论大学生群体变化对思想政治教育的挑战

对大学生群体变化的状况进行了研究,指出目前我国的大学生中,独生子女数量增多,以及贫困生群体凸显。大学生群体的这种变化给大学思想政治教育提出了新的挑战,即独生子女大学生较难融入群体生活,贫困大学生和富裕家庭出身的大学生不易平等相处。针对这种挑战,应当采取的思想政治教育的思路和对策为：加强大学生的合群性教育,注重大学生的平等人格教育,把宿舍作为大学生思想政治教育的重要阵地。     

Differential effects of behaviour,propensity to migrate and recruitment season on glass eels and elvers’ growing performance

Abstract –  Social interactions impact growth rate of animals in different ways such as direct or indirect competition for food and/or territories. In this study, behaviour of glass eels and elvers was described throughout three trials of 9 days spread out over 3 months. The impact of recruitment season (spring and autumn runs) and glass eels’ propensity to migrate (assessed thanks to an experimental sorting) on individual growth was studied. Overall, spring elvers were more aggressive and active than autumn elvers while autumn fish were more gregarious and reached a higher specific growth rate than spring fish. At the individual level, gregariousness and swimming, respectively, promote and impair growth rate. In addition, skinny individuals and individuals with high motivation to get food achieved better growth rate suggesting catch‐up growth processes. These findings may help in clarifying the complex relations between behaviour, growth, river basin colonisation and future sex (which is environmentally determined in eel) and then contribute to the urgent need of scientific knowledge to guide the stocking programme of this endangered species.