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131.
McAvoy Y Bäckström B Janhunen K Stewart A Cole MD 《Forensic science international》1999,99(2):107-122
The application of supercritical fluid chromatography (SFC) in forensic science is reviewed. The applications centre on the analysis of explosives and of drugs of abuse. The systems employed are discussed in the context of comparison with gas chromatography and high-performance liquid chromatography methods which are traditionally used for such analyses. The advantages and disadvantages of SFC over these methods are discussed. Recommendations are made for the developments which are required in SFC technology if it is to find greater application in forensic science. 相似文献
132.
Economic Change and Restructuring - Two recent studies of SME share determination have employed a partial adjustment model which specifies disequilibrium as the sole means of explanation.... 相似文献
133.
The Spatial Patterning of County Homicide Rates: An Application of Exploratory Spatial Data Analysis 总被引:4,自引:0,他引:4
Steven F. Messner Luc Anselin Robert D. Baller Darnell F. Hawkins Glenn Deane Stewart E. Tolnay 《Journal of Quantitative Criminology》1999,15(4):423-450
The possibility that homicides can spread from one geographic area toanother has been entertained for some time by social scientists, yetsystematic efforts to demonstrate the existence, or estimate the strength,of such a diffusion process are just beginning. This paper uses exploratoryspatial data analysis (ESDA) to examine the distribution of homicides in 78counties in, or around, the St. Louis metropolitan area for two timeperiods: a period of relatively stable homicide (1984–1988) and aperiod of generally increasing homicide (1988–1993). The findingsreveal that homicides are distributed nonrandomly, suggestive of positivespatial autocorrelation. Moreover, changes over time in the distribution ofhomicides suggest the possible diffusion of lethal violence out of onecounty containing a medium-sized city (Macon County) into two nearbycounties (Morgan and Sangamon Counties) located to the west. Althoughtraditional correlates of homicide do not account for its nonrandom spatialdistribution across counties, we find some evidence that more affluentareas, or those more rural or agricultural areas, serve as barriers againstthe diffusion of homicides. The patterns of spatial distribution revealedthrough ESDA provide an empirical foundation for the specification ofmultivariate models which can provide formal tests for diffusion processes. 相似文献
134.
Jeryl L. Mumpower Radhika Nath Thomas R. Stewart 《Journal of policy analysis and management》2002,21(1):63-77
The implications of different potential affirmative action policies depend on three factors: selection rate from the applicant pool, base rate of qualified applicants, and accuracy of performance predictions. A series of analyses was conducted under various assumptions concerning affirmative action plans, causes of racial differences in average college admissions test scores, and racial differences in accuracy of performance predictions. Evidence suggesting a lower level of predictive accuracy for African Americans implies that, under a program of affirmative action, both proportionately more false positives (matriculated students who do not succeed) and proportionately more false negatives (rejected applicants who could have succeeded) will be found among African American applicants. Unless equivalent levels of predictive accuracy are achieved for both groups, no admission policy can be fair simultaneously to majority group applicants and African American applicants. © 2002 by the Association for Public Policy Analysis and Management. 相似文献
135.
The boundary that separates the Canadian provinces of New Brunswickand Nova Scotia was established in 1784. This article contraststhe political orientations of those who live within a commonborder region, but on opposite sides of the New Brunswick andNova Scotia boundary, and concludes that the boundary line hasindependently had a divisive impact on the area's politicalculture. Unless this particular provincial boundary is atypical,therefore, the institution of federalism is, in some measure,inherently centrifugal. 相似文献
136.
The effect of interpersonal environment, as measured by the degree of heterogeneity or homogeneity of political party preferences among important others in an individual's social network, was investigated using a national probability sample in Japan and regional sample in New Zealand. In both cultures, the interpersonal environment exerted significant and consistent effects on individual voting preferences. Those who reported inhabiting relatively homogeneous interpersonal political environments (IPEs) displayed a strong tendency to vote for the same political party as the important others in their social network. This effect was robust even after controlling for party identification, attitudes, media exposure, and objectively defined group memberships. Importantly, this tendency was not predicated on the frequency of talk about politics with significant others. Implications are discussed for both micro-level and macro-level theories of social structure and political behavior; an argument is made for the importance of a middle path—the psychology of enduring relationships between people. 相似文献
137.
138.
If eating meat is equated with ‘masculine traits’ of emotional stoicism, strength and virility, do vegan men threaten the concept of a stoic and domineering view of hegemonic masculinity? This research explores how 20 vegan men explain veganism in relation to patriarchal, hegemonic masculinity. We argue that vegan men engage in hybrid masculinity by modifying values associated with veganism and femininity to align with traditional masculine standards. By doing so, vegan men contest the narrow definition of hegemonic masculinity but fall short of challenging gender inequalities. 相似文献
139.
Clayton Wukich Michael D. Siciliano Jason Enia Brandon Boylan 《International Public Management Journal》2017,20(3):381-408
Transnational knowledge networks provide organizations with information useful in addressing shared problems. Social media may enable the formation of those networks, yet their role in the process has received little attention. This article examines the structure and antecedents of two networks facilitated by the microblogging platform Twitter operating in the policy domain of emergency management. One network includes national-level government agencies responsible for disaster response and recovery operations; the other includes nongovernmental organizations in the form of Red Cross and Red Crescent national societies. We use a logistic regression quadratic assignment procedure to test hypotheses derived from related literature. While findings indicate that shared language and geographic proximity shaped network formation, both networks exhibit boundary spanning behavior in which organizations sought out information from high-profile, resource-rich organizations. Those organizations helped to connect otherwise regionally bound clusters and demonstrate the nascent potential of social media to create global transnational knowledge networks. 相似文献
140.
Dull Brandon D. Hoyt Lindsay Till Grzanka Patrick R. Zeiders Katharine H. 《Journal of youth and adolescence》2021,50(6):1081-1097
Journal of Youth and Adolescence - Limited research has investigated factors that shape White youth’s civic action aimed at social change. Investigating the relation between Whiteness and... 相似文献