An accuracy assessment of forensic computerized facial reconstruction employing cone-beam computed tomography from live subjects

The utilization of 3D computerized systems has allowed more effective procedures for forensic facial reconstruction. Three 3D computerized facial reconstructions were produced using skull models from live adult Korean subjects to assess facial morphology prediction accuracy. The 3D skeletal and facial data were recorded from the subjects in an upright position using a cone-beam CT scanner. Shell-to-shell deviation maps were created using 3D surface comparison software, and the deviation errors between the reconstructed and target faces were measured. Results showed that 54%, 65%, and 77% of the three facial reconstruction surfaces had <2.5 mm of error when compared to the relevant target face. The average error for each reconstruction was -0.46 mm (SD = 2.81) for A, -0.31 mm (SD = 2.40) for B, and -0.49 mm (SD = 2.16) for C. The facial features of the reconstructions demonstrated good levels of accuracy compared to the target faces.     

耻骨年龄推断方法的研究进展

在法医实践中,利用耻骨联合推断年龄的方法得到了广泛应用和不断发展。从实体形态观察到影像资料分析,国内外学者通过不懈努力取得了一系列的研究成果,并不断探寻着更为精确便捷的推断方法。螺旋CT三维重建技术在法医学上具有广阔的应用前景,为耻骨年龄推断开辟了新的方向。本文综述了国内外研究耻骨联合与年龄关系的常见方法,展望了耻骨年龄推断的发展方向。     

R＆D活动的产出效率分析——基于广东省的个案研究

R＆D是科技活动的核心。利用第二次全国R＆D资源数据对广东省R＆D活动的产出效率进行研究的结果表明,2001—2009年广东省R＆D活动的科技产出和经济产出规模快速扩大,质量不断提高,但是增长的起伏较大。数据包络分析（DEA）显示,广东省R＆D产出的综合效率较高,但是规模效率不佳,R＆D人员投入存在冗余,R＆D活动的产出不足率较高,目前R＆D产出已处于规模报酬递减阶段。由此得到的启示是,广东省要提升R＆D科技产出和经济产出的稳定性,优化R＆D资源配置。     

D1S80等位点在法医物证鉴定中应用价值评估

比较D1S80 ,DQA1+PM和CTT等位点在法医物证鉴定中应用情况 ,经研究发现 ,D1S80位点识别能力较强 ,基因遗传稳定 ,其电泳检测操作简单 ,易推广 ;DQA1+PM位点扩增片段较短 ,反向斑点杂交法灵敏度高 ,特别适用于陈旧、降解和微量生物检材的鉴定 ;CTT位点的荧光检测法稳定、可靠 ,实验结果便于保存和管理。总之 ,D1S80、DQA1+PM和CTT位点的遗传符合孟德尔定律 ,分型简便、可靠 ,在亲子鉴定和个人识别中发挥重要作用。