Medicine and Health Sciences Commons^™

Variability Analysis Of Discrete Cosine Transform Coefficient (Dctc) Features For Speech Processing, Bingjun Dai

Electrical & Computer Engineering Theses & Dissertations

In this research, the variability of Discrete Cosine Transform Coefficient (DCTC) features was investigated. Additionally, a new pitch-synchronous processing method was explored to increase the stability of features and to reduce window effects when compared to the regular method. The noise sources that lead to feature variability were analyzed, and different smoothing methods were tested. It was found that longer frames, frequency warping, time smoothing of the log spectrum, and DCS level time smoothing, all help reduce DCTC variability and increase classification performance. The pitch­ synchronous method was implemented with Matlab. Important processing methods, including pitch period estimation, time­ domain …

The Effects Of Dehydration And Rehydration On The One-Repetition Maximum Bench Press Of Weight Trained Males, James E. Schoffstall

Human Movement Studies & Special Education Theses & Dissertations

The purpose of this study was to examine the effects of dehydration and rehydration on the one repetition maximum (1-RM) bench press of weight trained males. The ten subjects displayed the following characteristics: 25.3 ± 3.2 years old, 85.5 ± 16.4 kilograms body mass and a 117.9 ± 24.0 kilogram base-line 1-RM. Ten subjects were tested on two separate days, with one week between each test day. The subjects were randomly assigned to begin their testing in either the A protocol or the B protocol. During the A protocol testing day, the subjects completed two one repetition maximum bench press …

Conceptual Metaphor In The Health Care Culture, Cheryl D. Glennon Dnsc, Ms, Rn

Dissertations

The conceptual metaphor has meaning only when understood within the cultural framework which gives rise to the conceptualization. The purpose of this study was to investigate the interaction of cognition (conceptual metaphor) and culture as manifest during intercultural communication in teaching-learning sessions between health care providers and patients. An ethnography of communication (Hymes, 1974; Saville-Troike, 1989) was the method employed to investigate the use of metaphor by patients, nurses and other health care professionals. Patients were viewed as a sojourner group in the health care culture; nurses and their health care partners were seen as a host group. Data were …

Depression In Mexican American Adolescence And Its Relations To Ethnic Identity And Self Esteem, Deborah Cohen Woloski

Theses and Dissertations - UTB/UTPA

This study investigated incidence of depressive symptomatology, clinical depression, and suicidal ideation in a high school sample of 1751 Mexican-American adolescents. The relations of depression, as measured by the Diagnostic Scale for Depression-26 (DSD26), self-esteem, as measured by the abbreviated Rosenberg's Self-esteem Scale and ethnic identity, as measured by the Multigroup Ethnic Identity Measure (MEIM) were analyzed. Results indicate that Mexican-American adolescents are at increased risk for depressive symptomatology and suicidal ideation. Results showed that there is no higher incidence of Major Depressive Episode (MDE) in Mexican-American adolescents but an increased risk for depressive symptomatology was found. Ethnic identity and …

Regulation Of Connexin43 By Phosphorylation In Heart Development, John C. Duncan

Loma Linda University Electronic Theses, Dissertations & Projects

Serine/threonine protein kinases have been shown to reversibly regulate cell-cell communication through gap junctions formed by connexin 43 (Cx43) (Godwin et al.7 1993). The Cx43 protein expression levels are unclear and what role phosphorylation plays in the regulation of signal transduction through these gap junctions during heart formation. Reportedly, mutations which replace potentially phosphorylatable serines within the Cx43 protein are associated with heart malformations (Britz-Cunningham et al.. 1995), highlighting the importance of determining the levels of Cx43 and the activities of PKA and PKC during heart development.

