We aim to identify the conditions under which social influence enables emergence of a shared opinion orientation among members of an organization over time, when membership is subject to continuous but partial turnover. We study an intra-organizational advice network that channels social...

Nous étudions la perception que certains acteurs du littoral marseillais ont de la gouvernance de la zone, ainsi que de leur logique d'action en mobilisant le cadre d'analyse néo institutionnaliste de l'IAD (Institution Analysis and Design). Pour cela, des entretiens semi directifs ont été...

In this paper we present a model of formation and destruction of informal cooperatives in a population of agents who perform a risky activity and who are heterogeneous in terms of success in their actions. Although some agents have high-risk and others low-risk, our model displays a dynamics...

Les AMAP ont connu une croissance assez linéaire et même assez forte, puisqu'après leur apparition en 2001, elles étaient déjà de l'ordre de 500 en 2006, et environ 1600 en 2013. Très tôt, dès 2001, le réseau s'est structuré sous la forme d'associations régionales dans certaines...

Les circuits courts alimentaires apparaissent aujourd'hui comme une réalité multiforme, en expansion et de plus en plus structurés, que les collectivités cherchent à accompagner dans leur développement. Avant d'envisager la structuration des filières, il s'agit d'identifier des Systèmes...

This paper studies the effect of investor's bounded rationality on market dynamics. In an order driven market, we consider a few-types model where two risky assets are exchanged. Agents differ by their behavior, knowledge, risk aversion and investment horizon. The investor's demand is defined by...

This paper presents a model of influence where agents' beliefs are based on an objective reality, such as the properties of an environment. The perception of the objective reality is not direct: all agents know is that the more correct a belief, the more successful the actions that are deduced...

This paper presents a model of influence where agents' beliefs are based on an objective reality, such as the properties of an environment. The perception of the objective reality is not direct: all agents know is that the more correct a belief, the more successful the actions that are deduced...

This paper presents a model of influence where agents' beliefs are based on an objective reality, such as the properties of an environment. The perception of the objective reality is not direct: all agents know is that the more correct a belief, the more successful the actions that are deduced...