We study an online model of fair division designed to capture features of a real world charity problem. We consider two simple mechanisms for this model in which agents simply declare what items they like. We analyse axiomatic properties of these mechanisms such as strategy-proofness and envy freeness. Finally, we perform a competitive analysis and compute the price of anarchy.

In this paper we investigate parallel searching on m concurrent rays. We assume that a target t is located somewhere on one of the rays and that a group of m point robots has to reach t. Furthermore, we assume that the robots have no way of communicating over distance. Given a strategy S we are interested in the competitive ratio which is deened as the ratio of the time needed by the robots usi...

This paper studies competitive equilibria in economies characterized by the presence of asymmetric information, where non-exclusive contracts are traded on competitive markets and agents may be privately informed over their payoff. For such economies competitive equilibria may not exist when contracts trade at linear prices. We show that (non-trivial) competitive equilibria exist, under general...

One aim of laboratory investigation in neonatal jaundice is to prevent kernicterus from occurring. Estimation of the bilirubin-binding capacity of serum is an important measurement along with total bilirubin determination. With a convenient Sephadex competitive binding procedure, KERNLUTE provides information on whether or not the neonate's bilirubin-binding capacity has been exceeded. Further ...

International donors, long-standing supporters of decentralization reforms in developing countries, often face the challenge of aligning program assistance to the great variety of country governance settings in which many operate. This paper presents a framework for assessing the implications of governance and institutional context for a range of programming challenges, with particular referenc...

We analyse the effects of competition in education. We identify the benefits and drawbacks of forcing students to compete themselves during their learning process, and investigate a number of features a competitive learning activity should have in order to motivate students, and improve their academic performance. More specifically, by using a simple Web system, we conduct a competition underta...

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Using a field experiment in China, we study whether migration status is correlated with attitudes toward risk, ambiguity, and competitiveness. Our subjects include migrants and non-migrants. We find that, migrants exhibit no differences from non-migrants in risk and ambiguity preferences elicited using pairs of lotteries; however, migrants are significantly more likely to enter competition in t...

Exercising is an activity in which the presence of others can motivate an individual to surpass his / her own limits. In recent years, technology has changed the way we carry out these activities. User commitment has been shown to be dependent on, among other, peer pressure. The introduction of challengeable virtual opponents broadened the spectrum of possibilities, enabling users to be motivat...

Proximity matrices like kernels or dissimilarity matrices provide nonstandard data representations common in the life science domain. Here we extend fast soft competitive learning to a discriminative and vector labeled learning algorithm for proximity data. It provides a more stable and consistent integration of label information in the cost function solely based on a give proximity matrix with...