1,720,960 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
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
Uji Fenotipik Deteksi Enzim ESBL, AmpC dan Karbapenemase pada Bakteri Enterobacteriaceae
Full text linkOrganisms that express extended-spectrum β-lactamase (ESBLs) such as Enterobacteriaceae have been increasing for the past forty years. Organisms that express this enzyme can hydrolyze oxyminocephalosporins and monobactam,but can be inhibited using β-lactam inhibitors. There are various types of enzymes that contribute to cephalosporin and monobactam resistances, such as AmpC β-lactamase, and carbapenemase enzymes. Polymerase Chain Reaction (PCR) is an accurate method for detecting ESBL, but this method is a genotypic method that requires a specialized instrument. Therefore there is a need for a phenotypic method to detect ESBL, AmpC and Carbapenemase that can be conducted in various laboratories.
Organisme yang mengekspresikan extended-spectrum β-lactamases (ESBLs) seperti Enterobacteriaceae dilaporkan semakin meningkat selama empat puluh tahun terakhir. Organisme yang meng-ekspresikan enzim ini dapat menghidrolisis oksminosefalosporin dan monobactam, namun dapat dihambat menggunakan β-laktam inhibitor. Terdapat berbagai macam enzim yang berkontribusi dari resistensi sefalosporin dan monobaktam seperti AmpC β-lactamase, dan enzim karbapenemase. Polymerase Chain Reaction (PCR) merupakan metode yang akurat dalam mendeteksi ESBL, tetapi metode ini merupakan metode genotipik yang membutuhkan alat khusus, sehingga masih dibutuhkan metode fenotipik untuk mendeteksi enzim ESBL, AmpC dan Karbapenemase yang dapat dilakukan pada berbagai laboratorium
Mekanisme Resistensi Acinetobacter baumannii terhadap Antibiotik Golongan Karbapenem
Full text linkAcinetobacter baumannii (A. baumanii) merupakan salah satu spesies Acinetobacter tersering diisolasi dari manusia, dan lebih sering dijumpai pada infeksi nosokomial dibandingkan dengan infeksi di komunitas. Eksistensi bakteri ini di lingkungan terkait dengan keragaman reservoir, kemampuan memperoleh gen pembawa sifat resisten antimikroba, dan sifat resisten terhadap pengeringan. Infeksi disebabkan strain A. baumannii yang resisten terhadap banyak antibiotik tidak mudah dikendalikan dan menjadi permasalahan di berbagai negara. Karbapenem merupakan antibiotik utama yang dipakai untuk mengobati pasien infeksi oleh Acinetobacter sehingga menyebabkan peningkatan resistensi bakteri ini terhadap karbapenem. Mekanisme kerja karbapenem yaitu dengan menghambat polimerisasi dan perlekatan peptidoglikan pada dinding sel. Kurangnya penetrasi obat (mutasi porin dan efflux pumps) dan atau carbapenem-hydrolyzing beta-lactamase enzymes seperti OXA carbapenamases dan metalo-beta-laktamase (MBL) memperantarai terjadinya resistensi karbapenem.
Kata Kunci: karbapenem, resistensi antibiotik, Acinetobacter baumanni
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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