Digital Commons Network^™

A Monte Carlo Calculation Of Neutron Reflection From Various Curved Surfaces, Charles Jack Kalter

Doctoral Dissertations

"Plane parallel neutron beams normally incident upon the curved surface of a solid reflector are studied with the Monte Carlo method. The geometries studied are cylindrical, parabolic, and hemispherical. It is shown that when the curved surface is cylindrical, a small "focusing effect" occurs in the reflected neutron beam. Parabolic and hemispherical surfaces do not show "focusing". A study of the factors which determine the spatial dependence of the reflected flux shows that the probability of emergence of a neutron, traveling a fixed distance from a point inside the reflector, depends upon the curvature of the surface. It is only …

Forest Communities Of The Great Valley Of East Tennessee And Their Relationship To Soil And Topographic Properties, William Haywood Martin

Doctoral Dissertations

The complex physiographic and climatic history of the Great Valley of East Tennessee has resulted in development of diverse alternating ridge and valley land forms and soils which provide equally diverse forest habitats.

The objectives of this study were (1) to quantify certain topographic features, (2) to analyze statistical relationships of vegetation and tree taxa to selected soil properties and topographic features, (3) to assess magnitude and predictability of these relationships, (4) to document taxonomic diversity of tree taxa, (5) to document and delimit contemporary forest communities and describe interactions with soil-site properties, and (6) to consider relationships of these …

An Investigation Of Some Of The Environmental And Edaphic Factors Effecting The Detoxification And Subsequent Degradation Of An Herbicide, Butachlor, Douglas D. Baird

Doctoral Dissertations

The influence of specific edaphic environmental factors on the detoxication and subsequent degradation of N-Butoxymethyl-2-chloro-2', 6' diethylacetanilide (butachlor) was evaluated under greenhouse and growth chamber conditions. Detoxication of butachlor, as measured by bioassay with barnyardgrass, was significantly enhanced by increasing temperatures to 32 C, making the soil alkaline, flooding, introducing relatively high levels of organic matter and by allowing exposure of more than four weeks. Total degradation of butachlor to C0₂ was enhanced also by high temperatures and length of exposure but was inhibited to a certain extent by flooding. Soil produced metabolites, of which three were soluble in …

Time Lags In The Impact Of Public Investment In Water Resources: The Tennessee Valley Region, 1936-1968, Audley Eugene Hileman

Doctoral Dissertations

The purpose of this study was to investigate the time dimension of the impact of public investment in natural resources upon the economy of urban centered areas. The specific objectives were; (1) to evaluate the effectiveness of estimating distributed lag functions as a technique for studying the time lag associated with the economic impact of public investment in water resources; and (2) to estimate the distribution over time of the impact of investment in water resources upon the economy of urban centered areas by estimating a rational distributed lag function.

The procedure followed was to estimate parameters for a model …

Association And Heritability Studies Of Oil, Protein And Agronomic Characters In Two Soybean Hybrids, Raravi Parameswarappa

Doctoral Dissertations

The study involved two soybean (Glycine max L. Merrill) intervarietal hybrids—D54-2437 X D65-3054 and Hill x S-100. D54-2437 and S-100 are early flowering, indeterminate in growth habit and have gray pubescence color, while D65-3054 and Hill flower later, are determinate in growth habit and have tawny pubescence. The F₂ generation of the cross D54-2437 x D65-3054 was studied both in 1969 and 1970, while the cross Hill X S-100 was grown only in 1970. The parents and the F₁ hybrids were also included with the F₂ populations in 1970. The F₃ progenies of the cross D54-2437 …

Pricing Efficiency, Physical Characteristics, And Wholesale Values Of Slaughter Hogs, Warren Carl Couvillion

Doctoral Dissertations

The objectives of this study were: (1) to estimate the cutout characteristics of U.S.D.A. Grades 1, 2, and 3 hogs at different weight intervals; (2) to determine the gross margin differentials^ among these animals and to identify variables affecting this margin; (3) to use cutout characteristics established in Objective I to calcu-late GMD's for a different sample of animals, taking into account differences that may be attributable to both season and procurement method; and (4) to determine relationships that may exist between physical characteristics and wholesale values per hundredweight of hot carcasses under different situations of wholesale cut prices. The …

Management Of Insurable Risk By East Tennessee Tobacco Farmers, Bennie Eldred Beeson

