Application of Raman Spectroscopy and Surface‐Enhanced Raman Scattering to the Analysis of Synthetic Dyes Found in Ballpoint Pen Inks*

Abstract: The applicability of Raman spectroscopy and surface‐enhanced Raman scattering (SERS) to the analysis of synthetic dyes commonly found in ballpoint inks was investigated in a comparative study. Spectra of 10 dyes were obtained using a dispersive system (633 nm, 785 nm lasers) and a Fourier transform system (1064 nm laser) under different analytical conditions (e.g., powdered pigments, solutions, thin layer chromatography [TLC] spots). While high fluorescence background and poor spectral quality often characterized the normal Raman spectra of the dyes studied, SERS was found to be generally helpful. Additionally, dye standards and a single ballpoint ink were developed on a TLC plate following a typical ink analysis procedure. SERS spectra were successfully collected directly from the TLC plate, thus demonstrating a possible forensic application for the technique.     

Unusual Death of a Transvestite: Identification of Crime Weapon and Survival Time*

Abstract: The authors report a case of a transvestite found murdered near his automobile with several lacerated contused wounds to the face and cranial fractures. Autopsy revealed that the cause of death was a serious head trauma with subdural and subarachnoidal hemorrhages. In order to identify the crime weapon, a scanning electron microscopy (SEM) was used which revealed metallic residue on the skin fragments with the same molecular composition of the car paint. As for survival time, antibody anti‐beta‐amyloid precursor protein (APP) was applied to brain fragments and brainstem tissue, allowing for axonal varicosities (which form 2 to 3 h following death) to be observed under the optic microscope. So, by using SEM we understood that the fatal cranial‐encephalic lesions were the result of the victim’s head being repeatedly struck against the car door while anti‐betaAPP led to the understanding that the time elapsed between injury and death was less than 2 to 3 h.     

Assessing a Child’s Experience of Multiple Maltreatment Types: Some Unfinished Business

Available research indicates that maltreated children frequently experience multiple types of maltreatment, although relatively few studies examine this issue directly. Review of existing studies also shows that, when investigated, maltreatment types are often correlated. However, from study to study the strength of associations among maltreatment types varies considerably, apparently due to methodological differences, such as differences in operational definitions of the maltreatment types, composition of samples and/or method of scaling used. Failure to account for overlap among maltreatment types can result in a misleading picture of a child’s trauma history. This in turn can lead to an inaccurate evaluation of the relationship between a child’s victimization experiences and later developmental outcomes. The wide variation in correlations among the maltreatment types from study to study raises questions about the validity of the different operational definitions used. Improving the construct validity of the maltreatment type measures is proposed as the means to obtaining more consistent results. Steps by which to achieve this objective are outlined. This project (1 RO1 HD049767-01A2) is co-funded by the National Institute of Child Health and Human Development (NICHD) and the Office of Behavioral and Social Sciences Research (OBSSR). The authors wish to thank M. Jean Russo for reviewing a draft of this paper.     

Patterns of Risk and Protective Factors in the Intergenerational Cycle of Maltreatment

This study investigates the continuation and discontinuation of the intergenerational transmission of child maltreatment within the first 13 months of the child’s life. Differences in risk factors and parenting styles between families who initiate (Initiators), maintain (Maintainers) or break (Cycle Breakers) the intergenerational cycle of child maltreatment are explored in comparison to control families (Controls). One hundred and three Health Visitors were trained to assess risk factors and parenting styles of 4,351 families, at both 4–6 weeks and 3–5 months after birth. Maintainers, Initiators and Cycle Breakers had a significantly higher prevalence for the majority of risk factors and poor parenting styles than Controls. Protective factors of financial solvency and social support distinguished Cycle Breakers from Maintainers and Initiators. Therefore, it is the presence of protective factors that distinguish Cycle Breakers from families who were referred to Child Protection professionals in the first year after birth. A conceptual, hierarchical model that considers history of abuse, risk and protective factors, in turn, is proposed to assess families for the potential of child maltreatment.     

Risk Factor Models for Adolescent Verbal and Physical Aggression Toward Fathers

Using a French-Canadian population-based longitudinal data set, we examine the impact of socioeconomic factors (paternal education and family structure); inherent individual factors (child gender and developmental trajectories of physical aggression from early to later childhood, problematic substance use), family environment (concurrent parent-child involvement, parental problematic substance use), and prospective and concurrent parenting process variables (mean parental supervision at puberty, concurrent punishment practices) as predictors of adolescent-directed aggression against fathers (in the last 6 months). A childhood behavioral pattern characterized by physical aggression showed the highest risk of adolescent-directed verbal and physical aggression toward fathers, regardless of sex. In terms of parental practices, verbal (and not corporal) punishment in the last 6 months significantly predicted aggression toward fathers. A childhood life-course of violence is likely to culminate in aggression toward fathers during adolescence. Beyond this risk, it seems that harsh verbal punishment by parents builds up the odds of child-directed aggression against fathers.     

