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2006

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Analysis Of Bioengineered Concrete For Use In A Submerged Reef Type Breakwater, Tyler Ray Ortego Jan 2006

Analysis Of Bioengineered Concrete For Use In A Submerged Reef Type Breakwater, Tyler Ray Ortego

LSU Master's Theses

The oysterbreak is a method of growing an oyster reef into a wave attenuating device. A study was conducted to determine an optimal material for the oysterbreak. As oysters grow on the oysterbreak, wave energy in the lee of the structure is reduced. It was predicted that more rapid oyster growth would lead to a more rapid reduction of wave energy. Louisiana is losing coastal marshes at an alarming rate. Wave action from storms erodes sediments from Louisiana's shorelines and barrier islands. Structures such as the oysterbreak may be used to protect Louisiana’s fragile shorelines. A material for the oysterbreak …

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Posttraumatic Growth And Ptsd Symptomatology Among Colorectal Cancer Survivors: The Impact Of Emotional Expression And Cognitive Processing, John M. Salsman Jan 2006

Posttraumatic Growth And Ptsd Symptomatology Among Colorectal Cancer Survivors: The Impact Of Emotional Expression And Cognitive Processing, John M. Salsman

University of Kentucky Doctoral Dissertations

There are substantial data exploring the link between religiosity and health, yet there is no consensus regarding the appropriate measurement tool for assessing religiosity in health psychology settings. The purpose of this study was to identify a set of items that could serve as a reliable and valid proxy measure of religiosity. Participants included 251 (M=19.02; range = 17-25) young adults who completed self-report measures of religiosity (Intrinsic-Extrinsic/Revised, Quest Scale, Faith Maturity Scale), psychological distress (SCL-90-R), and personality (NEOPI-R). Individual item pools for religiosity were developed by identifying significant correlations between each of the religiosity measures and the SCL-90-R items. …

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Examination Of Blood Flow Using Vasoconstrictor And Vasodilator Stimuli: Stability And Reproducibility, Robert B. Lestage Jan 2006

Examination Of Blood Flow Using Vasoconstrictor And Vasodilator Stimuli: Stability And Reproducibility, Robert B. Lestage

LSU Master's Theses

Blood flow distribution relies on the vasculature’s ability to vasodilate and vasoconstrict throughout the body. Most previous research has focused on only one of these abilities, either vasodilation or vasoconstriction. For example, Thijssen et al. (2005) focused their research on vasodilation by studying reactive hyperemia, while Kinuyoshi et al. (2003) studied the possible vasoconstriction effect with increasing muscle sympathetic nerve activity. The purpose of this study was to assess vascular function using a variety of stimuli to potentially learn more about overall vascular health, while determining the stability and reliability of blood flow measurements using strain gauge plethysmography. Measures of …

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Grammatical Morphology Of Children Reared In Poverty: Implications For Specific Language Impairment, Sonja L. Pruitt Jan 2006

Grammatical Morphology Of Children Reared In Poverty: Implications For Specific Language Impairment, Sonja L. Pruitt

LSU Doctoral Dissertations

In the current study, the past tense systems of children reared in poverty were examined. Guiding the study was Rice and Wexler’s (1996) Extended Optional Infinitive (EOI) account, which makes a number of predictions about the past tense systems of children with specific language impairment (SLI). The goal of the current study was to determine if these predictions apply to other children with weak language systems, such as those reared in poverty. The participants included 15 six-year-olds from low-income backgrounds (LSES), 15 age-matched peers from middle-income backgrounds (AM), and 15 language-matched peers from middle-income backgrounds (LM). All were African American …

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Efficacy Of Nutrition Education Lessons Targeting A Group Of Low-Income Elderly, Gabriela M. Viteri Jan 2006

Efficacy Of Nutrition Education Lessons Targeting A Group Of Low-Income Elderly, Gabriela M. Viteri

LSU Master's Theses

Nutrition education has the potential not only to increase nutrition knowledge and, potentially, healthy behaviors, among the elderly, but also to reduce the need for health and social services. The nutrition component described herein is part of an overall wellness program that focuses on increasing physical activity and healthy dietary behaviors among participants. We completed a four month nutrition intervention in a group of 33 low income elderly at the Leo Butler Center (LBC) (n=20) and Catholic Presbyterian Apartments (CPA) (n=13) in the fall of 2005 in Baton Rouge, LA. The Social Cognitive Theory (SCT) was used as the theoretical …

