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Search engine for natural and physical sciences, social sciences, and humanities. Incorporates arXiv, PubMed, and SciELO. Integrated with ORCID for overlay and peer review services. All articles display Altmetric scores. Free ScienceOpen [135] Scientific Information Database (SID) Engineering, technology, medical science, basic science, human ...
Scipione Amati's History of the Kingdom of Woxu (1615), an example of a secondary source. In scholarship, a secondary source [1] [2] is a document or recording that relates or discusses information originally presented elsewhere. A secondary source contrasts with a primary, or original, source of the information being discussed. A primary ...
Open-source desktop search tool for Unix/Linux GPL [8] Spotlight: macOS: Found in Apple Mac OS X "Tiger" and later OS X releases. Proprietary Strigi: Linux, Unix, Solaris, Mac OS X and Windows: Cross-platform open-source desktop search engine. Unmaintained since 2011-06-02 [9]. LGPL v2 [10] Terrier Search Engine: Linux, Mac OS X, Unix
For example, the Indri search engine provides accurate search for large text collections 'out of the box', and data is stored in an accessible manner to support development of new retrieval strategies. Software from the Lemur Project is distributed under open-source licenses that provide flexibility to scientists and software developers.
A secondary source summarizes one or more primary or secondary sources to provide an overview of current understanding of the topic, to make recommendations, or to combine results of several studies. Examples include literature reviews or systematic reviews found in medical journals, specialist academic or professional books, and medical ...
A result or statement from a reliable secondary source should be included without attribution if it is not disputed by any other recent secondary sources. You should do a search to check that the secondary source you are citing is the most up-to-date assessment of the topic.
For science material, the usual secondary source is a literature review. We like to have both, because secondary sources indicate acceptance by other experts and are more understandable by more readers, while primary ones provide details and are especially useful to university students and experts using Wikipedia.
Robin Li developed the RankDex site-scoring algorithm for search engines results page ranking [23] [24] [25] and received a US patent for the technology. [26] It was the first search engine that used hyperlinks to measure the quality of websites it was indexing, [27] predating the very similar algorithm patent filed by Google two years later in ...