Western analysis performed on hearts from developmentally significant time points revealed principally high …

A Comparison Of Bond Strength Between Three Glass Ionomer Cements Used For The Retention Of Orthodontic Bands, Bryan C. Johnson

Loma Linda University Electronic Theses, Dissertations & Projects

The study compared the retentive bond strength of Ketac-Cem with Ultra Bond-Lok and a 3M Experimental glass ionomer cement at 1 hour and 24 hours using laser and common light cure techniques. The sample consisted of one hundred twenty sound extracted human molars divided into 5 groups: Ketac-Cem (self-cure), Ultra Band-Lok (light-cure), Ultra Band-Lok (laser cure), 3M Experimental (light-cure) and 3M Experimental (laser cure). Stainless steel orthodontic bands with buccal and lingual cleats were cemented as per manufacturer's instructions for each of the test samples. The samples were placed in water until ready for testing. The shear bond strength of …

Establishing Norms For A Mexican Group Using Ricketts, Steiner And Arnett Analyses, Mauricio Gonzalez Balut

Loma Linda University Electronic Theses, Dissertations & Projects

Most existing cephalometric analyses are based on norms for the Caucasian population. Therefore, they cannot be properly applied for Mexican or Hispanic patients. Ethnic variations in the normal positions of the maxilla and mandible influence and alter the diagnosis and treatment plan for each of the different type of malocclusions. Previous studies have addressed the difference between the Caucasian norms and the Hispanic norms, this indicates the variety of their skeletal, dental and facial features.

It is the purpose of this study to establish specific cephalometric standards for the native Mexican group, using the Steiner and Ricketts analyses along with …

Localization Of Sodium, Potassium-Adenosine Triphosphatase In The Cerebral Cortex Of Developing Rats, Maki Ujiie

Loma Linda University Electronic Theses, Dissertations & Projects

Active transport via Na⁺, K⁺-ATPase plays an important role in establishing and maintaining proper ionic gradient across all mammalian cell membranes. A strict regulation of Na⁺, and K⁺ ion levels is especially important in excitable cells such as neurons and myocytes. Inhibition of the enzyme is associated with several pathological conditions and has serious detrimental effects on cerebral cortical cells. Yet the enzyme appears to be limited in amount and distribution in newborn rats. In this study, Na_⁺, K⁺- ATPase expression and distribution in early postnatal rats were studied …

The Relationship Of The Incisive Canal To Maxillary Median Diastema, Jeffery S. Corbett

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to assess the relationship between the incisive canal and maxillary median diastema, and to identify an imaging method capable of documenting the geometry and dimensions of the incisive canal. The sample consisted of 59 dry skulls, 26 of which had a maxillary median diastema ranging in size from 0.1 mm to 2.8 mm (mean 1.0 mm, SD = 0.7 mm). Each skull had all of the permanent maxillary teeth present from first molar to first molar and lacked any apparent non-orthodontic condition that could have caused the diastema. Diastema width and canal diameter were …

A Comparison In Processing Of Alginate Orthodontic Impressions By Commercial Labs, Robert Agnetta

Loma Linda University Electronic Theses, Dissertations & Projects

Many orthodontists use commercial orthodontic laboratories for the processing of their impressions including preparation of the impression for pouring, model retrieval, final trim, and labeling. It was studied, by way of random sample survey, what materials and methods were most commonly utilized in 100 offices of members of the American Association of Orthodontics. This survey data was analyzed and used to establish a protocol to study differences in dimensions of models made from impressions that were poured immediately, versus those that were stored and picked up at the office the same day they were taken, and those that were shipped …

Characterization Of Metal-Regulated Genes In Pseudomonas Fluorescens, Melanie Pearson

Honors Theses

One side effect of today's industrialized world is increased levels of heavy metals in the environment. Many of these metals are necessary for biological function as trace elements, but at higher concentrations are toxic. Other metals, such as cadmium, are not beneficial at any level, and have only deleterious effects on living organisms. Cadmium is primarily thought to interfere with normal biological function of proteins. Human exposure to cadmium appears to primarily damage the kidneys, but may also affect the liver, lungs, immune system, and central nervous system. Bacteria, however, have developed several methods for handling toxic heavy metals: cation …

The Effects Of Personalized Dietary Education On Glycosylated Hemoglobin Levels In Adult Diabetic Patients, Lacey Gentry

MSN Research Projects

Diabetes mellitus is a complex and multifactorial disease process with numerous debilitating outcomes if improperly managed. This chronic illness requires continuing medical care and education to prevent acute exacerbations and to reduce the risk of long-term complications. The primary manifestation, hyperglycemia, can be the result of various elements. One major cause of hyperglycemia is inappropriate dietary intake which results in detrimental short- and long­ term effects. A glycosylated hemoglobin measurement can be utilized as a marker in monitoring long-term glycémie control. This quasi-experimental study examined the effect of personalized dietary education on glycosylated hemoglobin levels in adult diabetic patients. The …

