REGULATION AND RISK: A CROSS‐COUNTRY SURVEY OF REGULATED COMPANIES

This paper tests empirically whether regulation characterized by high incentives implies more risk to firms than regulation characterized by low incentives. Using a worldwide panel of 170 regulated companies operating in electricity, gas, water, telecommunication and transportation sectors during the period 1995–2004, I find that different regulatory regimes do not result in different levels of risk to their regulated firms. This result could be driven by a higher level of development of financial markets combined with a sophisticated diversifying behaviour of regulated firms.     

Conference Calls and Stock Price Volatility in the Post‐Reg FD Era

Past research has documented that the utilisation of conference calls is greater in the high tech sector than in other industries. Do high tech firms benefit from that? This study attempts to answer this question by examining the impact of ‘post‐Reg FD’ conference calls on the price volatility of high tech firms listed in the US market. We find evidence that more open conference calls results in lower idiosyncratic volatility.     

Managing complexity： A problem of chaos in fisheries policy

This work intends to present chaos theory （and dynamical systems such as the theories of complexity）, in terms of interpretation of ecological phenomena. The chaos theory applied in the context of ecological systems, especially in the context of fisheries has allowed the recognition of the relevance of this kind of theories to explain fishing phenomena and fisheries policies. It has permitted new advances in the study of marine systems, contributing to the preservation of fish stocks. This paper deals with the way how to manage fisheries taking chaos in account of the problem.     

RISK AND UNCERTAINTY IN CENTRAL BANK SIGNALS: AN ANALYSIS OF MONETARY POLICY COMMITTEE MINUTES

This paper considers the signalling aspect of monetary policy. We introduce a heuristic framework for the study of signal uncertainty, and use this to analyse the signal uncertainty implicit in the communications of the Bank of England's Monetary Policy Committee (MPC). Our findings suggest that frequencies of key terms expressing signal uncertainty in MPC minutes may either reflect the degree of confidence implicit in MPC deliberations, or offer evidence for the presence of an irreducible kind of signal uncertainty that shows up as white noise, casting doubt on the soundness of the various qualitative uncertainty indices found in the literature.     

Networks of queues with infinite servers in each node applied to the management of a two echelons repair system

After a report of results about infinite servers queues, essentially on its busy period, a model is built, using networks of queues with infinite servers in each node, to study a two echelons repair system for example of a fleet of aircraft, shipping or trucks. The customers are the failures, and their service time is the time that goes from the instant at which they occur till they are completely repaired. The failing repairs occur in a base or in a remote station. The whole failures detected in the base are repaired there. Some of the failures detected in the station are repaired there and the others in the base. The results referred above allow the determination of a two echelons repair system performance measures. In this application, models of Carrillo （1991） and Ferreira （1996） are considered, improved and completed. The theory is illustrated with a numerical example.     

Economic Risk and Political Risk in Fiscal Unions

A fiscal programme that redistributes income from rich to poor individuals indirectly redistributes tax revenues from regions hit by a favourable shock to regions hit by an unfavourable one. Centralised fiscal redistribution has therefore been advocated as a way to insure individuals against region-specific shocks. In this paper, we argue that a centralised fiscal policy, while reducing the uncertainty on the tax base, may create additional uncertainty on the tax rate. Using a simple model we show that the higher uncertainty on the policy instrument might more than offset the lower uncertainty on the tax base.     

Price and Inventory Dynamics of Primary Commodities

The paper develops a simple framework for the analysis of price and inventory dynamics of primary commodities under the assumption of rational expectations. The analysis shows that if an unanticipated shock primarily affects the demand conditions for inventories, the effect on prices is only temporary. However, when the flow conditions of production and consumption are altered, the change in price tends to become permanent. These results highlight the crucial importance of identifying the markets which originate fluctuations in prices when setting out policy measures to stabilize these fluctuations. [210]