In search for rules that secure gains from cooperation: the heuristic value of social dilemmas for normative institutional economics

We ask how normative statements are possible within an economic theory framework that recognises the importance of institutional arrangements. Instead of applying established outcome-oriented criteria of social welfare, we examine whether the rules of economic interaction allow the acquisition of gains from cooperation. We suggest to reconstruct any interaction as an existing or repealed social dilemma. This approach helps to identify common rule interests which create room for improvement of all parties involved, and to suggest desirable institutional reforms. Our policy applications include the unemployment problem and rural credit markets.      

国家和社会共同在场:公共卫生事件下社会动员机制研究

社会动员是一种通过利益机制或政策引导调动人们的参与积极性,从而调动社会资源和整合社会力量,进而实现特定目标的工作方法[1].在2003年抗击非典型肺炎疫情中,我国的社会动员发挥了强大力量,但是以行政命令为主要推动力发挥优势的同时,也导致了一定程度的社会秩序混乱以及管理机制失调.随着社会全方位的变化发展,2019年底至今...     

An experimental model of regulating the sharing economy in China: The case of online car hailing

Online car hailing represents a disruptive innovation model in the sharing economy and requires a new regulatory response. China's attempts to regulate this emerging industry can be considered highly experimental model. To relieve the pressure from offline competitors and to clarify the ambiguous legal status of online car hailing, China currently enforces a strict regulatory scheme through what can be described as a central-local dual system. Questions, however, have arisen regarding the legality, proportionality and effectiveness of this approach. Moreover, the current system's choice for a segmented market strategy heavily impairs the sustainable development of the sharing economy. Therefore, the adoption of Internet-based regulations for online car hailing might create better prospects to establish a fairly competitive market as well as to further boost the ever dynamic Internet sharing economy in China.     

Crime,time, and punishment: An exploration of selection bias in sentencing research

The sentencing decision reflects the culmination of a long series of processing and, thus, selection decisions, with cases leaving the system at each decision point. Accordingly, the substantive implications of bias due to sample selection are of particular concern for sentencing research. In an effort to assess the existence and manifestations of selection bias, the sentencing decision is modeled for three samples, each of which was selected from different stages of the justice process. Event-history data on felony arrests in the State of California over a 3-year period are used, along with a relatively simple analytic technique which reduces such bias. Results indicate that biasis introduced when censored observations are excluded from the analyses. Also, the effects of certain exogenous variables on sentence length differ, depending upon the selection criteria. Of these, the influence of pleading guilty rather than going to trial is especially interesting. Overall, our findings are consistent with the possibility that selectivity bias has concealed effects of sentence bargaining in some earlier studies.The data utilized in this study were collected and made available by the State of California Department of Justice, Bureau of Criminal Statistics. The Department of Justice bears no responsibility for the analyses or interpretations presented here.     

大鼠实验性脑梗死早期CT值和GFAP表达变化的研究

目的探讨大鼠24h内实验性脑梗死CT值及脑内胶质纤维酸性蛋白(GFAP)的表达变化,以间接推测脑梗死的发生时间。方法参照Longa线栓法建立大鼠大脑中动脉栓塞脑梗死模型,在不同时相点进行头颅CT扫描,测量右侧脑梗死和左侧未梗死区脑组织的CT值并求出两侧的差值。同时用免疫组化检测脑内GFAP的表达变化。结果6h组大鼠CT平扫均有明确的脑梗死灶,梗死与非梗死两侧脑组织CT值的差值与梗死时间呈直线正相关,GFAP表达与梗死时间也有一定的相关性。结论血管栓塞引起的脑梗死最早于梗死发生后6h可以诊断,并可通过脑梗死与非梗死两侧CT值的差值计算及GFAP表达变化来推测脑梗死发生的时间。     

Correlates of formal and informal social/crime control in China: An exploratory study

There are two major ways for a society to control its members, formal and informal. A major goal of both forms of control is to curb criminal behavior. Formal criminal justice control uses the law and official government agencies (e.g., police, courts, and corrections) to ensure compliance. Informal criminal justice control uses morals and social institutions (e.g., family, peers, and neighbors). China has a long history of using informal criminal justice controls. Nevertheless, there has been a movement during the past several decades towards use of formal criminal justice controls. This study examined the level of agreement with both forms of control and the correlates of each form using a survey of Chinese college students. Findings from multivariate analysis indicated that those who held a Confucian belief in law and punishment, those who had a higher distrust of strangers, and those who grew up in rural areas were more supportive of informal control, while those who were majoring in the area of law and male respondents were more supportive of formal control.     

