Policy intervention in the biofuel market has led to a significant increase in biofuel production and use in the past several years. However, the welfare effect of biofuelpolicies, specifically the ethanol tax credit for corn ethanol, ethanol import tariff andrenewable fuel standard (RFS)...

Biofuels have been promoted to achieve energy security and as a solution to reducing greenhouse gas (GHG) emissions from the transportation sector. This dissertation presents a framework to examine the extent to which biofuel policies reduce gasoline consumption and GHG emissions and their...

This paper uses stylized analytical and numerical general equilibrium models to evaluate the welfare impacts of alternative policies for reducing nitrogen run-off from agricultural production in an open economy while recognizing the presence of distortionary agricultural support subsidies and...

Using data from 1995 and 1996, we estimate the cost of the Arizona Enhanced I/M Program and the emission reductions achieved. We begin by enumerating briefly the components of I/M costs and discuss their size and incidence. Then we describe the empirical information from Arizona and how we use...

The expense and inconvenience of enhanced vehicle emissions testing using the full 240-second dynamometer test has led states to search for ways to shorten the test process. In fact, all states that currently use the IM240 allow some type of fast-pass, usually as early in the test as second 31,...

This paper explores the influence of the behavior of the Forest Service and Bureau of Land Management on effective public policy toward the national forests. It shows that fluctuations in stumpage sales from such forests have been large. Furthermore, those fluctuations could well have a...

Plug-in Hybrid Electric Vehicles (PHEVs) will soon start to be introduced into the transportation sector, thereby raising a host of issues related to their use, adoption and effects on the electricity sector. Their introduction has the potential to significantly reduce carbon emissions from the...

This dissertation examines three themes of efficiency in fisheries economics and management.The first theme is intertemporal efficiency; by examining fishery managementproblems within a stochastic bioeconomic model, the tradeoffs between current and futureconsumption are clear. The second theme...

This article uses a general equilibrium framework and econometric analyses to examine economic wide impacts of the Conservation Reserves Program. It determines direct and indirect factors which affect the economic efficiency of the program and shows their magnitudes. It shows that the...

This paper develops a model of farmer decision-making to examine the extent to which uncertainties about the performance of site-specific technologies (SSTs) and about the weather impact the value of these technologies. The model uses the jointly estimated risk and technology parameters to...