1,721,003 research outputs found
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
선반 공작기계의 에너지 소비 모델 수립 및 저감 전략
Full text link학위논문 (석사)-- 서울대학교 대학원 : 기계항공공학부, 2015. 8. 안성훈.원자재 가격의 상승에 따른 산업체들의 경제적 부담과 이산화탄소 배출 제한을 위한 국제 환경 규약의 활성화로 인해, 생산제조분야에서 에너지 저감 문제는 가장 중요한 국제적 이슈 중 하나로 부상하고 있다. 특히, 공작기계는 전통적인 기계 제조 분야뿐만 아니라 전자 제품 분야에까지 널리 사용되고 있고 이산화탄소 배출에 가장 큰 영향을 미치는 석탄과 천연가스를 원자재로 하는 전기 에너지로 가동되고 있으므로 에너지 효율을 높일 수 있는 기술을 공작기계에 적용하는 것이 필수적이다.
본 연구에서는 공작기계의 기계적 설비를 바꾸지 않으면서도 절삭 공정 변수만을 조절하여 에너지 효율을 높일 수 있는 방법을 연구하였다. 선반 공작기계의 선삭 공정에서 에너지 소비와 제조 비용을 줄일 수 있는 새로운 에너지 모델과 측정 방법론을 제시하였다. 에너지 소비 모델은 기초, 이송축, 주축, 절삭 에너지로 구성되며 각각 절삭 공정 변수로 이루어진 함수로 구체화하였다. 제조 비용 모델은 공작기계의 에너지 소비에 따른 전기 요금과 절삭 공구의 교체 비용으로 구성되며 에너지 소비 모델과 마찬가지로 절삭 공정 변수로 이루어진 함수로 구체화 하였다. 유도된 에너지 소비 모델과 제조 비용 모델은 경험적 접근방법론 (Empirical approach) 을 이용하여 측정된 데이터를 통해 검증하였다. 총 6개 공작기계의 데이터를 측정하였고 해당 모델들은 측정된 데이터와 높은 경향성을 보였다. 또한, 해당 모델을 이용하여 에너지 소비나 제조 비용을 줄일 수 있는 각각의 최적 절삭 공정 변수를 제시하였다. 결론적으로, 설계된 모델을 에너지나 비용 저감을 중점적으로 하는 절삭 공정 계획표에 적용할 수 있다.Owing to the increasing price of energy sources and global environmental regulation such as carbon dioxide emissions, reduction of energy consumption is currently at the top of the global issue in manufacturing industry. Especially, a machine tool uses electricity whose major source is coal or natural gas that contributes largely to the increase of carbon dioxide level. Thus, a machine tool needs to adopt more energy-efficient techniques. This study focuses on controlling cutting parameters without any replacement of hardware components of a machine tool to improve the energy efficiency. The aim of this research is to develop new models and methodologies to reduce the energy consumption and manufacturing costs in turning process on lathe machine tools. The energy consumption model was composed of basic, stage, spindle and machining components, and was clearly described in terms of cutting parameters. Similar to the energy consumption model, the manufacturing cost model was comprised of the energy costs and the tool life, concretized by cutting parameters. This resulting model was verified by empirical approaches using measured data. The constructed model fitted the measured data well on various lathe machine tools. Using the model, two optimum cutting parameters reducing the energy consumption and manufacturing cost were obtained respectively. Therefore, the model is applicable for the working of a process planner based on energy-saving or cost cutting strategies.Chapter 1. Introduction 1
1.1 Background 1
1.2 Decomposition of energy consumption profiles 2
1.3 Set up of an energy consumption equation 5
1.4 Characteristics and limitations of current energy models 6
1.5 Goals of research 10
Chapter 2. Model derivation 11
2.1 Energy consumption model 11
2.1.1 Definition of power consumption 12
2.1.2 Definition of process time 13
2.1.3 General total energy equation 15
2.1.4 Simplified total energy equation 16
2.2 Manufacturing cost model 17
2.3 Specific total cost and optimum parameters 18
Chapter 3. Experimental details 20
3.1 Purpose of experiment 20
3.2 Experimental setup 21
3.3 Measurement procedure. 22
Chapter 4. Results and Discussions 24
4.1 Verification by empirical analysis 24
4.2 Model coefficients 28
4.3 Optimum parameters for reducing energy or cost 29
Chapter 5. Conclusion 33
Bibliography 34
초록 38Maste
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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