background: nowadays computer games are one of the main entertainments for children and adolescents. there are different results about positive and negative impacts of these games. the aim of this study was the survey of relationship between playing computer games and aggression in guidance school students of kermanshah city in 2012. methods: in this cross sectional study, 573 student selected ...

Nowadays computers are increasingly being incorporated into school curriculums and serious games are occupying the educational games markets. This article addressed the integration of serious games as tools for learning and teaching English in Iranian schools to zero-beginner students. An experiment was concluded using Computer Assisted Language Learning (CALL) to investigate the effectiveness ...

Solution concepts in cooperative games are based on either cost games or benefit games. Although cost games and benefit games are strategically equivalent, that is not the case in general for solution concepts. Motivated by this important observation, a new property called invariance property with respect to benefit/cost allocation is introduced in this paper. Since such a property can be regar...

In this paper, bi-matrix games are investigated based on L-R fuzzy variables. Also, based on the fuzzy max order several models in non-symmetrical L-R fuzzy environment is constructed and the existence condition of Nash equilibrium strategies of the fuzzy bi-matrix games is proposed. At last, based on the Nash equilibrium of crisp parametric bi-matrix games, we obtain the Pareto and weak Pareto...

With advances in spine surgery, congenital spine deformity can now be treated with corrective fusion and osteotomy, even in young children. In these patients, the spine has various complications of vertebral anomalies and congenital fusion. A successful and safe outcome of corrective surgery requires evaluation by imaging preoperatively. Congenital spinal anomaly has conventionally been evaluat...

We associate to any game G, in the sense of Set Theory, a variant of it we call bck(G). We show through examples that many relevant non-constructive proofs in Algebra and Combinatorics can be interpreted by recursive winning strategy over some game of the form bck(G). We further support this claim by proving that games of the form bck(G) are a sound and complete semantic for a sub-classical log...

Background: Addiction to computer (video) games in adolescents and its relationship with educational progress has recently attracted the attention of rearing and education experts as well as organizations and institutes involved in physical and mental health. The current research attempted to propose a structural model of the relationships between parenting styles, mothers’ occupation status, a...

One of the recurring themes in the theory of stochastic games is the interplay between discounted games and mean-payoff games. This culminates in the seminal paper of Mertens and Neyman [12] showing that mean-payoff games have a value and this value is the limit of the values of discounted games when the discount factor tends to 1. Note however that optimal strategies in both games are very dif...