High-Precision Thermodynamics and Hagedorn Density of States

We compute the entropy density of the confined phase of QCD without quarks on the lattice to very high accuracy. The results are compared to the entropy density of free glueballs, where we include all the known glueball states below the two-particle threshold. We find that an excellent, parameter-free description of the entropy density between 0.7Tc and Tc is obtained by extending the spectrum with the exponential spectrum of the closed bosonic string.Comment: 4 pages, 3 figure

Compliance with child support orders in divorce cases

This paper examines compliance with child support orders by divorced fathers in Wisconsin. Compliance increases as the income of the father increases, although it falls in the highest income category. The "burden" of awards does not affect compliance unless more than 30 percent of income is owed. More stringent enforcement systems increase compliance. We find that most divorced fathers who are not complying with their orders do not have very low incomes, in contrast to noncomplying fathers in nonmarital cases. This suggests that the best policies to increase compliance among divorced fathers may differ from those for nonmarital fathers.

Drag reduction obtained by rounding vertical corners on a box-shaped ground vehicle

A box-shaped ground vehicle was used to simulate the aerodynamic drag of delivery vans, trucks, and motor homes. A coast-down method was used to define the drag of this vehicle in a configuration with all square corners and a modified configuration with the four vertical corners rounded. The tests ranged in velocity from 30 miles per hour to 65 miles per hour, and Reynolds numbers ranged from 4.4 x 1,000,000 to 1.0 x 10 to the 7th power based on vehicle length. The modified configuration showed a reduction in aerodynamic drag of about 40 percent as compared to the square cornered configuration

On qpqp-Deformations in Statistical Mechanics of Bosons in D Dimensions

The Bose distribution for a gas of nonrelativistic free bosons is derived in the framework of $qp$-deformed second quantization. Some thermodynamical functions for such a system in D dimensions are derived. Bose-Einstein condensation is discussed in terms of the parameters q and p as well as a parameter $\nu_0'$ which characterizes the representation space of the oscillator algebra.Comment: 15 pages, Latex File, to be published in Symmetry and Structural Properties of Condensed Matter, Eds. T. Lulek, B. Lulek and W. Florek (World Scientific, Singapore, 1997

Patterns of Child Support Compliance in Wisconsin

This paper examines five-year compliance patterns among Wisconsin child support cases that came to court in 1986–88. We find only limited support for the common assumption that compliance with child support orders declines over time: the average percent paid is about .65 during each of the first five years. The most predominant trend is an increasing polarization into groups of nonpayers and full payers. Although we find considerable stability from year to year among nonpayers and full payers, there is considerable change over the course of five years. Compliance during the first year provides some indication of long-term compliance, but about half of fathers change their compliance rate over the period. We find important differences between divorced and nonmarital fathers, differences that are more pronounced than are apparent from a single year of data. Policy implications are discussed and further research is suggested.

A Class of Functional Equations of Neutral Type

Class of functional integral equations in space of continuous function

Manufacturing process applications team (MATeam)

Activities of the manufacturing applications team (MATeam) in effecting widespread transfer of NASA technology to aid in the solution of manufacturing problems in the industrial sector are described. During the program's first year of operation, 450 companies, industry associations, and government agencies were contacted, 150 manufacturing problems were documented, and 20 potential technology transfers were identified. Although none of the technology transfers has been commercialized and put in use, several are in the applications engineering phase, and others are in the early stages of implementation. The technology transfer process is described and guidelines used for the preparation of problems statements are included