1,721,140 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
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
Spatial Panel Model Analysis and Risk Measure Indexes Assessments In Typhoon and flood losses
No full text天然災害發生的頻率低，但是一旦災害發生就會導致巨額的損失與付出龐大的社會成本。台灣地處全球颱風影響地區之一，其多山的地形與豐沛的降雨量更使得台灣成為颱洪泛濫的危險地區。因此，颱洪的損失管理便成為政府與保險公司最重要的問題，使用正確的損失模型與風險測量指標以評價出精確的價格與承擔償債能力是刻不容緩。文分兩部份：第一、空間綜橫模型用於分析台灣23縣市每年的損失。實證顯示空間效果確實存在，其藉由增加空間效果在綜橫模型中，會比以往的計量模型更具有解釋能力。第二、在此颱洪損失模型是用貝氏蒙地卡羅馬可夫鏈的方法，過去大多數的研究都利用對數常態分配建立巨災損失模型，事實上許多學者都指出這些模型都有右偏與厚尾現象，本論文就此提出柏拉圖分配是適切的颱洪損失模型並且計算不同的風險測量指標並透過模擬與數值分析證明“標準尾部誤差”指標與 “變形雙指數”指標是比以往指標更適切。本論文提供政府與保險公司適切的評價管理模型。Natural disasters occur with low frequency but often cause tremendous damage and social loss. Located in the typhoon belt, Taiwan is one of the most hazard prone areas in the world. Its mountainous topography and high rainfall increase its risk of flooding. Hence, managing the risk of typhoons and floods is an important issue for Taiwan’s government and insurance companies. Using the wrong loss models or risk measure indexes to price insurance products could lead to inaccurate pricing and insolvency. his dissertation has two parts. First, a spatial panel model was used to analyze the annual loss of twenty-three cities in Taiwan. The empirical results showed that spatial effect existed. By adding spatial effect into panel model, the model can explain more than the fixed effect panel model and random effect panel model. Second, a loss distribution of typhoons and floods was built by using a Bayesian Monte Carlo Markov Chain method. Although most researchers use Log-Normal distributions to model a catastrophic loss, this is not appropriate because the loss distribution has positive skewness and is heavy-tailed. Recently, McNeil and Frey (2000), Rootzen and Tajvidi (2000), Thuring, Gustafsson and Pritchard (2008), also stated that using Log-Normal distribution to model a characteristic loss is not appropriate. Our results showed that the Pareto distribution is more adaptive for modeling a typhoon and flood’s loss. Finally, we evaluated different risk measure indexes through simulating and numerical analysis. The simulation results demonstrated that “Tail Standard Deviation” and “Dual Power Distortion” are more suitable while considering the tail loss risk. This dissertation aims to provide guidance to insurance companies and governments in assessing and managing typhoon and flood risks.口試委員會審定書 i謝 ii文摘要 iv文摘要 v. Introduction 1.1 Overview of Natural Disaster Risk around the Globe 1.2 The Typhoon and Flood Losses in Taiwan 6.3 Loss Distribution Modeling and Risk Measure Indexes 7. Panel Models of Typhoon and Flood Losses 10.1 Traditional Panel Models 11.2 Test for Model Specification 16.3 Panel Models with Spatial Correlation 19.4 Measuring Spatial Association and Correlation 24. Spatial Panel Model Empirical Results 28.1 Data Description and Hypotheses 29.2 Empirical Results to Traditional Panel Models 33.3 Empirical Results to Spatial Models 36. Typhoon and Flood Losses Distribution 39.1 Typhoon and Flood Losses Distribution Modeling 39.2 Catastrophe Risk Measure Index 41. Empirical Data Analysis and Numerical Results 47. Conclusions 54eferences 55ppendix 6
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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