1,720,955 research outputs found
Mathematical Model of High Moisture Content Paddy Drying in Prime Stage
No full text夏、秋兩季是台灣一期稻作收穫期，期間時常遭遇豪雨及颱風侵襲，已經結穗成熟的稻作很容易就會因豪雨及強風而倒伏，倒伏的稻作因堆疊在一起不利通風，這些富含大量水分的稻穀繼續擺在田裡很容易就會開始發芽或是長霉，因此只要雨季或颱風到來，農民皆紛紛搶收濕穀送至各乾燥中心進行乾燥，但由於乾燥中心採用的循環式乾燥機在處理高含水率稻穀上的效率較差，除了增加能源成本外，也拖慢了整個乾燥流程，導致乾燥機使用壅塞。為解決此問題，必須探討高含水稻穀的乾燥現象並以此設計針對高含水稻穀的預乾燥機。 本研究利用有限元素分析軟體COMSOL Multiphysics 5.0電腦模擬軟體，建立一維球對稱熱、質傳數學模型來模擬單粒厚度稻穀在乾燥過程中的含水率及溫度變化，並進行薄層乾燥實驗。在通風量0.1CMM、0.3CMM、0.5CMM、0.7CMM，通風溫度50度的比較試驗中，各條件之間的含水率變化並無顯著變化，只有在開始的1分鐘，高通風量的乾燥速率顯得稍快一些；而在40℃、50℃、60℃、70℃，通風量0.3CMM的比較試驗中，較高溫的兩組的乾燥速率明顯比較低溫兩組快，且待在恆率乾燥的時間也比低溫的多出將近6分鐘，可以說通風溫度越高對乾燥效率的提升越有幫助。 本研究以乾燥條件60℃，0.3CMM來對照實驗數據與數學模型之吻合度，對照含水率變化和乾燥速率變化在趨勢上都大致吻合。 The 1st paddy harvest in summer and fall always suffer from typhoons and torrential rain in Taiwan. The ripe paddies could be easily beaten down by heavy rain and strong wind. These paddies were difficult to ventilate and could bud or mold in the wet stack. Therefore, farmers would rush in the harvest when the typhoon or rainy season comes, and deliver the wet paddies to drying center for drying. But the recirculating dryer with poor efficiency for the high moisture content paddies. Increase the energy cost, prolong the drying process and decrease the operation capacity. To solve the problem, it is necessary to investigate the drying phenomenon of high moisture content paddies, and design a specific pre-dryer for the high moisture content paddy. The study using the FEM analysis software COMSOL Multiphysics5.0. Establish a 1-dimension sphere symmetry geometry with heat and mass transfer model to simulate the changes of moisture content and paddy temperature during the thin layer drying process. Comparing with the flow rate at 0.1CMM, 0.3CMM, 0.5CMM and 0.7CMM at 50℃, the changes of moisture content almost identical. The drying rate show higher at higher flow rate at the initial 1 minutes. On the other hand, Comparing with the drying temperature at 40℃, 50℃, 60℃ and 70℃ at 0.3CMM, Condition at higher temperature with higher drying rate, and with 6 minutes more than the low temperature in the constant rate period. In the other word, higher the drying temperature, higher the drying efficiency. The study compared the experimental and the mathematical data in the condition of 60℃，0.3CMM, and the changes of moisture content and drying rate roughly identical between the experiment and model
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
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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