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Civic Journalism And Community Newspapers: Opportunities For Social And Civic Connections, Amy Burroughs Jan 2006

Civic Journalism And Community Newspapers: Opportunities For Social And Civic Connections, Amy Burroughs

LSU Master's Theses

This study sought to fill in a gap in civic journalism research by considering its implications for community newspapers, those small, locally oriented publications that serve rural and suburban communities throughout the country. In particular, this study posed the argument that such newspapers may have advantages in pursuing civic journalism, and that these approaches may especially benefit newspapers in high-growth communities. This study relied heavily on the language of theorists who describe journalism as a public conversation, the quality of which - its usefulness for readers as citizens and members of a community - the press can either help or …

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Differential Expression And Detection Of Transcripts In Sweetpotato (Ipomoea Batatas (L.) Lam.) Using Cdna Microarrays, Cecilia E. Mcgregor Jan 2006

Differential Expression And Detection Of Transcripts In Sweetpotato (Ipomoea Batatas (L.) Lam.) Using Cdna Microarrays, Cecilia E. Mcgregor

LSU Doctoral Dissertations

Microarray protocols were developed for sweetpotato (Ipomoea batatas (L.) Lam.) and then used to study issues of importance in sweetpotato physiology and production. The effect of replication number and image analysis software was compared with results obtained by quantitative real-time PCR. The results indicated that reliable results could be obtained using six replicates and UCSF Spot image analysis software. These methodologies were employed to elucidate aspects of sweetpotato development, physiology and response to virus infection. Storage root formation is the most economically important process in sweetpotato development. Gene expression levels were compared between fibrous and storage roots of the cultivar …

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Do Overweight Inactive Parents Raise Overweight Inactive Children? Examination Of The Influence Of The Home Environment On Weight Status Of Children Over Time, Emily York-Crowe Jan 2006

Do Overweight Inactive Parents Raise Overweight Inactive Children? Examination Of The Influence Of The Home Environment On Weight Status Of Children Over Time, Emily York-Crowe

LSU Doctoral Dissertations

The primary aim of this study was to test whether body mass index (BMI), psychosocial, and behavioral parental variables were associated with similar variables in children at baseline, and whether these variables also served as significant predictors of overweight status in children after two years. While there have been several cross-sectional studies examining the impact of parental behaviors and characteristics on similar variables in children, and several longitudinal studies predicting weight status, BMI percentile, and risk factors of disease in children over time, there is a paucity of research that has identified (cross-sectionally) and then tested (longitudinally) significant parental variables …

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Use Of Polyhydroxyalkanoates For Denitrification In Recirculating Aquaculture Systems, Maria Teresa Gutierrez-Wing Jan 2006

Use Of Polyhydroxyalkanoates For Denitrification In Recirculating Aquaculture Systems, Maria Teresa Gutierrez-Wing

LSU Doctoral Dissertations

Increasing demand of aquacultural products is driving the industry toward more intensive culture practices. Aquacultural operations are constrained by limitations on the availability high quality waters and regulatory pressures on the discharges. Recirculating systems can address these issues by reducing the amount of water required in the operation. Closed systems are especially suited where biosecurity is important. In closed systems, nitrate accumulates, limiting the time the water can be reused. In marine inland systems, water reuse reduces the cost of salt for make up water. To increase the water reuse time, some form of nitrate removal process must be incorporated …

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Optical Control Plane: Theory And Algorithms, Stefan Alexandru Pascu Jan 2006

Optical Control Plane: Theory And Algorithms, Stefan Alexandru Pascu

LSU Doctoral Dissertations

In this thesis we propose a novel way to achieve global network information dissemination in which some wavelengths are reserved exclusively for global control information exchange. We study the routing and wavelength assignment problem for the special communication pattern of non-blocking all-to-all broadcast in WDM optical networks. We provide efficient solutions to reduce the number of wavelengths needed for non-blocking all-to-all broadcast, in the absence of wavelength converters, for network information dissemination. We adopt an approach in which we consider all nodes to be tap-and-continue capable thus studying lighttrees rather than lightpaths. To the best of our knowledge, this thesis …

