1,720,953 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
Analiza dispozitivelor de orientare a panourilor solare pentru eficientizarea acestora
No full textFişierul ataşat conţine: Аннотация, Rezumat, Abstract, Cодержание, Введение, Библиография.В данной магистерской работе рассмотрены технологии слежения за Солнцем, направленные на повышение эффективности солнечных панелей. Основное внимание уделено анализу одноосных
и двухосных солнечных трекеров, их принципам работы, а также сравнительным характеристикам. Были рассмотрены современные тенденции в использовании солнечных трекеров на мировом рынке, их преимущества и недостатки, а также особенности применения в зависимости от климатических условий. В работе представлены принципы работы как одноосных, так и двухосных систем, их роль в оптимизации выработки энергии и эффективность в различных климатических зонах. Приведен детальный анализ производительности систем, обоснована целесообразность применения тех или иных трекеров в зависимости от их стоимости и производительности. Кроме того, работа содержит сравнительный анализ производительности одноосных и двухосных систем на основе реальных данных, что позволило выявить ключевые различия и преимущества каждой из технологий. На основе проведенного анализа даны рекомендации по выбору трекеров для различных типов солнечных ферм. Отдельное внимание в работе уделено реализации собственной двухосной системы слежения за Солнцем на базе Arduino. Уникальность данной системы заключается в применении кнопочного управления для регулировки скорости поворота панели, что обеспечивает большую гибкость в эксплуатации. Были подробно описаны алгоритмы работы системы, включая обработку данных с датчиков освещенности, температуры и влажности, а также логика управления сервоприводами. В последней части работы представлены результаты тестирования разработанной системы. Показано, как изменение углов ориентации солнечной панели влияет на интенсивность освещения и, соответственно, на её производительность. Были построены графики изменения параметров работы системы, что позволило провести детальный анализ её эффективности в реальных условиях эксплуатации. Результаты исследования могут быть полезны для дальнейшей оптимизации солнечных установок, способствуя развитию возобновляемых источников энергии и повышению рентабельности солнечных энергетических проектов.Această lucrare de masterat examinează tehnologiile de urmărire a Soarelui, orientate spre creșterea eficienței panourilor solare. Accentul principal este pus pe analiza trackere-lor solare uniaxiale și biaxiale, principiile lor de funcționare, precum și caracteristicile comparative. Au fost analizate tendințele moderne în utilizarea trackere-lor solare pe piața globală, avantajele și dezavantajele lor, precum și caracteristicile aplicării acestora în funcție de condițiile climatice. Lucrarea prezintă principiile de funcționare ale sistemelor uniaxiale și biaxiale, rolul lor în optimizarea producției de energie și eficiența acestora în diferite zone climatice. Este oferită o analiză detaliată a performanței acestor sisteme și este justificată aplicarea anumitor trackere în funcție de costul și performanța lor. De asemenea, lucrarea include o analiză comparativă a performanței trackere-lor uniaxiale și biaxiale pe baza datelor reale, ceea ce a permis identificarea principalelor diferențe și avantaje ale fiecărei tehnologii. Pe baza analizei realizate, au fost oferite recomandări pentru selectarea trackere-lor în funcție de diferite tipuri de ferme solare. Un aspect distinct al lucrării îl constituie realizarea unui sistem biaxial propriu de urmărire a Soarelui bazat pe Arduino. Unicitatea acestui sistem constă în utilizarea unui control prin buton pentru reglarea vitezei de rotire a panoului, ceea ce oferă o flexibilitate crescută în utilizare. Au fost descriși în detaliu algoritmii de funcționare a sistemului, inclusiv procesarea datelor de la senzori de iluminare, temperatură și umiditate, precum și logica de control a servomotoarelor. În ultima parte a lucrării sunt prezentate rezultatele testării sistemului dezvoltat. A fost demonstrat modul în care modificarea unghiurilor de orientare a panoului solar influențează intensitatea luminii și, implicit, performanța acestuia. Au fost realizate grafice ale variației parametrilor de funcționare ai sistemului, ceea ce a permis o analiză detaliată a eficienței acestuia în condiții reale de exploatare. Rezultatele cercetării pot fi utile pentru optimizarea ulterioară a instalațiilor solare, contribuind la dezvoltarea surselor de energie regenerabilă și la creșterea rentabilității proiectelor de energie solară.This master’s thesis examines solar tracking technologies aimed at increasing the efficiency of solar
panels. The main focus is on the analysis of single-axis and dual-axis solar trackers, their principles of operation, and their comparative characteristics. Modern trends in the use of solar trackers in the global market, their advantages and disadvantages, as well as their application features depending on climatic conditions, were reviewed. The study presents the principles of operation for both single-axis and dual-axis systems, their role in optimizing energy production, and their efficiency in various climatic zones. A detailed analysis of system performance is provided, and the feasibility of using specific trackers based on their cost and performance is justified. Additionally, the thesis includes a comparative analysis of the performance of single-axis and dual-axis trackers based on real data, which allowed for the identification of key differences and advantages of each technology. Based on the conducted analysis, recommendations were made for selecting trackers for different types of solar farms. A unique aspect of this work is the implementation of a custom dual-axis solar tracking system based on Arduino. The uniqueness of this system lies in the use of button-based control to adjust the panel's rotation speed, which provides greater flexibility in operation. The system's operating algorithms, including data processing from light, temperature, and humidity sensors, as well as servo motor control logic, are described in detail. The final part of the thesis presents the results of testing the developed system. It was demonstrated how changes in the orientation angles of the solar panel affect light intensity and, consequently, its performance. Graphs of system parameter variations were constructed, allowing for a detailed analysis of its efficiency under real operating conditions. The results of the research can be useful for further optimization of solar installations, contributing to the development of renewable energy sources and improving the profitability of solar energy projects
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
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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