1,721,116 research outputs found
Bemerkungen zur Datierung der jungbronzezeitlichen Siedlung an der Walkemühle in Göttingen
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Mittelalterliche Befunde und Funde von der vorgeschichtlichen Siedlungsgrabung an der Walkemühle in Göttingen
No full textJudentaufen im 18. Jahrhundert und der Fall des Schulmeisters Hirsch Marcus in Göttingen 1771
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Prediction of spinodal wavelength in continuously cooled metallic liquid
No full textThe spinodal decomposition of a deeply undercooled metallic liquid Zr(41.2) Ti(13.8)Cu(12.5)Ni(10)Be(22.5) between 800 and 700 K is analysed in the framework of the theory of Cahn and Hilliard for continuous cooling, and the wavelength with maximum amplification is predicted, using as input parameters thermodynamic values gained in experiments. Electron microscopical studies show the microstructure of glass forming alloys Zr(41.2)Ti(13.8)Cu(12.5)Ni(10)Be(22.5). The as-cast material exhibits a two phase mixture of amorphous regions with different compositions. Evidence for spinodal decomposition is given, and the Computed maximum-amplitude wavelength corresponds well with the one found in the experiments. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, WeinheimNational Aeronautics and Space Administration [NCC8-119
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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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