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Jeff R. Temple Ryan C. Shorey Paula Fite Gregory L. Stuart Vi Donna Le 《Journal of youth and adolescence》2013,42(4):596-606
The prevention of teen dating violence is a major public health priority. However, the dearth of longitudinal studies makes it difficult to develop programs that effectively target salient risk factors. Using a school-based sample of ethnically diverse adolescents, this longitudinal study examined whether substance use (alcohol, marijuana, and hard drugs) and exposure to parental violence predicted the perpetration of physical dating violence over time. 1,042 9th and 10th grade high schools students were recruited and assessed in the spring of 2010, and 93 % of the original sample completed the 1-year follow-up in the spring of 2011. Participants who had begun dating at the initial assessment and who self-identified as African American (n = 263; 32 %), Caucasian (n = 272; 33 %), or Hispanic (n = 293; 35 %) were included in the current analyses (n = 828; 55 % female). Slightly more than half of the adolescents who perpetrated dating violence at baseline reported past year dating violence at follow-up, relative to only 11 % of adolescents who did not report perpetrating dating violence at baseline. Structural equation modeling revealed that the use of alcohol and hard drugs at baseline predicted the future perpetration of physical dating violence, even after accounting for the effects of baseline dating violence and exposure to interparental violence. Despite differences in the prevalence of key variables between males and females, the longitudinal associations did not vary by gender. With respect to race, exposure to mother-to-father violence predicted the perpetration of dating violence among Caucasian adolescents. Findings from the current study indicate that targeting substance use, and potentially youth from violent households, may be viable approaches to preventing the perpetration of teen dating violence. 相似文献
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Sophie M. Colleau Kevin Glynn Steven Lybrand Richard M. Merelman Paula Mohan James E. Wall 《Political Behavior》1990,12(4):385-402
The authors explored the symbolic racism construct to determine whether discrimination in the evaluation of political candidates can be attributed to a combination of traditional values and antiblack affect as suggested by Sears. Using an experimental design where candidate race was manipulated in three conditions, they found that differential racial attributions do operate in the evaluation of political candidates. Contrary to expectations, however, no antiblack affect was found to be at work in the evaluation of the black candidate. Findings are discussed in the framework of contemporary assumptions of research on racial reasoning. 相似文献
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The final point in the nuclear fuel cycle has always been the eventual retirement, decommissioning, of the 81 commercial nuclear power reactors presently in existence. This eventual retirement has been thought to be an issue of the future, because the large plants, built in the 1960s and 1970s. were assumed to have an expected operating life of 30 to 40 years. However, the reality is that several commercial reactors already have been decommissioned, and numerous others will soon reach maturity. This article examines decommissioning of nuclear power plants from a public policy–rather than a technical–perspective. A number of questions are addressed concerning the policy implications associated with decommissioning. The findings of the study are based on survey data from the utilities, an examination of NRC documents, interviews with NRC staff scientists, and site visits to several decommissioned plants. 相似文献
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Monika H. Seltenhammer Ph.D. Christine Fitzl M.Sc. Ingo Wieser Ph.D. M.Sc. Reinhard Binder B.Sc. Pia Paula M.D. Daniele U. Risser M.D. 《Journal of forensic sciences》2014,59(5):1364-1367
Forensic ballistics is the study of bullet trajectory and consists of determining gunshot residue (GSR) to identify bullet holes. Among several highly sensitive methods, atomic absorption spectrophotometry (AAS) is employed to analyze GSR in the laboratory. However, it is sometimes necessary to identify bullet holes immediately at a crime scene. The purpose of this examination was to determine whether the use of the field test Bullet Hole Testing Kit 3 (BTK3) on a suspected bullet hole would influence the outcome of AAS‐analysis: Three commonly encountered firearms (Glock17, Tokarev, and Colt) were fired at skin, wood, and cloth. AAS‐analysis was performed with and without previous BTK3 application. The results clearly indicate that there is no significant interaction on the grounds of BTK3 use (BTK3 vs. no‐BTK3 [kit_nokit] [Pb: p = 0.1309; Sb: p = 0.9111], material*kit_nokit [Pb: p = 0.5960; Sb: p = 0.9930], distance*kit_nokit [Pb: p = 0.4014; Sb: p = 0.9184], and firearm type*kit_nokit [Pb: p = 0.9662; Sb: p = 0.9885]); hence, applying this field kit does not falsify later AAS outcomes. 相似文献
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Paula Melani Rocha 《Communicatio》2013,39(2):192-205
ABSTRACTThis article proposes a reflection on the importance of including the concept of educommunication in the training of professionals who work with the media, whether in journalism or other fields, both at undergraduate and graduate levels. It presents initiatives developed at the State University of Ponta Grossa, Paraná, Brazil, by the journalism undergraduate degree and in the specialisation course media, Politics and Social actors, started in 2011. Concepts such as knowledge, mass communication, educommunication and public policy are foregrounded in contemporary networked societies. With that in mind, we propose an analysis of the use of technology in the communication practices of NGOs, social movements, community groups, collective organisations and social networks from the perspective of educommunication. The results show the benefits of aligning the knowledge of communication and education in the training of journalists as well as other professionals who work directly or indirectly with mass communication. 相似文献