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15 Best Websites to Download Research Papers for Free

Is your thirst for knowledge limited by expensive subscriptions? Explore the best websites to download research papers for free and expand your academic reach.

With paywalls acting like impenetrable fortresses, accessing scholarly articles becomes a herculean task. However, a beacon of hope exists in the form of free-access platforms, quenching our thirst for intellectual wisdom. Let’s set sail on this scholarly journey.

Table of Contents

Today’s champions of academia aren’t just about offering free access, they uphold ethics and copyright respectability. Let’s delve into these repositories that are reshaping the academia world. You can download free research papers from any of the following websites.

Best Websites to Download Research Papers

#1. sci-hub – best for accessing paywalled academic papers.

Despite its contentious standing, Sci-Hub offers an invaluable service to knowledge-seekers. While navigating the tightrope between access and legality, it represents a game-changing force in the world of academic research.

#2. Library Genesis (Libgen) – Best for a Wide Range of Books and Articles

It’s not just a repository, but a vibrant confluence of multiple disciplines and interests, catering to the unique intellectual appetite of each knowledge seeker.

What are the benefits of Libgen?

Source: https://libgen.is

#3. Unpaywall – Best for Legal Open Access Versions of Scholarly Articles

What are the benefits of Unpaywall?

#4. Directory of Open Access Journals (DOAJ) – Best for Peer-Reviewed Open Access Journals

Source: https://doaj.org

#5. Open Access Button – Best for Free Versions of Paywalled Articles

What are the benefits of Open Access Button?

#6. Science Open – Best for a Wide Variety of Open Access Scientific Research

Consider Science Open as a bustling town square in the city of scientific knowledge, where scholars from all walks of life gather, discuss, and dissect over 60 million articles. 

You might also like:

#7. CORE – Best for Open Access Content Across Disciplines

With its unparalleled aggregation and comprehensive access, CORE embodies the grand orchestra of global research. It stands as an essential tool in the modern researcher’s toolkit.

#8. ERIC – Best for Education Research

What are the benefits of ERIC?

#9. PaperPanda – Best for Free Access to Research Papers

It’s like having a personal research assistant, guiding you through the maze of scholarly literature.

#10. Citationsy Archives – Best for Research Papers from Numerous Fields

Source: https://citationsy.com

#11. OA.mg – Best for Direct Download Links to Open Access Papers

Source: https://oa.mg

#12. Social Science Research Network (SSRN) – Best for Social Sciences and Humanities Research

SSRN serves as an invaluable resource for researchers in the social sciences and humanities, fostering a community that drives innovation and advancements in these fields.

#13. Project Gutenberg – Best for Free Access to eBooks

Project Gutenberg serves as a testament to the power of literature and the accessibility of knowledge. It enables readers worldwide to embark on intellectual journeys through its extensive collection of free eBooks.

#14. PLOS (Public Library of Science) – Best for Open Access to Scientific and Medical Research

As a leading publisher of open access research, PLOS fosters the dissemination of cutting-edge scientific discoveries to a global audience. 

#15. arXiv.org – Best for Preprints in Science, Mathematics, and Computer Science

In a world where knowledge is king, accessing a research paper shouldn’t feel like an impossible task. Thanks to these free and innovative websites, we can escape the barriers of paywalls and dive into a vast ocean of intellectual wealth. 

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arXiv is a free distribution service and an open-access archive for nearly 2.4 million scholarly articles in the fields of physics, mathematics, computer science, quantitative biology, quantitative finance, statistics, electrical engineering and systems science, and economics. Materials on this site are not peer-reviewed by arXiv.

arXiv is a free distribution service and an open-access archive for scholarly articles in the fields of physics, mathematics, computer science, quantitative biology, quantitative finance, statistics, electrical engineering and systems science, and economics. Materials on this site are not peer-reviewed by arXiv.

Stay up to date with what is happening at arXiv on our blog.

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• Computing Research Repository ( CoRR new , recent , search ) includes: (see detailed description ): Artificial Intelligence ; Computation and Language ; Computational Complexity ; Computational Engineering, Finance, and Science ; Computational Geometry ; Computer Science and Game Theory ; Computer Vision and Pattern Recognition ; Computers and Society ; Cryptography and Security ; Data Structures and Algorithms ; Databases ; Digital Libraries ; Discrete Mathematics ; Distributed, Parallel, and Cluster Computing ; Emerging Technologies ; Formal Languages and Automata Theory ; General Literature ; Graphics ; Hardware Architecture ; Human-Computer Interaction ; Information Retrieval ; Information Theory ; Logic in Computer Science ; Machine Learning ; Mathematical Software ; Multiagent Systems ; Multimedia ; Networking and Internet Architecture ; Neural and Evolutionary Computing ; Numerical Analysis ; Operating Systems ; Other Computer Science ; Performance ; Programming Languages ; Robotics ; Social and Information Networks ; Software Engineering ; Sound ; Symbolic Computation ; Systems and Control

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• Quantitative Biology ( q-bio new , recent , search ) includes: (see detailed description ): Biomolecules ; Cell Behavior ; Genomics ; Molecular Networks ; Neurons and Cognition ; Other Quantitative Biology ; Populations and Evolution ; Quantitative Methods ; Subcellular Processes ; Tissues and Organs

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• Electrical Engineering and Systems Science ( eess new , recent , search ) includes: (see detailed description ): Audio and Speech Processing ; Image and Video Processing ; Signal Processing ; Systems and Control
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Reference management. Clean and simple.

The top list of academic search engines

1. Google Scholar

4. science.gov, 5. semantic scholar, 6. baidu scholar, get the most out of academic search engines, frequently asked questions about academic search engines, related articles.

Academic search engines have become the number one resource to turn to in order to find research papers and other scholarly sources. While classic academic databases like Web of Science and Scopus are locked behind paywalls, Google Scholar and others can be accessed free of charge. In order to help you get your research done fast, we have compiled the top list of free academic search engines.

