186,277 research outputs found
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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
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
Surface Magnetic Properties of Oxygen on FE(110)
No full textGetzlaff M, Egert D, Rappolt P, et al. Surface Magnetic Properties of Oxygen on FE(110). In: Journal of Magnetism and Magnetic Materials. Journal of Magnetism and Magnetic Materials. Vol 140. ELSEVIER SCIENCE BV; 1995: 727-728.The magnetic properties of a chemisorbate on a ferromagnetic surface are investigated by means of spin polarized metastable deexcitation spectroscopy (SPMDS). The study was carried out with oxygen on magnetized Fe(110) films evaporated on W(110). By using a spin polarized He(2(3)S) beam, an intensity change is observed in the iron related structure near the Fermi edge when reversing the polarization of the incident He beam. This asymmetry changes its sign after oxygen exposure
Non-equilibrium formation of the cubic Pn3m phase in a monoolein/water system
No full textTime-resolved small-angle X-ray diffraction experiments have been carried out to
investigate the transformation from the cubic gyroid Ia3d to the cubic diamond Pn3m phase.
The transition was induced by rapid addition of water to a monoolein/water system changing
the initial water concentration of 26% w/w to excess of water conditions. The transformation
proceeds in two steps: at the beginning, the two cubic mesophases have a strongly differing
lipid/water composition and are accompanied by an intermediate phase. This phase vanishes
as the ratio of cell parameters exceeds 1.50. Thereafter, the transition continues by a direct
nearly isoareal transformation of the cubic minimal surfaces. Lateral area per lipid molecule,
molecular shape and principle curvatures are about the same in this regime
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
Dr. Edward P. Wimberly, ITC, July 2011
No full textThis video is a conversation with Dr. Edward P. Wimberly. Dr. Wimberly talks about his book, "No Shame in Wesley's Gospel: A Twenty-First Century Pastoral Gospel". Brad Ost, AUC Woodruff Library, is the interviewer
Author Rights and Scholarly Publishing
No full textOriginally posted at
http://blog.library.gsu.edu/2014/10/24/author-rights-and-scholarly-publishing/</p
Surface Magnetic properties of Oxygen on Ferromagnetic Films - a Spin-Resolved MDS Study
No full textGetzlaff M, Egert D, Rappolt P, et al. Surface Magnetic properties of Oxygen on Ferromagnetic Films - a Spin-Resolved MDS Study. In: Surface Science. Surface Science. Vol 331-333. ELSEVIER SCIENCE BV; 1995: 1404-1407.Using spin polarized metastable deexcitation spectroscopy (SPMDS) we determine spin asymmetries for remanently magnetized iron(110) and cobalt(0001) films clean and oxygen covered. For clean surfaces a dominance of minority spins is observed at the Fermi edge. At the Fermi edge oxygen exposure leads to a reversal of the dominance of the spin for iron, but not for cobalt, being in agreement with theoretical calculations. An oxygen induced structure at a kinetic energy of 5.5 eV shows a dominance of minority spins, but with different dependence on coverage for iron and cobalt
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