2,896 research outputs found
Microstructural damage sensitivity prediction using spatial statistics
No full text© 2019, The Author(s). The vast compositional space of metallic materials provides ample opportunity to design stronger, more ductile and cheaper alloys. However, the substantial complexity of deformation micro-mechanisms makes simulation-based prediction of microstructural performance exceedingly difficult. In absence of predictive tools, tedious experiments have to be conducted to screen properties. Here, we develop a purely empirical model to forecast microstructural performance in advance, bypassing these challenges. This is achieved by combining in situ deformation experiments with a novel methodology that utilizes n-point statistics and principle component analysis to extract key microstructural features. We demonstrate this approach by predicting crack nucleation in a complex dual-phase steel, achieving substantial predictive ability (84.8% of microstructures predicted to crack, actually crack), a substantial improvement upon the alternate simulation-based approaches. This significant accuracy illustrates the utility of this alternate approach and opens the door to a wide range of alloy design tools
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Phase Stability Effects on Hydrogen Embrittlement Resistance in Martensite–Reverted Austenite Steels
No full text学術雑誌論文 / Journal Articlejournal articl
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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
DP600 in-situ microstructural crack nucleation
No full textPlease refer to the publication entitled "Towards physical insights on microstructural damage nucleation from data analytics" by B.C. Cameron and C.C. Tasan, currently in submission
The Labour Trilogy\u27s Last Rites: B.C. Health and a Constitutional Right to Strike
No full textThis paper traces the steps in the denouement of the Supreme Court of Canada\u27s 1987 Labour Trilogy, which denied constitutional protection to collective bargaining and strikes. The first blow to those decisions came in Dunmore, where the Court adopted a collective rather than individual definition of the Charter freedom of association, while another was dealt by B.C Health, where the Court extended s. 2(d) protection to collective bargaining. The Supreme Court might still avoid finding a constitutional right to strike, but, in the author\u27s view the Court has probably gone too far to turn back. If and when the time comes to read the Trilogy its last rites, the author argues against setting a high threshold for a breach of s. 2(d), by adopting the substantial interference test set out in B.C. Health, in this respect, she points to an important difference between collective bargaining and strikes: the former is a positive obligation which imposes on governments a corresponding duty, whereas the latter is a negative entitlement to be free from government interference. While there is a risk that the constitutionalization of strike activity may involve the courts in reviewing labour policy, the solution is not to dilute the content of s. 2(d), but to create a customized s. 1 test for justifying infringements of the guarantee in the labour context - one which would explicitly defer to policy decisions by the legislature
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