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The Kinetics Of Volatile Lead Compound Formation During Simulated Hazardous Waste Incineration, Joel Thomas Shor

Doctoral Dissertations

Air pollution from fine metal-containing particles (and vapors) formed during hazardous waste incineration has attracted less attention than other incinerator emissions. Recently, however, metal pollution has become subject to more stringent regulations. The U.S. Environmental Protection Agency has announced limitations on the emissions of ten toxic metals. Pollution control systems that will effectively remove fine (submicron) metal-containing particles from flue gases are difficult to construct. Incinerators have not been designed or operated to minimize the formation of such particles. Industrial-scale incineration testing has produced anomalous results for air emissions of lead and other metals.

To gain a better fundamental understanding …

In Pursuit Of Persistence: A Qualitative Investigation Of Community College Stopouts' Attempts To Obtain A College Degree, Doris Jean Ivie

Doctoral Dissertations

Twelve community college stopouts (current students who had stopped attending college for at least one semester in the past and who had since re-enrolled) who fit the "success" criterion of having achieved sophomore status and of maintaining at least a 3.00 grade-point average were interviewed using nonstructured reflective interview techniques. The participants were encouraged to reflect on their disparate experiences of college, on themselves within each of those experiences, and on sources of social support that had contributed to their decisions to leave, to return to, and to remain in college. The participants discussed their various college experiences in terms …

Informing Physicians About The Relevance Of Pl 99-457: An Experimental Evaluation Of A Dissemination Method, Fathima Humera

Doctoral Dissertations

The purpose of the present study was to evaluate experimentally the combined effects of an information package comprised of a written pamphlet and a videotape on physicians' knowledge about federal law and its implication for making referrals to early intervention programs. There were 38 physicians with practice located in a 16-county region of East Tennessee who participated in the study. Physicians were randomly assigned to experimental and control groups. Physicians assigned to the experimental group received the information package and the Physicians' Knowledge and Practice Questionnaire. Physicians in this group were given 2 weeks to review the materials and complete …

The Effects Of Low Frequency Electrical Stimulation On Muscular Strength And Endurance In Individuals With Multiple Sclerosis, Lisa L. Oglesby

Doctoral Dissertations

The purpose of this study was to investigate the results of a practical application of a low frequency electrical stimulation (LFES) program of 8 pps to individuals with multiple sclerosis. Previous research has shown that such a program induces a conversion of fast twitch muscle properties to those of slow twitch. Electrical stimulation was applied for 3 hours per day, 6 days a week, for 6 weeks, to the quadriceps femoris muscle of nine subjects with multiple sclerosis. Pre and post measurements of average peak torque, mean force, and fatigue slope were taken as indices of the muscle's strength and …

A Critique Of Tractarian Semantics, Gary Watts Levvis

Doctoral Dissertations

This is a critique of the principal claims made within Ludwig Wittgenstein's Tractatus Logico-Philosophicus. It traces the development of his thought from the time he dictated the pre-Tractarian "Notes on Logic" to Russell up until about 1932 when he began work on the Philosophical Grammar. The influence exercised upon him by Frege, Russell and Moore are considered at length. Chapter one examines Moore's relational theory of judgment which Wittgenstein apparently accepted upon his arrival at Cambridge in 1911. From Moore Wittgenstein would inherit one of the fundamental metaphysical theses of the Tractatus, namely, that the world consists of facts rather …

Understanding Idealization: Beyond Cognitive Appraisals, Nancy R. Hague

Doctoral Dissertations

Meanings of idealization were explored from psychoanalytic and social psychological perspectives. Idealization relating to normal development, as described by Kohut and Kernberg, ranges from an unrealistic belief that the other is all-good and omnipotent to a more realistic appreciation of a separate other. Idealization which represents a pathological process was also discussed by Kernberg. Social psychologists (e.g., Hall & Taylor) operationalized idealization in terms of cognitive appraisals and studied it in the context of love.

