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231.
The rapid economic growth in China over recent decades has been accompanied by higher levels of crime, but there have been
few studies of the Chinese experience of criminal victimization. A recent victimization survey of a representative sample
of households in Tianjin represents a major effort to fill this gap in the literature. The present paper reviews the research
based on the Tianjin survey along with other studies of crime and criminal victimization in China that have been published
since 1990. We summarize the major findings, discuss the theoretical perspectives and methodological strategies that have
been applied, identify the limitations of the research to date, and offer suggestions for future research.
相似文献
Yue Zhuo (Corresponding author)Email: |
Steven F. MessnerEmail: |
Lening ZhangEmail: |
232.
Identification particles used for the purpose of the post-blast identification of explosives have a coding system based on the combination of metal oxides and their various concentrations. These materials are composed of the polymeric matrix, iron powder (ferromagnetic properties), UV light active dyestuff and various metal oxides in a various ratios. A suitable analytical method has to be used for an accurate characterization of these metal components in the particles in order to find the required information, i.e. to determine the place and the year of production and as the case may be, also the production batch of misused explosives. In this work, the method of microwave digestion and flame atomic absorption spectrometry (F-AAS) was developed for an accurate determination of Zn, Mg, Cu and Pb in a few novel types of identification particles and applied to their characterization. When using specific sample treatment (digestion with a mixture of nitric acid with hydrochloric or hydrofluoric acid), the 3 sigma limits of detection (LODs) for the determination of Zn, Mg, Cu and Pb in 5mg original samples were 1.9, 0.2, 1.3 and 2.4 mg g(-1), respectively. The signal suppression due to the presence of HNO3+HCl or HNO3+HF was observed for Zn; therefore, the calibration solutions had to be prepared exactly with the same acids as those used for the sample mineralization. The determination of Mg, Cu and Pb was free of interferences; hence a simple calibration curve method could be adopted for attaining accurate results. The accuracy was checked by comparison of the results with those obtained by means of independent inductively coupled plasma optical emission spectrometry (ICP-OES). Good precision values, as relative standard deviation, in the range of 1-5% were obtained. A total number of 71 samples was analysed and classified by multivariate methods to prove the suitability of the procedure proposed for the purpose of the identification of explosives. 相似文献
233.
Law and Philosophy - 相似文献
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Public Choice - To ameliorate ideological or partisan cleavages in councils and legislatures, we propose modifications of approval voting in order to elect multiple winners, who may be either... 相似文献
237.
Steven Towler BS Marta Concheiro PhD Sue Pearring MS Luke N. Rodda PhD 《Journal of forensic sciences》2021,66(1):375-382
Performing point‐of‐care urine drug screen testing at autopsy by a forensic pathologist may provide an early indication of the presence of analytes of interest during autopsy. An evaluation for the screening of 14 classes of common drugs of abuse in postmortem urine by the point‐of‐care screening device, Alere iCup DX 14, is presented. One hundred ninety postmortem urine samples were screened with the iCup occurring at autopsy by the forensic pathologist. Positive and negative results obtained from the screening kit were evaluated against confirmatory test results obtained using routine forensic toxicology analyses that employed LC‐MS/MS and GC‐MS to detect a combination of over 85 common drugs of abuse and medications. Sensitivity for each respective iCup drug class ranged from 66% (buprenorphine) to 100% (methadone, tricyclic antidepressants). Specificity for each respective iCup drug class ranged from 89% (benzodiazepines) to 100% (amphetamines, barbiturates, buprenorphine, 3,4‐methylenedioxymethamphetamine, methadone). Positive predictive values ranged from 44% (benzodiazepines) to 100% (amphetamines, barbiturates, buprenorphine, methylenedioxymethamphetamine, methadone), while negative predictive values ranged from 96% (methamphetamine) to 100% (barbiturates, methadone, tricyclic antidepressants). A high false‐positive rate was yielded by the benzodiazepine class. The lack of fentanyl screening in the point‐of‐care device is a significant limitation considering its prolific prevalence in forensic casework. The results obtained in the study should be acknowledged when considering the use of the Alere iCup DX 14 in the context of postmortem casework to help indicate potential drug use contemporaneously with autopsy and when requiring such preliminary results prior to the release of a final forensic toxicology report. 相似文献
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Journal of Chinese Political Science - 相似文献
240.
Steven R. Henderson 《Local Government Studies》2020,46(1):116-138
ABSTRACTThe ‘suburban age’ has been conceptualised as the dominant global urban spatial reality for the 21st Century, yet the politics associated with this heightened expansiveness remain underdeveloped. Of relevance is the potential for suburban discontentment across a myriad of spaces centred upon the under provision of infrastructure and employment. With urban regions often highly fragmented by local government boundaries, bottom-up inter-local government responses assume significance, including sub-regional advocacy given enduring hierarchical government dependencies. In consideration of the evolving strength of sub-regional advocacy, three institutionalist themes are introduced: credibility, coherency and coordination. Empirical insights are presented from chief executive officer (CEO)-based interviews conducted across expansive Melbourne, Australia. In Melbourne, a ‘weak mayor/strong CEO’ local government system predominates beneath a state government with extensive metropolitan responsibilities. Melbourne’s sub-metropolitan regional structures have recently looked to strengthen their external presence through actions illustrative of the identified themes, with local government CEOs playing a key role in directing their evolving character. The global ‘suburban age’ must be associated with heightened sub-regional competition across enlarged urban regions, the management of which will present a growing spatial challenge for political leaders. 相似文献