14岁青少年手腕骨发育的研究I．男生骨龄标准的制定

目的研究我国当前青少年骨发育状况,制订专用于法医学推断男性刑事责任年龄14岁的骨龄标准。方法以湖南冷水江地区青少年为对象,按照纳入标准,选取14岁±3个月的健康男性中学生103名,拍摄其左手腕部后前位X线片。选择手腕骨15个部位,按照统一标准进行观察、测量,采用最大百分比法确定发育等级标准,建立骨龄评估方法,以单盲法进行验证。结果除第一掌骨、近节第四指骨骨骺发育等级为部分闭合外,其他均为未闭合;对于第四、五掌骨和近三指骨,不足14岁组以未闭合为主,已满14岁组以部分闭合为主。各个观察部位骨骺横径宽于干骺横径。30例的验证结果准确率为80.0%。结论根据发育等级特征及测量学方法建立骨龄评估标准可行,可望得到推广。本文以刑事责任年龄14周岁为对象,制订法医学专业骨龄推断标准,并引入测量学方法,辅助推断年龄。     

烧骨组织形态变化及DNA技术在个体识别中的应用

烧骨在火灾、焚尸、交通、爆炸等案件和事故的检材中具有特殊的地位。通过对不同条件焚烧下烧骨组织形态及DNA变化规律的研究,可为法医实践中烧骨的种属鉴定、性别及年龄判定提供准确的依据和标准,同时可利用残存的基因位点对烧骨残块进行个体识别和同一认定。烧骨DNA的提取方法及检测技术也在不断探索和改进。本文对烧骨在形态学、组织学和分子生物学水平研究进展以及烧骨评测的方法、技术进行概述,旨在为法医实践及进一步研究提供新的方法和思路。     

基于企业诚信视角的食品安全问题研究

近年来,食品安全事故层出不穷,不少学者认为中国食品市场的监管体制不顺、监管法律不完善是食品安全事故多发的主要原因。诚然,这些都是不争的事实。然而,生产者承担的不安全成本过低,导致食品行业普遍缺乏诚信也是问题食品接连不断被生产出来的一个不容忽视的因素。因此,有必要研究抽样误差、检验误差、追溯误差对食品生产者成本的影响,进而不断创新监管工具和监管思路、改进监管技术,让不安全食品的生产者直接承担不安全食品所带来的成本,以此促使生产者为食品安全付出更多努力。     

从受教育权看人权的不可分割性

根据人权的代际理论,受教育权先后被人们归属于公民权利与政治权利,经济、社会和文化权利乃至于第三代人权.事实上,受教育权沟通了三代人权并具有一种综合的权利属性.可见,各类人权不仅在价值上相互依赖,而且在权利属性上相互重合.我们不宜以人权代际理论等理论上的分类方法为依据来延缓对经济、社会、文化权利以及第三代人权的保护,要对之保持一种积极的态度.     

Automated Texture Recognition of Quartz Sand Grains for Forensic Applications*

Quartz sand surface texture analysis has been automated for the first time for forensic application. The derived Basic Image Features (BIFs) provide computer-generated texture recognition from preexisting data sets. The technique was applied to two distinct classification problems; first, the ability of the system to discriminate between (quartz) sand grains with upturned plate features (indicative of eolian, global sand sea environments) and grains that do not exhibit these features. A success rate of grain classification of 98.8% was achieved. Second, to test the ability of the computer recognition system to identify specific energy levels of formation of the upturned plate surface texture features. Such recognition ability has to date been beyond manual geological interpretation. The discrimination performance was enhanced to an exact classification success rate of 81%. The enhanced potential for routine forensic investigation of the provenance of common quartz sand is indicated.     

The tussle with trust: Trust in the news media ecology

This article offers a conceptual exploration of the changing notion of trust and distrust in today's news media ecology. Central is the question whether the relationship between the traditional media actors, media organisations, journalists and news users, can be increasingly characterised by distrust. Do we really notice a decline in trust in the news media? And moreover, are these feelings of distrust grounded? In order to answer these questions, we look at the changing economic, technological and societal context and how this might explain the strained relationship between these actors. We find that to a large extent the goals of the media actors diverge or even conflict. Mutually bridging these goals is difficult as they boil down to ideological and normative choices. This requires us to reconsider our ways of looking at trust. Therefore, this article's central argument is that a trusted relationship between the media actors is unlikely to result from a definitive settlement between the actor's conflicting goals. Rather, maintaining a trusted relationship is likely to become a matter of constant renegotiation. For this renegotiation to succeed, transparency and integrity are key. We find inspiration in the recent work of Solove (2001), Nissenbaum (2004) and Mansell (2008, forthcoming) to take a different, more contextual approach towards the notion of trust. As regards the relationship between news organisations and users, we suggest these norms should be negotiated in a balanced and transparent way, giving users an equal say in the process. The relationship between journalists and news users should be guided by a mutual interest in truth telling, whereby users are not only merely seen as consumers, but also as potential contributors to news stories. Policy makers in turn should act as facilitators of such spaces of renegotiation.     

