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  2. Subject indexing - Wikipedia

    en.wikipedia.org/wiki/Subject_indexing

    The process of indexing begins with any analysis of the subject of the document. The indexer must then identify terms which appropriately identify the subject either by extracting words directly from the document or assigning words from a controlled vocabulary. [1] The terms in the index are then presented in a systematic order.

  3. Citation index - Wikipedia

    en.wikipedia.org/wiki/Citation_index

    The first automated citation indexing [1] was done by CiteSeer in 1997 and was patented. [2] Other sources for such data include Google Scholar, Microsoft Academic, Elsevier's Scopus, and the National Institutes of Health's iCite. [3]

  4. Science Citation Index Expanded - Wikipedia

    en.wikipedia.org/wiki/Science_Citation_Index...

    The Science Citation Index Expanded (previously titled Science Citation Index) is a citation index originally produced by the Institute for Scientific Information and created by Eugene Garfield. The Science Citation Index (SCI) was officially launched in 1964, [ 1 ] and later was distributed via CD / DVD . [ 2 ]

  5. Grading systems by country - Wikipedia

    en.wikipedia.org/wiki/Grading_systems_by_country

    This stems from the practice that exams were traditionally given by 3 examiners. Each had to rate the student's examination performance on a 110 scale, and the final grade was the sum of the three ratings. On a 110 scale, passing is 6, so on a 1–30 scale the minimum passing grade is 3*6 = 18.

  6. List of refractive indices - Wikipedia

    en.wikipedia.org/wiki/List_of_refractive_indices

    Download as PDF; Printable version; In other projects ... but these indices often depend strongly upon the frequency of ... [9] [10] Diamond: 589.29: 2.417 [1 ...

  7. List of price index formulas - Wikipedia

    en.wikipedia.org/wiki/List_of_price_index_formulas

    All superlative indices produce similar results and are generally the favored formulas for calculating price indices. [14] A superlative index is defined technically as "an index that is exact for a flexible functional form that can provide a second-order approximation to other twice-differentiable functions around the same point."