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Automated Classification Of Eeg Signals Using Component Analysis And Support Vector Machines, Priya Balasubramanian

Masters Theses

Epileptic seizures are characterized by abnormal electrical activity occurring in the brain. EEG records the seizures demonstrating changes in signal morphology. These signal characteristics, however, differ between patients as well as between different seizures in the same patient. Epilepsy is managed with anti-epileptic medications but in some extreme cases surgery might be necessary. Non-invasive surface electrode EEG measurement gives an estimate of the seizure onset but more invasive intra-cranial electrocorticogram (ECoG) are required at times for precise localization of the epileptogenic zone.

The epileptogenic zone can be described as the cortical area targeted for resection to render the patient symptom …

Reproductive Health Education In Nctb Curriculum And Text Books: A Critical Review, Salma Akhter, Shah Shamim Ahmed, Muhammad Salahuddin

Education, Health & Behavior Studies Student Publications

The Education Policy-2010, paved the way to introduce Reproductive Health (RH) as part of curricula of few selected subjects for the secondary school children in Bangladesh, which can be considered as a first step in the right direction. Consequently subjects like Physical Education and Health and Home Science has been chosen to incorporate some aspects of RH for the students of classes VI-VIII, and Science are for the students of classes IX-X. This article aimed to explore, examine and review critically to what extent incorporation has taken place and whether this has fulfilled the learning needs of the adolescent groups …

Selective Indicators For Optical Determination Of Disease Biomarkers, Lovemore Hakuna

Dissertations and Theses

The most abundant biological thiols, homocysteine (Hcy), cysteine (Cys) and glutathione (GSH) have been the subject of intense research due to their association with a wide range of diseases. They play a key role in maintaining the redox status of biological systems. Selective detection methods for these thiols are challenging due to their similar structures and properties. Current commercially available detection methods use separations, fragile and expensive enzymatic or immunogenic materials and complex instrumentation. This has led to a global effort towards developing simple and inexpensive optical probes and indicators selective for specific biological thiols.

Highly selective chemical probes and …

A Hazard Assessment And Proposed Risk Index For Art, Architecture, Archive And Artifact Protection: Case Studies For Assorted International Museums, Clara Jeanene Kirk

Graduate Theses and Dissertations

This study proposes a hazard/risk index for environmental, technological, and social hazards that may threaten a museum or other place of cultural storage and accession. This index can be utilized and implemented to measure the risk at the locations of these storage facilities in relationship to their geologic, geographic, environmental, and social settings. A model case study of the 1966 flood of the Arno River and its impact on the city of Florence and the Uffizi Gallery was used as the index focus. From this focus an additional eleven museums and their related risk were assessed. Each index addressed a …

The Sacrality Of The Mountain, Manuel Rivera Espinoza

Graduate Theses and Dissertations

In this thesis I explore the conception of the mountain as a "sacred space" based on the definition provided by Mircea Eliade in The Sacred and The Profane and other works. I recognize three major elements in Eliadean sacral spatiality: a) order and orientation b) liminality and c) reality. Using various sources but mainly the oracle bones inscriptions, the Yugong ("Tributes of Yu") of the Shujing ("Book of Documents") and the Shanjing ("Classic of Mountains") of the Shanhaijing ("Classic of Mountains and Seas"), I demonstrate how the three basic components of sacrality are to be found in each of the …

Protein Turnover In Broiler, Layers, And Broiler Breeders, Karen Vignale Lake

Graduate Theses and Dissertations

Protein turnover in skeletal tissue for broiler breeders has shown to increase at sexual maturity and then decline with increased egg production. Regarding broiler chickens the industry is facing two situations that need to be clarified: the appearance of white stripes in birds over 56 days of age and the positive effect in breast meat yield that supplementation of 25OH-D3 is causing. A series of studies were conducted to determine the effect of sexual maturity in protein turnover in broiler breeders and laying hens and to understand the effect of 25OHD3 in breast meat yield in broiler chickens and why …

Online Detection Of Outliers And Structural Breaks Using Sequential Monte Carlo Methods, Richard Wanjohi

Graduate Theses and Dissertations

Outliers and structural breaks occur quite frequently in time series data. Whereas outliers often contain valuable information

about the process under study, they are known to have serious negative impact on statistical data analysis. Most obvious effect is model misspecification and biased parameter estimation which results in wrong conclusions and inaccurate predictions. Structural time series consist of underlying features such as level, slope, cycles or seasonal components. Structural breaks are permanent disruptions of one or more of these components and might be a signal of serious changes in the observed process.

