Les Societes Co-Operatives de Consommation.

Minimisation de la consommation d'énergie dans les réseaux ad hoc

An ad hoc network is a collection of wireless devices forming a temporary network independently of any administration or fixed infrastructure. The main benefits of this new generation of mobile networks are flexibility and their low cost. Wireless devices have maximum utility when they can be used “anywhere at anytime”. However, one of the greatest limitations to that goal is the finite power s...

Un protocole de routage à basse consommation d'énergie pour les MANETs

Maximizing network lifetime is a very challenging issue in routing protocol design for Mobile Ad-hoc NETworks (MANETs), since mobile nodes are powered by limited-capacity batteries. Furthermore, replacing or recharging batteries is often impossible in critical environments (e.g. battlefields, disaster areas, etc.). Energy consumption was considered for a long time equivalent to bandwidth consum...

Member Value in Co-operatives

Until today there is a research gap considering the question, what motivates a member to enter or leave a co-op, resp. what are the reasons to stay in a co-operative. The majority of studies about this topic mainly focus on economic factors and the rational behavior of the member. However, co-ops also have other purposes not associated with financial goals. The presented paper is proposing a ne...

Les rongeurs de la region de Tehran

The impact of purchasing co-operatives

The proportion of hospital turnover linked to purchasing co-operatives will rise from the present 45% to 90% in 2010, according to the study Future Relevance and Consequences of Hospital Purchasing Cooperatives for Medical Technology Suppliers in Germany, commissioned by the German medical technology association BVMed from the consultancy firm Simon Kucher & Partners. ‘The bundling together...