不同所有制部门就业中的性别差异——来自中国农村的证据

文章采用中国家庭营养健康调查(CHNS)1993年和2000年的数据,对影响个人进入不同所有制部门(这里指国有部门、集体部门、传统农业以及私人制及其它部门)的因素进行了深入分析,并对中国农村劳动力在各个部门间就业可能存在的性别差异进行了研究。由于可以将就业部门划分为四个类别,文章采用了多元Logit模型计量回归。为了减少劳动力就业的"自选择"问题,将调查期间成年劳动力中"尚无工作"的一组作为参照项引入。回归采用了两种方法,一种是单独考虑解释变量对劳动力在不同部门就业概率的影响,另一种是添加了性别和其他解释变量的交叉项来验证性别差异对就业的影响。回归结果显示,单独考虑性别因素,不添加交叉项,农村劳动力在不同部门就业的男女差异明显。性别交叉项在决定进入不同所有制部门就业的概率上并没有显著的作用。     

Removing border protection on wheat and rice: effects on rural income and food self‐sufficiency in China*

In this paper, I use the Monash Multi‐Country model – a dynamic Computable General Equilibrium model of China, Australia and the Rest of the World – to analyse the effects of removing border protection on wheat and rice in China. The analysis points to the possibility that removing border protection on wheat and rice may lead to an increase in rural income in China. This is mainly due to the following two factors. First, removing border protection on wheat and rice not only leads to a contraction in agricultural activities, but also leads to an expansion in manufacturing and services activities. Second, on average, rural households in China obtain over half of their income from manufacturing and services activities.     

Sustainable tourism implementation in urban areas: a case study of London

Sustainable tourism is a concept widely embraced by managers and planners of tourist destinations. However, it has received little attention in the context of urban tourism, an area of research that has until recently been largely neglected by academics. This paper contributes to the body of knowledge on sustainable tourism implementation in large cities, by using London as an exploratory case study. Through the collection and analysis of both primary and secondary data (online survey, semi-structured interviews and document analysis), it seeks to explore whether local authorities have implemented policies towards sustainable tourism in the capital. The findings indicate that although the concept of sustainable tourism is perceived as important by policy makers, only a few local authorities in London promote its principles in their policy documents and even fewer have initiatives to put them in practice. Most of these initiatives are isolated activities which address limited aspects of sustainable tourism. The paper concludes that despite some progress made to date, in the current economic climate, growth and development remain the main objectives of governments and local authorities, while social and environmental issues are often left behind.     

The effects of entrepreneurial orientation and marketing information on the performance of SMEs

In this study, we investigate the effects of entrepreneurial orientation and marketing information on the performance of small and medium-sized enterprises. We build and test a causal model using data obtained from Singaporean entrepreneurs and find support for most of our hypotheses. The results indicate that entrepreneurial orientation plays an influential role on the acquisition and utilization of marketing information, and also has a direct effect on firm performance. The utilization of information regarding marketing mix decisions (particularly the Promotion and Place elements) positively affects firm performance, and it partially mediates the relationship between entrepreneurial orientation and firm performance. The implications and future research directions are discussed.     

Making the right friends: A social network perspective on newcomer socialization in teams

Despite the prevalence of work teams in organizations, how newcomers become integrated into teams remains an understudied area. Drawing on research related to indirect social resources, in this paper we employ a social network perspective to examine how close teammates' friendship centrality can facilitate newcomers' adjustment by fostering the newcomers' own social capital in teams and promoting their subsequent task performance. Furthermore, our model incorporates institutionalized socialization tactics and political skill as two contingencies that can further strengthen the positive effects of indirect social resources on newcomers' adjustment. In a time-lagged study using multiple sources of data, we found good support for our hypotheses. Specifically, close teammates' friendship centrality was positively related to newcomers' task performance through the mediating effect of newcomers' own friendship centrality in teams. The two moderators further strengthened this indirect effect. Overall, this study highlights the importance of “making the right friends” to facilitate newcomer adjustment into teams.     

Robust XVA

We introduce an arbitrage‐free framework for robust valuation adjustments. An investor trades a credit default swap portfolio with a risky counterparty, and hedges credit risk by taking a position in defaultable bonds. The investor does not know the exact return rate of her counterparty's bond, but she knows it lies within an uncertainty interval. We derive both upper and lower bounds for the XVA process of the portfolio, and show that these bounds may be recovered as solutions of nonlinear ordinary differential equations. The presence of collateralization and closeout payoffs leads to important differences with respect to classical credit risk valuation. The value of the super‐replicating portfolio cannot be directly obtained by plugging one of the extremes of the uncertainty interval in the valuation equation, but rather depends on the relation between the XVA replicating portfolio and the closeout value throughout the life of the transaction. Our comparative statics analysis indicates that credit contagion has a nonlinear effect on the replication strategies and on the XVA.     

On economic and social policy

The end of busing of primary and secondary school students has been a major setback for integration of public schools in the USA. The purpose of this paper is not to offer an alternative to busing; regrettably, no obvious alternative stands out. Rather, it is to offer some social, legal and economic background to help the reader consider, and perhaps propose, realistic alternatives that would reduce both racial and economic segregation in our schools and society. The paper is divided into three sections. The first offers background information useful for better understanding and evaluating the end of busing and school resegregation. The second section focuses on an important parallel between racial and economic discrimination. The closing section introduces considerations important for anticipating reactions to, and the costs and benefits of, alternatives to busing for reintegrating schools, as well as several recommendations to which those considerations can be applied.     

THE MARKET'S PRICING OF DEBT IPOs

Based on the authors' recent study published in the Journal of Financial Economics , this article summarizes new evidence on the first-day and aftermarket price performance of a firm's first public offer of bonds after its equity IPO. Unlike equity IPOs, such bond IPOs are not underpriced on average. However, bonds that are more equity-like (junk bonds) are underpriced at the initial offer whereas high-grade debt is actually overpriced. This finding supports the view that riskier debt issues have a larger equity component and, as a consequence, a higher degree of information asymmetry.
The authors' study also showed that less prestigious underwriters are associated with more underpriced offers, and that the issuer's stock market listing plays an important role in determining the first-day price performance of bond IPOs. The degree of underpricing is lower for bonds issued by firms whose equity is listed on NYSE/AMEX than for bonds issued by firms listed on Nasdaq. Finally, the aftermarket performance for the full sample and various subsamples is consistent with bond market efficiency in the sense that, once prices adjust after the first day of trading, there are no clearly exploitable opportunities for excess returns.     

Evaluating horizontal mergers in the presence of price promotions

Quantitative Marketing and Economics - In this paper, I investigate the impact of a horizontal merger between firms that use price promotions. I find that after the merger, the merged firms...