1,720,956 research outputs found
Comparison of adaptive neuro fuzzy inference system and response surface method in prediction of hard turning output responses
No full textHard turning has been used to replace cylindrical grinding to obtain high quality surface finish of complex parts with hardness above 45 HRC. Surface roughness is characterized among the most critical attributes in hard turning and it is important to the manufacturer to have accurate understanding of the machining process prior to its optimization process. The aim of this paper is to compare the capability of adaptive neuro-fuzzyinference system (ANFIS) model with response surface method (RSM) in developing the correlation of machining parameter and output responses. The input for both models are cutting speed (v), feedrate (f), and depth of cut (d), whereas the output responses are flank wear (Vb) and surface roughness (Ra, Rq and Rz). The results indicate that the accuracy of predicted values of ANFIS model overwhelmed the predicted value of RSM model with up to 42% higher. At this level of accuracy, ANFIS model shows its applicability to be an objective function in evolutionary algorithm
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
Finite Element Analysis of Springback Process in Sheet Metal Forming
Get PDFSpringback prediction is essential to ensure the economics of sheet metal forming operations. To achieve accurate results, current nonlinear recovery applications in finite element (FE) analysis have become more complicated and therefore require complex computational programming work to develop a constitutive model. At the end of a plastic deformation and after the load is released from the sheet metal, the change of stress in the elastic area becomes nonlinear. The change of elastic modulus is influenced by the amount of plastic strain, yield locus size, and stress normalization point. The effects of nonlinear recovery on the residual stress distribution and the sheet metal final shape after springback were investigated. The analysis results show that the formed hysteresis loops due to the unloading and reloading process were able to be simulated successfully by the proposed method. It was found that the distribution of non-zero residual stresses at the end of springback process was highly related to the nonlinear recovery curve
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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