paper, and many papers can be downloaded for free.

CORE is an open research aggregator. This means it works as a search engine for open access research published by organizations from around the world, all of which is available for free. It is also the world’s largest open access aggregator , so it is a very useful resource for researchers!

3. Bielefeld Academic Search Engine (BASE)

Another dedicated academic search engine, BASE offers access to more than 140 million documents from more than 6,000 sources. Around 60% of these documents are open access, and you can filter results to see only research that is available for free online.

4. Directory of Open Access Journals (DOAJ)

The Directory of Open Access Journals (DOAJ) is a database that lists around 12,000 open access journals covering all areas of science, technology, medicine, social science, and the humanities.

PubMed is a search engine maintained by the NCBI, part of the United States National Library of Medicine. It provides access to more than 29 million citations of biomedical research from MEDLINE, life science journals, and online books. The NCBI runs a similar search engine for research in the chemical sciences called PubChem , too, which is also free to use.

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6. E-Theses Online Service (EThOS)

Run by the British Library, EThOS is a database of over 500,000 doctoral theses. More than half of these are available for free, either directly via EThOS or via a link to a university website.

7. Social Science Research Network (SSRN)

SSRN is a database for research from the social sciences and humanities, including 846,589 research papers from 426,107 researchers across 30 disciplines. Most of these are available for free, although you may need to sign up as a member (also free) to access some services.

8. WorldWideScience

WorldWideScience is a global academic search engine, providing access to national and international scientific databases from across the globe. One interesting feature is that it offers automatic translation, so users can have search results translated into their preferred language.

9. Semantic Scholar

Semantic Scholar is an “intelligent” academic search engine. It uses machine learning to prioritize the most important research, which can make it easier to find relevant literature. Or, in Semantic Scholar’s own words, it uses influential citations, images, and key phrases to “cut through the clutter.”

10. Public Library of Science (PLOS)

PLOS is an open-access research organization that publishes several journals. But as well as publishing its own research, PLOS is a dedicated advocate for open-access learning. So if you appreciate the search engines and databases we’ve listed here, check out the rest of the PLOS site to find out more about their campaign to enable access to knowledge.

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Broad Science Research Databases

AGRICOLA : The National Agricultural Library's comprehensive database covering agriculture and allied disciplines, including: chemistry, engineering, entomology, forestry, social science (general), and water resources.
Anthropology Plus (SI staff): Index of journal articles, and additional resources from core and lesser-known journals from the early 19th century to today.
Encyclopedia of Life (EOL) : Online encyclopedia of all living species, currently number over 1.9 million.
GeoRef (SI staff): Over 3.4 million references in the geosciences, including journal articles, books, maps, conference papers, reports and theses.
Google Scholar : Accessing Google Scholar from the Smithsonian computer network provides access to library-subscribed full text. For more information, see Off-Site Access to Electronic Resources .
Journal Citation Reports (SI staff): Provides impact factors and rankings of many journals in the social and life sciences based on citation analysis.
PubMed : Includes more than 22 million citations for biomedical literature from MEDLINE, life science journals, and online books.
U.S. Geological Survey Library : Among the largest geoscience library collections in the world.
Web of Science: Core Collection (SI staff): Covers over 12,000 of the highest impact journals worldwide with coverage from 1900 to present. See the Web of Science training portal for additional help resources.
Worldcat (web) or WorldCat (OCLC FirstSearch) (SI staff): Combined search of thousands of library catalogs from around the world, including books, music, videos, and digital content records.
Zoological Record (SI staff): Considered the world's leading taxonomic reference for zoological names, indexing 90% of the world literature in zoology.

Focused Science Databases

For research guides on a variety of natural history topics, including additional databases and resources, see our Science Research Guides .

Algaebase : Database of taxonomic, nomenclatural, and distributional information on terrestrial, marine, and freshwater algae organisms.
AnimalBase: Early Zoological Literature Online : Hosted by the Zoological Institute of the University of Gottingen, this database provides open access to zoological works from 1550-1770.
AnthroSource (SI staff): Full-text anthropological resources from the breadth and depth of the discipline.
AquaDocs : A thematic repository covering the natural marine, coastal, estuarine /brackish and fresh water environments.
Birds of North America Online : Comprehensive resource from the Cornell Lab of Ornithology and the American Ornithologists' Union.
Catalogue of Life (Species 2000 - ITIS) : Project that catalogued over one million species as of 2001.
FishBase : Database covering the breadth of all known species, considered a powerful tool for ecology.
GreenFILE (SI staff): Covers connections between the environment and a variety of disciplines and includes topics such as global climate change, green building, and more.
Index of Botanical Publications (Harvard University Herbaria): Created to assist in the verification of publication names in the Specimen Database and the Gray Index.
Index of Botanists (Harvard University Herbaria): Comprehensive database of authors and collectors in botany, mycology, including systematic publications.
IOPI Database of Plant Databases : Hosted by Charles Sturt University, this meta-database allows the user search granularity across 100 metadata fields.
International Plant Names Index : Nomenclatural database for the scientific names of vascular plants, linking directly to the Biodiversity Heritage Library .
ITIS: Integrated Taxonomic Information System : Created through international partnerships (including the Smithsonian), this database hosts authoritative taxonomic information on plants, animals, fungi, and microbes.
JSTOR Global Plants (SI staff): Includes plant type specimens, taxonomic structures, scientific literature, and related materials.
KBD: Kew Bibliographic Databases : Selection of 24 botanical databases containing information on correspondence, herbaria, seed lists, etc.
Latindex : Regional Cooperative Online Information System for Scholarly Journals from Latin America, the Caribbean, Spain and Portugal. For more details, visit http://en.wikipedia.org/wiki/Latindex .
National Museum of Natural History Research and Collections Information System (EMu) : Over ten million specimen records covering six departments and four divisions of the National Museum of Natural History.
SORA: Searchable Ornithological Research Archive : Developed by the University Libraries at the University of New Mexico, SORA is the world’s largest open access ornithological publications database.

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AnimalBase: Early Zoological Literature Online : Hosted by the Zoological Institute of the University of Gottingen, this database provides open access to zoological works from 1550-1770.
Biodiversity Heritage Library : A digital library containing primarily historical texts in the natural sciences.
Field Book Project (Smithsonian Archives) : With the purpose of illuminating unpublished works integral to scientific research, the FBP database contains 4,000 digitized field books and 9,500 catalogued field books, in total.
Joseph Henry Papers Project (Smithsonian Archives) : The scientific output of the first Secretary of the Smithsonian. Contains over 170,000 documents in fifteen scientific disciplines.

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Albert Einstein's Complete Papers "The Einstein Archives Online Website provides the first online access to Albert Einstein’s scientific and non-scientific manuscripts held by the Albert Einstein Archives at the Hebrew University of Jerusalem"
Ciencia.gov All of Science.gov in Spanish
National Academies Press Free download of all PDFs in education, science, medicine, engineering and more. more... less... The National Academies Press (NAP) was created by the National Academies to publish the reports issued by the National Academy of Sciences, the National Academy of Engineering, the Institute of Medicine, and the National Research Council, all operating under a charter granted by the Congress of the United States. The NAP publishes more than 200 books a year on a wide range of topics in science, engineering, and health, capturing the most authoritative views on important issues in science and health policy. The institutions represented by the NAP are unique in that they attract the nation’s leading experts in every field to serve on their award-wining panels and committees. The nation turns to the work of NAP for definitive information on everything from space science to animal nutrition.
Science Daily Features major headlines and news stories for all scientific disciplines, including laboratory science, environmental science, health science, and computer science. The site features easy sorting options, is updated continuously, and provides thorough source information for all stories.
Science Watch ScienceWatch.com (updated weekly) provides a behind-the-scenes look at the scientists, journals, institutions, nations, and papers selected by Essential Science IndicatorsSM from Thomson Reuters and other products of the Research Services Group.
Science.gov "Science.gov searches over 55 databases and over 2100 selected websites from 13 federal agencies, offering 200 million pages of authoritative U.S. government science information including research and development results."
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Online scientific databases.

AnthroKids - Anthropometric Data of Children displays the results of two studies on anthropometric data of children.

Atlas of the Spectrum of a Platinum/Neon Hollow-Cathode Lamp in the Region 1130-4330 Å contains wavelengths and intensities for about 5600 lines in the region 4330 Å. An atlas plot of the spectrum is given, with the spectral lines marked and their intensities, wavelengths, and classifications listed.

Atomic Energy Levels and Wavelengths References contained in this database are from Bibliography on Atomic Energy Levels and Spectra, NBS Special Publication 363 and Supplements, as well as current references since the last published bibliography collected by the NIST Atomic Spectroscopy Data Center. These references pertain to atomic structure and spectra that arise from interactions or excitations involving electrons in the outer shells of free atoms and atomic ions, or from inner shell excitations corresponding to frequencies up to the soft x-ray range.

Periodic Table: Atomic Properties of the Elements A periodic table, containing NIST critically-evaluated data on atomic properties of the elements [SP 966] was designed as a NIST handout for use at exhibitions and trade shows. The publication of the handout coincided with NIST's centennial celebration in 2001. One side of the handout (shown below) is available online in two formats (PDF & TIFF), and is suitable for high-resolution color printing for desk or wall-chart display. [The other side of the handout (not available online) contains historical information.]

Atomic Reference Data for Electronic Structure Calculations contains total energies and orbital eigenvalues for the atoms hydrogen through uranium, as computed in several standard variants of density-functional theory.

The NIST Atomic Spectra Database (ASD) contains data for radiative transitions and energy levels in atoms and atomic ions. Data are included for observed transitions of 99 elements and energy levels of 52 elements. ASD contains data on about 900 spectra from about 1 Å (Ångströms) to 200 µm (micrometers), with about 70,000 energy levels and 91,000 lines, 40,000 of which have transition probabilities listed. The most current NIST-evaluated data associated with each transition are integrated under a single listing.

Atomic Spectral Line Broadening Bibliographic Database contains approximately 800 recent references, all collected after the last published bibliography. The database contains number data, general information, comments, and review articles.

Atomic Transition Probability Bibliographic Database provides 6,113 references from 1914 through 1999. These papers contain numerical data, comments and review articles on atomic transition probabilities (oscillator strengths, line strengths, or radiactive lifetimes).

Atomic Weights and Isotopic Compositions the atomic weights are available for elements 1 through 111, and isotopic compositions or abundances are given when appropriate.

