头颅CT片性别的识别

目的 通过头颅CT片研究性别识别的方法.方法 在头颅CT片测量头颅多项指标,应用各个指标进行二分类logistic回归分析建立性别判定方程. 结果应用颧弓间距指标可以建立一元方程:Z=-69.051 0.521X1,p=1/1 e-z.应用多项指标可以建立多元方程:Z=-115.873 0.585X1 0.119X4 0.254X7 0.229X8 0.101X6,P=1/1 e-z.结论 根据头颅CT片进行性别判定时,最好是测量多项指标.在指标不全时,就只需测量颧弓间距,也可以有较好的判别效果.     

Comprehensive analyses for genetic diversities of 19 autosomal STRs in Chinese Kazak group and its phylogenetic relationships with other continental populations

Short tandem repeats (STRs) play an essential role in forensic genetics due to their high degree of polymorphisms, wide distributions and easy detection method. In this study, allelic frequencies and forensic statistical parameters of the 19 autosomal STR loci in a Kazak ethnic group were calculated, and its genetic relationships with reference populations were assessed in order to understand population structure better and enrich population genetic data for forensic practice in Chinese Kazak ethnic group. There were 226 identified alleles with the corresponding allelic frequencies ranging from 0.0008 to 0.5295 in the 628 unrelated healthy Kazak individuals in Xinjiang Uygur Autonomous Region. All autosomal STRs were conformed to the Hardy-Weinberg equilibrium after Bonferroni’s correction. The cumulative power of discrimination and the combined probability of exclusion of all the 19 autosomal STRs were 0.999 999 999 999 999 999 999 997 162 and 0.999 999 994 484, respectively. Furthermore, the D_A distances and Fixation index values of pairwise populations, principal component analysis, multidimensional scaling analysis, phylogenetic tree analysis and structure analysis were conducted to probe the genetic relationships between the Kazak group and other reference populations. The population genetic results showed that these 19 autosomal STR loci were characterised by high genetic diversities in the Kazak group. Furthermore, the studied Kazak group had close genetic relationships with the Uyghur group and the Uzbek group. The present results may facilitate understanding the genetic background of the Chinese Xinjiang Kazak group.     

环北部湾地区的铜鼓文化

铜鼓是中国南方少数民族及东南亚民族特有的打击乐器,古老而珍贵。它从公元前7世纪左右产生,二直流传到现在,延续了2600多年,分布于中国云南、贵州、广西、广东、海南、湖南、重庆、四川等8省（市、区）及除菲律宾以外的东南亚其他国家。在漫长的演化发展过程中,铜鼓逐渐成为这些民族生产生活不可或缺的重要器物,并与政治、经济和文化习俗紧密相连,创造了灿烂的铜鼓文化。中外学者研究铜鼓硕果累累,但将研究铜鼓置于环北部湾地区这个背景之下的成果较少。     

论共犯从属性理论的内涵

共犯从属性理论内涵的多重性使得在使用共犯从属性概念时颇为混乱。对共犯从属性的内涵实有梳理的必要。共犯从属性理论并不能以一个简单的概念来概括,其是一个包括了诸多问题的理论体系。其内涵包括可罚从属性与实行从属性;而要素从属性则是实行从属性中涉及的问题。对共犯从属性内涵的分层次把握,构建共犯从属性理论内涵的理论体系具有一定的理论价值。