Adolescents’ Educational Outcomes: Racial and Ethnic Variations in Peer Network Importance

Little attention has been paid to the role of peer social capital in the school context, especially as a predictor of adolescents’ academic outcomes. This study uses a nationally representative (N = 13,738, female = 51%), longitudinal sample and multilevel models to examine how peer networks impact educational achievement and attainment. Results reveal that, in addition to those factors typically associated with academic outcomes (e.g., school composition), two individual-level peer network measures, SES and heterogeneity, had significant effects. Although educational attainment was generally worse in low SES schools, for all ethnic groups higher attainment was associated with attending schools with higher concentrations of minority students. At the individual level, however, membership in integrated peer networks was negatively related to high school graduation for Asians, Latinos, and non-Hispanic whites, and to GPA for Asians and Latinos, as only African-American achievement increased in more racially/ethnically heterogeneous peer networks. Our results suggest that co-ethnic and co-racial peer friendship networks should not be viewed as obstacles to the educational accomplishments of today’s youth. In fact, in many cases the opposite was true, as results generally support the ethnic social capital hypothesis while providing little corroboration for oppositional culture theory. Results also suggest that co-racial and co-ethnic ties may mediate the negative effects of school choice, or more specifically of between-school socioeconomic segregation. Consequently, we conclude that school policies aimed at socioeconomic desegregation are likely to beneficially affect the academic outcomes of all race/ethnic groups.

Co‐parenting in a Highly Conflicted Separation/Divorce: Learning about Parents and their Experiences of Parenting Coordination,Legal, and Mental Health Interventions

Sixty high‐conflict separated/divorced co‐parents completed surveys investigating characteristics and dynamics (narcissism, empathy, conflict) that were examined in relation to co‐parenting style and parents' experiences of parenting coordination, legal, and mental health interventions. Study findings for this sample did not support common notions found in the literatures on parenting coordination and high‐conflict divorce that suggest these parents are often narcissistic or low in empathy. Findings pertaining to all high‐conflict participant experiences revealed the presence of common elements across aspects of practitioners and interventions with which they were both satisfied and dissatisfied.     

雷经天新民主主义司法思想论

雷经天的司法思想是新民主主义司法思想的典型体现。苏维埃司法的政法传统、边区司法正规化改革思想及马克思主义理论的中国化潮流是其思想的主要来源。围绕新民主主义司法观，雷经天提出了在司法组织上贯彻民主集中制，在法官队伍建设中加强工农干部与知识分子干部的融合，在六法全书援用中将政治立场与司法实践适度分离，在司法程序中坚持司法民主、发展司法便利等系列观点。其思想贯穿着革命性和实践性思维的特点，是时代背景与个人经验综合作用的产物。     

Patterns of Middle School Adjustment and Ninth Grade Adaptation of Rural African American Youth: Grades and Substance Use

The transition to high school has been identified as a potentially difficult time in adolescents’ lives. Reductions in both academic and social functioning often accompany this transition. While these effects have been documented in urban youth, the move to high school has not been extensively studied in rural minority youth. Toward that end, the academic grades and substance use in ninth grade of 447 (184 male and 263 female) African-American adolescents from two rural counties in a state in the deep South were examined in relation to configurations of adaptation from sixth through eighth grade. Results indicate that individual with consistently positive patterns across middle school had higher grades and lower rates of substance use compared to individuals with persistent difficulties or those that transitioned to problem behavior. Many individuals who improved in their patterns of adaptation had relatively high grades, but also rather high rates of substance use in the ninth grade. David B. Estell is an assistant professor of educational psychology at Indiana University Bloomington. He received his PhD in Developmental Psychology from the University of North Carolina at Chapel Hill. His major research interests include peer relations and the development of aggression. Thomas W. Farmer is an associate professor of education at Pennsylvania State University and director of the National Research Center on Rural Education Support. He received his PhD in Special Education from University of North Carolina at Chapel Hill. His major research interests include peer relations and the development of aggression in students with and without special needs. Matthew J. Irvin is a research scientist at the Center for Developmental Science at the University of North Carolina at Chapel Hill. He received his PhD in Educational Psychology from the University of North Carolina at Chapel Hill. His major research interests include resilience and student engagement. Jana H. Thompson is a research associate at the Center for Developmental Science at the University of North Carolina at Chapel Hill. Her research interests include peer social relations and developmental transitions into early adolescence. Bryan C. Hutchins is a research assistant at the Center for Developmental Science at the University of North Carolina at Chapel Hill. He is also a graduate student in the Educational Psychology, Measurement, and Evaluation Program at UNC. His research interests include child and adolescent social development and school based emotional and behavioral interventions and prevention programs. Erin M. McDonough is currently a doctoral candidate in School Psychology at the University of North Carolina at Chapel Hill. She received her Bachelor of Arts degree in Psychology from Emory University. As a research assistant at the Center for Developmental Science, she has been able to explore her interests in student achievement as well as rural education. Another major research interest of hers is school-based mental health.     

