刑事技术在毒品走私案侦办中的重要作用

毒品走私案件的侦办是一个不断思考和发现的过程。以刑事技术为指导的侦查理论思维更具科学性、系统性和实践性,是一种侦办毒品走私案科学化和现代化的思维方式,对于侦办复杂多变的毒品走私案件具有重要作用。     

中国共产党领导下的抗日民主根据地禁毒成效探析

抗战期间,日本在中国占领区的毒化政策进一步加剧了近代中国鸦片烟毒的泛滥。中国共产党为使根据地成为抵抗日本侵华和消灭敌人的坚强堡垒,竭尽全力从政治、经济、军事、文化和社会生活的各个方面进行了根据地的建设,其中禁烟禁毒就是重要内容之一。这些措施不仅取得了显著成效,也为抗日战争的胜利作出了贡献。同时,对于抑制日本帝国主义的毒化政策,维护抗日民主根据地的安定团结也起到了重要的作用,成为中国禁烟史上的一面光辉旗帜。     

戒毒人员复吸心理与毒友劝诱手段分析

在对131名强制戒毒人员进行访谈调查的基础上,总结了毒友劝诱戒毒者的心理动机和经常采用的手段,并在此基础上提出了相关的策略,对戒毒人员在回归社会时提高警惕、防止复吸有重要提示作用。     

The application of amino acid racemization in the acid soluble fraction of enamel to the estimation of the age of human teeth

The main objectives of the European project "Collaborative Harmonization of Methods for Profiling of Amphetamine Type Stimulants" (CHAMP) funded by the sixth framework programme of the European Commission, included the harmonization of MDMA profiling methods and the creation of a common database in a drug intelligence perspective. In the preliminary stages of this project, the participating laboratories analysed the physical characteristics, the chemical composition and the organic impurities of MDMA tablets, using the previously harmonized methods. The aim of the present work was to apply statistical treatments to the recorded data in order to evaluate their potential in the fight against drug trafficking. Comparable working procedures were applied on the different types of data. The first part of this article deals with organic impurities data, while the second part focuses on the potential of the physical characteristics. Organic impurities data were recorded by a harmonized Gas Chromatography/Mass Spectrometry (GC/MS) method previously developed. Statistical analysis provided a selection of pertinent variables among the 46 organic impurities identified in the chromatograms. Correlation coefficients were used to yield separation between populations of samples coming from the same synthesis batch and samples coming from different batches. It was shown that correlation measurements based on Pearson and cosine functions applied to the data pre-treated by normalisation to the sum of peak responses followed by the square root provided an excellent discrimination between the two populations. The statistical methods applied to organic impurities profiles proved to be excellent techniques to differentiate samples from different batches and to highlight operational links between samples.     

Characterization of lesions in hanging deaths

Hanging is a common method of committing suicide and a routine task in medico-legal autopsies. The hanging mark is the most relevant external sign and its characteristics are well known, but, for unknown reasons, there are major differences in reports on internal findings. We retrospectively studied 228 consecutive cases of hanging deaths. A complete standard autopsy was performed for every case. We investigated the association between the characteristics of the hanging mark and the frequency of bone, cartilage, soft tissue, and vascular injuries with the mode of suspension. Most cases (75.3%) presented some kind of bone or cartilage fracture, but these were unrelated to any of the variables studied. Vascular lesions are clearly more infrequent: intimal injuries were found in the carotid artery (9.1%), the jugular vein (2.2%), and ruptures of the carotid adventitial layer (21.7%). These could be partially associated with the use of a hard fixed noose and body weight.     

Skull-photo superimposition and border deaths: identification through exclusion and the failure to exclude

We report on the application of video skull-photo superimposition as an identification method in a case from Ajo, Arizona in which five individuals died after crossing into southern Arizona from Mexico. Initial analyses at the Pima County Forensic Science Center in Tucson, Arizona determined that the disarticulated skeletal remains represented two adult Hispanic males and three adult Hispanic females. Based on biological profiles, both the males and one of the females were tentatively identified and assigned names. The other two females were too similar in age and height, making skeletal separation and identification difficult. As a result, the Michigan State University Forensic Anthropology Laboratory assisted in the identification efforts by performing video skull-photo superimposition on the two unknown females. The skulls were compared to a photograph reported to be one of the missing females. By evaluating facial proportionality and by comparing a number of morphological features of the face and skulls, one skull was excluded as a possible match and one skull was not excluded as a match to the antemortem photo. Because this case was presumed to be a closed disaster, the exclusion of one skull and the failure to exclude the other represented circumstantial identifications.     

Staying the course in Mexico: the role of the US in the drug war, 2006–present

With drug-related violence reaching record levels in Mexico, there has been growing debate over its causes. US and Mexican officials blame many factors, including problems with their strategy in the drug war, fighting among cartels, corruption in police forces, an ineffective legal justice system and US drug demand. In this paper, I argue that the Mérida Initiative, a multi-billion dollar programme of US assistance, is an important additional factor. Drug-related violence increased in the years after the implementation of the Mérida Initiative, declined when Mexican officials paused new programmes in 2012 and increased again as US and Mexican officials implemented new Mérida programmes in the following years. Over the same time period, drug-related homicides and complementary counternarcotics assistance from the US Department of Defense are positively correlated. Using US records, I show that US officials have been willing to overlook the growing violence because they have been more focused on achieving their economic and strategic objectives. I conclude that their actions have played a significant role in increasing drug-related violence while starting an ominous new phase of US imperialism in Mexico.     

毒品犯罪案件中特情侦查的程序控制——以4322件案例为样本的分析

对4 322件毒品犯罪案例的统计分析发现,在特情介入方面,我国各省份的认定比例、控辩审三方的认定态度以及特情的身份来源都呈现多样性,特情参与的案件以零包贩毒为主,内心常因被动且多有引诱行为,被告人适用重刑判决较为少见.反映在实务中则表现为特情的选择条件过于宽泛、案件范围背离规范、启动缺乏证据前提、过度介入以及监控失范等...     

Trajectories of Peer Social Influences as Long-term Predictors of Drug Use from Early Through Late Adolescence

The present study analyzed the long-term effects of perceived friend use and perceived peer use on adolescents’ own cigarette, alcohol and marijuana use as a series of parallel growth curves that were estimated in two developmental pieces, representing middle and high school (N = 1,040). Data were drawn from a large drug abuse prevention trial, the Midwestern Prevention Project (MPP). Results showed that both perceived peer and friend cigarette use predicted own cigarette use within and across the adolescent years. For own alcohol and marijuana use, peer and friend influences were limited primarily to middle school. The findings suggest that strategies for counteracting peer and friend influences should receive early emphasis in prevention programs that are targeted to middle school. The findings also raise the question of whether cigarette use may represent a symbol of peer group identity that is unlike other drug use, and once formed, may have lasting adverse effects through the adolescent years.