1,720,956 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
Влијание на организациската култура врз однесувањето на вработените
No full textОрганизацискаОрганизациската култура по дефиниција претставува систем на претпоставки, верувања, вредности и норми на однесување развиени и усвоени од членовите на една организација врз основа на заедничко искуство. Затоа, секоја организација има единствена култура. Создавањето на организацискаорганизациската култура е низ процесите на решавање на проблемите при адаптација на организацијата кон надворешната околина и со внатрешната интеграција на вработените. Доминантната култура во една организација е онаа чии вредности и норми ги споделуваат сите или поголем дел од вработените, а супкултурата ја составуваат нормите и вредностите на поединците и на помали групи од организацијата. ОрганизацискаОрганизациската култура има големо значење при донесувањето стратегиски одлуки за организацијата, нејзиното влијание е значајно за креирањето на организацискаорганизациската структура, системот на наградување, раководење, управување и контрола на вработените, како и за намалување на конфликтите. Со други зборови, организациската структура во голема мера го креира однесувањето на поединците и/или на групите со поединци членови на организацијата. Користејќи ги резултатите од литературата, како и резултатите од емпириското истражување спроведено во 5 организации од Скопје, овој труд го истражува ефектот на организациската култура врз вработените
Mechanism and dynamics of acyl-CoA mediated protein lysine acylation in mitochondria
Get PDFMitochondrien repräsentieren zelluläre Organellen mit einem hohen Gehalt an acetylierten Proteinen, im Vergleich zu anderen zellulären Kompartimenten. Im Mitochondrium angesiedelte Lysin-Acetyltransferasen sind jedoch nicht bekannt. Hier zeigen wir, dass Acetylierung, ebenso wie andere Acylierungen, spontane Prozesse darstellen, die vom pH-Wert, der Acyl-CoA-Konzentration und dem chemischen Charakter des Acylrestes abhängen. Im Falle eines kurzen Peptidsubstrates, abgeleitet von der Carbamoylphosphat-Synthetase 1, zeigen dicarboxylierte-Acylgruppen den höchsten Grad an Reaktivität. Die Reaktivität der CoA-Thioester nimmt mit Verlängerung der Acylkette ab. Diese Ergebnisse wurden durch Nutzung von Cyclophilin A als Proteinsubstrat bestätigt. Deacylierungsexperimente zeigten, dass SIRT3 eine Lysin-Deacetylaseaktivität besitzt, jedoch nicht in der Lage ist, Succinylgruppen von CypA zu entfernen. SIRT5 stellt hingegen eine effiziente Lysin-Desuccinylase dar. Unter Berücksichtigung der Tatsache, dass wir bislang nicht den überzeugenden Beweis für die Existenz einer mitochondrialen Lysin-Acetyltransferase haben, schlussfolgern wir, dass die Acylierungsvielfalt an Lysinresten wahrscheinlich stark von der enzymatischen Aktivität der Sirtuine und/oder der Verfügbarkeit und Reaktivität bestimmter Acyl-CoA-Thioester abhängt.Mitochondria represent cellular organelles with a high level of acetylated proteins in comparison to other cellular compartments but mitochondrial residential lysine acetyltransferases have not been recognized. Here we show that acetylation, as well as other acylations are spontaneous processes that depend on pH value, acyl-CoA concentration and the chemical nature of the acyl residue. In the case of short peptide substrate derived from carbamoyl phosphate synthetase 1, dicarboxylic acyl groups show highest level of reactivity. Reactivities of the CoA-thioesters decrease with extending the acyl chain. These results were confirmed by using the protein substrate cyclophilin A. Deacylation experiments revealed that SIRT3 exhibits deacetylase activity but is not able to remove any of the succinyl group from cyclophilinA, whereas SIRT5 is an efficient protein desuccinylase. Considering that we have not found convincing evidence about existence of mitochondrial lysine acetyltransferase so far, it leads to conclusion that acylation landscape on the lysine residues might largely depend on the enzymatic activities of sirtuins and availability and/or reactivity of certain acyl-CoA thioesters.vorgelegt von Zeljko Simi
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
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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