同一个体发毛角蛋白电泳谱型的分析

用SDS -PAGGE对收集到的 2 0例人体表毛发 (头发、阴毛、腋毛、腿毛 )角蛋白组分进行了分析。结果表明 ,同一个体毛发角蛋白电泳谱型基本相同 ,用激光光密度仪对电泳凝胶板扫描后证实 ,同一个体毛发角蛋白组分相对百分含量也无明显差异 ;人头部不同部位 (顶部、左侧、右侧、额部、枕部 )头发角蛋白的电泳谱型和角蛋白组分相对百分含量也基本相同。同一个体毛发角蛋白组分的分析 ,可为法医物证学鉴定中的毛发个人识别提供重要的依据。     

The business judgment rule and other protections for the conduct of not-for-profit directors

The authors review the Business Judgment Rule as applied to a not-for-profit director's duty of care, with particular emphasis on the different forms of state statutory liability shields that serve to enhance the protections of the Rule. They also examine current trends in enforcement of breach of fiduciary duty of care standards, and provide a series of specific recommendations for not-for-profit boards to consider implementing as a means of increasing the likelihood of affording such protections to individuals serving as directors.     

Memories of half a life ago

A study of the recollections of childhood of a 12-year-old girl is placed in the context of developmental perceptions of time. Specifically, the transition from wishful to more realistic perceptions of the future is discussed, along with the growing capacity of the older child to incorporate experiences of the past into the present. The role of time perception in the formation of identity is presented from the perspective of psychological maturation and the growing comprehension of social roles and personal competence.In order to preserve confidentiality, I have used a fictitious name for a real family. In addition, the family has granted permission to publish this paper.Received B. A. from Harvard University and M.A. and Ph.D. from the University of Chicago in the Department of Sociology. Interests lie in the areas of social theory, poverty, psychotherapy, youth and adolescence, and perceptions of time.     

Adolescents as mothers: An interdisciplinary approach to a complex problem

Pregnancy among adolescents, and especially among low-income adolescents, represents a high-risk situation from multiple points of view. When compared to data for the population at large, obstetrical outcome is worsened, subsequent educational attainment is poor, social prognosis is guarded, and repeat unwanted pregnancies are common. The surviving infants, similarly have relatively high incidences of medical and developmental problems. In recent years, comprehensive interdisciplinary programs have been organized to offer more meaningful help to these individuals. The present report describes the authors' 5-year experience with one early intensive program. Considerable medical, educational, and social successes have been noted. The results are especially striking when contrasted with the authors' current experience with an improving but still more fragmented and less successful program. Findings concerning infant development and the mother-infant interaction are also noted. Finally, issues related to the achievement of successes and the persistence of problems after provision of more adequate comprehensive services are discussed.This study was supported in part by Grant No. 03-H-000-079-03-0, Maternal and Child Health Service, H.S.M.H.A., H.E.W.While on the faculty of the State University of New York, College of Medicine at Syracuse, was a founder and the first medical director of the YMED program.Specialty is Developmental Psychology, and research interests concern infant and early child development and the effects of children on parents. While on the faculty of Cornell University, served as a consultant to the YMED program.Project director of the high-risk program.While on the faculty of the State University of New York, College of Medicine at Syracuse, was obstetrical director of the YMED program.     

Interpersonal trust and disaffected high school youth

The study consisted of two parts. First, a new scale of interpersonal trust for adolescents was constructed using a representative sample of 70 students from a community high school. Second, the hypothesis was tested that disaffected youth compared to the more conventional would show less interpersonal trust. Two matched groups of 57 students each were employed for the second part of the study. Results indicate that the new scale is a reliable and valid measure. Correlates of the scale disclose that trust is associated with interpersonal distance, certain developmental factors, and the quality of parent-adolescent relations. Results from the second part of the study tend to confirm the hypothesis in that greater trust scores were found among students with more conventional beliefs.This study was partly supported by NIMH Grant No. MH9210, Ford Foundation Grant No. 69-0264B, and the Jessie and C. Clement Stone Foundation.Received his Ph.D. from the University of Kansas. Currently working on personality and clinical problems of adolescents and adults.Recieved his Ph.D. from the University of Michigan. Plans to continue his work of program development in the area of affect education in secondary schools.Received his Ph.D. from Harvard University. Current work is in the area of community mental health.     

Modeling Duration Dependence

As applications of duration analysis have burgeoned in politicalscience, scholars have become increasingly aware of the potentialsubstantive importance of duration dependence: the extent towhich the conditional hazards of the events of interest arerising or falling over time. Here I discuss the issue of durationdependence, focusing on the distinction between "spurious" dependencedue to unobserved heterogeneity and "true" duration dependencedue to state dependence in the process of interest. I presenta simple extension of a commonly used parametric duration model—theWeibull model—which allows researchers to assess the influenceof causal variables on the nature and extent of duration dependencein their data. I then illustrate the application of this "generalizedWeibull" model using data on the duration of international alliances.