Google Scholar is the clear number one when it comes to academic search engines. It's the power of Google searches applied to research papers and patents. It not only lets you find research papers for all academic disciplines for free but also often provides links to full-text PDF files.

• Coverage: approx. 200 million articles
• Abstracts: only a snippet of the abstract is available
• Related articles: ✔
• References: ✔
• Cited by: ✔
• Links to full text: ✔
• Export formats: APA, MLA, Chicago, Harvard, Vancouver, RIS, BibTeX

BASE is hosted at Bielefeld University in Germany. That is also where its name stems from (Bielefeld Academic Search Engine).

• Coverage: approx. 136 million articles (contains duplicates)
• Abstracts: ✔
• Related articles: ✘
• References: ✘
• Cited by: ✘
• Export formats: RIS, BibTeX

CORE is an academic search engine dedicated to open-access research papers. For each search result, a link to the full-text PDF or full-text web page is provided.

• Coverage: approx. 136 million articles
• Links to full text: ✔ (all articles in CORE are open access)
• Export formats: BibTeX

Science.gov is a fantastic resource as it bundles and offers free access to search results from more than 15 U.S. federal agencies. There is no need anymore to query all those resources separately!

• Coverage: approx. 200 million articles and reports
• Links to full text: ✔ (available for some databases)
• Export formats: APA, MLA, RIS, BibTeX (available for some databases)

Semantic Scholar is the new kid on the block. Its mission is to provide more relevant and impactful search results using AI-powered algorithms that find hidden connections and links between research topics.

• Coverage: approx. 40 million articles
• Export formats: APA, MLA, Chicago, BibTeX

Although Baidu Scholar's interface is in Chinese, its index contains research papers in English as well as Chinese.

• Coverage: no detailed statistics available, approx. 100 million articles
• Abstracts: only snippets of the abstract are available
• Export formats: APA, MLA, RIS, BibTeX

RefSeek searches more than one billion documents from academic and organizational websites. Its clean interface makes it especially easy to use for students and new researchers.

• Coverage: no detailed statistics available, approx. 1 billion documents
• Abstracts: only snippets of the article are available
• Export formats: not available

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

Google Scholar is an academic search engine, and it is the clear number one when it comes to academic search engines. It's the power of Google searches applied to research papers and patents. It not only let's you find research papers for all academic disciplines for free, but also often provides links to full text PDF file.

Semantic Scholar is a free, AI-powered research tool for scientific literature developed at the Allen Institute for AI. Sematic Scholar was publicly released in 2015 and uses advances in natural language processing to provide summaries for scholarly papers.

BASE , as its name suggest is an academic search engine. It is hosted at Bielefeld University in Germany and that's where it name stems from (Bielefeld Academic Search Engine).

CORE is an academic search engine dedicated to open access research papers. For each search result a link to the full text PDF or full text web page is provided.

Science.gov is a fantastic resource as it bundles and offers free access to search results from more than 15 U.S. federal agencies. There is no need any more to query all those resources separately!

Find scientific papers by searching here or download the Chrome extension

Unlocking knowledge: your gateway to open access scientific papers and research data, introduction.

In the digital era, the quest for knowledge and scientific discovery is no longer confined to the walls of academia and research institutions. Welcome to [Your Website Name] , a dedicated platform for finding and downloading open access scientific papers and other research data. Our mission is to democratize access to scientific information, making it freely available to researchers, students, and curious minds across the globe.

What is Open Access?

Open Access (OA) refers to the practice of providing unrestricted access via the Internet to peer-reviewed scholarly research. OA content is available to all, without the usual financial or legal barriers. We believe that open access is crucial in fostering a culture of knowledge sharing and collaboration, thereby accelerating innovation and discovery.

Types of Open Access:

• Gold Open Access: Papers are published in open access journals that provide immediate open access to all of their articles.
• Green Open Access (Self-Archiving): Authors publish in any journal and then self-archive a version of the article for free public use in their institutional repository or on a website.
• Hybrid Open Access: Some articles in a subscription journal are made open access upon the payment of an additional charge.

Downloading Resources

• Direct Downloads: Once you find a paper or dataset, download it directly.
• Citation Tools: Easily export citations in various formats to incorporate them into your research.

Open Access

Open access in scientific publishing represents a transformative approach that breaks down traditional barriers to knowledge dissemination. It is a movement dedicated to making scientific research freely available to all, fostering a more inclusive and collaborative scientific community. At its core, open access allows for the unrestricted sharing of research findings, enabling scientists, academicians, and the general public to access and utilize scientific papers without the constraints of subscription fees or licensing restrictions. This paradigm shift in scholarly communication is driven by the belief that knowledge, particularly that which is publicly funded, should be a communal resource, accessible to everyone for the greater good of society.

In the realm of scientific research, open access has numerous advantages. It accelerates the pace of discovery by allowing researchers to build upon existing work without delay, facilitating interdisciplinary collaboration and cross-pollination of ideas across various fields. This is particularly crucial in addressing global challenges, where rapid and unencumbered access to research can lead to faster solutions. Furthermore, open access democratizes knowledge by making it available to researchers in developing countries who may not have the resources for expensive journal subscriptions, thereby narrowing the research gap between high and low-income countries.

The open access model also aligns with the digital age's ethos of openness and transparency. It enables a more efficient validation and critique process, as a larger audience can scrutinize and contribute to the research. This can lead to higher quality and more reliable scientific work. Moreover, it provides an equal platform for emerging researchers and institutions to share their findings, ensuring that the visibility and impact of research are not confined to those within well-funded, prestigious entities.

However, the transition to open access is not without challenges. The sustainability of publishing models, quality assurance, and equitable distribution of costs are ongoing concerns. Despite these hurdles, the open access movement is gaining momentum, driven by the global scientific community's commitment to an open, accessible, and collaborative future in research. As we move forward, open access stands as a beacon of progress, symbolizing a world where knowledge is a shared and freely accessible asset, driving innovation and societal advancement.

