论当代中国马克思主义政治经济学的新境界

政治经济学与经济学的主要区别在于是否研究生产关系。马克思主义政治经济学用唯物主义的自然史的方法论述经济关系。当代中国马克思主义政治经济学有如下新境界：准确把握中国社会主要矛盾的变化,准确把握中国经济新常态,创新宏观调控思路和方式等。历史发展没有止境,当代中国马克思主义政治经济学新境界的开拓也没有止境。而要不断开拓当代中国马克思主义政治经济学的新境界,需要有科学的方法论和正确的思考方式,既着眼当前又立足长远,做到“六个坚持”,具有批判精神,尤其是必须深入学习马克思主义政治经济学的基本原理和习近平新时代中国特色社会主义思想。     

The Effect of Temperature and Exposure Time on Stability of Cholesterol and Squalene in Latent Fingermarks Deposited on PVDF Membrane

Cholesterol and squalene are fatty materials of latent fingermarks that can be utilized for dating methodologies and visualization techniques. Previous studies have suggested these compounds undergo degradation in fingermarks as a function of time (days) and light at ambient temperature. However, studies assessing how their composition changes at low and high temperatures over short periods of time (hours) have not been published previously. Here, we performed quantitative analysis of cholesterol and squalene in natural fingermark residue using PVDF membrane, after exposure to a range of temperatures (−20 to 100°C) for 4 and 8 h. We found that levels of both fatty materials remained constant at −20 to 60°C, but both showed significant reduction at 100°C, over short exposure times. These results indicate that cholesterol and squalene are detectable at −20 to 60°C, whereas at 100°C or higher, both are lost due to rapid thermal degradation.     

The Error in “Error Rate”: Why Error Rates Are So Needed,Yet So Elusive

Establishing error rates is crucial for knowing how well one is performing, determining whether improvement is needed, measuring whether interventions are effective, as well as for providing transparency. However, the flurry of activities in establishing error rates for the forensic sciences has largely overlooked some fundamental issues that make error rates a problematic construct and limit the ability to obtain a meaningful error rate. These include knowing the ground truth, establishing appropriate databases, determining what counts as an error, characterizing what is an acceptable error rate, ecological validity, and transparency within the adversarial legal system. Without addressing these practical and theoretical challenges, the very notion of a meaningful error rate is limited.     

Combined Collection and Analysis of Inorganic and Organic Gunshot Residues

Gunshot residue (GSR) analysis and their interpretation provide crucial information on a criminal investigation involving the use of firearms. To date, several approaches have been proposed for the implementation of a combined sampling and analysis of inorganic (IGSR) and organic GSR (OGSR). However, it is not clear at this stage if concurrent analyses of both types of residue might be detrimental to the analysis of IGSR currently applied in forensic laboratories. Thus, this work aims to compare and evaluate three different protocols for the combined collection and analysis of IGSR and OGSR. These methods, respectively, involve the use of a modified stub (with two halves, one for the detection of IGSR and the other for the analysis of OGSR); the sequential recovery of GSR with two stubs mounted with different adhesives (double-sided carbon tape and Tesa® TACK) and the sequential analysis of IGSR and OGSR from a single carbon stub following carbon deposition. The detection of IGSR was carried out using SEM-EDX, while OGSR analysis was performed using ultra-high-performance liquid chromatography–tandem mass spectrometry (UHPLC-MS/MS). Obtained results for experiments performed using Geco Sinoxid^® ammunition indicated that sequential analysis was the most suitable protocol for the combined collection and analysis of both IGSR and OGSR. A higher number of inorganic (characteristic and consistent) particles and higher concentrations of ethylcentralite, N-nitrosodiphenylamine, diphenylamine, and nitroglycerin were recovered with this method.     

Voter perceptions of parties’ left–right positions: The role of party strategies

Left–right semantics help voters simplify the complex political reality as they reduce party views on a variety of issues to a single dimension. Less studied, however, is the question of how voters arrive at parties’ left–right positions and how parties can influence voter perceptions. In this article, I demonstrate that the party can shape the voter’s understanding of the content of its left–right ideology by using three strategies: avoidance, ambivalence, or ambiguity. Specifically, the party may avoid or de-emphasize, embrace a conflicting position, or becloud its position on the controversial issue; by so doing, it induces voters to place less weight on this issue when perceiving the party’s left–right position. The empirical analysis connects voter and party data from 21 European democracies in the period 1996–2014 and finds empirical support for the effectiveness of these strategies. In particular, the study finds robust empirical evidence that strategic avoidance, ambivalence, and ambiguity strongly moderate the association between the party’s perceived ideological brand and its underlying issue content.     

