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LSU Historical Dissertations and Theses

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Articles 1891 - 1920 of 7798

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Reactivity And Mechanistic Studies On Bimetallic Hydroformylation Rhodium Catalyst Systems., Spencer George Train Jan 1994

Reactivity And Mechanistic Studies On Bimetallic Hydroformylation Rhodium Catalyst Systems., Spencer George Train

LSU Historical Dissertations and Theses

The fundamental purpose of this project was to expand the knowledge of the et,ph-P4 ligand system, $\rm Et\sb2PCH\sb2CH\sb2P(Ph)CH\sb2P(Ph)CH\sb2CH\sb2PEt\sb2$, used to make the very active bimetallic catalyst racemic- ($\rm Rh\sb2(NBD)\sb2(et,ph$-P4)) (BF$\sb4)\sb2$. The ligand was designed to both bridge and chelate two metal centers to allow the metals to remain in close proximity. This is the key to the bimetallic cooperativity concept involved in the hydroformylation of olefin substrates, where an intramolecular hydride transfer has been proposed to occur from one rhodium center to another during the catalytic cycle. This project involved the study of a variety of olefin substrates to probe …

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Effect Of Temperature, Cell Concentration, And Split Dose Gamma Radiation On The Radiosensitivity Of Listeria Monocytogenes., Linda S. Andrews Jan 1994

Effect Of Temperature, Cell Concentration, And Split Dose Gamma Radiation On The Radiosensitivity Of Listeria Monocytogenes., Linda S. Andrews

LSU Historical Dissertations and Theses

Among food-borne pathogens, Listeria monocytogenes is one of the more resistant to food processing methods, including irradiation. USFDA approval for irradiation of processed meat and seafood products likely to contain Listeria spp. is $<$3 kGy gamma radiation. The incidence of L. monocytogenes in food products varies between 5-30% and at levels $<10\sp4$ CFU/g. With the capacity of this bacterium to multiply at refrigeration temperatures and the zero tolerance level mandated by the USFDA it becomes imperative to maximize the efficiency of the irradiation process. The first purpose of this study was to determine if initial cell concentration and/or temperature at time of irradiation influences the radiosensitivity of L. monocytogenes. Secondly, to determine whether split dose application would effect the radiation response of this bacterium. Concentrations of 10$\sp3,$ 10$\sp6$ and 10$\sp9$ cfu/ml of L. monocytogenes Scott A, were suspended in tryptic soy broth and exposed to 0-5 kGy gamma (1.25MeV) radiation at 20, 4, and -80$\sp\circ{\rm C}.$ Split doses were applied in equal portions to initial cell concentrations of 10$\sp6$ and 10$\sp9$ at the same temperatures. Surviving cells under the various conditions were enumerated and irradiation D-values were calculated from linear regression curves. At all temperatures, cell concentrations of 10$\sp3{\rm CFU/ml}$ were reduced to non recoverable levels with 2 kGy gamma radiation. The irradiation D-value of 0.43 kGy for frozen (-80$\sp\circ{\rm C})$ cultures of 10$\sp6$ CFU/ml was significantly lower (p $<$ 0.05) than the D-values (0.58 and 0.62 kGy) for the same cell concentration at the other two temperatures (20$\sp\circ$ and 4$\sp\circ{\rm C},$ respectively). For higher cell concentration of 10$\sp9$ cfu/ml, a D-value of 0.42 kGy was obtained for both 4$\sp\circ{\rm C}$ and -80$\sp\circ{\rm C}$ these were significantly lower (p $<$ 0.05) than 0.50 kGy for 20$\sp\circ{\rm C}$ suspensions. With both cell concentrations, the lowest D-values were obtained when cells were irradiated in the frozen state indicating a that primary cell damage was due to direct effects of irradiation. Split doses of 1 and 2 hours time between fractions approached the generation times for this bacterium and were significantly reduced at 20$\sp\circ{\rm C}.$ However, there was no consistent trend in reductions at 4$\sp\circ$ or -80$\sp\circ{\rm C}.$ Split dose application of irradiation to food pathogens should be further explored.