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Self-Regulation In Physical Activity: Understanding Decisions That Older Adults Make, Janene Marie Grodesky Jan 2006

Self-Regulation In Physical Activity: Understanding Decisions That Older Adults Make, Janene Marie Grodesky

LSU Doctoral Dissertations

Physical activity and exercise have been shown to strongly contribute to an extended quality of life. Half of all physical declines in aging can be prevented by engaging in adequate levels of daily physical activity. Only one in four older adults over the age of 65 participates in regular physical activity. There are various factors that have been identified in this population that influence physical activity behaviors including gender, ethnicity, education, and socioeconomic status. Though important for providing baseline data on older adults, these descriptions do not fully explain why or why not this population engages in physical activity; or …

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The Multiple Dimensions Of The Interfirm Network: The Critical Sources Of Product Innovation, Thongchai Srivardhana Jan 2006

The Multiple Dimensions Of The Interfirm Network: The Critical Sources Of Product Innovation, Thongchai Srivardhana

LSU Doctoral Dissertations

This dissertation examines the impacts of interfirm variables on both invention and commercialization activities, following Greve’s (2003) suggestion that innovation research will be enriched if more studies integrate invention and commercialization activities to understand the entire innovation development process. Utilizing two established theoretical perspectives—organizational learning and institutional theory—six sets of hypotheses are developed containing the following interfirm variables: 1) direct and indirect ties, 2) strength of direct ties, 3) structural holes, 4) prominence of direct partners, 5) exploration and exploitation partners, and 6) horizontal and vertical networks. The dissertation also predicts that these interfirm variables would contribute to either invention …

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The Relationship Between Mania And Feeding/Mealtime Behavior Problems Among Persons With Intellectual Disability, Rinita Laud Jan 2006

The Relationship Between Mania And Feeding/Mealtime Behavior Problems Among Persons With Intellectual Disability, Rinita Laud

LSU Doctoral Dissertations

This study represents the first to assess whether a relationship between mania and feeding/mealtime behavior problems exists in individuals with ID. Participants were compared across three groups (manic, non-manic psychiatrically impaired, and controls) on subscales and items of the Screening Tool for fEeding Problems (STEP). An attempt was made to assess for differences in problematic feeding behavior. Individuals in the manic group exhibited clinically significant symptoms of mania (n = 18), those in the non-manic psychiatrically impaired group exhibited symptoms of psychopathology other than mania (n = 18), and those in the control group did not exhibit symptoms of mania …

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Site-Based Technology Facilitators: Catalysts For Achieving Teacher Technology Proficiency In K-12 Classrooms, Janet Giandelone Broussard Jan 2006

Site-Based Technology Facilitators: Catalysts For Achieving Teacher Technology Proficiency In K-12 Classrooms, Janet Giandelone Broussard

LSU Doctoral Dissertations

The primary purpose of this study was to investigate the extent to which professional development implemented by a school-based instructional technology facilitator impacted the technology proficiency of teachers in SCHOOLTech sites. A second purpose was to identify the types and frequencies of professional development implemented by school-based facilitators in SCHOOLTech sites, as well as, in five case study sites that had shown increases in teacher technology proficiency. The final purpose was to determine if there was a significant difference in student achievement levels between SCHOOLTech and non SCHOOLTech schools. Investigation was carried out through a within-stage mixed model design requiring …

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Molecular Analysis Of Vibrio Vulnificus Phase Variants And Characterization Of A New Biofilm-Proficient Rugose Phenotype, Brenda L. Grau Jan 2006

Molecular Analysis Of Vibrio Vulnificus Phase Variants And Characterization Of A New Biofilm-Proficient Rugose Phenotype, Brenda L. Grau

LSU Doctoral Dissertations

Vibrio vulnificus is a marine bacterium capable of causing severe and fatal illness in susceptible people. The primary virulence factor is a capsular polysaccharide (CPS) that allows the bacteria to evade the host immune system. Two phenotypic forms were previously known to exist, opaque (virulent) and translucent (avirulent), and had been shown to undergo spontaneous phase variation, each switching to the other phenotype. Provided here is the first report of a third phenotype, rugose. The rugose variant is dry and wrinkled compared to the smooth colony morphology of the opaque and translucent forms. Both opaque and translucent strains produce rugose …

