We demonstrate the power of the Ensemble Kalman Filter in specifying ecosystem models ideal for bioeconomic analysis. Bioeconomic analysis requires models to be relatively simple, but models must still capture the nature and dynamics of the system. With the Ensemble Kalman Filter, we are able to...

In this article Hamilton describes the growing interest in farming among a new generation of Americans and makes detailed suggestions for how the United States Department of Agriculture (USDA) and local governments can support policies to help support them. He notes that the interest in farming...

The precise consequences of climate change remain uncertain. We incorporate damage uncertainty into a joint model of climate and the economy, an integrated assessment model. First, both the science and the integrated assessment community analyze uncertainty by means of sensitivity analysis and...

We examine the effects that variations in the international food prices have on democracy and intra-state conflict using panel data for over 120 countries during the period 1970-2007. Our main finding is that in Low Income Countries increases in the international food prices lead to a...

We address a problem of inventory management of spare parts in the context of a large energy company, producer of oil and gas. Spare parts are critical for assuring operational conditions in offshore platforms. About 200,000 different items are held in several inventory plants. The inventory...

Under the present civil Sudanese conditions, the country endures many hardships which are manifested in economic retraction, inflation, recession and stagflation. However, those are not the sole reasons for the sporadic conflicts that infest the people. Illegitimate property and economic...

Much has been reported about the adverse effects of crude oil exploration as being an indispensable source of degradation in the environment of the Niger Delta Region in Nigeria. While the logical substance of such argument is not being contested, it is instructive to observe the existence of...

This paper presents the model of an economy subject to the mass conservation principle. The economic system is related to the environment by a flow of virgin materials into the economy, and by the diffusion of waste into the environment. Ecoefficiency contributes to reducing material waste in...

This paper presents the model of an economy subject to the mass conservation principle. The economic system is related to the environment by a flow of virgin materials into the economy, and by the diffusion of waste into the environment. Ecoefficiency contributes to reducing material waste in...