This paper uses a variant of the Lotka-Volterra system explaining the dynamic interaction between populations of infected and healthy individuals in which the demographic and epidemiological parameters (the net healthy birth rate, the death rate of the infected and the infection rate) are...

We consider the links between the health structure of the population and The productive system of an economy which is subject to infectious disease, in particular tuberculosis. Reviewing the models of tuberculosis suggests that a Lotka-Volterra system can capture the dynamics of epidemics. We...

We postulate that the causes of the problem of invasive alien species are primarily economic and as such, require economic solutions. Invasive alien species are of increasing concern for four reasons. First, introductions are increasing sharply, while mechanisms for excluding or eradicating...

This paper considers the joint investment and labour contracts (employment and wage compensation) for a firm which has private information over its expost revenues. There is costly state observation for investors in the firm; workers can free ride on any investors state observation. The...

Environmental quality and economic development are often thought to be causally linked. This paper empirically examines the impact of economic growth and international environmental treaties on air pollution emissions in several transition countries using panel data analysis. The results...

We use a simple Lotka-Volterra model of the disease transmission process to analyse the dynamic population structure in two scenarios. Firstly a vaccine is available\ on the market at a constant price through time. Secondly, the vaccine is publicly provided. The vaccine works either by giving...