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A novel ring-substituted methamphetamine regioisomer, N,alpha,4-trimethyl phenmethylamine, was synthesized in order to study the validity of proposed structures for various mass spectrometry (MS)-derived peaks in a methamphetamine fragmentation pattern. While other research efforts have studied aspects of methamphetamine in detail, a full fragmentation study has not been reported previously. In addition to showing molecular structures represented by fragment peaks, mechanisms for selected processes are detailed. An empirically derived procedure to easily determine by simple spectral peak pattern recognition the geometry of dimethyl- or ethyl-substituted immonium ions (RRC = N+ RR) where m/z = 58 is outlined. These results are platform independent for electron ionization (EI) instruments, but have also proven to be helpful in explaining spectral peaks observed in spectra from ion trap systems. The spectrum for the synthesized methamphetamine regioisomer was accurately predicted using this methodology. While this approach is useful in some casework, the converse may be more useful: when an unexpected or unusual peak pattern arises in a spectrum, being able to analyze it to determine the structure of the molecule. This paper gives an analyst the means to begin such retro-synthetic analyses. 相似文献
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Purpose
The study synthesizes the literature on turnover intentions to assess what domains (e.g., personal characteristics, work environment, and job attitudes) account for the strongest association with turnover intent, what are the characteristics of these relationships, and how do these relationships differ by criminal justice practitioner type.Methods
The current study utilizes a systematic review to obtain studies for conducting a meta-analysis. The researchers utilized the r family/correlation coefficient. Studies were weighted by sample size, correlations converted to Fisher’s z, analyses performed, and results converted back to r for interpretation.Results
In terms of the individual predictors for law enforcement, the five strongest variables included alternative job search behavior, job satisfaction, psychological distress, emotional exhaustion, procedural and distributive justice. The five strongest predictors of turnover intent for institutional corrections were normative commitment, emotional exhaustion, depersonalization, affective commitment, and job satisfaction. The five strongest predictors for community corrections included experience, alternative job search behavior, perceptions of coworkers, growth need strength, and job satisfaction.Conclusions
The results of the meta-analysis confirmed the domain of personal characteristics, overall, has the weakest association with turnover intent whereas work environment and job attitude domains consistently display moderate-to-large effects for both law enforcement and corrections. 相似文献23.
Jongseok Woo 《Contemporary Politics》2010,16(4):369-382
This article explores how a military's organizational character (cohesion or lack thereof) shapes military officers' attitudes toward new civilian leadership in democratizing South Korea and the Philippines. It suggests that a factionalized military makes civilian control much more difficult and the route to democratic consolidation highly unstable and incomplete for three reasons. First, in the factionalized army, individual officers' allegiance is directed toward their factional leaders, not toward the military as a unified body and the civilian leadership. Second, factionalized military will create ‘monitoring’ and ‘sanctioning’ problems for civilians. Finally, competition among various factions in the military promotes officers' appetite for political domination. The structured-focused analysis of democratization in South Korea and the Philippines clearly sustains the theoretical arguments. The study implies that the institutionalization of civilian control of the military in democratizing nations depends on new leaders' ability/willingness to remove military factions and rebuild the armed forces into a cohesive organ. 相似文献
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Dinitto DM Bridget Busch-Armendariz N Bender K Hyeyoung Woo Tackett-Gibson M Dyer J 《Journal of interpersonal violence》2008,23(10):1483-1493
Three pilot studies were conducted to obtain information about sexual assault perpetration from adult men in the United States. Each used the same random digit-dial sampling and recruitment strategy. One pilot was administered by telephone and two via the Web. Response rates in all pilots were low. Although results cannot be generalized beyond the sample, of the 97 men who completed the surveys, approximately 40% in each pilot reported some sexual assault behavior, broadly defined. Contrary to expectations, telephone respondents reported a wider range of sexual assault behaviors. Suggestions for improving response rates include offering a choice of participation methods. 相似文献
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Journal of Indian Philosophy - In the later Indian Yogācāra school, yogipratyak?a, the cognition of yogins is a key concept used to explain the Buddhist goal of enlightenment. It... 相似文献
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Woo Kuan Heong 《国际公共行政管理杂志》2018,41(8):604-618
The functions of the public sector penetrate almost all aspects of social life. Considering the tremendous implications that government employment holds for economic health and other aspects, it is understandable that the processes controlling entry to these jobs are subject to widespread concern. Democratic norms call for a representative bureaucracy. The large size and increasingly mono-ethnic of the Malaysian civil service have caused concern for some time. This study suggests that job characteristics, some background and personal characteristics are significant determinants of graduating students’ job choice. The study also demonstrates how representative bureaucracy would affect performance of the public sector. 相似文献
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Resilience and robustness are exciting concepts for policy researchers. Their broad use in other disciplines has motivated social scientists and policy researchers to adopt them in analyses. In the present paper, we review definitions of these concepts and the primary theoretical and empirical challenges presented by resilience and robustness as lenses for improving the understanding of policy process and policy design. The results reveal that the two concepts differ in their potential value for public policy analysis. Despite its diffusion and ‘charme’, resilience does not appear to be useful and may be misleading, whereas robustness exhibits great potential with respect to both analysis and design. 相似文献
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Lee Woo Jung Hackman Daniel A. Guttmannova Katarina Kosterman Rick Lee Jungeun Olivia 《Journal of youth and adolescence》2022,51(9):1733-1744
Journal of Youth and Adolescence - Neighborhood disadvantage is a developmental context that may contribute to Asian American adolescent internalizing problems, yet there is a dearth of... 相似文献
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