Bibliography of Photon Total Cross Section (Attenuation Coefficient) Measurements includes papers reporting absolute measurements of photon (XUV, x-ray, gamma-ray, bremsstrahlung) total interaction cross sections or attenuation coefficients for the elements and some compounds.

NIST Biofuel Database brings together structural, biological, and thermodynamic data for enzymes that are either in current use or are being considered for use in the production of biofuels.

The Biological Macromolecule Crystallization Database and NASA Archive for Protein Crystal Growth Data (BMCD) contains the conditions reported for the crystallization of proteins and nucleic acids used in X-ray structure determinations and archives the results of microgravity macromolecule crystallization studies.

The Ceramics WebBook is an gateway to evaluated data, a guide to data centers and sources and a repository for tools and resources for ceramics.

The NIST Chemical Kinetics Database includes essentially all reported kinetics results for thermal gas-phase chemical reactions. The database is designed to be searched for kinetics data based on the specific reactants involved, for reactions resulting in specified products, for all the reactions of a particular species, or for various combinations of these. In addition, the bibliography can be searched by author name or combination of names. The database contains in excess of 38,000 separate reaction records for over 11,700 distinct reactant pairs. These data have been abstracted from over 12,000 papers with literature coverage through early 2000.

The NIST Chemistry WebBook , sixth edition contains thermochemical data for over 6500 organic and small inorganic compounds, reaction thermochemistry data for over 9800 reactions, IR spectra for over 8700 compounds, mass spectra for over 12,600 compounds, UV/Vis spectra for over 400 compounds, electronic / vibrational spectra for over 4100 compounds, constants of diatomic molecules (spectroscopic data) for over 600 compounds, ion energetics data for over 16,000 compounds, and thermophysical property data for 33 fluids. There are many avenues for searching the database.

CIS2 Visual Interoperability Testbed translates a CIS2 file (CIMsteel Integrations Standards) of a steel structure into a 3D interactive model in the form of a VRML (Virtual Reality Modeling Language) file. The translator is part of the research in developing a mapping between VRML prototypes and CIS2.

CKMech Chemical Kinetics Mechanisms was developed to make available data in a report entitled Thermochemical and Chemical Kinetic Data for Fluorinated Hydrocarbons.

The NIST Computational Chemistry Comparison and Benchmark Database is a collection of experimental and ab initio thermochemical properties for a selected set of molecules. Users are provide a benchmark set of molecules for the evaluation of ab initio computational methods and allow the comparison between different ab initio computational methods for the prediction of thermochemical properties.

Dictionary of Algorithms and Data Structures is a dictionary of algorithms, algorithmic techniques, data structures, archetypical problems, and related definitions. Some entries have links to further information and implementations.

The Digital Library of Mathematical Functions (DLMF) is a compendium of essential properties of the special functions of applied mathematics, which are ubiquitous in mathematical modeling and scientific computing. The DLMF includes references to proof sources for every formula, descriptions of relevant mathematical techniques, illustrative graphics , and links to online research literature, algorithms and software. The DLMF is updated periodically to cite or include new published results.

Electron Interactions with Plasma Processing Gases has data excerpted from recently published articles in the Journal of Physical and Chemical Reference Data (JPCRD). Presented here are collision cross section data and electron transport coefficients for gases, such as CF4 and CHF3, used in the manufacturing of semiconductor devices.

The Elemental Data Index provides access to the holdings of the NIST Physics Laboratory online data organized by element. It is intended to simplify the process of retrieving online scientific data for a specific element.

Engineering Statistics Handbook details numerous methods to help scientists and engineers incorporate statistical methods in their work.

Fire Research Information Services (FRIS) is a resource for fire protection engineers, scientists, and fire service personal. It includes FIREDOC which is a complete fire research bibliographic database with 55,000 holdings (published reports, journal articles, conference proceedings, books, and audiovisual items) of FRIS. Each reference has complete bibliographic information.

FLYCHK Collisional-Radiative Code FLYCHK provides a capability to generate atomic level populations and charge state distributions for low-Z to mid-Z elements under NLTE conditions.

Frequencies for Interstellar Molecular Microwave Transitions presents critically evaluated transition frequencies for the molecular transitions detected in interstellar and circumstellar clouds.

CODATA Fundamental Physical Constants , developed in the Physics Laboratory at NIST, addresses three topics: fundamental physical constants, the International System of Units (SI), which is the modern metric system, and expressing the uncertainty of measurement results.

Fundamental Physical Constants - International System of Units (SI) lists important definitions related to the modern metric system of measurement.

Fundamental Physical Constants - Searchable Bibliography on the Constants contains citations for the most important theoretical and experimental publications relevant to the fundamental constants and closely related precision measurements published since the mid 1980s.

Ground Levels and Ionization Energies for the Neutral Atoms provides data for ground state electron configurations and ionization energies for the neutral atoms (Z = 1-104) including references.

The Guide to Available Mathematical Software studies techniques to provide scientists and engineers with improved access to reusable computer software components which are available to them for use in mathematical modeling and statistical analysis. It provides centralized access to such items as abstracts, documentation, and source code of software modules that it catalogs.

Guidelines for Evaluating and Expressing the Uncertainty of NIST Measurement Results presents a method of evaluating and expressing uncertainty in measurement adapted from NIST Technical Note 1297.

NIST Heat Transmission Properties of Insulating and Building Materials provides a valuable reference for building designers, material manufacturers, and researchers in the thermal design of building components and equipment. NIST has accumulated a valuable and comprehensive collection of thermal conductivity data from measurements performed with a 200-mm square guarded-hot-plate apparatus (from 1933 to 1983).

NIST High Temperature Superconducting Materials Database provides evaluated thermal, mechanical, and superconducting property data for oxides and other nonconventional superconductors.

NIST Interactive Algorithm for Isotopic CO2 Measurements is a web-based tool for converting carbon dioxide isotope measurements into standardized delta 13-C and delta-18-O values.

The International Comparisons Database provides information on Appendices B and D of the Comité International des Poid et Mesures (CIPM) Mutual Recognition Arrangement (MRA). The official source of the data is the BIPM key comparison database. The ICDB provides access to results of comparisons of measurements and standards organized by the consultative committees of the CIPM and the Regional Metrology Organizations.

The NIST ITS-90 Thermocouple Database contains the most commonly used tables of NIST Monograph 175, "Temperature-Electromotive Force Reference Functions and Tables for the Letter-Designated Thermocouple Types Based on the ITS-90," by Burns, Kaeser (formerly Scroger), Strouse, Croarkin, and Guthrie. These reference functions have been adopted as standards by the American Society for Testing and Materials and the International Electrotechnical Commission.

The Matrix Market Database is a visual repository of test data for use in comparative studies of algorithms for numerical linear algebra, featuring nearly 500 sparse matrices from a variety of applications, as well as matrix generation tools and services.

NLTE4 Plasma Population Kinetics Database Welcome to the NIST NLTE-4 Plasma Kinetics Modeling Database! This database contains benchmark results for simulation of plasma population kinetics and emission spectra. The data were contributed by the participants of the 4th Non-LTE Code Comparison Workshop who have unrestricted access to the database. The only limitation for other users is in hidden labeling of the output results. Guest users can proceed to the database entry page without entering userid and password.

Phase Diagrams and Computational Thermodynamics - Solder Systems predicts melting temperatures and freezing ranges of lead-free solders which are used to remove lead-containing components from commercial products. This database also shows the effects of non-equilibrium solidification. Also included is a collection of calculated binary and ternary systems that are relevant to solders.

NIST Property Data Summaries for Advanced Materials are topical collections of property values derived from surveys of published data. Thermal, mechanical, structural, and chemical properties are included in the collections.

The Protein Data Bank PDB is the single worldwide repository for the processing and distribution of 3-D biological macromolecular structure data.

It is currently managed by a collaboration of - Rutgers University, Univ. of California - San Diego and NIST.

Radionuclide Half-Life Measurements presents the half-lives of many radionuclides measured at NIST. Revised values for the half lives of various "short-lived" radionuclides arise from improved impurity analysis, incorporation of additional data from new sources, and reevaluation of old data.

NIST Recommended Rest Frequencies for Observed Interstellar Molecular Microwave Transitions -1991 Revision provides critically evaluated transition frequencies for the molecular transitions detected in interstellar and circumstellar clouds. The tabulated transitions are recommended for reference in future astronomical observations in the microwave and millimeter wavelength regions.

SAHA Plasma Population Kinetics Database Welcome to the NIST Saha Plasma Kinetics Modeling Database. This database contains benchmark results for simulation of plasma population kinetics and emission spectra. The data were contributed by the participants of the 3rd Non-LTE Code Comparison Workshop who have unrestricted access to the database. The only limitation for other users is in hidden labeling of the output results. Guest users can proceed to the database entry page without entering userid and password.

Short Tandem Repeat DNA Internet Database is intended to benefit research and application of short tandem repeat DNA markers for human identity testing. Facts and sequence information on each STR system, population data, commonly used multiplex STR systems, PCR primers and conditions and a review of various technologies for analysis of STR alleles have been included.

The Statistical Reference Datasets is also supported by the Standard Reference Data Program. The purpose of this project is to improve the accuracy of statistical software by providing reference datasets with certified computational results that enable the objective evaluation of statistical software.

Stopping-Power and Range Tables for Electrons, Protons & Helium Ions The databases ESTAR, PSTAR, and ASTAR calculate stopping-power and range tables for electrons, protons, or helium ions, according to methods described in ICRU Reports 37 and 49. Stopping-power and range tables can be calculated for electrons in any user-specified material and for protons and helium ions in 74 materials.

NIST Structural Ceramics Database (WebSCD) provides evaluated materials property data for a wide range of advanced ceramics known variously as structural ceramics, engineering ceramics, and fine ceramics.

Tables of X-Ray Mass Attenuation Coefficients and Mass Energy - Absorption Coefficients from 1keV to 20 MeV for Elements Z = 1 to 92 and 48 Additional Substances of Dosimetric Interest include tables covering energies of the photon (x-ray, gamma ray, bremsstrahlung) from 1 keV to 20 MeV.

Thermodynamics of Enzyme-Catalyzed Reactions Database contains thermodynamic data on enzyme-catalyzed reactions that have been recently published in the Journal of Physical and Chemical Reference Data (JPCRD). For each reaction the following information is provided: the reference for the data, the reaction studied, the name of the enzyme used and its Enzyme Commission number, the method of measurement, the data and an evaluation thereof.