To construct a new measure, items were generated to represent various types and meanings of idealization. In phase I of research, 230 items were administered …

Clomazone Efficacy In Snap Beans And Dissipation In Soil, Kermit Bruce Kirksey

Doctoral Dissertations

Studies were conducted from 1991 to 1993 to determine the effects of clomazone on snap bean (Phaseolus vulgaris) growth and yield. Field experiments were conducted on Etowah, Sequatchie, and Lily soils. Clomazone was applied preemergence at 0, 0.28, 0.56, 0.84, or 1.12 kg ai/ha in a randomized complete block with treatments replicated four times. Snap beans were evaluated for chlorosis, density and yield. Data were subjected to analysis of variance and means were separated utilizing Fisher's Least Significant Difference at the 0.05 probability level. Visual evaluations were made approximately 2, 4 and 6 wk after treatment in each …

The Effect Of Off-Farm Economic Activities On Rural-Urban Migration In Brazil, Ricardo C. Lima

Doctoral Dissertations

Rural-urban migration models commonly assume that rural income and employment are mainly derived from the farm economy. Many studies of rural labor markets in developing countries, however, have indicated that a significant portion of rural employment occurs in nonfarm activities. The present study incorporates the rural nonfarm economy in the traditional rural-urban migration framework, as a determinant of rural labor relocation. Brazil was used as a case study due to the economic and demographic changes experienced by this country during the period between 1960 and 1980. The migration model was estimated in a system of regression equations, which used cross-state …

Income Potential And Stability Of Diversified Tennessee Farms With Emphasis On Environmental Horticulture Plants, Sarfraz Ahmad

Doctoral Dissertations

Generally, there is a considerable variability in year-to-year farm income for the typical farmer. Variation in farm income poses a risk in agricultural decision making. Diversification among enterprises in farm production has been practiced by producers as one measure against risk. Diversification in farm production involves adoption of a number of production activities instead of a single activity by the producer. Production diversification can potentially be successfully employed to manage price, yield and income risk if different crops, livestock, and or other alternative enterprises react differently to events. The inherent logic has applications in any situation where choice must be …

The Spatial And Temporal Distribution Of Fishes In The Holston River System Of North Carolina, Tennessee, And Virginia, Mark Handly Hughes

Doctoral Dissertations

Over 1,000 fish collections from 1867 to 1994 resulted in the reporting of 134 species of fishes from the Holston River system. One-hundred thirty of those species are considered within as valid records. About 14% of those species were introduced into the system, leaving 112 indigenous species reported from the Holston River system. V Distribution of species throughout space and time is presented in tabular form in the appendices, based on the availability of collection records. Catalogued specimens are listed for 117 species. Perturbations of species assemblages due to mercury pollution and impoundment of the Holston River system arc considered. …

The Effect Of Feeding Protected Dietary Lipid Supplements On The Fatty Acids Composition Of The Blood Serum And The Milk Fats Of Lactating Ewes, Yobouet Dje

Doctoral Dissertations

This work was undertaken to assess the potential of acetaldehyde and diacetyl as alternative protective agents to formaldehyde, a carcinogen, for the commercial production of products from ruminant animals (cattle, sheep, goat) with increased unsaturated fatty acid (18:1, 18:2 and 18:3) contents. In experiment 1, different gels were prepared with emulsions of (1) defatted soy flour-casein-sunflower oil, (2) ground full-fat soybean seeds-casein and (3) ground full-fat sunflower seeds-casein. Each gel protein—oil emulsion was treated with 5% (w/w emulsion) formaldehyde (FA) (37% solution), acetaldehyde (AC), diacetyl (DA) to form a gel or not treated (CO).

The microstructures of type 1 gels …

The Effect Of Processing Method, Storage Temperature And Length Of Storage On Chemical And Sensory Attributes Of Low-Fat Milk, Jennifer Lynn Maruri

Doctoral Dissertations

Ultrapasteurized milk (UP) stored at 4, 7 or 10°C for up to 36 d and high temperature-short time (HTST) pasteurized milk stored at 4 or 7°C for up to 15 d were analyzed to determine the effect of processing method and storage time and temperature on intensities of sensory characteristics and concentrations of free fatty acids and volatile compounds, including sulfur. Eight characteristics, bitter, buttery, cooked, feed, painty, rancid, sour and sweet were selected by a trained panel to describe UP and HTST milk. Intensities of bitter, painty and rancid increased between 8 and 15 d in UP and HTST …

