管制刀具在治安管理法律文件中存在的问题及建议

管制刀具是公安机关治安管理部门进行严格管制的危险物品种类之一.当前管制刀具治安管理法律文件中存在着法规不完善、管理要求与处罚条文不配套以及认定标准不足等问题.为此,应针对当前管制刀具治安管理中的新问题,及时制定新的管刺刀具管理条例,完善和修订其他相关法规,以有效促进管制刀具治安管理工作.     

Composite Machine Learning Algorithm for Material Sourcing,

This study developed a composite machine learning algorithm for attribution of materials of forensic interest (like ammonium nitrate) to original sources. k-nearest neighbor and random forest models were used for source elimination and classification, respectively, in a two-step, composite algorithm based on particle color, size/shape, and trace element concentration features. Novel approaches for simulation to supplement within-source reference features based on empirically measured multi-lot analyses, an improved hold-one-lot-out method for cross-validation, an assessment of the likelihood of the presence of a reference sample, fusion of the source probabilities from the respective classification models, and the calculation of metrics for assessing ensemble sourcing performance are described. Excellent sourcing predictions were obtained; the sourcing algorithm identified the correct source as the top choice 89% of the time, and the correct source was identified to be an average of 2.7 times more likely than the most likely incorrect source.     

Evaluation of Suspected Counterfeit Pharmaceutical Tablets Declared to Contain Controlled Substances Using Handheld Raman Spectrometers

This study describes the performance of handheld Raman devices for determining whether suspect pharmaceutical tablets declared to contain controlled substances were consistent with authentic (CWA) or not consistent with authentic (NCWA) tablets using a simple, rapid, field-friendly method capable of being used by nonexperts. Twenty-five authentic products and 84 known NCWA tablets were examined using three “parent” devices for a total of 327 analyses. On average, the parent devices yielded a true pass rate of 100%, a true fail rate of 98.4%, a false pass rate of 1.6%, and a false fail rate of 0%. The methods/libraries were then transferred to 13 identical “daughter” devices, which were used to examine 10 suspect finished dosage forms in duplicate (six known NCWA tablets and four authentic tablets) for a total of 260 measurements. On average, the daughter devices had a true pass rate of 100%, a true fail rate of 95.5%, a false pass rate of 4.5%, and a false fail rate of 0.0%. These data demonstrate that the parent–daughter electronic transfer method was successful, which permits the ability to develop methods in the laboratory that can be seamlessly pushed out to field devices. The methods can then be used to (i) prioritize samples for additional testing using other more time-consuming laboratory-based techniques needed to detect and quantify active ingredients and (ii) help support the interdiction of dangerous tablets at ports of entry, thereby preventing them from reaching the supply chain.     

Ebola vaccines,evidentiary charisma and the rise of global health emergency research

Abstract

The 2013–2016 West African Ebola outbreak was both a catastrophic public health disaster and a rare research opportunity. This paper analyses how the tensions between the humanitarian imperatives of disease control and the epistemic conventions of bioscientific inquiry played out in the accelerated development, testing and licensure of Ebola vaccines. Beginning with the epidemiological projections of the disease’s spread, the paper develops the notion of evidentiary charisma to capture the power of experimental designs and data packages to marshal public health salience, recruit moral legitimacy and short-circuit scientific contestation. Attention to the charismatic dimensions of Ebola vaccine R&D helps to unpick the simultaneous appeals to exception and convention in the unfolding of a global health crisis, and to trace the normative and technical contours of the emerging paradigm of emergency research.     

Explaining non‐participation in deliberative mini‐publics

This article investigates citizens’ refusal to take part in participatory and deliberative mechanisms. An increasing number of scholars and political actors support the development of mini‐publics – that is, deliberative forums with randomly selected lay citizens. It is often argued that such innovations are a key ingredient to curing the democratic malaise of contemporary political regimes because they provide an appropriate means to achieve inclusiveness and well considered judgment. Nevertheless, real‐life experience shows that the majority of citizens refuse the invitation when they are recruited. This raises a challenging question for the development of a more inclusive democracy: Why do citizens decline to participate in mini‐publics? This article addresses this issue through a qualitative analysis of the perspectives of those who have declined to participate in three mini‐publics: the G1000, the G100 and the Climate Citizens Parliament. Drawing on in‐depth interviews, six explanatory logics of non‐participation are distinguished: concentration on the private sphere; internal political inefficacy; public meeting avoidance; conflict of schedule; political alienation; and mini‐public's lack of impact on the political system. This shows that the reluctance to take part in mini‐publics is rooted in the way individuals conceive their own roles, abilities and capacities in the public sphere, as well as in the perceived output of such democratic innovations.     

论职务犯罪侦查中的控制下交付手段

在职务犯罪侦查中适用控制下交付既具有法理上的正当性，也具有实践的必要性，此次对刑事诉讼法修改已明确规定检察机关在职务犯罪侦查中可以运用控制下交付。因此，应从控制下交付的适用条件、实施主体、审批程序、法律后果以及国际合作五个方面对职务犯罪侦查中适用控制下交付进行具体的法律规制。     

毒品犯罪侦查中的控制下交付与诱惑侦查

毒品犯罪侦查中的控制下交付和诱惑侦查是两种不同的侦查措施,但长期以来理论界和实务界对二者的关系存在错误的认识,而且缉毒部门也因为各种原因更多地选择采用诱惑侦查来侦破毒品案件。在法治化背景下,具备合法性的控制下交付在惩罚犯罪和程序公正上比诱惑侦查更符合刑事诉讼的价值追求,应成为打击毒品犯罪的主要侦查措施。基于国内实施控制下交付时存在的困难,缉毒技术与装备、缉毒人员素质、缉毒协作需通过必要的举措予以加强。     

Assessing Stability and Change in Criminal Offending: A Comparison of Random Effects, Semiparametric, and Fixed Effects Modeling Strategies

An important theoretical problem for criminologists is an explanation forthe robust positive correlation between prior and future criminaloffending. Nagin and Paternoster (1991) have suggested that the correlationcould be due to time-stable population differences in the underlyingproneness to commit crimes (population heterogeneity) and/or thecriminogenic effect that crime has on social bonds, conventionalattachments, and the like (state dependence). Because of data andmeasurement limitations, the disentangling of population heterogeneityand state dependence requires that researchers control for unmeasuredpersistent heterogeneity. Frequently, random effects probit models havebeen employed, which, while user-friendly, make a strong parametricassumption that the unobserved heterogeneity in the population follows anormal distribution. Although semiparametric alternatives to the randomeffects probit model have recently appeared in the literature to avoid thisproblem, in this paper we return to reconsider the fully parametric model. Viasimulation evidence, we first show that the random effects probit modelproduces biased estimates as the departure of heterogeneity from normalitybecomes more substantial. Using the 1958 Philadelphia cohort data, we thencompare the results from a random effects probit model with a semiparametricprobit model and a fixed effects logit model that makes no assumptions aboutthe distribution of unobserved heterogeneity. We found that with this dataset all three models converged on the same substantive result—evenafter controlling for unobserved persistent heterogeneity, with models thattreat the unobserved heterogeneity very differently, prior conduct had apronounced effect on subsequent offending. These results are inconsistentwith a model that attributes all of the positive correlation between priorand future offending to differences in criminal propensity. Sinceresearchers will often be completely blind with respect to the tenabilityof the normality assumption, we conclude that different estimationstrategies should be brought to bear on the data.