Forensic Application of Analytical Mechanics in Fatal Fall From a Height

Fatal fall from a height initiated with a swinging motion on the sagittal plane of the victim's body is examined. Method of analytical mechanics is adopted to establish the functional relations between the swinging angle of the body and the force needed to sustain the body until release, and the amount of the horizontal displacement that would occur after release. The analysis is applied to support an expert opinion presented in a criminal court in which two accused were convicted of murder for dropping a female victim from a bridge. The results indicate that it is unlikely for the body to locate as recorded by the police investigation report in the case. This study demonstrates that a straightforward mechanical analysis can be utilized to examine uncommon falling scenarios.     

法医学尸体检验职业防护指南(建议稿)

法医工作者的职业暴露风险极大,案件现场及尸体上的有毒有害物质、高致病性微生物以及利器、骨折等因素均可能给法医带来身心伤害甚至生命危险。随着经济社会发展,法医的工作环境已经较过去显著改善,但是针对个人防护的重视程度仍需提高。近年来公共卫生事件频发,给法医职业防护带来新的挑战,迫切需要借鉴生物安全领域的先进技术和防护理念,以满足新形势下法医工作的需要。本指南立足当前法医职业防护的实际需求,从暴露风险、防护分级、应急处置等角度阐述,希望能为制定法医职业防护相关标准提供参考,以指导法医工作者开展个人防护工作,为提升法医职业化水平和身心健康提供帮助。     

自我与职业的双重生产:基于网络主播的数字化表演劳动实践

伴随电商直播时代的到来,青年带货主播的劳动激励机制从"礼物打赏"转变为"带货提成",其工作形态也从情感劳动转向数字化表演劳动。数字化表演劳动是指主播通过"养号"、组团、打造"人设"、激活消费者体验等方式,创造出一种区别于线下的购物剧场,从而将粉丝的观看量转化为消费者的订单量。由于主客观方面的限制,基于数字化表演劳动的直播带货会形成不稳定的短期化就业。但"离场"后的主播并不完全切断与直播的联系,而是将数字化表演劳动后置为一种能随时"返场"的就业选择,以此更主动、更具弹性地应对不确定的未来生活。在此背景下,我们需要创造精准服务各类青年数字劳动者的良好制度环境,促使其成为壮大数字产业的生力军和推进数字治理的新力量。     

海外知识产权诉讼应诉基金设立的思考

随着当前经济贸易的发展,国内企业在海外频遭知识产权纠纷。本文试图探讨一种成立海外知识产权应诉基金的模式,以行业协会为首合力应对国外强大的知识产权压力。     

从追求宏大理论到走进学校日常生活——对教育学科学化进程的一种系谱学描述

福柯的系谱学对权力／知识的分析对人-社会科学的研究范式与书写方式产生了深刻影响。教育学实践领域也受其冲击而发生了话语的转换。如果我们从系谱学的角度来反思教育学寻求学科化的历史进程，就会扩大对学科这一概念的理解：作为权力／知识实践方式的学科制度不仅是科学化的标志，也是控制现代生活的策略与技术。因此，对作为一门学科形式存在的教育学知识的寻求未必是适当的或必要的。目前，我们似乎更应该走进学校日常生活，由此迈向具体的教育实践。这或许是教育学走出迷茫之路的一条可能的途径。     

反恐应急指挥地理信息系统研究设计

目前恐怖袭击猖獗,建立具有反恐应急指挥作用的公共安全系统已愈发重要。本文从系统研发的角度,阐述系统的数据库建设及主要功能,最后就系统建设需要重点考虑的问题进行了讨论。     

鸡肾型传染性支气管炎病毒的分离鉴定

从陕西省榆林市某蛋用种鸡场疑似肾型传染性支气管炎病鸡中分离到了1 株肾型IBV(定名为YL 04),并对分离病毒进行了血凝性、血凝抑制性、致病性、鸡胚矮小化、电镜特征等生物学特性鉴定及S1基因5′端的RT PCR鉴定。结果表明,该分离株经10 g/L胰酶处理后的各代病毒尿囊收集液均可凝集鸡红细胞;标准阳性血清可特异性地抑制其凝集性;可复制出与自然发病相同的病例;病毒传代物有明显的致鸡胚矮小化作用;透射电镜下可见有近似球形、直径100 nm左右的冠状病毒粒子;用RT PCR方法扩增到1 条373 bp的目的片段,其核苷酸序列与IBV CQ/01/2004株序列的同源性达98%。     

IDENTIFYING THE PSYCHOLOGICAL FACTORS THAT MEDIATE THE ASSOCIATION BETWEEN PARENTING PRACTICES AND DELINQUENCY*

Past research has largely ignored the developmental changes within the child that account for the association between parenting and risk for delinquency. We used structural equation modeling and data from a longitudinal study of several hundred African‐American families to test the contentions of various theories regarding the sociocognitive and emotional factors that mediate the impact of parental behavior on a youth's risk for delinquency. Our findings largely supported the theories. The impact of monitoring/discipline was indirect through low self‐control and acceptance of deviant norms, whereas the effect of hostility/ rejection was indirect through low self‐control, hostile view of relationships, and acceptance of deviant norms. These two dimensions of parenting were no longer related either to affiliation with deviant peers or to conduct problems once the effects of these psychological characteristics were taken into account; the impact of these parenting practices was completely mediated by these four cognitive/affective variables. Contrary to expectation, however, these psychological factors did not mediate any of the relationship between caretaker involvement in antisocial behavior and child conduct problems.