Master of Science

This thesis attempts to show that Robert Louis Stevenson's romantic novels experiment in combining romance and realism. To achieve his objective, Stevenson sometimes imitates earlier writers of romance, sometimes differs from them. He imitates traditional romance by including the motifs of love, adventure, combat, and quest. He juxtaposes good and evil and makes good defeat evil. He deviates from traditional romance, however, by creating villains not altogether evil, such as Long John Silver in Treasure Island. He also deviates from traditional romance by creating incidents where evil overwhelms and drags the good down into moral degradation, as in the encounters between the Durie brothers in The Master of Ballantrae or between Frank and Archie in Weir of Hermiston. Stevenson also includes in his romantic novels some elements of realism--the use of common people, the modeling of characters after known personalities, and the association of fictional events with history. He uses a truly romantic character such as the Prince in Prince Otto to make a moral point about the place of aptitude and interest in assigning roles to people. He also uses romantic adventures to teach moral lessons, as in The Dynamiter. Stevenson establishes that romance functions not only to delight but also to teach; it is not to encourage escape but to serve a pragmatic purpose. / Master of Arts

From a review of the many and varied attempts to date to design a successful cardiac prosthesis, it was shown that 1) every attempt to design a ventricular actuating mechanism (the crucial element in a cardiac prosthesis) has failed to satisfy one or more of the design requirements and has thus resulted in a maximum survival time for an animal on a cardiac prosthesis of 247 hours and, 2) by combining the operating principles of two previously developed actuating mechanisms (spring-driven and rotating shaft-driven), a successful design could be the possible result. A description of the design and construction of a prototype of such a hybrid configuration was next presented. The mechanism presented in the study was then briefly evaluated with respect to its ability to 1) self-regulate its pump output and, 2) produce a physiological aortic pressure/time waveform. Results of the study demonstrated that the pump was capable of producing a quasi-physiological pressure/time waveform. Self regulatory ability was proven to be ineffective. / Master of Science

Fluorescent granular pigment sprayed with 738 g/cm² (105 p.s.i .) for 5, 10, 20 second intervals was used to mark crayfish in a laboratory study. The pigment was retained by 100% of the unmolted crayfish 35 days after treatment and by 65% of the crayfish 56 days after treatment. Crayfish which were induced to molt after being sprayed generally lost the fluorescent pigment during the molt. Mortality, (2%), due to the marking procedures was minimal. / Master of Science

The impact of metropolitan dominance on the diffusion of family planning in the Philippines was analyzed. Hypotheses based on the diminishing effect urban centers have on knowledge approval and practice of family planning as distance from the metropolitan core increases, size of the local urban center decreases and level of individual cosmopolitanism increases were tested by means of bivariate correlations. In addition the predictive value of these variables was assessed by chi-square and gamma coefficients. The findings indicate, 1) a decreasing linear relationship between metropolitan dominance and the diffusion of family planning variables; 2) a curvilinear relationship between size of local urban center and the diffusion of family planning; 3) a decreasing linear relationship between level of individual cosmopolitanism and the diffusion of family planning. Furthermore, the findings indicate that the distance from the metropolitan core effect is vitiated when the size of the local urban center exceeds the 20,000. However, the distance from the metropolitan core effect is not conditioned by the level of individual cosmopolitanism. / Master of Science

Thirteen cycling, nonlactating dairy cows were hormonally treated to induce lactation. Starting 7 days after estrus and continuing for 7 days progesterone and estradiol-17β dissolved in absolute ethanol were administered twice daily. Daily dose level for progesterone and estradiol- 178 was .25 mg and .01 mg/kg body weight, respectively. Intramuscular injections of dexamethasone (.028 mg/kg body weight) were given on days 18, 19 and 20 after initial treatment. Mammary tissue biopsies were taken from 9 cows on days 18, 21 and 23 after initiation of treatment (3 cows each day). Histological analysis was performed (> 30,000 contacts) to determine the average percent tissue area composed of epithelium, stroma, lumen, adipose and duct. Difference in percent area between days 18 thru 23 was as follows: (1) epithelium +11.1%, (2) stroma -25.9%, (3) lumen +13.9%, (4) adipose +1.58 and (5) duct -.74%. Also, an increase of 15 nuclei/alveoli occurred between days 18 thru 23. On day 18 small lipid droplet epithelia predominated but was replaced with mixed lipid droplet epithelia by day 23. Day 18 epithelia had elongated dark staining nuclei. Epithelia on day 23 had spherically shaped nuclei containing several nucleoli and a decreased nuclear/cytoplasmic ratio when compared to day 18 epithelia. Four of the hormonally treated cows were allowed to lactate. Production from these four cows ranged from 33 to 74% of the previous lactation. Production and histological development were variable in cows treated with estrogen, progesterone and dexamethasone. / Master of Science

