1,721,078 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Age and growth of spring Somber larvae in the northern waters of Taiwan
No full text為瞭解台灣北部海域春季鯖科魚類仔魚的初期成長，本論文(1)利用耳石判定仔魚之日齡及回推孵出日和產卵場、(2)推估鯖魚仔魚之初期生長、(3)以發育之不對稱性評估鯖魚仔魚所經歷的環境在發育過程留下的記錄。自1999年至2001年於海研二號(R/V Ocean Research Ⅱ)拖圓形仔魚網或雙平行之Bongo網，初步鑑定為Scomber者成為本論文之基本材料。總共取得113尾花腹鯖及168尾白腹鯖，其中可供完成耳石製備，並可判讀其日齡之有效樣本花腹鯖為107對，白腹鯖為93對。挑取的耳石為扁平石(sagitta)，經將11個特徵點及各日齡位置座標數位化後，計算其日輪距和Procrustes distance，以及利用生物截距法對應輪寬算出體長，套用Gompertz算出三個成長參數。
本實驗獲得，宜蘭灣及東北海域為花腹鯖及白腹鯖的產卵場，春季產卵期集中在三月和四月份。白腹鯖孵出日較花腹鲭早，在三月已有部分孵出，並延伸至四月，花腹鯖則主要在四月。白腹鯖之稚魚在三月未發現，而花腹鯖之稚魚則在四月出現。經計算兩種仔魚之Procrustes distance以反映其發育上之不對稱性得知，白腹鯖仔魚所面臨的生長環境較花腹鯖不穩定，可能與三月份時之表水溫較低有關。耳石日輪之增長，花腹鯖約為3.5 (um d-1)，而白腹鯖為4.7 (um d-1)。體長對耳石之關係皆可以用直線式加以描述。花腹鯖之體長日成長依階段而分，為0.199-0.620(mm d-1)，而白腹鯖為0.222-0.75(mm d-1)。以套適Gompertz function而得的成長係數來看，花腹鯖四月成長較三月好，白腹鯖三月成長較四月好。且在三月和四月份花腹鯖仔魚出現最適溫較白腹鲭高。花腹鯖為暖水性魚種，白腹鯖為冷水性魚種。2000年三月份在台灣東北海域1220E處，有一鋒面存在，花腹鯖分布在鋒面的右側，無法到達台灣海峽。四月份在彭佳嶼附近有一明顯的冷渦(eddy)，仔魚多集中在此處。並因大陸東海南側的表水溫回升，鋒面減弱，使得花腹鯖可被反流傳送至海峽的區域。白腹鯖則從大陸沿岸南下至台灣海峽產卵和沿著鋒面邊緣南下至台灣東北海域產卵(1220E, 25.50N)。台灣海峽處的仔魚出現頻率最高的溫度皆低於台彎東北海域仔魚的出現頻率最高的溫度，明顯分為兩個產卵區。目 錄.....................................................Ⅰ
摘 要.....................................................Ⅵ
壹、前 言
1. 鯖魚之分類與分布.......................................1
2. 台灣鯖魚漁業概況.......................................2
3. 鯖魚生態...............................................3
4. 前人之研究概況........................................ 3
5. 耳石的研究與應用.......................................4
6. 研究動機與目的.........................................5
貳、材料與方法
1. 仔魚標本...............................................6
2. 仔稚魚發育階段的判定...................................6
3.耳石
3.1 耳石的製備............................................6
3.2 耳石日輪的判讀........................................7
3.3 孵出日與耳石的日增長..................................7
3.4 回推計算 (Back-calculation) ..........................7
3.4.1體長成長曲線.........................................8
3.5 仔魚生長狀況推估
3.5.1 個體成長參數........................................8
3.5.2 個體成長變動之不對稱性..............................8
3.5.3 仔魚出現頻率最高時的水溫............................9
参、結果
1.花腹鯖 (Scomber australasicus) ........................10
1.1體長頻率與孵出日......................................10
1.2耳石的日增長..........................................10
1.3 及齡體長.............................................11
1.3.1 體長對耳石半徑之關係...............................11
1.3.2 體長成長曲線.......................................11
1.4 個體成長參數...................................12
1.4.1 初孵化體長(L0) ....................................12
1.4.2 成長係數(G) .......................................12
1.4.3 成長遞減的速率(C) .................................12
1.5 耳石成長的不對稱性.............................13
1.6仔魚出現頻率最高時的水溫........................13
2.白腹鯖 (Scomber japonicus) ............................13
2.1體長頻率與孵出日......................................13
2.2耳石的日增長..........................................13
2.3 及齡體長.............................................14
2.3.1 體長對耳石半徑之關係...............................14
2.3.2 體長成長曲線.......................................14
2.4 個體成長係數...................................15
2.4.1 初孵化體長(L0) ....................................15
2.4.2 成長係數(G) .......................................15
2.4.3 成長遞減的速率(C) .................................16
2.5 耳石成長的不對稱性.............................16
2.6仔魚出現頻率最高時的水溫........................16
肆、討論
1. 分布..................................................17
2. 耳石型態..............................................18
3. 耳石成長..............................................18
4. 體成長................................................19
5. 花腹鯖與白腹鯖的差異..................................20
5.1體長與孵出日..........................................20
5.2 耳石.................................................20
5.3 成長.................................................21
5.4 暖水性與冷水性魚種...................................21
5.5仔魚出現頻率最高時的水溫與表水溫圖(SST)...............21
5.6 不對稱性..........................................22
伍、參考文獻.............................................24
附表.....................................................33
附圖.....................................................3
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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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