1,721,074 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
Square-wave Voltammetry-Recent Bibliography from Macedonian Authors
Get PDFSquare-wave voltammetry (SWV) is recognized as a key electrochemical technique for getting
insight in important electrode mechanisms, but also in kinetics and thermodynamic aspects
of relevant biological and chemical systems []. It is ubiquitous technique that is widely
explored in physics, chemistry, pharmacy, medicine, and biology. From the features of squarewave voltammograms one gets relevant information about the charge-transfer, adsorption
and mass-transport phenomena taking place at the working electrode surface. Moreover, it
is a very suitable tool for analysing relevant aspects of chemical reactions that are coupled to
the electron transfer steps of electrode reactions []. Such electrochemical systems are quite
pertinent since they mimic important physiological processes []. The voltammetric theories
of such systems, based mainly on the Butler-Volmer formalism, reveal key mechanistic, kinetic
and thermodynamic insights about processes affecting the features of voltammetric outputs.
Estimation of the magnitude of standard rate constant of electron transfer step(s) ks
o
encompasses one of the most important applications of Square-wave voltammetry. The
correlation of ks
o with the difference in energy levels of atomic orbitals of working electrode
and molecular/ionic orbitals of analyzed substrates provides key information about kinetics
of many processes met in electrochemistry of various redox-active systems. For
electrochemical reactions that are associated with chemical reactions, by combining the
Butler-Volmer equation with modified Fick's laws we obtain implicit expressions that link the
magnitude of Faradaic current (I) with the applied potential (E), and with parameters related to the kinetics of relevant processes involved in given electrochemical mechanism. We present in this work recent bibliography about theoretical modelling in Square-wave
voltammetry of two Macedonian Authors-Valentin Mirceski and Rubin Gulaboski. It contains references that are relevant to various surface and diffusional mechanisms that are seen as models for many physiologically active systems
koamabayili/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
Numerical calculation of square-wave voltammograms of a surface catalytic EC' mechanism-MATHCAD working file
Get PDFSurface electrode reactions comprise a large class of substances whose electrochemical transformation at working electrode can take place from adsorbed state. Here we can consider the electrode mechanisms of many lipophilic drugs, azo-dyes, enzymes, coenzyme Q like substances and many more. In this file, we give the readers entire MATHCAD working file to simulate Square-wave voltammograms of so-called Surface Catalytic EC' mechanism in square-wave voltammetry. Theoretical modeling on such systems provides insight into calculating kinetics of many drug-drug and enzyme-substrate interactions
Хибридна Волтаметриска Техника DPSWV применета за теоретски анализи на површинска електрохемиска реакција на која и претходи реверзибилна хемиска реакција (Површински CrevE механизам)
Get PDFНовата пулсна волтаметриска техника што е хибрид помеѓу пулсна волтаметрија и квадратно бранова волтаметрија е применета за теоретска анализа на површинска електрона реакција што е поврзана со претходна хемиска рамнотежа. Овие првични резултати покажуваат нови својства на симулираните волтамограми, што јаправат новата DPSWV техника погодна за анализа на сложени електродни механизми. Покрај тоа што се испитувани влијанијата на константата на ранотежа и констанатата на брзина на хемиската реакција врз волтаметриските одговори, посветено е внимание и на појавата на пост-волтаметриски пикови кај спори електродни реакции. Овие феномени можат да се искористат како дијагностички критериуми за препознавање на вакви сложени електродни механизми. Овој површински електроден механизам е адеекватен модел за опишување на функциите на голем број на редокс ензими и протеини
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