ThermoPlan - NIST Standard Reference Database #167 Experimental Planning and Coverage Evaluation Aid for Thermophysical Property Measurements

This web application provides free and open access for the broader research community to the experimental planning utilities that are incorporated into ThermoData Engine (TDE) [J. Chem. Inf. Model. 2005, 45, 816-838]. TDE provides recommendations for the relative merit of a proposed measurement via assessment of the existing body of knowledge, including availability of experimental thermophysical property data, variable ranges studied, associated uncertainties, state of prediction methods, and parameters for deployment of prediction methods. The web applications provides utilities for the assessment of specific property measurements for pure and binary chemical systems, the broader data needs of pure systems, and recommendations for binary mixture measurements that could extend the current UNIFAC model.

The Database of the Thermophysical Properties of Gases Used in the Semiconductor Industry concerns transport and thermodynamic property data for the gases used in semiconductor processing. The data are useful for equipment modeling in chemical vapor deposition (CVD) processes and the data will also provide a rational basis for the calibration of mass flow controllers (MRCs) used to meter process gases.

The NIST Visible Cement Dataset consists of data on cement pastes with ratios between 0.3 and 0.45 that were prepared and viewed after various hydration times.

Wavenumber Calibration Tables from Heterodyne Frequency Measurements contains the bibliography and atlas as updated through November 1994. The atlas and wavenumber tables consist of many pages of spectral maps accompanied by tables of transition wavenumbers and their identity.

XCOM: Photon Cross Sections Database can be used to calculate photon cross sections for scattering, photoelectric absorption and pair production, as well as total attenuation coefficients, for any element, compound or mixture (Z <= 100) at energies from 1 keV to 100 GeV.

X-Ray Attenuation and Absorption for Materials of Dosimetic Interest Tables and graphs of the photon mass attenuation coefficient and the mass energy-absorption coefficient are presented for all of the elements Z = 1 to 92, and for 48 compounds and mixtures of radiological interest. The tables cover energies of the photon (x-ray, gamma ray, bremsstrahlung) from 1 keV to 20 MeV.

X-Ray Form Factor, Attenuation and Scattering Tables this database collects tables and graphs of the form factors, the photoabsorption cross section, and the total attenuation coefficient for any element (Z <=92).

The NIST X-ray Photoelectron Spectroscopy (XPS) Database gives easy access to the energies of many photoelectron and Auger-electron spectral lines. Resulting from a critical evaluation of the published literature, the database contains over 19,000 line positions, chemical shifts, doublet splittings, and energy separations of photoelectron and Auger-electron lines. A highly interactive program allows the user to search by element, line type, line energy, and many other variables.

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JSmol Viewer

Urban disparity analytics using gis: a systematic review.

1. Introduction

2. material and methods, 2.1. data collection, 2.2. vosviewer as a bibliometric tool, 3.1. five main research clusters using gis, 3.2. urban disparity and major bibliographic clutters, 4. discussion, 5. conclusions, supplementary materials, author contributions, data availability statement, conflicts of interest.

