1,721,131 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
Temporal Variation of Wet Deposition of Atmospheric Mercury in Metropolitan Taipei
No full text本研究主要探討在2004/10~2005/12期間大台北地區大氣汞濕沉降通量的時序變化。以超純淨鍍鐵弗龍的自動集雨器採集雨水，共採集65個降雨事件，包括颱風、沙塵暴和梅雨。使用冷蒸汽原子螢光法測定雨水中汞金屬總量，部分樣品則測定溶解態、顆粒態以及活性態的汞。總汞濃度範圍1~65 ng/L，權重平均濃度為7±11 ng/L (n = 65)，溶解態、顆粒態以及活性態分別為4±8 ng/L (n = 23)、 3±2 ng/L (n = 30)、0.4±1.4 ng/L (n = 9)，雨水中以溶解態所佔比例最高，達63%。不論一般或是特殊氣象事件之降雨，濃度跟降雨量皆呈現負相關，表示有明顯的清除現象。從總汞濃度與沉降通量的時序變化中，發現有明顯的季節性變化，總汞濃度有冬高 (12±18 ng/L，n =18 )、夏低 (4±2 ng/L，n =22)的趨勢，冬季高值主要原因為東北季風所帶之中國陸源性及污染性物質，夏季濃度較低則因降雨量增加而稀釋減少。沉降通量高值則集中在夏、秋之際，因來自海源的颱風事件在短時內挾帶大量降雨所造成。總汞之濕沉降通量約21.7μg/m2/yr，高於東亞地區其他國家如日本，因本地降雨量較高所致。沙塵暴、梅雨以及颱風等特殊事件所帶來的雨水總汞分別為65 ng/L (n = 1)、2±3 ng/L (n = 20)、8±3 ng/L (n = 6)，以沙塵暴為最高；但其沉降通量所佔總通量比例，颱風便高達40%，梅雨次之為10%，沙塵暴僅佔0.1%。Abstract
Temporal variation of wet deposition flux of mercury (Hg) in metropolitan Taipei, Taiwan was investigated from October 2004 to December 2005. A total of 65 individual events, including typhoon, Asian dust and plum rain events, was collected by automatic Teflon-coated rain collector. Total Hg concentration was measured by Cold Vapor Atomic Fluorescence Spectrophotometry (CVAFS) for all rain samples and dissolve-, particle- and operation-defined reactive-phases Hg were measured in some selected events as well. Total Hg concentration ranged from 1~65 ng/L with a volume-weighted mean of 7±11 ng/L (n = 65). Dissolve-phase Hg averaged 4±8 ng/L (n = 23) about 63% of total Hg while particle-phase and reactive Hg were 3±2 ng/L (n = 30) and 0.4±1.4 ng/L (n = 9), respectively. A negative relationship between total Hg concentration and precipitation amount was observed in all precipitation events, signifying the scavenging of atmospheric particulates and colloids bearing Hg. A significant seasonal variation in total Hg showed the highest concentration in the winter (12±18 ng/L，n =18 ) as result of terrestrial and anthropogenic matters from mainland China during northeast monsoon and lowest in summer (4±2 ng/L，n =22) due to a dilution effect caused by a huge of precipitation. There was additionally a maximum of wet Hg deposition flux the in summer and fall mainly associated with typhoon-induced rainfalls of marine materials. The annual total Hg deposition flux was about 21.7μg/m2 positively correlation with the precipitation amount which was much higher in Japan. The highest concentration was observed in Asian dust event about 65 ng/L (n = 1) relative to those in plum rain (2±3 ng/L, n = 20) and typhoon events (8±3 ng/L , n = 6). Further, typhoon events accounted for 40% of total Hg deposition flux, plum rain for 10% and Asian dust only for 0.1%.第一章 序論 1
