1,720,953 research outputs found
Establishment of Risk Decision Model for Motorcycle Riding Space Control
No full text根據交通部統計，2015年台灣機車占有率高達64%，然而三車道以上路段普遍劃設「禁行機車」，為了保障機車合理行駛空間，政府自民國98年起採個案檢討例外開放原則陸續取消外側第三車道禁行機車，但是目前並無對於取消外側第三車道禁行機車事前事後影響較為詳細之分析，因此本研究以交通安全的角度探討該措施對於台灣交通的影響。 首先蒐集目前台北市自民國100年至民國105年取消外側第三車道禁行機車之肇事資料，並以完全貝氏法建立兩個貝氏統計模型Hierarchical Poisson-Gamma model和Hierarchical Poisson-Lognormal model，可求得且分析各車道肇事影響因子，並以DIC值比較模型適合度，結果以Hierarchical Poisson-Gamma model表現較優。 接著計算所蒐集路段事前與事後之風險值，並應用於決策樹(CART)，定義比較事前事後之風險為惡化或改善，以此作為決策樹之目標變數，道路幾何特性與交通量特性則作為自變數，可以得到七條規則，並以隨機森林找出影響決策之重要變數；並比較所有因子、貝氏因子與隨機森林因子建構出之決策樹，以錯誤矩陣驗證經過篩選因子後貝氏因子與隨機森林因子之決策樹整體誤差僅19%，可作為未來政府取消外側第三車道禁行機車之參考。According to the statistics of the ministry of transportation and communications, the sharing rate of the motorcycle is 64% in 2015. However, in generally, the three-lane section’s inside lane is set to be “Forbidding-Motorcycles”. In order to protect the riding space of motorcycles, the government gradually cancelled the forbidding-motorcycles of the third lane based on the local conditions. Nevertheless, there is no detailed analysis of before and after of cancel the forbidding-motorcycles of the third lane. In this case, this study aims to find the influence of motorcycle policy in the safety of traffic measure. The study collects the accident data of forbidding-motorcycles of the third lane from 2011 to 2016 in Taipei. Using the Full Bayesian Method to build two Bayesian Statistical Models: Hierarchical Poisson-Gamma model and Hierarchical Poisson-Lognormal model. With the above models, the accident factors of each lane can be obtained. The DIC value can be applied to define the fitness degree of the model. The result shows that Hierarchical Poisson-Gamma model has better performance. Finally, analyzing the traffic characteristic and accident data which before and after the forbidding-motorcycles, and computing the risk of each road. This result is used in the CART to fine the difference of traffic situation because of the motorcycle policy. After setting the result to be the decision variable of CART, and the road geometric characteristics and traffic volume as the independent variable, the seven rules are gained. The random forests can be applied to find the key variables. Comparison of decision trees which construct by all factors, Bayesian factors and random forests factors. The results show the error is 19% of decision trees which construct by all factors, Bayesian factors and random forests factors, which is comparatively low. This CART can be the effecttive reference for the government to decide whether the forbidding-motorcycles policy of the third lane cancelled or not
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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