Doctoral Dissertations

General purposes of this study were to evaluate quan-titatively the insurance management strategies of East Tennessee tobacco farmers and to determine the role of Fed-eral Crop Insurance Corporation (FCIC) crop insurance in those strategies. Estimates of values at risk, financial reserves, insurance coverages, and insurance expenditures were obtained for 80 randomly selected farmers having FCIC tobacco insurance (FCI sample) and 80 randomly selected farmers not having that insurance (NFI sample). Data were obtained by personal interview in six randomly selected East Tennessee counties between June 1 and July 26, 1969. Quantitative indexes of insurance management effective-ness were designed to measure …

The Costs Associated With Milk Packaging, Delivery, And Container Disposal For Four Container Types And The Policy Implications For The Knoxville, Tennessee, Area, Gerald E. Smolen

Doctoral Dissertations

The overall objective of this study was to estimate the direct and Indirect costs associated with alternative fluid milk packaging systems In the Knoxville, Tennessee, Metropolitan area and the Implications to solid waste management. Also considered were the possible effects on economic efficiency by legislated policy that would elicit changes In milk packaging systems currently used.

The general procedure Involved the application of an economic engineering or synthetic cost analysis. Economic-engineering models were built for a small and a large milk packaging operation In the Knoxville area. Models were synthesized for paper, glass, disposable plastic, and returnable plastic fluid milk …

An Economic Analysis Of Crops And Land Use Localizations In The Tungabhadra Irrigaiton Project Of Mysore State, Inda, Parker Ditmore Cashdollar

Doctoral Dissertations

A system of Improved land use localizations for controlling the use of irrigation water is proposed for the Tungabhadra Irrigation Project (TBP) in Mysore State, India. Land use localizations determine which crops, to what extent, and in what season they can be grown. Lands are localized for "light" irrigated crops or for "heavy" irrigated paddy. To insure high levels of total production from a limited water supply, the great majority of land was initially localized for "light" irrigated crops. Localization regulations, however, are not being strictly enforced. This has resulted in farmers' growing more paddy, which appears to be the …

Effects Of Seed Moisture Content, Gamma Rays, And Unmoderated Fission Neutrons On Various Biological End-Points In Barley, Hordeum Vulgare L. Emend Lam, Gurubasvappa Shivashankar

Doctoral Dissertations

Seeds of the barley variety, Atlas 57, whose moisture content was equilibrated to 5.6, 7.4, 11.8 and 15.6 percent, were irradiated with gamma rays at 12, 24, 36, 48 and 60 kR and with fission neutrons at 190, 380, 570, 765 and 960 rads tissue equivalent in air. Seedling height, survival frequency, meiotic chromosome aberrations and seed fertility in the M₁ generation and the frequency of chlorophyll and viable mutations in the M₂ generation were studied. Varying the moisture content of the seeds modified the radiosensitivity following fission neutron as well as gamma irradiation, but in different ways. …

A Study Of Crossbreeding And Inter Se Mating Of Bos Taurus And Bos Indicus Cattle, David C. Meyerhoeffer

Doctoral Dissertations

Records accumulated from Brahman, Angus, Africander and their crosses during the period 1934 through 1962 at the Iberia Livestock Experiment Station, Jeanerette, Louisiana, were studied to estimate heterosis, compare birth weights, weaning weights and weaning type scores of straightbred and crossbred calves and to estimate retained heterosis in inter se matings of initial crosses.

Significant differences (P < .01) were found between calves of Angus dams and Brangus and Brahman dams in birth weight (65.5 vs. 61.1 lbs) and weaning weight (417 vs. 449 lbs.) but not in weaning type (11.10 vs. 10.89). Also, calves of Brangus dams were significantly different (P < .01) from Brahman dams in birth weight (64.9 vs. 57.3), but no differences were found in weaning weight (458 vs. 440) or type at weaning (10.88 vs. 10.90) of calves from these two kinds of dams.

Angus-sired calves were significantly (P < .01) different in birth weight (60,6 vs, 63,8) and weaning type (11.70 vs, 10.59) from Brangus and Brahman-sired calves. They were lower in birth weight (61 vs. 64 pounds) than Brangus-sired calves and higher (61 vs. 58 pounds) than Brahman-sired calves. No significant difference was found among these three kinds of sires with respect to weaning weight of their calves.

There were no apparent differences between the birth weights of the straightbred calves and those of crossbred calves; however, the crossbreds were significantly (P < .01) heavier at weaning (453 vs. 409 pounds). The crosses graded lower (P < .05) than the straightbreds, although the average difference was small (10.91 vs. 11.04 where 1 equals 1/3 of a grade).

