从社会成因看娱乐场所女性吸毒的防控

与传统毒品痛苦的身体依赖症状相比,有＂俱乐部＂毒品之称的冰毒、摇头丸、K粉等新型毒品的生理成瘾症状很不明显。在这种极具欺骗性和诱惑性的药理特性和女性被动依附人格弱点的双重影响下,娱乐场所的女性陪侍者乃至商业＂性＂交易者成了新型毒品的最大受害者,女性作为男性主宰下的新型毒品消费市场受害者的角色轨迹清晰可辨。当前的禁毒工作应着重强调对吸毒女性＂病人＂和＂受害者＂身份的理解和宽容;应在提高女性素质,增强其自立自强能力的同时,尽快建立针对吸毒女性人格特点的社区帮教支持网络。     

"相关市场"界定的困惑与解析

在反垄断法上,"相关市场"的界定往往是展开竞争分析的出发点和前提.为了使其界定的结果更加符合实际情况,各国的执法机构在实践中纷纷引入经济分析的方法,并且总结出了许多界定的规则,但是由于经济生活的极度复杂性,使得这一界定过程充满了不确定的因素.加之考虑到司法成本的投入和法官素质要求过高等限制性条件,要想精确地界定"相关市场"的边界便显得十分困难.     

Inferring ancestral origin using a single multiplex assay of ancestry-informative marker SNPs

Tests that infer the ancestral origin of a DNA sample have considerable potential in the development of forensic tools that can help to guide crime investigation. We have developed a single-tube 34-plex SNP assay for the assignment of ancestral origin by choosing ancestry-informative markers (AIMs) exhibiting highly contrasting allele frequency distributions between the three major population-groups. To predict ancestral origin from the profiles obtained, a classification algorithm was developed based on maximum likelihood. Sampling of two populations each from African, European and East Asian groups provided training sets for the algorithm and this was tested using the CEPH Human Genome Diversity Panel. We detected negligible theoretical and practical error for assignments to one of the three groups analyzed with consistently high classification probabilities, even when using reduced subsets of SNPs. This study shows that by choosing SNPs exhibiting marked allele frequency differences between population-groups a practical forensic test for assigning the most likely ancestry can be achieved from a single multiplexed assay.     

The Role of Interface Shape on the Impact Characteristics and Cranial Fracture Patterns Using the Immature Porcine Head Model, ,

The forensic literature suggests that when adolescents fall onto edged and pointed surfaces, depressed fractures can occur at low energy levels. This study documents impact biomechanics and fracture characteristics of infant porcine skulls dropped onto flat, curved, edged, and focal surfaces. Results showed that the energy needed for fracture initiation was nearly four times higher against a flat surface than against the other surfaces. While characteristic measures of fracture such as number and length of fractures did not vary with impact surface shape, the fracture patterns did depend on impact surface shape. While experimental impacts against the flat surface produced linear fractures initiating at sutural boundaries peripheral to the point of impact (POI), more focal impacts produced depressed fractures initiating at the POI. The study supported case‐based forensic literature suggesting cranial fracture patterns depend on impact surface shape and that fracture initiation energy is lower for more focal impacts.     

Differences between Homicides Committed by Lone and Multiple Offenders in Korea

The aim of this study was to differentiate between homicides committed by multiple offenders and homicides committed by lone offenders. Using data on homicide incidents that occurred in South Korea between 1985 and 2008, we compared 134 homicides committed by multiple offenders, with 369 homicides committed by lone offenders. A greater proportion of homicides committed by multiple offenders involved injuries to the victim's head compared to homicides by lone offenders. Homicides committed by multiple offenders were more likely to involve blunt instruments and ligatures, whereas homicides by lone offenders were more likely to involve sharp instruments. In addition, a majority of the homicides committed by multiple offenders were planned. The results of this study have practical implications for homicide investigations, as well as theoretical implications for homicide research on the difference in offense behaviors based on the number of offenders.     

