1,720,969 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
The study of AlON-based UV light emitter using Printing methods
Get PDFHigh-brightness and deep-ultraviolet (UV) light-sources with emission wavelengths ranging from 230~350 nm (3.54~5.39 eV) have various applications that include water purification, air sterilization, medical and bio-agent detection, skin treatment, white-light illumination, and light sources for high-density optical storage. The purpose of this study is on the synthesis of Aluminum Oxynitride (AlON)-based materials, which emit in the UV region, as well as fabrication of a novel UV light emitter using those AlON materials by printing method.
In the chapter 1, I have explained the importance of UV emitters, the problem of present UV emitters, and the purpose of this study. Moreover, field emission devices and printed electronics that are the basic information of this study have been introduced.
In the chapter 2, synthesis of AlON powders for the ultraviolet (UV) emitter application have been investigated. I have sintered several AlON’s by varying the growth conditions and raw powder composition. Also, This chapter provided how to make a UV field emitting device. I have applied ZnO, AlN and produced AlON powders as a UV emitting layer using screen printing method. A CNT field emission array was used as an excitation source. Finally, I have briefly explained the measurement methods used in this study.
In the chapter 3, the shape, chemical composition, phase analysis, luminescence properties and structural characterizations of produced AlON have been characterized by SEM, EDS, XRD, CL, and TEM. In this chapter, I have found the emission wavelength of AlON could be tuned from 4.29 to 4.54 eV (289 to 272 nm) by changing the synthesizing conditions. A core-shell structure was confirmed for the AlON particles.
In the chapter 4, I have characterized the properties of AlON UV field emitter. The current voltage (I-V) curve for the field emitter was monitored using a high-voltage supply and a picoammeter, and the UV light spectrum was recorded using a photon multiplier tube (PMT) and a monochromator system. In this chapter, It is confirmed that the device performance of a AlON-UV field emitter fabricated via a simple screen-printing technology was comparable to other field emission optoelectronics. I observed a strong UV luminescence from the device centered at 3.68 eV (337 nm). The origin of this luminescence is believed to derive from the local minimum state of the N-rich AlON, which was placed in the inner side of the naturally formed core-shell structure.
In the chapter 5, results of this study have been summarized.
Through this study, I have discovered the promising UV emitting material: AlON, and proved that the convenient novel UV device, which is introducing in this thesis has potential to be used for various applications in UV market in the future.목 차
List of Tables ⅳ
List of Figures ⅴ
Abstract ⅶ
1. 서 론 1
1.1 UV 광원의 필요성 1
1.2 종래의 UV 광원의 문제점 3
1.3 본 연구의 제안 4
1.4 종래 유사 연구결과 5
1.5 전계방출소자(FED) 7
1.5.1 전계방출현상 및 특성 7
1.5.2 FED의 동작원리 및 구조 10
1.5.3 탄소나노튜브와 FED 12
1.6 인쇄전자 기술 13
1.6.1 인쇄전자공정 13
1.6.2 스크린 인쇄법 15
1.7 본 연구의 목적 17
2. 실 험 18
2.1 UV 발광체산질화알루미늄(AlON) 18
2.2 종래의 합성 기술 21
2.3 AlON 파우더 합성 22
2.4 UV 전계방출소자 제작 24
2.5 분석 장비 27
2.5.1 Scanning electron microscopy (SEM) 27
2.5.2 Cathodoluminescence (CL) 31
2.5.3 Energy dispersive x-ray spectroscopy (EDS) 33
2.5.4 Transmission electron microscopy (TEM) 34
2.5.5 X-ray diffraction (XRD) 35
3. AlON 자외선 발광체의 특성 37
3.1 Self propagating synthesis 결과 37
3.1.1 형태분석 37
3.1.2 결정상분석 39
3.1.3 광학적 특성 분석 40
3.2 Combustion synthesis 결과 42
3.2.1 형태분석 42
3.2.2 조성분석 43
3.2.3 결정상분석 45
3.2.4 광학적 특성 분석 47
3.2.5 AlON 입자의 구조 분석 49
4. AlON 자외선 전계방출소자의 특성 52
4.1 음극 제작 조건 최적화 52
4.2 ZnO 자외선 전계방출 소자 54
4.3 AlN, AlON 자외선 전계방출 소자 56
4.4 발광 스펙트럼 분석 58
5. 요약 및 결론 61
감사의 글 63
참고문헌 65
List of publications/List of presentations 6
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
- …
