用α-珠旦白-3’HVR探针研究DNA指纹

用α-珠蛋白-3’HVR探针,经Southern印迹法,对100名不相关个体及4个家系的32名相关个体的DNA指纹进行了检测,所产生的DNA图谱具有高度的个体特异性,在被测的所有个体中无一相同。经统计学计算表明,任意两个个体DNA指纹图重合率为10~(-11)。家系分析毒明,DNA片段严格按照孟德尔方式遗传。该探针的应用,将在法医学亲子鉴定和个人同一认定中发挥重要的作用。     

The consequences of respondent attrition in panel studies: A simulation based on the Rochester youth development study

Subject attrition is a potentially serious threat to the validity of inferences drawn from panel studies of delinquency and drug use. Prior assessments of this issue produce somewhat conflicting results, with some finding that respondents who leave the panel have higher rates of delinquency and drug use than those who remain, while other studies report little or no differential attrition. Despite these findings, there has been virtually no examination of the extent to which respondent attrition can bias substantive findings in panel studies of delinquency and drug use. The present article addresses this issue by simulating higher levels of attrition in an ongoing panel study that has a low rate of attrition and little differential attrition. It finds that failure to include more elusive respondents (those who are more mobile) would bias estimates of prevalence and frequency of delinquency and drug use as well as results from basic regression analyses. Failure to include less cooperative respondents (those who require more contacts) produces similar, but somewhat smaller, differences. The methodological implications of the results are discussed.     

公安院校科研激励博弈分析

公安院校是我国公安科技的主要研究力量。目前公安院校普遍对教师的科研激励不够,缺乏健全的科研管理与制度措施。要运用组织行为学相关理论建立科研激励模型,结合博弈论分析公安院校教师在科研与教学,继续教育和科研项目等选择上的理性行为。     

A Comparison of Chinese and US College Students’ Crime and Crime Control Views

While there is a growing trend to look at criminal justice issues from an international perspective, there has been little literature examining differences in views of crime, criminals, punishment, and treatment between the citizens of the People’s Republic of China and the United States of America. Using data from 524 students at a large university in China and 484 students from a large public university in the USA this study found that, while US respondents were more likely to agree that crime was high in their country, Chinese respondents were more likely to feel that crime was the most serious social problem facing their society. Chinese respondents were more supportive of the death penalty for serious crimes but also were more supportive of rehabilitation of offenders in general. In addition, the study found similarities between students from the two countries in their views. The reasons behind the differences and similarities were explored.

Detection of visible and latent fingerprints using micro-X-ray fluorescence elemental imaging

Using micro-X-ray fluorescence (MXRF), a novel means of detecting fingerprints was examined in which the prints were imaged based on their elemental composition. MXRF is a nondestructive technique. Although this method requires a priori knowledge about the approximate location of a print, it offers a new and complementary means for detecting fingerprints that are also left pristine for further analysis (including potential DNA extraction) or archiving purposes. Sebaceous fingerprints and those made after perspiring were detected based on elements such as potassium and chlorine present in the print residue. Unique prints were also detected including those containing lotion, saliva, banana, or sunscreen. This proof-of-concept study demonstrates the potential for visualizing fingerprints by MXRF on surfaces that can be problematic using current methods.     

高等学校工商管理科研服务于教学的应用模式研究

本文论证了高等学校工商管理科研必须为教学服务的基本思想,强调教学、科研、生产、服务相结合;建立了工商管理科研服务于教学的基本原则,即服务性原则、需要性原则、应用性原则、创新性原则、科学性原则、可行性原则,并建立了工商管理科研服务于教学的科学而有效的服务渠道,从而建立了教学与科研互动的良性循环系统,即工商管理科研服务于教学的“123”应用模式。同时,构建了高等学校科研服务于教学的“12n”基本范式,即1个服务、2个需要、n条服务渠道的应用模式。     

理念与策略--社会工作教育中的教学、研究与社会服务

从通识性大学教育理念的变迁来看,社会工作教育者应树立教学、研究和社会服务并重的观念.在教学环节上,将教学看成一个认识飞跃、研究发展和推动科学进步的过程;在研究方面,注重研究的社会导向,通过"团队"来开展研究活动,并将研究成果带入课堂,丰富教学内容及推动"研究性学习"方式的建立;在社会服务方面,则要通过实习教学和督导活动、行动研究以及直接的社会服务,达到认识社会、参与社会服务发展和推广专业的目标.     

Prevention science,drug abuse prevention,and Life Skills Training: Comments on the state of the science

There has been tremendous growth in the field of prevention science over the past two decades. The defining features of contemporary prevention science are high quality empirical research using rigorous and well-established scientific methods, careful hyphothesis testing, and the systematic accumulation of knowledge. One area where substantial progress has been made is in our understanding of the etiology and prevention of tobacoo, alcohol, and illicit drug abuse. In this paper, we review the growth in prevention as a scientific enterprise, discuss advances in drug abuse prevention research, and review the effectiveness of one approach to the problem of adolescent drug abuse, the Life Skills Traning (LST) program, and the methodological strengths of the LST evaluation research. In addition, we provide a response to criticism regarding two types of data analysis in evaluation research, and show that these analyses can help address a number of important research questions with implications for theory and practice. First, the analysis of high fidelity subsamples can address research questions about the importance of program implementation fidelity; and second, composite measures of concurrent tobacco, alcohol, and marijuana use (i.e., polydrug use) are useful in testing research questions about program effects on more serious levels of drug involvement. With an increasing number of ramdomized controlled trials underway, the field of prevention science is contributing to a new generation of evidence-based approaches and policies that, if widely utilized, offer the potential of reducing the mortality and morbidity associated with a number of major health and social problems.     

How High-Yield Farming Saves Nature

High-yield farming—more agricultural output per acre of farmland—has been a boon to mankind and to nature. If today’s agricultural efficiency was the same as in the 1950s, the world would need three times the cropland to produce today’s food supply. That would mean that 15-16 million mi² of forest would have been destroyed—all the global forest area available today. Rising population and increased affluence will require a tripling of agricultural efficiency in the next 50 years if we are to protect wildlife at the same time. More investment in agricultural research and education will be required, but this is what produced the previous green revolution.