Bone age assessment: the applicability of the Greulich-Pyle method in eastern Turkish children

The aim of this study was to investigate whether or not the Greulich-Pyle (GP) method is adequate for Turkish children. A group of 767 individuals (425 girls and 342 boys) between 7 and 17 years were studied. Bone age (BA) from plain radiographs of left hands and wrists by GP standards was estimated. The total mean differences between BA and chronological age (CA) for girls and boys were found to be 0.20 and -0.13 years, respectively. There were significant differences between BA and CA in age groups 7-, 8-, 10-, 11-, 12-, 13-, 15-, and 16-year-olds for girls and 7-, 10-, and 12-year-olds for boys. The results of this study suggest that the mean differences between BA and CA are low enough to be of no practical significance, and thus, for the time being unless any other methods will be proved more useful, this method could be used in all age groups.     

利用放射性核素骨显像检查鉴别鼻部骨折新旧程度回顾性法医学分析

目的 利用放射性核素骨显像检查鉴别鼻部骨折的新旧程度.方法 对48例疑似陈旧性鼻部骨折伤者放射性核素全身骨显像、局部断层骨显像及CT融合图像在鼻部骨折处放射性分布、浓聚情况的分析,鉴别鼻部骨折的新旧程度.结果 48例中8例放射性核素全身骨显像、局部断层骨显像及CT融合图像在鼻部骨折处显示放射性分布增高、浓聚区,诊为新鲜骨折,评定为轻伤;40例在鼻部骨折处未见明显异常放射性分布增高、浓聚区,诊为陈旧骨折,与本次外伤无因果关系.结论 放射性核素骨显像检查在鉴别鼻部骨折新旧程度方面可得到满意结果.     

表面肌电在肢体肌肉功能评估中的应用及研究进展

如何定量的评估肌肉在主动活动和姿势诱发反射下他动时的肌肉功能状态对于法医临床鉴定工作具有十分重要的意义。表面肌电图,通过从肌肉表面的电极引导,记录神经肌肉系统活动时肌电活动,可以定量的反映肌肉的功能状态,其在肢体功能评估中具有重要的使用价值。综述了表面肌电在肢体主动活动和姿势诱发反射下肢体功能评估中的应用及研究进展。     

Do bone elasticity and postmortem interval affect forensic fractographic analyses?

Forensic fractographic features of bone reliably establish crack propagation in perimortem injuries. We investigated if similar fracture surface features characterize postmortem fractures. Experimentally induced peri- and postmortem fractures were used to assess if fractographic features vary as bone elasticity decreases during the postmortem interval (PMI). Thirty-seven unembalmed, defleshed human femoral shafts from males and females aged 33–81 years were fractured at varying PMIs with a drop test frame using a three-point bending setup and recorded with a high-speed camera. Vital statistics, cause of death, PMI length, temperature, humidity, collagen percentage, water loss, fracture energy, and fractography scores were recorded for each sample. Results showed that fractographic features associated with perimortem fractures were expressed in PMIs up to 40,600 accumulated degree hours (ADH), or 60 warm weather days. Hackle was the most consistently expressed feature, occurring in all fractures regardless of ADH. The most variable characteristics were wake features (78.4%) and arrest ridges (70.3%). Collagen percentage did not correlate strongly with ADH (r = −0.04, p = 0.81); however, there was a strong significant correlation between ADH and water loss (r = 0.74, p < 0.001). Multinomial logistic regression showed no association between fractographic feature expression and ADH or collagen percentage. In conclusion, forensic fractographic features reliably determine initiation and directionality of crack propagation in experimentally induced PMIs up to 40,600 ADH, demonstrating the utility of this method into the recent postmortem interval. This expression of reliable fractographic features throughout the early PMI intimates these characteristics may not be useful standalone features for discerning peri- versus postmortem fractures.