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951.
952.
Evaluation of trace evidence in the form of multivariate data   总被引:1,自引:0,他引:1  
Summary.  The evaluation of measurements on characteristics of trace evidence found at a crime scene and on a suspect is an important part of forensic science. Five methods of assessment for the value of the evidence for multivariate data are described. Two are based on significance tests and three on the evaluation of likelihood ratios. The likelihood ratio which compares the probability of the measurements on the evidence assuming a common source for the crime scene and suspect evidence with the probability of the measurements on the evidence assuming different sources for the crime scene and suspect evidence is a well-documented measure of the value of the evidence. One of the likelihood ratio approaches transforms the data to a univariate projection based on the first principal component. The other two versions of the likelihood ratio for multivariate data account for correlation among the variables and for two levels of variation: that between sources and that within sources. One version assumes that between-source variability is modelled by a multivariate normal distribution; the other version models the variability with a multivariate kernel density estimate. Results are compared from the analysis of measurements on the elemental composition of glass.  相似文献   
953.
Presidential Address on ALTRUISM AND SOCIOLOGY   总被引:1,自引:0,他引:1  
This article concerns the study of altruism. Highlights of the research history of altruism in sociobiology, psychological social-psychology, and sociology are reviewed. Examples from the author's work on kidney and bone-marrow donation are interwoven with this history. The sociological mechanisms producing altruism, particularly normative obligation, are emphasized along with the psychological mechanisms (e.g., empathy). The need for better integration across subareas in sociology is discussed. In addition, it is concluded that some scientific work significantly trivializes altruism.  相似文献   
954.
DETECT     
DETECT is an inexpensive, easy to use, general-purpose, Monte Carlo simulation program for IBM and compatible personal computers. It can be used to quickly analyze fault trees or functions of random variables. DETECT provides a wide variety of input distributions to choose from and a dependency (correlation) option. The result of the analysis is a probability distribution over the variable of interest. We look forward to further improvements (e.g., graphics, full-screen editing, ability to inspect intermediate results) that will make DETECT even more useful and attractive.  相似文献   
955.
The emergence of service–learning in higher education and the renewed emphasis on community involvement presents colleges and universities with opportunities to develop campus–community partnerships for the common good. These partnerships can leverage both campus and community resources to address critical issues in local communities. Campus–community partnerships are a series of interpersonal relationships between (a) campus administrators, faculty, staff, and students and (b) community leaders, agency personnel, and members of communities. The phases of relationships (i.e., initiation, development, maintenance, dissolution) and the dynamics of relationships (i.e., exchanges, equity, distribution of power) are explored to provide service–learning instructors and campus personnel with a clearer understanding of how to develop healthy campus–community partnerships.  相似文献   
956.
A sample of 1,004 eighth and tenth grade students in twenty-three small Central/East Texas communities was assessed to determine 1) their perception of the number of their friends who use drugs, 2) the amount of information they received about drugs from their friends, and 3) the connection between those perceptions and drug use. A multiple regression model which included grade, gender, the degree to which friends are perceived to use drugs and the amount of information about drugs received from friends explained 39 percent of the variance in the degree to which rural adolescents were involved in drug use. An item specific analysis of the subcomponents of these composite variables explained 44 percent of the variance in the degree to which rural adolescents were involved in drug use. This same four-factor model accurately classified over 81 percent of non-drug-users and 67 percent of users using discriminant analysis. Students who perceived a higher degree of drug use among their friends and who received more information about drugs from their friends used drugs more frequently. Lower marijuana use in these rural areas as compared to the nation, both as a peer perception and as a fact, may protect these students to a degree from broader patterns of drug use. The findings of this study support the theory that peer pressure is related to drug abuse, even in rural areas.  相似文献   
957.
Happy or disturbing events may occur in a therapist's life during the course of treatment that intrude on the therapeutic process whether or not their true nature is disclosed to the patient. Therapists are not immune from experiencing acute, chronic, and even terminal illnesses, divorce, remarriage, adopting a child, mourning the death of a parent or significant other, or major accomplishments. In many instances such events affect the treatment process by disrupting appointments, necessitating sudden absences, restricting a therapist's emotional availability and physical stamina, or altering the therapist's mood and affect. In other instances, patients may be aware of such events, at least unconsciously, because of subtle changes in the therapist. Drawing on self psychology and intersubjectivity this paper explores the reasons for therapist self-disclosure of these events based on an assessment of the patient's developmental needs and the nature of the transference. It will discuss ways of making such disclosures therapeutic.  相似文献   
958.
Absenteeism, turnover and disability, and relationships between them have been studied among city bus drivers in the Netherlands. The theoretical framework for the study was a cumulative process model of work and health. Absenteeism among these drivers was two to three times as high as the national average, while the risk of disablement was more than twice as high as the risk for male Dutch civil servants in general. Bus drivers who had to leave their job for medical reasons did so at a younger age than other groups of civil servants. The main conditions leading to disablement related to the back, tendons and joints (35%), mental disorders (35%) and cardiovascular diseases (12%). It was shown that long-term absenteeism is a strong precursor of future disability. The research suggests a work-related process of progressive deterioration of health and well-being over a reasonably long period of time. Driving city buses seems to be an occupation with high risks for health and well-being.  相似文献   
959.
CIGARETTE TAXES AND THE MASTER SETTLEMENT AGREEMENT   总被引:1,自引:0,他引:1  
In 1998, 46 states and the four major tobacco companies entered into the Master Settlement Agreement (MSA), which stipulated that the tobacco companies pay the states $206 billion over the next several years. Mean cigarette excise taxes rose substantially, nearly 90%, between 1998 and 2002. The goal of our empirical analysis is to assess whether the changes in cigarette excise taxes can be attributed to litigation brought by the states and the resulting settlements. Using a panel data difference-in-difference approach, the evidence suggests that litigation increased excise taxes: state cigarette excise taxes were approximately $0.10 higher post-MSA. (JEL H2, I1 )  相似文献   
960.
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