Demand Shocks and Trade Balance Dynamics

This paper studies the trade balance dynamics in the G-7 countries plus Spain. We estimate a SVAR model to identify three different shocks: real supply shocks, real demand disturbances and nominal shocks. A microfounded stochastic open-economy model is built to derive the long-term identification restrictions. Estimates show that real demand shocks explain most of the variability of trade imbalances, whereas, contrary to previous findings, nominal shocks play a very limited role. These results are consistent with the predictions of a widely set of open-economy models and illustrate that demand policies are the main responsible of trade imbalances.     

Technical efficiency and productivity changes in Spanish airports: A parametric distance functions approach

This paper contributes to the airport benchmarking literature in two ways. To our knowledge, this is the first attempt at using a stochastic distance function to measure airports’ productivity changes while considering multiple outputs. Secondly, we calculate the evolution and decomposition of the Total Factor Productivity (TFP) for Spanish airports. The average rate of productivity showed a slight annual improvement of 0.9%, and the core engine of this was 3% increase in technical progress rather than through efficiency. Results, by airport, identify those needing improvement, to be more attractive in the Spanish airport restructuring program.     

An Integrated Model of the Adoption and Extent of E-Commerce in Firms

This work aims to explain firms’ decisions to adopt Internet-based e-commerce, and the extent to which the adopters subsequently implement e-commerce to commercialize their products and services. We examine various types of factors previously considered by the literature (competitive environment, organizational characteristics, strategic orientation, innovative capacity, managers’ characteristics, IT equipment possessed and the use made of it). The analytical model developed here on the basis of a sample of 2,038 firms suggests that the factors influencing the adoption decision are different from those that eventually influence the results of firms’ commercial operations on the Internet. Likewise, we discuss the contribution of each type of determinant and the implications.      

Are outsourcing and non-aeronautical revenues important drivers in the efficiency of Spanish airports?

This paper evaluates the influence of contracting out, or outsourcing, certain airport services and of commercial diversification strategy. Although most of the effort is being put towards applying non-parametric techniques in airport efficiency studies, we have chosen parametric methodology. We use a distance function, as it has known advantages. The findings show the positive contribution of outsourcing and non-aeronautical revenues on the efficiency of the Spanish airports' network.     

Management sub-advising in the mutual fund industry

This is a study of how contractual mechanisms can mitigate agency conflicts in sub-advised mutual funds. Sub-advising contracts allow fund families to expand their product offerings to include new investment styles and thereby gain market share. We show that costly contractual arrangements, such as co-branding, multi-advising, and performance-based compensation, can mitigate agency conflicts in outsourcing and protect investors from potential underperformance. Fund families will find it cost-effective to implement such incentive mechanisms only when investors are sophisticated in assessing manager skill. The findings help to explain why a large percentage of fund families outsource their funds to advisory firms.     

Accounting conservatism and the profitability of corporate insiders

We predict that accounting conservatism influences insiders' opportunities to speculate on good and bad news, and thus, insider trading profitability. We find that greater conditional (unconditional) conservatism is associated with lower (higher) insiders' profitability from sales. We find limited evidence that conservatism influences profitability from purchases. These findings are consistent with our hypotheses on the different informational roles of conditional and unconditional conservatism, and on the asymmetric influence of conservatism over the opportunities to speculate on good versus bad news. Our research design takes into consideration the endogenous nature of insiders' trading and conservatism. The results are robust to different measures of conservatism and a number of additional analyses.     

An empirical note about additive outliers and nonstationarity in Latin-American inflation series

This note shows the empirical dangers of the presence of large additive outliers when testing for unit roots using standard unit root statistics. Using recent proposed procedures applied to four Latin-American inflation series, I show that the unit root hypothesis cannot be rejected.Jel classification: C2, C3, C5I want to thank Pierre Perron for useful comments on a preliminary version of this paper. Helpful comments from an anonymous referee, and Yiagadeesen Samy are appreciated. I thank the Editor Baldev Raj for useful comments about the final structure of this paper. Finally, I also thank André Lucas for helpful suggestions concerning the use of his nice computer program Robust Inference Plus Estimation (RIPE).First revision received: August 2001/Final revision received: December 2002     

The world wide web in the food and beverage sector in Spain

Despite its potential, the World Wide Web is not yet a real or viable alternative for marketing channels in Spain. This research attempts to identify and evaluate the factors that contribute and facilitate the development of the Web as an environment for commercial activities in the food and beverage sector in Spain. Spanish consumers have traditionally shown little interest in all forms of distance buying and direct marketing. A range of factors may facilitate this development such as continuous growth in access to the Internet, continued evolution of computer technology, reductions in Internet connection tariffs, and communication speed. Consumers' income, the availability of information online, and the online consumption experience may also act as an impulse for commercial developments on the Web.     

Health Systems and Health Reform in Europe

The organisation of health care differs widely across Europe. Access to services, financing schemes, incentives for better care, and administrative efficiency are challenges that are being dealt with in a variety of ways. Are insurance-based systems the best solution for balancing resources and services or are national health funds preferable? Does the introduction of competition fulfil high hopes for better service at lower costs? What are the relative advantages and drawbacks of central and local management of health care?