This thesis is concerned with the use of memory function devices in place of binary storage devices in sequential machines. In particular, various counters are considered as memory elements. Design limitations and design procedures for each type of counter are determined, with emphasis placed on UP/DN/PRESET type counters. It is shown that a presettable counter is capable of realizing any sequential machine. Special considerations involved in state assignment and minimization in designs using counters are investigated. Finally, extensions and areas of possible further study are discussed. / Master of Science

Twenty-four female fawns, weaned at 3.5 months of age, were divided into three groups and randomly assigned to one of four treatments with that group. High energy-high protein (HEHP), high energy-low protein (HELP), low energy-high protein (LEHP), and low energy-low protein (LELP) diets were the treatments used in 2x2 factorial design. High energy diets contained an average of 3064 kcal/kg digestible energy while low energy diets contained an average of 2507 kcal/kg digestible energy. Crude protein levels for high and low protein diets averaged 18.19 and 9.60 percent respectively. Eighteen fawns were included in the final analyses. Five fawns died of various causes during the course of the experiment while one fawn begun late on experiment was not included in any analysis. Fawns tended to reduce food consumption while weight gains decreased slowly during the course of the experiment. High energy diets caused a significant (p<0.05) increase in progestin concentrations over low energy diets. Progestin concentrations were significantly (p<0.05) higher during January (especially the first ⅓ of January) than any other month examined. Nine of 11 high energy animals and 0 of 8 low energy animals had progestin levels of at least 1.00 ng/ml during the experimental period. This was interpreted as indicating a higher incidence of ovulation and puberty in high energy animals. Protein level had no apparent effect on incidence of ovulation and puberty. Estrogen analysis was unsuccessful because of extremely low levels of estradiol in these fawns’ plasma. / Master of Science

This thesis focuses on the economic design of process control procedures for attributes sampling. The process is modeled as a continuous time, discrete space stochastic process which possesses the Markov property, and hence a Markov chain is used to describe its behavior. Two models are developed. The first model has fixed values of the decision variables and is optimized using the pattern search procedure. The second model is a dynamic formulation. The optimal decision policies developed using this model vary with the expected state of the process. Several cost components are considered in the mathematical development of each model. They are: the cost of sampling, the cost of process adjustment, and the cost of producing a defective unit. The cost of a false indication of the process state is also included in the fixed parameter model. Computer programs, written in Fortran IV are developed and used to find the optimal system designs. Example problems are presented to illustrate both of the models. The dynamic programming model is shown to offer considerable economic improvement over the steady state model in all of the examples. / Master of Science

A series of experiments were designed to test the effects of ¹³⁷cs irradiation on the viability of mouse embryos irradiated in vitro and subsequently transferred to recipient females or cultured in vitro. The first experiment was designed to evaluate the viability of embryos after combinations of whole body irradiation to the recipient (0, 100 and 200 R) and in vitro irradiation to the embryo (0, 100 and 200 R). Nine treatment combinations were possible. Controls, in which neither recipient or embryo were irradiated, resulted in 41.3% viable fetuses 14 days after irradiation and transfer. Controls were significantly different from all other treatments (P < 0.01). Embryo irradiation at 200 R resulted in 8.8, 4.8 and 12.1% viable fetuses when the recipients received 0, 100 and 200 R, respectively. Embryo irradiation at 100 R resulted in 15.6, 21.4 and 17.7% viable fetuses when the recipient received 0, 100 and 200 R. Irradiation of the recipient at 100 and 200 R, while the embryo was unirradiated, resulted in 18.4 and 25.3% viable fetuses. Irradiation of the embryo had a significant effect (P < 0.05) on the percentage of the fetuses alive 14 days after transfer. Irradiation of the recipient and the dam embryo interaction were not significant in terms of inducing embryonic mortality. There was no significant difference in resorption percentage between the nine treatments. The second experiment was designed to measure the day of death of embryos placed into each of three treatments. The treatments consisted of controls, recipients receiving 200 R and embryos 0 R, and recipients receiving 0 R and embryos 200 R. Recipients were autopsied on days 4 through 10 following transfer. There was no significant difference between treatments, or on days of autopsy between or within treatments. The two treatments involving irradiation were combined and the days of autopsy grouped into 4 and 5, 6 and 7 and 8, 9 and 10 and compared with controls. Viability and resorptions were significantly different (P < 0.05) on days 8, 9 and 10 in the irradiated embryos when compared with controls. The third experiment was designed to measure the response of mouse blastocysts irradiated at 0, 100 and 200 Rand cultured in vitro. Irradiation at 100 and 200 R significantly increased degeneration of embryos (P 0.01) and decreased hatching ability (P < 0.01). Embryos were examined using the differential interference contrast microscope at 24, 48 and 72 hours after receiving 0, 100 or 200 R. No consistent morphological changes due to irradiation were observed. / Master of Science