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Horizontal gene transfer ( HGT) refers to the transfer of genes between distant branches on the tree of life. In evolution, it can scramble the information needed to reconstruct the phylogeny of organisms, how they are related to one another. HGT can also help scientists to reconstruct and date the tree of life, as a gene transfer can be used ...
IEEE Access. Journal of Artificial Intelligence Research. Journal of Computational Geometry. Journal of Computer Graphics Techniques. Journal of Formalized Reasoning. Journal of Machine Learning Research. Journal of Object Technology. Journal of Open Source Software. Journal of Statistical Software.
Open access. Open access logo, originally designed by Public Library of Science. A PhD Comics introduction to open access. Open access ( OA) is a set of principles and a range of practices through which nominally copyrightable publications are delivered to readers free of access charges or other barriers. [ 1]
The Great Ordovician Biodiversification Event ( GOBE ), was an evolutionary radiation of animal life throughout [1] the Ordovician period, 40 million years after the Cambrian explosion, [2] whereby the distinctive Cambrian fauna fizzled out to be replaced with a Paleozoic fauna rich in suspension feeder and pelagic animals.
Title page of Lucubrationes, 1541 edition, one of the first books to use a variant of the word encyclopedia in the title. An encyclopedia ( American English) or encyclopaedia ( British English) [ 1] is a reference work or compendium providing summaries of knowledge, either general or special, in a particular field or discipline. [ 2][ 3 ...
DFFITS. In statistics, DFFIT and DFFITS ("difference in fit (s)") are diagnostics meant to show how influential a point is in a linear regression, first proposed in 1980. [ 1] DFFIT is the change in the predicted value for a point, obtained when that point is left out of the regression: where and are the prediction for point i with and without ...
The impact factor ( IF) or journal impact factor ( JIF) of an academic journal is a scientometric index calculated by Clarivate that reflects the yearly mean number of citations of articles published in the last two years in a given journal, as indexed by Clarivate's Web of Science . As a journal-level metric, it is frequently used as a proxy ...
Neither 1953 constitutional declaration, 1956 Egyptian Constitution [ 73] nor the Provisional Constitution of the United Arab Republic [ 74] used the word 'socialist' or 'socialism', but the sole legal parties – the Liberation Rally and the National Union – were socialist. United Arab Republic. 22 February 1958.