In this paper we first describe the legal and administrative basis of mandates that variously require and eschew economic measures for environmental management. We then summarize the steps involved in benefit-cost analysis and what can and cannot be accomplished with such information. Our basic...

"While most economists expect some marginal conditions to result from basic expected value models involving government expenditures and homeland security investments, such models are not readily found in the literature. The article presents six basic models that all incorporate uncertainty; they...