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Numerical Techniques For Classifying Forest Communities In The Tennessee Valley, Dennis Michael Mccarthy

Doctoral Dissertations

The main objectives of this study were:

1. To develop a series of vegetational classification systems based on the floristics of community strata, overstory structural functional features, and environmental parameter of a region typical of the temperate Tennessee Valley;

2. To examine the suitability of these classification systems for the complex forests of the Tennessee Valley;

3. To develop numerical tools for evaluating classification suitability;

4. To use these tools to seek out natural discontinuities in vegetational patterns.

To achieve these goals six multivariate cluster analysis programs were examined. Preliminary tests brought out undesirable properties in four of them, however, …

Development Of A Mathematical Model That Will Predict The Mean Daily Dietary Intake Of Pregnant Women Based Upon Sociological, Psychological And Physiological Factors Assumed To Be Related To The Mean Daily Dietary Iron Intake, Waneen Ann Liudahl

Doctoral Dissertations

The purpose of this investigation was to develop a mathematical model using linear stepwise regression analysis that would predict the dietary iron intake of pregnant women. Development of the mathematical model was based upon sociological, psychological and physiological factors assumed to be related to the dietary iron intake of pregnant women.

Fifty-seven pregnant women participated in the study. They were private outpatients of two obstetricians at the Macomb Clinic, Macomb, Illinois.

The dependent variable used in the development of the models was the seven-day mean daily dietary iron intake for each pregnant woman which was obtained during the second and/or …

Energy Utilization Characteristics Of Selected Electrical Commercial Food Service Equipment, Frank Romanelli

Doctoral Dissertations

Energy utilization characteristics for commercial food service equipment were determined to provide data to establish the cost of energy in the preparation of food products. Twenty pounds of frozen pre-cooked breaded chicken quarters were cooked to an end point temperature of 180°F using a deep fryer, a braiser, a two-pan bake oven, and a convection oven.

Kilowatt-hour readings were made to measure energy consumption of each piece of equipment. An alternate technique was developed to estimate energy consumption of each piece of equipment by using energy ratings in combination with measuring the on-time of the thermostat signal light. The energy …

Food And Nutrition Misconceptions, Knowledge, Related Interests, And Information Sources Of Knoxville, Tennessee, High School Students, Lois Ann Wodarski

Doctoral Dissertations

Food and nutrition misconceptions, food and nutrition-related interests, and information sources of 185, tenth through twelfth grade students from a selected sample of Knoxville, Tennessee, high schools were studied. Relevant information was obtained through the development and administration of a questionnaire designed to distinguish between level of food and nutrition knowledge and degree of subscription to misconceptions, to determine which topics within the realm of food and nutrition were of interest to the teenage population, and to ascertain sources of information for the various categories of food and nutrition knowledge.

Students of both sexes and of all grade levels were …

Intrerconversion Of Replicative Forms Of Sindbis Virus Rna And The Electrophoresis Of Viral Rna, Jonathan D. Martin

Doctoral Dissertations

Three species of double-strand (ds) RNA, designated RF I, RF II, and RF III in order of decreasing size, were produced by RNase treatment of extracts of chicken embryo cells infected for 6 h with Sindbis virus. These species were identifiable with those reported by Simmons and Strauss (28). At a low level of enzyme (0.001 µg/ml) the major species obtained was RF I. When the enzyme concentration was increased 10-, 100, and 1000-fold, there was a progressive increase in the proportions of RF's II and III and a concurrent decrease in the proportion of RF I. Only RF I …

A Biosystematic Study Of C̲Ḻe̲M̲A̲Ṯi̲S̲ Section V̲I̲O̲Ṟṉa̲ Subsection V̲I̲O̲Ṟṉa̲E̲, William Michael Dennis

Doctoral Dissertations

A biosystematic study was conducted on Clematis subsection Viornae. Morphological, cytological, biochemical, ecological and distributional data were collected from herbarium, field and laboratory investigations. Three ordinations (Principle Components Analysis, Principle Coordinates Analysis and Non-metric Multidimensional Scaling Analysis) and a cladistic analysis (following procedures outlined by Nelson and Van Horn) were used to order taxa into phenetic and phylogenetic classifications. From these studies eight taxa are recognized: f. addisonii, f· glaucophylla, f· pitcheri var. pitcheri, f. pitcheri var. dictyota, C. reticulata, C. texensis, f· versicolor and C. viorna. Scanning electron microscopy (SEM) of pollen showed no interspecific differences. SEM was useful …