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The Influence Of Regional-Scale Circulation On Precipitation Variability In The Southern United States., Anthony Jude Vega Jan 1994

The Influence Of Regional-Scale Circulation On Precipitation Variability In The Southern United States., Anthony Jude Vega

LSU Historical Dissertations and Theses

The proximity of the southern United States to large water bodies, mountain systems, and the arid climate of the desert southwest makes extended precipitation forecasts exceedingly difficult. In order to better understand the complex precipitation mechanisms, this analysis addresses the relationships between the regional-scale circulation and long-term precipitation variability and change in the southern US for each season through a 42 year study period. Five unique precipitation regions were created for each season, and seasonal anomalies were calculated and examined by region for changes in variability and slope through time. Long-term climate change was detected in the precipitation regions only …

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The Relationship Between Intrinsic And Augmented Feedback In Motor Skill Learning., David Ian Anderson Jan 1994

The Relationship Between Intrinsic And Augmented Feedback In Motor Skill Learning., David Ian Anderson

LSU Historical Dissertations and Theses

Four experiments examined the influence of knowledge of results (KR) schedule and the characteristics of intrinsic feedback on the acquisition and retention of a simple motor task. In the first experiment, subjects practiced a one-dimensional aiming movement and were provided with KR either directly after each trial or after a delay of two trials. The results showed that subjects who received KR after a delay of two trials were less accurate in acquisition but more accurate in retention than subjects who received KR directly after each trial. These results were replicated in a second experiment using a two-dimensional aiming movement. …

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A Self-Adaptive Database Buffer Replacement Scheme., Yueguo Tong Jan 1994

A Self-Adaptive Database Buffer Replacement Scheme., Yueguo Tong

LSU Historical Dissertations and Theses

The overall performance of a database system is very sensitive to the buffer replacement algorithm used. However, the performance evaluation of database buffer replacement algorithms commonly assumes that database accesses are independent and the probability for each individual database record to be accessed is fixed. Due to these rigid assumptions, the results of performance evaluation are not always reliable. In this dissertation, we apply Simon's model of information accessing to model database accessing frequencies. This approach relaxes the independent assumption, and since it also allows certain dynamic behavior in accessing frequencies; thus, it is more robust and preferable over the …

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Structural Equation Modeling Analysis Of Risk Factors For The Development Of Eating Disorder Symptoms In Adolescents., Susan Elizabeth Barker Jan 1994

Structural Equation Modeling Analysis Of Risk Factors For The Development Of Eating Disorder Symptoms In Adolescents., Susan Elizabeth Barker

LSU Historical Dissertations and Theses

Risk factors which have been shown to influence the development of body dissatisfaction and eating disturbance in adolescents include depressed mood, low self-esteem, a history of teasing about physical appearance, social and parental pressure to be thin, pubertal timing, and actual body weight or body mass index. In the present study, an etiological model was proposed with these risk factors as predictors of the presence of eating disorder symptoms; this association was hypothesized to be mediated by dissatisfaction with body shape and weight. Structural equation modeling was used to test this theoretical model within a total sample of 345 adolescent …

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Imagining Workers: The Working-Class Presence In Late Nineteenth-Century American Literature. (Volumes I And Ii)., William Lynn Watson Jan 1994

Imagining Workers: The Working-Class Presence In Late Nineteenth-Century American Literature. (Volumes I And Ii)., William Lynn Watson

LSU Historical Dissertations and Theses

This dissertation examines how late nineteenth-century American realist and naturalist narratives defuse the working-class drive for class self-determination and political power. The texts examined are Rebecca Harding Davis's "Life in the Iron Mills" (1861), Elizabeth Stuart Phelps's The Silent Partner (1871), Henry James's The Princess Casamassima (1886), William Dean Howells's A Hazard of New Fortunes (1890) and Theodore Dreiser's Sister Carrie (1900). Each work is examined in the context of a specific proletarian insurgency that was taking place at roughly the same time, and sometimes the same place, in which the author was writing. Each text bears the impress of …

