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Sustainability & Environment

Seeking to become a world leader in sustainability education, research, and practice.

Biodiesel is a renewable, sustainable, clean-burning biogenic fuel that can serve as a substitute for conventional ultra-low sulfur diesel (ULSD). Biodiesel is comprised of mono-alkyl esters of long chain fatty acids and is produced via transesterification, whereby glycerin is separated from the fatty acid... READ MORE
We model international trade in renewable resources between a single buyer and competitive sellers as a Stackelberg differential game. The buyer uses unit and ad valorem tariffs to indirectly encourage conservation of the renewable resource under study. First, we show that the efficacy of these... READ MORE
Various plants and resources such as orchards are vulnerable to the detrimental effects of successful invasions by alien animal or plant species. To outline an appropriate policy response, we first use renewal theory to construct a stochastic model of optimal orchard management in the presence... READ MORE
We apply the Waterway Network Ship Traffic, Energy and Environment Model (STEEM) to evaluate cost-effectiveness of three control strategies for reducing SO2 emissions from ships calling on West Coast U.S. ports, a potential SOx Emission Control Area (SECA) under international maritime regulations. Ships carrying U.S.... READ MORE
This paper presents an energy and environmental network analysis model to explore tradeoffs associated with freight transport. The geospatial model uses an intermodal network built by the authors to connect various modes (rail, road, water) via intermodal terminals. Routes along the network are characterized not... READ MORE
Worldwide concerns about sulfur oxide (SOx) emissions from ships are motivating the replacement of marine residual oil (RO) with cleaner, lower-sulfur fuels, such as marine gas oil (MGO) and marine diesel oil (MDO). Vessel operators can use MGO and MDO directly or blended with... READ MORE
Recently, Batabyal and Yoo (2007) have proposed a new probabilistic approach to orchard management. In this approach, a manager minimizes an economic criterion function, namely, the long run expected net cost of orchard management subject to an ecological constraint which says that the probability that... READ MORE