Best Websites To Download Research Papers For Free: Beyond Sci-Hub

Navigating the vast ocean of academic research can be daunting, especially when you’re on a quest for specific research papers without the constraints of paywalls. Fortunately, the digital age has ushered in an era of accessible knowledge, with various platforms offering free downloads of scholarly articles.

In this article, we explore some of the best websites that provide researchers, students, and academicians with free access to a plethora of research papers across diverse fields, ensuring that knowledge remains within everyone’s reach.

Best Websites To Download Research Papers For Free

Google Scholar

As a researcher, you might find Google Scholar to be a repository brimming with academic papers covering a broad span of domains like social sciences, computer science, and humanity, including:

• Journal articles
• Conference papers, and

Unlike other websites to download research papers, Google Scholar provides free access to a vast collection of scholarly literature, making it one of the best websites to download research.

Not every article is available in full PDF format directly; however, Google Scholar often links to other open access resources like DOAJ (Directory of Open Access Journals) and open-access repositories where you can directly download papers.

For instance, if you’re searching for a specific 2023 research paper in mathematics, you can use Google Scholar to locate the paper and check if it’s available for free download either on the platform itself or through links to various open access sources.

In many cases, Google Scholar integrates with tools like Unpaywall and Open Access Button, which are browser extensions that help you find free versions of paywalled articles.

These extensions often redirect you to open-access content, including those on platforms like Sci-Hub and Library Genesis, although it’s crucial to be aware of the legal and ethical implications of using such services.

ResearchGate

ResearchGate is a unique platform that blends social networking with academic research, making it an essential tool for researchers and scientists across various disciplines.

Here, you have access to a digital library of millions of research papers, spanning fields from computer science to social sciences and beyond.

When you’re on ResearchGate, downloading a research paper is relatively straightforward, especially if it’s open access. Many researchers upload the full PDF of their work, providing free access to their peer-reviewed articles.

If the research paper you’re interested in isn’t available for direct download, ResearchGate offers a unique feature: you can request a copy directly from the author.

This approach not only gets you the paper but also potentially opens a line of communication with leading experts in your field.

It’s important to note that ResearchGate isn’t just a repository; it’s a platform for discovery and connection. You can:

• Follow specific researchers
• Join discussions, and
• Receive notifications about new research in your domain.

While it doesn’t have the controversial direct download links like Sci-Hub or Library Genesis, ResearchGate offers a more ethical and legal route to accessing academic papers. 

ScienceOpen

ScienceOpen is a comprehensive repository that hosts a multitude of open-access research articles across various fields, from the social sciences to computer science. 

The process of downloading a research paper on ScienceOpen is remarkably straightforward. Since it’s an open-access platform, most of the papers are available to download as PDFs without any cost.

This means you can access high-quality, peer-reviewed academic research without encountering paywalls that are often a barrier in many other scientific platforms.

For instance, if you’re delving into the latest 2023 scientific papers in mathematics, ScienceOpen can be your go-to source. You can easily search for research papers using:

• Browsing through various open access journals featured on the site.

The direct download feature simplifies access to these papers, making it convenient for you to obtain the research you need.

Directory of Open Access Journals (DOAJ)

The Directory of Open Access Journals (DOAJ) is a digital library is an extensive repository of open-access, peer-reviewed journals, covering a wide array of subjects from humanities to nuclear science.

When you’re navigating DOAJ, you’ll discover that it’s not just a platform to download research papers; it’s a gateway to a world of academic research.

Each journal article listed is freely accessible, meaning you can download these scholarly articles without any cost or subscription.

The process is simple: search for research papers using specific keywords, subjects, or even DOAJ’s advanced search functionality that includes filters like:

• Language, or
• The year of publication.

For example, if you’re delving into the latest developments in scientific research in 2023, DOAJ allows you to refine your search to the most recent publications.

Once you find a relevant research paper, you can easily access the full text in PDF format through a direct download link. This is particularly useful for accessing high-quality, open-access research papers that are not always readily available on other platforms like Sci-Hub or Library Genesis.

PubMed hosts millions of research articles, primarily in the fields of medicine and life sciences, but also encompassing a broad range of scientific research.

When you’re on PubMed, you can search for research papers using:

• Authors, or
• Specific journal names.

While PubMed lists both open-access and subscription-based journal articles, it offers a unique feature for accessing papers for free.

If you’re looking for a particular research paper, say in the domain of computer science or social sciences from 2023, you can directly access its abstract on PubMed. For open access articles, a free full-text link is often available, allowing you to download the research paper in PDF format.

PubMed integrates with tools like Unpaywall and the Open Access Button. These browser extensions help you find open-access versions of the articles you’re interested in, bypassing the paywalls that often restrict access to scholarly literature.

While PubMed itself doesn’t provide direct download links for all articles, its connection with these tools and various open access repositories ensures that you, as a researcher, have greater access to scientific papers.

Sci-Hub (with Caution)

Sci-Hub, often dubbed the ‘Pirate Bay of Science,’ has been a game-changer in the scientific community since its inception by Alexandra Elbakyan in 2011.

It operates as a controversial, yet widely used platform providing free access to millions of research papers and academic articles that are typically locked behind paywalls.

As a researcher, you might find Sci-Hub an intriguing, albeit contentious, tool for accessing scholarly literature.

When you’re looking to download a research paper from Sci-Hub, the process is relatively straightforward. Say you need a journal article on computer science or a groundbreaking study in social sciences from 2023; you just need to have the DOI (Digital Object Identifier) of the paper.

By entering this DOI into Sci-Hub’s search bar, the website bypasses publisher paywalls, offering you direct download links to PDF versions of the articles.

It’s crucial to note that while Sci-Hub provides access to a vast repository of scientific research, its legality is under constant scrutiny. The platform operates via various proxy links and has been the subject of numerous legal battles with publishers and academic institutions.

