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Impact of Online Promotional Game Mechanics on Word of Mouth Behaviors
No full textViral campaigns widely use online promotional games. Although antecedents of the extrinsic value of participation are discussed in the literature, few studies have focused on the intrinsic value of playing a promotional game. This study examines two dimensions of online game control: the amount of skill required and the ability to influence the odds of winning. A new typology of online promotional games is then proposed and tested using a sample of 146 real online promotional games. When a game mobilizes the players’ skill, word of mouth increases.nonouirechercheInternationa
Dans quelle mesure les préférences individuelles contraignent-elles le développement du marché de l'assurance dépendance ?
No full textDans un contexte de vieillissement de la population, différents scenarii sont envisagés pour réformer l'organisation et le financement de la prise en charge des personnes âgées dépendantes. La place de la prévoyance individuelle dans le financement de la dépendance est à ce titre largement débattue. À l'heure actuelle, malgré des restes à charge potentiellement conséquents, peu d'individus disposent d'une couverture assurantielle. Cet article vise à enrichir la littérature existante en évaluant dans quelle mesure les préférences observées dans la population limitent cette couverture. Nous mobilisons pour cela l'enquête Patrimoine et préférences vis-à-vis du temps et du risque (Pater) de 2011. À la demande de la Fondation Médéric Alzheimer, la vague 2011 de l'enquête Pater a intégré un questionnaire complémentaire relatif à la perception du risque dépendance et aux comportements d'assurance (Pated). L'enquête Pater permet la construction de scores quantifiant quatre dimensions des préférences susceptibles d'influencer la perception du risque et la probabilité de souscrire une assurance parmi les individus percevant le risque : la préférence pour le présent, l'aversion au risque, l'altruisme familial et le goût présumé pour l'aide informelle. Les résultats des estimations montrent le rôle significatif de chacune de ces dimensions dans la demande d'assurance. Néanmoins, même au sein d'une population présentant les préférences les plus favorables à la souscription d'une assurance, les simulations montrent que le taux d'équipement ne dépasserait pas 20 %. Le recours accru à la prévoyance individuelle par le biais d'une généralisation des couvertures assurantielles privées apparaît donc difficilement envisageable à moins d'une forte évolution de l'offre d'assurance ou d'une régulation publique incitant ou contraignant la souscription d'une assurance.nonouirechercheNationa
Selection into Migration within a Household Model: Evidence from Senegal
No full textThis paper intends to fill the gap between individual selection models and household approaches to migration. It presents a theoretical model to account for household-based migration decisions and derives its implications on migrant selection within the household. The predictions are tested on unique multi-sited and matched samples of Senegalese migrants and their origin household, using a three-step estimation procedure based on an extension of the Roy-Dahl model of mobility and earnings. Our results suggest that expected remittances, along with earnings differentials between host and home countries, play a major role in shaping intra-household selection patterns.nonouirechercheInternationa
When Cutting Dividends Is Not Bad News: The Case Of Optional Stock Dividends
No full textThis paper provides new evidence on dividend policy by studying optional stock dividends, a mechanism that allows firms to cut cash payouts without a negative market reaction. We find that highly leveraged firms with limited cash holdings and large institutional ownership are more likely to offer optional stock dividends to their hareholders. These firms are the most committed to paying dividends, and optional stock dividends provide them with an opportunity for a stealth cut in dividends during economic downturns. Shareholders overwhelmingly approve optional stock dividends at general meetings with the majority favoring stock dividends over cash dividends. Further, in contrast to dividend cuts, shareholders do not view optional stock dividends as bad news. Our results support the monitoring explanation of optional stock dividends and show that shareholders value a firm’s ability and willingness to pay dividends, even if the final cash payout is reduced.nonnonrechercheInternationa
Dialoguer plus, mais sur quoi ? Les régulations d’entreprise en matière d’emploi, de formation et de conditions de travail en temps de crise
No full textÀ partir des données des enquêtes « Relations professionnelles et négociations d’entreprise » (REPONSE) 2004-2005 et 2010-2011 et d’enquêtes monographiques réalisées dans quinze établissements français aux relations sociales contrastées, cet article part du constat, à première vue paradoxal dans un contexte de crise, d’une intensification du dialogue social au niveau de l’entreprise. Interrogeant le sens et la portée de cette intensification, en partie liée aux développements de la « négociation administrée », il analyse les recompositions actuelles des régulations de la relation d’emploi. Nous montrons ainsi comment la difficulté accrue à mettre en débat les questions d’emploi observée face à la crise conduit à un repositionnement partiel et à un investissement croissant autour des enjeux de conditions de travail, qui contraste avec une implication routinière mais rarement stratégique sur la formation.The article draws on data from the 2004-2005 and 2010-2011 REPONSE surveys into professional relations and branch-level bargaining and full-length studies of fifteen French businesses characterised by a range of labour-management relations. Its initial premise is based on an observation that may seem paradoxical: social dialogue within the companies increased in times of economic crisis. It explores the meaning and scope of the increase, which arose in part as a result of developments in so-called “administered” bargaining, analysing the process by which employment relation regulations are currently undergoing reconfiguration. It demonstrates how the increased difficulty in opening up employment matters for debate in times of economic crisis leads to a partial repositioning and increasing investment in issues surrounding working conditions. This contrasts with the commitment to training, which, though standard, is rarely considered strategically.nonouirechercheNationa
A multi-objective interactive system for adaptive traffic control
No full textIn this paper, we consider the problem of adaptive traffic control on single junctions with the three following objectives to be minimized: the total waiting time and the number of stops for private vehicles, and a public transport criterion. This problem being modeled as a multi-objective mixed integer linear program, we provide an interactive system based on an adaptive reference point approach. This system adapts, in real-time, priorities given to the different criteria according to the traffic situation. Formal guarantees are provided on the behavior of our system. A comparison with a standard semi-adaptive system on a simulated traffic shows that it provides significantly better solutions.nonouirechercheInternationa
Les organes et les procédures de passation des contrats d'achat public
No full textnonouinon-rechercheNationa
Note sur TC, Aéroports de Paris, 18.10.2000
No full textCahier droit des affaires-Jurisprudencenonouinon-rechercheNationa
MARIAGE. Organisation de la communauté conjugale et familiale : communauté de résidence. (Art. 212 à 215 C. civ. : fasc. 30)
No full textnonouinon-rechercheNationa
The Lazy Matroid Problem
No full textin Springer series Lecture Notes in Computer Science, vol. 8705This article introduces the lazy matroid problem, which captures the goal of saving time or money in certain task selection scenarios. We are given a budget B and a matroid M with weights on its elements. The problem consists in finding an independent set F of minimum weight. In addition, F is feasible if its augmentation with any new element x implies that either F + x exceeds B or F + x is dependent. Our first result is a polynomial time approximation scheme for this NP-hard problem which generalizes a recently studied version of the lazy bureaucrat problem. We next study the approximability of a more general setting called lazy staff matroid. In this generalization, every element of M has a multidimensional weight. We show that approximating this generalization is much harder than for the lazy matroid problem since it includes the independent dominating set problem.nonouirechercheInternationa