Coping Mechanisms Of Older Adults With Diabetic Foot Ulcers, Mary M. Snuggs

MSN Research Projects

Diabetic foot problems are a significant cause of foot and limb amputation (Dorgan, Birke, Moretto, Patout, & Rehm, 1995). Because o f the devastating physical and psychological effects of amputation, aggressive treatment o f diabetic foot problems is warranted to prevent loss o f limb. Promotion o f effective coping is one successful method o f therapeutic treatment. According to nursing theorist Betty Neuman (1995), effective coping with external stressors is imperative for an individual’s health, harmony, and personal integrity. This study was conducted to describe the coping mechanisms o f older adults with diabetic foot ulcers. The research question …

Influence Of Psychiatric Diagnostic Training On Counseling Students’ Development Of A Model-For-Helping And Professional Identity, Jerry E. Mclaughlin

Dissertations

Over the years, numerous proposals have been made in the counselor education (CE) literature about what counseling philosophy can best lead the profession to a distinctive professional identity (Bauman & Waldo, 1998; Fong & Lease, 1994; Guterman, 1994). An issue in this debate is whether psychiatric diagnostic training forms a part of a counseling philosophy (i.e., model-for-helping) and professional identity that is more focused on client psychopathology than on normal developmental issues. This study explored how training and experience in psychiatric diagnostic categories (PDCs) influenced counselors’ development of their counseling philosophy and professional identity.

Focus-group interviews were held at four …

The Effect Of Floor Sitting Posture On Low-Back Pain, Knee Pain And Hip Pain Among Kuwaiti Men, Sameera H. Al-Jedi

Rehabilitation Sciences Theses & Dissertations

Background and Purpose. Ground resting posture is common in Kuwait and other Arab communities. Kuwaiti men gather daily, especially on weekend nights socializing in the Diwaniya. Diwaniya is a special room in every Kuwaiti house. The Diwaniya is traditionally furnished with seating cushions and pillows. Men are seated on the floor in a tailor-sitting posture for long periods of time. The tailor-sitting posture flexes the trunk. hips, and knees. The flexion position has been shown to decrease the lumbar lordosis and increase joint compression in hips and knees. However there are no studies about the effect of floor sitting …

Patellofemoral Joint Compressive Forces During Backward And Forward Running At The Same Speed, Hesham N. Alrowayeh

Rehabilitation Sciences Theses & Dissertations

A previous study found that the patellofemoral joint compressive force (PFJRF) during backward running was less than during forward running at free speed. Therefore, the purpose of this study was to compare the patellofemoral joint compressive forces during backward and forward running at the same speed. Ten runners (4 females, 6 males) between the age of 20-25 (X=22, SD=2) ran in backward and forward directions at the slow speed of 2.3 mph (1.0 m.sec^-1). Using the inverse dynamic technique the knee extensor moment and PFJRF during the slow backward and forward running were calculated. Results showed that the …

Comparison Of The Emg Activity Of The Supraspinatus And Infraspinatus Muscles During Various Closed Chain Exercises, I-Chen Lin

Rehabilitation Sciences Theses & Dissertations

Advantages of closed chain exercises used in the lower extremity have been well documented. However, the effects of closed chain exercises on the upper extremities have not been studied very much. Thus, the purpose of this research is to analyze the EMG activity of the supraspinatus and infraspinatus muscles and compare the relative amounts of activities by performing different isotonic closed chain exercises and an open chain exercise in normal subjects. The supraspinatus and infraspinatus muscles in 1 o healthy subjects were studied with fine wire, intramuscular, electromyographic electrodes while performing 5 closed chain exercises and a D2. open chain …

In Vitro Assessment Of The Toxicity Of Cocaine And Its Metabolites In The Human Umbilical Artery, Tessa L. Long

Electronic Theses and Dissertations

An in vitro model was used to assess the effect of cocaine and its metabolites on the umbilical artery. Objectives were to pharmacologically confirm the presence of adrenergic innervation using tyramine, evaluate the ability of cocaine, benzoylecgonine, norcocaine and cocaethylene to potentiate vasoconstriction by serotonin and norepinephrine, examine the ability of ketanserin to block the enhanced vasoconstriction produced by cocaine, and determine displacement of 3 H-ketanserin by serotonin, norepinephrine, tyramine and mianserin. The vasoconstrictive effect of tyramine (100 μM) was enhanced in the presence of cocaine by 257%. Vasoconstrictive effects of serotonin and norepinephrine were significantly enhanced by cocaine by …