Benati, G.; Calcagni, F.; Matellozzo, F.; Ghermandi, A.; Langemeyer, J. Unequal Access to Cultural Ecosystem Services of Green Spaces within the City of Rome—A Spatial Social Media-Based Analysis. Ecosyst. Serv. 2024 , 66 , 101594. [ Google Scholar ] [ CrossRef ]
Xu, X.; Zheng, M. High-Speed Rail Construction and Urban Innovation Disparity in China: The Role of Internet Development. Econ. Chang. Restruct. 2023 , 56 , 3567–3599. [ Google Scholar ] [ CrossRef ]
Dashkevych, O.; Portnov, B.A. Does City Smartness Improve Urban Environment and Reduce Income Disparity? Evidence from an Empirical Analysis of Major Cities Worldwide. Sustain. Cities Soc. 2023 , 96 , 104711. [ Google Scholar ] [ CrossRef ]
Hoelzl, C.; Schmiz, A.; Hölzl, C.; Schmiz, A. Urban Differences. Disparities within and between Cities. ERDE 2014 , 145 , 111–112. [ Google Scholar ]
Naumann, M. Urban Differences. Disparities within and between Cities. ERDKUNDE 2011 , 65 , 219–220. [ Google Scholar ]
Massey, D.S.; Denton, N.A. Segregation and the Making of the Underclass. Urban Sociol. Read. 1993 , 2 , 191–201. [ Google Scholar ]
Demetillo, M.A.G.; Navarro, A.; Knowles, K.K.; Fields, K.P.; Geddes, J.A.; Nowlan, C.R.; Janz, S.J.; Judd, L.M.; Al-Saadi, J.; Sun, K.; et al. Observing Nitrogen Dioxide Air Pollution Inequality Using High-Spatial-Resolution Remote Sensing Measurements in Houston, Texas. Environ. Sci. Technol. 2020 , 54 , 9882–9895. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Bullard, R.D.; Johnson, G.S. Environmentalism and Public Policy: Environmental Justice: Grassroots Activism and Its Impact on Public Policy Decision Making. J. Soc. Issues 2000 , 56 , 555–578. [ Google Scholar ] [ CrossRef ]
Williams, D.R.; Collins, C. Racial Residential Segregation: A Fundamental Cause of Racial Disparities in Health. Public Health Rep. 2001 , 116 , 404–416. [ Google Scholar ] [ CrossRef ]
Sampson, R.J. Great American City: Chicago and the Enduring Neighborhood Effect ; University of Chicago Press: Chicago, IL, USA, 2012; ISBN 0-226-73456-0. [ Google Scholar ]
Urban Development. Available online: https://www.worldbank.org/en/topic/urbandevelopment (accessed on 10 May 2024).
Calderón-Argelich, A.; Benetti, S.; Anguelovski, I.; Connolly, J.J.; Langemeyer, J.; Baró, F. Tracing and Building up Environmental Justice Considerations in the Urban Ecosystem Service Literature: A Systematic Review. Landsc. Urban Plan. 2021 , 214 , 104130. [ Google Scholar ] [ CrossRef ]
Endsley, K.A.; Brown, D.G.; Bruch, E. Housing Market Activity Is Associated with Disparities in Urban and Metropolitan Vegetation. Ecosystems 2018 , 21 , 1593–1607. [ Google Scholar ] [ CrossRef ]
Maheshwari, A.; Jain, Y.; Chopra, S.S. Spatial Inequity Index for Essential Facility Access at Building-Level in Highly Dense Urban Areas. Cities 2024 , 149 , 104926. [ Google Scholar ] [ CrossRef ]
Mansour, S.; Al Nasiri, N.; Abulibdeh, A.; Ramadan, E. Spatial Disparity Patterns of Green Spaces and Buildings in Arid Urban Areas. Build. Environ. 2022 , 208 , 108588. [ Google Scholar ] [ CrossRef ]
Sadler, R.C.; Wojciechowski, T.W.; Trangenstein, P.; Harris, A.; Buchalski, Z.; Furr-Holden, D. Linking Historical Discriminatory Housing Patterns to the Contemporary Alcohol Environment. Appl. Spat. Anal. Policy 2023 , 16 , 561–581. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Zhou, L.; Xiao, W.; Li, H.; Wang, C.; Wang, X.; Zheng, Z. Identify Social and Job Disparities in the Relationship between Job-Housing Balance and Urban Commuting Using Baidu Trajectory Big Data. Trans. GIS 2024 , 28 , 258–277. [ Google Scholar ] [ CrossRef ]
Smiley, K.T.; Hakkenberg, C.R. Race and Affluence Shape Spatio-Temporal Urbanization Trends in Greater Houston, 1997 to 2016. Land Use Policy 2020 , 99 , 105093. [ Google Scholar ] [ CrossRef ]
Yoon, E.-S.; Marmureanu, C.; Brown, R.S. School Choice and the Polarization of Public Schools in A Global City: A Bourdieusian GIS Approach. Peabody J. Educ. 2020 , 95 , 229–247. [ Google Scholar ] [ CrossRef ]
Pak, S.S.; Ratoza, M.; Cheuy, V. Examining Rehabilitation Access Disparities: An Integrated Analysis of Electronic Health Record Data and Population Characteristics through Bivariate Choropleth Mapping. BMC Health Serv. Res. 2024 , 24 , 170. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Mao, K.; Li, J.; Yan, H. Measuring the Spatial Accessibility of Parks in Wuhan, China, Using a Comprehensive Multimodal 2SFCA Method. ISPRS Int. J. Geo-Inf. 2023 , 12 , 357. [ Google Scholar ] [ CrossRef ]
Dai, D. Racial/Ethnic and Socioeconomic Disparities in Urban Green Space Accessibility: Where to Intervene? Landsc. Urban Plan. 2011 , 102 , 234–244. [ Google Scholar ] [ CrossRef ]
Lardier, D.T.T.; Blackwell, M.A.A.; Beene, D.; Lin, Y. Social Vulnerabilities and Spatial Access to Primary Healthcare through Car and Public Transportation System in the Albuquerque, NM, Metropolitan Area: Assessing Disparities through GIS and Multilevel Modeling. J. Urban Health-Bull. N. Y. Acad. Med. 2023 , 100 , 88–102. [ Google Scholar ] [ CrossRef ]
Farber, S.; Bartholomew, K.; Li, X.; Paez, A.; Habib, K.M.N. Assessing Social Equity in Distance Based Transit Fares Using a Model of Travel Behavior. Transp. Res. Part-Policy Pract. 2014 , 67 , 291–303. [ Google Scholar ] [ CrossRef ]
Attard, M.; Guzman, L.A.; Oviedo, D. Urban Space Distribution: The Case for a More Equitable Mobility System. Case Stud. Transp. Policy 2023 , 14 , 101096. [ Google Scholar ] [ CrossRef ]
Huynh, H.N. Analysis of Public Transport (in) Accessibility and Land-Use Pattern in Different Areas in Singapore. In International Conference on Computational Science ; Springer International Publishing: Cham, Switzerland, 2022; pp. 154–161. [ Google Scholar ]
Kerr, J.; Frank, L.; Sallis, J.F.; Saelens, B.; Glanz, K.; Chapman, J. Predictors of Trips to Food Destinations. Int. J. Behav. Nutr. Phys. Act. 2012 , 9 , 58. [ Google Scholar ] [ CrossRef ]
Li, J.; Zhan, W.; Hong, F.; Lai, J.; Dong, P.; Liu, Z.; Wang, C.; Huang, F.; Li, L.; Wang, C.; et al. Similarities and Disparities in Urban Local Heat Islands Responsive to Regular-, Stable-, and Counter-Urbanization: A Case Study of Guangzhou, China. Build. Environ. 2021 , 199 , 107935. [ Google Scholar ] [ CrossRef ]
Chakraborty, T.; Hsu, A.; Manya, D.; Sheriff, G. A Spatially Explicit Surface Urban Heat Island Database for the United States: Characterization, Uncertainties, and Possible Applications. ISPRS J. Photogramm. Remote Sens. 2020 , 168 , 74–88. [ Google Scholar ] [ CrossRef ]
Casey, R.; Chaix, B.; Weber, C.; Schweitzer, B.; Charreire, H.; Salze, P.; Badariotti, D.; Banos, A.; Oppert, J.-M.; Simon, C. Spatial Accessibility to Physical Activity Facilities and to Food Outlets and Overweight in French Youth. Int. J. Obes. 2012 , 36 , 914–919. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Csomós, G.; Farkas, J.Z.; Kovács, Z. A GIS-Based Assessment of Different Income Groups’ Access to Multiple Types of Green Areas in Budapest, Hungary. Habitat Int. 2024 , 146 , 103054. [ Google Scholar ] [ CrossRef ]
Semenzato, P.; Costa, A.; Campagnaro, T. Accessibility to Urban Parks: Comparing GIS Based Measures in the City of Padova (Italy). Urban For. Urban Green. 2023 , 82 , 127896. [ Google Scholar ] [ CrossRef ]
Pica, A.; Lämmle, L.; Burnelli, M.; Del Monte, M.; Donadio, C.; Faccini, F.; Lazzari, M.; Mandarino, A.; Melelli, L.; Perez Filho, A.; et al. Urban Geomorphology Methods and Applications as a Guideline for Understanding the City Environment. Land 2024 , 13 , 907. [ Google Scholar ] [ CrossRef ]
Pala, Ö.N.; Acar, S. Assessing a Greening Tool through the Lens of Green Gentrification: Socio-Spatial Change around the Nation’s Gardens of Istanbul. Cities 2024 , 150 , 105023. [ Google Scholar ] [ CrossRef ]
Neckerman, K.M.; Lovasi, G.S.; Davies, S.; Purciel, M.; Quinn, J.; Feder, E.; Raghunath, N.; Wasserman, B.; Rundle, A. Disparities in Urban Neighborhood Conditions: Evidence from GIS Measures and Field Observation in New York City. J. Public Health Policy 2009 , 30 , S264–S285. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Bosisio, A.; Moreno-Jiménez, A. Spatially Disaggregated Assessment of Environmental Inequalities among Vulnerable Groups Due to Urban Rainstorm Flooding. Appl. Spat. Anal. Policy 2022 , 15 , 1263–1285. [ Google Scholar ] [ CrossRef ]
Stromberg, P.M.; Öhrner, E.; Brockwell, E.; Liu, Z. Valuing Urban Green Amenities with an Inequality Lens. Ecol. Econ. 2021 , 186 , 107067. [ Google Scholar ] [ CrossRef ]
Zhang, L.; Zhou, T.; Mao, C. Does the Difference in Urban Public Facility Allocation Cause Spatial Inequality in Housing Prices? Evidence from Chongqing, China. Sustainability 2019 , 11 , 6096. [ Google Scholar ] [ CrossRef ]
Roldán-Valcarce, A.; Jato-Espino, D.; Manchado, C.; Bach, P.M.; Kuller, M. Vulnerability to Urban Flooding Assessed Based on Spatial Demographic, Socio-Economic and Infrastructure Inequalities. Int. J. Disaster Risk Reduct. 2023 , 95 , 103894. [ Google Scholar ] [ CrossRef ]
Graham, S.; Lewis, B.; Flanagan, B.; Watson, M.; Peipins, L. Travel by Public Transit to Mammography Facilities in 6 US Urban Areas. J. Transp. Health 2015 , 2 , 602–609. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Beach, S.R.; Kinnee, E.; Schulz, R. Caregiving and Place: Combining Geographic Information System (GIS) and Survey Methods to Examine Neighborhood Context and Caregiver Outcomes. Innov. Aging 2019 , 3 , igz025. [ Google Scholar ] [ CrossRef ]
Pallathadka, A.; Pallathadka, L.; Rao, S.; Chang, H.; Van Dommelen, D. Using GIS-Based Spatial Analysis to Determine Urban Greenspace Accessibility for Different Racial Groups in the Backdrop of COVID-19: A Case Study of Four US Cities. Geojournal 2022 , 87 , 4879–4899. [ Google Scholar ] [ CrossRef ]
La Rosa, D. Accessibility to Greenspaces: GIS Based Indicators for Sustainable Planning in a Dense Urban Context. Ecol. Indic. 2014 , 42 , 122–134. [ Google Scholar ] [ CrossRef ]
Gomes, A.; Burdett, R. Spatial and Visual Comparison Analysis of Health Disparities in London Neighbourhoods: The Case of Southwark and Lambeth. J. Hosp. Manag. Health Policy 2024 , 8 . [ Google Scholar ] [ CrossRef ]
Biljecki, F.; Zhao, T.; Liang, X.; Hou, Y. Sensitivity of Measuring the Urban Form and Greenery Using Street-Level Imagery: A Comparative Study of Approaches and Visual Perspectives. Int. J. Appl. Earth Obs. Geoinf. 2023 , 122 , 103385. [ Google Scholar ] [ CrossRef ]
Korah, P.I.; Akaateba, M.A.; Akanbang, B.A.A. Spatio-Temporal Patterns and Accessibility of Green Spaces in Kumasi, Ghana. Habitat Int. 2024 , 144 , 103010. [ Google Scholar ] [ CrossRef ]
Guo, Y.; Zhao, S.; Zhao, X.; Wang, H.; Shi, W.; Song, C.; Li, J.; Lin, T.; Ye, H.; Zhan, G. Evaluation of the Spatiotemporal Change of Ecological Quality under the Context of Urban Expansion-A Case Study of Typical Urban Agglomerations in China. Remote Sens. 2024 , 16 , 45. [ Google Scholar ] [ CrossRef ]
Lian, J.; Nijhuis, S.; Bracken, G.; Wu, X.; Wu, X.; Chen, D. Conservation and Development of the Historic Garden in a Landscape Context: A Systematic Literature Review. Landsc. Urban Plan. 2024 , 246 , 105027. [ Google Scholar ] [ CrossRef ]
Page, M.J.; McKenzie, J.E.; Bossuyt, P.M.; Boutron, I.; Hoffmann, T.C.; Mulrow, C.D.; Shamseer, L.; Tetzlaff, J.M.; Akl, E.A.; Brennan, S.E. The PRISMA 2020 Statement: An Updated Guideline for Reporting Systematic Reviews. BMJ 2021 , 372 , n71. [ Google Scholar ] [ CrossRef ]
Miller, E.B.; Seyfried, A.P.; Pender, S.E.; Heard, K.; Meindl, G.A. Racial Disparities in Access to Public Green Spaces: Using Geographic Information Systems to Identify Underserved Populations in a Small American City. Environ. Justice 2022 , 15 , 246–256. [ Google Scholar ] [ CrossRef ]
Bloch, J.R.; Cordivano, S.; Gardner, M.; Barkin, J. Beyond Bus Fare: Deconstructing Prenatal Care Travel among Low-Income Urban Mothers through a Mix Methods GIS Study. Contemp. Nurse 2018 , 54 , 233–245. [ Google Scholar ] [ CrossRef ]
Braun, L.M.; Rodriguez, D.A.; Gordon-Larsen, P. Social (in)Equity in Access to Cycling Infrastructure: Cross-Sectional Associations between Bike Lanes and Area-Level Sociodemographic Characteristics in 22 Large US Cities. J. Transp. Geogr. 2019 , 80 , 102544. [ Google Scholar ] [ CrossRef ]
Chavehpour, Y.; Rashidian, A.; Woldemichael, A.; Takian, A. Inequality in Geographical Distribution of Hospitals and Hospital Beds in Densely Populated Metropolitan Cities of Iran. BMC Health Serv. Res. 2019 , 19 , 614. [ Google Scholar ] [ CrossRef ]
Costa, C.; Tenedorio, J.A.; Santana, P. Disparities in Geographical Access to Hospitals in Portugal. ISPRS Int. J. Geo-Inf. 2020 , 9 , 567. [ Google Scholar ] [ CrossRef ]
Fasihi, H. Urban Parks and Their Accessibility in Tehran, Iran. Environ. Justice 2019 , 12 , 242–249. [ Google Scholar ] [ CrossRef ]
Gao, Q.-L.; Yue, Y.; Tu, W.; Cao, J.; Li, Q.-Q. Segregation or Integration? Exploring Activity Disparities between Migrants and Settled Urban Residents Using Human Mobility Data. Trans. GIS 2021 , 25 , 2791–2820. [ Google Scholar ] [ CrossRef ]
Ghasemi, K.; Behzadfar, M.; Borhani, K. Spatial Analysis of Leisure Land Uses in Tehran: Assessing Inequity Using the MARCOS Method within a GIS Framework. Heliyon 2023 , 9 , e19691. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Guan, J.; Wang, R.; Van Berkel, D.; Liang, Z. How Spatial Patterns Affect Urban Green Space Equity at Different Equity Levels: A Bayesian Quantile Regression Approach. Landsc. Urban Plan. 2023 , 233 , 104709. [ Google Scholar ] [ CrossRef ]
Ha, H.J.; Lee, J.; Kim, J.; Kim, Y. Uncovering Inequalities in Food Accessibility between Koreans and Japanese in 1930s Colonial Seoul Using GIS and Open-Source Transport Analytics Tools. Sustainability 2022 , 14 , 11852. [ Google Scholar ] [ CrossRef ]
Hoffimann, E.; Barros, H.; Ribeiro, A.I. Socioeconomic Inequalities in Green Space Quality and Accessibility—Evidence from a Southern European City. Int. J. Environ. Res. Public Health 2017 , 14 , 916. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Houston, D.; Ong, P. Arts Accessibility to Major Museums and Cultural/Ethnic Institutions in Los Angeles: Can School Tours Overcome Neighborhood Disparities? Environ. Plan. -Econ. Space 2013 , 45 , 728–748. [ Google Scholar ] [ CrossRef ]
Kestens, Y.; Daniel, M. Social Inequalities in Food Exposure Around Schools in an Urban Area. Am. J. Prev. Med. 2010 , 39 , 33–40. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Khashoggi, B.F.; Murad, A. Use of 2SFCA Method to Identify and Analyze Spatial Access Disparities to Healthcare in Jeddah, Saudi Arabia. Appl. Sci. 2021 , 11 , 9537. [ Google Scholar ] [ CrossRef ]
