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Peer Groups (peer + groups)
Selected AbstractsTowards enabling peer-to-peer GridsCONCURRENCY AND COMPUTATION: PRACTICE & EXPERIENCE, Issue 7-8 2005Geoffrey Fox Abstract In this paper we propose a peer-to-peer (P2P) Grid comprising resources such as relatively static clients, high-end resources and a dynamic collection of multiple P2P subsystems. We investigate the architecture of the messaging and event service that will support such a hybrid environment. We designed a distributed publish,subscribe system NaradaBrokering for XML-specified messages. NaradaBrokering provides support for centralized, distributed and P2P (via JXTA) interactions. Here we investigate and present our strategy for the integration of JXTA into NaradaBrokering. The resultant system naturally scales with multiple Peer Groups linked by NaradaBrokering. Copyright © 2005 John Wiley & Sons, Ltd. [source] The impact of after-school programs on the routine activities of middle-school students: Results from a randomized, controlled trial,CRIMINOLOGY AND PUBLIC POLICY, Issue 2 2009Amanda Brown Cross Research Summary Unsupervised after-school time for adolescents is a concern for parents and policymakers alike. Evidence linking unsupervised adolescent socializing to problem behavior outcomes heightens this concern among criminologists. Routine activities theory suggests that, when youth peer groups congregate away from adult authority, both opportunity for and motivation to engage in deviant acts increase. After-school programs are a possible solution to unsupervised teen socializing during afternoon hours and are much in demand. However, empirical research has yet to test the relationship between the availability of after-school programs and youth routine activities. This study presents evidence from a multisite, randomized, controlled trial of an after-school program for middle-school students in an urban school district. Policy Implications Youth in the treatment group engaged in less unsupervised socializing after school than youth in the control group but not as much less as would be expected if the after-school program was providing consistent supervision to youth who would otherwise be unsupervised. Additional analyses examined why the influence of the after-school program was not more pronounced. We found that, although program attendance was related to decreases in unsupervised socializing, the program did not attract many delinquency-prone youths who were unsupervised, which suggests that the students most in need of the program did not benefit. Furthermore, data obtained from a mid-year activity survey revealed that youth in the study were highly engaged in a variety of after-school activities. The addition of the after-school program into the mixture of available activities had little effect on the frequency with which students participated in organized activities after school. [source] The effects of alcohol expectancies on drinking behaviour in peer groups: observations in a naturalistic settingADDICTION, Issue 9 2005Sander M. Bot ABSTRACT Aims To study the functionality of alcohol expectancies in predicting drinking behaviour in existing peer groups of young adults in a ,naturalistic' setting. Design and setting Young adults were invited to join an experiment with their peer group in a bar annex laboratory. During a ,break' of 50 minutes in this experiment, their activities, social behaviour and drinking behaviour were observed with digital video and audio equipment. Participants Twenty-eight peer groups were involved in this study. A peer group consisted of seven to nine people, with relationships ranging from intimate relations and close friendships to being acquaintances. A total of 238 participants were involved. Measurements Information of the drinking behaviour from observations and questionnaire data on alcohol expectancies provide the opportunity to look at how and which expectancies are related to actual drinking patterns. Multiple regression and multi-level analyses were applied. Findings Expectancies on the positive and arousing effects of alcohol consumption were related to alcohol consumption in a naturalistic, social drinking situation, in addition to group effects of drinking. Expectancies on the negative and sedative effects of drinking, however, were not related to drinking. Conclusions The findings indicate that among young adults observed in a peer group and naturalistic drinking setting, positive expectancies about the effects of alcohol and expectancies about the effects of alcohol on arousal are related positively to drinking level. [source] Investigating the nature of formal social support provision for young mothers in a city in the North West of EnglandHEALTH & SOCIAL CARE IN THE COMMUNITY, Issue 6 2006Angela McLeod BA (Hons) MPH Abstract Young mothers often require support to remain socially ,included' after becoming pregnant and this, in its turn, could protect their health. In this context, new policy initiatives aimed at tackling social exclusion, such as those implemented under the National Teenage Pregnancy Strategy, could be working to build social support mechanisms. The present paper addresses the