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Decomposing Berge graphs and detecting balanced skew partitions

Trotignon, Nicolas - HAL - 2006

We prove that the problem of deciding whether a graph has a balanced skew partition is NP-hard. We give an O(n9)-time algorithm for the same problem restricted to Berge graphs. Our algorithm is not constructive : it certifies that a graph has a balanced skew partition if it has one. It relies on...

Persistent link: https://www.econbiz.de/10010750514

A structure theorem for graphs with no cycle with a unique chord and its consequences

Trotignon, Nicolas; Vuskovic, Kristina - HAL - 2008

We give a structural description of the class C of graphs that do not contain a cycle with a unique chord as an induced subgraph. Our main theorem states that any connected graph in C is a either in some simple basic class or has a decomposition. Basic classes are cliques, bipartite graphs with...

Persistent link: https://www.econbiz.de/10010750604

"How About Giving My Things Away Over The Internet? " When Internet Makes It Easier To Give Things Away

Guillard, Valérie; Bucchia, Céline Del - HAL - 2012

The present article looks at the meaning of gift-giving when it is performed via free online recycling websites. Underpinned by research on the difficulties inherent to giving, our paper illustrates how these websites remove the difficulties inherent in giving to kith, kin or to charities.

Persistent link: https://www.econbiz.de/10010898884

Economic Properties of Recognized Intangibles under Domestic Accounting Standards: Evidence from European Capital Markets

Casta, Jean-François; Ramond, Olivier; Escaffre, Lionel - HAL - 2008

This study investigates whether European firms reporting under domestic GAAPs exhibit major differences while examining the relationship between their economic (financial, operating and competitive) performance and their recognized intangible investment (RII). Using a five-European-country...

Persistent link: https://www.econbiz.de/10011025567

Pourquoi les consommateurs n'achètent-ils pas d'occasion ? Une analyse exploratoire

Bezançon, Marjolaine - HAL - 2012

diffèrent des dimensions de la motivation. De plus, les entretiens suggèrent une distinction entre freins relatifs aux produits …

Persistent link: https://www.econbiz.de/10010548431

Corruption in Open-Source Software Organisations: A Theoretical Framework

Walther, Matthias - HAL - 2010

instrument influences the motivation in a negative way. Assigning the types of people joining the open source community on Frey … / Osterloh's motivation types makes an examination of the effects of the instruments possible and shows that only intrinsic …

Persistent link: https://www.econbiz.de/10010821353

Créer de la valeur par le crowdsourcing : la dyade Innovation-Authenticité

Lebraty, Jean-Fabrice; Lobre, Katia - HAL - 2010

Cet article concerne une nouvelle modalité d'externalisation : le crowdsourcing. Il vise à répondre à la question suivante : comment une opération de crowdsourcing permet-elle de créer de la valeur pour une organisation ? Dans le cadre d'une approche interprétative, une étude...

Persistent link: https://www.econbiz.de/10008788923

Quelle opérationnalisation de l'implication pour concilier théories de la motivation et théories de l'implication ?Réflexion en faveur d'une nouvelle échelle de mesure de l'implica...

Demery-Lebrun, Marc - HAL - 2006

'implication comme une composante de la motivation. Pour rendre effectives les opportunités ainsi offertes, il est important que les … multi-dimensionnelle. La première composante est relative au déclenchement de la motivation, et traduit les formes …. , 1993 ; Blau, 2003. La deuxième composante appréhende la direction de la motivation à travers la planification dans le …

Persistent link: https://www.econbiz.de/10008789096

La motivation des salariés et la performance dans les entreprises

Mucha, Laura - HAL - 2010

'efficience économique pour l'entreprise. Par conséquent, nous pouvons nous demander quelles sont les techniques de motivation adoptées par … les entreprises et si la motivation des salariés représente un véritable levier de performance pour les entreprises. …

Persistent link: https://www.econbiz.de/10008789582

Biased  Information  and  Effort

Rosaz, Julie - HAL - 2012

We study the impact of information manipulation by a principal on the agent's effort. In a context of asymmetric information at the principal's advantage, we test experimentally the principal's willingness to bias (overestimate or under-estimate) the information she gives to her agent on his...

Persistent link: https://www.econbiz.de/10008790485