对外依存与中国外交的战略自主

改革开放四十年,中国经济得到长足发展,与此同时也带来了对外依存度偏高的风险,而经济上的对外依存与战略自主之间存在密切的相互影响关系。回顾一些大国的对外战略可以看出,相互依存直接影响对外战略,对外依存度过高会导致战略自主性的下降,从而极大缩减战略选项,甚至在一些关键节点不得不诉诸战略冒险。中国的对外依存与战略自主的关系也经历了复杂的演变过程。新中国成立后,中国一度采取"一边倒"的对外政策,在一定程度上影响了战略自主。改革开放之后,中国经济对外部市场、技术和能源的依存度不断上升,也在一定程度上限制了中国对外战略的全面自主发展。因此,中国的大国战略必须在外向与内顾、国际与国内之间保持适当的平衡,更为合理地协调对外依存与战略自主之间的关系,将全面深度改革开放与全方位外交布局紧密联系在一起。唯其如此,中国未来的大国外交才能行稳致远。     

Intergovernmental Relations in the UK: Time for a Radical Overhaul?

Brexit and the coronavirus pandemic have put relationships between the UK government and its devolved counterparts under growing strain. Tensions generated by both of these developments have exposed the inadequacies of the existing, under-developed system for bringing governments together in the UK. The limitations of the current system include the ad hoc nature of intergovernmental meetings, and their consultative rather than decision-making character. Drawing upon an analysis of how intergovernmental relationships are structured in five other countries, the authors offer a number of suggestions for the reconfiguration of the UK model. They explore different ways of enabling joint decision making by its governments, and argue against the assumption that England can be represented adequately by the UK administration. Without a serious attempt to address this dysfunctional part of the UK’s territorial constitution, there is every prospect that relations between these different governments will continue to deteriorate.     

中日第三方市场合作的挑战与对策

作为一种创新的国际合作模式,中日第三方市场合作未来发展前景广阔,给中日双方带来巨大机遇,但推动第三方市场合作仍面临诸多挑战:两国在参与第三方市场合作项目中存在竞争惯性思维;中日第三方市场合作须应对地缘政治博弈的挑战;日本国内政治对中日第三方市场合作的"负向外溢效应";中日关于第三方市场合作项目的标准与规则的分歧;面临第三方不稳定因素的影响.为此,需要中日两国发挥各自优势,携手寻求在第三方市场的合作机会;明确两国合作的方向和目标,避免域外因素干扰,推动RCEP早日签署生效;增进中日政治互信,使中日政经关系形成相互促进的良性循环;建立长效支持促进机制,推动双方共同制定国际标准;做好第三方市场风险管控预防工作.     

Feeding Mothers’ Love: Stories of Breastfeeding and Mothering in Urban China

ABSTRACT

By analysing narratives of infant feeding, this article explores how emotions are involved in the making of maternal subjectivity. The article is based on interviews with 21 Chinese middle-class mothers of small infants living in Beijing and their stories of how breastfeeding connects to intimacy and love. By merging post-structural approaches of subjectivity with affect theory, the article shows how the emotional dimension of breastfeeding promotes an ideal of mothers as primary caregivers. It finds that this ideal is challenged by practices of multiple caregiving in the mothers’ everyday lives. By exploring the performativity of emotions, the article adds another sociological perspective beyond those concerned with medical discourses of feeding infants. Also, as emotions have been neglected in much social research on Chinese mothering, it contributes to new sociological knowledge about mothering in China.     

劳动关系视角下的网约用工纠纷研究

近年来,网络平台与网约工的劳动纠纷开始显现在司法实务中。面对类似纠纷,法院采取了不同的立场。尽管网约用工打破了过去"单一企业对应单一员工"的劳动关系模式,但根据现行法律,仅凭合作协议难以认定网络平台与网约工存在劳动关系。一方面应当区分网约工与网络平台签订劳动合同、网络平台与其它企业进行合作、网络平台直接与网约工签订合作协议三种形式,另一方面应当在司法实践中对"各项劳动规章制度适用"、"受劳动管理"、"从事用人单位安排的有报酬的劳动"进行统一规范解释。最后应当在司法经验基础上根据"互联网+"背景下共享经济的特点完善劳动法。