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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
Sapanca Gölü fosfor formlarının ve diğer limnolojik özelliklerinin değişim periyodları üzerine bir araştırma
No full textBu tezin, veri tabanı üzerinden yayınlanma izni bulunmamaktadır
Talasemi major hastalarında apolipoprotein E polimorfizminin sol ventrikül diyastolik disfonksiyonu üzerine olan etkisi
No full textTalasemi major hastalarının çoğunda, kronik ve aşırı demir birikimi nedeni ile hemen hemen tüm organlarda işlev bozuklukları gelişmektedir . Talasemi major hastalarında en sık ölüm nedeni kardiyak komplikasyonlardır. Şelasyon tedavilerinden hastaların çoğu yarar görse de, tedaviye rağmen bazı hastalarda organ yetmezliği gelişmekte ve hastalar ölmektedirler. ApoE izoformlarının beta talasemili major hastalarında sol kalp yetmezliği gelişimi için bir risk faktörü olabileceği görüşü öne sürülmektedir. Türk toplumunda, talasemi major hastalarını, apoE polimorfizmi açısından değerlendiren bir çalışma tespit edilmemiştir. Çalışmamızda, Denizli ilindeki 40 talasemi major hastası ve 40 kontrol bireyinde PCR ve RFLP yöntemleri kullanarak apoE polimorfizm genotiplerini saptadık ve kardiyak fonksiyon bozukluğu ile apoE polimorfizmi arasındaki muhtemel ilişkiyi araştırdık. Çalışmamızda; sol ventrikül diyastolik disfonksiyonu olan talasemi major ve sol ventrikül diyastolik disfonksiyonu olmayan kontrol gruplarında ε4 allel sıklığı sırasıyla %16.7 ve %6.3 olarak saptandı. ε2 alleline, sol ventrikül diyastolik disfonksiyonu olan talasemi major hasta grubunda rastlamadık. Sonuç olarak; talasemi major hastalarında sol ventrikül diyastolik disfonksiyonu gelişimininde apoE polimorfizminin tek başına etkili olmadığı görüşündeyiz. Çalışmamızda kardiyak disfonksiyonu olan hastalarda ε2 allelinin bulunmaması, buna karşılık sağlıklı bireylerde bu allele rastlamış 1 ε2 olmamız, daha önceki çalışmalarda belirtilen allelinin kalp hastalıklarından koruyucu özelliğinin talasemi major hastalarında görülebilen sol kalp yetmezliği gelişiminde de etkili olabileceğinin bir göstergesi olarak yorumlanabilir. ε4 alleline, sol ventrikül diyastolik disfonksiyonu olan talasemi major hastalarında daha sık rastlanmaktadır. ε4 alleli taşıyan sol ventrikül diyastolik disfonksiyonu olan talasemi major hastaları sol kalp yetmezliği gelişimi açısından daha yüksek risk altındadırlar. Bu yüzden, ε4 alleli taşıyan talasemi major hastalarının kardiyak fonksiyonları açısından daha sıkı takip edilmeleri gerektiğini düşünmekteyizSUMMARY In a majority of thalassemia major patients, organ dysfunctions are seen as a result of chronic and excess iron accumulation. Cardiac complications are the major cause of death in patients with thalassemia major. Though most of the patients benefit from the iron chelation therapy, some patients may die because of organ failure. It was proposed that apo E isoforms might be a risk factor in the development of left ventricular dysfunction in patients with beta- thalassemia major patients. To our knowlodge this is the first study evaluating apoE polymorphism in thalassemia major patients in Turkish population. In the present study we detected the apo E polymorphism by PCR- RFLP in 40 thalassemia major patients and 40 control subjects in Denizli. We investigated the possible relationship among apoE polymorphism and cardiac dysfunction in thalassemia major patients. The ε4 allel frequencies in thalassemia major patients with left ventricular diastolic dysfunction and control group without left ventricular diastolic dysfunction were 16.7% and 6.3% respectively. ε2 allel was not detected in any of the thalassemia major patients with left ventricular diastolic dysfunction. As a result; solely apo E polymorphism is not responsible for the development of left ventricular dysfunction in thalassemia major patients. It can be proposed that the detection of ε2 allel in healthy population and lacking in patients with cardiac dysfunction might be an indicator of the 1 importance of ε2 allel in the prevention of left heart failure in thalassemia major patients. ε4 allel is frequent in thalassemia major patients with diastolic dysfunction; thalassemia patients with diastolic dysfunction having ε4 allel are in a higher risk of left heart failure. ε4 allel carrier thalassemia major patients with left ventricular dysfunction should be considered carefully for the cardiac function
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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