Trends in Higher Education Affecting the College and University Library

published or submitted for publicatio

Panel discussion: inherent conflict in international trade

Economic development ; International trade

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,

Optimization of the lithium/thionyl chloride battery

The progress which has been made in modeling the lithium/thionyl chloride cell over the past year and proposed research for the coming year are discussed. A one-dimensional mathematical model for a lithium/thionyl chloride cell has been developed and used to investigate methods of improving cell performance. During the course of the work a problem was detected with the banded solver being used. It was replaced with one more reliable. Future work may take one of two directions. The one-dimensional model could be augmented to include additional features and to investigate in more detail the cell temperature behavior, or a simplified two-dimensional model for the spirally wound design of this battery could be developed to investigate the heat flow within the cell

COMPARISON OF MICHIGAN FARMLAND RETURNS TO NONFARM INVESTMENTS

Farmland is both a financial investment and a production resource when it is used by the farm family in generating income for the business. The resource is used in producing crops for sale or feed for animals. The basic choices for controlling land are ownership and lease. Land leases allows the control of land for income generation, but it does not allow the lessor to participation in the investment characteristics of the property. Land ownership provides a means for gaining income for the business as well as capital gains for the owner's wealth accumulation. Agricultural land prices increased for almost 50 years until the agricultural financial crisis in the 1980's halted the upward movement in values. From 1981 to 1987, Michigan farmland prices decreased 37 percent. How does the return to farmland compare to the yield from nonfarm investments in the last 10 years? Is agricultural land a good investment? The purpose of this article is an evaluation of investment returns from Michigan farmland for the owners, and a comparison of the returns over time with competing long-term nonfarm investments.Land Economics/Use,

Solar cell workshop

The workshop addressed three issues in respect to the NASA solar cell technology requirements for future orbital missions. First, technology areas were identified that were considered most significant and the deficiencies and concerns that were had with each area are indicated. Second, the tasks that should be undertaken to reduce the costs and risks of future orbital power systems are recommended. Third, an attempt to identify the lowest priority items in the present program in terms of content and timing are made

Dead Zones and the Diversity of Exoplanetary Systems

Planetary migration provides a theoretical basis for the observed diversity of exoplanetary systems. We demonstrate that dust settling - an inescapable feature of disk evolution - gives even more rapid type I migration by up to a factor of about 2 than occurs in disks with fully mixed dust. On the other hand, type II migration becomes slower by a factor of 2 due to dust settling. This even more problematic type I migration can be resolved by the presence of a dead zone; the inner, high density region of a disk which features a low level of turbulence. We show that enhanced dust settling in the dead zone leaves a dusty wall at its outer edge. Back-heating of the dead zone by this wall produces a positive radial gradient for the disk temperature, which acts as a barrier for type I migration.Comment: 2 pages, 1 figure, published in Proceedings IAU Symposium No. 27