General S-Matrix Methods for Calculation of Perturbations on the Strong Interactions

Recently, the authors proposed an on-the-mass-shell, S-matrix method for computing the effects of small perturbations on the masses and coupling constants of strongly interacting particles. In the present paper, the method is generalized to the multichannel case. The use of group-theoretical techniques in reducing the complexity of the method is described in detail

Analysis of Agricultural Economics for the Central Valley Project Improvement Act Programmatic Environmental Impact Statement

Environmental Economics and Policy,

An Economic Model of Water Transfer Analysis for the Central Valley Project Improvement Act

Resource /Energy Economics and Policy,

Detailed simulations of cell biology with Smoldyn 2.1.

Most cellular processes depend on intracellular locations and random collisions of individual protein molecules. To model these processes, we developed algorithms to simulate the diffusion, membrane interactions, and reactions of individual molecules, and implemented these in the Smoldyn program. Compared to the popular MCell and ChemCell simulators, we found that Smoldyn was in many cases more accurate, more computationally efficient, and easier to use. Using Smoldyn, we modeled pheromone response system signaling among yeast cells of opposite mating type. This model showed that secreted Bar1 protease might help a cell identify the fittest mating partner by sharpening the pheromone concentration gradient. This model involved about 200,000 protein molecules, about 7000 cubic microns of volume, and about 75 minutes of simulated time; it took about 10 hours to run. Over the next several years, as faster computers become available, Smoldyn will allow researchers to model and explore systems the size of entire bacterial and smaller eukaryotic cells

The Ethanol Decade: An Expansion of U.S. Corn Production, 2000-09

The recent 9-billion-gallon increase in corn-based ethanol production, which resulted from a combination of rising gasoline prices and a suite of Federal bioenergy policies, provides evidence of how farmers altered their land-use decisions in response to increased demand for corn. As some forecasts had suggested, corn acreage increased mostly on farms that previously specialized in soybeans. Other farms, however, offset this shift by expanding soybean production. Farm-level data reveal that the simultaneous net expansion of corn and soybean acreage resulted from a reduction in cotton acreage, a shift from uncultivated hay to cropland, and the expansion of double cropping (consecutively producing two crops of either like or unlike commodities on the same land within the same year).Agricultural Resource Management Survey (ARMS), bioenergy, ethanol, indirect effects, land use, corn production, environmental impacts, Environmental Economics and Policy, Land Economics/Use, Resource /Energy Economics and Policy,

The Changing Settlement Patterns And Housing Types Of The Upper Tanana Indians

Thesis (M.A.) University of Alaska Fairbanks, 197

Waterfowl Ecology and Utilization of Uinta Mountain Water Areas

Waterfowl utilization was recorded by observing study units at different elevations from the time water areas were thawed in the spring until they were frozen in the fall. Sixteen species of waterfowl were observed in the Uinta Mountain; mallards, green-winged teal, pintails, and ring-necked ducks were breeders. Ninety-eight percent of all waterfowl observed were below 10,000 feet. Waterfowl numbers were highest during migratory periods and lowest in the breeding season. Adult waterfowl were observed most often on natural water areas and beaver ponds greater than one acre. Water areas at lower elevations had high indices of aquatic invertebrates and contained aquatic plants with high seed producing capabilities whereas water areas at high elevations had little water-fowl food

New Zealand Handbook, 5th Edition (Review)

New Zealand Handbook, 5th edition. by Jane King, 1999; 512 pages, illustrations, photos and maps. US$18.95; UK £ 12.99; CAN$ 29.50 ISBN: 1-56691-165-6. Moon Travel Handbooks, Emeryville, CA Review by Steven Roger Fischer</p