Larsen, K.; Gilliland, J. Mapping the Evolution of “food Deserts” in a Canadian City: Supermarket Accessibility in London, Ontario, 1961–2005. Int. J. Health Geogr. 2008 , 7 , 16. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Li, L.; Du, Q.; Ren, F.; Ma, X. Assessing Spatial Accessibility to Hierarchical Urban Parks by Multi-Types of Travel Distance in Shenzhen, China. Int. J. Environ. Res. Public Health 2019 , 16 , 1038. [ Google Scholar ] [ CrossRef ]
Liu, M.; Luo, S.; Du, X. Exploring Equity in Healthcare Services: Spatial Accessibility Changes during Subway Expansion. ISPRS Int. J. GEO-Inf. 2021 , 10 , 439. [ Google Scholar ] [ CrossRef ]
Liu, M.; Zhang, Z.-M.; Yang, M.-Y.; Geng, Y.-P.; Ou, X.-K. Analysis of Urban Public Greenspace Pattern Based on Landscape Metrics in Kunming. In Proceedings of the Civil Engineering and Urban Planning IV: Proceedings of the 4th International Conference on Civil Engineering and Urban Planning, Beijing, China, 25–27 July 2015; Liu, Y.-M., Tang, B., Tong, Z.X., Bao, Z.Q., Fu, D., Eds.; CRC Press: Boca Raton, FL, USA, 2016; pp. 127–131. [ Google Scholar ]
Lofti, S.; Koohsari, M.J. Measuring Objective Accessibility to Neighborhood Facilities in the City (A Case Study: Zone 6 in Tehran, Iran). Cities 2009 , 26 , 133–140. [ Google Scholar ] [ CrossRef ]
Maroko, A.R.; Maantay, J.A.; Sohler, N.L.; Grady, K.L.; Arno, P.S. The Complexities of Measuring Access to Parks and Physical Activity Sites in New York City: A Quantitative and Qualitative Approach. Int. J. Health Geogr. 2009 , 8 , 34. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Moos, N.; Juergens, C.; Redecker, A.P. Combined Small- and Large-Scale Geo-Spatial Analysis of the Ruhr Area for an Environmental Justice Assessment. Sustainability 2022 , 14 , 3447. [ Google Scholar ] [ CrossRef ]
Mosammam, H.M.; Sarrafi, M.; Nia, J.T.; Mosammam, A.M. Measuring Food Deserts via GIS-Based Multicriteria Decision Making: The Case of Tehran. Prof. Geogr. 2017 , 69 , 455–471. [ Google Scholar ] [ CrossRef ]
Ohri-Vachaspati, P.; DeWeese, R.S.; Acciai, F.; DeLia, D.; Tulloch, D.; Tong, D.; Lorts, C.; Yedidia, M.J. Healthy Food Access in Low-Income High-Minority Communities: A Longitudinal Assessment-2009–2017. Int. J. Environ. Res. Public Health 2019 , 16 , 2354. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Park, C.; Chang, J.S. Spatial Equity of Excess Commuting by Transit in Seoul. Transp. Plan. Technol. 2020 , 43 , 101–112. [ Google Scholar ] [ CrossRef ]
Patino, J.E. Analyzing Long-Term Availability of Urban Green Space by Socioeconomic Status in Medellin, Colombia, Using Open Data and Toolst. In Proceedings of the 2020 IEEE Latin American GRSS & ISPRS Remote Sensing Conference (LAGIRS), Santiago, Chile, 22–26 March 2020; pp. 87–92. [ Google Scholar ]
Pipitone, J.M.; Jovic, S. Urban Green Equity and COVID-19: Effects on Park Use and Sense of Belonging in New York City. Urban For. Urban Green. 2021 , 65 , 127338. [ Google Scholar ] [ CrossRef ]
Salehabadi, A.M.; Ghoddusifar, S.H.; Mohammadpor, A. Creation of an Urban Park New ASD Index with a Spatial Distribution Coefficient (Case Study: Region 1 of Tehran). Inf. Construccion 2023 , 75 , e512. [ Google Scholar ] [ CrossRef ]
Schensul, J.J.; Nair, S.; Bilgi, S.; Cromley, E.; Kadam, V.; Mello, S.D.; Donta, B. Availability, Accessibility and Promotion of Smokeless Tobacco in a Low-Income Area of Mumbai. Tob. Control 2013 , 22 , 324–330. [ Google Scholar ] [ CrossRef ]
Simelius, S. Networks of Inequality: Access to Water in Roman Pompeii. J. Comput. Appl. Archaeol. 2024 , 7 , 54–74. [ Google Scholar ] [ CrossRef ]
Stepniak, M.; Goliszek, S. Spatio-Temporal Variation of Accessibility by Public Transport-The Equity Perspective. In The Rise of Big Spatial Data ; Springer: Cham, Switzerland, 2017; pp. 241–261. [ Google Scholar ]
Xiao, Y.; Wang, D.; Fang, J. Exploring the Disparities in Park Access through Mobile Phone Data: Evidence from Shanghai, China. Landsc. Urban Plan. 2019 , 181 , 80–91. [ Google Scholar ] [ CrossRef ]
Zhou, X.; Kim, J. Social Disparities in Tree Canopy and Park Accessibility: A Case Study of Six Cities in Illinois Using GIS and Remote Sensing. Urban For. Urban Green. 2013 , 12 , 88–97. [ Google Scholar ] [ CrossRef ]
Bruton, C.M.; Floyd, M.F. Disparities in Built and Natural Features of Urban Parks: Comparisons by Neighborhood Level Race/Ethnicity and Income. J. Urban Health-Bull. N. Y. Acad. Med. 2014 , 91 , 894–907. [ Google Scholar ] [ CrossRef ]
Dai, D. Black Residential Segregation, Disparities in Spatial Access to Health Care Facilities, and Late-Stage Breast Cancer Diagnosis in Metropolitan Detroit. Health Place 2010 , 16 , 1038–1052. [ Google Scholar ] [ CrossRef ]
Eckert, J.; Shetty, S. Food Systems, Planning and Quantifying Access: Using GIS to Plan for Food Retail. Appl. Geogr. 2011 , 31 , 1216–1223. [ Google Scholar ] [ CrossRef ]
Fulcher, C.; Kaukinen, C. Mapping and Visualizing the Location HIV Service Providers: An Exploratory Spatial Analysis of Toronto Neighborhoods. AIDS Care—Psychol. Socio-Med. Asp. AIDSHIV 2005 , 17 , 386–396. [ Google Scholar ] [ CrossRef ]
Guerrero, E.G.; Kao, D. Racial/Ethnic Minority and Low-Income Hotspots and Their Geographic Proximity to Integrated Care Providers. Subst. Abuse Treat. Prev. Policy 2013 , 8 , 34. [ Google Scholar ] [ CrossRef ]
Koc, B.C.; Osmond, P.; Peters, A.; Irger, M. Mapping Local Climate Zones for Urban Morphology Classification Based on Airborne Remote Sensing Data. In Proceedings of the 2017 Joint Urban Remote Sensing Event (JURSE), Dubai, United Arab Emirates, 6–8 March 2017. [ Google Scholar ]
Koohsari, M.J. Access to Public Open Space: Is Distribution Equitable across Different Socio-Economic Areas. J. Urban Environ. Eng. 2011 , 5 , 67–72. [ Google Scholar ] [ CrossRef ]
Mullachery, P.H.; Li, R.; Melly, S.; Kolker, J.; Barber, S.; Roux, A.V.D.; Bilal, U. Inequities in Spatial Accessibility to COVID-19 Testing in 30 Large US Cities. Soc. Sci. Med. 2022 , 310 , 115307. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Oh, K.; Jeong, S. Assessing the Spatial Distribution of Urban Parks Using GIS. Landsc. Urban Plan. 2007 , 82 , 25–32. [ Google Scholar ] [ CrossRef ]
Radwan, F.; Alazba, A.A.; Mossad, A. Analyzing Urban Watersheds Morphometric in Arid and Semiarid Regions Using the Complementarity of RST and GIS. Arab. J. Geosci. 2020 , 13 , 1237. [ Google Scholar ] [ CrossRef ]
Reames, T.G. Targeting Energy Justice: Exploring Spatial, Racial/Ethnic and Socioeconomic Disparities in Urban Residential Heating Energy Efficiency. Energy Policy 2016 , 97 , 549–558. [ Google Scholar ] [ CrossRef ]
Sikorska, D.; Laszkiewicz, E.; Krauze, K.; Sikorski, P. The Role of Informal Green Spaces in Reducing Inequalities in Urban Green Space Availability to Children and Seniors. Environ. Sci. Policy 2020 , 108 , 144–154. [ Google Scholar ] [ CrossRef ]
Suhong, Z.; Lifang, D.; Meiyu, H. Spatial Analysis of Commuting Mode Choice in Guangzhou, China. Chin. Geogr. Sci. 2013 , 23 , 353–364. [ Google Scholar ]
Xing, L.; Liu, Y.; Wang, B.; Wang, Y.; Liu, H. An Environmental Justice Study on Spatial Access to Parks for Youth by Using an Improved 2SFCA Method in Wuhan, China. Cities 2020 , 96 , 102405. [ Google Scholar ] [ CrossRef ]
Baro, F.; Camacho, D.A.; Perez Del Pulgar, C.; Triguero-Mas, M.; Anguelovski, I. School Greening: Right or Privilege? Examining Urban Nature within and around Primary Schools through an Equity Lens. Landsc. Urban Plan. 2021 , 208 , 104019. [ Google Scholar ] [ CrossRef ]
Burford, K.; Ganzar, L.A.; Lanza, K.; Kohl, H.W., III; Hoelscher, D.M. School-Level Economic Disparities in Police-Reported Crimes and Active Commuting to School. Int. J. Environ. Res. Public Health 2021 , 18 , 10885. [ Google Scholar ] [ CrossRef ]
Clarke, M.J.; Maantay, J.A. Optimizing Recycling in All of New York City’s Neighborhoods: Using GIS to Develop the REAP Index for Improved Recycling Education, Awareness, and Participation. Resour. Conserv. Recycl. 2006 , 46 , 128–148. [ Google Scholar ] [ CrossRef ]
Laszkiewicz, E.; Sikorska, D. Children’s Green Walk to School: An Evaluation of Welfare-Related Disparities in the Visibility of Greenery among Children. Environ. Sci. Policy 2020 , 110 , 1–13. [ Google Scholar ] [ CrossRef ]
McGrath, K.; Bonuck, K.; Mann, M. Exploratory Spatial Analysis of Autism Rates in New York School Districts: Role of Sociodemographic and Language Differences. J. Neurodev. Disord. 2020 , 12 , 35. [ Google Scholar ] [ CrossRef ] [ PubMed ]
McLoughlin, G.M.; McCarthy, J.A.; McGuirt, J.T.; Singleton, C.R.; Dunn, C.G.; Gadhoke, P. Addressing Food Insecurity through a Health Equity Lens: A Case Study of Large Urban School Districts during the COVID-19 Pandemic. J. Urban Health-Bull. N. Y. Acad. Med. 2020 , 97 , 759–775. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Abutaleb, K.; Mudede, M.F.; Nkongolo, N.; Newete, S.W. Estimating Urban Greenness Index Using Remote Sensing Data: A Case Study of an Affluent vs Poor Suburbs in the City of Johannesburg. Egypt. J. Remote Sens. Space Sci. 2021 , 24 , 343–351. [ Google Scholar ] [ CrossRef ]
Anwar, M.M.; Hashim, M.; Aziz, A.; Stocco, A.; Abdo, H.G.; Almohamad, H.; Al Dughairi, A.A.; Al-Mutiry, M. Urban Green Spaces Distribution and Disparities in Congested Populated Areas: A Geographical Assessment from Pakistan. Sustainability 2023 , 15 , 8059. [ Google Scholar ] [ CrossRef ]
Bikomeye, J.C.; Namin, S.; Anyanwu, C.; Rublee, C.S.; Ferschinger, J.; Leinbach, K.; Lindquist, P.; Hoppe, A.; Hoffman, L.; Hegarty, J.; et al. Resilience and Equity in a Time of Crises: Investing in Public Urban Greenspace Is Now More Essential than Ever in the US and Beyond. Int. J. Environ. Res. Public Health 2021 , 18 , 8420. [ Google Scholar ] [ CrossRef ]
Buckland, M.; Pojani, D. Green Space Accessibility in Europe: A Comparative Study of Five Major Cities. Eur. Plan. Stud. 2022 , 31 , 146–167. [ Google Scholar ] [ CrossRef ]
Chen, Z.; Huang, G. Greenspace to Meet People’s Demand: A Case Study of Beijing in 2005 and 2015. Remote Sens. 2021 , 13 , 4310. [ Google Scholar ] [ CrossRef ]
Coutts, C.; Miles, R. Greenways as Green Magnets: The Relationship between the Race of Greenway Users and Race in Proximal Neighborhoods. J. Leis. Res. 2011 , 43 , 317–333. [ Google Scholar ] [ CrossRef ]
Csomós, G.; Farkas, J.Z.; Kovács, Z. Access to Urban Green Spaces and Environmental Inequality in Post-Socialist Cities. Hung. Geogr. Bull. 2020 , 69 , 191–207. [ Google Scholar ] [ CrossRef ]
Gargiulo, I.; Garcia, X.; Benages-Albert, M.; Martinez, J.; Pfeffer, K.; Vall-Casas, P. Women’s Safety Perception Assessment in an Urban Stream Corridor: Developing a Safety Map Based on Qualitative GIS. Landsc. Urban Plan. 2020 , 198 , 103779. [ Google Scholar ] [ CrossRef ]
Ghanem, A.; Edirisinghe, R. Socio-Economic Disparities in Greenspace Quality: Insights from the City of Melbourne. Smart Sustain. Built Environ. 2024 , 13 , 309–329. [ Google Scholar ] [ CrossRef ]
Iraegui, E.; Augusto, G.; Cabral, P. Assessing Equity in the Accessibility to Urban Green Spaces According to Different Functional Levels. ISPRS Int. J. Geo-Inf. 2020 , 9 , 308. [ Google Scholar ] [ CrossRef ]
Kuang, W.; Dou, Y. Investigating the Patterns and Dynamics of Urban Green Space in China’s 70 Major Cities Using Satellite Remote Sensing. Remote Sens. 2020 , 12 , 1929. [ Google Scholar ] [ CrossRef ]
Leng, S.; Sun, R.; Yan, M.; Chen, L. Prevalent Underestimation of Tree Cooling Efficiency Attributed to Urban Intrinsic Heterogeneity. Sustain. Cities Soc. 2024 , 103 , 105277. [ Google Scholar ] [ CrossRef ]
Matthew McConnachie, M.; Shackleton, C.M. Public Green Space Inequality in Small Towns in South Africa. Habitat Int. 2010 , 34 , 244–248. [ Google Scholar ] [ CrossRef ]
Mudede, M.F.; Newete, S.W.; Abutaleb, K.; Nkongolo, N. Monitoring the Urban Environment Quality in the City of Johannesburg Using Remote Sensing Data. J. Afr. Earth Sci. 2020 , 171 , 103969. [ Google Scholar ] [ CrossRef ]
Park, Y.; Guldmann, J.-M. Understanding Disparities in Community Green Accessibility under Alternative Green Measures: A Metropolitan-Wide Analysis of Columbus, Ohio, and Atlanta, Georgia. Landsc. Urban Plan. 2020 , 200 , 103806. [ Google Scholar ] [ CrossRef ]
Pham, T.-T.-H.; Apparicio, P.; Seguin, A.-M.; Landry, S.; Gagnon, M. Spatial Distribution of Vegetation in Montreal: An Uneven Distribution or Environmental Inequity? Landsc. Urban Plan. 2012 , 107 , 214–224. [ Google Scholar ] [ CrossRef ]
Phillips, A.; Plastara, D.; Khan, A.Z.; Canters, F. Integrating Public Perceptions of Proximity and Quality in the Modelling of Urban Green Space Access. Landsc. Urban Plan. 2023 , 240 , 104875. [ Google Scholar ] [ CrossRef ]
Sathyakumar, V.; Ramsankaran, R.A.A.J.; Bardhan, R. Linking Remotely Sensed Urban Green Space (UGS) Distribution Patterns and Socio-Economic Status (SES)-A Multi-Scale Probabilistic Analysis Based in Mumbai, India. Gisci. Remote Sens. 2019 , 56 , 645–669. [ Google Scholar ] [ CrossRef ]
Shargo, I.; Hall, J.; Deng, A.; Khanjar, N.; Edwards, C.; Berman, I.; Galarraga, J.; Wilson, S. Proximity of Urban Farms to Contaminated Sites in Baltimore, Maryland. Landsc. J. 2021 , 40 , 17–33. [ Google Scholar ] [ CrossRef ]
Wuestemann, H.; Kalisch, D.; Kolbe, J. Access to Urban Green Space and Environmental Inequalities in Germany. Landsc. Urban Plan. 2017 , 164 , 124–131. [ Google Scholar ] [ CrossRef ]
Yang, B. Assessing Spatial Disparities and Spatial-Temporal Dynamic of Urban Green Spaces: A Case Study of City of Chicago. J. Korean Soc. Surv. Geod. Photogramm. Cartogr. 2020 , 38 , 487–496. [ Google Scholar ] [ CrossRef ]
Zangiabadi, A.; Rakhshaninasab, H.R. The statistical-spatial analysis of urban green space development indices (Case study: Isfahan urban zones). J. Environ. Stud. 2009 , 35 , 105–116. [ Google Scholar ]
Zhang, X.; Zhou, S.; Lin, R.; Su, L. Relationship between Long-Term Residential Green Exposure and Individuals’ Mental Health: Moderated by Income Differences and Residential Location in Urban China. Int. J. Environ. Res. Public Health 2020 , 17 , 8955. [ Google Scholar ] [ CrossRef ]
Zhong, C.; Yin, X.; Fallah-Shorshani, M.; Islam, T.; McConnell, R.; Fruin, S.; Franklin, M. Disparities in Greenspace Associated with Sleep Duration among Adolescent Children in Southern California. Environ. Epidemiol. 2023 , 7 , e264. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Zong, W.; Qin, L.; Jiao, S.; Chen, H.; Zhang, R. An Innovative Approach for Equitable Urban Green Space Allocation through Population Demand and Accessibility Modeling. Ecol. Indic. 2024 , 160 , 111861. [ Google Scholar ] [ CrossRef ]
Kolosna, C.; Spurlock, D. Uniting Geospatial Assessment of Neighborhood Urban Tree Canopy with Plan and Ordinance Evaluation for Environmental Justice. Urban For. Urban Green. 2019 , 40 , 215–223. [ Google Scholar ] [ CrossRef ]
Williams, G.E.; Diven, D.G. Seeking Shade Equity: Tree Canopy Coverage in Public Schools in Austin, TX. Pediatr. Dermatol. 2024 , 41 , 433–437. [ Google Scholar ] [ CrossRef ]