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Optimal Preventive Maintenance Strategies For A Production System Subject To Random Shocks., Frances Fertitta Barbera Jan 1994

Optimal Preventive Maintenance Strategies For A Production System Subject To Random Shocks., Frances Fertitta Barbera

LSU Historical Dissertations and Theses

The failure rate of production equipment is usually increasing as wear accumulates with usage. An improved preventive maintenance approach is accomplished through predictive maintenance, where an indicator of wear, like vibration or heat, is measured and used to determine the optimal time of an adjustment (or maintenance) such as realignment, oil change or replacing seals. The state of the unit is restored into the same original "as new" state both after adjustment or failure (followed by a repair). This research will develop mathematical models for a single and two unit production system. In the development of the one unit model, …

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Connectivity For Matroids And Graphs., Haidong Wu Jan 1994

Connectivity For Matroids And Graphs., Haidong Wu

LSU Historical Dissertations and Theses

This dissertation studies connectivity for matroids and graphs. The main results generalize Tutte's Wheels and Whirls Theorem and have numerous applications. In Chapter 2, we prove two structural theorems for 3-connected matroids. An element e of a 3-connected matroid M is essential if neither the deletion M$\\$e nor the contraction M/e is 3-connected. Tutte's Wheels and Whirls Theorem proves that the only 3-connected matroids in which every element is essential are the wheels and whirls. If M is not a wheel or a whirl, we prove that the essential elements of M can be partitioned into classes where two elements …

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Kinetics Of The Immune Response To Mycobacterium Paratuberculosis Of Resistant And Susceptible Mice., Ronald Sidney Veazey Jr Jan 1994

Kinetics Of The Immune Response To Mycobacterium Paratuberculosis Of Resistant And Susceptible Mice., Ronald Sidney Veazey Jr

LSU Historical Dissertations and Theses

The resistance and immunologic responses of a Bcg susceptible (C57BL/6) and Bcg resistant (C3H/He) strain of mouse were compared after infection with Mycobacterium paratuberculosis. Bacterial resistance was evaluated by bacterial counts and histopathology of chronically infected mice. Levels of non-specific macrophage activation and the response of various T cell subsets were also evaluated following infection. Susceptible mice orally infected with Mycobacterium paratuberculosis developed granulomatous lesions containing acid-fast bacteria in the mesenteric lymph nodes. Significant differences in CFU of M. paratuberculosis were observed between C57BL/6 and C3H/He mice following an i.p. infection. Susceptible mice failed to limit bacterial proliferation, while bacterial …

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Effects Of Nandrolone Decanoate On Strength, Markers Of Bone Formation And Turnover In Obese Postmenopausal Women With Normal Bone Density., Ellen Rose Brooks Jan 1994

Effects Of Nandrolone Decanoate On Strength, Markers Of Bone Formation And Turnover In Obese Postmenopausal Women With Normal Bone Density., Ellen Rose Brooks

LSU Historical Dissertations and Theses

Treatment with androgens and anabolic steroids in conditions of high bone turnover seen in osteoporotic postmenopausal females has resulted in bone density improvement. Research has demonstrated a link between muscle mass and bone due to the mechanical demands placed on bone by muscular contractile force associated with physical activity. This study examined whether treatment with a synthetic anabolic steroid, 30 mg. of nandrolone decanoate every two weeks, or placebo increased lean mass, cross-sectional area of thigh muscle and muscle torque production while preserving bone mineral density (BMD) in 18 dieting, sedentary, obese, postmenopausal females not on estrogen replacement therapy. Obesity …

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The Effect Of Time Pressure On Auditor Attention To Red Flags In A Dual-Task Environment., Robert Lance Braun Jan 1994

The Effect Of Time Pressure On Auditor Attention To Red Flags In A Dual-Task Environment., Robert Lance Braun