尸体腐败程度与死亡经过时间的实验研究

为了找出推测死亡经过时间的客观依据,应用健康的苏白猪为实验模型,进行尸体腐败程度与死亡经过时间研究,将模型分别放置在室内、室外及地下三个环境中,让尸体在自然的环境中发生腐败,详细记录尸体腐败所表现的现象,特别是腐败气体所产生的张力。实验发现,尸体腐败至软组织与骨骼全部分离、以及腐败残留物质的完全消失,与温度、湿度、降雨量、尸体与地面倾斜度、昆虫的寄生等有明显的关系。所得数据,为死亡经过时间的推测,积累了重要的参考依据。     

The power few: experimental criminology and the reduction of harm

The promise of experimental criminology is finding ways to reduce harm from crime and injustice. The problem of experimental criminology is that so few experiments produce evidence of big effects from the interventions they test. One solution to this problem may be concentrating scarce resources for experiments on the “power few:” the small percentage of places, victims, offenders, police officers or other units in any distribution of crime or injustice which produces the greatest amount of harm. By increasing the homogeneity and base rates of the samples enrolled in each experiment, the power few hypothesis predicts increased statistical power to detect program effects. With greater investment of resources, and possibly less variant responses to greater dosages of intervention—especially interventions of support, as distinct from punishment—we may also increase our chances of finding politically acceptable interventions that will work.

An experimental study of a therapeutic boot camp: Impact on impulses, attitudes and recidivism

Two hundred thirty four adult male inmates entering prison were randomly assigned to an early release program in either a correctional boot camp or a large, traditional prison in the Maryland state correctional system. Boot camp releasees had marginally lower recidivism compared to those released from the traditional prison. A pre-test, post-test self report survey indicated the boot camp program had little impact on criminogenic characteristics except for a lowering of self control. In contrast, inmates in prison became more antisocial, lower in self control, worse in anger management, and reported more criminal tendencies by the end of their time in prison. Criminogenic attitudes and impulses were significantly associated with recidivism. The impact of the boot camp diminished to non-significance when antisocial attitudes or anger management problems were added to the models predicting recidivism. Implications for jurisdictions considering whether to operate correctional boot camps are discussed.     

An experimental study of compressed work schedules in policing: advantages and disadvantages of various shift lengths

Objectives  

The objectives of this research were to test the impacts of three shift lengths (8-, 10-, and 12-hour) on performance, health, safety, quality of life, sleep, fatigue, alertness, off-duty employment, and overtime among police.     

体位性窒息对心、肺功能影响的实验研究

通过从股静脉将漂浮导管插入肺动脉的方法 ,检测悬挂前、悬挂期间和临终阶段呼吸、肺动脉压、心输出量的变化,探讨体位性窒息对心、肺功能影响及其在死亡中所起作用。结果:(1)悬挂前呼吸频率平稳 ,悬挂期间逐渐加快 ,临终前呈无规律状态 ;(2)悬挂期间及临终时肺动脉压比悬挂前明显升高;(3)悬挂前及悬挂期间的心输出量基本平稳 ,临终时比悬挂前及悬挂期间明显下降。本研究发现 ,悬挂可致呼吸失调 ,机体缺氧 ,导致心、肺功能障碍 ,属肺性死亡。其特征为呼吸停止是原发性的 ,心跳停止是继发的。     

家兔血液和尿液中氯胺酮浓度的相关性

目的研究家兔尿液中氯胺酮及代谢物去甲氯胺酮浓度与血药浓度的动态相关性。方法实验家兔分为氯胺酮灌胃组、静脉注射组和对照组,分别于染毒前和染毒后不同时间点收集尿液和血液。气相色谱/质谱联用(GC/MS)全扫描定性、气相色谱(GC)定量分析血液和尿液样品中氯胺酮及去甲氯胺酮的浓度。采用双变量Pearson相关分析研究尿液中药物浓度和血药浓度的相关性。结果氯胺酮灌胃组和静脉注射组给药后各时间点氯胺酮及去甲氯胺酮在尿液和血液中的浓度相关系数范围在0.11～0.69之间。结论氯胺酮及去甲氯胺酮在尿液和血液中的浓度相关性较差,尿液药物浓度并不能直接反映血药浓度,因此用尿液中氯胺酮浓度推断血药浓度时应慎重考虑。     

