This paper examines alternative methods which have been used to measure aggregate energy consumption over time. It is found that many of the measures which have been widely used in empirical studies are not appropriate for economic analysis. The concept of 'useful energy', popular in engineering...

Should privately informed agents with diverging interests act independently or should they commit to a mechanism? This paper analyzes different communication and decision protocols when communication involves delay. It studies under which conditions agents should (i) choose their actions...

This paper challenges the widespread view that forward exchange premia contain little information regarding subsequent spot rate movements. Using weekly dollar/Deutschmark and dollar/sterling data, we show that spot and forward exchange rates are well represented by a vector error correction...

While ageing is accepted as a major problem for most industrialized societies, its labour market consequences are not yet fully understood. This paper analyses the effects of changes in the age composition of the Federal Republic of Germany on the incidence of unemployment in different sex-age...

This paper provides evidence for a low frequency relationship between unemployment, inflation and the nominal interest rate. I show that in the United States from 1959.1 to 1991.3, the unemployment rate, the inflation rate and the federal funds rate can be modelled as non stationary time series...