LSU Historical Dissertations and Theses

Motivated by recent attention given to the independent auditor's role in detecting red flags, this dissertation investigates the effect of time pressure on auditors' attention to red flags in the auditing environment. In so doing, the earlier work of McDaniel (1990) investigating the effects of time pressure on the auditor's ability to execute auditing tests of details is extended. Authoritative sources indicating that red flag detection is performed as a subsidiary task in a multi-task auditing environment are presented. The Easterbrook hypothesis, which holds that a progressive reduction in the range of cue utilization accompanies increases in arousal, provides theoretical …

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Reservoir Performance History Matching Using Type-Curves., Jeffrey Guy Callard Jan 1994

Reservoir Performance History Matching Using Type-Curves., Jeffrey Guy Callard

LSU Historical Dissertations and Theses

Recently, decline-curve analysis has expanded to permit engineers to analyze a petroleum reservoir directly in regard to its fluid-flow characteristics and its volumetric extent using rate-time type-curves of the constant terminal pressure solution of the diffusivity equation. This analysis is of enormous value to reservoir managers whose goal is to maximize oil and gas production from a petroleum reservoir. Reservoir extent, continuity, and flow capacity are paramount characteristics that are considered when developing models that predict reservoir performance while using alternative depletion strategies, such as during fluid-injection projects or enhanced recovery. Reservoir producing conditions to which this technique can be …

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Effect Of Processing On Protein And Carotenoids In Weaning Food Formulated From Sweetpotatoes, Or Apios Americana., Michael Andrew Ameny Jan 1994

Effect Of Processing On Protein And Carotenoids In Weaning Food Formulated From Sweetpotatoes, Or Apios Americana., Michael Andrew Ameny

LSU Historical Dissertations and Theses

White flesh sweetpotatoes (Ipomoea batatas (L.) Lam) are a major food crop in developing countries. This study was to evaluate the protein and carotenoid content and quality of various white fleshed African sweetpotatoes and Apios americana tubers for use as a weaning food. The sweetpotato and Apios are not normally considered sources of carotenoids and proteins, but the wide use of sweetpotatoes as a source of carbohydrate and the renewed interest in Apios warrant the study of carotenoids and proteins in these crops. Total carotenoids ranged from 0$\mu{\rm g}$/100g to 260$\mu$g/100g (fresh weight basis) for sweetpotatoes. Apios total carotenoids ranged …

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Traction And Agricultural Tractor Tire Selection Studies., Francois Pascal Brassart Jan 1994

Traction And Agricultural Tractor Tire Selection Studies., Francois Pascal Brassart

LSU Historical Dissertations and Theses

A machine was built to study non-rolling tire stiffness and damping coefficients of agricultural tractor tires in the vertical direction. Static deflection on a rigid surface was measured as a function of vertical load. During dynamic experiments, a sinusoidal forcing function was imposed on the test tire to determine dynamic stiffness and damping coefficient from load and deflection measurements. The experimental setup and methodology are described. Ten tires were tested. Both static and dynamic stiffnesses appeared linearly related to inflation pressure. No correlation was found between dynamic properties and excitation frequency. Comparisons among stiffness and damping coefficient values were made …

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An Investigation Of Behavior Problems Of Children With Down Syndrome And Their Relationship To Life Events., David Alan Coe Jan 1994

An Investigation Of Behavior Problems Of Children With Down Syndrome And Their Relationship To Life Events., David Alan Coe

LSU Historical Dissertations and Theses

Behavior problems of 44 children with Down Syndrome between the ages of 6 and 15 and 44 controls without mental retardation matched for age, sex and socioeconomic status were compared by means of mother and teacher ratings. Ratings from both sources indicated that children with Down Syndrome had more behavior problems, in particular attention deficit, noncompliance, thought disorder and social withdrawal. Thirty one percent of these children were identified by mothers as having a significant behavior problem compared with 58% of those rated by teachers. In both cases, Down Syndrome behavior problem prevalence exceeded that for controls by a three …

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Pairing And Quadrupole Interactions In The Pseudo-Su(3) Shell Model., Chairul Bahri Jan 1994

Pairing And Quadrupole Interactions In The Pseudo-Su(3) Shell Model., Chairul Bahri