Interaction Of Feeding Time And Temperature And Their Relationship To Performance Of The Broiler Breeder Hen, Maen Helmi Samara

Doctoral Dissertations

Experiments with broiler breeder hens were undertaken to determine the effect of feeding time and environmental temperature on various production parameters, feed consumption, body weight, blood pH and blood concentrations of calcium, estradiol and androstenedione. Two temperature treatments were used: low cyclic temperature (10-25 C or LO); and high cyclic temperature (21-39 C or HI) . Hens were randomly assigned to feeding times of either 0700, 0700 and 1800, or 1800 h. In another experiment, hens were assigned to feeding times of either 0700 or 1800 h.

The results obtained indicated that feeding time and temperature did not markedly affect …

Effects Of Btp-1 And Oxytocin On Prostaglandin And Protein Production By The Bovine Endometrium, Roger D. Johnson

Doctoral Dissertations

There is evidence that conceptal proteins in general, and bovine trophoblast protein-1 (bTP-1) specifically, alter biochemical mechanisms which are responsible for returning cattle to estrus. Endometrial explants, gland fragments, glandular epithelial cells, and stromal cells from uteri of cyclic cows (N=4) were cultured in medium containing 1 ug/ml bovine serum albumen (BSA), 1 ug bovine trophoblast protein-1 (bTP-1), 50 mU oxytocin after 8 h, or 1 ug/ml bTP-1 followed by 50 mU oxytocin at 8 h and examined their effects on prostaglandin and protein secretion. Explants treated with bTP-1 secreted less Prostaglandin F₂α (PGF₂α) than explants …

A Study Of The University Of Tennessee Ronald Mcnair Post Baccalaureate Achievement Program: Factors Related To Graduate School Enrollment For First Generation, Low-Income And Under-Represented College Students, Kenneth Chatman

Doctoral Dissertations

The Ronald McNair Post Baccalaureate Achievement Program is a federal response to the recent decline in the number of African American doctoral degrees conferred and the general under-representation of minority group members in graduate education. The McNair Program is designed, through enrichment activities, to facilitate doctoral study among first generation, low-income and under-represented students. The University of Tennessee, Knoxville was one of the first 14 programs funded in the United States. Now, sixty-eight McNair Programs are funded by the U.S. Department of Education.

This quantitative case study of 60 participants in the University of Tennessee Ronald McNair Post Baccalaureate Achievement …

Images Of War In The Works Of Poet-Soldiers Of The Thirty Years' And Prusso-Austrian Wars, Jacqueline Fields Ratliff

Doctoral Dissertations

This research involves a study of the imagery of war of six poet-soldiers: Diederich von dem Werder, Georg Greflinger, and Christian Brehme, from the time of the Thirty Years' War and Ewald Christian von Kleist, Johann George Scheffner, and Heinrich Wilhelm von Stamford from the time of the Prusso-Austrian Wars. The aims of the study were twofold -- to ascertain how these writers depict war through imagery in their poetic works, and to note changes in such imagery in the intervening century between the two periods of conflict. Attention was focused on certain categories of imagery, including the origins of …

Slaves And Master In The Upland South: Archaeological Investigations At The Mabry Site, Henry St. Clair Mckelway

Doctoral Dissertations

No abstract provided.

Some Aspects Of Affect Measurement On Rorschach's Test And The Multidimensional Personality Questionnaire, Greta L. Hunter

Doctoral Dissertations

The purpose of this study was to investigate some of the ways in which the relationship between two types of measures that assess positive and negative expectations about the world might be improved. The first measure, an index in the Burstein-Loucks comprehensive scoring system (1989) for Rorschach's test, was based on object relations theory. The second measure consisted of two higher-order factors of the Multidimensional Personality Questionnaire (Tellegen, 1982), an empirically-derived instrument. Revision of the Burstein-Loucks index did not further improve the magnitude of the relationship between the two measures, although it may have slightly changed the nature of that …

Bones Of The Knee Joint And Individual Features That Can Be Used For Forensic Identification, Emily Anne Craig

Doctoral Dissertations

This dissertation describes the normal osteology of the bones of the knee joint in correlation to the surrounding soft tissues. Traumatic and surgical modifications of the normal osteological features are also discussed in reference to their significance for anthropological analysis as well as for forensic identification. As a primary focus, a new method of racial determination from the distal femur is described in detail.