尸体甲状腺球蛋白降解及其与死亡时间的关系

目的探讨尸体甲状腺球蛋白降解程度与死亡时间(PM I)的关系。方法死后21d内尸体的甲状腺组织,经免疫组化(EPOS)法染色,观察甲状腺球蛋白的染色反应;对63例阳性染色的甲状腺组织(PM I≤5d)进行计算机图像分析,并对所得图像参数的数据进行统计学分析。结果PM I≤5d的甲状腺组织,甲状腺腺泡上皮细胞胞浆及甲状腺胶质中均显示了不同程度的免疫反应阳性;PM I超过12d,免疫反应阴性;经图像分析及统计学处理,其积分光密度、分布密度和目标面积与PM I之间的确定系数(R2)分别达0.9794,0.9732及0.9884。结论尸体甲状腺组织的甲状腺球蛋白降解程度随PM I不同而变化,二者呈现较强的相关性。     

Questions,propositions and assessing different levels of evidence: Forensic voice comparison in practice

This paper contributes to the ongoing discussion about the distinction between observations and propositions in forensic inference, with a specific focus on forensic voice comparison casework conducted in the UK. We outline both linguistic and legal issues which make the evaluation of voice evidence and the refinement of propositions problematic in practice, and illustrate these using case examples. We will argue that group-level observations from the offender sample will always be evidential and that the value of this evidence must be determined by the expert. As such, a proposal is made that experts should, at least conceptually, think of voice evidence as having two levels, both with evidential value: group-level and individual-level. The two rely on different underlying assumptions, and the group-level observations can be used to inform the individual-level propositions. However, for the sake of interpretability, it is probably preferable to present only one combined conclusion to the end user. We also wish to reiterate points made in previous work: in providing conclusions, the forensic expert must acknowledge that the value of the evidence is dependent on a number of assumptions (propositions and background information) and these assumptions must be made clear and explicit to the user.     

The challenge and imperative of private sector cybersecurity: An international comparison

Attacks on computers and information networks, both public and private, are disclosed in the news daily. Most recently, Apple, Facebook, and Twitter acknowledged that they were attacked and were now taking additional measures to secure their networks. In January of 2013, Kaspersky Labs reported discovering malware that not only targeted government information in Eastern Europe, former Soviet republics, and Central Asia, but also had been actively doing so since 2007. The scope of global cyber attacks is staggering and the solutions to securing property and protecting national security are illusive, in large part because infrastructure is owned and operated by private, rather than public, entities. Nations struggle with choosing the most effective strategy and potential regulation of the private sector in order to reduce overall cybersecurity risk. This paper reviews the nature of cyber threats, and compares the United States and European approach to promoting cybersecurity in the private sector. Furthermore, the paper discusses how different approaches can affect cybersecurity risk, and suggests a framework for visualizing the impact of law and strategy on security.     

大鼠急性脑干损伤神经细胞凋亡和轴突的变化

目的研究急性脑干损伤早期的病理变化,探讨其在急性脑干损伤中的法医学意义。方法采用自由落体造成大鼠急性脑干损伤模型,HE染色常规观察各部位脑组织的显微形态改变之后,用TUNEL末端标记检测神经细胞凋亡,用LSAB染色显示神经丝蛋白(NF)。结果实验动物模型能够较好的模拟法医案例;脑干损伤的大鼠脑组织淤血、水肿、环状出血,脑皮质内神经凋亡细胞数目明显增多(P<0.01);脑干部位神经轴突排列紊乱、肿胀、断裂。结论上述多种病理变化对急性脑干损伤的死后诊断具有一定的意义。     

Developmental trajectories of nonsocial reinforcement and offending in adolescence and young adulthood: An exploratory study of an understudied part of social learning theory

Purpose

Within social learning theory, nonsocial reinforcement has been hypothesized to have a link with offending. The purpose of the present study was to address two questions: (1) Does nonsocial reinforcement change or remain stable over time? And (2) does nonsocial reinforcement have a reciprocal link with offending, as Wood et al. (1997) would expect?