Perceived Health Competency And Health Value, Acculturation And Obesity In A Mexican American Population, Roberto Eliud Maldonado

Theses and Dissertations - UTB/UTPA

Mexican Americans have a higher incidence of obesity than non-Hispanic whites, yet this population seems to be less concerned with maintaining an ideal body weight than non-Hispanic whites. This puts the Mexican Americans population at higher risk for illnesses associated with increased body fat and obesity. One important factor found to influence health maintenance behavior is perceived self-efficacy, or the degree to which the individual feels capable of effectively managing his or her behavioral outcome. This study examines the moderating effect of health competency and health value on body weight in individuals undergoing acculturation.

Although no significant correlations were found …

Differential Expression Of Homing-Associated Cell Adhesion Molecule, Very Late Antigen-4 And L-Selectin In Hematopoietic Progenitor Cell Trafficking Between The Marrow And Blood, Caroline Brigitte Fultz

USF Tampa Graduate Theses and Dissertations

This study addresses the hypothesis that the following cell adhesion molecules (CAMs): homing-associated cell adhesion molecule (HCAM), very late antigen-4 (VLA-4) and L-selectin play a role in the trafficking of hematopoietic progenitor cells (HPCs) between the bone marrow microenvironment and the peripheral circulation. In order to ascertain differences in CAM expression based on physiologic compartment, the expression of HCAM, VLA-4 or L-selectin per CD34⁺ myeloid progenitor cell was assessed between paired samples of blood and marrow. CAM expression was flow cytometrically quantitated in paired samples obtained from patients treated with mobilizing doses of granulocyte-colony stimulating factor (G-CSF) or from …

A Comparison Of Practice Patterns Of Nurse Practitioners In Collaborative Practice And Those In Independent Practice Arrangements, Lee Wallace

MSN Research Projects

Nurse practitioners provide health care in a variety of settings, which can be subdivided into two broad categories: collaborative practice, indicating physician and nurse practitioner practice in the same setting, and independent practice, indicating physician preceptor not in the same facility. This study’s purpose was to determine if differences exist in practice patterns of nurse practitioners in collaborative and independent practice. This descriptive, conparative study was guided by the American Nurses Association Social Policy Statement. The setting was the predominately rural state of Mississippi. The sample

Physical Fitness Perceptions And Exercise Participation Of Older Adults, Kristi J. Spruell

MSN Research Projects

The purpose of this descriptive exploratory study was twofold: to determine if older adults are exercising and to examine their perceptions of physical fitness. Nola J. Pender's Health Promotion Model provided the theoretical framework for this study. The following research questions guided the study: (1) Are older adults participating in adequate exercise?; (2) Do older adults perceive themselves as physically fit?; (3) Do older adults perceive motivators to exercise?; and (4) Do older adults perceive barriers to exercise? A convenience sample of 40 adults, ages fifty and above, was obtained from a primary care clinic in a suburban area in …

Congestive Heart Failure Clients' Knowledge Level About Self-Care Measures, Phyllis Savage

MSN Research Projects

Almost 5 million Americans are living with congestive heart failure (CHF) today with over 400,000 new cases diagnosed annually (American Heart Association, 1997; National Heart, Lung, and Blood Institute, 1996; Konstam et al., 1994). Despite medical advances, mortality rates remain high for CHF. Lack of knowledge was cited as a frequent cause of clients' noncompliance with prescribed self-care regimen. Client education has been indicated as beneficial in promoting a better self-understanding of CHF. In order to successfully provide education to CHF clients, health care providers must first be able to assess clients' prior knowledge about the condition. The purpose of …

Correlation Of Rate Of Compliance To A Prescribed Treatment Regimen With Sense Of Power Experienced By Elders With Type Ii Diabetes Mellitus, Elly Vance

