制度与契约的关系研究

制度和契约是两个难以分清的概念。长期以来,人们认为制度就是契约,契约就是制度。实际上契约与制度既有着紧密联系,又有着重大区别。法学和制度经济学对于制度和契约关系的理解是分别从不同的侧面进行的,都是不全面的。作者从契约与制度的基本概念入手,通过对二者关系的深入考察,得出制度是契约的核心内容、是契约的外在表现这一结论。     

零售4.0时代先行发货问题的大数据分析

在零售4.0时代,渠道的多样化不仅丰富了数据源,还能迅速生成大量数据,需要通过分析大数据,为决策提取有意义的信息,通过分析先行发货的重要性,提出了一种基于遗传算法（GA）的优化模型,预测顾客何时购买,然后在顾客线下单前将产品运送到距顾客最近的配送中心,解决先行发货中存在的问题。研究认为,需要先部署云计算来存储所有渠道生成的大数据,再应用基于集群的关联规则挖掘研究顾客的购买行为,根据“如果-那么”预测规则预测未来的采购情况,最后利用修正的遗传算法生成最优的先行发货计划;这种遗传算法考虑了其在运输成本和运输距离之外,还有预测规则的置信度,利用大量的数值实验权衡了先行发货中的不同因素,验证了模型的最优可靠性     

国内外交通影响分析比较研究

总结国内外交通影响评价方法。通过对美国交通影响评价的分析,从分析目的、作用、方法、基础理论四方面提出适合我国交通影响分析一般方法的特点,并对交通影响评价在协调城市交通和土地利用关系的定位进行研究：     

Ethnic Enclaves,Networks and Self‐Employment among Middle Eastern Immigrants in Sweden

The proportion of immigrants from countries in the Middle East living in Sweden has increased since the 1970s, and it is a well‐known fact that immigrants from the Middle East suffer from low earnings and high rates of unemployment on the Swedish labour market. There are often great hopes that self‐employment will enable immigrants to improve their labour market situation. Further, in Sweden as in many other countries, the question of whether the existence of ethnic enclaves are good or bad for immigrants’ earnings and employment opportunities has also been widely debated. This paper presents a study of the extent to which Middle Eastern ethnic enclaves and networks in Sweden enhance or hinder immigrants’ self‐employment. The results show that the presence of ethnic enclaves increases the propensity for self‐employment. Thus, immigrants in ethnic enclaves provide their co‐ethnics with goods and services that Swedish natives are not able to provide. The results also show that ethnic networks seem to be an obstacle to immigrant self‐employment. One explanation is that an increase in network size implies increased competition for customers among self‐employed immigrants. The question of whether ethnic enclaves are good or bad for the integration of immigrants into the labour market has been widely debated. The results of this paper provide us with information about the integration puzzle. Ethnic enclaves seem to enhance self‐employment propensities among Middle Eastern immigrants in Sweden.     

Transmission of self-employment across immigrant generations: the importance of ethnic background and gender

This paper studies the intergenerational transmissions of self-employment abilities among immigrants in Sweden. The results show that second-generation immigrants are over-represented in self-employment compared to natives. Male immigrants from countries neighbouring to Sweden and natives alike seem to use both mothers and fathers as role models in their self-employment decision, but the father is the stronger role model among male immigrants from more geographically distant regions. Female immigrants use both their father and their mother as role models in their self-employment decision. Furthermore, male immigrants and male natives tend to become self-employed in the same business sector as their fathers; female immigrants and female natives with self-employed parents are over-represented in self-employment but not necessarily in the same business sector as their parents.     

Sexual orientation and full-time monthly earnings, by public and private sector: evidence from Swedish register data

In this paper we explore annual earnings as well as full-time monthly earnings differentials resulting from sexual orientation. We observe that gay males are at an earnings disadvantage compared to male heterosexuals regardless of which earnings measure we use. This earnings disadvantage is found to be larger when we compare gay and heterosexual males who are working full-time. In addition, the disadvantage is larger in the private than in the public sector. Lesbians, however, earn more than heterosexual females. This earnings advantage is considerably smaller when we study full-time monthly rather than annual earnings but an earnings advantage for lesbians at the top of the earnings distribution is documented regardless of which earnings measure we use. In addition, lesbians are doing better than female heterosexuals in the public sector. To sum up, the results indicate that gay males face obstacles on the labor market that hinder them from reaching top-level positions and high earnings. The earnings advantage observed for lesbians is likely to stem from the fact that lesbians devote more time to market work than heterosexual females do.     

Are economic trends associated with child maltreatment? Preliminary results from the recent recession using state level data

The objective of this study is to investigate the effects of the recent economic recession on child maltreatment rates. Specifically, we examine whether unemployment rates, labor force participation, and food stamp usage are associated with aggregate rates of child abuse and neglect (CAN) rates using state-level data. Theory and prior empirical evidence supports the relationship between family and neighborhood poverty and incidence of child maltreatment; however, the relationship between general economic environment and CAN remains unclear.The study uses a multiple case study design at the state level, analyzing administrative child maltreatment and economic data for seven U.S. states. Aggregate numbers for child maltreatment reports and food stamp usage were obtained from state respective agencies and economic data for unemployment and labor force from the Current Population Survey from the Bureau of Labor Statistics. Empirical growth plots and OLS regression were used to examine changes in maltreatment and utilization of economic variables as predictors over time. Bivariate correlations and OLS regression results show a weak and inconsistent relationship between the economic indicators in this study and maltreatment rates. Several possible reasons accounting for these results are explored.     

The Making of Multiple Personality Disorder: A Social Constructionist View

This article explores the social construction of multiple personality disorder by analyzing professional agreements about the nature of the diagnosis, while locating these within their historical and cultural context. First, a historical review of the disorder traces various overlapping streams of discourse that have shaped the construction of the diagnosis. This is followed by a cross-cultural comparison of MPD and dissociative phenomena in several non-Western societies. The article concludes with some reflections on the cultural meanings of MPD in contemporary America.     

The NGOs and the Grand Illusions of Development and Democracy

The role of civil society in the improvement of equitable development and the stimulation of democratic culture has been notably recognised by international development agencies. In the new policy of ‘good governance’ that proposes progress regarding development and democracy in parallel in the developing countries, civil society is often represented by non-governmental organisations (NGOs). This paper bases its arguments primarily on theories in relation to the role of civil society with regard to development and democracy to raise concerns about current policy trends of ‘good governance’ in the general context of developing countries with the main focus on Africa. The concerns are substantiated by empirical verification through a review of literature. The paper concludes that NGOs are unlikely to have the strength to either promote development or foster democracy.     

基于语步辨认的学术英语教学研究

研究以国内某医学院校一年级医学硕士研究生为研究对象,设计了一项为期16周的教学实验,以探讨语步教学是否有利于促进学术英语教学,是否有利于提高教师专业能力.研究数据显示,实验组和控制组在M1和M2语步差别最大.实验组95％的学生的概要中有M1语步,而控制组只有55％的学生写了M1语步;实验组98％的学生的概要中有M2语步...