The symmetric and asymmetric Choquet integrals on finite spaces for decision making

In this paper, we give a mathematical analysis of symmetric and asymmetric Choquet integrals in the view of decision making in a finite setting. These integrals present two ways of dealing with negative integrands. The analysis is done with the aid of the Möbius and interaction transforms, this last one having an interesting interpretation in multicriteria decision making (MCDM). The last part of the paper shows the application of these two integrals in MCDM.     

Social choice with analytic preferences

Arrow's axioms for social welfare functions are shown to be inconsistent when the set of alternatives is the nonnegative orthant in a multidimensional Euclidean space and preferences are assumed to be either the set of analytic classical economic preferences or the set of Euclidean spatial preferences. When either of these preference domains is combined with an agenda domain consisting of compact sets with nonempty interiors, strengthened versions of the Arrovian social choice correspondence axioms are shown to be consistent. To help establish the economic possibility theorem, an ordinal version of the Analytic Continuation Principle is developed. Received: 4 July 2000/Accepted: 2 April 2001     

The free circulation of Individuals between the European Community member states: The practical implications for social security schemes

Freedom of movement in an integrated European Economic Area created the need to coordinate social security legislations by means of complex regulations. Improving their application calls for innovative solutions based on the experience of ISSA member institutions, ILO standards and the initiative of non-governmental organizations. These solutions are also of interest to institutions in states — even non-European states — linked to the Community by bilateral or multilateral conventions. The main objective is to simplify and speed up administrative procedures, notably for the award of pensions to migrants, given the desirability of identifying them and reconstructing their working careers at the earliest opportunity. Teleprocessing must gradually replace the international circulation of forms, facilitating in particular the provision of medical care during a temporary stay. Recipients'effective access to benefits can also be improved through the personal intervention of liaison offices, the use of migrants'own language and the aid of social services.     

Interplay between Friends' Aggression and Friendship Quality in the Development of Child Aggression during the Early School Years

The aim of this study was to investigate the unique and combined role of friendship quality and friends' aggression in regard to the persistence of young children's physical aggression from kindergarten to grade 2. The sample included 1555 children (808 girls) assessed annually using teacher ratings. Two theoretical perspectives (i.e., the social learning and the social bonding perspectives) served as frameworks to guide the analyses and interpret the results. In line with the social learning perspective, friends' aggression was related to a significant increase in children's physical aggression. However, in line with the social bonding perspective, good friendship quality played both a compensatory and a protective role, by, respectively, reducing children's initial level of physical aggression and by mitigating, albeit marginally, the associations between friends' and children's physical aggression. These results suggest that fostering a positive relationship between friends in the early school years may decrease physical aggression even if the friends are aggressive.     

Divorce Alimony: An Estimation of its Determinants and of its Amount

ABSTRACT The purpose of this paper is to study the determinants of the attribution of alimony to women after divorce, and to examine the main determinants of its amount. Three different theoretical models of marriage may influence judges'decision in attributing alimony: an investment-type marriage, a trade-type marriage or an association-type marriage. An estimation of the corresponding dichotomic variable is run using data we collected from six French courts. Results show that the probability of obtaining alimony is strongly increased if the divorce is declared to be the husband's fault; labour market participation of the ex-wife exerts a negative effect, as well as a decrease in relative wages of husband and wife. Finally, it appears that the amount of alimony is independent of the amount of child support.     

Parent–professional interviews in child protection: Comparing viewpoints

Several studies have analysed the parent–professional relationship in the field of child protection. Although social workers tend to privilege interviews when working with families and view them as a means through which to build ties, few studies have focused on these interviews. To analyse how professionals and parents position themselves, we chose to focus on the content of these interviews and on the associated interactions. To this end, we recorded 13 parent–professional interviews after receiving the consent of the concerned parties. After analysing the interviews, we asked volunteer social workers and parents to analyse their own recorded interviews. Our results confirm the asymmetric nature of the parent–professional relationship. They show that professionals' viewpoints carry more weight than those of parents. They also underscore professionals' lack of openness and the strategies parents implement to cope with this power imbalance. Lastly, our results open new avenues for reflection on the evolution of practices that may enable professionals to better take into account families' viewpoints.     

A Bitcoin-inspired infinite-server model with a random fluid limit

The synchronization process inherent to the Bitcoin network gives rise to an infinite-server model with the unusual feature that customers interact. Among the closed-form characteristics that we derive for this model is the busy period distribution which, counterintuitively, does not depend on the arrival rate. We explain this by exploiting the equivalence between two specific service disciplines, which is also used to derive the model’s stationary distribution. Next to these closed-form results, the second major contribution concerns an asymptotic result: a fluid limit in the presence of service delays. Since fluid limits arise under scalings of the law-of-large-numbers type, they are usually deterministic, but in the setting of the model discussed in this paper the fluid limit is random (more specifically, of growth-collapse type).     

Du machisme au coparentage: pour une révolution des mentalités en Italie

Cet article décrit les processus législatifs et judiciaires complexes nécessaires pour que le droit au coparentage s'impose dans le droit du travail italien. Après avoir expliqué que le système juridique italien a jusqu'à présent assimilé la protection de la famille à la seule protection de la femme et de la maternité, l'auteur décrit l'évolution législative qui a permis de reconnaître aux pères un rôle fondamental dans l'éducation des enfants. Il montre ensuite que la jurisprudence, en retenant une interprétation moderne des principes inscrits dans la loi, contribue à vaincre la résistance à une telle évolution dans une société encore marquée par la domination masculine.     

Parents’ perspectives of social support and social cohesion in urban contexts of diversity

Although provisions for young children are increasingly considered as ideal places to foster an inclusive and socially just society by embracing issues of social support and social cohesion, there is no in-depth understanding of the role these provisions can play in enabling supportive and cohesive encounters in contexts of diversity. Even more striking is the absence of parents’ voices in this discussion. Based on an analysis of qualitative interviews with 18 parents who use childcare services in urban contexts of diversity, our findings show the relevance of ephemeral contacts with diverse people that could offer bridging opportunities in terms of social connectedness to familiarise within diversity while decoding the other in urban contexts of diversity. However, neither bonding nor bridging contacts appear as self-evident. Our research shows that the role of childcare services might be vital in creating light and temporal communities as the prerequisite for social cohesion to flourish, in both individual as well as collective dimensions.