1,721,087 research outputs found
Sintering temperature optimization of ultra-fine Tungsten Carbide Cobalt (WC-CO) tool insert with addition of Carbon (C) and Vanadium Carbide (VC) \ Muhammad Haikal Muhammad Mukhtar
Full text linkProduction of Tungsten Carbide Cobalt (WC-Co) tool inserts have been the subject of interest for multiple research programmes around the world, with the hope of improving mechanical properties as the result from reducing grain size from sub¬micron level to ultra-fine level. WC-Co tool inserts are manufactured through powder metallurgy (PM) route where sintering is the key process. However, the optimum sintering temperature of ultra-fine WC-Co has not yet been identified. Inappropriate sintering temperature may contribute to lower mechanical properties. Lower sintering temperature will lead to incomplete sintering while too high sintering temperature will contribute to grain growth activities. In this work, the optimized sintering temperature was studied on WC-Co tool insert with the addition of 0.2% carbon and 0.6% vanadium carbide. The samples were fabricated by PM process and sintered in Nitrogen 95%-Hydrogen 5% environment at three different temperatures of 1350°C, 1400°C, and 1450°C with constant heating rate and 1 hour holding time. The effect of sintering temperature on the mechanical properties of WC-Co-C-VC was determined by transverse rupture strength (TRS) test, Vickers hardness test, density measurement, and microstructure analysis. Test results implies that samples sintered at 1400°C exhibits the best TRS, hardness, and density values along with desired microstructures formation
Malaysian MBA: their impact on organizational effectiveness / Justine Sinsoi, Muhammad Mukhtar Hanipah and Maisarah Abdul Rahman
Full text linkThe question to whether the M.B.A. holders have great impact on the organizational effectiveness has no definite answer. However, in the course of our research, we had set up certain standards for measuring the effectiveness so as to provide a clear picture of the significance of their contributions. Through findings, we found out that the number of M.B.A. holders that were employed in the banking sector is substantially large compared to other sectors. In the course of our research, we have taken Bank Negara (Central Bank) and five commercial banks as examples. The commercial banks are Bank Bumiputra Malaysia Bhd., Malayan Banking Bhd., Citibank, The Standard Chartered Bank, and The Malaysian French Bank. In presenting the report, much care has been taken to present it in a systematic manner. During our research we found it very troublesome (and frustrating) to face and deal with a mass of fragmented disorganized data. It seemed necessary to try to understand by locating general principles while running through and tying together, these unsystematic findings
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
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
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