issue of whether statutory services do in fact deliver ,social inclusion', through the provision of appropriate social support for young mothers. Data are drawn from semistructured interviews with service providers from a variety of different settings. The questionnaire was structured around an established model of social support, developed by M. Barrera, called the Inventory of Socially Supportive Behaviours. The study took place in a deprived inner city in North West England. Eleven participants were interviewed from seven separate organisations. The findings indicate that there were well-developed referral systems between services, with services adopting a social model of health. Much informational and emotional support was provided. What was less clear is how services are enabling social support to be developed amongst peer groups accessing the services particularly at community level. It is questionable to what extent services are able to foster the development of social support through social activities and support groups, and even whether it is appropriate to expect them to do so. In some sense, services go some way to delivering social inclusion, in that they are providing advice about income, housing and other opportunities. However, services appear to be missing an opportunity to foster social inclusion through the lack of development of supportive networks amongst groups of peers, which may have implications for the health of young mothers. [source] On the Construct Validity of Integrity Tests: Individual and Situational Factors as Predictors of Test PerformanceINTERNATIONAL JOURNAL OF SELECTION AND ASSESSMENT, Issue 3 2001Michael D. Mumford Although integrity tests are widely applied in screening job applicants, there is a need for research for examining the construct validity of these tests. In the present study, a theoretical model examining the causes of destructive behavior in organizational settings was used to develop background data measures of individual and situational variables that might be related to integrity test scores. Subsequently, 692 undergraduates were asked to complete these background data scales along with (a) two overt integrity tests , the Reid Report and the Personnel Selection Inventory, and (b) two personality-based measures , the delinquency and socialization scales of the California Psychological Inventory. When scores of these measures were correlated with and regressed on the background data scales, it was found that relevant individual variables, such as narcissism and power motives, and relevant situational variables, such as alienation and exposure to negative peer groups, were related to scores on both types of integrity tests. However, a stronger pattern of validity evidence was obtained for the personality-based measures and, in all cases, situational variables were found to be better predictors than individual variables. The implications of these findings for the validity of inferences drawn from overt and personality-based integrity tests are discussed. [source] Utilizing Peer Nominations in Middle School: A Longitudinal Comparison Between Complete Classroom-Based and Random List MethodsJOURNAL OF RESEARCH ON ADOLESCENCE, Issue 2 2010Amy Bellmore Although peer nominations provide invaluable data on social status and reputations of classmates, the large size and organizational structure of secondary schools pose a practical challenge to utilizing nomination methods. Particularly problematic is determining the appropriate reference group when students are no longer in self-contained classrooms. In the current study, we compared a random list method as an alternative to complete classroom-based or grade list peer nominations. In a 3-year longitudinal study of 2,307 middle school students, the temporal stability and construct validity of the method were assessed regarding peer acceptance, rejection, coolness, aggression, and victimization. The findings suggested that the random list procedure provides a feasible method to study large peer groups in secondary school settings. [source] The Association of Sexual Experience with Attitudes, Beliefs, and Risk Behaviors of Inner-City AdolescentsJOURNAL OF RESEARCH ON ADOLESCENCE, Issue 1 2006Ellen Johnson Silver We compared knowledge, attitudes, and demographic characteristics of 630 sexually experienced and 422 inexperienced inner-city adolescents aged 14,17 years. Sexual experience was associated with indicators of risk previously reported in the literature: male gender, older age, single-family home, smoking, drinking, and poorer academic performance. We found lower HIV knowledge in sexually inexperienced youth, which suggested an area of vulnerability compared with sexually active teens. However, most inexperienced adolescents intended to remain virgins for the next 6 months, most had peer groups they also perceived to be virgins, and they were more positive and confident about remaining abstinent. Differences between the groups suggest there may be benefits to developing intervention programs targeted to their different strengths and weaknesses. [source] Financial Indicators for Critical Access HospitalsTHE JOURNAL OF RURAL HEALTH, Issue 3 2006George H. Pink PhD