The intention of this article is to take advantage of recent discoveries in econometrics (ARCH processes) to reformulate classical tests about the efficiency of financial market. It is also intended to improve the quality of stock index forecasts. Classical tests about the efficiency are...

Most research concerning e-business offers a methodology, measures the predisposition of the firm or evaluates the consequences in terms of management.This research aims at designing a model for assessing e-business strategies based on the strategic alignment perspective.Using the Information...

This article describes the theoretical basis and real-life application of the two main types of instruments – regulatory and economic – used in environmental protection policy, and in particular, in climate change policy. It outlines the context and issues at stake in the choice of...

This paper analyses the effects of money shocks on macroeconomic aggregates in a tractable flexible-price, incomplete-markets environment that generates persistent wealth inequalities amongst agents. In this framework, current inflation redistribute wealth from the cash-rich employed to the...