数码相片的证据作用探析

数码相机在公安司法工作中的应用非常广泛,用数码相机所获取的数码相片,因其的易修改性,使人们对其证据作用产生了怀疑,笔者认为,依据我国法律,数码照片可以作为证据使用,但必须经严格的审查判断。     

数字网络传播技术下影视作品的合理使用

技术是法律制度的催化剂,数字网络传播技术以更快的速度和更广的范围内传播影视作品,不仅提高了影视作品及权利人知名度,而且对推进社会文明也有不可磨灭的贡献;但是网络强大的复制功能和无地域性使著作权人对其影视作品失去了控制。合理使用制度作为著作权人的个人利益和社会利益的平衡器受到挑战。本文通过分析数字网络技术对影视作品合理使用的冲击,论证合理使用制度在数字网络时代存在的基础及重构。     

字符编码在电子数据司法鉴定中的应用

本文分析了字符的常用编码方法以及如何对各种不同编码方式进行转码和解码，提出了基于字符编码的关键字查询方法，并结合电子数据司法鉴定工作中遇到的实际案例，描述如何通过该方法实现关键字的快速查询。     

数字手写笔迹的特点及其检验研究

无纸化办公已成为互联网时代最重要的办公模式之一，数字手写技术凭借其快速便捷、保留原笔迹进行线上批阅、签发文件的特性，迅速为各类用户所接受，数字手写笔迹也将越来越多地出现在案件纠纷中。由于数字手写技术所需的书写工具和书写承载物与传统笔迹全然不同，导致数字手写笔迹产生了许多特征变异，传统笔迹检验方法已很难适应这种新型笔迹，然而关于数字手写笔迹的研究，国内外尚属空白。通过详细总结、分析数字手写笔迹的特征，得出数字手写笔迹种属认定和同一认定的检验办法，并对数字手写笔迹的检验规则之完善提出合理化建议。     

论我国数字图书馆著作权合理使用制度的构建

合理使用制度在数字化图书馆的正常运转中仍有存在的必要，我国目前立法对数字图书馆合理使用作品规定了严格的条件，使数字图书馆在信息储存和传播方面的优势消失殆尽。我们要根据利益平衡的精神，赋予公益性数字图书馆在一定条件下以数字化形式复制馆藏作品的权利，并将公益服务范围内的信息网络传播行为纳入数字图书馆合理使用的范畴。     

数字图像技术辅助二次短路熔痕金相组织定量分析研究

以电气火灾二次短路熔痕显微组织为例，利用显微图像各组元的灰度特性，运用数字图像技术中的图像滤波、图像分割、轮廓提取方法对显微组织图像进行预处理，获取图像晶格和孔洞。结合体视学方法．对显微组织晶格粒径、孔洞大小等几何特征参数进行计算分析与测量，探讨数字图像技术辅助二次短路熔痕金相组织进行定量分析技术方法。     

政法高职院校特色数字图书馆建设研究与实践[1]--以北京政法职业学院图书馆为例

高职院校数字数字图书馆建设要与本校高职人才培养特色相结合,为高素质、高技能人才的培养提供全面保障。文章结合北京政法职业学院图书馆建设特色数字图书馆的实践经验,阐述了政法高职院校的特色数字图书馆建设要突出专业特色、职业教育特色和提升服务能力,希望为高职院校图书馆建设特色数字图书馆提供借鉴。     

Identification of group affinity from cross-sectional contours of the human midfacial skeleton using digital morphometrics and 3D laser scanning technology

Identifying group affinity from human crania is a long-standing problem in forensic and physical anthropology. Many craniofacial differences used in forensic skeletal identification are difficult to quantify, although certain measurements of the midfacial skeleton have shown high predictive value for group classifications. This study presents a new method for analyzing midfacial shape variation between different geographic groups. Three-dimensional laser scan models of 90 crania from three populations were used to obtain cross-sectional midfacial contours defined by three standard craniometric landmarks. Elliptic Fourier transforms of the contours were used to extract Fourier coefficients for statistical analysis. After cross-validation, discriminant functions based on the Fourier coefficients provided an average of 86% correct classifications for crania from the three groups. The high rate of accuracy of this method indicates its usefulness for identifying group affinities among human skeletal remains and demonstrates the advantages of digital 3D model-based analysis in forensic research.     

Assessment of approximate likelihood ratios from continuous distributions: a case study of digital camera identification

A reported likelihood ratio for the value of evidence is very often a point estimate based on various types of reference data. When presented in court, such frequentist likelihood ratio gets a higher scientific value if it is accompanied by an error bound. This becomes particularly important when the magnitude of the likelihood ratio is modest and thus is giving less support for the forwarded proposition. Here, we investigate methods for error bound estimation for the specific case of digital camera identification. The underlying probability distributions are continuous and previously proposed models for those are used, but the derived methodology is otherwise general. Both asymptotic and resampling distributions are applied in combination with different types of point estimators. The results show that resampling is preferable for assessment based on asymptotic distributions. Further, assessment of parametric estimators is superior to evaluation of kernel estimators when background data are limited.     

高职院校图书馆数字信息资源建设研究

数字图书馆时代,高校图书馆数字信息资源建设势在必行。本文分析了北京地区示范性高职院校图书馆数字信息资源建设的现状、问题及对策。