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Path eccentricity of k-AT-free graphs and application on graphs with the consecutive ones property
No full textThe central path problem is a variation on the single facility location problem. The aim is to find, in a given connected graph G, a path P minimizing its eccentricity, which is the maximal distance from P to any vertex of the graph G. The path eccentricity of G is the minimal eccentricity achievable over all paths in G. In this article we consider the path eccentricity of the class of the k-AT-free graphs. They are graphs in which any set of three vertices contains a pair for which every path between them uses at least one vertex of the closed neighborhood at distance k of the third. We prove that they have path eccentricity bounded by k.Moreover, we answer a question of Gómez and Gutiérrez asking if there is a relation between path eccentricity and the consecutive ones property. The latter is the property for a binary matrix to admit a permutation of the rows placing the 1's consecutively on the columns. It was already known that graphs whose adjacency matrices have the consecutive ones property have path eccentricity at most 1, and that the same remains true when the augmented adjacency matrices (with ones on the diagonal) have the consecutive ones property. We generalize these results as follow. We study graphs whose adjacency matrices can be made to satisfy the consecutive ones property after changing some values on the diagonal, and show that those graphs have path eccentricity at most 2, by showing that they are 2-AT-free.info:eu-repo/semantics/publishe
Livre audio :que change l’arrivée de Spotify pour les éditeurs ?
No full textFin 2024, Spotify a lancé son offre de livres audio en France et au Benelux, après l’avoir déployée sur les marchés anglo-saxons. Les abonnés à la plateforme ont depuis accès à 200 000 titres, dont environ 15 000 en langue française, sans souscription supplémentaire. Si cette diversification permet à Spotify de mieux se différencier sur un marché du streaming musical très concurrentiel, on peut se demander ce que les éditeurs ont à y gagner.info:eu-repo/semantics/publishe
Effect of Curing Temperature on Volume Changes in Alkali-Activated Slag Pastes
No full textThis study investigates the influence of curing temperature (explored at 10 ◦C,20 ◦C, and 30 ◦C) on the volume changes of alkali-activated slag (AAS) pastes with theaim of expanding existing knowledge on alkali-activated materials (AAMs). The focuswas on autogenous and thermal strains, internal relative humidity (IRH), heat flow andcumulative heat, setting times, and workability. The results indicate that increasing thecuring temperature to 30 ◦C reduces autogenous shrinkage, likely due to changes in theelastic modulus and viscoelastic properties, while promoting swelling, especially for highermolarities. The coefficient of thermal expansion (CTE), related to thermal strains, is higherwhen the curing temperature is increased, but its development is delayed. The IRH isinfluenced more by the activating solution’s molarity than by curing temperature, althoughtemperature does affect the initial IRH. The study also revealed that higher curing temperaturesaccelerate chemical reactions and reduce setting times. The initial workability wassignificantly affected by the solution-to-binder ratio, while higher temperatures decreasedworkability, especially at higher molarities. These findings contribute to the understandingof how curing temperature influences the durability of AAS pastes, offering insights intooptimized construction practices under varying environmental conditions.info:eu-repo/semantics/publishe
Stakeholder involvement in realist evaluation: A scoping review and best fit framework synthesis
No full textAs a theory-driven evaluation design grounded in the critical realism philosophy, realist evaluation relies on eliciting the assumptions of stakeholders about how programmes are expected to produce outcomes. Little is known about key principles for involving stakeholders in realist evaluations. In this scoping review of realist evaluation studies, we explored how stakeholders were involved in the conduct of realist evaluation. A total of 26 ‘participatory’ realist evaluation studies have been included. We analysed the approach to the involvement of stakeholders, using an analytical framework rooted in existing theories and models of participatory research and evaluations, using a ‘Best Fit Framework Synthesis’ methodology. We found a large range of approaches to stakeholder involvement, related to the types of stakeholders involved, their depth of involvement and means by which researchers/evaluators fostered their involvement. We discuss key lessons learnt and contribute to foster transparent and meaningful involvement of stakeholders in Realist Evaluation.SCOPUS: ar.jinfo:eu-repo/semantics/publishe
ArchiLesbiennes. I am Lesbian et j’ai une histoire