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Examination Of The Constructs Of The Transtheoretical Model In Patients With Heart Failure: A Focus On Physical Activity Readiness, Tracie Rena Parish Jan 2006

Examination Of The Constructs Of The Transtheoretical Model In Patients With Heart Failure: A Focus On Physical Activity Readiness, Tracie Rena Parish

LSU Doctoral Dissertations

The goal of this research was to gain greater understanding about the management of heart failure patients. A particular focus was to evaluate exercise tolerance and behavior. The major findings of the first study included: (1) evidence that few heart failure patients receive adequate information regarding physical activity; (2) performance on a six-minute walk test were ~42% lower, and SF-36 scores were also lower in heart failure patients compared to controls; (3) stability in hemodynamic measures and distance walked on the 6-minute walk test were adequate, and (4) home exercise resulted in 19% improvement in maximum walking distance and 30% …

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Mindfulness Meditation: Creative Musical Performance Through Awareness, Sheri Oyan Jan 2006

Mindfulness Meditation: Creative Musical Performance Through Awareness, Sheri Oyan

LSU Doctoral Dissertations

Musicians spend countless hours practicing their instruments over the course of a lifetime. These hours are primarily spent learning how to manipulate the instrument through scale studies, etudes, and repertoire. However, despite intense and diligent effort, many musicians find themselves unable to perform for an audience without some kind of interruption in creativity in the form of mental and/or physical distractions. The symptoms of such distractions can include heart palpitations, muscle tension, shaking, feelings of fear and panic, and an inability to focus on the task at hand. The presence of these symptoms, typically referred to as “performance anxiety,” is, …

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Evaluation On Antioxidant Activities Of The Soybean Oils And Gums, Xianglong Yuan Jan 2006

Evaluation On Antioxidant Activities Of The Soybean Oils And Gums, Xianglong Yuan

LSU Master's Theses

In this study crude soy oil was extracted from the soy flour by hexane solvent. The crude oil was refined using a refining procedure similar to the one in edible oil industries, which included degumming, neutralizing, and bleaching. As the result, the eight groups of the oils and the gums were obtained. The compositions of fatty acids and tocopherols in the eight groups of samples were analyzed using GC-FID and HPLC, respectively. The antioxidant activities of the samples were analyzed by two chemical models, cholesterol and DHA. The results showed that ã- and ä-tocopherols may not be the main antioxidants …

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Media Framing Of Prescription Drug Coverage Following A Recall, Rebecca Ann Hotard Jan 2006

Media Framing Of Prescription Drug Coverage Following A Recall, Rebecca Ann Hotard

LSU Master's Theses

Direct-to-consumer advertising of prescription drugs receives significant attention from academic researchers. Advertising, however, is not the only way prescription drugs are discussed in the public sphere. Many Americans learn about science through mass media. Additionally, researchers believe readers place more trust in editorial content than in advertisements. This study took a quantitative and qualitative approach to content analysis of prescription drug coverage to examine the effects of the highly publicized and controversial Vioxx recall on the news. Significant changes in framing, drugs mentioned, and prominence of story placement were shown. There were no changes in sources used in prescription drug …

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Design And Test Of A Displacement Workspace Mapping Station For Articular Joints, Michael Daly Guillet Jan 2006

Design And Test Of A Displacement Workspace Mapping Station For Articular Joints, Michael Daly Guillet

LSU Master's Theses

In 2003, 267,000 Americans received total knee replacements prohibiting high impact athletics for the remainder of a patient’s life. A better understanding of the movement and constraint of the knee is necessary to provide more realistic motion of or possibly eliminate the need for joint prosthetics. Fixed Orientation Displacement Workspaces (FODW) can be applied to study the relationship of the passive constraint system and six (6) degree of freedom (DOF) movement of the human knee. A FODW consists of the volume of possible positions the tibia/fibula can occupy relative to a fixed femur without changing the relative orientation of the …

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Factors Which Influence Client Satisfaction With The Services Of Community Development Corporations, Shanta Harrison-Proctor Jan 2006

