高校实质影响力及其形成——以法国顶尖高等专科学院为例

主要世界大学排名体系和法国高等专科学院以及国家军团之间的不相符表明,目前的大学排名体系反映的多是高校"名义"而非"实质"影响力。高校实质影响力指对国际事务及国家和社会生活的影响力,通过杰出毕业生的职业和职务得到体现,其形成要素包括塑造个人影响力的教育体系和将个人影响力转化为集体影响力的校友网络,名义影响力和实质影响力相辅相成。为实现中国高校的可持续发展并进一步参与国际竞争,中国政府和高校需共同努力构建名义和实质影响力适当匹配的高校影响力体系。

加重对外资并购安全审查的几点思考

美国作为世界上最早确立外资并购安全审查的国家,其审查制度几经发展日臻完善,特别是关于审查对象的认定更为合理系统,为我国尚处于起步阶段的外资并购安全审查新规的完善提供了重要借鉴:明晰并购主体概念,细化并购主体分类,对外国政府投资主体持谨慎态度;兼采定性和开放式列举方式,以控制权为核心区别并购行为的性质实行分别管辖;实行以实质影响力为主的外资控制标准,以利于国家安全风险的科学合理评估。

Experimental Investigation of Boiling Two-phase Flow Instability of Nitrogen in a Vertical Tube

Boiling flow instability of nitrogen in a vertical tube is experimentally investigated in the present study. The experiments reveal that pressure has a significant effect on the characteristics of the heat flux-mass flux type boiling flow instability.First.the pressure has strong effects on both the developing time and the fluctuation amplitude.Especially increasing pressure leads to decrease the fluctuating amplitude of mass flux.Then,the mass flux evolving curves under different pressures feature out a shape like a leaf.The characteristics of the heat flux-mass flux type boiling flow instability under lower pressure are very complicated,however,with increasing pressure,this type of instability is gradually suppressed.