祖孙双单亲比对的匹配概率研究

目的推导祖孙双单亲比对的匹配概率(PMGDS)公式,并以随机模拟法进行验证。方法首先,根据定义推导PMGDS的数学公式,依据此公式在19个基因座上计算PMGDS的数值。其次,以随机模拟法设计实验,在19个基因座上计算PMGDS的模拟值。最后,以模拟值对比公式值的方式,对公式进行实验验证。结果研究获得了PMGDS的数学公式,经模拟实验验证显示出良好的符合。结论祖孙双单亲比对的错判概率较低,具有很好的应用价值。     

The Accuracy and Repeatability of Reconstructing Single Bullet Impacts Using the 2D Ellipse Method

When a bullet punctures a surface, it leaves behind a bullet impact, which can be analyzed in order to determine the origin and trajectory path from which a bullet was discharged using many different scientific methods to reconstruct a shooting scene. The purpose of the research was to test the accuracy and repeatability of reconstructing the impact angle of single bullet impacts using the ellipse method. The research was conducted by firing various calibers of ammunition into drywall panels positioned at varying angles of incidence from 88° until ricochet occurred. This was done in order to determine which caliber type and angle of incidence are most accurate and precise for reconstructing a shooting scene. The study examined four caliber types fired into drywall panels, with 5 repeated shots for each of the 11 angles of incidence (n = 220). Furthermore, 31 participants partook in the study to estimate a bullet impact angle of incidence utilizing the ellipse method. The results show that the best performance (accuracy and repeatability) is seen with the measurements of the 0.45 caliber ammunition. When angle of incidences is low (<64°), the performance (accuracy and repeatability) was seen to be better in all caliber ammunitions. Overall, the data provided for single bullet impacts deposited in drywall show that the ellipse method is useful in providing measurements for most crime scene reconstruction purposes and has also demonstrated that results vary depending on the type of ammunition, firearm, and angle of incidence being examined.     

法医精神病鉴定质量控制对策研究

法医精神病鉴定是一种经验型或技能型鉴定类型,大多数鉴定项目只能依靠鉴定人的经验进行判断,质量控制更显重要。遗憾的是,目前该专业并未像其他法医类鉴定那样实行认证认可制度,质量控制手段不多。为有效保障鉴定质量,必须围绕鉴定意见形成过程的各个阶段或环节进行过程控制与监督,重点关注“人、机、料、法、环”等要素。为此,建议在该行业内逐步恢复认证认可制度,完善质量体系建设,运用好各种内外部质量控制方法,严格把关鉴定人准入,实行鉴定人执业分类管理、强化鉴定人执业能力考核,以规范行业鉴定活动,维护行业司法鉴定的公信力。     

韧性视角下现代城市整体性风险防控问题研究

现代城市因人口聚居、建筑密集、活动复杂而日益成为风险中心,呈现出复合性、联动性、叠加性、扩散性、隐蔽性增大等整体性风险。本文基于韧性视角,引入"韧性城市"概念,剖析了现代城市整体性风险防控实践的六大盲点和弊端,并分别从空间、时间和层级三个维度提出了韧性城市风险治理的范式,梳理出"都市群-城镇带-生活圈"防范风险扩散、"灾前预警-灾中应急-灾后恢复"阻遏风险延递、"宏观搭台-中观定标-微观落地"化解风险叠加的具体策略。     

Lessons from International Multi-Option Referendum Experiences

Referendums are regularly criticised for reducing complex policy decisions to two maximally opposed options. This reduces opportunities for voter expression and can polarise debates. Alternative referendum designs which present more than two ballot options can offer innovative opportunities, but also raise new challenges. We can benefit by learning from previous experiences with multi-option referendum voting. Discussions of such experiences are rare and have often focussed on a limited number of cases. This article provides an overview of over 100 multi-option referendum experiences around the world. It discusses the topics on which they were held and the ballot options that were offered. It then analyses the variety in ballot design in terms of questions posed and voting methods applied. Drawing on the experiences of multi-option referendums, the article concludes with lessons that can be learned in relation to initiating and designing these referendums.     

Augusta Webster’s Mother and Daughter and the only child debate

The enduring debate about family size has roots in Victorian England, most notably in literary works addressing the issue of balancing motherhood and a writing career. One Victorian writer and activist, Augusta Webster (1837–1894), directly addressed the issue of family size in her uncompleted sonnet sequence Mother and Daughter (1895), which she began when her only child was a newborn. In this posthumous series of 14-line poems, Webster defends her decision to have one child and, in doing so, challenges popular assumptions that only women with multiple children could be considered ‘complete’, socially-acceptable mothers. Despite her efforts, however, and despite the rising popularity of one-child families, the results of numerous scientific studies and the lingering critiques of mommy blogs make it clear that challenges to mothers of ‘onlies’ remain.     

甘肃省禁毒方略探讨

作为西部地区之一的甘肃省,禁毒工作在取得了显著成效的同时面临的形势依然严峻,禁毒斗争依然任重道远。为了使甘肃省禁毒斗争取得新的突破,本文探讨了甘肃省禁毒工作面临的新形势,并提出了进一步开展禁毒工作的建议。     

问题教学法的实践与思考

运用问题教学法需要技巧并坚持一定的原则,只有这样才能取得良好的教学效果,学生才能从中受益。     

刑侦画像造型训练方法的研究

刑侦画像是依据目击者的记忆语言描述,利用素描等手法模拟刻画犯罪嫌疑人相貌特征的技术手段。刑侦画像造型训练方法的研究,为刑侦画像技术的教育实践工作探索科学有效的培养训练方法,以适应我国公安刑侦工作的实际需要。     

天然药物化学课程教学方法的探讨

随着当前对天然药物开发研究的不断深入,天然药物化学课程的重要性也越来越受到重视。而传统的天然药物化学教学方式多为教师讲授,学生被动地听、甚至靠死记硬背,学生的学习兴趣没有得到激发,效率不高,普遍反映枯燥难学。因而全面提高天然药物化学的学习水平和教学质量具有重要意义。为此,作者结合自己的教学经验谈一些感受。