ABSTRACT:,Context: There is a growing recognition of the need to measure and report hospital financial performance. However, there exists little comparative financial indicator data specifically for critical access hospitals (CAHs). CAHs differ from other hospitals on a number of dimensions that might affect appropriate indicators of performance, including differences in Medicare reimbursement, limits on bed size and average length of stay, and relaxed staffing rules. Purpose: To develop comparative financial indicators specifically designed for CAHs using Medicare cost report data. Methods: A technical advisory group of individuals with extensive experience in rural hospital finance and operations provided advice to a research team from the University of North Carolina at Chapel Hill. Twenty indicators deemed appropriate for assessment of CAH financial condition were chosen and formulas determined. Issues 1 and 2 of the CAH Financial Indicators Report were mailed to the chief executive officers of 853 CAHs in the summer of 2004 and 1,092 CAHs in the summer of 2005, respectively. Each report included indicator values specifically for their CAH, indicator medians for peer groups, and an evaluation form. Findings: Chief executive officers found the indicators to be useful and the underlying formulas to be appropriate. The multiple years of data provide snapshots of the industry as a whole, rather than trend data for a constant set of hospitals. Conclusions: The CAH Financial Indicators Report is a useful first step toward comparative financial indicators for CAHs. [source] Assessing and Documenting General Competencies in Otolaryngology Resident Training Programs,THE LARYNGOSCOPE, Issue 5 2006Rick M. Roark PhD Abstract Objectives: The objectives of this study were to: 1) implement web-based instruments for assessing and documenting the general competencies of otolaryngology resident education, as outlined by the Accreditation Council of Graduate Medical Education (ACGME); and 2) examine the benefit and validity of this online system for measuring educational outcomes and for identifying insufficiencies in the training program as they occur. Methods: We developed an online assessment system for a surgical postgraduate education program and examined its feasibility, usability, and validity. Evaluations of behaviors, skills, and attitudes of 26 residents were completed online by faculty, peers, and nonphysician professionals during a 3-year period. Analyses included calculation and evaluation of total average performance scores of each resident by different evaluators. Evaluations were also compared with American Board of Otolaryngology-administered in-service examination (ISE) scores for each resident. Convergent validity was examined statistically by comparing ratings among the different evaluator types. Results: Questionnaires and software were found to be simple to use and efficient in collecting essential information. From July 2002 to June 2005, 1,336 evaluation forms were available for analysis. The average score assigned by faculty was 4.31, significantly lower than that by nonphysician professionals (4.66) and residents evaluating peers (4.63) (P < .001), whereas scores were similar between nonphysician professionals and resident peers. Average scores between faculty and nonphysician groups showed correlation in constructs of communication and relationship with patients, but not in those of professionalism and documentation. Correlation was observed in respect for patients but not in medical knowledge between faculty and resident peer groups. Resident ISE scores improved in the third year of the study and demonstrated high correlation with faculty perceptions of medical knowledge (r = 0.65, P = .007). Conclusions: Compliance for completion of forms was 97%. The system facilitated the educational management of our training program along multiple dimensions. The small perceptual differences among a highly selected group of residents have made the unambiguous validation of the system challenging. The instruments and approach warrant further study. Improvements are likely best achieved in broad consultation among other otolaryngology programs. [source] Peer Group Socialization of Homophobic Attitudes and Behavior During AdolescenceCHILD DEVELOPMENT, Issue 6 2007V. Paul Poteat A social developmental framework was applied to test for the socialization of homophobic attitudes and behavior within adolescent peer groups (Grades 7,11; aged 12,17 years). Substantial similarity within and differences across groups were documented. Multilevel models identified a group socializing contextual effect, predicting homophobic attitudes and behavior of individuals within the group 8 months later, even after controlling for the predictive effect of individuals' own previously reported attitudes and behavior. Several group characteristics moderated the extent to which individuals' previously reported attitudes predicted later attitudes. Findings indicate the need to integrate the concurrent assessment of individual and social factors to inform the construction of more comprehensive models of how prejudiced attitudes and behaviors develop and are perpetuated. [source] | |||||||||||||