Application of Micro‐Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy to Ink Examination in Signatures Written with Ballpoint Pen on Questioned Documents

Questioned documents examined in a forensic laboratory sometimes contain signatures written with ballpoint pen inks; these signatures were examined to assess the feasibility of micro‐attenuated total reflectance (ATR) Fourier transform infrared (FTIR) spectroscopy as a forensic tool. Micro‐ATR FTIR spectra for signatures written with 63 ballpoint pens available commercially in Korea were obtained and used to construct an FTIR spectral database. A library‐searching program was utilized to identify the manufacturer, blend, and model of each black ballpoint pen ink based upon their FTIR peak intensities, positions, and patterns in the spectral database. This FTIR technique was also successfully used in determining the sequence of homogeneous line intersections from the crossing lines of two ballpoint pen signatures. We have demonstrated with a set of sample documents that micro‐ATR FTIR is a viable nondestructive analytical method that can be used to identify the origin of the ballpoint pen ink used to mark signatures.     

试析我国高等职业学校的合理定位与稳步发展

当今世界范围的竞争日趋激烈,经济的竞争,科学技术的竞争,归根到底是教育的竞争和人才的竞争。因此,提高劳动者的全面素质,对于一个国家的社会经济发展可以说具有决定性的意义。高等职业教育承担着培养一线劳动者的任务,办好高等职业教育,对于全面提高劳动者素质,发展生产力,提高产品质量,促进经济发展具有巨大的作用。     

TOF‐SIMS Analysis of Red Color Inks of Writing and Printing Tools on Questioned Documents

Time‐of‐flight secondary ion mass spectrometry (TOF‐SIMS) is a well‐established surface technique that provides both elemental and molecular information from several monolayers of a sample surface while also allowing depth profiling or image mapping to be performed. Static TOF‐SIMS with improved performances has expanded the application of TOF‐SIMS to the study of a variety of organic, polymeric, biological, archaeological, and forensic materials. In forensic investigation, the use of a minimal sample for the analysis is preferable. Although the TOF‐SIMS technique is destructive, the probing beams have microsized diameters so that only small portion of the questioned sample is necessary for the analysis, leaving the rest available for other analyses. In this study, TOF‐SIMS and attenuated total reflectance Fourier transform infrared (ATR‐FTIR) were applied to the analysis of several different pen inks, red sealing inks, and printed patterns on paper. The overlapping areas of ballpoint pen writing, red seal stamping, and laser printing in a document were investigated to identify the sequence of recording. The sequence relations for various cases were determined from the TOF‐SIMS mapping image and the depth profile. TOF‐SIMS images were also used to investigate numbers or characters altered with two different red pens. TOF‐SIMS was successfully used to determine the sequence of intersecting lines and the forged numbers on the paper.     

北京市海淀区人民检察院附条件逮捕程序运行现状

海淀区人民检察院作为北京市率先试行附条件逮捕程序的检察机关.在实践中印证了附条件逮捕程序有利打击犯罪、保障刑事诉讼顺利进行的制度优越性的同时,也发现该程序存在适用范围界定不明确、侦查机关重视不足、不利于保障犯罪嫌疑人合法权益等问题,亟需采取相应举措予以完善.     

大学生就业能力的多角度剖析及对策探讨——对重庆市1618名在校大学生的调查与分析

大学生就业问题是当前全社会关注的焦点和热点,解决这一问题的关键在于提升大学生的就业能力.文章分析了大学生就业能力所存在的问题,从大学生自身、高校、政府三个角度解析其原因,并提出时策建议.     

权力规制：和谐社会的重要保障

社会发展的和谐状态一直是人类永恒追求的理想目标。政治文明建设是构建和谐社会的重要一环。但是,公共权力本身具有的特性,使得权力的腐败成为可能。权力腐败成为影响政治文明建设的制约性因素,也是影响和谐社会构建的重要因素之一。面对权力的腐败,我们必须加强社会主义政治文明建设,用制度的力量规制权力的行为、从而从根本上推动和谐社会的构建。     

论保持党同人民群众的血肉联系

始终保持党同人民群众的血肉联系是加强党的执政能力建设的核心;是以马克思主义为理论基础;是共产党八十多年的奋斗历史的经验总结;是党执政55年来的一条成功经验;是对世界上一些执政党兴衰成败的经验教训的深刻启发;是改革开放和建设社会主义事业的实践需要。     

基于手机微信阅读的社区居民核心价值观教育研究

在手机微信阅读时代,社区居民社会主义核心价值观教育机遇和挑战并存。当前,必须以文化自信引领社区居民社会主义核心价值观教育,提升社区居民对民族文化认同感,实现社区居民核心价值观教育的精准推广,引导社区居民核心价值观教育正能量,引领社区居民核心价值观教育生态,构建社区居民核心价值观教育文献数据库,创建社区居民核心价值观教育微信书友群,引领社区居民核心价值观教育新生态。     

Inherent Fluorescence Detection of Latent Fingermarks by Homemade Shortwave Ultraviolet Laser

Detection of latent fingermarks on various substrates is critical in crime investigations. Conventional chemical methods using reagents could contaminate or even destruct biological information of samples. Here, an optical method and successful case application of detecting latent fingermarks through long‐wave ultraviolet (UV) fluorescence (300–400 nm) by shortwave UV laser excitation is reported. Experimental results indicate that the recovery rate of the latent fingermarks on various paper items is in the range of 70–80% without chemical treatments. Moreover, the optical method allows for the preservation of samples for further examination, such as polymerase chain reaction (PCR) testing. The technique has also been successfully applied to a criminal case in identifying the suspect, which, to the best of our knowledge, has never been reported in real crime investigations. Therefore, such a method as UV‐excited UV fluorescence in detecting latent fingermarks may be better for examination in cases where biological information of samples is needed for consequent testing.     

科学发展观的人文思考

党的十六届三中全会明确提出:"坚持以人为本,树立全面、协调、可持续的发展观,促进经济社会和人的全面发展."科学发展观与人文精神相辅相成,科学发展观蕴涵着崇高的人文精神和深切的人文关怀.它们的共同特征都是以人为本.