126,266 research outputs found
Personal Papers (MS 80-0002)
No full textLetter from I. H. Kempner to Leslie L. Roos discussing Roos returning to practicing law and his connections with the District Attorney's office in San Francisco
Revue générale des Sciences. — 30 juin. L. Roos et E. Hédon. L’Alcool et sa valeur alimentaire.
No full textRevue générale des Sciences. — 30 juin. L. Roos et E. Hédon. L’Alcool et sa valeur alimentaire.. In: La revue pédagogique, tome 43, Juillet-Décembre 1903. p. 197
Revue générale des Sciences. — 30 juin. L. Roos et E. Hédon. L’Alcool et sa valeur alimentaire.
No full textRevue générale des Sciences. — 30 juin. L. Roos et E. Hédon. L’Alcool et sa valeur alimentaire.. In: La revue pédagogique, tome 43, Juillet-Décembre 1903. p. 197
Joseph Kardinal Höffner, Christliche Gesellschaftslehre. Hrg von L. Roos Kevelaer, 1997
No full textThiel Marie-Jo. Joseph Kardinal Höffner, Christliche Gesellschaftslehre. Hrg von L. Roos Kevelaer, 1997. In: Revue des Sciences Religieuses, tome 74, fascicule 2, 2000. p. 268
Quantum chemical calculations show that the uranium molecule U2 has a quintuple bond
No full textCovalent bonding is commonly described by Lewis's theory(1), with an electron pair shared between two atoms constituting one full bond. Beginning with the valence bond description(2) for the hydrogen molecule, quantum chemists have further explored the fundamental nature of the chemical bond for atoms throughout the periodic table, confirming that most molecules are indeed held together by one electron pair for each bond. But more complex binding may occur when large numbers of atomic orbitals can participate in bond formation. Such behaviour is common with transition metals. When involving heavy actinide elements, metal-metal bonds might prove particularly complicated. To date, evidence for actinide-actinide bonds is restricted to the matrix-isolation(3) of uranium hydrides, including H2U-UH2, and the gas-phase detection(4) and preliminary theoretical study(5) of the uranium molecule, U-2. Here we report quantum chemical calculations on U-2, showing that, although the strength of the U-2 bond is comparable to that of other multiple bonds between transition metals, the bonding pattern is unique. We find that the molecule contains three electron-pair bonds and four one-electron bonds (that is, 10 bonding electrons, corresponding to a quintuple bond), and two ferromagnetically coupled electrons localized on one U atom each-so all known covalent bonding types are contributing
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
Studies on military and foreign policy, political-military gaming
No full textHandwritten on cover "Leslie Roos and Barton Whaley." -- Hand written on t.p., "Leslie Roos." -- Preface lists them as both authors"November 1964.""1528"--handwritten on coverIncludes bibliographical references (p. [48]
Square Dancing with the Stars to Enhance Dynamic Hirschman Linkages?
No full textIn this Presidential Address, the author takes the reader on a reconnaissance of his life and time as a regional scientist. He points out scenery he found scintillating along the way, hoping that some may pick up the banner and chew on a few of the ideas for a while. He suggests a revisit to Albert O. Hirschman’s notion of key sectors and more empirical analysis related to Marcus Berliant’s and Masahisa Fujita’s notion of knowledge creation and transfer.Presidential Address, San Antonio, Texas, March 29, 2014 (53rd Meetings of the Southern Regional Science Association
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
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