1,721,312 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
Applying SVMs to Predict Earnings Management and Analyze its Determinant Factors
No full text對財務報表使用者而言，企業盈餘為相當重要之資訊。然而，由於許多的因素及動機，管理階層企圖透過某些方法或程序來操縱盈餘。爲強調盈餘管理之重要性，許多文獻試圖找出影響盈餘管理之關鍵性因素。期望藉由考慮這些因素後，能有效預防或避免盈餘管理之發生。 本研究應用支援向量機並根據過去文獻指出之20個影響變數建立預測盈餘管理模型。此外，我們採用特徵選取方式篩選出關鍵性變數。爲驗證支援向量機之預測能力，以邏輯斯迴歸模型為評估預測準確率之標竿。 本研究採用格子點演算法與五摺交互驗證來調整支援向量機的參數，並經由過濾法與混合法執行特徵選取分析2003年至2007年台灣上市（櫃）公司資料。實驗結果顯示，僅投入六個關鍵性變數至支援向量機可獲得最高預測準確率78.05%。此六個變數分別為：績效門檻、股價淨值比、極端盈餘、營運活動現金流量、負債比率與公司規模。逐步迴歸邏輯斯篩選出11個變數僅獲得66.84%預測準確率。Corporate earning is a very important information for financial statements users. However, due to various reasons and motivations, corporate management might attempt to manipulate earning through certain methods or processes. To address the concern of earnings management, many studies have attempted to investigate its determinant factors. It is hoped that by discerning these factors, earnings management can be prevented or detected. Based on the 20 determinant factors found by pervious studies, this research applies support vector machines to build classifiers for earning management prediction. In addition, we adopt a process of features selection to filter out the most important factors. To validate the prediction power of the SVM classifier, we compare its prediction accuracy against that of the logistic regression model. We use the grid search technique with 5-fold cross-validation and perform features selection by filter model and hybrid model to analyze the data of Taiwan’s listed firms during the period of years 2003 to 2007. The experiment results show that a SVM classifier with only 6 determinant factors possess the highest prediction accuracy rate of 78.05%. These six factors are: performancehreshold, market value/book value, extreme earning, cash flow from operations, debt ratio, and corporate size. By comparison, the step-wise logistic model with 11 factors has a prediction accuracy rate of just 66.84%.口試委員審定書 i謝 ii要 iiibstract iv一章 緒論 1一節 研究背景與動機 1二節 研究目的 3三節 研究架構 4二章 文獻探討 5一節 盈餘管理之相關文獻 5二節 支援向量機(Support Vector Machine；SVM) 19三節 特徵選取(Feature Selection) 24三章 研究設計 27一節 期間定義、樣本選取與資料來源 27二節 研究變數定義與衡量 28三節 建立預測模型流程圖 35四章 實驗結果與分析 41一節 敘述性統計 41二節 SVM實驗結果 43三節 邏輯斯迴歸分析(Logistic) 52四節 SVM與Logistic 結果比較 53五章 研究結論與建議 54一節 研究結論 54二節 研究限制 56三節 未來研究建議 56考文獻 5
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
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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