920,188 research outputs found
Aging characteristics of solid polymeric materials used for electrical insulation.
No full textPolymeric materials have been increasingly used as electrical insulation since 1960's, partly as a result of more and more new materials are being invented. Compared with historically traditional insulation materials such as porcelain and glass, aging performance is a big concern for polymeric insulation materials. Three most commonly used solid polymeric materials: polyvinyl chloride, epoxy resin and high temperature vulcanized silicone rubber were selected as the test objects in the study leading to this thesis. The aging characteristics for the three materials were revealed by experiments following elaborated test procedures. Variety of experimental methods for evaluating the aging characteristics of polymeric materials used for electrical insulation, which may be used to study other polymeric materials, have been presented in the thesis. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis2000 .Z52. Source: Masters Abstracts International, Volume: 39-02, page: 0570. Adviser: R. Hackam. Thesis (M.A.Sc.)--University of Windsor (Canada), 2000
Variations on the Author
No full text“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
Distribution loss reduction: A genetic algorithm approach.
No full textIn this thesis two genetic algorithm methods are developed which my be applied to perform real-tune, on-line control of the shunt capacitors and voltage regulators that are placed on a distribution system for the purpose of reducing distribution losses, while all bus voltages within +/-5% of their nominal rated values. The first genetic algorithm method employs a penalty based fitness function, while the second genetic algorithm method employs a fuzzy logic based fitness function. Both methods are tested on a 30 bus distribution system under varying load conditions and the results obtained are compared with the global optimal solution which is obtained by performing an exhaustive search of the solution space using the penalty based fitness function as its objective function. The results of the penalty based method are quite close to those of the global optimal solutions for the load levels studied. The results of the fuzzy based method while not as good as those of the penalty based method are quite promising, and deserves further study. Both genetic algorithm methods were capable of arriving at a solution in less than 3 minutes and 30 seconds, and hence, would be suitable for real-time, on-line applications.Dept. of Electrical and Computer Engineering. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis1998 .M68. Source: Masters Abstracts International, Volume: 39-02, page: 0566. Advisers: R. Hackam; A. Y. Chikhani. Thesis (M.A.Sc.)--University of Windsor (Canada), 1998
Loss reduction in power distribution networks.
No full textIn this thesis, a new technique for power loss reduction in the distribution networks is presented. This technique depends on applying compensating capacitors at certain nodes on the system (sensitive nodes) to compensate for the reactive current flow. These sensitive nodes are selected carefully, as they have the largest effect on the system loss reduction when they are injected with reactive power from compensating capacitors. The number of these sensitive nodes is very small compared to the number of the total system nodes. The sensitive node is selected by first identifying the branch which has the largest losses due to reactive power. Then, the node therein which has the largest reactive power is selected. The capacitor rating is determined by differentiating the system losses with respect to the load connected to that node. The compensating capacitors are placed at these optimal locations with appropriate VAR rating to achieve maximum benefits in dollar savings. This novel technique has been applied to the small size (200 MVA) distribution network of the city of Kingston, Ontario, and to the medium size (560 MVA) network of the city of Windsor, Ontario. The amortized capital and labour costs of the capacitor installation have been taken into account to calculate the net saving. Also, a method for implementing the load variations throughout the year is presented. The technique of applying compensating capacitors has been combined with a method of reconfiguration of the distribution system to reduce further the losses. The combination of the two methods has been applied to the distribution networks of the cities of Windsor and Kingston, Ontario, Canada. Significant savings have been obtained in both systems. This work provides a loss reduction algorithm that is superior to any other known technique.Dept. of Electrical and Computer Engineering. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis1994 .A22. Source: Dissertation Abstracts International, Volume: 56-01, Section: B, page: 0406. Adviser: Reuben Hackam. Thesis (Ph.D.)--University of Windsor (Canada), 1994
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe 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 construction of Karen Karnak: The multi-author-function
No full textThis thesis is situated within the comparatively recent developments of Web 2.0 and the emergence of interactive WikiMedia, and explores the mode of authorship within a Read/Write culture compared to that of a Read/Only tradition. The hypothesis of this study is that the role of the audience has become merged with the author, and as such, represents new functions and attributes, distinct from a more conventional concept of authorship, in which the roles of audience and author are more separate. Read/Write and participatory culture, as defined by this study, is focused on collaboration, and includes the influences of D.I.Y. culture, Open-Source practices and the production of text by multiple authors. Multi-authorship presents a re-thinking of several concepts which support the notion of the individual author, since the focus of multi-authorship is not on attribution and ownership of a finished text, but on the continued malleability of a text. Modes of multi-authorship, demonstrated in the use of the pseudonyms Alan Smithee and Karen Eliot, represent declarative authors whose names signify multiple origins, whilst concurrently indicating a distinct body of work. The function of these names form an important context to this study, since primary research involves the construction of an experimental mode of multi-authorship utilising WikiMedia technology and the interaction of thirty nine participants, who are invited to create a body of work under the collective pseudonym Karen Karnak. The data generated by this experiment is analysed using aspects of Michel Foucault's author-function to identify and determine power structures inherent in the WikiMedia context. The interplay of power structures, including concepts such as identity, ownership and the body of work, affect the resulting mode of authorship and contribute to the construction of Karen Karnak, suggesting further areas of research into the emerging multi-author
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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
Impact of seasonal variation in meteorological conditions on dry eye severity
No full textHarrison Dermer,1 Anat Galor,2,3 Abigail S Hackam,3 Mehdi Mirsaeidi,2–4 Naresh Kumar5 1Miller School of Medicine, University of Miami, Miami, FL, USA; 2Eye Care (Ophthalmology), Miami Veterans Affairs (VA) Medical Center, Miami, FL, USA; 3Ophthalmology Department, Bascom Palmer Eye Institute, Miami, FL, USA; 4Divison of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Miami, Miami, FL, USA; 5Public Health Sciences, Environmental Health Division, University of Miami, Miami, FL, USA Purpose: To compare dry eye (DE) diagnosis patterns by season in Miami vis-a-vis the US and examine differences in DE symptoms and signs by season in Miami.Patients and methods: US veteran affairs (VA) patient visits with ICD-9 codes for DE (375.15) and routine medical examination (V70.0) from 2010 to 2013 were retrospectively analyzed to evaluate the seasonal pattern of DE diagnosis. A total of 365 patients with normal ocular anatomy were prospectively recruited from the Miami VA eye clinic from 2014 to 2016 for the assessment of symptoms and signs.Results: While DE visit prevalence in Miami was about 10% lower than that of the rest of the country (22.5% vs 33.7%), Miami had roughly four times higher variability in DE visit prevalence throughout the year than the US. Peak values for DE symptoms in the Miami cohort aligned with peak DE prevalence seen in the retrospective sample, occurring in spring and fall. A similar, but less dramatic, pattern was noted with DE signs. The seasonal pattern in DE symptoms remained even after controlling for confounders including demographics and medication use.Conclusion: DE symptoms, and to a lesser degree signs, varied by month, with the highest severity of symptoms occurring in spring and fall, which corresponded with peak allergy season and weather fluctuations, respectively. These findings have important implications for season-specific diagnosis, treatment, and management of DE. Keywords: seasonality, DE signs and symptoms, weather, pollen, United States, epidemiolog
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 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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