125,036 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
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
THE TERWILLIGER ALGEBRA OF THE DODECAHEDRON
No full textAbstract. In this paper, we consider the platonic solids as association schemes. All of them are P − and Q−polynomial, except for the dodecahedron, which is not Q−polynomial. We compute explicitely the Terwilliger algebra associated to it, and show it is isomorphic to M6 ( |C) ⊕ M6 ( |C) ⊕ M2 ( |C). We also show that the dodecahedron is a counterexample to a conjecture of Terwilliger. For the definitions below, we follow [T1]-[T4] and [B-I]. A symmetric association scheme of class d is a a pair Y = (X, {Ri} d i=0) consisting of a finite set X and symmetric relations R0, R1,..., Rd on X such that: i) R0 = ∆, the diagonal of X × X
Spin-resolved photoelectron spectroscopy of HBr in the resonance region of electron autoionization
No full textSalzmann M, Böwering N, Klausing H-W, Kuntze R, Heinzmann U. Spin-resolved photoelectron spectroscopy of HBr in the resonance region of electron autoionization. Journal of Physics B: Atomic, Molecular and Optical Physics. 1994;27(10):1981-1992
Contribution de la RMN 2D DAN anisotrope à la détermination du profil isotopique (D/H) i dans des biomarqueurs: étude de la miliacine
No full textInternational audienceRéférences :[1] Ph Lesot, C. Aroulanda, H. Zimmermann, Z. Luz, Chem. Soc. Rev., 44, 2330, (2015).[2] Ph. Lesot, Encyclopedia of Magnetic Resonance (eMagRes), 2(3), 315, (2013).[3] Z. Serhan, I. Billault, A. Borgogno, A. Ferrarini, Ph. Lesot, Chem. Eur. J., 18, 117, (2012).[4] N. Bossard, J. Jacob, C. LeMilbeau, J. Sauze, V.J. Terwilliger, B. Poissonnier, E. Vergès Org. Geochem., 63, 48, (2013).[5] Ph. Berdagué, Ph. Lesot, J. Jacob, V.J. Terwilliger, C. LeMilbeau, Geochemica Cosmo-chimica Acta, soumise, (2015)
Pragmatic Case Studies as a Source of Unity in Applied Psychology
No full textTo unify or not to unify applied psychology: that is the question. In this article we review pendulum swings in the historical efforts to answer this question—from a comprehensive, positivist, “top-down,” deductive yes between the 1930s and the early 60s, to a postmodern no since then. A rationale and proposal for a limited, “bottom-up,” inductive yes in applied psychology is then presented, employing a case-based paradigm that integrates both positivist and postmodern themes and components. This paradigm is labeled “pragmatic psychology” and, its specific use of case studies, the “Pragmatic Case Study Method” (“PCS Method”). We call for the creation of peer-reviewed journal-databases of pragmatic case studies as a foundational source of unifying applied knowledge in our discipline. As one example, the potential of the PCS Method for unifying different angles of theoretical regard is illustrated in an area of applied psychology, psychotherapy, via the case of Mrs. B. The article then turns to the broader historical and epistemological arguments for the unifying nature of the PCS Method in both applied and basic psychology.Peer reviewe
Dr. Edwin Wright Collection: Author Unknown
No full textNotes - The author relates several short stories about his neighbours including Alex McDonell, homesteading and life around Meanook and Athabasca (1 page
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
The Clebsch--Gordan coefficients of and the Terwilliger algebras of Johnson graphs
No full textThe universal enveloping algebra of is
a unital associative algebra over generated by subject to
the relations \begin{align*} [H,E]=2E, \qquad [H,F]=-2F, \qquad [E,F]=H.
\end{align*} The element is called the
Casimir element of . Let denote the comultiplication of
. The universal Hahn algebra is a unital
associative algebra over generated by and the relations
assert that and each of \begin{align*} [C,A]+2A^2+B, \qquad
[B,C]+4BA+2C \end{align*} is central in . Inspired by the
Clebsch--Gordan coefficients of , we discover an algebra
homomorphism that maps \begin{eqnarray*} A &\mapsto & \frac{H\otimes
1-1\otimes H}{4}, \\ B &\mapsto & \frac{\Delta(\Lambda)}{2}, \\ C &\mapsto &
E\otimes F-F\otimes E. \end{eqnarray*} By pulling back via any
-module can be considered as an
-module. For any integer there exists a unique
-dimensional irreducible -module up to
isomorphism. We study the decomposition of the -module for any integers . We link these results to the Terwilliger
algebras of Johnson graphs. We express the dimensions of the Terwilliger
algebras of Johnson graphs in terms of binomial coefficients.Comment: 21 page
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