1,721,109 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
Development of a combined heat pump and solar water heater with web-based management
No full text本研究旨在建構結合熱泵與太陽能的熱水系統，熱泵可用來提供陰雨天候下所需的熱能以補傳統太陽能熱水系統的不足。自製熱泵熱水系統的性能係數 (COPhp) 可達3.8，相對於石英電熱管與電湯匙小於1的效能相比，可大幅降低加熱成本。 系統組成包括太陽能熱水系統、熱泵熱水系統、近端控制與遠端監測系統，太陽能熱水系統使用自製集熱器、鼓風機、雙層 PE 膠膜、抽水馬達、保溫水槽及相變材料等。200公升水槽中裝了160公升的水，加入40 kg 相變材料，可提升蓄熱量達68 %。熱泵系統使用壓縮機、蓄壓器、冷凝器、膨脹閥、蒸發器、液氣分離器等；近端監控使用可程式控制器 (PLC)，遠端監測除了使用PLC網路模組之外，亦增加使用可程式化介面控制與網路介面卡 (PICNIC)，兩套硬體透過 LabVIEW 建立使用者介面。 自製的熱水系統結合太陽能與熱泵，加上控制系統的總成本低於3.5萬元，比市售適用於四口之家的太陽能熱水器價格的一半還低。在高油價時代的現在，本研究應具備時代意義。目錄謝 i要 iibstract iii錄 iv目錄 vii目錄 xi一章 前言與研究目的 1-1 前言 1-2 研究目的 2二章 文獻探討 3-1 太陽能熱水系統 3-1-1太陽能熱水系統的類型 3-1-2集熱器蓋板 5-1-3自動調節太陽能熱水循環的控制方法 6-1-3儲水保溫桶結構 9-1-4過濾保護結構 9-1-5雙層充氣式塑膠布溫室 10-1-6相變材料 10-2熱泵熱水系統 12-2-1熱泵熱水器 12-2-2太陽能輔助型熱泵熱水器 14-2-3板式熱交換器 16-2-4用於蒸氣壓縮式空調或冷凍機高壓側之蓄壓及廢熱再利用機構 17-3 網路通訊及控制 18-3-1 無線區域網路 18-3-2 802.11的網路架構 18-3-3 控制及感測器 20三章 材料與方法 24-1 硬體與材料 24-1-1 感測、控制與通訊 24-1-2 太陽能熱水系統 30-1-3 熱泵熱水系統 35-2 軟體 42四章 結果與討論 43-1 置於雙層充氣膠膜隔成的保溫室內的太陽能熱水系統 44-1-1 太陽能集熱器 45-1-2 控制箱 49-1-3 溫度感測器的校正 49-1-3 相變材料 55-1-4 太陽能熱水系統熱能分析 58-1-5 自製太陽熱水系統成本 60-2 熱泵熱水系統組成與測試 61-2-1 有無使用蓄壓器對熱泵性能的影響 62-2-2 抽水馬達流量對熱泵性能的影響 65-2-3 冷凝器熱交換面積大小對熱泵性能的影響 66-2-4 蒸發器熱交換面積大小對熱泵性能系統的影響 68-2-5 管路重整對於熱泵性能的影響 70-2-6 膨脹閥開度對於熱泵系統的影響 73-2-7 三種熱水產生系統的比較 75-2-8 自製熱泵熱水系統成本 77-3 近端監控系統 78-4 無線遠端監測系統 81-5 遠端系統監控軟體人機介面 82-6 近端控制系統的成本 85五章 結論 86六章 建議 87考文獻 89錄一 結合太陽能與熱泵熱水器 PLC控制階梯圖 92目錄2-1 平板型太陽能熱水器 42-2 真空管太陽能熱水器 42-3 多重溫室型的太陽能熱水系統 52-4 自動循環加熱的控制流程示意圖 82-5 保溫桶結構剖示圖 92-6 熱泵熱水器熱循環圖 132-7a 太陽能輔助熱泵熱水器 142-7b 太陽能輔助熱泵熱水器外觀 152-8 太陽能輔助型熱泵熱水器與一般大氣取熱型熱泵熱水器耗電比較圖 152-9 板式熱交換器流場分佈情形 162-10 IEEE 802 規格家族系列與相關的 OSI 架構 192-11 傳統與 PLC 階梯圖接點比較 202-12 類比輸出/入信號擴充模組 212-13 PT-100溫度感測器 232-14 PT-100白金溫度感測器溫度特性 233-1 系統近端監控與遠端監測示意圖 253-2 可程式控制器 263-3 PIC Network Interface Card 273-4 PICNIC輸出入埠編號 273-5 白金溫度感測器的兩線式接線 283-6 多功能無線寬頻IP分享器 