no abstract provided by author / Master of Architecture

An analytical and experimental study was done to determine the effect of entrainment on the heat transfer to a single, plane, turbulent impinging jet. Solutions to the momentum and energy equations were obtained with similarity and series analyses. The analytical model is compared with measured heat transfer rates to single air jets impinging normally on an isothermal heated surface. To determine the effect of entrainment, the temperature of the environment surrounding the jet was varied between the initial temperature of the jet and the plate temperature. Results obtained for jet arrays show that entrainment of air in the recirculation region between the jets can significantly affect the heat transfer rates. Comparison of the analytical model to the measured heat transfer rates for jet arrays shows that the single jet model can be successfully applied to jet arrays when the effect of entrainment is considered. / Master of Science

This thesis examines the effects of marriage and childbirth on industrial sector location of women in a longitudinal analysis, using the National Longitudinal survey of Labor Market Experience, Young Women File for years 1968 to 1975. Contrary to theoretical assumptions, women, regardless of marital or parental status are found in the same proportions in the monopoly and competitive sectors. Although marriage and childbirth appear not to have any effects on the labor market segmentation of women, the labor markets are remarkably stable. Suggestions for future research and an assessment of labor market segmentation theory are given. / Master of Science

In materials evaluation applications requiring the interrogation of modified far field patterns of an ultrasonic transducer, it is desirable to use a transducer which produces a beam with a Gaussian profile. A transducer with a velocity profile which is Gaussian as a function of radius and independent of angle is described. The transducer has been constructed by depositing a circularly symmetric metallic multiple electrode array on a 12. 7 mm diameter x-cut quartz disk. Each electrode is independently connected to an impedance network optimized to produce the Gaussian distribution with less than two percent maximum error. A computer aided electrode design and normalized three dimensional ultrasonic measurements of the far field distribution are presented. / Master of Science

To determine the energy saving potential available from recirculating air in peanut drying, a thin layer drying simulation model was adapted to incorporate recirculation. A heat and mass balance computer model was developed to enable the determination of heat energy input. Laboratory crop dryers were designed and constructed to conduct experiments to verify the simulation models. Five batches of peanuts were dried using different recirculation strategies and the model successfully predicted the experimental results, including moisture content and wet and dry bulb temperatures. Energy savings of up to 20 percent were realized in the experimental runs. The simulation model was also used to evaluate and compare several recirculation strategies in order to determine successful strategies. / Master of Science

Successful architecture responds to user function on one level and its environment on another. A design for graduate student housing that operates on both levels is shown. The potential of curved building masses is explored. The structure for housing is the structure for parking, and the whole complex defines and separates vehicular and pedestrian circulation. Existing features of the site are employed and enhanced to create a tie between the old and new. The spaces are as important as the space makers. / Master of Architecture

The sublethal dosage effects of carbaryl were studied in honey bee (Apis mellifera L.) colonies. Carbaryl was fed to colonies during a 14-day period in a 0.95 M sucrose solution. Carbaryl dosages were based on 0.0036, 0.0178, and 0.0356 ug/bee/day, and concentrations approximated 0.09, 0.44, and 0.86 ppm, respectively. Five potential areas of sublethal effect were examined: brood production, brood mortality, adult mortality, colony weight change, and worker resistance to the toxicant. The carbaryl dosages appeared to fall within the sublethal range. No significant differences (P≤0.05) in adult mortality were found between Control and carbaryl treatments during or following carbaryl application. Statistically-significant increases in brood production and brood mortality were observed at the median dosage, but no significant differences were found at the highest dosage. The lowest dosage also caused no significant differences in brood production. A significant increase in worker resistance to carbaryl was observed at the median dosage, but a significant decrease occurred at the highest dosage and the Control. No significant differences in colony weight change were observed during the treatment or post-treatment periods at any dosage. Although statistically-significant differences were observed, they were not felt to be biologically significant. Intra-treatment colony variation was considered to be partly responsible for the differences observed. This variation is great enough to make honey bee colonies unsuitable for general insecticide screening, although they may be useful when prior evidence of sublethal effects exists / Master of Science

The natures of reason and architecture are things man has struggled with since the beginning. As reason evolves and gets more complex, human needs and values change. Interaction among ourselves and surroundings has become a need. Architecture balances this need creating a unifying spirit. This thesis is a collection of work resulting from a struggle that lead to an understanding and appreciation of architecture. / Master of Architecture

The thesis presents an analysis of FET based Multiple Valued Logic circuits. The circuit analysis program SPICE2 was used to analyze these circuits. A description of device modelling as done by SPICE2 is included in the beginning of the thesis. Techniques to implement MVL circuits using simple threshold circuits as building blocks are outlined. The two principal methods of achieving different switching voltages, namely, changing the device threshold and the device transconductance, for these threshold circuits are discussed. A comparative study of these two methods from a theoretical and practical viewpoint is included. Several MOSFET based MVL circuits are developed and an explanation of their operation is also given. / Master of Science

The broad architectural issue of whether a specific design form can facilitate the function of an educational institution was focused upon the question of how the addition of a media center might serve to unify and improve the School of Education at the University of Virginia. Specifically the two thesis issues are the addition in architecture and the media center as catalyst. Here the media center addition is intended to bring together isolated areas of the school and become both a physical and ideological center. / Master of Architecture