1,720,953 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
Applying the GWMA Method and VIX Index in Forecasting the Taiwan Stock Price
No full text在時間序列模型上，常使用指數加權移動平均(EWMA)，使各數值的加權影響力隨時間而指數遞減，越近期的數值加權越重，來降低因趨勢出現的結構性變異，使預測模型能得到最佳的預測結果。過去的研究提出廣泛指數加權移動平均(GWMA)的方法，比EWMA多了一個調整參數，在偵測微小變化時更為敏感，在實務的應用上也較EWMA廣泛。因此，本論文利用GWMA的方法並導入波動率指數(VIX)來預測台灣加權股價指數(TAIEX)，並利用數值方法找出GWMA的最佳參數值，來得到最佳的預測模型。
台灣是一個典型的外向型經濟國家，使得台灣股市行情受外部因素影響頗大，這些因素包括國際的經濟、金融、油價與重大國際事件等，長期以來，以美國經濟與利率、匯率政策調整對台灣股市的影響最為明顯。本文結合道瓊工業指數(DJIA)、日經225指數(Nikkei 225)、韓國綜合股價指數(KOSPI)、及香港恆生指數(HSI)等多國股市組合，找出最佳預測加權股價指數的組合，並探討在有無加入波動率指數預測模型之差異。也會運用TAIEX來預測台灣50市占前三名的股票，台積電(TSM)、鴻海(Hon Hai)和中華電(CHT)這些股票的開盤價格。Time series models often use the exponentially weighted moving average (EWMA) method to reduce the influence of prices over time. The weights of recent values are more heavy to reduce structural changes arising from variations in trends, enabling the model to obtain better forecasting results. Over the past few years, researcher had proposed the generally weighted moving average (GWMA) method. The GWMA adds a parameter, is more sensitive to small fluctuation, and has a wider range of practical application than EWMA method. Therefore, this paper uses GWMA method and adds VIX index to predict the TAIEX index. In order to obtain the best forecasting model, we use numerical method to find the best parameter values of GWMA.
Taiwan is a typical export-oriented economy country, it makes Taiwan's stock market affected by external factors. These factors include international economic, financial, oil prices and major international events. For a long time, the impacts of the US economy and interest rate, exchange rate policy on the Taiwan stock market are most obvious. This paper combines the Dow Jones Industrial Average, the Nikkei 225 Index, the Korean Composite Stock Index, and the Hong Kong Hang Seng Index. This study attempts to find the best combination of forecasting model to predict the TAIEX, and compares the results without VIX model to explore differences between two forecasting models. This paper will also use TAIEX to forecast the opening price of Taiwan 50 index's top 3 stocks, TSM, Hon Hai and CHT.目錄
摘要 i
Abstract ii
目錄 iii
表目次 iv
圖目次 v
第一章 緒論 1
1.1研究背景 1
1.2研究目的 1
1.3研究架構 2
第二章 文獻探討 3
2.1波動率指數(VIX) 3
2.2指數加權移動平均(EWMA) 4
2.3廣泛加權移動平均(GWMA) 4
2.4最佳化方法 5
第三章 資料與研究方法 6
3.1資料介紹 6
3.2報酬率 8
3.3 EWMA 方法 9
3.4 GWMA 方法 10
3.5研究步驟 12
第四章 實證結果與分析 16
4.1實證結果-預測TAIEX 16
4.2實證結果-預測台灣股市的前三名 19
4.3檢定結果 22
第五章 結論與建議 24
5.1結論 24
5.2建議 25
參考文獻 26
附錄 2
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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