1,720,955 research outputs found
A REMOTE SENSING APPROACH FOR STRUCTURAL AND LITHOLOGICAL MAPPING IN THE PAMIR MOUNTAINS
No full text此研究对遥感技术和遥感影像在帕米尔高原东南部 Alichur 地区地质测绘的应用前景进行了评估。 Alichur 地区位于塔吉克斯坦东南部的帕米尔地区。从地质学角度来看，它位于帕米尔高原的东南部与西南部的交界地带， 在这里， 西南、 二叠系和侏罗纪沉积序列的前寒武纪变质岩被多个多期深成岩体侵入， 如Bazardara 和 Alichur。由于该地区难以到达，山区的岩性，构造线以及蚀变带的绘图一直是一个难题。 现有地质图中岩性边界和构造细节的准确性有待提高。线性检测和制图是结构地质调查的重要组成部分。它还广泛用于其他不同的研究，包括矿物勘探，水文地质和风险评估。 利用 Landsat、 Sentinel 等具有中、高空间分辨率的光学遥感数据和雷达遥感数据，通过先进的遥感技术将这些数据应用于构造线测绘，具有重要的应用价值。 然而，这些多分辨率数据的结果因空间分辨率和土壤占用敏感性的不同而不同。提取的线条的准确性和质量很大程度上取决于图像的空间分辨率。因此，本研究旨在研究一种适用于具有半干旱和高地特征的研究区域的岩性测绘和线性提取方法。首先，我们测试了 Landsat 8 OLI 数据在帕米尔东南部岩性填图中的潜力。利用 landsat8 OLI 卫星数据和图像增强技术，对研究区岩性单元进行了识别。这些方法包括光谱增强，如独立成分分析（ICA），波段比率和假色成分（FCC）。应用光谱增强技术以提取初始岩性信息，其表明了来自陆源和碳酸盐沉积演替的花岗岩的明显区分。 FCC 图像（OLI 波段 6,7 和 5），色比合成图像（OLI 6/5， OLI（7x5） / 7 和 OLI 6/7），以及独立组件的彩色复合（IC6， IC3，IC4）红色，绿色和蓝色分别被发现为岩性信息对比度更高的组合，并被用作监督分类中的输入数据。最大似然分类对结果图像进行分类。通过现场观察验证的结果表明，可以区分和描绘不同类型的花岗岩类，陆源岩和碳质岩，从而保证地质图的收缩具有更好的准确性。本研究的第二个目的是比较光学 Landsat-8、 Sentinel-2A 和雷达 Sentinel-1A卫星数据，用于自动提取轮廓线。该方法的框架包括结合边缘检测和线性连接算法，确定自动提取线性图像的最优参数，并从研究区适合线性图像映射的光学数据中确定合适的波段。为了验证结果，将提取的线形与人工获取的线形进行对比，通过方向滤波和边缘增强技术，并与研究区现有地质图进行数字化处理后的线形进行对比。此外， 利用数字高程模型(DEM)进行精度评估，并进行了现场验证。结果表明，自动提取的轮廓线、人工解释和已有的轮廓线图之间的相关性最好。实验表明，本研究使用的雷达数据分别从 VH 和 VV 分量中提取 5872 条和 5865 条轮廓线，比 Landsat OLI 和 Sentinel 2A 光学成像提取 2338 条和 4745 条轮廓线更有效地进行结构轮廓线测绘
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
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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