Balanced Environmental Games

Focus is here on coalitional games among economic agents plagued by aggregate pollutions of diverse sorts. Defecting players presumably pollute more than others. Then, granted convex preferences and technologies, the core is proven nonempty. In fact, under natural assumptions, a specific, computable core solution comes in terms of shadow prices on the said aggregates. Such prices may, in large part, implement the cooperative treaty by clearing a competitive market for emissions.Cooperative Games; Pollution Control Adoption Costs; Distribution Effects; Employment Effects

Menumbuhkan Moderasi Beragama Sejak Dini Melaui Permainan (Game) Kepramukaan

Abstract Understanding Moderation of religion for students increasingly needs to be improved in their understanding, amidst the increasingly swift currents of globalization. The tendency of students to play games that lead to individualistic and fatalistic needs to be balanced with games that are outdoor, recreational and educative. Educational outdoor games provide opportunities for students to learn cooperation, cohesiveness, tolerance, honesty, discipline, hard work, increase creativity, independence, democracy, curiosity, national spirit, respect, leadership, cooperation, environmental care, social care , responsibility, even religious. Internalization of An-Nahdliyah's societal values, such as: tawassuth and i'tidal, tasamuh, tawazun and Amar ma'ruf nahi munkar can be done with games specially designed for that. The formation of the Ma'arif Nahdlatul Ulama Scout Community Unit and the establishment of the implementation of compulsory extra-curricular scouting education in formal education environments in primary and secondary education, further strengthens the effectiveness of this game.   Keywords: Religious Moderation, Scout Games, NU social attitude. &nbsp

Size Monotonicity and Stability of the Core in Hedonic Games

We show that the core of each strongly size monotonic hedonic game is not empty and is externally stable. This is in sharp contrast to other sufficient conditions for core non-emptiness which do not even guarantee the existence of a stable set in such games.Core, Hedonic Games, Monotonicity, Stable Sets

Cooperation under Interval Uncertainty

Classification: JEL code C71Cooperative game theory;Interval uncertainty;Core;Value;Balancedness

Scoring dynamics across professional team sports: tempo, balance and predictability

Despite growing interest in quantifying and modeling the scoring dynamics within professional sports games, relative little is known about what patterns or principles, if any, cut across different sports. Using a comprehensive data set of scoring events in nearly a dozen consecutive seasons of college and professional (American) football, professional hockey, and professional basketball, we identify several common patterns in scoring dynamics. Across these sports, scoring tempo---when scoring events occur---closely follows a common Poisson process, with a sport-specific rate. Similarly, scoring balance---how often a team wins an event---follows a common Bernoulli process, with a parameter that effectively varies with the size of the lead. Combining these processes within a generative model of gameplay, we find they both reproduce the observed dynamics in all four sports and accurately predict game outcomes. These results demonstrate common dynamical patterns underlying within-game scoring dynamics across professional team sports, and suggest specific mechanisms for driving them. We close with a brief discussion of the implications of our results for several popular hypotheses about sports dynamics.Comment: 18 pages, 8 figures, 4 tables, 2 appendice

Simple Priorities and Core Stability in Hedonic Games

In this paper we study hedonic games where each player views every other player either as a friend or as an enemy. Two simple priority criteria for comparison of coalitions are suggested, and the corresponding preference restrictions based on appreciation of friends and aversion to enemies are considered. It turns out that the first domain restriction guarantees non-emptiness of the strong core and the second domain restriction ensures non-emptiness of the weak core of the corresponding hedonic games. Moreover, an element of the strong core under friends appreciation can be found in polynomial time, while finding an element of the weak core under enemies aversion is NP-hard. We examine also the relationship between our domain restrictions and some sufficient conditions for non-emptiness of the core already known in the literature.Additive separability, Coalition formation, Core stability, Hedonic games, NP-completeness, Priority

Procurement and supplier diversity in the 2012 Olympics

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