We present a model of communication network formation in which links’ strengths are endogenously determined by individual incentives. Agents are endowed with a fixed amount of resource which they can distribute as they want in directed links. Individuals capture benefits from both direct and indirect access to others, in a way that takes into account the strength of each link. The wheel archite...

Following T. H. Chan, we consider the problem of approximation of a given rational fraction a/q by sums of several rational fractions a1/q1, . . . , an/qn with smaller denominators. We show that in the special cases of n = 3 and n = 4 and certain admissible ranges for the denominators q1, . . . , qn, one can improve a result of T. H. Chan by using a different approach. 2000 Mathematics Subject ...

Making use of a repeated distribution game experiment, we investigate how African peasants distribute and enforce water access in irrigation schemes. Two questions are addressed. First, we investigate the influence of scarcity by comparing a treatment with abundant water availability with a treatment where water is insufficient for both players to reach a minimum production threshold. Second, w...

in farming activities, various resources and inputs are utilized to produce agricultural products.. one of the most important goals of agricultural managers and programmers is to assess the optimal resource allocation for designing an appropriate cultivation pattern. mathematical programming is a common approach to achieve the optimal pattern. in this study, the two approaches of fuzzy de-novo ...

The exhaustible-resource monopsony problem provides a basis for understanding the dynamic relationship between resource importers and suppliers. We find that the mere presence of a substitute supply creates a time-inconsistency problem for the monopsonist. When the buyer can commit to delaying the arrival of the substitute, he obtains a substantial reduction in resource prices but not enough as...

This paper examines the properties of two Internet pricing systems – a flat rate and a usage-based pricing system – in terms of the social welfare, by generalizing the theory advocated by the scholars. This study contributes not only to the systematic generalization of the theory but also to the examination of the waste of resource innate in the flat rate tariff. We found that the superiority b...