Nevertheless, Sci-Hub remains a popular go-to for researchers and scientists globally, especially those without access to university libraries or digital archives.

While it opens doors to a wealth of knowledge, users should be aware of the ethical and legal implications of using such a service in their respective countries.

Wrapping Up: You Can Get Free Academic Papers 

The digital landscape offers a wealth of resources for accessing academic research without financial barriers. The platforms we share here provide an invaluable service to the scholarly community, democratising access to knowledge and fostering intellectual growth.

Whether you’re a seasoned researcher or a curious student, these websites bridge the gap between you and the vast world of academic literature, ensuring that the pursuit of knowledge remains an inclusive and equitable journey for all. Remember to consider the legal and ethical aspects when using these resources.

Dr Andrew Stapleton has a Masters and PhD in Chemistry from the UK and Australia. He has many years of research experience and has worked as a Postdoctoral Fellow and Associate at a number of Universities. Although having secured funding for his own research, he left academia to help others with his YouTube channel all about the inner workings of academia and how to make it work for you.

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Top 11 Websites for Free Research Paper Downloads

For PhD researchers, it’s critical to gather and read research publications that are pertinent to their areas of study. However, downloading a research paper is one of the most challenging chores for any research scholar. To gain access to high-quality research resources, one needs to pay a fee or subscribe to a journal or publication. In this post, We have shown you how to get a research paper for free.

Sci-Hub was originally launched by Alexandra Elbakyan, a Kazakhstani graduate student, in 2011. It is a website known for providing access to various academic articles and papers using educational institution access and its own collection of downloaded articles and papers. In fact, you can download almost 99% of all scientific papers and articles in existence on Sci-Hub.

Many internet service providers (especially in developed countries) have blocked it at present.  Sci-Hub’s own statistics show that the chances of a request for download being successful are 99%. It processes more than 200,000 requests every day.

How to use Sci-Hub?

• Visit https://sci-hub.se/ (Use a VPN to access it if blocked.) You can also checkout Visit: Working Sci-Hub Proxy Links – 2022 ( https://www.ilovephd.com/working-sci-hub-proxy-links-updated/ )
• Enter the full name of the DOI, URL, or URL in the paper that you would like to download.
• Select”Open” or click the “Open” click.

2. Library Genesis

Library Genesis (Libgen) is a file-sharing based shadow library website for scholarly journal articles, academic and general-interest books, images, comics, audiobooks, and magazines. The site enables free access to content that is otherwise paywalled or not digitized elsewhere. This website was threatened with legal action by Elsevier one of the largest publishing companies of technical, scientific medical and scientific research papers in the year 2015.

You can find a research paper or book on Library Genesis by following the steps given below:

• Visit Library Genesis’ official website (libgen.li).
• Type the name of whatever you’re looking for into the search field, and click the “search!” button.
• Click on the name of a book or research paper in the list of results, and choose one of the available mirrors.
• Proceed to download the book or research paper and save it to your device.

3. Z-Library

Z-Library is a clone of Library Genesis, a shadow library project that allows users to share scholarly journal articles, academic texts, and general-interest books via file sharing (some of which are pirated). The majority of its books come from Library Genesis, however, some are posted directly to the site by individuals.

Individuals can also donate to the website’s repository to make literature more widely available. Z-library claims to have more than 10,139,382 Books and 84,837,646 Articles articles as of April 25, 2022.

The steps to download Z-Library books for free are as follows:

Step 1: Go to the Z-Library website ( https://singlelogin.me/ )  and Sign In.

Step 2: Browse through the categories or use the search bar to find the book you want.

Step 3: Click on the book to open it.

Step 4: Click on the download button to download the book.

4. Unpaywall

This is a huge database that contains more than 21 million academic works from over fifty thousand content repositories as well as publishers. The content in the database is replicated from government resources so downloading them is legal. The authors claim they are able to access around 80-85 percent of all scientific papers accessible on their website. 

You can utilize Google’s Chrome extension to quickly get them at any time. 

In order to do this, you have to follow the instructions listed below:

• Visit https://unpaywall.org/products/extension
• Select on the “Add the Chrome” button. Chrome” option.
• Simply click “Add the store to Chrome” in the Chrome Web Store page in addition.
• Keep an eye on the extension until it is installed.
• After installing the extension, it will work automatically and will appear whenever you go to the site of a paywalled research paper in the database of Unpaywall’s open databases. All you have just click on the green Unpaywall button to allow the article to be displayed immediately.

5. 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.”

It can be used to search for and download research papers for free:

• Visit: https://doaj.org/
• Input your keywords in the search field , then hit enter.
• Choose the research paper you wish to download.
• Hit on the “Full Text” button that is located just below the abstract.

6.ScienceOpen

ScienceOpen offers a professional network platform for academics that gives access to more than 40 million research papers from all fields 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. 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.

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• Enter your search terms into the search box. In addition to the keywords, you can look up authors’ collections, journals publishers, as well as others.

OA.mg is a search engine for academic papers. Whether you are looking for a specific paper, or for research from a field, or all of an author’s works – OA.mg is the place to find it. Research papers can be found by using OA.mg by following these steps:

• Follow the link below: https://oa.mg
• You can enter your keywords or DOI number into the search field that is available there.
• Select on the “search” button, and wait for results to show up.
• In the search results Download any research document you require by clicking this link for download.

8.Citationsy Archives

Citationsy Archives allows you to look up journals and papers to download, download them, and (obviously) incorporate them into your work.It is important to note that you can access Citationsy Archives with or without an account. 

All you have to do is make a request, and it will then search for the exact phrase in all research papers around the world and show the pertinent matches to you. Click on each of them to view more information, and then access it directly from the search results. 

The platform also allows you to download the papers using a number of different and totally open access and legal options. 

