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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
Variant determination of duz oyun music played in Erzincan and Sivas
Get PDFTez (Yüksek Lisans) -- İstanbul Teknik Üniversitesi, Sosyal Bilimler Enstitüsü, 2018Thesis (M.A.) -- İstanbul Technical University, Institute of Social Sciences, 2018Çalışma öncesi derlenen, Sivas ve Erzincan yörelerine ait, "Düz Oyun"da kullanılan ezgiler, oyununa ait olan on dört ezgi, oluşturulan modele uygun şekilde incelenmiştir. Sonuçlar kısmında ise inceleme sonuçları karşılaştırılarak, Düz oyunda kullanılan ezgilerin karakteristik yapıları belirlenmiştir. Sivas ve Erzincan bölgelerinde oynanan Düz Oyun, daha önce bilimsel olarak araştırılması eksik kalmış konulardan biridir. "Erzincan Ve Sivas'ta Oynanan Düz Oyun Müziğinin Varyantlarının Tespiti" adlı çalışmanın bu konuda yapılacak sonraki çalışmalar için bir başlangıç teşkil olacağını düşünüyoruz.Tunes compiled before study that were used in "Duz Oyun" which belong to Sivas and Erzincan regions were analyzed in compliance with the model built for the fourteen tunes. Under the results section, the findings of the analysis were compared, and the characteristics of the tunes used in Duz oyun were determined. Duz Oyun danced in Sivas and Erzincan regions is one of the subjects which remains incompletely researched scientifically before. The study, "Variant Determination of Duz Oyun Music Played in Erzincan and Sivas" is considered to be an outset for other studies that will be conducted in this subjecYüksek LisansM.A
Weak form efficiency in capital markets: An application on Borsa Istanbul
No full textEtkin piyasalar hipotezi, menkul kıymet fiyatının mevcut ve ulaşılabilir tüm bilgiyi içerdiğini ve fiyatların rassal olarak değiştiğini savunmaktadır. Hipoteze göre geçmiş fiyat hareketlerinden faydalanarak gelecek fiyatlarına yönelik öngörülerde bulunmak mümkün değildir. Hipotezinin geçerliliği yıllarca ulusal ve uluslararası literatürde araştırmacılar tarafından incelenmiştir. çalışmalardan elde edilen bulgular hipotezin geçerliliğinin çalışmaların kapsamına kullanılan yönteme göre farklılık gösterdiğini ortaya koymaktadır. Bu çalışma ile Borsa İstanbul'da (BİST'de) işlem gören, havayolu taşımacılığı ve yer hizmetleri faaliyetinde bulunan 4 şirketin pay fiyatlarının zayıf formda etkin olup olmadıklarını araştırmaktır. Bu amaçla çalışmada söz konusu 4 şirketin pay fiyatlarının etkinliğini test etmek için ekonometrik uygulamada daha güncel bir yöntem olarak kabul edilen Fourier fonksiyonlu FKPSS, FLM, FADF ve FGLS birim kök testleri kullanılmıştır. Çalışmanın sonucuna göre havayolu taşımacılığı ve yer hizmetleri faaliyetinde bulunan CLEBI, PGSUS, TAVHL ve THYAO şirketleri için ortak bir sonuca ulaşılmış olup ilgili pay fiyatlarının serileri, incelenen tüm frekanslarda (günlük, haftalık ve aylık), birim kök taşıdığı, yani durağan olmadığı, havayolu taşımacılığı ve yer hizmetleri faaliyetinde bulunan CLEBI, PGSUS, TAVHL ve THYAO şirketleri için zayıf formda etkin piyasa hipotezinin geçerli olduğu sonucuna ulaşılmıştır. Sonuç olarak piyasada hisse senedi fiyatları geçmiş tüm fiyat bilgilerini içermektedir ve yatırımcılar bu bilgileri kullanarak daha fazla bir kazanç elde edemeyecektir.The efficient markets hypothesis argues that the security price includes all available and accessible information and that prices change randomly. According to the hypothesis, it is not possible to make predictions about future prices by using past price movements. The validity of the hypothesis has been examined by researchers in national and international literature for years. The findings obtained from the studies reveal that the validity of the hypothesis varies depending on the scope of the studies and the method used. This study aims to investigate whether the share prices of 4 companies operating in air transportation and ground handling services, traded in Borsa Istanbul (BIST), are weak form efficient. For this purpose, Fourier function FKPSS, FLM, FADF and FGLS unit root tests, which are considered a more up-to-date method in econometric practice, were used to test the effectiveness of the share prices of the 4 companies in question. According to the results of the study, a common conclusion has been reached for the companies CLEBI, PGSUS, TAVHL and THYAO, which are engaged in air transportation and ground handling activities, and the series of relevant share prices are found to have unit roots, that is, they are not stationary, in all frequencies examined (daily, weekly and monthly). It has been concluded that the weak form efficient market hypothesis is valid for CLEBI, PGSUS, TAVHL and THYAO companies operating in ground handling services. As a result, stock prices in the market include all past price information and investors will not be able to make more profit by using this information
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
Havayolu sektöründe zayıf formda piyasa etkinliğinin analizi: Borsa İstanbul üzerine bir uygulama
No full textThis study examines the weak form efficiency of the sector through the share prices of companies operating in the airline transportation and ground handling services and traded in Borsa Istanbul (BIST) Transportation Index. In this context, the share prices of companies operating in the airline sector such as Çelebi Ground Handling Inc. (CLEBI), Pegasus Air Transportation Inc. (PGSUS), Tav Airports Holding Inc. (TAVHL) and Turkish Airlines Inc. (THYAO) are analyzed with the Fourier function FKPSS, FLM, FADF and FGLS unit root tests, which are accepted as a more up-to-date method in econometric application. The findings of the study reveal that the stock price series of CLEBI, PGSUS, TAVHL and THYAO companies contain a unit root at a significance level of 5% in all frequencies examined (daily, weekly and monthly), in other words, the series are not stationary. This situation shows that the weak form efficient market hypothesis is valid for the companies CLEBI, PGSUS, TAVHL and THYAO operating in airline transportation and ground handling services.Bu çalışma ile Borsa İstanbul (BİST) Ulaştırma Endeksinde işlem gören, havayolu taşımacılığı ve yer hizmetleri faaliyetinde bulunan şirketlerin pay fiyatları üzerinden sektörün zayıf formda etkinliği incelenmektedir. Bu kapsamda havayolu sektöründe faaliyet gösteren Çelebi Hava Servisi A.Ş. (CLEBI), Pegasus Hava Taşımacılığı A.Ş. (PGSUS), Tav Havalimanları Holding A.Ş. (TAVHL) ve Türk Hava Yolları A.O. (THYAO) şirketlerinin pay fiyatları, ekonometrik uygulamada daha güncel bir yöntem olarak kabul edilen Fourier fonksiyonlu FKPSS, FLM, FADF ve FGLS birim kök testleri ile analiz edilmektedir. Çalışmanın bulguları, CLEBI, PGSUS, TAVHL ve THYAO şirketlerinin pay fiyat serilerinin, incelenen tüm frekanslarda (günlük, haftalık ve aylık) %5 anlamlılık düzeyinde birim kök içerdiğini yani durağan olmadığını ortaya koymaktadır. Bu durum havayolu taşımacılığı ve yer hizmetleri faaliyetinde bulunan CLEBI, PGSUS, TAVHL ve THYAO şirketleri için zayıf formda piyasa etkinliğinin geçerli olduğunu göstermektedir
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
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