Detecting outliers and estimating the location of structural breaks …

Evaluation Of Phytate And Phytase Interactions And Phytase Phase-Feeding On Bird Performance, Bone Characteristics And Meat Quality In Young Growing Broilers, Chance L. Williams

Graduate Theses and Dissertations

Two trials were performed using one-day-old male Cobb x Cobb 500 broilers to determine how dietary phytate and phytase levels as well as phytase phase feeding impacted bird performance parameters, tibia characteristics, and malonaldehyde (MDA) content of the liver, breast and thigh tissues. The first experiment consisted of 1,008 birds randomly placed in 48 floor pens within two commercial broiler houses at the Applied Broiler Research Farm (ABRF; 21 birds per pen; 0.76 ft2 per bird). A 2 X 3 factorial design was used with two levels of dietary phytate (0.21 and 0.31 %) and three levels of phytase supplementation …

Thermal Analysis, Parasitic Extraction, And Wirebond Reliability Studies Of Power Electronic Modules, Shilpa Prabhudeva

Graduate Theses and Dissertations

This thesis research investigates thermal performance, parasitic extraction and wirebond/encapsulation reliability of power electronic modules. Thermal performance is critical to the power electronic modules. As such, thermal analysis is an important part of the power electronic module design process. Several cases are studied on generalized power modules with a full bridge layout. A database is built based on these results. The studies are performed using SolidWorks thermal simulation tool. The database involves several parameters such as power dissipation, maximum junction temperature, ambient temperature, convection coefficient required to cool the module, size of the baseplate, heat-sink size, substrate size, spacing between …

Posttraumatic Outcome Of Intimate Partner Violence: An Examination Of Risk Factors, Joye L. Henrie

Graduate Theses and Dissertations

Not all individuals who experience intimate partner violence (IPV) victimization experience clinically significant negative outcomes following IPV exposure. For those that do experience negative outcomes, researchers need to identify the mechanisms through which they develop and the manner in which negative symptoms may develop differentially across individuals. This paper provides a review of risk factors associated with negative outcomes following IPV victimization. Accumulated lifetime maltreatment experiences and maladaptive cognitions are both proffered as potential risk factors for Post-traumatic Stress Disorder (PTSD) outcomes following IPV exposure. A community sample (N = 244) of adult females was recruited to assist in elucidating …

Applications Of A New Geodata Crawler For Landscape Ecology: From Mapping Natural Stream Hydrology To Monitoring Endangered Beetles, Douglas Ryan Leasure

Graduate Theses and Dissertations

An investigation of endangered American burying beetle (Nicrophorus americanus) ecology led to development of a Geodata Crawler with applications in eco-hydrology. Geodata Crawler includes a national GIS (geospatial information systems) database with layers that quantify climate, land cover, soils, human development, and other attributes of the biosphere. For user-locations in the continental United States, Geodata Crawler can rapidly tabulate site-specific statistics within automatically delineated sample areas: points, site radii, watersheds, and riparian zones, among others. Geodata Crawler supported a multi-scale analysis of N. americanus habitat at a military installation in western Arkansas to produce a Landsat-based monitoring tool. Royle's N-mixture …

Designing Magnetically Responsive Ultrafiltration Membranes, Robert William Dong

Graduate Theses and Dissertations

Ultrafiltration (UF) membranes developed out of a need for protein separation processes. Currently, they are used in a variety of industries ranging from food manufacturing to pharmaceuticals for two main purposes: concentration, separation, and buffer exchange. UF membrane processes in product streams undergo frequent use and like all membrane processes experience a gradual decline in performance due to fouling phenomena both irreversible and reversible. Ultimately, performance declines to a point where the UF membrane needs to be replaced. Frequent replacement of UF membranes is detrimental to major industries that require high product throughput using UF processes. Thus, it is important …

Estimating The Efficiency Of Four-Year Public Master's Universities In Arkansas Using Data Envelopment Analysis, Blake R. Decker

Graduate Theses and Dissertations

For the fourth time in the past 20 years, the state of Arkansas has implemented a performance-funding program. Although directly referenced in the title of Act 1203 of 2011, the implemented performance-funding program does not include a measure of how efficiently institutions are converting their inputs into outputs. The purpose of this study was two-fold: (1) to examine, through the conceptual framework of agency theory, why the state of Arkansas adopted performance funding policy after experiencing three adopt-implement-abandon cycles in the past 20 years, and (2) to estimate the efficiency of four-year public Master's universities in Arkansas in achieving one …

Incarcerating Exceptional Pupils: Is There A School-To-Prison Pipeline In Eastern Oklahoma?, Brett Alan Fitzgerald

Graduate Theses and Dissertations

The school-to-prison pipeline metaphor represents an educational environment that allows public schools to push many at-risk children out of school and into the juvenile justice system or even worse, the adult criminal justice system (Wald and Losen, 2003; Lynn, 2010; Tuzzolo and Hewitt, 2006). The purpose of this study is to examine whether a school-to-prison pipeline exists in eastern Oklahoma, and if so, to better understand the characteristics of the public schools that may be contributing to it. The school-to-prison pipeline metaphor guided three research questions regarding whether certain public schools in eastern Oklahoma referred greater percentages of their students, …