Use Citationsy Archives from https://citationsy.com/archives/

CORE is the world’s largest aggregator of open access research papers from repositories and journals. It is a not-for-profit service dedicated to the open access mission. They serve the global network of repositories and journals by increasing the discoverability and reuse of open access content.

To find a research article using CORE:

• Visit: https://core.ac.uk/
• Enter your search terms into the search box.
• Hit the “Search” link.
• Select on the “Get PDF” button to download any research document you are looking for.

10. PaperPanda

PaperPanda is a Chrome extension that uses some clever logic and the Panda’s detective skills to find you the research paper PDFs you need. Essentially, when you activate PaperPanda it finds the DOI of the paper from the current page, and then goes and searches for it. It starts by querying various Open Access repositories like OpenAccessButton, OaDoi, SemanticScholar, Core, ArXiV, and the Internet Archive. You can also set your university libraries domain in the settings (this feature is in the works and coming soon). PaperPanda will then automatically search for the paper through your library. You can also set a different custom domain in the settings.

11.Dimensions

Dimensions covers millions of research publications connected by more than 1.6 billion citations, supporting grants, datasets, clinical trials, patents and policy documents. Dimensions is the most comprehensive research grants database which links grants to millions of resulting publications, clinical trials and patents.

Dimensions includes datasets from repositories such as Figshare, Dryad, Zenodo, Pangaea, and many more. It hosts millions of patents with links to other citing patents as well as to publications and supporting grants.

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10 Free Research and Journal Databases

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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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Samsung Researchers Receive Prestigious Best Paper Award at IEEE ICC 2024

Samsung R&D Institute India-Bangalore (SRI-B) is proud to announce that its Network R&D team has received the Best Research Paper Award at the esteemed IEEE International Conference on Communications (ICC) 2024 workshop (BlockSecSDN 2024), held on June 13th, 2024 in Denver, Colorado, USA. This recognition marks a significant milestone as it is the first time the Network R&D team has been honoured at a prestigious conference of IEEE.

The award-winning paper, titled "CSI Feedback Prediction using UE Aware Sparse Neural Network Framework," was authored by an outstanding team of researchers: Dr. Sukhdeep Singh, Swaraj Kumar, Rahul Kumar Saha, Shreyanshu Agarwal, and Ashmeet Kaur. Their innovative research addresses critical challenges in network communications, presenting a novel approach to Channel State Information (CSI) feedback prediction using a User Equipment (UE) aware sparse neural network framework.

“We are incredibly proud of our team for achieving this significant accolade,” said Amit Mannan, VP of Network R&D Team for Samsung R&D Institute India-Bangalore. “This award highlights our commitment to advancing cutting-edge research and innovation in the field of ultra-modern next generation networks and communications. The recognition at IEEE ICC 2024 WS is a testament to the dedication and expertise of our researchers.”

The research presented in the paper proposes a transformative method for improving the accuracy and efficiency of CSI feedback prediction, which is crucial for enhancing the performance of wireless communication systems. The novel framework leverages sparse neural networks to adapt to user equipment conditions, thereby optimizing network resource utilization and improving overall connectivity.

Dr. Sukhdeep Singh, the lead author, expressed his gratitude for the recognition, stating, “Winning the Best Research Paper Award at a Tier 1 IEEE conference WS is a tremendous honor. This achievement reflects the hard work and collaborative spirit of our team. We are excited about the potential impact of our research on the future of network communications.”

Samsung R&D Institute India-Bangalore continues to be at the forefront of technological advancements, driving research and development initiatives that contribute to the global technology ecosystem. The institute remains dedicated to fostering innovation and excellence in various domains, including network communications, to create a smarter and more connected world.

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Design and research of a strain elastic element with a double-layer cross floating beam for strain gauge wireless rotating dynamometers.

1. Introduction

2. design and research of strain elastic element with double-layer cross floating beam, 2.1. structural design of strain gauge wireless rotating dynamometer, 2.2. structural design of the strain elastic element, 2.3. strain and deformation segmented rigid body model of double-layer cross floating beam, 2.3.1. strain and deformation analysis of double-layer cross floating beam under the action of f x, 2.3.2. strain and deformation analysis of double-layer cross floating beam under the action of f z, 2.4. comparison of fea solution and model solution for strain and deformation of double-layer cross floating beam, 2.5. size optimization of double-layer cross floating beam, 2.6. overall analysis of the strain elastic element, 3. strain gauge arrangement and testing, 3.1. strain gauge arrangement, 3.2. static calibration testing, 3.3. free modal testing, 3.4. cutting test, 4. conclusions.

• This paper designed a compact strain elastic element with a double-layer cross floating beam. The maximum outer diameter is only 75 mm and the maximum thickness is 25 mm. The design of the double-layer cross floating beam allows the strain elastic element to improve the sensitivity and reduce the cross-sensitivity error while ensuring the overall stiffness;
• Based on the proposed strain elastic element, a strain gauge wireless rotating dynamometer with compact size is designed. The overall diameter of the dynamometer is 170 mm and the axial size is 286 mm. In order to facilitate integration, a ring-shaped data acquisition and wireless transmission module PCB is designed;
• The static model of the double-layer cross floating beam on the strain elastic element was established by the segmented rigid body method. The rationality of the model was verified by comparison with the finite element results. According to the obtained static model, the structural parameters of the double-layer cross floating beam were optimized using the sequential quadratic programming algorithm to maximize the sensitivity of the floating beam;
• The strain elastic element was analyzed using finite element software, and the strain of the structure under simulation conditions was obtained, which provided a reference for subsequent calibration tests and circuit design;
• Through static calibration tests, the sensitivities of the strain elastic element in the four directions of F X , F Y , F Z , and M Z are determined to be 3.3 mV/N, 2.7 mV/N, 1.6 mV/N, and 104.1 mV/Nm, respectively, and the maximum cross-sensitivity error does not exceed 1%. Through modal tests in the free state, the natural frequency of the strain elastic element is determined to be 2954 Hz. The results of cutting tests show that the strain elastic element can obtain the change in cutting force and the tool-passing frequency. The results show that the designed strain elastic element can be applied to the strain gauge wireless rotating dynamometer to measure four-component cutting forces under medium- and low-speed conditions.