Searching for Livelihood Security: Land and Mobility in Burkina Faso

The incremental approach to land reform in sub-Saharan Africa constitutes a rapprochement between proponents of the introduction of private property regimes and their critics. The incrementalists recognise that local tenure regimes can change and that they should be the basis of any land-reform programme. This article argues that an important gap remains with regard to the dynamics of tenure arrangements observed in a highly insecure environment, because the incremental approach retains a western-type of tenure security as its ultimate goal. Geographic mobility of actors and fields is essential to the protection of livelihoods in the north-central region of Burkina Faso. This mobility not only is made possible by the prevailing land tenure regime but also underpins its flexibility and allows the merging and shifting of rights. All of this argues against the establishment of western-type tenure security and in favour of the maintenance of flexible resource tenure regimes - a model discussed in recent years in relation to pastoral land use in drylands. This would have the additional advantage of integrating understandings of, and approaches to, pastoralists' and crop-farmers' land use in regions where these population groups already intermingle.     

Geographic and technological R&;D spillovers within the triad: micro evidence from US patents

This paper aims at assessing the magnitude of R&D spillover effects on large international R&D companies’ productivity growth. In particular, we investigate the extent to which R&D spillover effects are intensified by both geographic and technological proximities between spillover generating and receiving firms. We also control for the firm’s ability to identify, assimilate and absorb the external knowledge stock. The results estimated by means of panel data econometric methods (system GMM) indicate a positive and significant impact of both types of R&D spillovers and of absorptive capacity on productivity performance.

Free and unfree labor in Qing China: Emigration and escape among the bannermen of northeast China, 1789–1909

Though internal migration in China during the Qing era (1644–1911) was mostly unrestricted, the government tightly controlled the movement of peasants who worked state lands in frontier regions and certain other locations. Such peasants accounted for 5–10% of China's population. In the state farms of northeast China, households could move legally only from one place to another within the system. Departure from the system was illegal. In this article, one of the first quantitative studies of migration in late imperial China, we apply discrete-time event-history methods to longitudinal, nominative household register data from six northeast Chinese state farm systems to compare how characteristics of the farm system, village, and household influenced the chances of legal moves and illegal departures. We show that among these state peasants, who were supposedly “unfree,” migration was not uncommon. We also show that the determinants of legal and illegal migration differed substantially. We conclude with a discussion of the implications of these findings for our understanding of migration processes in late imperial China.     

奇虎诉腾讯滥用市场支配地位纠纷上诉案二审判决的评析

自2008年《反垄断法》生效以来,"奇虎诉腾讯滥用市场支配地位一案"是最高人民法院依据《反垄断法》审理的第一起案件,该案的审理过程和判决结果都引发了理论界和实务界的广泛探讨。以二审判决书为主要分析对象,并结合《反垄断法》的规定和反垄断案件分析的一般思路,研究了最高人民法院对《反垄断法》具体条文的理解和适用的基本立场,为解决将来反垄断执法和私人诉讼中的一些原则性问题提供了参考。最高院在判决中对免费市场运用假定垄断者测试、确定相关地域市场等问题上有精彩论证,同时也留下了一些值得探讨的问题,例如,在市场份额对判定市场支配地位的作用、相关市场的界定是否属于反垄断案件的基本事实等重要问题上,法院存在模棱两可甚至自相矛盾的结论。     

Fracture patterns on the infant porcine skull following severe blunt impact

The objective of this study was to document patterns of fracture on infant porcine skulls aged 2-28 days (n = 57) because of a single, high energy blunt impact to the parietal bone with rigid (nondeformable) and compliant (deformable) interfaces. Fracture patterns were mapped using Geographic Information System software. For the same generated impact force, the rigid interface produced more fractures than the compliant interface for all ages. This study also showed that this increased level of impact energy versus an earlier study using a lower energy resulted in new sites of fracture initiation and also caused previously defined fractures that propagate into an adjacent bone. Several unique characteristics of bone and diastatic fracture were documented as a function of specimen age, impact energy, and interface. These data describe some baseline characteristics of skull fracture using an animal model that may help guide future studies from forensic case files.