LSU Historical Dissertations and Theses

Pseudo-SU(3) symmetry along with its simple symmetry-preserving and symmetry-breaking interactions is presented. This symmetry is a direct consequence of pseudo-spin symmetry which can be clearly seen in a single-particle shell model picture of heavy (A $\sbsp{\sim}{>}$ 100) atomic nuclei. Good pseudo-spin symmetry is shown to have its origin at a more fundamental level by considering relativistic mean field results for the strength parameters of the spin-orbit and the orbit-orbit interactions. As long as the residual interaction is a pseudo-spin scalar interaction, the many-particle extension of the single-particle picture is also expected to have,good total pseudo-spin symmetry. The quadrupole-quadrupole interaction …

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Intraspecific Variation In The Response Of Baldcypress (Taxodium Distichum) Seedlings To Salinity., James Andrew Allen Jan 1994

Intraspecific Variation In The Response Of Baldcypress (Taxodium Distichum) Seedlings To Salinity., James Andrew Allen

LSU Historical Dissertations and Theses

This study evaluated genotypic variation in responses of baldcypress (Taxodium distichum) seedlings to combined flooding and salinity stress. Two experiments form the core of this dissertation. In the first experiment, seedlings of 15 open-pollinated families of baldcypress were exposed to combined salinity and flooding stress under greenhouse conditions. Ten of the families were from coastal locations that were slightly brackish. The other families were from freshwater locations. Five salinity levels were investigated--0, 2, 4, 6, and 8 g l$\sp{-1}$ artificial seawater--all with shallow flooding. Substantial variation was found among salinity levels and families for most of the response variables assessed. …

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A Relaxation Scheme For Mesh Locality In Computer Vision., Weian Deng Jan 1994

A Relaxation Scheme For Mesh Locality In Computer Vision., Weian Deng

LSU Historical Dissertations and Theses

Parallel processing has been considered as the key to build computer systems of the future and has become a mainstream subject in Computer Science. Computer Vision applications are computationally intensive that require parallel approaches to exploit the intrinsic parallelism. This research addresses this problem for low-level and intermediate-level vision problems. The contributions of this dissertation are a unified scheme based on probabilistic relaxation labeling that captures localities of image data and the ability of using this scheme to develop efficient parallel algorithms for Computer Vision problems. We begin with investigating the problem of skeletonization. The technique of pattern match that …

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Bombesin-Induced Hypothermia At Normal Ambient Temperatures: Contribution Of The Sympathetic Nervous System., John Christopher Barton Jan 1994

Bombesin-Induced Hypothermia At Normal Ambient Temperatures: Contribution Of The Sympathetic Nervous System., John Christopher Barton

LSU Historical Dissertations and Theses

Bombesin is a tetradecapeptide first isolated from frog skin. This peptide has potent effects on core body temperature of rats when administered centrally. Bombesin-induced hypothermia at normal ambient temperatures appears to be dependent upon some pre-existent condition which may be related to nutritional status. Four experiments were conducted to examine if the pre-existing condition for bombesin-induced hypothermia at normal ambient temperatures is primarily related to modulation of sympathetic nervous system activation. Experiment I demonstrated that central bombesin resulted in hypothermia in rats tested at normal ambient temperatures under conditions of ad-libitum access to food only when injected peripherally with the …

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Akira Miyoshi's Didactic Works For Solo Piano., Naomi Noro Brown Jan 1994

Akira Miyoshi's Didactic Works For Solo Piano., Naomi Noro Brown

LSU Historical Dissertations and Theses

Akira Miyoshi (b. 1933) is a well-known composer and respected educator in Japan. His compositional output includes music for piano as well as numerous instrumental and vocal compositions. He has been commissioned to write music for important international events including the Tokyo Olympics, World's Fair, and International Music Competition. He performs and conducts his own music in one-composer recitals in addition to giving lectures, master classes, and serving as a judge in competitions. Miyoshi has taught piano and composition for many years at two prestigious music schools in Japan--Tohogakuen University and Tokyo National University of Fine Arts and Music. Through …

