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51.
Hair samples were contaminated by rubbing with cocaine (COC) followed by sweat application, multiple shampoo treatments and storage. The samples were then washed with isopropanol for 15 min, followed by sequential aqueous washes totaling 3.5 h. The amount of drug in the last wash was used to calculate a wash criterion to determine whether samples were positive due to use or contamination. Analyses of cocaine and metabolites were done by LC/MS/MS. These procedures were applied to samples produced by a U.S. government-sponsored cooperative study, in which this laboratory participated, and to samples in a parallel in-house study. All contaminated samples in both studies were correctly identified as contaminated by cutoff, benzoylecgonine (BE) presence, BE ratio, and/or the wash criterion. A method for determining hair porosity was applied to samples in both studies, and porosity characteristics of hair are discussed as they relate to experimental and real-world contamination of hair, preparation of proficiency survey samples, and analysis of unknown hair samples. 相似文献
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Violence, attempted escapes, thefts, persistent rule violations, and other extreme forms of maladaptive prison behavior have
created problems for correctional authorities since congregate confinement became the watchword in American corrections. The
evolution of prisoner classification programs has aided prison administrators in their attempts to recognize potential behavioral
problems but the subjective nature of a number of state classification models has resulted in a continuous wave of litigation
and fiscal constraints. The objective of this paper is to provide a prediction model to assist in the classification of adult
prisoners. Data on all members of the Georgia adult, male prison population from 1971 to 1978 were used as a baseline. A sample
was chosen from inmates in long-term disciplinary segregation whose files contained all necessary demographic, psychometric
and judicial variables. A discriminant analysis of these two groups identified 14 variables which correctly assigned inmates
in 85% of the cases. The predictive variables include both demographic and personality characteristics. 相似文献
54.
Charles L. Davis Matthew J. Gabel Kenneth M. Coleman 《Studies in Comparative International Development (SCID)》1998,33(2):88-109
This study examines public opinion in Costa Rica and El Salvador regarding regional integration in Central America. Recent
efforts at regional integration as well as the response of the governments of the above countries to those efforts are reviewed.
Public opinion toward regional integration is significantly more positive but less structured in El Salvador than in Costa
Rica. Differences in the international and domestic contexts help to explain the differential responses in these two countries.
Likewise, contextual factors help to account for differences between Central American and European publics in attitudes toward
regional integration.
Charles L. Davis is associate professor of political science at the University of Kentucky. His interests are Latin American
politics and comparative political behavior. Matthew J. Gabel is assistant professor of political science at the University
of Kentucky. His interests are European politics and the politics of regional integration. Kenneth M. Coleman is a former
professor at the University of Kentucky, the University of North Carolina-Chapel Hill, and the University of New Mexico. His
interests are Latin American politics and public opinion. 相似文献
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Davis B. Bobrow 《国际研究展望》2001,2(1):1-12
This essay was stimulated (provoked) by discussions in three separate venues: (1) a U.S. Naval War College conference on "Alternative Futures in War and Conflict: Implications for U.S. National Security," held in late 1999; (2) several recent widely circulated "blue-ribbon" reports on the subject; and (3) recent papers emerging from the U.S. defense bureaucracy speculating on strategic visions of the next ten to twenty years. My contention is that the prevailing official and quasi-official debate exhibits excessive and overly definitive emphases on: (1) particular facets of insecurity; (2) attributions to the U.S. of benign intent and capacity; and (3) assumptions that most others share that interpretation of our words and deeds. There also tends to be unwarranted neglect of representation and standing issues which discriminate for and against different policy perspectives and forms of program expertise. A plea is offered for an alternative approach based on what we know about how persons, organizations, and communities can best position themselves for (in)security futures. 相似文献
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Virginia A. Walter 《国际公共行政管理杂志》2013,36(9):1815-1816
Jeffrey L. Brudney. Fostering Public Programs Tn The Public Sector: Pianning, Initiating, And Managing Voimary Activities. Jossey-Bass Publishers, San Francisco, 1990. 243 pp., $25.95. 相似文献