2,376 research outputs found
Variational bounds on the energy dissipation rate in body-forced shear flow
A new variational problem for upper bounds on the rate of energy dissipation
in body-forced shear flows is formulated by including a balance parameter in
the derivation from the Navier-Stokes equations. The resulting min-max problem
is investigated computationally, producing new estimates that quantitatively
improve previously obtained rigorous bounds. The results are compared with data
from direct numerical simulations.Comment: 15 pages, 7 figure
BALANCING PRODUCTIVITY AND ENVIRONMENTAL BENEFITS IN THE ENVIRONMENTAL QUALITY INCENTIVE PROGRAM (EQIP)
A concern with productivity has to be tempered with our history of declining real prices for agricultural commodities which signal to some degree a certain amount of excess capacity in agriculture in the United States. Thus, environmental concerns today may logically outweigh productivity concerns. Conservation Programs that preceded the present EQIP program, such as the ACP, often had a productivity component that also was designed to help redistribute income to farmers. In terms of productivity, this may have been as direct as subsidizing the application of lime or the installation of drainage. It may have been more indirect, such as improving damaged lands that could then be returned to production. In any case, some portion of conservation programs was seen as productivity enhancing. This was viewed as a worthwhile public expenditure as was the income transfer that went along with it.Environmental Economics and Policy,
THE ENERGY TRANSITION: BACKGROUND ON SYNTHETIC FUEL ALTERNATIVES
Resource /Energy Economics and Policy,
Is Agribusiness Any Different?
The Viability of Specialized Fields in Agricultural Economics is addressed. The critical question for longevity is, what makes it special? Examples that illustrate how specialties emerge, how they change, and what makes them viable over time is presented. The primary question of: Is Agribusiness Any Different and Is There A Place For It? is set against the background of a need to recognize that Business education today has a high perceived value. Business education today has its focus on analysis. The author believes there is a place for agribusiness if it creates a focus more aligned with what will go on in business.Agribusiness,
Agricultural/Renewable Contributions to U.S. Electricity Usage
Resource /Energy Economics and Policy,
U.S. Ethanol Policy: Is It the Best Energy Alternative?
U.S. ethanol policy has several drivers. Among these are increasing the incomes of U.S. corn farmers, enhancing the environment, providing a source of sustainable energy, and reducing dependence on foreign oil. Each of these has its own advocates and critics. While it is true that ethanol production can enhance the incomes of corn farmers, some ask who benefits more from the public subsidy of ethanol production – farmers or processors. Some question whether ethanol always delivers a clean air benefit and whether it provides a source of sustainable energy while reducing dependence on foreign oil. The large public subsidy provided for ethanol production is yet another issue. While all of the above considerations relate to ethanol policy, this article focuses primarily on energy-related issues. The context for ethanol policy is U.S. energy policy, which is almost exclusively supply driven. Consistent with this thrust, the current target is to increase annual ethanol production from 3 billion to 5 billion gallons over the next several years. At the direct subsidy level of 2.6 billion. The question is, what other options might provide better energy alternatives on the basis of cost and other considerations?Agricultural and Food Policy,
MARKET PERFORMANCE AND PRICE DISCOVERY ISSUES IN AN INDUSTRIALIZED AGRICULTURE
Demand and Price Analysis,
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