The standard vector error correction (VEC) model assumes the iid normal distribution of disturbance term in the model. This paper extends this assumption to include GARCH process. We call this model as VEC-GARCH model. However as the number of parameters in a VEC-GARCH model is large, the...

This paper evaluates if and how speculation affects the volatility of commodity futures: it distinguishes between short term and long term measures of speculation and investigates if the impact on volatility is different. Speculation is measured by means of four indexes: scalping, Working’s T,...

Options should play an important role in asset allocation. They allow for kernel spanning and provide access to additional (priced) risk factors such as stochastic volatility and negative jumps. Unfortunately, traditional methods of asset allocation (e.g. mean-variance optimization) are not...

This paper examines the e-learning strategies adopted by universities, from the perspective of three common objectives: widening access to educational opportunity; enhancing the quality of learning; and reducing the cost of higher education. The discussion is illustrated by drawing on case...

The April 21, 2005 issue of the LONDON REVIEW OF BOOKS carried a lead article titled ‘Blood for Oil?’ The paper is attributed to a group of writers and activists – Iain Boal, T.J. Clark, Joseph Matthews and Michael Watts – who identify themselves by the collective name ‘Retort.’ In...

Over the past century, the institution of capital and the process of its accumulation have been fundamentally transformed. By contrast, the theories that explain this institution and process have remained largely unchanged. The purpose of this paper is to address this mismatch. Using a broad...

How should firms decide whether and when to invest in new capital equipment, additions to their workforce, or the development of new products? Why have traditional economic models of investment failed to explain the behavior of investment spending in the United States and other countries? In...