Are student flows a significant channel of R&D spillovers from the north to the south?

In global context, as human capital embodies technology, international student flows may channel R&D spillovers from developed countries to less developed ones. Empirical study on a data set of 76 developing countries during 1998–2005 lends strong support to this hypothesis.     

浅谈白音华三号露天矿非工作帮边坡稳定处理措施

对白音华三号露天煤矿的地质特征、水文条件进行分析总结。根据分析制定非工作帮的边坡处理措施。     

The nature of informal food bazaars: Empirical results for Urban Hanoi,Vietnam

This paper aims to study the interesting phenomenon of informal food markets in urban areas, which have been neglected in the past research. Based on an empirical study of consumer choice between informal and formal markets (markets built-up by street hawkers vs. government-planned markets), this paper provides a basis for understanding the nature of informal markets in the Vietnamese context. The results show that cheap price and convenience (proximity) are important in shaping the choice by consumers for informal markets for food, while close relationship with sellers or services provided by sellers are not. Shoppers with higher concern for freshness and safety of fresh food are more likely to shop at formal markets. Additionally, low-income shoppers are found significantly inclined toward informal markets, while higher-income shoppers tend to shop at formal markets. Therefore, these two types of market should be viewed as two marketplaces to serve two segments of consumer groups, rather than two markets competing for a share of the business.     

What Causes Banking Crises? An Empirical Investigation for the World Economy

We add the Bernanke-Gertler-Gilchrist model to a world model consisting of the US, the Euro-zone and the Rest of the World in order to explore the causes of the banking crisis. We test the model against linear-detrended data and reestimate it by indirect inference; the resulting model passes the Wald test only on outputs in the two countries. We then extract the model’s implied residuals on unfiltered data to replicate how the model predicts the crisis. Banking shocks worsen the crisis but ‘traditional’ shocks explain the bulk of the crisis; the non-stationarity of the productivity shocks plays a key role. Crises occur when there is a ‘run’ of bad shocks; based on this sample Great Recessions occur on average once every quarter century. Financial shocks on their own, even when extreme, do not cause crises—provided the government acts swiftly to counteract such a shock as happened in this sample.     

Das neue Energiewirtschaftsgesetz—Regelungen für einen erweiterten Zielkatalog

Mehr als ein Jahr nach dem EU-rechtlich vorgegebenen Endtermin wurde im Juli 2005 das neue Energiewirtschaftsgesetz verabschiedet. Von welchen Zielen geht dieses Gesetz aus? Wie lauten seine wichtigsten Neuregelungen? Und welche Auswirkungen sind von ihnen zu erwarten?     

On the short-time behavior of the implied volatility for jump-diffusion models with stochastic volatility

In this paper we use Malliavin calculus techniques to obtain an expression for the short-time behavior of the at-the-money implied volatility skew for a generalization of the Bates model, where the volatility does not need to be a diffusion or a Markov process, as the examples in Sect. 7 show. This expression depends on the derivative of the volatility in the sense of Malliavin calculus. E. Alòs’ research is supported by grants MEC FEDER MTM 2006 06427 and SEJ2006-13537. J.A. León’s research is partially supported by the CONACyT grant 45684-F. J. Vives’ research is supported by grant MEC FEDER MTM 2006 06427.     

我国县域经济可持续发展问题与对策探析

县域经济已经成为我国国民经济的重要组成部分。目前我国县域经济存在发展不平衡、产业层次和劳动力素质低下、自然资源浪费、生态环境恶化、产业要素缺乏、国家投入不合理等问题。我们应该制定县域经济的发展规划,加强对县域经济的分类指导;积极推进农业产业化,切实提高农民收入;提高劳动力素质;节约使用自然资源,保护生态环境;积极推进城镇化,促进城乡协调发展。     

中国小额信贷商业化可持续发展的经济学分析

小额信贷是指一定区域内,面向融资弱势群体的小额贷款形式.完善的小额信贷制度应该满足服务目标群体和保持商业可持续两个条件.本文从信息经济学、现代契约理论以及资金供求等方面分析商业化可持续小额信贷的效率,并针对我国目前小额信贷可持续发展的困境,认为应该从明确定位目标群体、推进利率市场化、放宽金融机构准入标准、促进模式和组织创新等方面推进商业化可持续小额信贷发展,以服务农村经济发展的需要.     

The role of R&D in high-technology trade: An empirical analysis

Conclusion This paper attempts to establish the relationship between the level of R&D activities of a country and its trade performance in high-technology products. Empirical evidence based on the limited data used in the paper shows that this relationship appears to be quite significant. An analysis of the implications of this relationship reveals that the low level of R&D in Canada is due to, among other factors, the prevalence of foreign ownership of Canadian manufacturing industries, and the resource-based characteristic of the Canadian economy. Given the nature of foreign-owned firms, the paper suggests that countries should not rely on them as a crucial instrument in the creation of an indigenous capacity to produce high-technology products which are competitive at the world level. Instead, domestic policies aimed at the development and nurturing of the countries' own scientific and technological skills are required. The views expressed in this paper are those of the author. They should not be construed as the official views of the Ministry of State for Science and Technology of the Government of Canada. Research assistance provided by Tom Wudwud and Penny Robinson is well appreciated. The author, however, is responsible for any omissions or errors that remain.