Evaluation Of Mass Selection For Yield In Corn As Measured By Random Sb1 Slines And Their Test Crosses, Syrus Abd-Mishani

Doctoral Dissertations

A mass selected com population (MS 13), and the parent variety Jellicorse (Je) were evaluated at Knoxville and Crossville using random S₁ lines per se and S₀ lines topcrossed to an unrelated single cross. The selected population (MS 13) had undergone thirteen generations of mass selection for ear com yield. S₁ lines and their testcrosses of MS 13 did not demonstrate statistically significant average yielding superiority over lines of Je at either Knoxville or Crossville, or the two locations combined. Both S₁ and testcross progenies of MS 13 were greater in yield than Je at Crossville …

Aluminum Toxicity In Two Snapbean Varieties, Gonasageran Naido

Doctoral Dissertations

The mechanism of A1 tolerance in plants was investigated in a series of greenhouse experiments which compared two varieties of snapbeans (Phaseolus vulgaris L.) that were differentially tolerant to A1. The more tolerant 'Dade' variety was compared to 'Romano' with respect to growth, mineral nutrition, pH, total acidity, A1 fixation by root macerates, organic acid content, morphological effects of Al, and to location of A1 and P in roots. To compare the two varieties with respect to growth and mineral nutrition, seedlings were grown in one-fifth strength Hoagland's nutrient solution (pH 4.8) at 0, 4, 8 and 12 ppm added …

Evaluation Of Techniques Used In Estimating Phenotypic, Genetic And Environmental Trends In Beef Cattle, A. Hayden Brown Jr.

Doctoral Dissertations

Data collected between 1957 and 1975 in the University of Tennessee, Ames Plantation Angus herd was used to compare two methods of adjusting weaning weight for known sources of fixed environmental variation and four methods of estimating phenotypic, genetic and environmental trends. The method of adjusting age-constant (calculated 205-day weight) weaning weights using the coefficient of regression of weaning age on calculated 205-day weight, reported by Robertson (1974), was superior to standard procedures for calculating 205-day weight and in removing the effects of sex and age at weaning. The use of sex of calf and age of dam adjustment factors …

Delivery Of Community Mental Health Services Through A 5-Session Group Therapy Module, Annie Lee Jones

Doctoral Dissertations

The purpose of this study was to explore one possible way to facilitate change in low-income groups through the use of a time-limited group therapy program. It was hoped that through the documentation of change with each case in the study it would be shown that change was possible for low-income persons utilizing psychotherapy, especially with realistic assessment of problems and the setting of realistic goals by the client and therapist.

The assessment data was obtained for each case through these instruments: A. Problems Checklist; B. Personal Data Sheet; C. The Zung Self-Rating Depression Scale; D. The Levenson Internal-External Scale; …

Cades Cove During The Nineteenth Century, Durwood Clay Dunn

Doctoral Dissertations

Although the Southern mountaineer has emerged as a distinctive figure in the fiction of local colorists since the 1880's, few actual historical investigations of specific locales in the region have been undertaken to examine the confusing plethora of stereotypes and hypotheses surrounding the Appalachian South. Using family records, oral history, and manuscript census returns, the present study of Cades Cove, a small mountain community in East Tennessee, attempts to remedy this situation by carefully analyzing the nature and degree of change within the community, and the extent to which cultural continuity existed throughout the nineteenth century.

