1,726,164 research outputs found
Generalized ray method for three-dimensional propagation in a penetrable wedge
No full textOpen access funding provided by TU Wien (TUW). The research work reported in this paper was made from 1998 to 2013 by Prof. Yih-Hsing Pao, Prof. Chi-Fang Chen, and Dr. Piotr Borejko; in June, 2013, Prof. Yih-Hsing Pao passed away; from then on the work was continued until 2017 by Prof. Chi-Fang Chen and Dr. Piotr Borejko. The work was funded in 1998-1999 by the National Science Council (currently the Ministry of Science and Technology) of the Republic of China when Dr. Piotr Borejko was employed for two years as a guest researcher and worked closely with Prof. Yih-Hsing Pao and Prof. Chi-Fang Chen at the National Taiwan University (NTU), Taipei, Taiwan, Republic of China. The work was also funded (short visits) in 2009, 2013, 2014, and 2017 by the TU Wien, Vienna, Austria, when Prof. Chi-Fang Chen visited Dr. Piotr Borejko at the TU Wien; in 2005 and 2011 by the NTU when Dr. Piotr Borejko visited Prof. Yih-Hsing Pao and Prof. Chi-Fang Chen at the NTU; and again in 2015 by the NTU when Dr. Piotr Borejko visited Prof. Chi-Fang Chen at the NTU. The authors are pleased to acknowledge a number of improvements suggested by anonymous reviewers
sj-zip-2-smm-10.1177_09622802221122403 - Supplemental material for Bayesian analysis of longitudinal binary responses based on the multivariate probit model: A comparison of five methods
No full textSupplemental material, sj-zip-2-smm-10.1177_09622802221122403 for Bayesian analysis of longitudinal binary responses based on the multivariate probit model: A comparison of five methods by Kaifeng Lu and Fang Chen in Statistical Methods in Medical Research</p
sj-pdf-1-imr-10.1177_03000605221099262 - Supplemental material for Anisocoria and mydriasis after scalp nerve block: a case report
No full textSupplemental material, sj-pdf-1-imr-10.1177_03000605221099262 for Anisocoria and mydriasis after scalp nerve block: a case report by Cheng Xiao, Fang Chen, Yuting Tan, Xiaohang Bao and Sheng Jing in Journal of International Medical Research</p
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe 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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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
New classes of three-dimensional topological crystalline insulators: Nonsymmorphic and magnetic
Full text linkWe theoretically predict two new classes of three-dimensional topological crystalline insulators (TCIs), which have an odd number of unpinned surface Dirac cones protected by crystal symmetries. The first class is protected by a single nonsymmorphic glide plane symmetry; the second class is protected by a composition of a twofold rotation and time-reversal symmetry (a magnetic group symmetry). Both classes of TCIs are characterized by a quantized π-Berry phase associated with surface states and a Z[subscript 2] topological invariant associated with the bulk bands. In the presence of disorder, these TCI surface states are protected against localization by the average crystal symmetries, and exhibit critical conductivity in the universality class of the quantum Hall plateau transition. These new TCIs exist in time-reversal-breaking systems with or without spin-orbital coupling, and their material realizations are discussed.National Science Foundation (U.S.). Center for Integrated Quantum Materials (Grant DMR-1231319)United States. Dept. of Energy. Division of Materials Sciences and Engineering (Award DE-SC0010526
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