1,720,986 research outputs found
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
Neurogranin provides a kinetic proof reading mechanism for decoding Ca<sup>2+ </sup>signals that may govern the induction of synaptic plasticity
No full textkoamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Protein Association Involving Intrinsic Disordered Proteins and Its Regulation on Synaptic Plasticity through Modulating CA2+ Binding
No full textProtein-protein association is essential for biological functions in all living organisms, including synaptic plasticity that relates to learning and memory formation, which involves the regulation of Ca2+ signals. The ubiquitin Ca2+ signaling protein calmodulin (CaM) plays a central role in encoding Ca2+ signals by interacting with a diversity of CaM binding target proteins (CaMBTs). Therefore, the mechanism of how CaM can recognize CaMBTs has aroused a broad and lasting interest. Experimental investigations on binding of CaM and CaMBTs uncover thermodynamic and kinetic properties of protein interactions but they lack molecular details to explain some macroscopic phenomena. Moreover, in many cases it is implausible to determine the molecular mechanisms. Analytical models usually use simplified models but overlook the structural flexibility of the proteins. In this study, firstly I implemented a sequence-based dihedral angle potential for capturing the characteristics of intrinsically disorder unstructured CaMBTs. By applying molecular simulations on association of CaM and CaMBTs, I revealed that molecular recognition requires mutual conformational changes of both CaM and CaMBT. Secondly, among the CaMBTs, CaM-dependent kinase II (CaMKII) and neurogranin (Ng) play an essential role in synaptic plasticity and they are experimentally shown to have opposing effects on Ca2+ affinity for CaM, but the molecular mechanism is unknown. Advancing coarse-grained molecular simulations employing the model, I found that the interaction between Ng peptide and the C-domain of CaM (cCaM) disrupts the intra-molecular interaction between the two Ca2+ binding loops. Next, I performed steered molecular dynamics simulations on atomistic models from several reconstructed coarse-grained structures to compute the changes in Ca2+ affinity for CaM with and without Ng peptide using Jarzynski’s equality. I discovered the molecular underpinnings of lowered affinity of Ca2+ for CaM in the presence of Ng peptide by showing that the N-terminal acidic region of Ng pries open the β-sheet structure between the Ca2+ binding loops at cCaM, enabling Ca2+ release. In contrast, CaMKII increases Ca2+ affinity for cCaM by stabilizing them. This study allows opportunities to connecting the molecular regulations in atomistic detail to the understanding of cellular process cascade of learning and memory formation.Physics, Department o
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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