Heterosis was significantly (P < .01) greater in the first cross Angus X Brahman (including the reciprocal) than in the first cross Angus X Brangus (including the reciprocal) for both birth weight and weaning weight. It should be noted that calves out of Brahman cows and sired by Angus bulls were lighter at birth by 14 pounds but heavier by 8 pounds at weaning than calves from the reciprocal of this mating. The same effect was evident in the Angus-sired calves from Brangus cows.

Inter se mated Brangus progeny averaged 64 pounds in birth …

Relationship Between Metamorphism And Geologic Structure Along The Great Smoky Fault System, Parksville Quadrangle, Polk And Bradley Counties, Tennessee, Thomas Culver Sutton

Doctoral Dissertations

The Parksville quadrangle is structurally located at a salient in the Blue Ridge front. The Great Smoky fault divides the quadrangle such that the southeastern one-third consists of Blue Ridge rocks and northwestern two-thirds of Valley and Ridge rocks.

The Blue Ridge consists of Precambrian Ocoee and Lower Cambrian Chilhowee rocks. The Ocoee Series is represented by both the Wilhite and Sandsuck formations, although previous maps had not indicated the presence of any Wilhite rocks. A mappable unit of Wilhite containing paragonite has served to divide the Formation into an Upper and a Lower Member. All of the fine-grained Wilhite …

An Explanation For The Apparent Effect Of Cod Liver Oil On Sulfur Metabolism In The Albino Rat, Jayne Tigert Morris

Doctoral Dissertations

An interaction between inorganic sulfur and cod liver oil (CLO) has been proposed in the normal metabolism of the albino rat after a gross malformation of the hind limbs was observed in rats fed a diet low in sulfate and without CLO. The rats were fed these diets from the time they were two weeks of age through the seventh week of life. Toward the end of this period, the fourth week after weaning, the lesion was observed. The study included four basic variations of a diet low in sulfate: with and without CLO and with and without vitamin E. …

An Examination Of The Differences And Similarities Of Pragmatism And Confucianism Thought As They Relate To Educational Administration Theory And Practice, Paul Y. H. Chao

Doctoral Dissertations

Purpose: The purpose of the present study is to identify and examine the differences and similarities between the educational thoughts of the two philosophers, Confucious and Dewey, and to determine if reciprocal relations may exist between them. Also to discuss the most outstanding contributions of Pragmatism and Confucianism as they might be related to modern educational administration.

Effects Of Size-Controlling Apple Rootstocks On Certain Fruit Characteristics Of Two Apple Varieties, Charles Allen Mullins

Doctoral Dissertations

The objective of this study was to determine the effects of size-controlling apple rootstocks on fruit characteristics of two apple cultivars. Rootstocks selected were EM VII, MM 106, EM II5 MM 104, MM 111 and MM 109. Cultivars grown on these rootstocks were Red Delicious and Golden Delicious.

Factors studied were firmness, soluble solids, weight, pH, titratable acidity and reducing sugars. These factors were determined for fruits at harvest, and after six and twelve weeks storage at 34°F.

Fruits from trees on MM 109 rootstock were generally more firm than fruits from trees on the other rootstocks at harvest. This …

Induction Of Adventitious Buds On Chrysanthemum Morifolium Amd Pyrus Malus And Their Response To Some Mutagenic Chemicals, Byoung Moon Choo

Doctoral Dissertations

The use of mutagenic chemicals applied to induced adventitious buds as means of increasing mutation rates in horticultural crops was tried. Large numbers of adventitious buds were encouraged by application of 6-furfurylamino purine plus indole-3-acetic acid on the Chrysanthemum morifolium cv. "Mandalay" and Pyrus Malus cv. "Triple Red Delicious." Some adventitious buds appeared on Pyrus Malus treated with kinetin plus lAA were apparently in response to extended life span rather than to chemical stimulation. With Chrysanthemum morifolium cv. "Mandalay," how-ever, the treatment of the combination of these chemicals increased the number of adventitious buds formed. Adventitious buds seemed to originate …

Genetic Analysis Of Resistance Of Corn (Zea Mays L.) Inbreds And Hybrids To The Maize Dwarf Mosaic Virus Disease, Balasundara Naidu

Doctoral Dissertations

The purpose of this study was to determine the types of gene action which are important in the inheritance of resistance to maize dwarf mosaic virus (MDMV) in corn (Zea mays L.) inbreds and hybrids. Two experiments were conducted; one on diallel crosses, and the other on generation means involving one cross. A set of 45 F₁ crosses derived by diallel mating among five resistant inbreds (Tx601, Ga209, Mo18W, T232, and Ky226) and five susceptible inbreds (CI872, T218, T105, Ky27, and T13) together with the inbreds, formed the populations for the diallel experiment. The parents, F₁, F …

Estimation Of Corn Yield Response To Selected Weather Variables In West Tennessee, Garey Banks Perkins

Doctoral Dissertations

This study analyzed the effects of varying soil moisture conditions on per acre corn yields for selected counties in West Tennessee. The basic assumption underlying the study was that abnormal moisture conditions during the growing season adversely affected corn yield. It was hypothesized that too much as well as too little available soil moisture contributed to reductions in per acre corn yields.

