Common factors in conditional distributions for bivariate time series

A definition for a common factor for bivariate time series is suggested by considering the decomposition of the conditional density into the product of the marginals and the copula, with the conditioning variable being a common factor if it does not directly enter the copula. We show the links between this definition and the idea of a common factor as a dominant feature in standard linear representations. An application using a business cycle indicator as the common factor in the relationship between U.S. income and consumption found that both series held the factor in their marginals but not in the copula.     

Board Composition in New Zealand: An Agency Perspective

This paper looks at board composition determinants in New Zealand. We document that the proportion of outside board members is inversely related to insider equity ownership supporting the notion that these variables are substitute mechanisms in controlling agency problems. We also find that board composition is directly related to debt, ownership concentration, and profitability and inversely related to growth and firm size. There is evidence that firms with influential CEOs have lower outside board representation. Finally, we document that the passage of the legislation reforming company and securities laws in 1993 was associated with increased outside members on the board.     

Within and Beyond Communities of Practice: Making Sense of Learning Through Participation,Identity and Practice*

abstract Situated learning theory offers a radical critique of cognitivist theories of learning, emphasizing the relational aspects of learning within communities of practice in contrast to the individualist assumptions of conventional theories. However, although many researchers have embraced the theoretical strength of situated learning theory, conceptual issues remain undeveloped in the literature. Roberts, for example, argues in this issue that the notion of ‘communities of practice’– a core concept in situated learning theory – is itself problematic. To complement her discussion, this paper explores the communities of practice concept from several perspectives. Firstly, we consider the perspective of the individual learner, and examine the processes which constitute ‘situated learning’. Secondly, we consider the broader socio‐cultural context in which communities of practice are embedded. We argue that the cultural richness of this broader context generates a fluidity and heterogeneity within and beyond communities. Finally, we argue that it is sometimes difficult to distinguish conceptually between the terms ‘participation’ and ‘practice’ because of occasional duplication of meaning. We propose, instead, a refinement of the definition to allow for greater conceptual clarity.     

Testing for ‘news’ in foreign exchange markets

Traditional tests of the role of interest rate news on foreign exchange rates are analysed and found to be of little empirical value.     

Labor's share fluctuations, biased technical change, and the business cycle

We extend the basic RBC model to allow for biased technical changes. One broad definition of biased technical changes is changes that directly affect factor elasticities. Given the link between changes in factor elasticities and factor shares, observed fluctuations in US labor's share are motivation for this study. We find that when the technology shock process is calibrated according to US labor's share dynamics, 93 percent of US GDP volatility is accounted for. The observed countercyclical nature of labor's share is accounted for, although the model correlation is too high. As well, the model exhibits business cycles that are qualitatively similar to those of the standard model with neutral technology shocks. These findings, while robust to the short-run properties of various measures of labor's share, are sensitive to the average labor's share used in calibration, e.g., departing from a baseline calibration value of 63 percent, for steady-state labor's shares of 50 percent and 70 percent the model accounts for 107 percent and 84 percent of US GDP volatility respectively.     

Corruption and change: the impact of foreign direct investment

This study examines influences on the level of corruption in countries from a strategic perspective. Corruption is one of the country‐level influences on market entry, investment, and other decisions fundamental to strategic management at the international level. The study examines the impact on corruption of change in levels of foreign direct investment (FDI). It uses the Corruption Perceptions Index (CPI) scores computed by Transparency International for 1999 and 2000. Results indicate that the more rapid the rate of change in FDI, the higher the level of corruption. Higher levels of perceived corruption are associated with each of two dimensions of national culture: uncertainty avoidance and masculinity. Research and managerial implications are also discussed. Copyright © 2004 John Wiley & Sons, Ltd.     

Monotone Matching in Perfect and Imperfect Worlds

We study frictionless matching in large economies with and without market imperfections, providing sufficient conditions for monotone matching that are weaker than those previously known. Necessary conditions, which depend on a key analytical object we call the surplus function , are also offered. Changes in the surplus yield valuable information about the comparative statics of matching patterns across environments. We apply our framework to some examples adapted from the literature, accounting for and extending several comparative–static and welfare results. We also explore the dependence of the matching pattern on the type distribution.     

A conceptual framework for the location of public facilities in the urban areas of developing countries: the Nigerian case

The provision of adequate public services to their urban populations within the constraints of financial resources is a major problem of most developing countries. The fact that the few available facilities are unevenly distributed in the urban areas suggests a need for efficient physical planning of public services. This paper suggests a conceptual framework for the provision of public services in Nigerian urban areas. The paper identifies the supply and demand factors which should govern the distribution of public services in the urban areas of the country.