293-7 置於保溫室內的太陽能熱水系統示意圖 303-8 鼓風機 313-9 抽水馬達 323-10 自製保溫槽 323-12 封裝好的相變材料 343-13 相變材料在水槽中放置的示意圖 343-14 熱泵熱水系統示意圖 353-15 壓縮機 363-16 儲液器 (蓄壓器 A) 373-17 蓄壓器 (蓄壓器 B) 373-18 液氣分離器 383-19 小盤管熱交換器 393-20 大盤管熱交換器 393-21 板式熱交換器 403-22 具27迴路的蒸發器 403-23 可調式膨脹閥 413-24 R134a 冷媒在冷氣或熱泵循環中的壓力與溫度對照圖 424-1 結合太陽能與熱泵的熱水系統架構示意圖 434-2 置於雙層保溫膜內的太陽能熱水系統外觀 444-3 自製的第一代太陽能熱水系統 454-4 自製的第二代太陽能熱水系統 464-5 自製的第三代太陽能熱水系統 474-6 目前太陽能熱水系統的放置圖 484-7 控制箱 494-8 量測出水口內水溫之 PT-100 感測器的 PLC 讀值與校正溫度值之關係 504-9 量測出水口內水溫之 PT-100 感測器電阻值與校正溫度值之關係 504-10 量測入水口內水溫之 PT-100 感測器的 PLC 讀值與校正溫度值之關係 514-11 量測入水口內水溫之 PT-100 感測器電阻值與校正溫度值之關係 514-12 量測保溫室內氣溫之 PT-100 感測器的 PLC 讀值與校正溫度值之關係 524-13 量測保溫室內氣溫之 PT-100 感測器電阻值與校正溫度值之關係 524-14 量測相變材料之 PT-100 感測器的 PLC 讀值與校正溫度值之關係 534-15 量測相變材料之 PT-100 感測器電阻值與校正溫度值之關係 534-16 量測外部環境氣溫之 PT-100 感測器的 PLC 讀值與校正溫度值之關係 544-18 磷酸氫二鈉在吸熱與放熱過程中的溫度變化 554-19 月桂酸在吸熱與放熱過程中的溫度變化 564-20 160公升水體加入40 kg 相變材料或水的吸熱能力比較 594-21 熱泵熱水系統 614-22 熱泵熱水系統循環示意圖 624-23 有無使用蓄壓器A的系統加溫速率 634-24 有無使用蓄壓器B的系統加溫速率 644-25 不同流量下的加溫速率 654-26 不同冷凝器熱交換面積大小對熱泵 COPhp 值的影響 674-27 使用兩台蒸發器來配管改變熱交換面積 684-28 不同蒸發器熱交換面積對熱泵 COPhp 值的影響 694-29 管路重整前的熱泵系統 704-30 管路重整後的熱泵系統 714-31 管路重整前後的熱泵熱水系統的水溫變化 714-32 不同初始低壓對熱泵 COPhp 值的影響 734-33 不同熱水系統之水溫變化 764-34 不同熱水系統之吸熱量 vs. 耗電量 764-35 不同熱水系統之熱泵 COPhp 值 764-36 PLC控制策略流程圖 804-37 系統連線架構 814-38 PLC 遠端監測系統人機介面 834-39 PICNIC 遠端監測系統人機介面 84目錄2-1 三種蓋板材料性能綜合比較 62-2 相變材料特性分析 112-3 熱泵熱水器與瓦斯熱水器耗能費用之比較 132-4 類比輸出信號擴充模組輸出/輸入碼格式 223-1 熱泵與太陽能熱水系統控制策略 253-2 R134a 冷媒冷氣與熱泵循環中的壓力與飽和溫度 424-1 相變材料熱量變化 (放熱實驗) 574-2 太陽能熱水系統吸放熱實驗 (無相變材料) 584-3 太陽能熱水系統放置於保溫室內吸放熱實驗 (含相變材料) 594-4 有無使用蓄壓器A的熱泵性能 634-5 有無使用蓄壓器B的熱泵性能 644-6 使用不同抽水馬達流量的系統加溫速率 654-7 不同冷凝器熱交換面積對熱泵 COPhp值的影響 674-8 不同蒸發器熱交換面積對熱泵 COPhp值的影響 694-9 管路重整前後的熱泵性能 724-10 不同的初始低壓對熱泵 COPhp值的影響 744-11 不同天候下不同熱泵熱水器 744-12 三種加熱方式的效能比較 754-13 PLC 控制使用的階梯圖符號說明 7
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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