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The Structural Basis For Kinetic And Allosteric Differences Between Two Bacterial Phosphofructokinases., Walton Malcolm Byrnes Jan 1994

The Structural Basis For Kinetic And Allosteric Differences Between Two Bacterial Phosphofructokinases., Walton Malcolm Byrnes

LSU Historical Dissertations and Theses

The fructose 6-phosphate (Fru-6P) saturation curve for phosphofructokinase (PFK) from E. coli is sigmoidal in the presence of saturating MgATP levels, while the corresponding curve for B. stearothermophilus PFK is essentially hyperbolic. Sigmoidality can be due to apparent cooperativity arising from the kinetic mechanism of an enzyme. We have determined the kinetic mechanism of B. stearothermophilus PFK (BsPFK). BsPFK was found to obey a non rapid-equilibrium random mechanism similar to the one E. coli PFK (EcPFK) follows. Substrate inhibition by MgATP was observed. We propose that substrates bind to BsPFK through two alternative pathways, one of which is slower. The …

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Continuous Variation In Ellen Taaffe Zwilich's "Intrada", And "Generations", An Original Composition For Soprano, Tenor, And Orchestra., George Albert Benner Jan 1994

Continuous Variation In Ellen Taaffe Zwilich's "Intrada", And "Generations", An Original Composition For Soprano, Tenor, And Orchestra., George Albert Benner

LSU Historical Dissertations and Theses

This dissertation divides into two parts. The first part illustrates certain traits of Ellen Taaffe Zwilich's neo-Romantic style by analyzing a single piece, Intrada (1983) for five players. The analysis is in three main sections. The first section discusses how Zwilich's background might have influenced her post-1979 writing, particularly her interest in continuous variation through the writings of Schoenberg and her studies with Sessions, and Carter. The second section focuses on Intrada and Zwilich's use of continuous variation. This section also analyzes cyclical elements and considers various older principles of melodic and pitch recurrence while determining the form of this …

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A Description And Comparison Of Variables That Influence Recidivism Of Selected Juveniles., Martin P. Carr Jan 1994

A Description And Comparison Of Variables That Influence Recidivism Of Selected Juveniles., Martin P. Carr

LSU Historical Dissertations and Theses

Nationally, over $1.6 billion is spent incarcerating juveniles. Prevention, rather than correction is needed to reduce these costs. The cost in human lives exceeds the 56,000 incarcerated juveniles. It touches more than those who commit the offense. Victims, families of victims and families of the convicted juvenile also pay a price to one degree or another. The purpose of this study was to identify and describe variables which may impact recidivism rates of selected juveniles who were charged and have arrest records on file. The research was based upon East Baton Rouge Parish, Louisiana, juvenile arrest files from 1981 through …

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Effects Of Threat-Related Emotional Information In A Lexical Decision Task: Examination Of Cognitive And Motor Performance., Sheryl Rene Jackson Jan 1994

Effects Of Threat-Related Emotional Information In A Lexical Decision Task: Examination Of Cognitive And Motor Performance., Sheryl Rene Jackson

LSU Historical Dissertations and Theses

Recently, attention has been given to the cognitive processing of aversive emotional, or threat-related, information. Although investigations have often focused on anxiety disordered individuals, it is suggested that examination of "normal" individuals with varying levels of anxiety will increase the understanding of the cognitive processing of aversive emotional, or threat-related, information. It has been hypothesized that high anxious individuals exhibit an attentional bias toward threat-related emotional information. The response of low anxious individuals to threat-related information is unclear. Some evidence suggests that non-anxiety disordered individuals employ a mechanism that inhibits or interferes with the processing of threat-related, emotional information. The …

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William Bolcom's "Twelve New Etudes For Piano"., Henry Scott Jones Jan 1994