损伤皮肤中白三烯B_4含量测定与损伤时间推断

本文作者利用高压液相色谱,快速检测大鼠皮肤切创创缘组织中白三烯B_4含量。结果发现,生前各损伤时间组创缘中白三烯B_4含量明显升高,且在1小时内与损伤时间有一定线性关系;死后损伤标本未见白三烯B_4含量升高。由此表明白三烯B_4含量测定,对推断生前1小时内的损伤时间有重要价值。高压液相色谱能快速、准确地检测损伤组织中的白三烯B_4。     

从"高空了望"伏击法到建构"立体预警"防控模式的思考

根据长寿地区“高空了望”伏击法形成的背景条件、操作模式及实际成效来看,“高空了望”伏击法具有推广价值,与巡逻、设卡等传统手段有机结合,具有构建“立体预警”防控模式的优势。     

模糊方法在公安工作中操作性的基础及运用

模糊性是公安工作中实际存在的现象,而模糊方法在一定条件下也是科学的方法。用模糊方法来研究、分析公安实际工作中的模糊现象,从而认清模糊现象的实存性,把模糊引入精确,使各类模糊内容、方法更确切,以达到在实际工作中提高工作效率的目的。     

贯彻实施新的警务战略的几个关键点

要贯彻实施新的警务战略,做到“抓小抓紧抓早”和“抓小防大”,达到“最小投入、最优组合、最佳效能”的要求,必须找准切入点,即落实工作责任制;把握结合点,即“打防结合,以防为主”;强固支撑点,即全面加强基层基础工作;明确归宿点,即全心全意为人民服务。     

A comparison of the use of visible microspectrometry and high performance thin layer chromatography for the discrimination of aqueous inks used in porous tip and roller ball pens

Ink lines made by porous tip and roller ball pens have been examined by high performance thin layer chromatography (HPTLC) and by transmission microspectrophotometry (VM) in the visible region. Better discrimination between apparently similar coloured inks was obtained with HPTLC but VM has value as an additional technique for ink examination.     

The Role of EU Internal Policies in Implementing Greenhouse Gas Mitigation Options to Achieve Kyoto Targets

This paper reviews the role of internal European Union (EU) policies and measures in implementing the target for greenhouse gas mitigation in the Kyoto Protocol. It starts with a discussion of the EU Burden Sharing Agreement, which distributes the target between Member States. This leads to a review of the appropriate level of implementation of policies, i.e. at the EU level or Member State level. There is a role for the flexible mechanisms of the Protocol, particularly emission permit trading, in complementing Member State policies at the EU level. The implementation is to be done against the background of three major factors which may have an important bearing on the policies: the probable long-term requirement of substantial reductions in greenhouse gas emissions a changing structure of energy markets, following liberalisation of the gas and electricity markets EU enlargement to include economies in transition with the potential for further substantial reductions in emissions.The paper concludes with a discussion of ancillary benefits of the policies that may be substantial and a summary of the position as regards the "unfinished business" of the Protocol to be discussed at the Conference of the Parties in the Hague in November 2000.