Farm Resource Regions

ERS recently constructed a new set of regions depicting geographic specialization in production of U.S. farm commodities. ERS will use the new regions to display results of its analyses in a broad array of venues from briefings to publications, our web site, and journal articles. This pamphlet introduces the new ERS Farm Resource Regions, explains their origin and rationale, and serves as a reference for our clients.Farm Management,

Proceedings Community Leader's Litter Control Workshop

PDF pages: 5

Tunable periodic microstrip structure on GaAs wafer

A one dimensional tunable periodic structure in microstip technology on gallium arsenide (GaAs) substrate is numerically investigated. The unit cell contains a number of patches positioned between the ground plane and the microstrip line. The patches, representing reactive loads, can be selectively short-circuited by externally-controlled FET switches integrated in the hosting substrate. The possibility of controlling the position of the band-gap, and implicitly the value of the e®ective dielectric constant along the line, for different combinations of the switches is demonstrate

The Enforcement of Ohio's Litter Control Laws

PDF pages: 7

AGRICULTURAL CONSERVATION POLICY AT A CROSSROADS

U.S. agricultural conservation policy has focused on a range of potential policy instruments centered on voluntary approaches tied into Depression-era commodity programs. Entering the twenty-first century, conservation policy is at a crossroads between more coercive regulatory policies, more costly voluntary programs, and more facilitative market-oriented policies. What are the pitfalls, advantages, disadvantages, and tradeoffs along these paths?Agricultural and Food Policy,

DEVELOPMENT AT THE URBAN FRINGE AND BEYOND: IMPACTS ON AGRICULTURE AND RURAL LAND

Land development in the United States is following two routes: expansion of urban areas and large-lot development (greater than 1 acre per house) in rural areas. Urban expansion claimed more than 1 million acres per year between 1960 and 1990, yet is not seen as a threat to most farming, although it may reduce production of some high-value or specialty crops. The consequences of continued largelot development may be less sanguine, since it consumes much more land per unit of housing than the typical suburb. Controlling growth and planning for it are the domains of State and local governments. The Federal Government may be able to help them in such areas as building capacity to plan and control growth, providing financial incentives for channeling growth in desirable directions, or coordinating local, regional, and State efforts.land development, sprawl, large-lot housing, land zoning, population growth, housing, specialty agriculture, high-value agriculture, rural amenities, smart growth, Land Economics/Use,

IMPLEMENTATION OF NEW CONSERVATION PROGRAMS AND THE NEED TO RESPOND TO CHANGING MARKET CONDITIONS

Resource /Energy Economics and Policy,

Regenerable metallic oxide systems for removal of carbon dioxide: A concept

Design concepts for portable canisters for removal of carbon dioxide are described. One is screen pack configuration consisting of brazed rectangular canister with four metal oxide packs inserted. Other is radial flow canister with perforated central tube. Methods of production and operating principles are presented

Solid amine compounds as sorbents for carbon dioxide: A concept

Solid amine compounds were examined as possible absorbents for removal of carbon dioxide in life support systems of type which may be employed in high altitude aircraft, spacecraft, or submarines. Many solid amine compounds release absorbed carbon dioxide when heated in vacuum, therefore, when properly packaged spent amine compounds can be readily regenerated and put back into service