Author Contributions

Data availability statement, conflicts of interest.

• Imad, M.; Hopkins, C.; Hosseini, A.; Yussefian, N.Z.; Kishawy, H.A. Intelligent machining: A review of trends, achievements and current progress. Int. J. Comput. Integr. Manuf. 2022 , 35 , 359–387. [ Google Scholar ] [ CrossRef ]
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Wang, Q.; Wu, W.; Zhao, Y.; Cheng, Y.; Liu, L.; Yan, K. Design and Research of a Strain Elastic Element with a Double-Layer Cross Floating Beam for Strain Gauge Wireless Rotating Dynamometers. Micromachines 2024 , 15 , 857. https://doi.org/10.3390/mi15070857

Wang Q, Wu W, Zhao Y, Cheng Y, Liu L, Yan K. Design and Research of a Strain Elastic Element with a Double-Layer Cross Floating Beam for Strain Gauge Wireless Rotating Dynamometers. Micromachines . 2024; 15(7):857. https://doi.org/10.3390/mi15070857

Wang, Qinan, Wenge Wu, Yongjuan Zhao, Yunping Cheng, Lijuan Liu, and Kaiqiang Yan. 2024. "Design and Research of a Strain Elastic Element with a Double-Layer Cross Floating Beam for Strain Gauge Wireless Rotating Dynamometers" Micromachines 15, no. 7: 857. https://doi.org/10.3390/mi15070857

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power cut —

Researchers upend ai status quo by eliminating matrix multiplication in llms, running ai models without floating point matrix math could mean far less power consumption..

Benj Edwards - Jun 25, 2024 10:27 pm UTC

Researchers claim to have developed a new way to run AI language models more efficiently by eliminating matrix multiplication from the process. This fundamentally redesigns neural network operations that are currently accelerated by GPU chips. The findings, detailed in a recent preprint paper from researchers at the University of California Santa Cruz, UC Davis, LuxiTech, and Soochow University, could have deep implications for the environmental impact and operational costs of AI systems.

Further Reading

Matrix multiplication (often abbreviated to "MatMul") is at the center of most neural network computational tasks today, and GPUs are particularly good at executing the math quickly because they can perform large numbers of multiplication operations in parallel. That ability momentarily made Nvidia the most valuable company in the world last week; the company currently holds an estimated 98 percent market share for data center GPUs, which are commonly used to power AI systems like ChatGPT and Google Gemini .

In the new paper, titled "Scalable MatMul-free Language Modeling," the researchers describe creating a custom 2.7 billion parameter model without using MatMul that features similar performance to conventional large language models (LLMs). They also demonstrate running a 1.3 billion parameter model at 23.8 tokens per second on a GPU that was accelerated by a custom-programmed FPGA chip that uses about 13 watts of power (not counting the GPU's power draw). The implication is that a more efficient FPGA "paves the way for the development of more efficient and hardware-friendly architectures," they write.

The technique has not yet been peer-reviewed, but the researchers—Rui-Jie Zhu, Yu Zhang, Ethan Sifferman, Tyler Sheaves, Yiqiao Wang, Dustin Richmond, Peng Zhou, and Jason Eshraghian—claim that their work challenges the prevailing paradigm that matrix multiplication operations are indispensable for building high-performing language models. They argue that their approach could make large language models more accessible, efficient, and sustainable, particularly for deployment on resource-constrained hardware like smartphones.

Doing away with matrix math

In the paper, the researchers mention BitNet (the so-called "1-bit" transformer technique that made the rounds as a preprint in October) as an important precursor to their work. According to the authors, BitNet demonstrated the viability of using binary and ternary weights in language models, successfully scaling up to 3 billion parameters while maintaining competitive performance.

However, they note that BitNet still relied on matrix multiplications in its self-attention mechanism. Limitations of BitNet served as a motivation for the current study, pushing them to develop a completely "MatMul-free" architecture that could maintain performance while eliminating matrix multiplications even in the attention mechanism.

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How people around the world view same-sex marriage

Attitudes about same-sex marriage vary widely around the world, according to several Pew Research Center surveys fielded in 32 places in the last two years. Among the surveyed publics, support for legal same-sex marriage is highest in Sweden, where 92% of adults favor it, and lowest in Nigeria, where only 2% back it.

In the United States, where the Supreme Court legalized same-sex marriage nationally in 2015, 63% of adults support it and 34% oppose it. But views are highly fractured along political and demographic lines.

For example, Democrats and independents who lean toward the Democratic Party are nearly twice as likely as Republicans and Republican leaners to support same-sex marriage rights (82% vs. 44%). Similarly, nearly three-quarters (73%) of Americans under the age of 40 say they favor allowing gays and lesbians to marry legally – 16 percentage points higher than the share of Americans 40 and older who agree (57%).

Related : In places where same-sex marriages are legal, they account for a small share of all marriages

Below is a closer look at how attitudes about same-sex marriage differ around the world, based on our surveys. This analysis looks at how attitudes vary by geography, demographic factors, political ideology and religion, as well as how views have changed over time.

This Pew Research Center analysis focuses on public opinion of the legality of same-sex marriage in 32 places in North America, Europe, the Middle East, Latin America, Africa and the Asia-Pacific region. This is the first year since 2019 that the Global Attitudes Survey has included publics from Africa and Latin America, which were not included more recently due to the coronavirus outbreak .

For non-U.S. data, this analysis draws from three nationally representative surveys conducted across 31 publics. In 21 publics, we conducted a survey of 24,546 adults from Feb. 20 to May 22, 2023. All interviews were conducted over the phone in Canada, France, Germany, Greece, Italy, the Netherlands, Spain, Sweden and the United Kingdom. Interviews were conducted face-to-face in Hungary, Poland, India, Indonesia, Israel, Kenya, Nigeria, South Africa, Argentina, Brazil and Mexico. In Australia, we used a mixed-mode probability-based online panel.