MSN Research Projects

The purpose of this study was to identify the relationship between elderly diabetics' sense of power and their rate of compliance to a prescribed treatment regimen. The researcher hypothesized that there would be no significant correlation between sense of power and rate of compliance to a prescribed treatment regimen. The Health Care Practice Scale - Part A (HCPS-A) and the Health Care Practice Scale- Part B (HCPS-B) were administered to 16 Type II diabetics who were 65 years or older. Statistical analysis using Pearson r^ found no significant relationship ; therefore, the researcher failed to reject the hypothesis. The researcher …

Grief Experiences Of Widowed Women Based On Length Of Bereavement, Brenda Shelton

MSN Research Projects

Death of a spouse is a stressful life event that carries the increased threat of illness developing as a consequence. Spousal loss is a situation that primarily affects women because women usually live longer than men and most wives are younger than their husbands. As widowhood affects more women then men, there is a need for understanding patterns of grief reactions in women. The focus of this descriptive study was to compare the differences in grief experiences of widowed women based on length of bereavement. The purpose of this study was to examine the differences in grief experiences by women …

The Effect Of An Educational Intervention On Adolescents' Knowledge And Attitudes About Violence, Jean E. Szorady

MSN Research Projects

Violent injury is among the leading causes of death in adolescents. Adolescents' immaturity and underdeveloped impulse control put them at risk of acting rashly, thus at higher risk for violent injury. This significant public health problem is a preventive objective of Healthy People 2000. The purpose of this study was to examine the effects of an educational intervention on adolescents' knowledge and attitudes about violence. The nurse practitioner in a school or family clinic is in a unique position to intervene with adolescent clients using an educational intervention. Orem's Self-Care Deficit Theory served as the theoretical framework for the research. …

Knowledge And Attitudes About Hiv/Aids In An Adolescent Population, Tracey Hickman

MSN Research Projects

Adolescents are at an increased risk for contracting the human immunodeficiency virus (HIV) as evidenced by increased infection rates and the acquired immunodeficiency syndrome (AIDS) related deaths within this age group. The focus of this study was to assess the knowledge levels and attitudes of adolescents about HIV/AIDS. The theoretical framework that guided this study was Elkind (1993). Elkind (1993) believed that adolescents make decisions on such concepts as the personal fable and imaginary audience regardless of their knowledge level. Two research questions were addressed in this descriptive study : What are the knowledge levels of adolescents about HIV/AIDS? And …

Outcomes Of An Educational Program On The Knowledge Level Of Shaken Baby Syndrome Among Adolescent Babysitters, Mickey White Parks

MSN Research Projects

Shaken baby syndrome is a form of child abuse that exhibits no external sign of injury. A recent study by Starling, Holden, and Jenny (1995) indicated that approximately 3 0% of the perpetrators were nonparental child caregivers. The purpose of this study was to determine if there were differences in the knowledge level of shaken baby syndrome among adolescent babysitters before and after an educational intervention. The nursing theory. Modeling and Role-Modeling, was used to guide this study. Data were collected from a convenience and network sample consisting of 21 adolescents aged 12 to 17 years who reside in suburban …

Impact Of A Multidisciplinary Education Class On Knowledge And Health-Promoting Behaviors In Persons With Type 2 Diabetes Mellitus In Rural Mississippi, Carmen Leigh Parks

MSN Research Projects

Prevalence rates of known diabetes mellitus continue to increase in the United States. However, studies show that people can reduce their risks of long-term complications by maintaining adequate blood sugar control. Good metabolic control, however, can be very difficult for persons with diabetes because it requires knowledge, motivation, lifestyle adjustments, close monitoring, and ongoing support from a health care team. The purpose of this quasi-experimental pretest/posttest study was to determine the impact of a multidisciplinary education class on knowledge and health-promoting behaviors in persons with type 2 diabetes in rural Mississippi. Pender's Health Promotion Model was used as the theoretical …

Screening For Domestic Violence By Nurse Practitioners In The Primary Care Setting, Patricia A. Plant

MSN Research Projects

Domestic violence produces major health care problems for women. The prevalence and serious nature of this problem mandates recognition and intervention. Research has demonstrated that health care providers either overlook or fail to recognize or address potential domestic violence issues and situations during health care encounters. This descriptive study was designed to examine the screening practices of nurse practitioners for domestic violence certified and practicing in Louisiana. The theoretical framework for the research was based on the Health Promotion Model (Pender, 1987), which focuses on the integration of health-promoting behavior into lifestyles. The research question for this study was as …