个性化、多元化教育与创新性人才的培养--哈佛、耶鲁的本科课程制度及其启示

在规模化教育过程中实现个性化与创新性人才的培养,哈佛、耶鲁等美国高校在本科课程设置与培养制度方面的经验值得借鉴。通过课程的自由选择与组合,学生形成各不相同的知识结构与创新意识,并且提供制度路径来鼓励学生自我探索和设计新的课程与未知专业;融入人性化与人文关怀,注重个性化与多元文化的感悟和体验。各高校直接面向市场与社会,其竞争与不拘一格使美国的多元化教育与创新性人才更呈现千姿百态的格局。     

ASSESSING NEIGHBORHOOD AND SOCIAL PSYCHOLOGICAL INFLUENCES ON CHILDHOOD VIOLENCE IN AN AFRICAN‐AMERICAN SAMPLE*

The present study examines the extent to which neighborhood and social psychological influences predict childhood violence among 867 African‐American youth. The results showed that neighborhood affluence was the only neighborhood‐level variable to exert a significant influence on childhood violence. Furthermore, childhood violence was significantly related to social psychological influences, such as adopting a street code, associating with violent peers, parental use of violence, and quality parenting. Overall, the findings suggested that simply living in a violent neighborhood does not produce violent children, but that family, peer, and individual characteristics play a large role in predicting violence in childhood.     

日本幕末开国对策探析

19世纪中叶,德川幕府统治下的日本面临着欧美列强的军事威胁和外交压力,处于开国抑或攘夷的十字路口。通过考察欧美国家对日本的冲击以及日美交涉过程,可以看出,开国与开港给日本带来了积极的影响,但由于不平等条约的签定,尽管近代日本并未遭遇中国那种割地赔款的命运,却使近代日本具有了殖民地的特征。     

从NAFTA到USMCA:投资争端解决机制的变化、成因及启示

2020年7月生效的《美国—墨西哥—加拿大协定》在投资争端解决机制上一改《北美自由贸易协定》下偏重对投资者权利保护的“新自由主义”精神,回归对国家规制权能的重视。在适用对象、适用争议、适用程序上作出变化与革新。全球价值链收缩及“慢球化”、投资争端解决机制的内在合法性危机以及对东道国规制权力的削弱,是国际投资争端解决机制发生变化的深层次经济、法律与政治动因。《美国—墨西哥—加拿大协定》投资争端解决机制的变化与革新将进一步推动“卡尔沃主义”的回归以及加剧国际投资法体制内部的碎片化趋势。中国应积极支持及推进投资争端解决机制改革,使其发挥正面作用,同时辩证吸收“卡尔沃主义”的合理因素,积极探索诸如前置协商、投诉与帮助以及调解等解决投资者与东道国之间投资争议的多元渠道。     

非洲猪瘟CD2v胞外区基因片段的真核表达及其多克隆抗体的制备

本研究利用真核表达系统表达非洲猪瘟病毒的CD2v胞外区蛋白,研究其免疫特性,制备多克隆抗体并研究其性质,为研发特异性单抗奠定数据基础。以非洲猪瘟病毒Wuhan2019-1株(GenBank:MN393476.1)为模板,合成CD2v胞外区基因序列,并将其克隆至真核表达载体pCAGGS载体中,获得pCAGGS-CD2v胞外区重组质粒。经酶切和测序鉴定后,将重组质粒转染293F细胞,获得重组胞外CD2v蛋白(简称His-CD2v)。用Ni-NTA柱纯化His-CD2v,并以此为抗原免疫BALB/c小鼠制备多克隆抗体,利用ELISA和间接免疫荧光对多克隆抗体进行鉴定。结果显示,(1)His-CD2v融合蛋白在293F中以可溶形式表达,SDS结果显示,相对分子质量约为35~80 ku的弥散带;(2)融合表达的His-CD2v能与阳性血清反应,与对照不反应;(3)HisCD2v制备的多抗效价最高达1∶218700,且能与阳性血清竞争性结合CD2v抗原。上述结果表明,His-CD2v融合蛋白的表达及其多抗的成功制备,为进一步筛选CD2v特异性单抗及研制竞争ELISA试剂盒,为非洲猪瘟感染与免疫鉴别方法的建立奠定了坚实的基础。     

Gender Differences in Self-Perceptions and Academic Outcomes: A Study of African American High School Students

There is increasing divergence in the academic outcomes of African American males and females. By most accounts, males are falling behind their female peers educationally as African American females are graduating from high schools at higher rates and are going on to college and graduate school in greater numbers. Some have suggested that school completion and performance is associated with how students feel about themselves. The purpose of this study was to explore gender differences in the relationship between self-perceptions and 2 academic outcomes among a sample of 243 African American high school sophomores. The results suggest that, overall, females are more favorably oriented toward high school completion. Both male and female students with more positive self-perceptions have stronger intentions to complete the current year of high school. Higher grade point averages were more strongly associated with greater self-efficacy for females than for males. Given these findings, increased attention to educational programming, societal messages, and future research is warranted.     

撒哈拉以南非洲的人口问题与可持续发展

在非洲人口与经济发展关系的研究中,世界最不发达的撒哈拉以南非洲具有其典型性,深入研究其人口增长与经济发展的严重失衡、人口的科学文化素质低下特别是高文盲率和人口健康素质低劣特别是因艾兹病泛滥而导致的人口高死亡率及其它一系列问题,可以明显地看到这些问题对经济发展产生的诸多不利影响,以及它们对该地区的可持续发展带来的严峻挑战。     

非洲联盟面临的挑战

非洲面临最重要的挑战就是如何避免并解决冲突,恢复和巩固和平。持久和平是非洲应对其他挑战的先决条件。非洲联盟的建立显示出非洲人民应对挑战的决心,其目标就是要消除贫困,维护和平,使非洲各国走上经济持续发展的道路。中国是最早向莫桑比克提供援助的国家之一,非洲国家视中国为伙伴和盟友,中非合作的前景广阔。     

新思想库与奥巴马政府的亚洲政策决策——以新美国安全研究中心为例

在美国对外政策决策体系中,思想库在政策理念创新、人才储备、打造政策辩论平台以及教育和引导公众等方面具有非凡的作用。新近兴起的新美国安全研究中心对奥巴马政府的对外政策影响巨大。该中心的亚洲政策研究强调务实的态度,注重美国对亚洲事务的重新"参与",倡导强化和升级美国在亚洲的联盟关系,推动美国积极介入地区多边制度,其政策建议通过"旋转门制度"等对当前美国的亚洲政策决策产生了深刻影响。     

Negotiating normative premises in democracy promotion: Venezuela and the Inter-American Democratic Charter

ABSTRACT

This article analyses negotiations on democracy promotion by looking at the case of the Inter-American Democratic Charter. It argues that Venezuela contested the concept of representative democracy during the Charter negotiations, advancing the notion of “participatory and protagonist democracy” and that, even if it was unsuccessful in its demands, the country contributed to deepening the debate on the concept of democracy, on which there is far from worldwide consensus. The article suggests that the main drivers of the negotiation process and the final agreement were domestic political changes in Venezuela, specific features of the negotiations, and the structural position of Venezuela in the field of democracy promotion in the global and regional contexts, which were, at the time, favourable to a compromising attitude to conclusion of the Charter, even if not to the concept of democracy.