Data for Hong Kong, Japan, South Korea, Taiwan and Vietnam draws on another survey of 10,390 adults conducted in five Asian publics from June 2 to Sept. 17, 2023. All interviews in Hong Kong, Japan, South Korea and Taiwan were conducted over the phone. Interviews were conducted face-to-face in Vietnam.

Data for Cambodia, Malaysia, Singapore, Sri Lanka and Thailand draws on a third survey of 10,551 adults conducted in five South and Southeast Asian publics from June 1 to Sept. 4, 2022. All interviews in Malaysia and Singapore were conducted over the phone. Interviews were conducted face-to-face in Cambodia, Sri Lanka and Thailand. Both the survey in East Asia and the one in South and Southeast Asia are part of the  Pew-Templeton Global Religious Futures project , which analyzes religious change and its impact on societies around the world.

In the United States, we surveyed 3,576 U.S. adults from March 20 to 26, 2023. Everyone who took part in this survey is a member of the Center’s American Trends Panel (ATP), an online survey panel that is recruited through national, random sampling of residential addresses. This way nearly all U.S. adults have a chance of selection. Read more about the ATP’s methodology .

Respondents for all surveys were selected using probability-based sample designs. In Thailand, we conducted additional interviews in the Southern region, which has larger shares who are Muslim. The data in all publics is weighted to account for different probabilities of selection among respondents and to align with demographic benchmarks for adult populations.

This post is an update of one published June 13, 2023. This new post includes more publics surveyed. It also uses a different rounding procedure to generate the “total” figures, so results may differ slightly from previously published estimates. The accompanying topline figures are unchanged.

Here are the questions used for the analysis , along with responses, and the survey methodology .

How attitudes about same-sex marriage vary geographically

People in Western Europe stand out as staunch supporters of same-sex marriage. At least eight-in-ten adults support it in Sweden (92%), the Netherlands (89%), Spain (87%), France (82%) and Germany (80%). In each of these places, the practice is legal .

In Italy, where issues of LGBTQ+ rights have been in the headlines , 73% of adults favor same-sex marriage rights, though it is not legal there.

Around three-quarters (74%) of adults in the United Kingdom also support same-sex marriage. The practice is legal in England, Wales, Scotland and Northern Ireland, although those laws were approved at various times over the past decade.

At the other end of the spectrum in Europe, just 41% of adults in Poland and 31% in Hungary support same-sex marriage. In both places, same-sex marriage is not legal, and LGBTQ+ rights are a political and social flashpoint .

In North America, around eight-in-ten Canadians (79%) support same-sex marriage, as do 63% in both the U.S. and Mexico. Same-sex marriage is legal in all three places.

Related : About six-in-ten Americans say legalization of same-sex marriage is good for society

In South America, 67% of Argentines and 52% of Brazilians support the right of gay and lesbian people to marry. Both places have also legalized the practice.

Asia-Pacific

In the Asia-Pacific region, support for same-sex marriage is highest in Australia and Japan. Three-quarters of adults in Australia and nearly seven-in-ten (68%) in Japan favor legal same-sex marriage. But while many Australians who favor same-sex marriage say they strongly support it (52%), support is weaker in Japan , where a 56% majority somewhat favor legal same-sex marriage. Australia has legalized same-sex marriage, but Japan has not .

Views toward legalizing same-sex marriage are similarly favorable in Vietnam, where 65% say they support it.

In India , 53% of adults say same-sex marriage should be legal, while 43% oppose it. The Indian Supreme Court recently rejected a petition to legalize same-sex marriage. (The survey there was conducted prior to the ruling.)

And in Taiwan, roughly equal shares say they support (45%) and oppose (43%) same-sex marriage, with the remainder providing no answer. Taiwan is the only place in Asia where same-sex marriage is legal .

In South Korea, same-sex marriage is not legal, though some lawmakers have proposed changing this . Among South Koreans, 41% favor legal same-sex marriage and 56% oppose it.

Indonesians are highly opposed to same-sex marriage legalization. Roughly nine-in-ten (92%) oppose allowing gays and lesbians to marry, including 88% who say they strongly oppose it. Just 5% of Indonesians support same-sex marriage.

Related : Asian views of same-sex marriage

Africa and Middle East

South Africa remains the only place in Africa where same-sex marriage is legal, having codified it in 2006. Nevertheless, 59% of South Africans oppose the practice.

Nigerians and Kenyans are the least supportive of same-sex marriage rights among the places in Africa surveyed. In Nigeria, where homosexuality is illegal, only 2% of adults say they support allowing gays and lesbians to marry. And in Kenya, just 9% favor it.

In the Middle East, 56% of Israelis are also opposed to making same-sex marriage legal. Religious affiliation and political leanings heavily shape views of same-sex marriage rights in Israel .

How attitudes about same-sex marriage vary by demographic factors

In 21 of the places surveyed, adults under the age of 35 are more likely than their older counterparts to say they favor allowing gays and lesbians to marry legally. And in some places, older adults are less likely to provide a response than younger adults.

The age gap is greatest in Taiwan. Three-quarters of Taiwanese adults under 35 express support for same-sex marriage, compared with roughly a third of those 35 and older.

In 19 of the surveyed places, women are more likely than men to say they support allowing gays and lesbians to marry legally.

For example, in Australia, 83% of women favor it, compared with 67% of men.

There are similar gender differences in Argentina, Cambodia, Germany, Greece, Japan, Poland, South Africa, South Korea, Sri Lanka and Taiwan.

Education and income

In 22 of the surveyed places, people with more education are more likely than those with less education to support allowing gays and lesbians to marry. In some places, those with less education are less likely to provide a response than those with more education.