Bauer, S.R.; Monuteaux, M.C.; Fleegler, E.W. Geographic Disparities in Access to Agencies Providing Income-Related Social Services. J. Urban Health-Bull. N. Y. Acad. Med. 2015 , 92 , 853–863. [ Google Scholar ] [ CrossRef ]
Bloch, J.R. Using Geographical Information Systems to Explore Disparities in Preterm Birth Rates Among Foreign-Born and US-Born Black Mothers. Jognn-J. Obstet. Gynecol. Neonatal Nurs. 2011 , 40 , 544–554. [ Google Scholar ] [ CrossRef ]
Borrell, L.; Northridge, M.; Miller, D.; Golembeski, C.; Spielman, S.; Sclar, E.; Lamster, I. Oral Health and Health Care for Older Adults: A Spatial Approach for Addressing Disparities and Planning Services. Spec. Care Dentist. 2006 , 26 , 252–256. [ Google Scholar ] [ CrossRef ]
Chen, Y.; Wang, B.; Liu, X.; Li, X. Mapping the Spatial Disparities in Urban Health Care Services Using Taxi Trajectories Data. Trans. GIS 2018 , 22 , 602–615. [ Google Scholar ] [ CrossRef ]
Choi, K.; Lee, Y.; Basrak, Z. Identifying Communities of Concern for Older Adults Using Spatial Analysis: Focusing on Accessibility to Health, Social, and Daily Services. J. Appl. Gerontol. 2021 , 40 , 1527–1532. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Dai, D.; Rothenberg, R.; Luo, R.; Weaver, S.R.; Stauber, C.E. Improvement of Geographic Disparities: Amelioration or Displacement? J. Urban Health-Bull. N. Y. Acad. Med. 2017 , 94 , 417–428. [ Google Scholar ] [ CrossRef ]
Foroutan, E.; Hu, T.; Zhang, F.; Yu, H. Assessing Heat Vulnerability in Philadelphia Using Geographically Weighted Principal Component Analysis (GWPCA): A Geospatial Big Data-Driven Approach. Int. J. Appl. Earth Obs. Geoinf. 2024 , 127 , 103653. [ Google Scholar ] [ CrossRef ]
Ge, Y.; He, Z. Assessing the Health Impacts of the Urban Expansion of Small Cities in China: A Case Study of Jiawang. PLoS ONE 2022 , 17 , e0279470. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Grazuleviciene, R.; Andrusaityte, S.; Grazulevicius, T.; Dedele, A. Neighborhood Social and Built Environment and Disparities in the Risk of Hypertension: A Cross-Sectional Study. Int. J. Environ. Res. Public Health 2020 , 17 , 7696. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Habermann, M.; Marcílio, I.; Lopes, M.; Prado, R.; Souza, M.; Gouveia, N. Social Inequality and Exposure to Magnetic Fields in the Metropolitan Region of São Paulo, Southeastern Brazil. Rev. Saude Publica 2010 , 44 , 703–709. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Harris, K.M. Mapping Inequality: Childhood Asthma and Environmental Injustice, a Case Study of St. Louis, Missouri. Soc. Sci. Med. 2019 , 230 , 91–110. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Kassie, D.; Roudot, A.; Dessay, N.; Piermay, J.-L.; Salem, G.; Fournet, F. Development of a Spatial Sampling Protocol Using GIS to Measure Health Disparities in Bobo-Dioulasso, Burkina Faso, a Medium-Sized African City. Int. J. Health Geogr. 2017 , 16 , 14. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Kim, H.; Kim, D.; Paul, C.; Lee, C.K. The Spatial Allocation of Hospitals With Negative Pressure Isolation Rooms in Korea: Are We Prepared for New Outbreaks? Int. J. Health Policy Manag. 2020 , 9 , 475–483. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Krieger, N. A Century of Census Tracts: Health & the Body Politic (1906–2006). J. Urban Health-Bull. N. Y. Acad. Med. 2006 , 83 , 355–361. [ Google Scholar ]
Lee, J.; Vojnovic, I.; Grady, S.C. What Lies beyond the Built Environment ? Exploring “Walkability” across the Detroit Region. Appl. Geogr. 2022 , 141 , 102670. [ Google Scholar ] [ CrossRef ]
Lee, J.; Ramirez, I.J. Geography of Disparity: Connecting COVID-19 Vulnerability and Social Determinants of Health in Colorado. Behav. Med. 2022 , 48 , 72–84. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Li, X. Investigating the Spatial Distribution of Resident’s Outdoor Heat Exposure across Neighborhoods of Philadelphia, Pennsylvania Using Urban Microclimate Modeling. Sustain. Cities Soc. 2021 , 72 , 103066. [ Google Scholar ] [ CrossRef ]
Martínez, J. The Use of GIS and Indicators to Monitor Intra-Urban Inequalities. A Case Study in Rosario, Argentina. Habitat Int. 2009 , 33 , 387–396. [ Google Scholar ] [ CrossRef ]
Morshed, N.; Haskard-Zolnierek, K.; Zhan, F.B. Geographic Variations of Racial/Ethnic Disparities in Late-Stage Diagnosis of Childhood Cancer in Texas. South. Med. J. 2020 , 113 , 224–231. [ Google Scholar ] [ CrossRef ]
Olyaeemanesh, A.; Woldemichael, A.; Takian, A.; Sari, A.A. Availability and Inequality in Accessibility of Health Centre-Based Primary Healthcare in Ethiopia. PLoS ONE 2019 , 14 , e0213896. [ Google Scholar ] [ CrossRef ]
Padilla, C.M.; Kihal-Talantikit, W.; Perez, S.; Deguen, S. Use of Geographic Indicators of Healthcare, Environment and Socioeconomic Factors to Characterize Environmental Health Disparities. Environ. Health 2016 , 15 , 79. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Planey, A.M.; Grady, S.C.; Fetaw, R.; McLafferty, S.L. Spaces of Segregation and Health: Complex Associations for Black Immigrant and US-Born Mothers in New York City. J. Urban Health-Bull. N. Y. Acad. Med. 2022 , 99 , 469–481. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Saunders, M.R.; Lee, H.; Maene, C.; Schuble, T.; Cagney, K.A. Proximity Does Not Equal Access: Racial Disparities in Access to High Quality Dialysis Facilities. J. Racial Ethn. Health Disparities 2014 , 1 , 291–299. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Smiley, K.T. Racial and Environmental Inequalities in Spatial Patterns in Asthma Prevalence in the US South. Southeast. Geogr. 2019 , 59 , 389–402. [ Google Scholar ] [ CrossRef ]
Suplee, P.D.; Bloch, J.R.; Hillier, A.; Herbert, T. Using Geographic Information Systems to Visualize Relationships Between Perinatal Outcomes and Neighborhood Characteristics When Planning Community Interventions. Jognn-J. Obstet. Gynecol. Neonatal Nurs. 2018 , 47 , 158–172. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Witten, K.; Pearce, J.; Day, P. Neighbourhood Destination Accessibility Index: A GIS Tool for Measuring Infrastructure Support for Neighbourhood Physical Activity. Environ. Plan.-Econ. Space 2011 , 43 , 205–223. [ Google Scholar ] [ CrossRef ]
Zandieh, R.; Martinez, J.; Flacke, J. Older Adults’ Outdoor Walking and Inequalities in Neighbourhood Green Spaces Characteristics. Int. J. Environ. Res. Public Health 2019 , 16 , 4379. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Mavoa, S.; Koohsari, M.J.; Badland, H.M.; Davern, M.; Feng, X.; Astell-Burt, T.; Giles-Corti, B. Area-Level Disparities of Public Open Space: A Geographic Information Systems Analysis in Metropolitan Melbourne. Urban Policy Res. 2015 , 33 , 306–323. [ Google Scholar ] [ CrossRef ]
Alberich, J.; Perez-Albert, Y.; Muro Morales, J.I.; Bustamante Picon, E. Environmental Justice and Urban Parks. A Case Study Applied to Tarragona (Spain). Urban Sci. 2021 , 5 , 62. [ Google Scholar ] [ CrossRef ]
Brainard, J.; Jones, A.; Bateman, I.J.; Lovett, A.A. Equal Access for All? Ethnicity and Public Park Availability in Birmingham (UK). Work. Pap.—Cent. Soc. Econ. Res. Glob. Environ. 2006 , 1–38. Available online: https://www.researchgate.net/publication/290179715_Equal_access_for_all_Ethnicity_and_public_park_Availability_in_Birmingham_UK (accessed on 25 February 2024).
Feng, S.; Chen, L.; Sun, R.; Feng, Z.; Li, J.; Khan, M.S.; Jing, Y. The Distribution and Accessibility of Urban Parks in Beijing, China: Implications of Social Equity. Int. J. Environ. Res. Public Health 2019 , 16 , 4894. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Kong, X.; Sun, Y.; Xu, C. Effects of Urbanization on the Dynamics and Equity of Access to Urban Parks from 2000 to 2015 in Beijing, China. Forests 2021 , 12 , 1796. [ Google Scholar ] [ CrossRef ]
Kweon, B.-S.; Marans, R.W.; Yi, C.-W. Parks and Quality of Life: Differences among African American and White Residents. Landsc. J. 2016 , 35 , 97–108. [ Google Scholar ] [ CrossRef ]
Rigolon, A. Parks and Young People: An Environmental Justice Study of Park Proximity, Acreage, and Quality in Denver, Colorado. Landsc. Urban Plan. 2017 , 165 , 73–83. [ Google Scholar ] [ CrossRef ]
Senol, F.; Kaya, I.A. GIS-Based Mappings of Park Accessibility at Multiple Spatial Scales: A Research Framework with the Case of Izmir (Turkey). Local Environ. 2021 , 26 , 1379–1397. [ Google Scholar ] [ CrossRef ]
Tan, P.Y.; Samsudin, R. Effects of Spatial Scale on Assessment of Spatial Equity of Urban Park Provision. Landsc. Urban Plan. 2017 , 158 , 139–154. [ Google Scholar ] [ CrossRef ]
Willemse, L. A Flowmap-Geographic Information Systems Approach to Determine Community Neighbourhood Park Proximity in Cape Town. S. Afr. Geogr. J. 2013 , 95 , 149–164. [ Google Scholar ] [ CrossRef ]
Azarderakhsh, M.; Hussain, A.; Metellus, R.; Blake, R. Investigating the Relationship between Urban Heat Island and Socioeconomic Factors in New York City. In Proceedings of the IGARSS 2023—2023 IEEE International Geoscience and Remote Sensing Symposium, Pasadena, CA, USA, 16–21 July 2023; pp. 3594–3595. [ Google Scholar ]
Downey, L. Spatial Measurement, Geography, and Urban Racial Inequality. Soc. Forces 2003 , 81 , 937–952. [ Google Scholar ] [ CrossRef ]
Kim, N.; Lee, H.; Yoon, Y. A Heterogeneous Attention Network Model for Longitudinal Analysis of Socioeconomic and Racial Inequalities in Urban Regions: Evidence from Chicago, IL. In Proceedings of the SIGSPATIAL ‘23: 31st ACM International Conference on Advances in Geographic Information Systems, Hamburg, Germany, 13–16 November 2023; pp. 614–617. [ Google Scholar ]
Shelton, T.; Poorthuis, A.; Zook, M. Social Media and the City: Rethinking Urban Socio-Spatial Inequality Using User-Generated Geographic Information. Landsc. Urban Plan. 2015 , 142 , 198–211. [ Google Scholar ] [ CrossRef ]
Widener, M.J.; Metcalf, S.S.; Bar-Yam, Y. Agent-Based Modeling of Policies to Improve Urban Food Access for Low-Income Populations. Appl. Geogr. 2013 , 40 , 1–10. [ Google Scholar ] [ CrossRef ]
Anchondo, T.M.; Ford, P.B. Neighborhood Deprivation, Neighborhood Acculturation, and the Retail Food Environment in a US-Mexico Border Urban Area. J. Hunger Environ. Nutr. 2011 , 6 , 207–219. [ Google Scholar ] [ CrossRef ]
Vaz, E.; Bacao, F.; Damasio, B.; Haynes, M.; Penfound, E. Machine Learning for Analysis of Wealth in Cities: A Spatial-Empirical Examination of Wealth in Toronto. Habitat Int. 2021 , 108 , 102319. [ Google Scholar ] [ CrossRef ]
Li, M.; Lin, J.; Ji, Z.; Chen, K.; Liu, J. Grid-Scale Poverty Assessment by Integrating High-Resolution Nighttime Light and Spatial Big Data-A Case Study in the Pearl River Delta. Remote Sens. 2023 , 15 , 4618. [ Google Scholar ] [ CrossRef ]
Saini, S.; Tripathi, V.; Verma, A. Employing Night-Time Light Images for Wealth Assessment in India: A Machine Learning Perspective. Proc. Icetit 2019 Emerg. Trends Inf. Technol. 2020 , 605 , 613–622. [ Google Scholar ]
Wang, H.; Han, H.; Zhang, J.; Zhang, D. Nighttime Light Data-Based Analysis of Spatiotemporal Patterns Evolution and Driving Forces of Economic Development in China at Prefecture Level (1992–2020). Trans. GIS 2023 , 27 , 564–591. [ Google Scholar ] [ CrossRef ]
Slovic, A.D.; Tomasiello, D.B.; Giannotti, M.; Andrade, M.D.F.; Nardocci, A.C. The Long Road to Achieving Equity: Job Accessibility Restrictions and Overlapping Inequalities in the City of Sao Paulo. J. Transp. Geogr. 2019 , 78 , 181–193. [ Google Scholar ] [ CrossRef ]
Nadybal, S.M.; Collins, T.W.; Grineski, S.E. Light Pollution Inequities in the Continental United States: A Distributive Environmental Justice Analysis. Environ. Res. 2020 , 189 , 109959. [ Google Scholar ] [ CrossRef ]
Xiao, Q.; Zhou, M.; Lyu, Y.; Lu, J.; Zhang, K.; Figueiro, M.; Wang, J.; Bauer, C. County-Level Artificial Light at Night (ALAN) in the Contiguous US (2012–2019): Spatial Variations, Temporal Trends, and Environmental Justice Analyses. Environ. Sci. Pollut. Res. 2023 , 30 , 115870–115881. [ Google Scholar ] [ CrossRef ]
Moreira, A.B.; Nobrega, R.S.; Wanderley, L.S.D.A.; Matzarakis, A. Urban Heat Island Vulnerability in the City of Recife, Pernambuco, Brazil. Weather Clim. Soc. 2024 , 16 , 105–116. [ Google Scholar ] [ CrossRef ]
Xu, X.; Qiu, W.; Li, W.; Huang, D.; Li, X.; Yang, S. Comparing Satellite Image and GIS Data Classified Local Climate Zones to Assess Urban Heat Island: A Case Study of Guangzhou. Front. Environ. Sci. 2022 , 10 , 1029445. [ Google Scholar ] [ CrossRef ]
Gong, W.; Huang, X.; White, M.; Langenheim, N. Walkability Perceptions and Gender Differences in Urban Fringe New Towns: A Case Study of Shanghai. Land 2023 , 12 , 1339. [ Google Scholar ] [ CrossRef ]
Cui, Y.; Wang, Q.; Zha, G.; Dang, Y.; Duan, X.; Wang, L.; Luo, M. Evaluation of the Accessibility of Children’s Spaces at the Community Scale: The Case Study of Hangzhou. ISPRS Int. J. Geo-Inf. 2024 , 13 , 55. [ Google Scholar ] [ CrossRef ]
Liu, M.; Yan, J.; Dai, T. A Multi-Scale Approach Mapping Spatial Equality of Urban Public Facilities for Urban Design. Heliyon 2023 , 9 , E18281. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Ki, D.; Chen, Z.; Lee, S.; Lieu, S. A Novel Walkability Index Using Google Street View and Deep Learning. Sustain. Cities Soc. 2023 , 99 , 104896. [ Google Scholar ] [ CrossRef ]
Zandieh, R.; Flacke, J.; Martinez, J.; Jones, P.; van Maarseveen, M. Do Inequalities in Neighborhood Walkability Drive Disparities in Older Adults’ Outdoor Walking? Int. J. Environ. Res. Public Health 2017 , 14 , 740. [ Google Scholar ] [ CrossRef ] [ PubMed ]
Prakash, K.; Jegankumar, R.; Libina, R.S. Modelling Differential Urban Growth Dynamics for Growth Decentralisation: A Study on Tiruchirappalli Metropolitan and Sub-Tier Towns, India. ASIA-Pac. J. Reg. Sci. 2023 , 7 , 1191–1221. [ Google Scholar ] [ CrossRef ]
Awawdeh, M.M.; Abuhadba, R.R.; Jamhawi, M.M.; Rawashdeh, A.I.; Jawarneh, R.N.; Awawdeh, M.M. Urban Expansion in Greater Irbid Municipality, Jordan: The Spatial Patterns and the Driving Factors. Geojournal 2024 , 89 , 43. [ Google Scholar ] [ CrossRef ]
Bidadian, B.; Strager, M.P.; Butler, P.; Ghadimi, H. Flood Risk Impacts from an Unlikely Source: Redlining Efforts of the 1930s in Houston, Texas. Environ. Justice 2024 . [ Google Scholar ] [ CrossRef ]
Xu, J.; Qiang, Y. Environmental Justice Implications of Flood Risk in the Contiguous United States—A Spatiotemporal Assessment of Flood Exposure Change from 2001 to 2019. Cartogr. Geogr. Inf. Sci. 2024 . [ Google Scholar ] [ CrossRef ]
Zhu, S.; Jiang, Y.; Zhang, J.; Dai, Q.; Yang, X. Evaluating the Effect of Urban Flooding on Spatial Accessibility to Emergency Shelters Based on Social Sensing Data. Trans. GIS 2024 , 28 , 23–39. [ Google Scholar ] [ CrossRef ]
Riddlesden, D.; Singleton, A.D. Broadband Speed Equity: A New Digital Divide? Appl. Geogr. 2014 , 52 , 25–33. [ Google Scholar ] [ CrossRef ]