To test the hypothesis, a 14 county area of West Tennessee was selected as a study area. These counties were selected because they produced a substantial portion of the total corn crop grown in Tennessee.

The objectives of …

The Effect Of Ca And P Levels In Laying Diets On The Bone Density Index, Bone Breaking Strength, Egg Specific Gravity, Egg Production, And The Incidence Of Cage Layer Fatigue, Ram Dhari Singh

Doctoral Dissertations

A total of four trials involving 990 S. C. White Leghorn-type pullets were conducted to study the response of caged layers to various Ca and P levels as measured by bone density index, bone breaking strength, egg production, and egg specific gravity. An X-ray type bone densitometer was used to determine bone density index and an Allo-Kramer shear press to determine the breaking strength of tibia.

Whenever layers were fed a diet containing 1.5 percent Ca, they maintained about 50 percent egg production. Specific gravity score of their eggs and the bone density of tibia were found significantly lower than …

An Experimental Study Of The Effects Of A Program Of Oral Reading Of Children's Literature About Negroes On The Self-Concept Of Negro Fourth Grade Children, Elaine Hoffman Wagener

Doctoral Dissertations

The self-concepts of Negro fourth grade students in an elementary school in Austin, Texas were studied to ascer-tain the effect of 36 sessions, 30 minutes each, of oral reading of literature containing Negro characters, both historical and fictional. The Piers-Harris Self Concept Test, an inventory requiring responses of yes or no to 80 statements about one's self; the Children's Self-Social Constructs Test, a non-verbal measure of self-social items of horizontal esteem, vertical esteem, complexity, individuation, and identification with mother, father, teacher, friends; and self-drawings in color by the students were used. A pretest and posttest were administered. An experimental group …

The Effects Of A Tutorial-Friend Relationship On Elementary School Isolates., Thomas Frederick Holcomb

Doctoral Dissertations

The purpose of this study was to investigate empirically some of the possible effects that female students in the college of education-- who were involved in a field experience for Educational Psychology 2430, Child Study-- had on third and fourth grade male and female isolates. Fifty-two isolates were matched on sex and sociometric status-- thirteen matched male pairs and thirteen matched female pairs. The treatment for the experiinental subjects consisted of being involved in a one-to-one tutorial-friend relationship with a college female for one hour a week for seven weeks. This interaction consisted of the college student tutoring the isolate …

Magnesium Interrelationships In Monogastric And Ruminant Animals, T. Seenappa

Doctoral Dissertations

Seventy-two albino rats, 5 sheep and 51 bovine blood samples were utilized in this study to investigate the relationship of dietary magnesium, potassium and nitrogen on hypomagnesemia. The rats were allotted to 12 synthetic diets composed of 9, 18 and 36% casein; 0.0, 0.6 and 1.3 g/kg ration of magnesium; and 0.0, 4.0 and 8.0 g/kg potassium ration reduced magnesium levels in plasma and tissues. An interaction between dietary potassium and magnesium appeared to be present. Four wethers were fed magnesium chloride, oxide, sulfate and nitrate to study the possibility of an interaction of these compounds with body minerals. Administration …

The Application Of Porter And Lawler's Attitude-Performance Model To A Population Of Disadvantaged Trainees, Richard Dorr Scott

Doctoral Dissertations

The purpose of this study was to test a modified version of Porter and Lawler's attitude-performance model with a population of disadvantaged trainees. Seven hypotheses were derived from the following formulation: If a trainee sees high performance as leading to the attainment of one or more personal rewards in the training situation, he will tend to exert high effort in the program. The trainee will have correspondingly high performance in this situation providing he has the relevant ability and appropriate role perceptions.

