1,720,968 research outputs found
Upaya Peningkatan Sifat Mekanik pada Baja Mild Steel melalui Perbaikan Kualitas dengan Heat Treatment Annealing dan Holding Time Heat Treatment dengan Taguchi Method;
No full textPengelasan sebagai media untuk menyambung dua logam sebagai benda kerja. SMAW adalah pengelasan busur listrik dengan elektroda terbungkus. Kelebihan menggunakan pengelasan ini adalah biaya yang murah, cepat dalam pengerjaan, ringan, dan variatif dalam hal pengerjaan lasan. Untuk kualitas lasan, tergantung dengan pengerjaan, proses dan tenaga ahli. Dalam penelitian ini variasi yang digunakan adalah kuat arus 75 A, 85 A, dan 95 A, untuk elektroda yang digunakan adalah elektroda baru, elektroda dipanaskan sampai 100 OC, dan elektroda ditambahkan senyawa kalium kemudian dipanaskan 100 OC. sedangkan jarak specimen menggunakan 3 mm, 4 mm, dan 5 mm. Dari hasil penelitian didapatkan bahwa elektroda yang menghasilkan kekerasan dan kekuatan tarik yang besar, menggunakan elektroda 3 dengan kuat arus 95 A dan jarak specimen 5 mm
ANALYSIS TOOL OVERHANG IN THE MACHINE CNC ET-242 ON SURFACE ROUGHNESS WITH VARIATION OF FEEDING
Get PDFLathe is a process to get the shape of the cylindrical workpiece by rotating the workpiece on the spindle and moving the chisel towards the workpiece. To be able to screw the workpiece of the chisel should hang and extend from the turret. The length of the hanging chisel is called the tool overhang (Zelinski, 2005: 1). There is no definite hint of setting the tool overhang and only adjusted between the position of the turret and workpiece. In order to achieve a good surface roughness, usually the overhang tool is arranged to a minimum.In this study the independent variables used are the tool overhang 14 mm, 21 mm, 28 mm, 35mm and feeding 0.15 mm rotation-1, 0.25 mm rotation -1, 0.35 mm. rotation -1. The measured dependent variable is the surface roughness of the workpiece.From the results of testing and data analysis can be concluded that the tool overhang effect on the roughness of the workpiece surface results of the process of lathe in various variations of feeding (feeding). The longer the tool overhang and the greater the feeding motion will result in greater surface roughness. The lowest surface roughness was obtained from a 14 mm long overhang tool and feeding 0.15 mm rotation-1.Keywords : Â Machine CNC ET-242, Surface Roughness, Feeding Variation
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
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