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Keywords	Merged into	Referenced Studies
accessibility health services accessibility network analysis public transport public access Health care access spatial accessibility	Access	[ , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ]
cities city metropolitan area New York City urban area Urban areas	City	All the reviewed article
education School Schools	Education	[ , , , , , , , , ]
geographic information system geographic information systems gis spatial analysis geographic information systems (gis)	GIS	All the reviewed article used GIS
green green space green spaces greenspace urban green space urban green spaces canopy urban ecosystem services	Green space	[ , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ]
Health health services COVID-19 epidemiology health care delivery health care disparity health disparities health disparity physical activity public health urban health obesity	Health	[ , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ]
Health care health care planning health care policy	Health care	[ , , , , , , ]
Open Space public space urban parks park parks	Open space	[ , , , , , , , , , , , , , , , , , , , ]
economics equity income poverty racial disparity residence characteristics socioeconomic factors socioeconomic status socioeconomics socioeconomic socioeconomic conditions social status minority group ethnic minority	SocioEco (Socioeconomic)	[ , , , , , , , , , , , , , , , , , , , , , , , , , , ]

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Malaker, T.; Meng, Q. Urban Disparity Analytics Using GIS: A Systematic Review. Sustainability 2024 , 16 , 5956. https://doi.org/10.3390/su16145956