1-1 汞的來源與循環 1
1-2 大氣汞的排放 2
1-3 汞之沉降特性 3
1-4 全球大氣汞濕沉降相關研究 3
1-5 台灣之降雨特性 6
1-6 研究動機與目的 7
第二章 採樣及分析方法 8
2-1 採樣方法 8
2-2 前處理 9
2-3 雨水樣品分析 10
2-3-1 藥品與試劑 10
2-3-2 樣品分析 11
2-4 氣象資料 13
第三章 資料品保/品管 (QA/QC) 14
3-1 降雨量之驗證 14
3-2 集雨器之比較 17
3-3 總汞和顆粒態以及溶解態的總和之比較 19
第四章 結果與討論 20
4-1 雨水中汞之濃度分佈 20
4-1-1 總汞 20
4-1-2 溶解、顆粒以及活性態汞 21
4-1-3 各相態汞與總汞之關係 23
4-2 汞沉降通量之時序變化 24
4-2-1 總汞沉降通量之單一降雨事件變化 25
4-2-2 總汞沉降通量之週變化 27
4-2-3 總汞沉降通量之月變化 30
4-2-4 總汞沉降通量之季變化 31
4-2-5 總汞沉降通量之年變化與東亞地區之比較 33
4-3 汞金屬的來源 34
4-3-1 主要來源因子 34
4-3-2 結論 38
第五章 特殊氣象事件 39
5-1 颱風事件 39
5-2 東亞沙塵暴 45
5-2-1 東亞沙塵暴期間之雨水樣品與前後之比較 45
5-3 梅雨 47
5-3-1 梅雨期間之雨水樣品數值比較 47
5-3-2 梅雨期間之特殊性 49
5-4 特殊氣象事件之總結 50
第六章 結論 53
資料來源與參考文獻 55
圖目錄
圖3.1.11 國家海洋科學中心與中央氣象局公館測站相對雨量圖 14
圖3.1.21 歷年平均值與2005年之月平均降雨量月份分佈圖…………………16
圖3.2.11 人工集雨器與自動集雨器之總汞濃度比較圖 17
圖3.2.21 人工集雨器與自動集雨器之活性汞濃度比較圖 18
圖3.3.11 顆粒態及溶解態總和與總汞濃度比較圖 19
圖4.1.11 總汞與每單一事件雨量關係相對圖 20
圖4.1.21 溶解態總汞與雨量關係相對圖 21
圖4.1.31 雨量與顆粒態總汞關係相對圖 22
圖4.1.41 各相態汞比例分佈圖 24
圖4.2.11 單一降雨事件之總汞濃度時序變化圖 25
圖4.2.21 單一降雨事件之總汞沉降通量與降雨量時序變化圖 26
圖4.2.31 單一降雨事件之總汞沉降通量與降雨量關係圖 27
圖4.2.41 每週總汞濃度時序變化圖 28
圖4.2.51 每週總汞沉降通量及降雨量時序變化圖 29
圖4.2.61 每週總汞沉降通量與降雨量之關係圖 29
圖4.2.71 每月總汞沉降通量及降雨量時序變化圖 30
圖4.2.81 各月份總汞沉降通量與降雨量關係圖 31
圖4.2.91 總汞濃度與沉降通量季節時序變化圖 32
圖4.2.10 沉降通量與總汞濃度季節時序變化圖 (排除特殊氣象事件) 32
圖4.2.11 東亞地區總汞年沉降通量與降雨量關係圖 33
圖4.3.11 總汞濃度與海源因子季變化關係圖 35
圖4.3.21 總汞濃度與陸源因子季變化關係圖 36
圖4.3.31 總汞濃度與人為因子季變化關係圖 37
圖5.1.11 納坦颱風之總汞濃度、沉降通量及降雨量時序變化圖 39
圖5.1.21 南瑪都颱風之總汞濃度、沉降通量及降雨量時序變化圖 40
圖5.1.31 海棠颱風之總汞濃度、沉降通量及降雨量時序變化圖 40
圖5.1.41 馬莎颱風之總汞濃度、沉降通量及降雨量時序變化圖 41
圖5.1.51 泰利颱風之總汞濃度、沉降通量及降雨量時序變化圖 41
圖5.1.61 龍王颱風之總汞濃度、沉降通量及降雨量時序變化圖 42
圖5.1.71 颱風事件總汞濃度與降雨量關係圖 44
圖5.1.81 颱風事件總汞沉降通量與降雨量關係圖 44
圖5.2.11 2005年4月份總汞濃度與降雨量相關圖 46
圖5.2.21 2005年4月份總汞沉降通量與降雨量相關圖 47
圖5.3.11 梅雨季節總汞濃度時序變化圖 48
圖5.3.21 梅雨季節總汞沉降通量與降雨量時序變化圖 48
圖5.3.31 梅雨季節總汞濃度與降雨量關係圖 49
圖5.3.41 梅雨季節總汞沉降通量與降雨量關係圖 50
圖5.4.11 各降雨事件沉降通量比例圖 51
圖5.4.21 特殊氣象事件沉降通量與降雨量關係圖 52
表目錄
表1.1.1 各地區大氣汞濕沉降濃度分佈表 4
表1.2.1 各地區大氣汞濕沉降通量分佈表 5
表1.3.1 大臺北地區平均降雨量以及降雨天數 6
表4.1.1 顆粒態汞之所佔比例與北美地區比較表 23
表5.1.1 颱風事件總汞濃度及沉降通量 43
表5.2.1 2005年4月份降雨事件一覽表 45
表5.4.1 特殊氣象事件一覽表 5
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
- …
