水体中有机污染综合指标的快速监测方法进展

水体的有机污染综合指标主要有COD,BOD和TOC,研发以上指标的快速测定方法具有十分重要的现实意义。介绍了COD,BOD和TOC等指标的快速监测方法的进展。     

Bank Consolidations and Minority Neighborhoods

This paper explores the relationship between neighborhood racial composition and the level of banking services. We use unique census tract-level data on banking services and neighborhood characteristics in Alameda County, California, from points in time before and after the recent wave of bank consolidations to eliminate as well as possible the potential for omitted variables bias that could plague cross-sectional study of the issue. Using a variety of specifications and numerous sensitivity checks, we find that minority neighborhoods (particularly black neighborhoods) are less likely to have banking services, and are more likely to lose services during bank consolidations.     

MODELING THE INCIDENCE OF SELF‐EMPLOYMENT: INDIVIDUAL AND EMPLOYMENT TYPE HETEROGENEITY

Modeling the incidence of self‐employment has traditionally proved problematic. Although the supply‐side characteristics of the self‐employed are well documented, we argue that the literature has neglected demand‐side aspects. We explore the determinants of self‐employment using the U.S. Survey of Consumer Finances. We present results from an econometric framework that allows us to model, separately and simultaneously, the influences of individual heterogeneity (i.e., supply‐side factors) and employment type heterogeneity (i.e., demand‐side factors) on the probability of self‐employment. Our findings suggest that while individual characteristics are important determinants of self‐employment, there are factors specific to the type of employment that influence self‐employment. (JEL J23, J33, C25, C10)     

The Resource Dependence, Service and Control Functions of Boards of Directors in Hong Kong and Taiwanese Firms

Since the Asian financial crisis of the late 1990's, there have been numerous calls for the reform of East Asian corporate governance. Without reform, fears abound that the crisis will return. However, a baseline understanding of corporate governance in East Asia needs to be established before reform efforts can begin. In the West, three major functions of boards are commonly recognized: resource dependence, service, and control. These functions have yet to be examined in the context of boards of directors of Overseas Chinese firms in East Asia. In this exploratory study, we examine the extent to which these functions are performed, primarily by outside board members, in Overseas Chinese firms in Hong Kong and Taiwan. We find that the service and control functions are less pronounced for East Asian boards than what would be expected in the West, while the resource dependence function is more pronounced. We also findthat the governance of the region is being moved closer to international practices by a new generation of leaders that have been exposed to Western influences and intense global competition. The implications of our findings for managers, educators, and researchers are discussed.     

How Much Do We Know About Wealth Distribution in Australia?

This paper surveys what is known about wealth distribution in Australia and concludes that our knowledge is scanty. The most reliable evidence comes from studies using probate returns and with the abolition of estate duties, these studies are becoming out of date. However, it is clear that wealth is very unequally distributed. The top 5 per cent of adult individuals own between 40 and 50 per cent of the wealth. This inequality is not just due to life cycle effects, and there is no strong evidence that wealth distribution has become more equal in Australia in the period since the First World War.