社会主义政治的实践本质

社会主义政治在本质上是实践的。因此,应当以马克思主义实践的观点和方法研究社会主义政治现实基础和运动过程,说明这个运动过程的历史逻辑、价值趋向和人在政治历史中的能动作用,描绘人的政治活动在理论批判、政治决策、政治制度建构和变革诸方面的展开。相对于政治实践和现实的政治关系而言,政治观念、政治制度不是本原,不是政治研究的基本前提和出发点。当代中国的马克思主义政治理论应当研究中国社会主义政治实践提出的现实问题。     

中成药治疗儿童注意缺陷多动障碍疗效和安全性的系统评价

目的 系统评价中成药治疗儿童注意缺陷多动障碍的疗效和安全性。方法 检索中国知网、万方数据库、维普网、中国生物医学文献服务系统、PubMed、Cochrane Library、PsycINFO、Embase中所有关于中成药治疗儿童注意缺陷多动障碍的随机对照试验。根据预先设定的标准由两名研究者独立筛选,使用Review Manager 5.3软件进行纳入研究的偏倚风险评估和Meta分析。结果 最终23项研究共2 314个对象被纳入数据分析,未发现中成药与安慰剂比较的研究。中成药组与哌甲酯组的总有效率比较,差异无统计学意义（RR=1.06,95% CI为0.99～1.13,P=0.08）,但中成药组的不良反应总发生率低于哌甲酯组,差异有统计学意义（RR=0.14,95% CI为0.08～0.24,P<0.000 01）。中成药联合哌甲酯组总有效率高于哌甲酯组,差异有统计学意义（RR=1.17,95% CI为1.07～1.29,P=0.000 5）;两组不良反应总发生率的差异无统计学意义（RR=0.53,95% CI为0.24～1.17,P=0.11）。结论 中成药治疗儿童注意缺陷多动障碍疗效良好且不良反应少,但仍需要设计更合理的高质量随机对照研究,尤其是与安慰剂对照的研究来证实。     

The challenges of fractionalized property rights in public‐private hybrid organizations: The good,the bad,and the ugly

Policy designers seeking to harness profit‐driven efficiency for public purposes are increasingly creating organizations with fractionalized property rights that distribute “ownership” among public and private actors. The resulting hybrids are quite diverse, including mixed enterprises, public‐private partnerships, social entrepreneurship organizations, government‐sponsored enterprises, and various other hybrid forms. Marrying public purposes to private sector efficiency and strategic flexibility provides a tempting rationale for mixing public and private owners in hybrid organizations. Because public‐private hybrids involve fractionalized property rights, however, they exhibit tension among owners over both strategy and, more importantly, goals. To understand public‐private hybrids, we assess them in terms of six dimensions of property rights: fragmentation of ownership, clarity of allocation, cost of alienation, security from trespass, credibility of persistence, and autonomy (of both owners and managers). The unclear allocation of fractionalized ownership rights facilitates the appropriation of financial residuals and asset ownership opportunistically. Other weaknesses in the property rights configurations of public‐private hybrids create managerial dissonance or opportunistic behavior that typically leads to a narrowing of goals, but sometimes also to organizational failure.     

DO PARENTS MATTER IN CREATING SELF‐CONTROL IN THEIR CHILDREN? A GENETICALLY INFORMED TEST OF GOTTFREDSON AND HIRSCHI'S THEORY OF LOW SELF‐CONTROL*

Gottfredson and Hirschi's general theory of crime (1990) has generated an abundance of research testing the proposition that low self‐control is the main cause of crime and analogous behaviors. Less empirical work, however, has examined the factors that give rise to low self‐control. Gottfredson and Hirschi suggest that parents are the sole contributors for either fostering or thwarting low self‐control in their children, explicitly discounting the possibility that genetics may play a key role. Yet genetic research has shown that ADHD and other deficits in the frontostriatal system are highly heritable. Our research thus tests whether “parents matter” in creating low self‐control once genetic influences are taken into account. Using a sample of twin children we find that parenting measures have a weak and inconsistent effect. We address the conceptual and methodological issues associated with the failure to address genetic influences in parenting studies.     

论犯罪心理痕迹的研究利用

犯罪心理痕迹是犯罪人犯罪心理及其行为活动的产物和反映。依据犯罪行为与犯罪心理及其有关因素之间关系的心理学原理对其进行研究利用 ,对分析案情、刻画罪犯、确定侦查方向和范围有着重要的作用。因此 ,要重视和开展犯罪心理痕迹的研究利用。