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The main academic full-text databases are open archives or link-resolution services, although others operate under different models such as mirroring or hybrid publishers. . Such services typically provide access to full text and full-text search, but also metadata about items for which no full text is availa
However, there are relatively few databases dedicated to image collection, although some projects such as iNaturalist collect photos as a main part of their data. A special case of "images" are 3-dimensional images such as protein structures or 3D-reconstructions of anatomical structures. Image databases include, among others: [22] Allen Brain ...
Web of Science "is a unifying research tool which enables the user to acquire, analyze, and disseminate database information in a timely manner". [7] This is accomplished because of the creation of a common vocabulary, called ontology , for varied search terms and varied data.
This ranking of results is a key difference of information retrieval searching compared to database searching. [2] Depending on the application the data objects may be, for example, text documents, images, [3] audio, [4] mind maps [5] or videos.
PubMed Central (PMC) is a free digital repository that archives open access full-text scholarly articles that have been published in biomedical and life sciences journals. As one of the major research databases developed by the National Center for Biotechnology Information (NCBI), PubMed Central is more than a document repository.
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Find this article in arXiv, a database of papers in computer science, physics, and mathematics Find this article in the Digital Commons Network, a multidisciplinary collection of scholarly articles Find this article in ScienceOpen, open-access science resources
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