A note on completeness in large financial markets

We study completeness in large financial markets, namely markets containing countably many assets. We investigate the relationship between asymptotic completeness in the global market and completeness in the finite submarkets, under a no-arbitrage assumption. We also suggest a way to approximate a replicating strategy in the large market by finite-dimensional portfolios. Furthermore, we find necessary and sufficient conditions for completeness to hold in a factor model.     

Some considerations on a class of macro-economic production functions

Summary It is demonstrated that dimensional analysis can be a tool in investigating the properties of a production function. First, the economic implications of the CES Function are shown. Secondly, endorsing the statements made by the SMAC Group that the Leontief and the Cobb and Douglas types of the production function arise as limiting cases of the CES production function, detailed proofs of these statements are given that maintain the dimensional homogeneity in proceeding to the limits. It is shown that certain dimensional constants of the CES production function become dimensionless entities in the limit.Finally, an expression for the curvature of the isoquants is derived. A dimensionally homogeneous relation is presented between the elasticity of substitution, the slope, the curvature and the factor endowments. This relation can be used to derive a general Variable Elasticity of Substitution production function.1970-71 Visiting Professor, Department of Economics, F.S.U. (Florida State University, Tallahassee, Florida, U.S.A.).The authors thank Professor Th. van de Klundert, Dr. H. de Haan and Dr. S. K. Kuipers for their useful comments on the first draft of this paper.     

Conflict, Distribution and Population Growth

This paper studies an optimal foraging model where distributive conflicts among foragers emerge from population growth. It investigates distributive rules set to resolve the conflicts. Efficient distributive rules are the ones associated with the most efficient productive decisions. Unequal societies, where the ruling class or King maximizes the surplus, engender the choice of more efficient productive combinations and to a smaller population relative to egalitarian societies.     

China's Accession to the World Trade Organization: What Is at Stake for Agricultural Markets?

We analyze the impact of China's accession to the World Trade Organization on major crop and livestock markets using the Food and Agricultural Policy Research Institute (FAPRI) modeling framework. We incorporate expected changes in consumer income, textile production, and trade policies as exogenous shocks to the baseline model. Following accession, revenues decline in China's livestock, grain, and oilseed industries, while cotton production prospers despite increased imports. Chinese consumers benefit from lower food prices, with vegetable oil, dairy, and meat consumption increasing significantly. Argentina, Brazil, Canada, the European Union, and the United States are the greatest beneficiaries from expanded agricultural trade with China.     

Organizational Commitment in Mexican Small and Medium-Sized Firms: The Role of Work Status,Organizational Climate,and Entrepreneurial Orientation*

In this study, we examine the role of individuals' commitment in small and medium-sized firms. More specifically, we argue that employees will commit themselves to their firm based on their current work status in the firm, their perception of the organizational climate, and the firm's entrepreneurial orientation. We also examine how individuals' commitment affect the actual effort they exert vis-à-vis their firm. The study's hypotheses are tested by applying quantitative analyses to survey data collected from 863 Mexican small and medium-sized businesses. We found that individuals' position and tenure in the firm, their perception of psychological safety and meaningfulness, and the firm's entrepreneurial orientation all are positively related to organizational commitment. We also found a positive relationship between organizational commitment and effort. Finally, our findings show that organizational commitment mediates the relationship between many of the predictor variables and effort. We discuss the limitations and implications of our findings and provide directions for future research.     

Labour Market Assimilation of Recent Immigrants in Spain

This article provides a preliminary analysis of the employment and occupational assimilation of recent immigrant waves to the Spanish labour market as their residencies lengthen. Using Spanish data from the 2001 Population Census and the 2002 Earnings Structure Survey, we find evidence of immigrant employment and occupational assimilation significantly varying by gender, origin and educational attainment.     

Ceo Locus of Control and Small Firm Performance: an Integrative Framework and Empirical Test*

Previous research on the impact of chief executive officer (CEO) locus of control is mainly based on simple and partial mappings of bivariate associations between CEO locus of control and organizational outcomes. In addition, distinct substreams have emerged in which intricately related phenomena are studied separately. to overcome this fragmentation and polarization, we provide and empirically test an integrative framework based on previously tested hypotheses on the impact of CEO locus of control. Our approach differs from prior research in two ways. First, it simultaneously takes account of strategic choice and firm performance in order to assess the extent to which strategy mediates the relationship between CEO locus of control and organizational performance. Second, we consider the CEO to be both a formulator and implementor of organizational strategies. Besides the observation that CEO locus of control seems to matter a lot in terms of explaining organizational performance in the present sample, our results demonstrate that an integrative approach increases our insight into the impact of CEO locus of control by revealing why some CEOs achieve higher organizational performance than others.     

Is big better? On scale and scope economies in the Portuguese water sector

The ‘big is better’ idea has recently been challenged in network industries. Scale economies are considered finite so that for the individual utility an optimal scale of operations arises. A similar observation yields for scope economies as joint production is not predicted univocally anymore. In the water sector, scale economies and joint production are preferred. Nevertheless, several countries are restructuring the sector in order to improve the scale and scope of operations. This article intends to provide some insights into this matter. We analyze the Portuguese water market structure using non-parametric techniques with data from the year 2005. After surveying the literature on scale and scope economies, we discuss the peculiarities of the Portuguese water sector. The paper confirms the natural monopoly features. Although scope economies are absent, it highlights scale economies. The optimal scale of the utilities is located between 160,000 and 180,000 inhabitants. As such, the Portuguese water sector optimally counts 60 water utilities.