Malaker T, Meng Q. Urban Disparity Analytics Using GIS: A Systematic Review. Sustainability . 2024; 16(14):5956. https://doi.org/10.3390/su16145956

Malaker, Tanmoy, and Qingmin Meng. 2024. "Urban Disparity Analytics Using GIS: A Systematic Review" Sustainability 16, no. 14: 5956. https://doi.org/10.3390/su16145956

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Energy & Environmental Science

Heterostructure boosts a noble-metal-free oxygen-evolving electrocatalyst in acid.

Developing noble metal-free electrocatalysts (NMFEs) for oxygen evolution reaction (OER) is tremendously challenging in acid. Despite extensive research efforts, few reported NMFEs can compete with Ru/Ir oxides for acidic OER. Here, we reported a heterostructure-engineering method to break the activity-stability limit of OER electrocatalysts and yield a noble-metal-free oxide that competed RuO2 in terms of OER specific activity and stability in acid. Via a set of correlative operando characterizations, heterostructured Co3O4/MnO2 suppressed the in-situ reconstruction of Co3O4 and MnO2, and mitigated the electrochemical cycling-accelerated catalyst leaching, thus improving the acidic OER stability. Moreover, first-principle calculations supported that the synergy of Co and Mn in Co3O4/MnO2 lowered the theoretical OER overpotentials. Optimized Co3O4/MnO2 achieved a record activity of 10 mA cm-2 at 319±1.2 mV overpotential, and it demonstrated low degradation during the varying-current stability test (up to 200 mA cm-2) for 100 hours, making it among the best NMFEs for acidic OER. Moreover, the promising performance of Co3O4/MnO2 as the anodic catalyst was also validated in a proton-conducting membrane water electrolysis cell.

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J. Wang, Y. Zhang, Y. Wang, J. Cho, T. Chan, Y. Ha, S. Haw, C. Kao, Z. Wang, J. Lei, M. Ju, J. Tang, T. Liu, S. Zhao, Y. Dai, A. W. Baron-Wiechec, F. Chen, W. Wang, C. H. Choi, Z. Shao and M. Ni, Energy Environ. Sci. , 2024, Accepted Manuscript , DOI: 10.1039/D4EE00189C

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Heterostructure Boosts a Noble-metal-free Oxygen-evolving
Despite extensive research efforts, few reported NMFEs can compete with Ru/Ir oxides for acidic OER. Here, we reported a heterostructure-engineering method to break the activity-stability limit of OER electrocatalysts and yield a noble-metal-free oxide that competed RuO2 in terms of OER specific activity and stability in acid.

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