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目的通过对中国汉族男女6~18周岁人群全口曲面断层影像上所显示的下颌左侧牙齿钙化程度进行比较研究,探究牙齿生长发育的性别差异,为建立用牙齿推断中国汉族儿童及青少年年龄的线性回归模型提供理论依据。方法通过对13491张(男6568张,女6923张)中国汉族6~18周岁儿童及青少年全口曲面断层影像的牙齿钙化规律进行研究,建立牙齿钙化的分级标准,并对下颌恒牙进行分级评分;数据用SPSS 13.0软件处理。结果非参数检验结果显示大部分年龄组下颌左侧8颗恒牙钙化分级值性别间的差异有统计学意义(P0.05);在8颗恒牙发育程度同等条件下,女性年龄比男性小0.303岁。结论中国汉族6~18周岁人群牙齿发育存在着性别差异;在利用牙齿钙化程度建立推断中国汉族儿童及青少年年龄的方程模型时,应分性别建模。 相似文献
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中国汉族男女股骨性别差异 总被引:2,自引:0,他引:2
经测量235副(男158副,女77副)已知生前确切性别的成年股骨的21项指标,对单一测量项目判定股骨性别的效果进行了检验。结果表明,21项测量指标中有11项单一指标的判别效果达80%以上。采用Fisher两类判别分析法对测量数据进行统计处理,得到根据单侧股骨测量值判别性别的函数方程14个;对南方和北方人群组的测量数据,分别用Fisher两类判别法进行统计,建立了根据单侧股骨测量值判断性别的函数34个,判别率最高达98.23%。与盲测判别准确率相近。该法可用于法医人类学的个体识别。 相似文献
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本文对测定血痕中睾酮量(T)和全血蛋白量(P),及T/P的比值来判断血痕性别的可能性进行了探讨.通过测定102名健康成年人血痕(男性57名,女性45名),得出本法对男性血痕的肯定率为80.7%,对女性血痕的肯定率为88.9%.实验中还观察到时间因素及某些环境因素(霉变)能使两性血痕T/P值降低. 相似文献
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DANA M. BRITTON 《犯罪学》1997,35(1):85-106
This article examines the relationship between race and sex and perceptions of the work environment among correctional officers. It addresses four central questions: (1) Are there race and sex differences among correctional officers in their perceptions of the work environment? (2) Do characteristics of the job and the institutions in which officers work account for these differences? (3) Do these differences attenuate over time? (4) Are there factors that mediate the relationship between race and sex and perceptions of the work environment? These issues are explored using data drawn from the correctional officer sub-sample (N= 2,979) of the 1992 administration of the Prison Social Climate Survey. Findings indicate that race and sex do play a role in shaping officers’ perceptions of the work environment, that these differences between groups are not completely accounted for by job or institutional characteristics and do not attenuate over time, and that there are factors that mediate the relationship between race and sex and workplace perceptions. Among minority male officers, greater efficacy in working with inmates appears to be an important factor in creating lower levels of job stress, while white female officers’ higher levels of overall job satisfaction are accounted for largely by a more positive evaluation of the quality of supervision. 相似文献
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用引物Y_3、Y_4和PCR方法鉴定性别的法医学应用 总被引:1,自引:0,他引:1
用Y3、Y4和Alu9.1、Alug.2两对引物和PCR方法检测陈旧血痕和毛根的性别获得成功。引物Y3、Y4扩增的靶序列位于Y染色体特异3.4Kb重复序列中,扩增产物为460bp;引物Alu9.1、Alu9.2用以扩增男女共有的Alu重复序列,扩增产物为130bP。室温保存13年之久的19例脐带血血痕(男性9冽,女性10例)和室温保存10~11个月的10例已知性别自然脱落毛根(男性6例,女性4例)的性别测定结果均正确;对一起凶杀案的血痕性别测定为定案提供了重要证据。本方法简化了样品的前处理过程。 相似文献