复合扩增mtDNA-HVI和Cyt b片段鉴定混合血痕种属

目的探讨mtDNA-HVI和Cyt b片段复合扩增法鉴定人与动物混合血痕种属的应用价值。方法用chelex-100法从人、牛、猪、狗、兔、鱼、鸡和鼠血痕中提取DNA,复合扩增mtDNA-HVI片段和Cyt b片段,琼脂糖凝胶电泳检测。结果人类在mtDNA-HVI区和Cyt b区分别出现279bp和358bp各一条带,且279bp条带亮于358bp;动物均只有358bp一条带。人与7种动物血痕的检测灵敏度均为3.13ng。检测人与动物混合DNA,灵敏度仍为3.13ng,但358bp条带亮于279bp条带。结论当358bp带明显强于279bp带时,提示检材为人与动物的混合。     

抗疫视阈下中国与"一带一路"沿线国家的安全合作

在2020年新冠疫情的冲击下,国际安全呈现出了传统同盟政治应对非传统安全危害作用有限、单边主义加剧治理赤字、美对华遏制打压愈演愈烈、共建"一带一路"遭遇新挑战的新态势.综合考虑"后疫情时期"的新特征,特别是国际安全的新态势,顺势推进中国与"一带一路"沿线国家开展安全合作是必然选择.安全合作是应对安全挑战的必选路径,"一带一路"是践行安全合作的重要平台,"一带一路"沿线国家也是重要的安全合作伙伴.在危机中育新机,于变局中开新局.中国可以通过把握疫情合作与"一带一路"创造的窗口机遇,管控"中国-沿线国-第三方大国"各方的矛盾分歧,主动运筹,以习近平总书记的重要指导思想为遵循,以建立稳定互信的安全合作关系为导向,以发挥安全治理成效为根本,以力避第三方干扰为要义,推动中国与"一带一路"沿线国家的安全合作,走出一条共建共享共赢的安全之路.     

再谈农业人口与非农业人口的统计问题

“也谈农业人口与非农业人口的统计问题”发表后,农业人口统计资料失真后该怎么办,我国目前到底是农业人口多还是非农业人口多?这成为笔者需向同行和读者认真回答的两个问题。对前者其办法不外乎以下五种:一是取消农业人口与非农业人口的划分,而代之以乡村人口与城镇人口;二是继续让原有的农业人口与非农业人口资料滥竽充数;三是借用联合国粮农组织数据库中有关中国农业人口的资料;四是公开宣布公安系统统计的人口数据是农业户口的人口与非农业户口的人口;五是千方百计搞一套接近实际的中国农业人口与非农业人口资料。前三种办法均不可取,第四种办法从公安系统来说,也许有一定的保留价值,但它无助于农业人口与非农业人口统计问题的解决,所以,只有第五种办法才是科学合理的;对后者,如截至目前,肯定是非农业人口比农业人口多。     

我国高等教育评估专业化新进展综述

评估专业化即评估职业个体和群体逐渐符合专业标准,社会地位和专业地位不断获得提升的过程。随着教育评估实践的逐步开展、评估理论的深入研究,我国高等教育评估专业化的趋势越来越明显。在此,在分析评估专业化基本内涵的基础上,从评估法规建设、理论研究、机构发展、评估机制、专家队伍等方面对我国当前高等教育评估专业化的进展进行了梳理和归纳总结。     

The political process and the use of debt financing by state governments

Empirical evidence offered in this study suggests that decisions by state government officials to effect debt-financed spending depend in part on the state's gubernatorial election cycle. More specifically, the results reveal relative increases in state debt issues in anticipation of elections, and furthermore, they reveal that such increases are more significant for states characterized by high interparty political competition. While theoretical limitations preclude a definitive explanation for these results, the evidence is consistent with a view of state political markets where incumbent parties manipulate public policy so as to enhance the probability of success in pending elections. This insight is significant in that it suggests a relationship between public policy decisions and election cycles in a context heretofore unexplored.     

Changing arenas for agricultural climate change adaptation in Vietnam

Great changes are underway in how climate and agricultural risks are managed in Vietnam. Uncertainties are emerging regarding the role of the state in managing these risks and what this implies for assumptions regarding hoped-for climate change transformations. Local government control is waning in relation to the expanding roles of the private sector and the growing autonomy of farmers themselves. This article presents cases that illustrate the ways that farmers, private investors, and local authorities are responding to climate risk within roles relating to the other risks involving markets, food security, and pressures on common property resources.     

提高财政学课程教学质量的几点思考

财政学课程的教学质量受教材编写质量、教学内容及教学方法三大因素的影响。当前，财政学课程在教材编写、教学内容及教学方法方面存在的问题制约着财政学教学质量的提高，因此，要提高财政学课程的教学质量需要从这三个方面入手采取相应对策。     

当代中国利益集团利益表达行为的特征及趋势

当代中国利益集团表达行为的总体特征为：整体性、不平衡性、群体化、社团化及从注重物质利益向要求政治权利过渡。