Absolute Properties of the Eclipsing Binary Star V501 Herculis

V501 Her is a well detached G3 eclipsing binary star with a period of 8.597687 days for which we have determined very accurate light and radial-velocity curves by using robotic telescopes. Results of these data indicate that the component stars have masses of 1.269 +/- 0.004 and 1.211 +/- 0.003 solar masses, radii of 2.001 +/- 0.003 and 1.511 +/- 0.003 solar radii, and temperatures of 5683 +/- 100K and 5720 +/- 100K, respectively. Comparison with the Yonsei-Yale series of evolutionary models results in good agreement at an age of about 5.1 Gyr for a somewhat metal rich composition. Those models indicate that the more massive, larger, slightly cooler star is just beyond core hydrogen exhaustion while the less massive, smaller, slightly hotter star has not quite reached core hydrogen exhaustion. The orbit is not yet circularized, and the components are rotating at or near their pseudosynchronous velocities. The distance to the system is 420 +/- 30 pc

Numerical Analysis of the Transient Response of Advanced Thermal Protection Systems for Atmospheric Entry

Equations for the transfer of heat through thermal protection shields are derived in finite difference form. These equations are applicable to charring ablators, impregnated ceramics, subliming ablators, heat sinks, and insulating materials and have been programed for solution on a high-speed digital computer. In the program, thermal properties can be functions of temperature. Provision is made for analysis of heat shields subjected to simultaneous convective and radiative heat inputs. Some typical results are presented. Limited comparisons with experimental results are made

Newly found Bau Petroglyphs and the masai game "Ngeshui"

Volume: XXI

A METHODOLOGICAL INQUIRY INTO THE DETERMINATION OF THE RURAL-URBAN INTERFACE

Community/Rural/Urban Development,

Prediction of Things to Come for Exceptional Children and Adults as Seen through the Eyes of Science Fiction Writers

The problem is that education has not, to any degree, looked at science fiction as a source of information related to future problems in the lives of exceptional children and adults. By looking at science fiction that has won the Hugo and Nebula awards, it will be the purpose of this paper to examine a number of problems. 1, It will be the task of the author to show that science fiction has both in intent and by accident been a reliable predictor of future events. 2. The author will look at science fiction and identify the ways science fiction can and will, for the purpose of this paper, be used as a prognosticator of the future events in the lives of exceptional children and adults. 3, By looking at these events, the authon will be able to make recommendations as to the prediction of future events and show that science fiction is a viable tool for prognostication. 4. The author will look to an effective method of using science fiction as a prognosticator of the future course of events in the lives of exceptional children and adults

Interview of Claud Guild

Tate interviews Guild on his experiences in the mission field in Australia. The interview was conducted in Searcy, AR