Model uncertainty and the effect of shall-issue right-to-carry laws on crime

In this paper, we explore the role of model uncertainty in explaining the different findings in the literature regarding the effect of shall-issue right-to-carry concealed weapons laws on crime. In particular, we systematically examine how different modeling assumptions affect the results. We find little support for some widely used assumptions in the literature (e.g., population weights), but find that allowing for the effect of the law to be heterogeneous across both counties and over time is important for explaining the observed patterns of crime. In terms of model uncertainty, we find that there is substantial variation in the estimated effects for each model across all dimensions of the model space. This suggests that one should be cautious in using the results from any particular model to inform policy decisions.     

Assessing time-varying stock market integration in Economic and Monetary Union for normal and crisis periods

In this paper, we examine the stock market integration process amongst 17 Economic and Monetary Union (EMU) countries from January 2002 to June 2013 over a normal period as well as for the Global Financial Crisis (GFC) and Eurozone Debt Crisis (EDC) periods. We classify the economies in three groups (A, B and C) based on their GDP to examine whether the economic size influences financial integration. Seven indicators are used for the purpose, namely, beta convergence, sigma convergence, variance ratio, asymmetric DCC, dynamic cointegration, market synchronisation measure and common components approach. The results suggest that large-sized EMU economies (termed as Group A) exhibit strong stock market integration. Moderate integration is observed for middle-sized EMU economies with old membership (termed as Group B). Small-sized economies (termed as Group C) economies seemed to be least integrated within the EMU stock market system. The findings further suggest presence of contagion effects as one moves from normal to crisis periods, which are specifically stronger for more integrated economies of Group A. We recommend institutional, regulatory and other policy reforms for Group B and especially Group C to achieve higher level of integration.     

城市化进程中的社区建设模式探索——以长沙市咸嘉新村为例

城市化进程中的社区建设问题是当前一大热点问题，其模式选择也备受学术界关注。本文在分析国内外社区建设模式优劣的基础上，以长沙市咸嘉新村为实证研究，围绕社区建设主体之间的利益分配和相互作用展开研究，通过构建社区建设的三方“博弈模型”，探索出了“G—D—P联合建设”的新模式，以期为我国城市化进程中的新型社区的建设与完善，旧有社区和城中村的改造提供可行性方案。     

The theory of repurchase decision-making (TRD): Identifying the critical factors in the post-purchase decision-making process

A theory particularly designed to explain re-buying decision formation is lacking. This research developed and tested a theory of repurchase decision-making (TRD) that more comprehensively explains individuals’ post-purchase decision-making processes. Two studies were conducted in a full-service restaurant setting for the development of this theory. Specifically, important factors generating the repurchasing intention were identified through an exploratory qualitative approach in Study 1. In this qualitative approach, a new set of belief items and salient referents in a re-buying decision-making process were also identified. The proposed model merging the model of goal-directed behavior (MGB) with identified factors and belief constructs from Study 1 were tested in the second study. Our results demonstrated that incremental amounts of total variance in the re-buying decision were explained by the TRD. Newly integrated constructs in combination with the original variables in the MGB were found to play a critical role in the re-buying decision-making process. The implications of this study are presented and discussed.     

Criteria for the Stochastic Ordering of Random Sums,with Actuarial Applications

It is shown that vectors ( S M 1 , … , S Mn ) and ( S' M'1 , …, S' M'n ) of random sums of positive random variables are stochastically ordered by upper orthant dependence, lower orthant dependence, concordance or by the supermodular ordering whenever their corresponding random numbers of terms ( M 1 , … , M n ) and ( M' 1 , … , M' n ) are themselves ordered in this fashion. Actuarial applications of these results are given to different dependence structures for the collective risk model with several classes of business.     

全球化背景下中国经济发展上位模式

20世纪70年代后,在新的经济全球化的浪潮中,中国为了适应国际经济发展新趋势,进行了大刀阔斧的改革。中国依据本国国情和所处的历史发展阶段,坚持以马克思主义和邓小平理论为指导,探索出了自己独特的经济发展模式,建立了具有中国特色的社会主义国家,使得我国的经济、政治、文化、体育等各领域都有长足的发展,人民的社会福利有了根本性的保障。同时,在此次金融危机中,中国利用各种宏观调控政策率先走出了危机的低谷,这些都凸显出中国经济模式的优越性。     

World Leisure and Recreation Association International Position Statement on Leisure Education and Youth at Risk

Researchers have noted the utility of the Investment Model in explaining the formation of loyalty. This study extends the Investment Model in a leisure service context by including two additional constructs of quality and value. Quality and value are proposed as antecedents of satisfaction, with their effects on loyalty mediated by satisfaction. Results from an online panel survey of American cruise passengers support these hypotheses. The study provides a model of loyalty building that may shed new insight on loyalty research.     

适合高职院校的单片机实践教学模式探析

本文分析了当前高职类院校单片机实践教学的主要模式,提出了适合高职院校的＂五步式＂单片机实践教学模式,并对其进行了详细的分析。     

铁路编组站布局的双层规划方法研究

运用双层规划对编组站布局问题进行描述,上层规划表示决策者为了达到车流组织最优而采取的最优投资策略,下层规划为给定编组站布局方案条件下的车流组织优化。通过对上层和下层问题分别剖析,构建了编组站布局的双层规划模型,考虑到模型的复杂性,提出应用遗传算法求解,并给出了求解策略。研究结果表明,双层规划方法适用于实际编组站布局问题决策。