1,721,157 research outputs found
Supplemental material for Calibrated Optical Markers to Study Thermal Degradation in Edible Oils Using Raman and Optical Transmission Spectroscopy
No full textSupplemental Material for Calibrated Optical Markers to Study Thermal Degradation in Edible Oils Using Raman and Optical Transmission Spectroscopy by Ho-Ying Lam, Sandip Ghosh and Surojit Chattopadhyay in Applied Spectroscopy</p
Texture evolution in an aluminum alloy processed by ECAP with concurrent precipitate fragmentation
No full textThe textural evolution of a spray-cast aluminum 7034 alloy was investigated during processing by equal-channel angular pressing (ECAP). Texture weakening was observed after the initial pass but there was evidence for texture strengthening after six passes. The initial deviation from the ideal shear texture components and from the predicted ECAP texture components is attributed to the occurrence of strain relaxation due to extensive precipitate fragmentation in the early stages of ECAP
Effect of twinning on microstructural evolution during dynamic recrystallisation of hot deformed as-cast austenitic stainless steel
No full textAn as-cast austenitic stainless steel was hot deformed at 1173 K, 1223 K, and 1373 K (900° C, 950° C, and 1100° C) to a strain of 1 with a strain rate of 0.5 or 5s⁻¹. The recrystallised fraction is observed to be dependent on dynamic recrystallisation (DRX). DRX grains nucleated at the initial stages of recrystallization have similar orientation to that of the deformed grains. With increasing deformation, Cube texture dominates, mainly due to multiple twinning and grain rotation during deformation.Ankan Guria, Gopi K. Mandal, Peter Hodgson, John H. Beynon, and Sandip Ghosh Chowdhur
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
Texture evolution during room temperature ageing of silver processed by equal-channel angular pressing
No full textThe evolution of texture was investigated using silver samples processed by equal-channel angular pressing for different numbers of passes and stored at room temperature for up to 4 months. For 1 and 4 passes, only a slight texture intensity change was detected during storage. For 8 and 16 passes, there was a weakening of components A*(20) and C-0 and the development of a strong A*(10) component due to significant recrystallization in the severely deformed samples. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserve
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
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