1,720,985 research outputs found
Pierre Bauduin, Simon Lebouteiller, Luc Bourgeois (dir.), Les transferts culturels dans les mondes normands médiévaux (VIIIe–XIIe siècle). Objets, acteurs et passeurs, Turnhout (Brepols) 2021
No full textInternational audiencePierre Bauduin, Simon Lebouteiller, Luc Bourgeois (dir.), Les transferts culturels dans les mondes normands médiévaux (VIIIe–XIIe siècle). Objets, acteurs et passeurs, Turnhout (Brepols) 2021, 350 p., 7 col., 67 b/w fig. (Cultural Encounters in Late Antiquity and the Middle Ages, 36), ISBN 978-2-503-59366-1, EUR 90,00
Stress constrained topology optimization for additive manufacturing: Specific character and solution aspects
No full textDesign of homogenized microstructure using stress-based topology optimization
No full textThis paper aims at designing microstructures using stress-based topology optimization. Most of the developments so far
have been made for compliance design in various field of applications as reflected in the literature. The emergence of the new additive
manufacturing techniques allows to consider porous material, such as lattice structures for instance, which ca be used for the design of
structural components subject to various solicitations. Those components must account for the stress level to prevent failure everywhere
in the microstructure and by extension the whole structure itself. This work proposes to design such microstructure using topology
optimization with limitation on the stress level within the microstructure before printing the result. The homogenization technique is
used to determine the equivalent material properties. The issues and perspectives are also discussed
Stress-based topology optimization with fatigue failure constraints
No full textThis paper shows how the design of a structure can evolve when considering a stressbased
topology optimization along with fatigue failure constraints. More precisely,
fatigue failure is added in a stress-based topology optimization Matlab code by following
the approach of the design of machine elements, i.e. based on S-N curves or
fatigue criteria. The fatigue is introduced through weel-known criteria for high-cycle
fatigue such as the Sines and Crossland criteria. The paper presents how these criteria
can be formulated for a topology optimization problem. Numerical results for
both criteria are successively compared and discussed. The character of fatigue failure
in the optimization procedure is illustrated as well as some issues that have to be
improved in future work.Contributions to topology optimization of structural components made by additive manufacturing - PhD thesi
Topology optimization of mechanical and aerospace components subject to fatigue stress constraints
No full text
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
- …