Methods

We used a subsample (N = 413) of the National Longitudinal Survey of Youth (NLSY) data and semi-parametric group-based modeling (SPGM).

Results and Conclusions

The SPGM suggested three distinct groups of nonsocial reinforcement (one trajectory group appeared to have a low but stable rate of nonsocial reinforcement, one trajectory appeared to be higher but stable, another trajectory higher but also stable). A cross-tabulation of the nonsocial reinforcement trajectories and offending trajectories indicated that offending increased as nonsocial reinforcement became greater. Study limitations and implications are also discussed.     

MAP-2在大鼠脑损伤后表达变化的时间规律性研究

目的探讨MAP-2在大鼠脑损伤后表达变化的时间规律性。方法以355.09kPa冲击应力致大鼠局灶性脑损伤后,在不同时间应用原位杂交、免疫组化、免疫组化双染色技术检测MAP-2 mRNA和蛋白表达情况。结果 MAP-2mRNA在对照组及假手术组均有表达,伤后30 min表达增强,伤后2d,达到峰值,并维持高水平表达至伤后7d。MAP-2蛋白在对照组及假手术组均有表达,伤后3h开始呈下降趋势,伤后1d,达到最低值,伤后2d起,表达逐渐恢复,伤后15d,恢复至对照组水平。结论脑损伤后MAP-2 mRNA及蛋白表达具有时间规律,可用于法医学推断脑损伤形成时间。     

大鼠脊髓挫伤后BDNF表达的实验性研究

目的探讨大鼠脊髓挫伤后脑源性神经营养因子(BDNF)在脊髓内的表达变化规律。方法建立大鼠脊髓挫伤模型,以正常脊髓组织为对照,采用RT-PCR和免疫组化SABC法对伤后即刻、1h、3h、6h、12h、1d、3d、5d、7d大鼠脊髓组织中的BDNF和BDNF mRNA进行检测,并对所得数据进行统计学分析。结果正常大鼠脊髓组织细胞内有低水平的BDNF mRNA表达和少量BDNF阳性染色细胞,BDNF mRNA和BDNF的积分光密度(IOD)值分别为45.83±3.545、20286.225±2094.955,BDNF阳性细胞数为16.50±3.391;伤后6~12h,BDNF mRNA和BDNF呈升高趋势,5d达高峰,二者的IOD值及阳性细胞数分别为795.83±112.55、54272.143±2704.239和158.17±12.287。伤后7d,BDNF mRNA和BDNF的IOD值及阳性细胞数分别为655.17±80.871、42249.928±809.391和100.17±5.529。各组之间比较,其差异具有统计学意义(P<0.05)。BDNF免疫阳性细胞在损伤早期主要是脊髓神经元和少量星形胶质细胞,后期则以小胶质细胞为主。结论大鼠脊髓挫伤后,脊髓组织细胞中的BDNF及其mRNA增多,并随伤后时间呈现一定规律性变化。     

Are Shelter Workers Burned Out?: An Examination of Stress,Social Support,and Coping

Job stress, perceived social support, coping self-efficacy, and coping strategies were studied as predictors of emotional exhaustion and reduced personal accomplishment among a sample of 123 female shelter workers. Overall, these workers did not meet the collective criteria for burnout as defined by Maslach and Jackson (1986) and perceived social support and coping strategies did not account for unique variance in the prediction of emotional exhaustion and reduced personal accomplishment. Rather, high levels of time pressure and low levels of self-efficacy for being productive at work were identified as predictors of emotional exhaustion. Personal accomplishment was predicted by time pressure and robust levels of self-efficacy for dealing with stressors at work. An earlier version of this paper was presented at the 109th annual convention of the American Psychological Association. This paper is based on the Masters thesis of Lisa M. Baker and the undergraduate honors thesis of Nazish Salahuddin, both completed under the direction of Karen M. O’Brien. Gratitude is extended to Christel Nichols and to the crisis workers who participated in this study.