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在斜坡多音束側擊的資料分析研究
No full text精確的地形圖是海港工程及海底電纜鋪設工程等必備的重要工具。目前在國內的近岸測深作業仍以單音束測深系統為主流，只要原因是因為其價錢低而且安裝及操作都相當簡單，於施測作業時的船體搖晃程度上的要求也較不如多音束測深系統嚴謹，此種特性雖有利於施測作業的順利進行，但其低效率及低密合性等缺失卻一直無法有效解決。在近岸工程業界者對於水下地形解析度越來越高的要求下，單音束測深的使用已漸不符業者之要求。而多音束測深系統的出現可提供高精度及高解析度的測深資料，故對於多音束測深系統的使用已經成了測深界對於測深系統選擇上的必然趨勢。多音束測深系統對於測深系統的精密度要求大增，且多音束測深系統所得到的水深資料相當龐大，大幅度增加了資料處理上的困難度，故掌控其資料品質需更小心嚴謹。
於近岸區域水深小於5公尺之區域測量水深是相當困難且危險的工作，基於施測作業上的安全性及便利性考量，我們以將音鼓旋轉45°之方式來測量近岸水深。但將音鼓斜置45°之後所測得的水深點往往因為系統偏差校正數值難以估算，因其不似庫底測線可由相鄰不同向之測線等深線來判斷其系統誤差，故往往以庫底的測線資料來判斷近岸資料的系統誤差。本文試著模擬於霧社水庫音鼓側擊時因為音鼓架設產生的系統誤差之邊坡地形，試著釐清個個參數對於地形的影響。摘要...................................................................................... 1
目錄...................................................................................... 3
圖目...................................................................................... 5
表目...................................................................................... 7
第一章 緒論........................................................................ 9
1-1 前言................................................................................ 9
1-2 前人研究....................................................................... 10
1-3 研究目的....................................................................... 12
1-4 多音束測深系統單元介紹......................................... 12
第二章 多音束測深系統誤差與校正............................. 19
2-1 現場疊合測試(Patch Test)............................................ 19
2-2 音鼓正打與側打之成效.............................................. 24
2-2-1 音鼓正打..................................................................... 24
2-2-2 音鼓側打..................................................................... 25
2-3 邊坡側打之誤差型態................................................... 26
第三章 音鼓側打之地形偏差........................................... 36
3-1 橫搖角(roll)偏差............................................................ 37
3-2 縱搖角(pitch)偏差.......................................................... 39
3-2-1 航向與邊坡等深線垂直............................................ 39
3-2-2 航向與邊坡等深線平行............................................ 44
3-2-3 航向與邊坡等深線呈任一角度相交....................... 46
3-3 航偏角(yaw)偏差............................................................. 48
第四章 多音束測深資料於邊坡上之模擬展示............... 53
4-1 橫搖角(roll)偏差之模擬................................................. 55
4-2 縱搖角(pitch)偏差之模擬............................................... 58
4-2-1 航向與邊坡等深線垂直模擬..................................... 58
4-2-2 航向與邊坡等深線平行模擬..................................... 60
4-2-3 航向與邊坡等深線呈角度相交模擬........................ 62
4-3 航偏角(yaw)偏差............................................................. 65
第五章 結論........................................................................... 67
參考文獻............................................................................... 6
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
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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