Factors Which Influence Client Satisfaction With The Services Of Community Development Corporations, Shanta Harrison-Proctor

LSU Doctoral Dissertations

The primary purpose of this study was to determine factors which influence client satisfaction with the services of community development corporations (CDCs) in metropolitan regions of Louisiana. The CDCs were evaluated based on five specific criteria: housing, social services, workforce development, educational enrichment, and community outreach. The objectives addressed were: description of clients, levels of client satisfaction, and relationships between satisfaction and selected demographic characteristics. The instrument used in this study was a researcher-designed survey questionnaire used to collect client information. It was comprised of two sections – demographics and client satisfaction. The target population for this study was adult …

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The Changing Relationships Of Women Helping Women: Patterns And Trends In Domestic Violence Advocacy, Jennifer Rose Wies Jan 2006

The Changing Relationships Of Women Helping Women: Patterns And Trends In Domestic Violence Advocacy, Jennifer Rose Wies

University of Kentucky Doctoral Dissertations

This research explores the themes of participation and professionalization as they intersect with power in domestic violence advocacy by using a case study from one region in Kentucky. Throughout this dissertation, I investigate the ways political and economic pressures influence local domestic violence advocates and the ways these macro-level pressures influence 1) an advocate's level of participation in the organization and 2) a transition in social service provision to a professional model of advocacy. The research illustrates that the nature of domestic violence service provision is changing in the United States as a result of the increasingly privatized nature of …

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Level Of Youth Voice In The Decision-Making Process Within The 4-H Youth Development Program As Perceived By State 4-H Program Leaders, State 4-H Youth Development Specialists, And 4-H Agents/Educators, Todd Anthony Tarifa Jan 2006

Level Of Youth Voice In The Decision-Making Process Within The 4-H Youth Development Program As Perceived By State 4-H Program Leaders, State 4-H Youth Development Specialists, And 4-H Agents/Educators, Todd Anthony Tarifa

LSU Doctoral Dissertations

This study aimed at determining the level of inclusiveness of youth voice in the decision-making process in the 4-H youth development program. It described the 4-H program’s position on youth voice among State 4-H Program Leaders, 4-H State Youth Development Specialists, and 4-H Youth Agents/Educators. The information gathered was utilized in identifying the level of inclusiveness of youth voice in the decision-making process to better understand how to suit youth’s needs, identify promising practices, and barriers. Three underlying constructs were identified that represented State 4-H Program Leader’s, 4-H Youth Development Specialist’s, and 4-H Agent’s/Educator’s personal views on youth voice in …

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Information System Contextual Data Quality: A Case Study, Daniel Lee Davenport Jan 2006

Information System Contextual Data Quality: A Case Study, Daniel Lee Davenport

University of Kentucky Doctoral Dissertations

This dissertation describes a case study comparing the effectiveness of twoinformation systems that assess the quality of surgical care, the National SurgicalQuality Improvement Program (NSQIP) and the University HealthSystemConsortium Clinical Database (UHCCD). For the comparison, it develops aframework for assessing contextual data quality (CDQ) from the decision maker'sperspective. The differences in quality assessment systems to be studied areposited to be due to the differing contexts in which the data is encoded,transformed and managed impacting data quality for the purpose of surgicalquality assessment.Healthcare spending in the United States has risen faster than the rate of inflationfor over a decade and currently …

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Factors Related To The Developmental Experiences Of Youth Serving As Louisiana 4-H Camp Counselors, David Nathan Carter Jan 2006

Factors Related To The Developmental Experiences Of Youth Serving As Louisiana 4-H Camp Counselors, David Nathan Carter

LSU Doctoral Dissertations

The purpose of this study was to investigate the developmental experiences of Louisiana high-school-aged 4-H youth who volunteer as counselors at Louisiana 4-H summer camps. A total of 288 counselors from 10 different camping sessions participated in the study from June through August of the summer of 2006. The Youth Experiences Survey 2.0 and Developmental Experience Survey were utilized to measure the personal characteristics and developmental experiences of 4-H camp counselors. The Youth Experiences Survey 2.0 was developed by Hansen and Larson of the University of Illinois, Urbana-Champaign and the Developmental Experience Survey was developed by the researcher. Results from …

