1,721,075 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
強結合を介したプラズモニック化学反応の実証のためのプラットフォーム開発（国際共同研究強化）
Get PDF本研究の目的は、銀ナノ粒子表面で起きる未知の化学反応のメカニズムを検証することにあった。得られた研究成果は (1)4-アミノベンゼンチオール(4-ABT)分子を銀ナノ粒子表面に付着させ可視レーザー光を照射すると通常はアゾ化して二量体の表面増強ラマン散乱(SERS)スペクトルが観測されるが、4-ABT濃度を10＾-8M以下にすると報告例のない新規スペクトルが観測された。 (2)量子化学計算法でSERSスペクトルを再現したところ、この新規スペクトルは化学反応の結果ではなく4-ABT単分子のSERSスペクトルであり、分子の揺らぎに応じて様々なピークが出現していると推測された。研究成果の学術的意義や社会的意義： 4-アミノベンゼンチオール(4-ABT)分子は表面増強ラマン散乱(SERS)研究の分野で既に20年以上研究されてきた重要な分子のひとつである。今回、そのような長い研究の歴史を持つ分子にも拘わらず新たなSERSスペクトルが発見されたため、それ自体に大きな意義がある。またそのSERSスペクトルの由来を計算化学で調べたところ、何かの化学反応の結果ではなく4-ABT分子そのものが由来と推測される結果が得られた。しかも通常、ラマンスペクトルとSERSスペクトルは同一であるが、4-ABT分子では両者が異なっておりこれも新たな発見である。これまでの20年の研究の歴史に新たな風を吹き込むもので非常に意義深い。 ： The purpose of this study was to verify the mechanism of unknown chemicalreactions that occur on the surface of silver nanoparticles. The research results obtained are: (1) When 4-aminobenzenethiol (4-ABT) molecules are attached to the surface of silver nanoparticles and irradiated with visible laser light, they are usually azoized and surface-enhanced Raman scattering (SERS) spectrum of its dimers is observed. However, when the 4-ABT concentration is 10＾-8 M or lower, a new spectrum previously unreported was observed. (2) We reproduced this new SERS spectrum by quantum chemical calculation method. this new spectrum was not the result of the chemical reaction but the SERS spectrum of a single 4-ABT molecule, and various peaks appeared depending on the molecular fluctuation.国際共同研究加速基金（国際共同研究強化）研究期間：2015～2018課題番号：15KK0188研究者番号：00598039研究分野： ラマン分光学、表面増強分光
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Proposal of a new stage grouping of gastric cancer for TNM classification: International Gastric Cancer Association staging project
Get PDFBackground: The current AJCC staging system for gastric cancer (AJCC7) incorporated several major revisions to the previous edition. The T and N categories and the stage groups were newly defined, and adenocarcinoma of the esophagogastric junction (EGJ) was reclassified and staged according to the esophageal system. Studies to validate these changes showed inconsistent results. The International Gastric Cancer Association (IGCA) launched a project to support evidence-based revisions to the next edition of the AJCC staging system. Methods: Clinical and pathological data on patients who underwent curative gastrectomy at 59 institutions in 15 countries between 2000 and 2004 were retrospectively collected. Patients lost to follow-up within 5 years of surgery were excluded. Patients treated with neoadjuvant therapy were excluded. The data were analyzed in total, and separately by region of treatment. Results: Of 25,411 eligible cases, 84.8 % were submitted from 24 institutions of Japan and Korea, 6.4 % from other Asian countries, and 8.8 % from 29 Western institutions. The T and N categories of AJCC7 clearly stratified the patient survival. Patients with pN3a and pN3b showed distinct prognosis in all regions, and by introducing pN3a and pN3b into a cluster analysis, we established a new stage grouping with better stratification than AJCC7, especially among stage III subgroups. Survival of Siewert type 2 and 3 EGJ tumors was better stratified by this IGCA stage grouping than by either esophageal or gastric scheme of AJCC7. Conclusions: For the next revision of AJCC classification, we propose a new stage grouping based on a large, worldwide data collection.
© 2016, The International Gastric Cancer Association and The Japanese Gastric Cancer Association
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