1,721,026 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
Multi-spectral Imaging and Its Application
No full text中文摘要
大自然中處處都充滿著色彩，而各種彩色影像紀錄、傳輸或重現的儀器在人類生活當中也扮演了舉足輕重的角色；縱使我們知道人眼感知到顏色本身就是一包含釵h因子的複雜行為，然而隨著科技日益進步，所有的人對於色彩描述及其重現的準確度只會有越來越嚴格的要求。為了能夠精確地捕捉和描述出各種物體（或影像）在不同的外在環境之下所呈現的色彩資訊，於是發展出多頻帶影像（Multi-spectral Imaging）的技術，這樣的技術不管是在色彩的擷取、重建、傳輸，甚至是在印刷色域上都提供了很大的進步空間。
這篇論文將對整個多頻帶影像（Multi-spectral Imaging）技術的動機、原理以及國內外相關的研究進度作一完整的介紹。除了實際模擬過去已經被提出的演算法，我們也針對多頻帶影像（Multi-spectral Imaging）相關的主題（例如物體辨識、多頻帶影像壓縮），提出一些想法；藉由驗證這些想法和分析既有的研究結果，最後我們歸結出這個新領域目前可能遇到的瓶頸和未來研究的方向。
整篇論文分成五個章節。第一章對於多頻帶影像（Multi-spectral Imaging）作一般性的介紹。第二章則是介紹顏色、人眼視覺成像、彩色影像儀器的原理概念。第三章內容為過去到現在在多頻帶影像（Multi-spectral Imaging）上的研究整理以及我們實際上的一些模擬結果。接著在第四章當中有我們所嘗試延伸多頻帶影像（Multi-spectral Imaging）相關主題所做的實驗成果。最後，第五章則將整篇文章作一總結與指出未來的研究方向。Abstract
There are plenty of colors in the world and the devices which record, transmit, or re-display color images, have taken important parts in human life. As the development of technology, people desire to gain more accurate colors for image recording and image reconstruction regardless of the exceptional complex behavior of human perception. Thus, there comes the technique of Multi-spectral Imaging, which aims to accurately acquire or describe color information of objects under arbitrary illuminants. It’s this technique that makes great progress in color acquisition, re-display, transmission, and even in printing industry possible.
In this thesis, we have introduced the initial motivation and the principles of Multi-spectral Imaging technique and the researches that have been done by others until now. In addition to simulate the algorithms maintained in the past, we also proposed some ideas about the related research topics, such as object classification and image compression. By verifying these ideas and analyzing the research results on hand, we will draw a conclusion of the possible difficulties that was met now along with the possible future works in this new filed.
This thesis consists of five chapters. A general introduction is made in chapter 1. Then the concept of color, the formation of human vision and the digital image devices are described in chapter 2. In chapter 3, the concept, applications and related works in Multi-spectral Imaging will be summarized and some of our simulated results will be given too. The experiments on multi-spectral imaging, its related topics and their simulation results are present in chapter 4. Finally, a concluding remark and future research directions will be given in chapter 5.Contents
Chapter 1 Introduction 1
Chapter 2 Concepts of Color and Imaging 3
2.1 Introduction 4
2.2 Light and Surfaces 4
2.3 Color Vision 6
2.4 Colorimetry 8
2.4.1 Grassmman’s Laws 9
2.4.2 Color Matching and Color Matching Functions 10
2.4.3 Metamerism 12
2.4.4 Color Difference and Color Spaces 13
2.5 Color Imaging 13
2.5.1 Color Management 14
2.5.2 Digital Image Acquisition 14
2.5.2.1 Colorimetric Characterization of Digital Image Acquisition Device
2.5.3 Digital Image Reproduction 15
2.5.3.1 Colorimetric Characterization of Color Output Device
2.6 Multi-channel Imaging 17
2.7 Conclusion 17
Chapter 3 Related Works in Multi-spectral Imaging 19
3.1 Introduction 19
3.2 Spectral Characterization of the Image Acquisition System 20
3.2.1 Image Acquisition Model 22
3.2.2 Spectral Sensitivity Function Estimation 23
3.2.2.1 Pseudo-inverse (PI) Estimation 24
3.2.2.2 Principal Eigenvector (PE) Method 25
3.3 Spectral Reflectance Estimation from Camera Responses 26
3.3.1 Pseudo-inverse Solution 28
3.3.2 Reconstruction exploiting a prior knowledge of the imaged Objects 28
3.3.3 Principal Component Analysis Method 30
3.3.4 Wiener Estimation 30
3.4 Simulation of Reflectance Reconstruction from Camera Response 31
3.5 Multi-spectral Imaging Application 39
3.6 Conclusion 41
Chapter 4 Experimentation and Related Topics in Multi-spectral Imaging 43
4.1 Introduction 43
4.2 Spectral Analysis 43
4.2.1 Principal Component Analysis 45
4.2.2 Effective Dimensions 46
4.2.3 Simulation Results of Application on Real Reflectance Data Sets 48
4.3 Objects Classification via Spectral Information 53
4.3.1 Classification Procedure 59
4.3.2 Supervised Learning and Bayesian Decision Theory 62
4.3.3 Classification Results 63
4.4 Experimentation on Multi-spectral Image Acquisition 65
4.5 Multi-spectral Image Compression 70
4.5.1 Compression Process 71
4.5.2 Experiment 72
4.5.3 Compression Performance 75
4.5.4 DCT versus PCA Spectral De-correlation 77
4.5.5 Discussion of Multi-spectral Image Compression 83
4.6 Unsupervised Segmentation 87
4.7 Conclusion 90
Chapter 5 Conclusion and Future Works 92
5.1 Conclusion 92
5.2 Future Works 93
Reference 9
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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