Enormous economic and social …

Tenderness And Structural Changes In Beef Semitendinosus Muscles Heated At Two Rates To Four End Point Temperatures, Leanne Ellen Hearne

Doctoral Dissertations

Progressive changes in tenderness of meat cores and in structure of muscle fibers from beef semitendinosus cores heated in test tubes in a water bath to simulate oven roasting of top round roasts at 93 and 149°C to end point temperatures of 40, 50, 60, and 70°C were evaluated. Slower heating and higher end point temperatures resulted in greater cooking losses. Warner-Bratzler shear value of cores and diameter of muscle fibers decreased from 40 to 50 to 60°C and sarcomere length of muscle fibers decreased from 60 to 70°C. Cores heated to 40 and 50°C at both rates exhibited considerable …

The Assessment Of The Feasibility For Using The Evaluation Component Of A Model For Implementing And Evaluating A Competency-Based Dietetic Program, Carol Williams Shanklin

Doctoral Dissertations

A conceptual model for implementing and evaluating a competency-based dietetic program was developed for use with the Coordinated Undergraduate Program in Dietetics at the University of Tennessee, Knoxville. The feasibility for using the evaluation component of the model was assessed for five priority competencies identified as essential for an entry-level generalist dietitian in the areas of quantity food procurement, production, and service.

Sub-competencies and performance indicators were identified for each of the competencies. Didactic and clinical courses in food systems administration were reviewed to ascertain which quarter each competency was introduced and the desired level of performance at designated points …

Effects Of 2-Chloroethyl-Phosphonic Acid (Ethephon) As A Male Gametocide For Induction Of Sterility In Wheat And Barley, Jacqueline Taylor Martin

Doctoral Dissertations

Exploitation of induced male sterility has now become a potential tool in plant breeding. Ethephon (2-chloroethyl-phosphonic acid) has induced male sterility in winter cultivars of wheat and barley.

The purpose of this research was to further elucidate the response of winter wheat (Triticum aestivum L. em Thell), and winter barley (Hordeum vulgate L.) to foliar application of ethephon.

Ethephon was foliarly sprayed on winter cultivars of wheat and barley which were Arthur and Blueboy, and Barsoy and Volbar respectively, at 0.05, 0.10, and 0.20 and 0.40 percent active ingredient, when plants were in mid-boot and late boot stages in the …

Lumped Parameter, State Variable Dynamic Models For U-Tube Recirculation Type Nuclear Steam Generators, Mohamed Rabie Ahmed Ali

Doctoral Dissertations

A number of lumped parameter dynamic models were developed for a vertical U-tube recirculation steam generator (UTSG) of the type used in most pressurized water reactor nuclear steam supply systems.

The models ranged in complexity from a simplified model (Model A) with only three lumps to represent the primary fluid (reactor coolant), tube metal and the secondary fluid to a detailed model (Model D) with fourteen lumps and a moving boundary between the subcooled and boiling sections of the heat exchange region. The models are linear and are in the state variable form which is convenient for using standard general …

Inheritance Of Ear Height And Associated Characters Of Corn (Zea Mays L.), Bobby Gerald Harville

Doctoral Dissertations

A phenotypic recurrent selection program for low-ear placement in corn (Zea mays L.) was begun in 1961 in an early and a late maturing population involving several low-ear inbreds. Approximately 250 plants were grown in each generation of selection. The plants were divided into two equal size groups. Bulk pollen was collected from phenotypically low-ear plants of one group and used to pollinate phenotypically low-ear plants of the other group. Reciprocal pollinations were made in a similar manner. Minimum plant heights were imposed and plants flowering within a specific time span were pollinated. The total number of plants selected in …

Planning Donor-Supported Small Farmer Development Projects In Less Developed Countries : Lessons From Ethiopia And Ghana, Michael A. Fuchs-Carsch

Doctoral Dissertations

This dissertation was addressed to the problems with initiation of effective projects in less developed countries (LDC's) that seek to help small farmers produce more marketable surpluses. The focus was on projects being prepared for loan and grant support by the Agency for International Development, the World Bank and other international, donor agencies. Special attention was drawn to elements in the political and economic environment of LDC's and to the manner in which projects are brought into being and planned that are conducive to project acceptance and success. The histories of four small farmer projects which the author helped to …

Flavor Characterization Of Country Ham Flavor By Sensory Evaluation And Chemical Analysis, Cathy Lou Hix Baker

