1,721,031 research outputs found
A study on the shunt effect in resistance spot welding
No full textOne of the important factors affecting the weld quality of practical resistance spot welding is the shunt effect, which deteriorates weld quality due to the shunt current that flows through neighboring welds. Although some experimental studies for compensation for its effect have been presented, no effort has been made to establish an analytical model that can predict the effect of shunt mechanism on the weld quality. This paper presents an analytical model by which the shunt effect upon the nugget growing behavior can be analyzed. The voltage field and temperature distribution in the weldment are computed by the proposed three-dimensional finite difference numerical model. Experimental verification of the calculated results was also performed and discussed in detail. The comparison of both results shows that the proposed thermal-electric model can predict the shut effect fairly well
Anterior open bite treated by non-surgical and non-extraction orthodontic therapy – case report
No full text
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
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
Feminist Geography and Its Sluggish Development in Taiwan
No full text本文以歐美女性主義地理學的三波發展為基礎，檢視女性主義地理學在臺灣的發展，以及本土地理學的學術環境。研究顯示，歐美女性主義地理學雖已經過三波發展，但卻並未在本土地理學界引發討論，相關理論也僅能在概論性的課程中有一兩堂課的簡介; 臺灣雖有著多元的性別議題，但對地理學界的影響較不顯著; 在地理學界少數與性別相關研究中，受第二、三波女性主義之本體論、知識論與方法論啟發者也非常稀少。整體而言，涉及所有人們日常生活的經驗與認知、關聯所有社會、經濟與政治活動的性別問題，在地理學界尚未受到應有的重視。學界仍將自己圈圍在難以穿透的高牆中，將女性主義者所關切的社會議題，以及相關國際學術脈動隔離在外，無論在想像、實質與生活空間上都相當封閉。這固然可歸因於國家、父權與學術資本主義等結構性限制因素，但施為者不質疑、不衝撞、消極以對的態度，可能更是讓結構限制得以橫行無阻的關鍵。在這樣的學術氛圍下，要形成改變尚有賴有識之士不斷提升學界之性別意識; 吸引新生代加入行列; 以女性主義的本體論、知識論與方法論分析、質疑、批判既有習癖、制度與學術研究。並走出畫地自限的圈子，連結相關理論與力量，團結起來對地理學界形成壓力，方能促使本土地理學界開始建立更性別友善的學術環境，及強調性別意識。In this paper, I draw on three waves of feminist geography to investigate the development of feminist geography and the environment of academy geography in Taiwan. The study shows that while feminism has gone through three waves of development, it is hardly taught and discussed in local academy. While there are many thorny gender issues inside and outside the academy, little gender-related research was held. Within the handful gender-related works, not much was informed by feminist ontology, epistemology, methodology and issues raised by the second and third wave feminism. In general feminist geography and gender issues have not been taken seriously. Local academy geography still keeps itself in rigid barrier and leaves little spaces for feminism. Although constrains set by nationalism, chauvinism and academic capitalism structures may have caused it, passive reaction by the academy allows the structural constrains unquestioned and prevailed. It is time to take action to raise gender consciousness. We need to introduce feminist-oriented ontology, epistemology and methodology and critique current gender-blind habitu?s, institutions and research works. We must walk out of the isolated cave and unite with other feminists to put pressure on the academy. With all these efforts we can then start to imagine and establish more gender-friendly environment and knowledge
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
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