background: mesenchymal stem cells (mscs) are ideal cells for cell and gene therapy. however, the low survival of mscs after transplantation has limited their applications. we aimed to evaluate the expression of cytoprotective genes including nqo1, txnrd1, ho-1, gclc following the over expression of nrf2 in umbilical cord-derived mscs (uc-mscs). methods: 3-5 passages of uc-mscs were cultured. r...

Background: This study aimed to investigate and compare the social skills of students addicted to computer games with normal students. The dependent variable in the present study is the social skills. Methods: The study population included all the students in the second grade of public secondary school in the city of Isfahan at the educational year of 2009-2010. The sample size included 564 stu...

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...

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...

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 ...

Background: Today, due to developing communicative technologies, computer games and other audio-visual media as social phenomena, are very attractive and have a great effect on children and adolescents. The increasing popularity of these games among children and adolescents results in the public uncertainties about plausible harmful effects of these games. This study aimed to investigate the co...