This new method involves the measurement of the intercondylar shelf in relation to the posterior shaft of the femur. The intercondylar shelf is a feature of the distal femur that shows significant difference between American Whites …

Seasons Of Change: Football Desegregation And The University Of Tennessee And The Transformation Of The Southeastern Conference, 1963-67, Robert Thomas Epling

Doctoral Dissertations

The University of Tennessee football program excluded African-Americans from 1891 to 1967. During most of that span, Volunteer athletic teams competed in the Southeastern Conference (SEC), the last major intercollegiate athletic league to desegregate. Between 1963 and 1967, changes in the university athletic department, in the conference, and in society at large prompted Tennessee and several other SEC members to integrate athletics. The process of racial desegregation ranks as perhaps the least chronicled significant event in University of Tennessee football history.

In addressing that void, this dissertation examines the desegregation of the University of Tennessee football program within the context …

Chlorophyll Fluorescence As A Measure Of Ozone Induced Stress, Jerry L. Faulkner

Doctoral Dissertations

Chlorophyll fluorescence is a nondestructive, intrinsic probe of photosynthesis. It has been used in a variety of physiological and environmental research. This study attempted to investigate the usefulness of chlorophyll fluorescence as a monitor of ozone induced stress in Quercus rubra L.

Chlorophyll fluorescence measurements were taken from mature trees and seedlings in open top chambers located at the Tennessee Valley Authority Air Pollution Research Facility at Norris, Tennessee. Chambers reflected one of three ozone concentration treatments: sub-ambient, ambient, or twice ambient. Spring leaf expansion was also measured as was spring and autumn chlorophyll content of leaves from mature trees. …

Extraction Of Caffeine From Guaraná Seed With Supercritical Carbon Dioxide, Cyrus Bozorg Mehr

Doctoral Dissertations

A single-pass supercritical fluid extraction system was designed to study caffeine solubility in the fluid. Caffeine was extracted from guaraná seeds with supercritical carbon dioxide in the system. Extraction was conducted as a function of pressure and temperature to determine caffeine solubility at equilibrium conditions at 136.1-272.2 atm and 308, 318, and 328 K. The solution of caffeine into supercritical carbon dioxide was directly affected by carbon dioxide density. Caffeine solubility was modelled by using thermodynamic relationships and Peng-Robinson equation of state. Effective diffusion coefficients of caffeine were determined by conducting long-term extraction experiments on ground guaraná seeds.

An Assessment Of Neurophysiological, Behavioral, And Performance Differences Between Adhd And Non-Adhd Children, Jeffery Neal Swartwood

Doctoral Dissertations

This study examines ADHD from the perspective of neurological, behavioral, and performance data. Subjects were twenty-three nine to eleven year old ADHD boys with complaints of hyperactivity and twenty-three matched controls. Differences between groups were invesitigated using referential nineteen-channel EEG spectral analysis, cortical event related potential data, rating scale data, and continuous performance test data. Additionally, physiological data was correlated with behavioral data to reveal consistencies. Results from the behavioral data were consisitent with previous research. ADHD subjects had significantly deviant ratings on the parental rating scale when compared with controls. Additionally, control subjects performed significantly better on the continuous …

An Exploration Of Cognitive And Metacognitive Performance With Cognet Mle Treatment And No Treatment Control Students, Martha Mcbrayer Jones

Doctoral Dissertations

This study investigated the effects of the Cognitive Enrichment Network (COGNET) mediated learning instructional approach, an approach based on Feuerstein's theory of structural cognitive modifiability, on cognitive and metacognitive variables. COGNET and control subjects were in grades K-3 and were from two schools in rural Tennessee. They were identified as potential subjects by being former Head Start participants, receiving free lunch, or by teacher referral for at risk status. They participated in the study for two years. Students were videotaped during the pre- and post-test administrations of the Cognitive Functioning Analysis Instrument. From these videos, the cognitive phase durations …