Doctoral Dissertations

A study was conducted on twenty-six country hams purchased from processors in four southern states, to relate objective chemical and physical determinations of raw cured country ham to the cooked flavor. Percent free fatty acid (expressed as oleic) was the best single predictor of mean sensory evaluation score (R² =0.52). Ninhydrin reactive material and carbohydrate along with free fatty acid were also important in good aged flavor (R² =0.64). Prediction equations with different variables as components in the statistical model were reported. Other analyses conducted were percent salt, percent moisture, color, pH, titratable acidity, percent lipid, total carbonyls, …

Nutritional Efficiency Of Angus Cow-Calf Units, Dennis Owen Onks

Doctoral Dissertations

Angus cow-calf pairs were individually fed over a five-year period. Data from 62 mature cows and 114 calves were obtained. Cows varied in initial weight and production potential. Cows were fed grass silage, ad libitum, throughout gestation and lactation. Calves were fed a complete finishing and growing ration post weaning. Efficiency of cow-calf units was defined as the ratio of the yearly TDN intake of the cow plus the pre-and post weaning TDN intake of the calves. Second-order polynomials were fitted through the biweekly efficiency ratios for individual calves and solved to determine the most efficient point. This efficiency was …

Comparison Of Methods Of Selection To Increase Yearling Weight Of Beef Cattle And Assessment Of Influence Of Sire Differences On Estimates Of Repeatability Of Cow Productivity, Thomas Bruce Turner

Doctoral Dissertations

The objectives of this study were: (1) to make a theoretical comparison of progress expected by selecting for a single trait with progress expected by selection based on an index including two traits and (2) to compare estimates of repeatability of cow productivity when the effect of sire is removed from the data and when it is not.

Data were collected over a period of seven years from 581 bull calves and 552 heifer calves from the purebred Angus herd at The University of Tennessee Plateau Experiment Station, Crossville.

Variables recorded at weaning (approximately seven and one-half months of age) …

The Effects Of Integral Hatha Yoga On Self-Actualization, Anxiety And Body-Cathexis In Drug Users, Timothy J. Thorpe

Doctoral Dissertations

The study was designed to discern the possible effects of Integral Hatha Yoga administered five times a week for four weeks to drug users at "Freedom House," a drug rehabilitation community at Eastern Psychiatric Hospital in Knoxville, Tennessee. The Experimental data were to provide sufficient information to reveal the differences in self-actualization, anxiety, body-cathexis and behavioral progress through the overall rehabilitation program, between a treatment and a control group.

In August of 1975, 11 patients at the drug unit received a lecture and demonstration of Integral Hatha Yoga. Eight of the patients agreed to take part in the study and …

Computer Simulation As A Medium For Teaching Inventory Management In Food Systems Administration, Joyce Willene Fleming West

Doctoral Dissertations

A conceptual framework was developed incorporating computer simulation as an instructional medium for teaching conceptual thinking and techniques for decision making and problem solving needed for inventory management. With this framework as a guide, an individualized instruction unit was designed and implemented for teaching cognitive learning.

Fifty-two food systems administration students at the University of Tennessee, Knoxville, evaluated the effectiveness of the individualized study unit (experimental method) as opposed to the traditional lecture (control) method in teaching inventory management principles. A pretest was administered to each student in selected junior and senior courses prior to the teaching unit. A posttest …

Tooth Eruption/Cognitive Development/Arithmetic Computation, Joseph August Baust Sr.

Doctoral Dissertations

The problem of the study was to investigate whether readiness for beginning formal arithmetic, typified by the types of skills required by arithmetic computation, or the Conservation of Number could be predicted by the eruption of the permanent incisors, chronological age, or the combination of chronological age and tooth age.

Sixty-six children were randomly selected for the testing so that there were 33 boys and 33 girls in the sample. The children were first grade, middle-class, Caucasoids from Knoxville, Tennessee. The chronological age of each child was computed in months, and each child had his teeth photographed to check for …

A Comparative Investigation Of Fantasy In Normal And Behaviorally Deviant Latency-Aged Boys, Elgan L. Baker

Doctoral Dissertations

The purpose of this study was to compare the fantasies of normal and deviant males between the ages of 8 and 10 in order to determine if systematic differences exist between the two groups. Further, the study attempted to delineate differences between the two deviant subgroups: Withdrawn children and Acting-Out children. The fantasies were examined both in terms of structure and content.

