113,763 research outputs found
The factor structure of the PASS cognitive tasks: A reexamination of Naglieri et al. (1991)
No full textGoing 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
Reply to the commentary by Naglieri and Das on the factor structure of a battery of PASS cognitive tasks
No full textExperimental Study of Damage Detection by Data-Driven Subspace Identification and Finite Element Model Updating
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Bethe-Salpeter equation for doubly heavy baryons in the covariant instantaneous approximation
No full textIn the heavy quark limit, a doubly heavy baryon is regarded as composed of a heavy diquark and a light quark. We establish the Bethe-Salpeter equations for the heavy diquarks and the doubly heavy baryons, respectively, to leading order in a 1/mQ expansion. The Bethe-Salpeter equations are solved numerically under the covariant instantaneous approximation with the kernels containing scalar confinement and one-gluon-exchange terms. The masses for the heavy diquarks and the doubly heavy baryons are obtained, and the nonleptonic decay widths for the doubly heavy baryons emitting a pseudoscalar meson are calculated within the model.M.-H. Weng, X.-H. Guo, and A.W. Thoma
A note on the compression theorem for convex surfaces
No full textAbstractSuppose aibici(i=1,2) are two triangles of equal side lengths and lying on spheres Φi with radii r1,r2(r1<r2), respectively. We have proved that there is a continuous map h of a1b1c1 onto a2b2c2 so that for any two points p,q in a1b1c1,|pq|⩾|h(p)h(q)| (Rubinstein and Weng, J. Combin. Optim. 1 (1997) 67–78). In this note we generalize this compression theorem to convex surfaces
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