Animal Scavenging and Scattering and the Implications for Documenting the Deaths of Undocumented Border Crossers in the Sonoran Desert,

Since 1998, over 5500 people have died while attempting to cross the U.S.–Mexico border without authorization. These deaths have primarily occured in the Arizona desert. Despite the high volume of deaths, little experimental work has been conducted on Sonoran Desert taphonomy. In this study, pig carcasses were used as proxies for human remains and placed in different depositional contexts (i.e., direct sunlight and shade) that replicate typical sites of migrant death. Decomposition was documented through daily site visits, motion-sensitive cameras and GIS mapping, while skeletal preservation was investigated through the collection of the remains and subsequent faunal analysis. Our results suggest that vultures and domestic dogs are underappreciated members of the Sonoran scavenging guild and may disperse skeletal remains and migrant possessions over 25 m from the site of death. The impact of scavengers and the desert environment on the decomposition process has significant implications for estimating death rates and identifying human remains along the Arizona/Mexico border.     

法医学二代测序STR分型准确度与测序深度的关联性评估

目的利用实验数据对法医学二代测序STR分型测序深度与分型结果准确度的关联性进行评估。方法使用商业化基因组DNA制备单一来源和混合的DNA样本,以Thermo Fisher公司的25重早期测试试剂盒进行目的STR片段扩增,每种扩增产物分别使用4种不同的序列标签平行建库,并控制标记每一种序列标签的文库上机量依次占一张Ion 318芯片的1/4、1/8、1/16、1/32。经Ion PGMTM基因测序仪测序,以及Ion Torrent SuiteTM软件进行数据分析;同时对庞敬博等人发表的基于相同试剂盒和测序仪检测的95名中国汉族无关个体的6928条等位基因、影子峰和噪音序列进行测序深度统计分析,寻找测序深度与STR分型准确度的关联性。结果各基因座测序深度随文库上样量减少而呈明显下降趋势。对于单一来源样本,每张芯片上样不超过8个均一化文库可实现全部基因座的完整分型;对于1∶20比例的混合DNA,每张芯片上样不超过4个均一化文库时,未发现微量组分的等位基因丢失。人群数据测序深度统计显示,该体系基因座间存在不均衡性,有必要针对各基因座分别设定分析阈值参数。结论测序深度与法医学STR分型结果的准确性密切相关,各基因座最低测序深度与平均测序深度的比值可作为设定分析阈值的重要参考指标。本研究确定的单张芯片上样数量仅适用于本实验体系,但相关实验设计和方案可供其他实验体系开展类似工作参考。     

Élites in Omsk

A French sociologist provides a detailed analysis of the politics, economics, and political elite of Omsk oblast' in Western Siberia. Analysis covers oil politics, reactions to the August 1998 financial crisis, relations with Moscow, the role of entrepreneurs in politics, and the communist and nationalist oppositions. Focus is on the role of the governor and his relations with diverse political forces. The article also examines the gap between formal institutions and actual social and political practices.     

基于SNA视角的政府投资项目合谋关系研究

政府投资项目中腐败案件和工程事故的背后往往存在着合谋问题,合谋主体之间通过社会关系网结成合谋网络。本文从社会网络视角研究合谋关系结构特征,以上海"11.15"大火为例通过SNA分析政府投资项目中各利益主体之间的合谋关系及其利益关系。研究表明合谋关系网与利益关系网之间存在不一致性,合谋关系网中建设单位与总承包单位居于核心位置,合谋网络呈现多个中心性质。在结构洞位置,关键中间人通过收取建桥费获得高额合谋收益,而其他结构洞位置行为人通过收取过桥费获得合谋收益。合谋网络的核心结构行为人具有跨项目合谋特性,而其他行为人合谋具有单个项目性质。本文实现了微观具体主体行为与宏观关系网络相结合,拓展了社会网络分析方法在合谋领域的应用,丰富了对合谋关系的认识,强调在治理合谋问题时在关注合谋利益的同时,应关注关系网络。     

三道防线筑起铁壁铜墙——乐山市多警联勤、多层防控网络体系显神威

近年来,各类违法犯罪案件出现上升势头,且违法犯罪人员趋向低龄化、智能化,手段越来越残忍。 人民群众需要安居乐业,西部大开发需要良好的治安环境。如何有效地防制和遏止犯罪,还我湛湛青天朗朗乾坤?严峻的问题摆在乐山警方面前。 必须保证西部大开发战略的顺利实施,必须保证市委、市政府构建经济强市、旅游大市战略决策的顺利进行！——乐山市公安局新任领导班子的承诺掷地有声。     

网络极化现象研究——基于四个中文BBS论坛的内容分析

本文试图把"极化"这一概念引入网络政治传播的考察中,主要针对四个中文BBS论坛(强国深水、猫眼看人、天涯杂谈和新浪杂谈)政治讨论中的极端化态度分布状态进行描述与比较。结果显示,态度极化现象与论坛群体和特定的议题类别紧密相关。其中激进派聚集的论坛更容易出现极化;涉及"政府"的议题更容易在激进的论坛中出现极化,而在温和派占据主流的论坛则呈现非极化状态。同时,发帖积极性越高的ID越容易出现态度极化的现象;而且,网民的意见同质化程度越高,则群体极化的程度也就越高。     

Innovative regulations,incomplete contracts and ownership structure in the water utilities

Using an incomplete contract framework, we analyse new forms of regulation and private participation in public services. This paper explains contractual efficiency in the absence of financially guaranteed investments in public private partnerships. The example of a number of African countries underlines how a series of national, normative law reforms can give rise to innovations in approaches to regulation. This new hybrid form of regulation, inspired by a French regulation approach combining commission regulation and franchise bidding, could be more effective than previous approaches to regulation, in the sense of being more stable and more closely aligned with stakeholder expectations. This approach to regulation would appear to be more efficient economically, while integrating the objectives of solidarity tariffs and social water access connections. Based on these analyses, our results show (1) the impact on the robustness of new lease contracts on financing constraints, and (2) the advantages of Asset Owner Companies that reconcile explicit commitments and special purposes. We demonstrate that this achieves optimum efficiency by encouraging parties to determine jointly the optimal level of costs and investment. In addition, the mechanism fosters discussion about the possibility of institutionalizing Asset Owner Companies by predetermining the distribution of risk in lease contracts.     

经验法则与接近正义--以民事诉讼为进路

经验法则是法官依照日常生活中所形成的反映事物之间内在必然联系的事理作为认定待征事实根据的有关法则.它包括从一般的生活常识到关于一定职业技术或科学专业上的法则.经验法则具有盖然性程度的差异性和内容上的无限性,法官运用经验法则可以发现事实和应用法律,创造善的规则体系,更好地实现接近正义.