No full textConférence-gesticulée.Mathilde Messina, Valérie Piette et Cécile Vanderpelen-Diagre succombent à l’irrésistible attrait du plateau pour une conférence gesticulée, réjouissante et militante. Une exploration introspective autant que collective où les lesbiennes tiennent le premier rôle. Une union libre et féconde des sciences et des arts.Pourquoi les histoires d’Eliane, Odile, Catherine, Christine ou Agnès sont-elles si importantes ?Parce que c’est une parole d’elles-mêmes sur elles-mêmes. Parce que leurs histoires sont et font l’Histoire des femmes lesbiennes invisibilisées parmi les femmes. Parce que leurs histoires sont l’Histoire des femmes invisibilisées dans l’Histoire, tout court. Et sans Histoire, sans passé, on n’existe pas. Ici, la conférence scientifique n’empêche pas la conférence gesticulée. Au contraire, elle l’exhausse en faisant sauter les verrous avec un humour incisif. Il en découle une fine observation politique et avant-gardiste des schémas hétéronormatifs et patriarcaux à la Piette, Vanderpelen-Diagre et Messina. Et c’est fascinant.D’après la contribution Archilesbiennes :les premiers émois d’une mémoire en construction de Valérie Piette, Cécile Vanderpelen-Diagre et Margherita Romengo dans le cadre du colloque ArchiLesbiennes I am Lesbian et j’ai une histoire. Une histoire de luttes et de désirs (Belgique et ailleurs, XX-XXIe siècles) présenté en février 2024 à l’Université libre de Bruxelles.info:eu-repo/semantics/nonPublishe
Bicycles aesthetics, mobilities of care and equipment trajectories: An international comparison of gender construction processes around cycling equipment
No full textBicycles aesthetics, mobilities of care and equipment trajectories: an international comparison of gender construction processes around cycling equipmentSince the 1990s, European cities have been developing policies to promote cycling. However, in traditionally car-centric cities, these mobility policies tend not to take account of the gendered aspects of cycling cultures, and more generally of the complexity of gendered mobility trends. Like cars, bicycles are gendered ‘attributes’, emotionally invested objects at the heart of micro-practices that respond to dominant norms of femininity and masculinity. The diversification of bicycles and accessories that has been taking place over the last decade or so has opened the door to new gendered uses and tactics. It democratises cycling, modulates the sporting dimension of cycling and creates new assemblages of bicycles and cyclists. Yet gender norms continue to hinder the development of cycling. My postdoctoral research analyses the tensions that the aesthetic relationship between the body and the bicycle creates in the dominant norms of femininity and masculinity. It describes the assemblages formed by cyclists and their equipment within equipment trajectories that differ in the five Belgian, French and Swiss contexts studied. The original approach of this research analyses the processes of gender construction around cycling from their aesthetic dimension, linking bodily sensibility and affectivity. The presentation will focus in particular on affective investments in cycling objects, customisation practices and the role of bicycles in an ethic of care, especially when escorting children.info:eu-repo/semantics/nonPublishe
Characterization of the N- and C-terminal domain interface of the three main apoE isoforms: A combined quantitative cross-linking mass spectrometry and molecular modeling study
No full textinfo:eu-repo/semantics/inPres
Aesthetic Relationships to Cycling Infrastructure: The Example of Parisian Daily Cyclists
No full textThe paper delves into how cycling transforms our relationship to the world. It investigates the potential of cycling infrastructure design to increase the sentient capacities and the ambient sensibility of mobile actors. Through ride-along interviews with regular utilitarian cyclists in the Paris Region of France, the research uncovers the affective and sensory relationship to cycling infrastructure and the environment. This relationship is characterised by a tension between paradoxical values, traditionally associated with social constructions of differentiated gender categories, of (1) modern emancipation (individualist, conquering) and (2) environmental consciousness (care and attention extending not only to oneself but also to the vulnerability of others, animals and vegetal species). Cycling practices, and the pleasures derived from engaging in the urban environment, challenge and reshape the dominant hierarchy of values in patriarchal society.info:eu-repo/semantics/publishe
Structural Requirements of Synthetic Anionophores for Inorganic Phosphate and Phosphate Esters
No full textThe transmembrane transport of anions is a promising application of synthetic anion receptors. Numerous anionophores have been developed for chloride over the past decades. Despite the biological relevance of phosphate and phosphate esters, very few reports on their transport by synthetic systems exist. Here we report a systematic study on the transport of diphenyl phosphate, phenyl phosphate, and inorganic phosphate by five different anionophores. The transport of these phosphates into liposomes was monitored by fluorescence spectroscopy, 31P NMR spectroscopy, and an ion selective electrode. The results of these experiments showed that diphenyl phosphate is readily transported by most chloride ionophores. The transport of phenyl phosphate is more challenging but can be enhanced by better shielding of the phosphate group. Inorganic phosphate is the most challenging to transport and this was achieved using a macrocyclic anionophore with eight preorganised H-bond donors. These results pave the way for the development of anionophores for inorganic phosphate as well as phosphate esters.info:eu-repo/semantics/publishe