Consensus theories: an oriented survey

This article surveys seven directions of consensus theories: Arrowian results, federation consensus rules, metric consensus rules, tournament solutions, restricted domains, abstract consensus theories, algorithmic and complexity issues. This survey is oriented in the sense that it is mainly – but not exclusively – concentrated on the most significant results obtained, sometimes with other searchers, by a team of French searchers who are or were full or associate members of the Centre d'Analyse et de Mathématique Sociale (CAMS).Consensus theories ; Arrowian results ; aggregation rules ; metric consensus rules ; median ; tournament solutions ; restricted domains ; lower valuations ; median semilattice ; complexity

Consensus theories: an oriented survey

URL des Documents de travail : http://ces.univ-paris1.fr/cesdp/cesdp2010.htmlDocuments de travail du Centre d'Economie de la Sorbonne 2010.57 - ISSN : 1955-611XThis article surveys seven directions of consensus theories: Arrowian results, federation consensus rules, metric consensus rules, tournament solutions, restricted domains, abstract consensus theories, algorithmic and complexity issues. This survey is oriented in the sense that it is mainly – but not exclusively – concentrated on the most significant results obtained, sometimes with other searchers, by a team of French searchers who are or were full or associate members of the Centre d'Analyse et de Mathématique Sociale (CAMS).Cet article présente une vue d'ensemble de sept directions de recherche en théorie du consensus : résultats arrowiens, règles d'agrégation définies au moyen de fédérations, règles définies au moyen de distances, solutions de tournoi, domaines restreints, théories abstraites du consensus, questions de complexité et d'algorithmique. Ce panorama est orienté dans la mesure où il présente principalement – mais non exclusivement – les travaux les plus significatifs obtenus – quelquefois avec d'autres chercheurs – par une équipe de chercheurs français qui sont – ou ont été – membres pléniers ou associés du Centre d'Analyse et de Mathématique Sociale (CAMS)

Symmetry in Graph Theory

This book contains the successful invited submissions to a Special Issue of Symmetry on the subject of ""Graph Theory"". Although symmetry has always played an important role in Graph Theory, in recent years, this role has increased significantly in several branches of this field, including but not limited to Gromov hyperbolic graphs, the metric dimension of graphs, domination theory, and topological indices. This Special Issue includes contributions addressing new results on these topics, both from a theoretical and an applied point of view

Crafting women’s narratives: the material impact of twenty-first century romance fiction on contemporary steampunk dress

Science fiction author K.W. Jeter coined the term ‘steampunk’ in his 1987 letter to the editor of Locus magazine, using it to encompass the burgeoning literary trend of madcap ‘gonzo’-historical Victorian adventure novels. Since this watershed moment, steampunk has outgrown its original context to become a multimedia field of production including art, fashion, Do-It-Yourself projects, role-playing games, film, case-modified technology, convention culture, and cosplay alongside science fiction. And as steampunk creativity diversifies, the link between its material cultures and fiction becomes more nuanced; where the subculture began as an extension of the text in the 1990s, now it is the culture that redefines the fiction. As this shift occurs, women’s narratives have grown in prominence and the treatment of female characters has become more three-dimensional than those of Jeter’s initial cohort. This new wave of authors like Gail Carriger, Cherie Priest, Ekaterina Sedia, and Adrienne Kress write a generation of bold female leads that appeal to millennial readers; this body of fiction is balanced by the efforts of steampunk bloggers and academics like Suna Dasi, Diana M. Pho, and Jaymee Goh who challenge steampunk’s canon for representation, diversity and appropriate treatment of race, gender, and sexuality. As more authors, makers, cosplayers, and academics work towards intersectional creativity and balanced narratives, steampunk becomes more focused on personal storytelling and less anchored to a literary canon. In this thesis, I investigate in what ways – and with what tools – women craft their own narratives and cultivate representation inside the steampunk cultural space, thereby transforming it. I explore the symbiotic nature of women’s storytelling and women’s dress in steampunk culture, tracing the link between character descriptions and development in fiction with the material qualities of women’s convention looks, fashion designs, cosplay, ‘steampunk light’ (casual street-style looks), styled photoshoots, and social media content and interactions. In my study of women’s narratives, I place particular focus on the impact of steampunk romance and romantic fiction – and the expectation of women to write romance – as the cypher linking inspiration to creative practices. My investigation is an intertextual probe into the osmotic nature of fiction and fashion, analysing Anglo-American steampunk writing and dress practices’ interplay. This analysis hinges on two theoretical points: narratives of becoming and being gender performance (Butler 1990, 1991, 1993; Halberstam 1998; McRobbie 1980, 2004) and inverse ekphrasis (Heffernan 1991 and Domínguez et al. 2015), a condition where the literary inspires life. At the thesis’s close, it will have provided the first detailed academic analysis of steampunk women’s fashion and gender performance as they are both written and informed by the contexts – and connotations – of romance fiction

Proceedings of the 3rd International Workshop on Optimal Networks Topologies IWONT 2010

Peer Reviewe

Unmet goals of tracking: within-track heterogeneity of students' expectations for

Educational systems are often characterized by some form(s) of ability grouping, like tracking. Although substantial variation in the implementation of these practices exists, it is always the aim to improve teaching efficiency by creating homogeneous groups of students in terms of capabilities and performances as well as expected pathways. If students’ expected pathways (university, graduate school, or working) are in line with the goals of tracking, one might presume that these expectations are rather homogeneous within tracks and heterogeneous between tracks. In Flanders (the northern region of Belgium), the educational system consists of four tracks. Many students start out in the most prestigious, academic track. If they fail to gain the necessary credentials, they move to the less esteemed technical and vocational tracks. Therefore, the educational system has been called a 'cascade system'. We presume that this cascade system creates homogeneous expectations in the academic track, though heterogeneous expectations in the technical and vocational tracks. We use data from the International Study of City Youth (ISCY), gathered during the 2013-2014 school year from 2354 pupils of the tenth grade across 30 secondary schools in the city of Ghent, Flanders. Preliminary results suggest that the technical and vocational tracks show more heterogeneity in student’s expectations than the academic track. If tracking does not fulfill the desired goals in some tracks, tracking practices should be questioned as tracking occurs along social and ethnic lines, causing social inequality