A systematic analysis of the effects of spatial extension on the equilibrium frequency of cooperators and defectors in 2× 2 games is presented and compared to well mixed populations where spatial extension can be neglected. We demonstrate that often spatial extension is indeed capable of promoting cooperative behavior. This holds in particular for the prisoner’s dilemma for a small but importan...

The category of von Neumann correspondences from B to C (or von Neumann B–C–modules) is dual to the category of von Neumann correspondences from C to B via a functor that generalizes naturally the functor that sends a von Neumann algebra to its commutant and back. We show that under this duality, called commutant, Rieffel’s Eilenberg-Watts theorem (on functors between the categories of represen...

The High School Timetabling Problem consists in assigning timeslots and resources to events, satisfying constraints which heavily depend on the specific institution. This work deals with the problem of the ongoing III International Timetabling Competition (ITC), which includes a diverse set of instances from many educational institutions around the world. We proposed an approach based on Simula...

aim and background: insecure attachment style is one of the important effective factors in many mental disorders. the aim of this study was to compare the positive, negative and disorganized schizotypal characteristics in secure, avoidance and anxiety attachment patterns among students of tabriz university, iran. methods and materials: in this cross-sectional descriptive study 300 students (150...

forgiveness and empathy are factors which are influential in improving the relationships between people, themselves can be affected by various factors in turn. the purpose of this research was to investigate the relationship between the styles of attachment to god and forgiveness and empathy among female students in the city of qom. 250 students were selected from the city of qom by cluster sam...

following the changes in the paradigm of urban studies in recent years, sustainability has become an increasingly important issue in the neighborhood’s planning and designing. however, this concept has originally been developed for american and european neighborhoods’ planning, it could also be customized for other neighborhoods’. additionally, in the neighborhood scale, the quality parameter f...