The main purpose of this study is to discuss the behaviors of using mobile games and the causes of mobile game addiction among Chinese university students. Based on uses and gratifications theory, stress and self-control, these three aspects were used to analyze the motivations of mobile games use among university students. The study used a multi-stage sampling method and a sample of Chinese university students from eight departments of four universities in Beijing, Shanghai, Xi'an and Jinan was selected. 907 questionnaires were distributed and the number of valid questionnaires was 416. The results show that social pressure and academic pressure are positively related to mobile game addiction, self-control ability is negatively related to mobile game addiction.
In this paper, a micromechanical model based on Generalized Method of Cells(GMC) for predicting stress-strain behaviors of polymer-matrix composites is presented. Improved Bodner-Partom viscoplastic model is incorporated into GMC to describe nonlinear mechanical behavior of composites. On this basis, strain rate and fiber volume fraction(FVF) influence on nonlinear behaviors of composites are discussed. The results show that strain rate influences on stress-strain behaviors of composites in inelastic region can be clearly discerned. Moreover, FVF tends to clearly increase stiffness behaviors of polymer-composites.
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