A factor proportions model examines the effects of falling energy input and its rising price in the US economy based on a novel production function motivated by the definition of physical work. This physical production function specifies separate interaction of energy and labor with capital,...

A unified growth model is presented in which productivity growth is driven by learning-by-doing. We show that the growth rate of productivity is an increasing function of the share of capital. It is assumed that the industrial sector has a higher capital share than the agricultural sector and...

We empirically estimate the substitutability of fixed and mobile services for telecommunications access using a large, U.S. household survey1 conducted over the period 1999-2001. We take advantage of telephone price subsidy programs for low-income households to identify large, exogenous changes...

There is a substantial number of cases where the a priori relationship between products is not at all clear in the sense that although apparent to be clear substitutes may turn out to be in fact complements, or vice-versa. This paper aims to study the relationship between fixed and mobile...

This study examines the growth of global mobile telephony and the economic factors that affect this growth. Mobile telephony has exhibited substantial growth in the decade to 2000 and this growth is expected to continue with the introduction of technically advanced mobile cellular networks. A...

Yohe and Tol (2001) built an indexing method for vulnerability based on the hypothesis that the adaptive capacity for any system facing a vector of external stresses could be explained by the weakest of eight underlying determinants – the so-called “weakest link” hypothesis. Subsequent...