A biomechanical reconstruction of a wound caused by a glass shard--a case report

During the course of a criminal trial, an investigating pathologist is commonly asked how much force was required to produce an injury. This subjective opinion is based on the pathologist's previous experience of dealing with wounds inflicted with similar weapons. However, in the case of stab wounds inflicted by broken glass, it is unlikely that two glass fragments would be physically similar. In the case studied, two theories were examined: that a wound resulted from a thrown glass fragment or that it had been caused as a stab injury by the glass held in the bare hand. The investigation involved quantifying the energy required for human tissue penetration, comparison of sharpness, a biomechanical analysis of throwing actions and testing of the hypothesis that if the glass shard were used as a stabbing implement it would result in a cut to the hand.The investigation utilised a scientific methodology that reduced the need for speculative (though informed) opinion from the pathologist by producing quantitative results.     

Correlation between saw blade width and kerf width

Most studies of saw marks have focused on morphological characteristics and their utility in identifying saws suspected to have been utilized in cases of criminal dismemberment. The present study examined the extent to which metric analysis may be used to correlate saw blade measurements with minimum kerf widths (MKWs). A sample of 56 partially defleshed white‐tailed deer (Odocoileus virginianus) long bones was utilized as proxy for human remains. The long bones were cut using a variety of commercially available saws, including 11 manual‐powered and 5 mechanical‐powered saws. A total of 496 false start kerfs (FSKs) were created. Two experiments were performed, with the first test examining the MKWs of FSKs produced on specimens that were restrained using a bench vise, while the second test analyzed the MKWs of FSKs produced on minimally restrained specimens. Statistical analysis using Hierarchical Linear Modeling (HLM) indicated a positive relationship between saw blade width (mm) and MKW, with blade width (p < 0.001) and the overall difference between the mechanical‐ and manual‐powered saws (p = 0.029) tested, reaching statistical significance. A comparison of MKWs produced using manual‐powered saws on restrained and minimally restrained bones suggests that restraint condition (p = 0.009) has a statistically significant effect. In comparisons of MKWs to blade widths, the average ratio for mechanical‐powered saws is 18.7% greater than the average ratio for manual‐powered saws. While the mode of the ratios was 1.42, thus supporting the general rule that MKW does not exceed 1.5 times blade width, multiple individual ratios did surpass 1.5.     

性别角色刻板印象与女性发展的民族学研究

性别角色是民族心理研究中的重要内容,它总是带有明显的社会、文化、民族等的印记。本文就性别角色作了民族学与心理学的分析,本文就性别角色作了民族学与心理学的分析,尤其是对性别角色获得的文化与民族因素、对性别角色刻板印象作以剖析,以期对民族性别角色获得及克服性别刻板印象进行分析研究。     

完善农村社会养老保险政府责任机制的探讨

新型农村社会养老保险制度的政府责任存在不少问题,表现在农民养老的历史债务偿还机制、农民参保激励机制、基础养老金调整约束机制、不同层级间政府财政责任约束机制、政府养老金最低待遇承诺机制和补偿机制度、隐形成本的化解机制缺失等方面,因此,需要构建政府责任供给机制,不断完善农村社会养老保险制度。     

制度执行力:概念辨析及构建要素

制度执行力就是指制度本身所具有被执行落实的强制力、执行效力,以及相关组织在执行相关制度时的执行力量和执行效力。制度执行力与政府执行力、政策执行力之间具有交叉重叠的关系。制度执行力的构建,需要从完善制度、执行元制度、执行主体、执行行动、执行要件等方面着手。     

以公平为导向的职称评审制度构建研究

公平的制度安排是专业技术人员对职称评审制度的理性诉求,但在现实职称评审运作中,存在不少问题,造成了职称评审制度的公平缺失。构建以公平为导向的职称评审制度,应在职称评审的规则与程序、专家库建设、评委会管理、业绩证据认定和评审过程监督等方面作出制度设计。     

灾害社会工作:现状、问题与对策——基于汶川地震灾区社会工作服务开展情况的调查

5.12汶川特大地震发生后,我国社会工作机构和工作者第一次大规模介入抗震救灾和灾后重建,在提升灾区自我发展、探索社会工作嵌入灾区发展的模式、推动社会工作机构的健康发展等方面取得了一些成绩。但是,灾区社会工作在合法性、保障性、长期性、规范性、有效性、发展性等方面都还存在问题,因此,应通过加强灾区社会工作的制度化建设,加大灾区社会工作的经费投入,促进灾区社会工作本土化。     

In the land of OZ: designating opportunity zones

Public Choice - The Tax Cuts and Jobs Act of 2017 allowed governors of the fifty states to designate low-income areas as a “Qualified Opportunity Zone” (QOZ), which entitled the...