321,094 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Jan R. Rienstra
No full textPhotograph shows Jan R. Rienstra, resident of Parrega, Friesland, Netherlands, and the father of George and Dan Rienstra, residents of Nederland, Texas
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
R. Wagstaff
No full text"SX 8284 Wagstaff R. Darwin service 2'14 Aust Field Reg July 1941 - Jan 1943".SX 8284 Wagstaff R. Darwin service 2'14 Australian Field Regiment July 1941 - January 1943
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[Letter from Jan K. Muhlert to D. Jack Davis and R. William McCarter, April 7, 1988]
No full textA letter from Jan K. Muhlert, director of the Amon Carter Museum, to D. Jack Davis and R. William McCarter, co-directors of the project. The letter addresses the continued support of the Amon Carter towards the North Texas Regional Institute for Educators on the Visual Arts
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Combining Optimality Theory and a Cognitive Architecture
No full textOptimality Theory (OT) has had a lot of attention from the linguistics research community but also still largely lacks cognitive grounding. We used the ACT-R cognitive architecture to gain greater insight into the cognitive grounding issues that OT needs to address, most notably the GEN process and the learning of the constraint ranking. A generic ACT-R 5.0 model was developed guided by OT principles. The generic model was instantiated in two specific models, one for syllabification and one for past tense formation. Realistic perception data was used to train the models, both were successful in learning the correct constraint ranking for their domain. This result partly bridges the gap between Optimality Theory and ACT-R, providing OT with a better cognitive grounding and ACT-R with better linguistic capabilities.The definitive version of this paper was published in Proceedings of the Fifth International Conference on Cognitive ModelingMisker, Jan A.V. & Anderson, John R. (2003). Combining Optimality Theory and a Cognitive Architecture. In f. Detje, D. Dorner, H. & Schaub, (Eds.): The logic of cognitive systems: Proceedings of the Fifth International Conference on Cognitive Modeling. Bamberg: Universitäts-Verlag Bamberg.ISBN: 9783933463159 (Published conference proceedings
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[Letter from R. William McCarter to Jan Schronk, May 22, 1992]
No full textA letter from R. William McCarter to Jan Schronk asking Schronk to consider reconfiguring the Hurst-Euless-Bedford Independent School District budget for the next two years to allow additional compensation for an art district coordinator
Letter from R. R. Zellick, Assistant Trust Officer, Anglo California National Bank of San Francisco, to Joseph R. Goodman, October 2, 1942
No full textLetter from R. R. Zellick, Assistant Trust Officer at The Anglo California National Bank of San Francisco, to Joseph R. Goodman, regarding property owned by Dave Tatsuno. Zellick mentions a dispute between current tenants and Tatsuno, and that Tatsuno has asked Goodman to help locate trustworthy tenants.Personal correspondence, organizational records, government documents, publications, and other papers created or collected by Joseph R. Goodman documenting the forced removal and incarceration of Japanese Americans during World War II, as well as organized resistance to incarceration. Included in the collection are records of the Japanese Young Men's Christian Association and the Japanese American Citizens' League in San Francisco, including papers of the Japanese YMCA's executive secretary Lincoln Kanai; Sakai family papers; Goodman's correspondence to and from Japanese American incarcerees, organizations opposing forced removal and incarceration of Japanese Americans, the War Relocation Authority, and others; publications, photographs, and ephemera from the Topaz Relocation Center, where Goodman taught high school; War Relocation Authority records and publications; and newspaper clippings, pamphlets, and reports about forced removal and incarceration created by various government, religious, and civic organizations, in California and nationwide
Jan Olof Rosenqvist, Die byzantinische Literatur. Vom 6. Jahrhundert bis zum Fall Konstantinopels 1453, von Jan Olof Rosenqvist, übersetzt von Jan Olof Rosenqvist und Diether R. Reinsch
No full textJan Olof Rosenqvist, Die byzantinische Literatur. Vom 6. Jahrhundert bis zum Fall Konstantinopels 1453, von Jan Olof Rosenqvist, übersetzt von Jan Olof Rosenqvist und Diether R. Reinsch. In: Revue des études byzantines, tome 66, 2008. p. 337
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