Unaided Factors Predicting Client-Assessed Hearing Aid Performance, Usage And Satisfaction, Hilary J. Crowley

Doctoral Dissertations

The purpose of this study was to determine if client-assessed hearing aid performance, usage, and satisfaction ratings could be predicted before hearing aids are purchased. Aided performance was represented by the Profile of Hearing Aid Performance, (PHAP, Cox and Gilmore, 1990), subscales. Based upon data from 46 subjects, multiple regression was applied to 16 unaided variables to determine if they could be used to predict the response variables of performance, usage and satisfaction. The 16 unaided variables included pure tone average, slope of hearing loss, the Speech Perception in Noise (SPIN) test (Kalikow, Stevens & Elliott, 1977), dynamic range, comfortable …

Psychological Adjustment And Family Experiences Of Children In Foster Care Placed With Or Apart From Siblings, Susan M. Flynn

Doctoral Dissertations

It was hypothesized that foster children placed with a sibling would show better psychological adjustment and more embeddedness in the foster family than those foster children without such contacts. Subjects were 41 foster children between the ages of 6 and 12 years. Cognitive maturity, problem behaviors, psychological maturity, dependency, wariness, curiosity, and attention seeking were aspects of psychological adjustment. These were measured on the Peabody Picture Vocabulary Test-Revised, Child Behavior Checklist, Tasks of Emotional Development Test, Marble-in-the-Hole Game, and Picture Game. Embeddedness in the foster family was measured with a family sculpting technique. Family Boundary Ambiguity was measured with a …

Relationship Patterns Among Men And Women From Stepfather Families, Susan Montgomery Brinn

Doctoral Dissertations

This research examined differences in relationship patterns between men and women in stepfamilies and men and women in biological families. Previous studies have generally reported more distant relationships with parents for respondents in stepfamilies. Findings on relationships outside the home have been contradictory; some research observed no effect on peer relationships for subjects from stepfamilies, still others reported more difficulty in relationships and greater risk for delinquency among this population. In order to measure relationship differences, three psychometric scales and the social network list were administered to 215 college students (63 stepchildren and 152 biological children). Results indicated that stepsons …

Black Bear Habitat Use In Great Smoky Mountains National Park, Frank Teunissen Van Manen

Doctoral Dissertations

I used telemetry locations of American black bears (Ursus americanus), collected in Great Smoky Mountains National Park (GSMNP) from 1976 to 1982 , to evaluate home ranges, movements, and habitat use. Annual home range estimates averaged 7.6 km² (SD = 7. 1) for females and 48.5 km² (SD = 2 1 . 1) for males. For both sexes, fall ranges were larger than summer ranges and shifts occurred between summer and fall centers of activity. Annual and seasonal changes in spatial use of black bears are largely explained by changing activity and movement patterns in response to variation …

A Comparision Of Alternative Forecasting Techniques : An Application Of Scan Data, Kent L. Wolfe

Doctoral Dissertations

Scan data have provided a suitable data source for estimating consumer demand relationships at the retail level. These data capture actual quantity and price information which can be combined with additional explanatory variables, such as advertising, promotion and seasonality, to estimate the retail demand function for specific products. Despite the availability of scan data, relatively little research has focused on forecasting at the retail level.

The competitive nature of the supermarket industry, both the encroachment of warehouse food retailers and generic private label products, have lead to an increased interest in consumer demand analysis at the retail level. The increased …

A Pedological Investigation Of Catchment Basins Below Late Minoan Period Archaeological Sites In Eastern Crete, Greece, Michael Wayne Morris

Doctoral Dissertations

A series of soil pedons were investigated in conjunction with the Kavousi Archaeological Expedition in Eastern Crete, Greece. These soils were located in sediment catchment basins in landscape positions that were topographically below archaeological sites known to have been inhabited in the Late Minoan IIIc Period (1100-900 B.C.). The objective of this investigation was to use soil information in concert with available archaeological and chronological data to reconstruct the Late Pleistocene and Holocene landscape history of Eastern Crete. Four soil pedons were located near the archaeological site of Karphi which is in the Diktean Range north of the Lasithi Plateau. …