William Bolcom's "Twelve New Etudes For Piano"., Henry Scott Jones

LSU Historical Dissertations and Theses

This study examines William Bolcom's Twelve New Etudes for Piano as a contribution to the evolution of the concert etude for piano solo, describing them mainly from the point of view of technical requirements. Chapter One charts the course of the etude for piano solo in the twentieth century. Chapter Two looks at Bolcom's Etudes in detail, addressing the following: style and format, passage-work, leaps, chords, trills and tremolos, counterpoint, cross-rhythms, stretches, dynamics and tone, pedaling, and new techniques. In the course of the description, several areas are pointed out in which Bolcom has done something new or unusual within …

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Effects Of Chromium Picolinate On Growth And Body Composition In The Rat., Deborah Lynn Hasten Jan 1994

Effects Of Chromium Picolinate On Growth And Body Composition In The Rat., Deborah Lynn Hasten

LSU Historical Dissertations and Theses

Several human and animal studies of chromium (Cr) supplementation in the form of Cr picolinate (CrPic) have reported increases in lean body mass, often with concurrent body fat decreases. This 12-week study examined the effects of six dietary levels of CrPic (0, 75, 150, 300, 600, 1500 ppb Cr) upon the growth and body composition of the rat. Ninety male Harlan Sprague-Dawley outbred weanling rats arrived in three groups of 30 animals (referred to as Blocks 1, 2, and 3). Five animals from each block were assigned to each treatment, resulting in a 6 x 3 (treatment x block) Randomized …

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A Comparison Of Verbal And Nonverbal Relaxation Induction Techniques In Neurologically Impaired Rehabilitation Patients., Warren Turner Jackson Iii Jan 1994

A Comparison Of Verbal And Nonverbal Relaxation Induction Techniques In Neurologically Impaired Rehabilitation Patients., Warren Turner Jackson Iii

LSU Historical Dissertations and Theses

This study compared the relaxation responses of neurologically impaired rehabilitation patients during verbal and nonverbal relaxation induction protocols. Seventy inpatients undergoing rehabilitation served as voluntary participants: (a) 20 patients with right-hemisphere brain dysfunction, (b) 20 patients with left-hemisphere dysfunction, and (c) a contrast group of 30 non-neurologically impaired orthopedic/medical patients. In the first phase of the study, all subjects underwent an evaluation that involved completion of screening instruments, self-report measures, and a brief neuropsychological test battery. In the second phase of the study, all subjects underwent two successive relaxation induction protocols: (a) verbal, and (b) nonverbal. Order of presentation was …

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Factors Affecting Intended Self-Referral To An Employee Assistance Program., Paul Richard Damiano Jan 1994

Factors Affecting Intended Self-Referral To An Employee Assistance Program., Paul Richard Damiano

LSU Historical Dissertations and Theses

Using data from 256 subjects from three organizations which all had employee assistance programs (EAP), this study explored factors hypothesized to affect the likelihood for employees to self-refer to the EAP. Using both correlational data and a 2 x 2 x 2 x 5 repeated measures ANOVA, it was found that perceived confidentiality, reputation of the program, perceived problem seriousness, and type of problem (job, financial, health, psychological, or relationship) were significantly related to the intent to self-refer. There was also evidence that perceived controllability of the problem and a job performance decrement influenced the propensity to self-refer. An additional …

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Does Caffeine Have An Ergogenic Benefit On Low-Intensity Exercise Performance In A Warm Environment?, Barry Steven Cohen Jan 1994

Does Caffeine Have An Ergogenic Benefit On Low-Intensity Exercise Performance In A Warm Environment?, Barry Steven Cohen

LSU Historical Dissertations and Theses

The effect of caffeine ingestion upon endurance performance while walking at 45% VO$\sb{2\rm max}$ in a warm environment (27$\sp\circ$C, 48% rh) was examined. Eight moderately trained subjects (aged 21-25 years) walked on a treadmill on 4 separate occasions until exhaustion under 4 different treatment regimens. Two of the treatments consisted of caffeine-containing beverages, while the other 2 included non-caffeine-containing beverages. One hour prior to the start of exercise, the subjects consumed a GatorPro drink with either 5 mg/kg of caffeine, if caffeine was the randomized drink, or placebo (flour). At the start of exercise and every half hour until exhaustion, …

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