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The Effects Of Perceptions On Consumer Acceptance Of Genetically Modified (Gm) Foods, Jae-Hwan Han Jan 2006

The Effects Of Perceptions On Consumer Acceptance Of Genetically Modified (Gm) Foods, Jae-Hwan Han

LSU Doctoral Dissertations

This study investigates the effects of risk/benefit beliefs on consumer purchase intentions for genetically modified (GM) foods. A random, national, mail survey is conducted. Three main problems are addressed in the study. The first problem addressed is to analyze the relationship between consumers risk/ benefit beliefs regarding GM foods, and their willingness to buy GM crop and meat products. The second problem deals with linkages between a consumer’s risk/benefit beliefs about GM foods and willingness to pay (WTP) for GM foods with a benefit disclosure. The third problem addressed is to test a causal relationship between knowledge and trust toward …

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A Novel Yogurt Product With Lactobacillus Acidophilus, Senthil Ganesh Jan 2006

A Novel Yogurt Product With Lactobacillus Acidophilus, Senthil Ganesh

LSU Master's Theses

Health benefits of Lactobacillus acidophilus include providing immune support for infections or cancer, providing a healthy replacement of good bacteria in the intestinal tract following antibiotic therapy, reducing occurrence of diarrhea in humans, aiding in lowering cholesterol and improving the symptoms of lactose intolerance. Consumer demand exists for new dairy products. There are several types of yogurt like stir curd, set curd and drinkable yogurt and they all need to be refrigerated. Moreover there are very few dairy products that can be stored at room temperature and not many dairy foods are finger foods. A novel yogurt product like a …

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Consumer Expectation Formation In Health Care Services: A Psycho-Social Model, Kenneth Randall Russ Jan 2006

Consumer Expectation Formation In Health Care Services: A Psycho-Social Model, Kenneth Randall Russ

LSU Doctoral Dissertations

A psycho-social model of consumer expectation formation in a health care services context was developed and tested. A field study involving obstetrical patients (n=171) at a large women’s specialty hospital in the southeast was conducted. Initial support for the structural model which posits that consumer expectations in health care services are multidimensional involving role, process, outcome, and service quality was found. Furthermore, the research identified that the uncertainty of a health service encounter may cause certain consumer segments to choose coping strategies and expectation processes based on their locus of control orientation from along a continuum ranging from “approach-active” to …

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Evaluation Of An Amperometric Biosensor For The Detection Of Escherichia Coli O157:H7, Danyelle Denise Small Jan 2006

Evaluation Of An Amperometric Biosensor For The Detection Of Escherichia Coli O157:H7, Danyelle Denise Small

LSU Master's Theses

Escherichia coli O157:H7 contamination is a major hazard in the water supply, causing outbreaks of disease. Conventional methods of E. coli O157:H7 detection usually takes 1-2 days and require hands-on preparation. There is a need to develop a rapid, inexpensive means of detecting the organism. The amperometric biosensor technology has achieved success in the area of metabolite detection. In this study, a bench scale amperometric biosensor was investigated to rapidly detect Escherichia coli O157:H7. The amperometric biosensor consisted of a power source, Clark electrode, autoranging picoammeter, and fabricated polyvinyl chloride (PVC) outer insert with nitrocellulose membrane and attached horseradish peroxidase …

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Rediscovering The Delta A Reassessment Of The Linkages Between Poverty, Economic Growth And Public Policy Using Geographically Weighted Regression Analysis, Dominique Duval-Diop Jan 2006

Rediscovering The Delta A Reassessment Of The Linkages Between Poverty, Economic Growth And Public Policy Using Geographically Weighted Regression Analysis, Dominique Duval-Diop

LSU Doctoral Dissertations

The nineties have witnessed broad economic growth and prosperity throughout the nation, with improvements in all major indicators of economic well-being. Yet, many rural and urban regions continued to experience economic distress during this period. At the same time, investments in infrastructure, human capital and poverty relief continue to be targeted to these failing areas. This work examines trends in demographic indicators, economic growth and federal funding experienced between 1990 and 2000 in the federally designated Mississippi Delta region in order to answer the following questions. What impact does federal funding have on poverty in the Mississippi Delta region overall? …

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