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51.
A rapid and efficient procedure is described for the extraction and analysis of oxazepam, the major urinary metabolite of diazepam in greyhounds. Urine was extracted by passing through a bonded silica column (Bond Elut) following enzyme hydrolysis. The adsorbed drug was eluted and then detected and measured by high performance liquid chromatography (HPLC). Recoveries were in excess of 85% at 50 ng/ml concentrations. Detection was possible up to 30 h after a single oral dose of diazepam (5 mg). 相似文献
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This article examines whether the payoff from engaging in innovation‐generating activities is contingent on an organization's level of customer and learning orientation. The authors suggest that innovative activity is associated with higher public service quality when the level of customer and learning orientation within the focal organization is high. They test this hypothesis by drawing on a novel panel data set covering all public nonspecialist hospital organizations in England. Using dynamic panel data estimation techniques, the authors find strong support for a direct relationship between innovative activity and public service quality and for a moderating role of both customer and learning orientation. These findings call for a contingency perspective on public sector innovation and highlight some of the boundary conditions that need to be in place if public service organizations are to benefit fully from their innovative activities. 相似文献
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Presidential candidates regularly use crime issues to help win electoral support. Contrary to conventional wisdom, crime control
became an issue in the 2008 presidential campaign. Despite decreasing crime rates and public opinion focused only temporarily
on illegal immigration, the three major presidential candidates (Obama, Clinton, & McCain) discussed many anticrime initiatives
during the campaign. Unlike past research which has found presidential candidates use primarily symbolic rhetoric in their
anticrime rhetoric, all three presidential candidates in the 2008 presidential election were found to have employed tangible
statements. The article discusses the different findings, making recommendations for future research. 相似文献
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Meghan Prusinowski PhD Pedram Tavadze PhD Zachary Andrews MS Logan Lang BS Divyanjali Pulivendhan BS Cedric Neumann PhD Aldo H. Romero PhD Tatiana Trejos PhD 《Journal of forensic sciences》2024,69(2):498-514
A physical fit is an important observation that can result from the forensic analysis of trace evidence as it conveys a high degree of association between two items. However, physical fit examinations can be time-consuming, and potential bias from analysts may affect judgment. To overcome these shortcomings, a data analysis algorithm using mutual information and a decision tree has been developed to support practitioners in interpreting the evidence. We created these tools using data obtained from physical fit examinations of duct tape and textiles analyzed in previous studies, along with the reasoning behind the analysts' decisions. The relative feature importance is described by material type, enhancing the knowledge base in this field. Compared with the human analysis, the algorithms provided accuracies above 90%, with an improved rate of true positives for most duct tape subsets. Conversely, false positives were observed in high-quality scissor cut (HQ-HT-S) duct tape and textiles. As such, it is advised to use these algorithms in tandem with human analysis. Furthermore, the study evaluated the accuracy of physical fits when only partial sample lengths are available. The results of this investigation indicated that acceptable accuracies for correctly identifying true fits and non-fits occurred when at least 35% of a sample length was present. However, lower accuracies were observed for samples prone to stretching or distortion. Therefore, the models described here can provide a valuable supplementary tool but should not be the sole means of evaluating samples. 相似文献
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Oliver P. Richmond 《Third world quarterly》2020,41(2):207-227
Abstract1Recently there have been calls from policymakers around the world for practically engaged research to produce evidence-based policy for peace, security and development. Policymakers aim to align three types of methodological approaches to knowledge about peace, security and development in international order: methodological liberalism at state and international levels, aligned with ‘methodological everydayism’ in order to constrain methodological nationalism. Policy operates through broad forms of intervention, spanning military, governmental and developmental processes, which scholarship is expected to refine. Critical scholarship is sensitive about the subsequent ‘interventionary order’, often connecting methodological everydayism with global justice frameworks rather than methodological nationalism or liberalism.