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121.
Pierre Duez M.A.Sc. Todd Weller M.S. Marcus Brubaker Ph.D. Richard E. Hockensmith B.S. II Ryan Lilien M.D. Ph.D. 《Journal of forensic sciences》2018,63(4):1069-1084
The transition from 2D imaging to 3D scanning in the discipline of firearms and toolmark analysis is likely to provide examiners an unprecedented view of microscopic surface topography. The digital examination of measured 3D surface topographies has been referred to as virtual microscopy (VM). The approach offers several potential advantages over traditional comparison microscopy. Like any new analytic method, VM must be validated prior to its use in a crime laboratory. This paper describes one of the first validation studies of virtual microscopy. Fifty‐six participants at fifteen laboratories used virtual microscopic tools to complete two proficiency‐style tests for cartridge case identification. All participating trained examiners correctly reported 100% of the identifications (known matches) while reporting no false positives. The VM tools also allowed examiners to annotate compared surfaces. These annotations provide insight into the types of marked utilized in comparative analysis. Overall, the results of the study demonstrate that trained examiners can successfully use virtual microscopy to conduct firearms toolmark examination and support the use of the technology in the crime laboratory. 相似文献
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Steven Paul Schinke Robert F. Schilling II Richard P. Barth Lewayne D. Gilchrist Josie Solseng Maxwell 《Journal of family violence》1986,1(1):13-26
Stress and its management influence the nature of family interactions. Harmful family interactions, including violent interactions, are likely affected by mismanaged stress. This paper reviews scientific evidence on stress concepts, sources, and treatment strategies. Particular emphasis is given to the potential of stress-management preventive intervention for reducing the risk of family violence. Based on a study with teenage parents, the authors describe procedures and results from clinical stress-management preventive intervention. Study findings noted post-test and 3- month follow-up improvements in favor of preventive intervention subjects relative to test-only control subjects on measures of personal and social support, cognitive problem solving, self-reinforcement, parenting competence and care, and interpersonal performance. Consumer satisfaction from teenage parents who received intervention lent additional support to the value of stress-management preventive methods. The paper discusses the implications, limitations, and future directions of stress-management preventive intervention to lower risks of family violence. 相似文献
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Frederick W. Turner II 《Police Practice and Research》2019,20(2):122-138
Despite the dramatic rise in use of militarized weapons, equipment, and tactics by police departments across the nation, no study has examined the opinions of those responsible for designing, funding, and implementing police militarization in the United States. Therefore this study collected and analyzed opinion data from 465 key stakeholders from the 114th Congress U.S. House of Representatives, law enforcement executives, and local police officers regarding police militarization. Results suggest that while most practitioners and policymakers favor police militarization, Congress and law enforcement differ in support of critical issues such as oversight of military procurement programs, use of surplus military weapons and vehicles, and overall support for the militarization of policing in the United States. 相似文献
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This essay examines the origins, development and current issues involving U.S. doctoral education in public administration by focusing particularly upon the DPA degree-—the first doctorate offered in the field. The article argues that the growth of the DPA coincided with the rapidly expanding needs for professionals in governmnt and the growth of American higher education in the postwar era. As a result, early DPA education contained a significant “professionalixing component” in its course work and dissertation research. The sharp public reactions against government professionals and professionalism in the late 1970s and 1980s combined with a new scientific research emphasis for doctoral education stressed by NASPAA's Comprehensive Schools Section, October 20, 1981, called into question the older professional assumptions upon which the DPA was created as a degree program. These trends now raise fundamental intellectual issues regarding its future and serve to fragment the once cohesive programmatic orientation of PA doctoral education today. 相似文献