Similarly, in 10 places, people with incomes over the national average are more likely than those with incomes at or below the median to support same-sex marriage. In one of these places – Poland – those with lower incomes were less likely to provide a response.

How attitudes about same-sex marriage vary by political ideology

Views on same-sex marriage are related to political ideology in 15 of the 18 places where we asked about respondents’ ideology this year. In these places, those on the ideological left are significantly more likely than those on the right to favor allowing gays and lesbians to marry legally.

The ideological difference is greatest in the U.S., where liberals are 54 points more likely than conservatives to support same-sex marriage (90% vs. 36%). Still, in nine surveyed places, majorities of those on both the right and left say they support same-sex marriage.

How attitudes about same-sex marriage vary by religion

Support for legal same-sex marriage tends to be lower in places where more people say religion is somewhat or very important in their lives. Support is higher in places where fewer people consider religion important.

In Nigeria, 99% of adults say religion is at least somewhat important in their lives and only 2% favor legal same-sex marriage. In Indonesia, where 100% of Indonesians say religion is important to them, 5% support legal same-sex marriage. In Sweden, by comparison, just 20% of adults consider religion important to them – and 92% favor allowing gay and lesbian people to wed.

Similarly, people who are not affiliated with a religion are much more likely to say they support same-sex marriage. In Australia, for example, 89% of religiously unaffiliated adults say they favor same-sex marriage, compared with 64% of adults with a religious affiliation.

Together, the most recent surveys show some additional patterns by religion:

• Religiously unaffiliated Americans (85%) – especially atheists (96%) – are the most likely to favor same-sex marriage legality. White, non-Hispanic evangelical Protestants are the least likely religious group to say they favor it (30%). Around two-thirds of U.S. Catholics (65%) favor same-sex marriage, as do 70% of White nonevangelical Protestants.
• In Brazil , Catholics (56%) are more likely than Protestants (32%) to support same-sex marriage.
• In Israel , Jewish adults (41%) are more likely than Muslims (8%) to support same-sex marriage. Among Israeli Jews, 4% of those who are Haredi (“ultra-Orthodox”) or Dati (“religious”) support legal same-sex marriage, compared with 29% of Masorti (“traditional”) Jews. Around three-quarters of Hiloni (“secular”) Jews support this policy.
• In Nigeria , Christians and Muslims are equally likely to oppose same-sex marriage (97% and 98%, respectively).

How attitudes about same-sex marriage have changed over time

It is difficult to directly compare these new survey findings with past surveys on whether people favor or oppose same-sex marriage. Earlier Center surveys focused more on religion and its influence in society, rather than political attitudes and international affairs. And in some places, the mode of the survey (e.g., face-to-face vs. phone vs. web) has changed over time.

However, a comparison with surveys conducted in Latin America in 2013-14 , in Europe in 2015-17 , and the long-term trend in the U.S. generally shows increased public support for the legalization of same-sex marriage over the past decade.

Note: This is an update of a post originally published June 13, 2023. Here are the questions used for the analysis , along with responses, and the survey methodology .

• International Affairs
• LGBTQ Acceptance
• LGBTQ Attitudes & Experiences
• Religion & LGBTQ Acceptance
• Same-Sex Marriage

Sneha Gubbala is a research assistant focusing on global attitudes research at Pew Research Center .

Jacob Poushter is an associate director focusing on global attitudes at Pew Research Center .

Christine Huang is a research associate focusing on global attitudes at Pew Research Center .

NATO Seen Favorably in Member States; Confidence in Zelenskyy Down in Europe, U.S.

In the uk, dissatisfaction with economy, democracy is widespread ahead of election, how israeli society has unified, and divided, in wartime, satisfaction with democracy has declined in recent years in high-income nations, amid war in gaza, 58% of israelis say their country is not respected internationally, most popular.

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The Federalist , commonly referred to as the Federalist Papers, is a series of 85 essays written by Alexander Hamilton, John Jay, and James Madison between October 1787 and May 1788. The essays were published anonymously, under the pen name "Publius," in various New York state newspapers of the time.

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The electronic text of The Federalist used here was compiled for Project Gutenberg by scholars who drew on many available versions of the papers.

One printed edition of the text is The Federalist , edited by Jacob E. Cooke (Middletown, Conn., Wesleyan University Press, 1961). Cooke's introduction provides background information on the printing history of The Federalist; the information provided above comes in part from his work.

This web-friendly presentation of the original text of the Federalist Papers (also known as The Federalist) was obtained from the e-text archives of Project Gutenberg. Any irregularities with regard to grammar, syntax, spelling, or punctuation are as they exist in the original e-text archives.

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Brazil Becomes the Largest Nation to Decriminalize Marijuana

The country’s Supreme Court voted to remove criminal penalties for possession of up to 40 grams of marijuana.

By Jack Nicas and Ana Ionova

Reporting from Rio de Janeiro

Brazil decriminalized marijuana for personal use on Wednesday, making the nation of 203 million the largest to take such a measure and the latest sign of a growing global acceptance of the drug.

Brazil’s Supreme Court ruled that Brazilians could possess up to 40 grams of cannabis — roughly enough for 80 joints — without facing penalties, a decision that would take effect within days and stand for the next 18 months.

The court asked Brazil’s Congress and health authorities to then set the permanent amount of marijuana that citizens could possess. Selling marijuana remains a criminal offense.

Thousands of Brazilians are serving prison sentences for possessing an amount of marijuana below the new threshold, legal analysts said. It is unclear how the decision would affect those convictions.

Many are Black men, who represent 61 percent of drug-trafficking prosecutions but 27 percent of the population. Studies have shown thousands of Black Brazilians have been convicted in situations that have led to lesser or no charges against white people.

Brazil has long taken a harsh criminal approach to drugs, so its decision to effectively allow citizens to smoke marijuana is part of a remarkable shift in public opinion and public policy on the drug over the past two decades. More than 20 countries have now decriminalized or legalized recreational use of marijuana, most in Europe and the Americas.

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