1,721,062 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
Improving the mechanical properties of hydrated lime and cement mortars using powdered Bayburt stones and zeolite
No full textFen Bilimleri Enstitüsü, İnşaat Mühendisliği Ana Bilim DalıBu tez çalışması yığma yapılarda kullanılan kireç ve çimento harçlarının daha sağlıklı ve doğru şekilde kullanılabilmesi için kireç ve çimento harçlarının taze ve sertleşmiş özelliklerinin zeolit ve toz haline getirilmiş Bayburt taşlarıyla manipüle edilebilirliği üzerine yapılmış bir çalışmadır. Çalışma kapsamında yığma yapılardaki kireç ve çimento harçlarından kaynaklanan bazı hasarlar ve yapım anında veya sonrasında çimento ve kireç harçlarının bazı dezavantajları ortaya konduktan sonra zeolit ve toz haline getirilmiş Bayburt taşlarıyla harçları manipüle ederek ortaya konan sorunların çözümü aranmıştır. Çalışmada Manisa/Gördes'ten elde edilmiş zeolit ve Bayburt ilinden temin edilen Bayburt Sarı, Bayburt Beyaz, Bayburt Yeşil taşları kullanılmıştır. Bayburt taşlarının puzolanik özellik gösterebilmesi ve zeolit ürünü ile kıyaslanabilmesi için benzer granülometri eğrileri elde edilmiştir. Deney için karışım tasarımı standartlara bağlı kalarak oluşturulmuş ve her ikame malzemesi için %2,5, 5, %10, %20, %30, %40 ve %50 oranlarında katkının yapılması uygun bulunmuştur. Her yüzdelik katkı oranı için 6 küp ve üç kiriş numune dökülmüştür. Çimento harçları için 14. gün, 21. gün ve 28. günlerde kireç harçları için 28. gün, 56. gün ve 91. günlerde basınç ve eğilme dayanımı testi uygulanmıştır. Diğer deneyler harçlar taze halde iken uygulanmıştır. Elde edinilen sonuçlar incelendiğinde kireç ve çimento harçları özelliklerinin zeolit ve toz haline getirilmiş Bayburt taşları ile manipüle edilebilirliği ortaya çıkmıştır ve tezin başında ortaya konan problemlere ışık tutmuştur. Sonuçlara göre zeolite ve Bayburt taşları katkısı ile kirecin harcının basınç dayanımının %60 oranlarına kadar arttığı, su iletme kapasitesinin 4 kat arttığı, su iletme süresinin ise 4 kat azaldığı, priz süresinin %40'lara varan oranlarda iyileştirilebildiği ve kıvamın manipüle edilebilirliği görülmüştür. Zeolite ve Bayburt taşları katkıları ile çimento harcının kontrol numuneye göre basınç dayanımının %65'ler oranında azaldığı, prizlenme süresi ve kıvam değerlerinin ise zeolite ve Bayburt taşları ile manipüle edilebilirliği görülmüştür.This thesis is focusing on the manipulation of fresh and hardened state properties of hydrated lime and cement mortars using powdered Bayburt stones and zeolite for their more compatible and appropriate use in masonry construction. Damages that occur during and after the constructions using cement and hydrated lime mortars are defined and the disadvantages of the using these mortars are noted to investigate whether the required properties of these mortars could be manipulated to remedy the problematic applications of these mortars in masonry construction. In this study, zeolite that obtained from Manisa/ Gördes and Bayburt Yellow, Bayburt White, Bayburt Green stones obtained from Bayburt are used. In order to increase the pozzolanic properties and to be comparable to zeolite, similar particle size distribution for Bayburt stones are obtained to zeolite. Mix design calculations for the experiments were carried out based on the standards the % of 2,5, 5, 10, 20, 30, 40 and 50 replacement levels for both binders found to be suitable. For each replacement level, 6 cube and 3 beam samples were cast. Compressive and flexural strength measurements were done at 14th, 21th and 28th days for cement and at 28th, 56th and 91th days for hydrated lime mortars. All the other experiments were carried out at the fresh state of the mortars. When the results are studied, it was found out that the properties of hydrated lime and cement mortars can be manipulated using powdered Bayburt stones and zeolite and have elucidated the problems stated at the beginning of this thesis. According to the experimental results, the replacement levels of both zeolite and Bayburt stones resulted in %60 increase in strength, 4 times higher increase in transfer sorptivity and therefore 4 times lower decrease in time to dewatering, %40 improvement in setting time and manipulation of consistency is observed. Compressive strength of cement mortars using zeolite and Bayburt stones is decreased by %65 compared to the control cement mortar and was also observed that setting time and consistency could be manipulated when zeolite and Bayburt stones are used
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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