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Fragment kirjast M. Jacobi'le
Get PDFMurchison, Roderick Impey sir, 1792-1871, briti geoloog, Peterburi TA auliigeFragment kirja lõpust allkirja ja kuupäevag
Kiri Tartu Ülikoolile
Get PDFMurchison, Roderick Impey sir, 1792-1871, briti geoloog, Peterburi TA auliigeTeade geoloogiaalase raamatusaadetise koht
Siluria. A history of the oldest rocks in the British Isles and other countries; with sketches of the origin and distribution of native gold, the general succession of geological formations, and changes of the earth\u27s surface
No full textSiluria. A history of the oldest rocks in the British Isles and other countries; with sketches of the origin and distribution of native gold, the general succession of geological formations, and changes of the earth\u27s surface
No full text[Addresses]
No full textVarious paging.Contents.--Address delivered at the anniversary meeting of the Geological society of London, 1842.--Address delivered at the anniversary meeting of the Geological society of London, 1843.--Address to the Royal geographical society of London, 1844.--Address to the Royal geographical society of London, 1845.--Address delivered at the Southampton meeting of the British association for the advancement of science, 1846.Mode of access: Internet
American Geographical Society of New York Records, 1723-2010, bulk 1854-2000
No full textLetter from Murchison to the Royal Geographical Society, discussing his support of American explorers in the Arctic, including E.K. Kane and I.I. Hayes
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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