Thirty boys were selected from the Fayette County, Ky. public school system on the basis of normal intelligence, average school performance, middle class socioeconomic status and freedom from overt behavior problems. These children formed the Normal group. The …

Monsters With Human Voices : The Anthropomorphic Adversary Of The Hero In Old English And Old Norse Literature, James David Mason

Doctoral Dissertations

In Beowulf, the Eddas, and the Icelandic sagas, as in the literature of ancient Mesopotamia, the nature of the monstrous is best understood in terms of the interaction between monster and hero before and during combat. Some monsters, like Ti Amat and the Miogarosormr, seem to have developed from personifications of primal chaos: others seem derived from the impersonations of beasts in ritual initiation combats. In literature, however, both types of monsters tend to merge because writers model their narratives on actual human confrontations. Literature is also conditioned by its verbal medium so that an adversary's taunts and challenges before …

Relationships Of Soil Nitrogen Level To Yield And Nitrogen Content In Corn, Willie Miller

Doctoral Dissertations

Yield data for this investigation were collected from corn plots that were located on a Sequatchie loam soil with added fertilizer nitrogen levels of 0, 60, 120 and 180 pounds of N per acre. Soil samples were collected from each plot at depths of 0-6 and 6-12 inches when plants were approximately two feet high, during the ear leaf stage of growth and at maturity. Leaf tissue samples were collected during the ear leaf stage of growth. Percent nitrogen in leaf tissue along with NO₃-N and total NH₄-N in soil samples were determined on the Technicon …

Analysis Of Cost And Supply For Fire Protection Services In The Smaller Municipalities And Rural Areas Of Tennessee, Thomas H. Lederer

Doctoral Dissertations

Fire protection is a public service that plays a unique role protecting human life and property in a community. Recent studies indicate that fire protection is one of the key community characteris-tics in the plant location and expansion decisions made by industrial leaders, yet fire protection services are recognized to be severely inadequate in the rural areas of Tennessee. For these reasons, the specific public service to be analyzed in this study is fire protection. The problem faced by local government officials is to maintain and/or increase the quantity and quality of local public services in the face of a …

Analysis Of Selected Policy Alternatives In The Agricultural Sector Of The Philippines, Leonardo A. Gonzales

Doctoral Dissertations

The primary objective of this study was to estimate and evaluate the economic effects of selected policy alternatives on prices, output, employment and income in the agricultural sector of the Philippines. The policies evaluated were: fertilizer subsidy; efficiency of irrigation systems; rice price ceilings; mechanization; and natural calamities. The study used a national production-processing-distribution programming model (MAAGAP) and had the following assumptions: a given set of national demands for agricultural commodities; a set of national supplies of resources; and a set of production technologies. Given these sets of conditions and with the further assumption that Philippine agriculture approximated a perfectly …

Genotype-Environment Interaction In Traits Of Egg-Production Poultry Stocks, Shaker Mosleh Al-Mohammadi

Doctoral Dissertations

Data used in this study were collected during the Seventeenth and Eighteenth Tennessee Random Sample Laying Tests (1974 and 1975). Because of their importance to poultrymen many economic egg production traits were studied. Analysis of variance was conducted to determine the existence of the differences among stocks and treatments and of interactions. Stocks were found to differ significantly from each other with respect to most of the traits studied. To illustrate the differences among stocks, a ranking of their means with respect to each traits was prepared. Treatment effects (varying dietary salt levels and addition of bicarbonate and of methionine …

An Investigation Of The Relationship Between Extrinsic And Intrinsic Outcomes And Anticipated Job Satisfaction, Attitudes Toward Management, And Attitudes Toward Unions, Douglas P. Massengill

Doctoral Dissertations

One hundred sixty-seven trainees at a vocational training school were provided with job descriptions in which the levels of intrinsic and extrinsic outcomes along with whether or not the jobs were unionized were varied. Ss then completed questionnaires to assess anticipated reactions to the jobs.

It was predicted that both intrinsic and extrinsic outcomes would be related to anticipated job satisfaction, that whether or not a job was unionized would moderate the relationship between extrinsic outcomes and anticipated attitudes towards management, that only extrinsic outcomes would be related to anticipated attitudes toward a union, and that only extrinsic outcomes would …