股骨有限元模型的建立及损伤生物力学验证

目的 探讨利用Mimics软件将CT医学影像数据转化为有效的股骨有限元模型的可行性,为股骨骨折的生物力学研究提供模型基础.方法 利用16排螺旋CT扫描股骨,将扫描结果以DICOM格式导入Mimics软件中,生成股骨三维模型,并对模型网格划分、材料赋值.在LS-DYNA软件中分别施加1000N的垂直载荷、进行三点弯曲试验...     

论司法鉴定体制建立的依据及进一步改革的重点

《决定》施行已经5年。总体上应当肯定,但也有值得总结和检讨之处。除保留了侦查机关所属的鉴定机构外,《决定》基本上关闭了国有资本进入司法鉴定领域的大门,这是值得研究的。建立什么样的司法鉴定体制应当有四方面的依据：司法鉴定机构的本质属性;不同诉讼活动的特点;不同国家的国情;成熟国家的经验教训。以此考察我国现行司法鉴定的体制,应当建立由国家出资的公立性鉴定机构,其与侦查机关所属的鉴定机构以及社会鉴定机构一并构成我国司法鉴定三支队伍,各有分工或侧重,共同担负起我国司法鉴定的任务。     

Small- and Medium-Sized Businesses’ Growth Expectations and Financial Performance in Latvia: Does Ethnicity Matter?

Applying regulatory focus theory, this paper investigates the impact of both ‘initial confidence’ and ‘exactness of growth expectations’ on the financial performance of small and medium-sized firms in Latvia. Drawing on a data set based on repeated survey design, we explore the complexity of this relationship empirically. Our overall findings suggest that when controlling for other relevant factors, such as actual growth, entrepreneurs having higher growth expectations perform significantly better in terms of profitability. In addition, education has a strong modifying effect. The impact of high growth expectations on subsequent profit performance is stronger for entrepreneurs with a lower level of education. Moreover, these effects are amplified by ethnicity. They are much stronger for ethnic Russian entrepreneurs compared with ethnic Latvian entrepreneurs.     

数字化技术在法医颅脑损伤生物力学分析中的应用

颅脑损伤是法医学鉴定的重点和难点,传统的颅脑损伤生物力学分析存在技术手段陈旧、分析数据模糊等问题。基于影像学的虚拟解剖技术和有限元分析技术具有非侵入、细节还原充分和力学数据准确等优点,在颅脑损伤生物力学分析中引入先进的数字化技术可提高鉴定证据客观性,推动学科的发展。     

Buying stolen goods: the ambiguity in trading consumer-to-consumer

This study investigates the buying of stolen goods in Denmark. The study consists of a self-report survey based on a representative sample of the general Danish population (n = 2311) and six focus group interviews consisting of both informants experienced with buying stolen goods and of those with no experience (n = 37). The survey showed that 4.8% had bought stolen goods, while 15.7% were uncertain whether they had bought stolen goods. Young people, males, and unemployed were more likely to purchase stolen goods. No clear correlation between income and buying stolen goods was found. Focus groups suggest the buyers of stolen goods did not buy stolen goods because they could not afford legitimate products. We recommend targeting consumers not interested in buying stolen goods with information about how to avoid such activity.     

Computational Approach to Identify Different Injuries by Firearms

Complications arise in the analysis of gunshot wounds to the maxillofacial region, when neither the projectile nor the gun is found at the crime scene. We simulated 5‐ and 15‐cm firing distances at a human mandible to investigate the external morphology of entrance wounds based on fire range. The ammunition models, .40‐caliber S&W, .380‐caliber, and 9 × 19‐mm Luger, were constructed with free‐form NURBS surfaces. In a dynamic simulation, projectiles were fired against mandibular body 3D model at 5 and 15 cm. All entrance wounds presented oval aspect. Maximum diameter and von Mises stress values were 16.5 mm and 50.8 MPa, both for .40‐caliber S&W fired at 5 cm. The maximum energy loss was 138.4 J for .40 S&W fired at 15 cm. In conclusion, the mandible was most affected by .40‐caliber S&W and morphological differences were observable in holes caused by different incoming projectile calibers fired at different distances.     

从领导干部的成长要求把握市级党校干部教育的着力点

市级党校的工作特点要求党校干部教育应适应领导干部的成长要求,为振兴地方的经济发展培养人才。当前,市级党校的干部培训存在着机制建设滞后制约了学员学习的主动性、培训理念与现实需求脱节影响了培训的针对性、师资队伍建设滞后制约了培训的实效性等问题,必须从体制、机制上进行改革,激发教师教学的潜力和领导干部的学习主动性。     

家兔眼玻璃体液21例元素含量PMI关系的研究

目的寻找一种精确推定PMI的方法。方法应用电感耦合等离子体质谱(ICP-MS),系统研究了家兔死后96h内眼玻璃体液21种元素含量与PMI的相关性。结果眼玻璃体液Co、Mo、Cd、Sb、I、Pb、Bi、Li共8种元素与PMI无关。K、Mg、Fe、P、Na、Al、Ca、Ti、Ni、Cu、Zn、Sr、Ba共13种元素含量与PMI有关。结论眼玻璃体液K、Mg、Fe、P、Na、Al、Ca、Ti、Ni、Cu、Zn、Sr、Ba共13种元素与PMI有关。为研究人尸体眼玻璃体液元素与PMI的关系奠定了选择指标的基础。     

全面提升自来水水质势在必行——由“饮水热”论及城市供水行业的当前任务

"饮水热"的出现,提出一个十分现实的问题:究竟靠什么来满足人们的饮水需求.城市自来水的主导地位不能动摇,自来水必须达到打开龙头就能直接饮用.针对城市供水目前存在的薄弱环节,提出两个层次实施目标.全面提升自来水水质,是城市供水行业的当前任务.     

论新时期群体性治安事件的原因与对策

新时期,群体性治安事件的发生是社会各方面矛盾的集中体现;探其诱因,大多与群众的现实利益和需要相关;公安机关处置群体性治安事件,仅仅是起到治标的作用,而依靠全社会的力量,运用政治、经济、行政、法律、文化等手段,从宏观上缓解社会矛盾,避免矛盾的积聚,才是正确处理群体性治安事件的治本之道。