美国因素介入南海争端的用意及影响

在美国"重返东南亚"的大背景下,南海争端呈现复杂化趋势.本文对美国因素介入南海争端的用意及其战略布局进行分析,并就美国介入对南海争端相关当事方的影响进行分析和探讨.     

Expedited, chemically enhanced sperm cell recovery from cotton swabs for rape kit analysis

This report focuses on the development of a method for chemically induced enhancement of cell elution and recovery from cotton swabs. The method exploits the exclusive use of detergents for intact cell removal, and can be utilized in conjunction with, or to circumvent, conventional differential extraction (DE). Samples treated with Sarkosyl (54.4 +/- 1.8%) and sodium dodecyl sulfate (SDS) (78.5 +/- 0.7%) yielded higher sperm cell recoveries than a conventional DE buffer (39.4 +/- 2.1%). The results indicated that the choice of detergent affected sperm cell yield, with anionic detergents having the greatest effect. Storage time of samples affected the concentration of detergent required for optimal sperm cell recovery, longer times requiring increased detergent concentrations. In addition, the extent of sperm cell lysis by proteinase K digestion was evaluated. The results indicate that the exclusive use of SDS enhances the release of sperm and epithelial cells from a cotton swab as compared with DE buffer, providing for a more effective DNA analysis.     

Rapid separation and characterization of cocaine and cocaine cutting agents by differential mobility spectrometry-mass spectrometry

Forensic drug laboratories are inundated with cases requiring time-consuming GC- or LC-based chromatographic separations of submitted samples. High-throughput analytical methods would be of great practical utility within forensic drug analysis. Recently developed ion-mobility-based separation methods combined with mass spectrometry can often be used without chromatography, suppress chemical interferents of similar mass, and operate in seconds. We have evaluated differential mobility spectrometry-mass spectrometry (DMS-MS) for performance on adulterated cocaine mixtures. The DMS interface is only a few centimeters in length, operates in seconds, and can be adapted to any MS system using atmospheric pressure ionization. Drug cutting agents, typical targets such as cocaine, and drug metabolites are rapidly separated by the DMS ion prefilter. Tests demonstrated characterization of complex mixtures, such as isolation of levamisole, an adulterant with alarming side effects, from a 13-component mixture. DMS-MS holds great potential for the analysis of drug samples submitted for forensic analysis.     

Who Will Graduate? Disruption of High School Education by Arrest and Court Involvement

Little research has assessed the effects of juvenile justice involvement during high school on educational outcomes. Using the National Longitudinal Survey of Youth 1997, this study assesses the effect of first‐time arrest and court involvement during high school on educational attainment. In addition, differential effects by structural location are examined. Findings suggest support for the labeling perspective. First‐time court appearance during high school increases the chances of dropping out of high school independent of involvement in delinquency. Furthermore, the effect of court appearance is particularly detrimental to less delinquent youths.     

各行其道：刑民冲突案件的审理思路——以非法吸收公众存款、集资诈骗和民间借贷纠纷案件的冲突为视角

审理刑民冲突案件的前提是确定刑事诉讼程序与民事诉讼程序的启动与否以及处理刑民案件时的先后顺序。＂刑民独立、并行为主＂应为审理之基本原则,并以＂先刑后民＂、＂先民后刑＂为例外。非法吸收公众存款、集资诈骗案件与民间借贷案件之间的冲突是刑民冲突的典型表现,司法实践中的处理各有不同。     

Enhanced elution of sperm from cotton swabs via enzymatic digestion for rape kit analysis

This report describes development of a method for enhanced cell elution from cotton swabs. The method exploits an enzyme mixture for digestion of the cotton to remove intact cells, and can be utilized in conjunction with or to circumvent conventional differential extraction (DE). Samples digested with Aspergillus niger cellulase yielded sperm cell recoveries (18+/-3.5%) similar to conventional DE buffer (23+/-7.8%) while providing intact epithelial cells. Storage time affected the concentration of enzyme required for optimal sperm cell recovery, with longer times requiring increased cellulase concentrations. Cellulase from A. niger yielded a twofold enhancement in sperm cell elution over buffer alone, and preliminary testing of higher activity cellulases from Trichoderma reesei and Trichoderma viride showed even greater enhancement. These results indicate that cellulose-digesting enzymes enhance the release of sperm and epithelial cells from a cotton swab over buffer alone, providing for efficient DNA analysis.     

关于居民收入差距的原因及对策分析

居民收入分配的问题是我国经济体制转型过程中产生的一个突出问题,也是目前人们关注的焦点。防止居民收入差距过大的对策,主要是合理运用宏观调控政策,通过税收手段调节过高收入,通过其他财政政策调节过低收入,并科学运用社会保障制度,取缔非法收入。     

Maltreated Children and Their Families in Juvenile Dependency Court II: Maltreatment Recidivism

The most serious maltreatment cases are referred to Juvenile Dependency Court. Eighty-eight court records were coded for factors related to maltreatment recidivism, including prior involvement histories, differential response, and placement changes. Seventy-two percent of caregivers had previous involvement, which correlated with family size and number of presenting concerns. When caregivers were offered voluntary services previously, 15% were completed. Children of substance-abusing caregivers were more likely to have prior involvement with the system. On average, children experienced four placement changes. Almost half of children reunified with caregivers had to be removed by the court. Recommendations and future directions are discussed.     

Differential association theory reconsidered: An extension and its empirical test

In 1974 the German methodologist Karl-Dieter Opp expounded and expanded Sutherland's differential association theory. In this article an empirical test of this version of the theory is presented based on data for 1196 boys and girls in the age range 12 to 17 years. Furthermore, some new and additional theoretical specifications about the social influence of others on the individual, all in accordance with the original ideas of Sutherland, are proposed and empirically tested. The differential association theory according to the version of K.-D. Opp is fairly well corroborated by the data. Only three of the postulated relationships are rejected. The theory explains 51% of the variance of criminal behavior, even considering that no criminal population is used for the test and only minor offenses are measured. The test also shows that the impact of the frequency of contacts with deviant behavior patterns on the development of positive definitions and on the frequency of communication about relevant techniques is substantial and cannot be ignored by criminologists. Furthermore, special analyses show that several propositions favor the theory. It is the deviancy of others that has the most substantial impact: the more youngsters have contact with their friends, the stronger the impact of the deviancy of their friends on the development of positive definitions or on the frequency of communication about techniques. The tests also show that the more youngsters identify themselves with others, the stronger will be the impact of the deviancy of the others on their norms. These results support the modification of the DA theory according to Opp and falsify some propositions of social control theory.     

School Violence: The Role of Parental and Community Involvement

This study utilizes the School Survey on Crime and Safety to identify variables that predict lower levels of violence from four domains: school security, school climate, parental involvement, and community involvement. Negative binomial regression was performed and the findings indicate that statistically significant results come from all four domains. When modifying the sample to include only schools that offer some form of parental involvement opportunities, schools with greater parental volunteering and participation in subject area events experience reduced levels of violence. Implications from this analysis include developing creative methods for greater parental input in school activities.