To test these hypotheses data were obtained from 97 disadvantaged trainees and their eight supervisors at a manpower …

Economic Alternatives And Policy Implications Of A Strategic Commodity Reserve For National Security Considerations, Clark David Garland

Doctoral Dissertations

The maintenance of adequate food reserves for national security considerations is a relevant policy goal for society. Food supplies are a major link in our national security. However, the United States has never established a strategic commodity reserve program. The food stocks held by the Commodity Credit Corporation are primarily by-products of price stabilization policies, rather than results of a carefully-defined emergency food program. The basic postattack food problem is one of reducing the trans-portation problems or relocating the food supply to insure adequate emergency supplies of food. The storage of wheat in areas with relatively low food supplies represents …

The Relationship Of Body Length To Economically Important Swine Production And Carcass Traits, Frank David Kirkpatrick

Doctoral Dissertations

A total of 1,062 purebred Duroc pigs of 168 litters by 14 sires provided data from five farrowing seasons at Ames Plantation (November, 1968, through November, 1969). Analyses were conducted to determine the phenotypic and genetic relationships of body length and various productivity and carcass traits and to estimate heritability of body length in order to assess the possible effectiveness of including this trait in a selection program,

Phenotypic correlations among individual traits indicate that heavier weaning pigs reach 200 pounds at an earlier age, are longer and have less backfat and higher muscle scores than lighter weaning pigs. Body …

The Role Of The Ultimobranchial Glands In Calcium Metabolism Of The Laying Hen, Abdul Karim Gaidan Al-Khazraji

Doctoral Dissertations

An experiment was conducted in two trials involving 113 Single Comb White Leghorn pullets to study the effect of ultimo-branchialectomy and confinement on calcium metabolism of the laying hens. Ultimobranchialectomy and sham operations were performed on chicks at one week of age. They were then reared to maturity in floor pens and housed through the laying period in 6 x 8 and 10 x 16 inch cages and in floor pens. In trial 1, ultimobranchialectomy combined with stress of confinement resulted in a significant reduction in bone density. In addition, it also resulted in significant increases in weights of the …

A Comparison Of Different Sampling Intervals And Computational Methods For Estimating Lactation Yields, Amai Vishwanatha Rai

Doctoral Dissertations

A sample of 471 lactation records from four dairy herds of The University of Tennessee were utilized in this study. The experiment was designed to investigate the possibilities of lengthening the DHIA testing interval. The study was limited to 305-day milk yields. Three sampling intervals: (1) 30 days, (2) 60 days and (3) 90 days and three computing methods: (1) unadjusted, (2) first-test-adjusted and (3) first-and-last- test-adjusted were used to estimate the lactation milk yields. Each lactation record provided 30 monthly, 60 bi-monthly and 90 tri-monthly unadjusted estimates. In all, 254,340 lactation estimates (adjusted and unadjusted) were computed.

The deviation …

Developing And Restructuring Regulated Markets In Mysore State, India: An Alternative For Improving The Efficiency Of Marketing Food Grains, A. N. K. Murthy

Doctoral Dissertations

The purpose of the study was to analyze how the regulated markets in Mysore State might be developed and restructured as one alternative to improve the efficiency of marketing food grains. Only secondary data was used for the study. Most of the data were derived from the publications of the State Marketing Department, Department of Agriculture, Bureau of Economics and Statistics and the University of Agricultural Sciences in Mysore State.

The study consisted of five objectives all interrelated with one another. The first objective was to identify the major defects in the existing regulated markets relating to their structure, methods …

Air Pollution And Property Values In Urban Areas, Kenneth Wayne Paxton

Doctoral Dissertations

The problem of air pollution is a worldwide phenomenon. One manifestation of the problem is the existence of air pollution regulations. The general objective of this study was to provide information useful in establishing air quality standards as well as adding to the body of knowledge about the economics of air pollution. To accomplish this objective, the hypothesis that the level of air pollution and property values were negatively related was tested.

In order to do this, it was necessary to accomplish two specific objectives. The first was to determine the association between levels of air pollution and property values. …

Costs And Returns From Golf Course Operations In Tennessee And Socioeconomic Factors Affecting Participation Rates In Golf, Julian Elery Holmes

Doctoral Dissertations

This study was designed to achieve the following objectives: (1) to determine the costs and returns associated with urban and rural golfing facilities in Tennessee; and (2) to identify and evaluate socioeconomic factors affecting participation in golf on urban and rural courses in Tennessee.

Data on costs and returns were obtained on nine 18 hole and four 9 hole urban golf courses located in the major metropolitan areas of Tennessee and on 10 nine hole rural golf courses located in rural communities with a population of 5,500 or less. Data on participation rates and socioeconomic factors were obtained from 1,796 …