Switchgrass Cultivar, Harvest Frequency, Fertilizer Source, And Irrigation Effects On Near-Surface Soil Properties In West-Central Arkansas, Alayna A. Jacobs

Graduate Theses and Dissertations

Switchgrass (Panicum virgatum L.) has been identified as a model bioenergy feedstock crop and is expected to become an important feedstock for future renewable fuel generation. Agronomic management combinations that maximize monoculture switchgrass yield are generally well understood; however, little is known about corresponding effects of differing switchgrass management combinations on near-surface soil properties. The objective of this research was to determine the residual near-surface soil property effects of three years (2008 to 2011) of consistent management combinations to maximize switchgrass biomass production, including cultivar (‘Alamo’ and ‘Cave-in-Rock’), harvest frequency (1-cut and 2-cut systems per year), fertilizer source (poultry …

Development Of A Turkey Coccidiosis Vaccine Candidate: An Attenuated Line Of The Protozoan Parasite, Eimeria Meleagrimitis, Thilakar Rathinam

Graduate Theses and Dissertations

Coccidiosis is an economically important enteric disease of poultry caused by protozoan parasites belonging to the genus Eimeria. Drugs are most commonly used to control coccidiosis. Widespread usage of anticoccidial drugs in the field has resulted in development of drug resistant strains and consequently decreased drug efficacy. An alternative control strategy using attenuated vaccines is desired. A series of experiments was designed to identify, isolate and attenuate a strain of a common and pathogenic species of Eimeria of turkeys, E. meleagrimitis.

Sensitivity of field isolates of turkey coccidia to the anticoccidials drugs amprolium, clopidol, diclazuril, and monensin was investigated. A …

Measuring The Role Of Inhibition In Auditory Discrimination In Mice, Tazima Nur

Graduate Theses and Dissertations

Understanding how inhibitory neurons affect sensory information processing in the cerebral cortex is an ongoing goal of both neuroscience and statistical physics research. In this master's thesis research project, an experimental system has been designed and built for studying how auditory dynamic range depends on inhibitory neurons, based on observations of mouse behavior. In this thesis, firstly, the topic of inhibition and information processing has been introduced. Then two papers related to inhibition and dynamic range has been reviewed in detail. One of the papers is an experimental work that analyzes the affect of inhibition on dynamic range. The other …

Antibacterial Activity Of Commercially Available Plant Extracts On Selected Campylobacter Jejuni Strains, Divya Oppath Sivasankaran

Graduate Theses and Dissertations

Campylobacter jejuni is recognized as a leading cause of foodborne illness worldwide with approximately 850,000 cases per year in the United Sates. A total of 18 species of Campylobacter have been identified worldwide to date. Foodborne transmission of C. jejuni is mainly through the consumption of unpasteurized milk, contaminated poultry meat and water. C. jejuni can survive in very diverse environments under stressful conditions in human and animals which is different from the specific conditions and media required in laboratory experiments. There has been increased research in recent years to identify naturally occurring antibacterial agents to control and eliminate C. …

Trashed: The Myth Of The Southern Poor White, April Elizabeth Thompson

Graduate Theses and Dissertations

The fact of class has been a powerful tool in the process of identity formation, particularly in the American South, which has been viewed as a region apart from the national imaginary. To counter this exclusion, Southerners have often relied on stereotypes. One of the most prevalent and tragic of these is the stereotype of poor white trash, a construction that has been utilized to insist upon elite white Southerners' exceptionalism and innocence and to assert their rightful place in American historiography. While it is difficult to calculate their level of success, as perceptions of the region have varied through …

The Role Of Higher Education In Rural Community Development, Anita Faye Thompson

Graduate Theses and Dissertations

Higher education institutions commonly play a role in community development. Rural communities may be even more dependent on the university's investment. As higher education has looked to meet demands of stakeholders calling for greater accountability, it has become necessary for universities to be able to justify the effectiveness of these efforts. The purpose of this study was to determine the elements necessary for successful rural community development in Western Oklahoma. Utilizing the Delphi research method, 20 community development experts in rural Western Oklahoma participated in the three-round survey process. In the initial survey, participants collectively submitted a list of 41 …

Alkaline Hydrolyzable-Nitrogen, Seeding Date, And Clay-Fixed Ammonium As Potential Indicators Of Rice Response To Nitrogen Fertilization In Arkansas, Anthony Michael Fulford

Graduate Theses and Dissertations

Several potential indicators of rice (Oryza sativa L.) response to nitrogen (N) fertilization include the soils alkaline hydrolyzableN (AHN) concentration, seeding date, and the soils clayfixed NH₄N content. Three studies were conducted to: (1) correlate AHN, determined using Illinois Soil Nitrogen Test (ISNT) or Nitrogen Soil Test for Rice (NSTaR), to plant parameters of interest and develop a fertilizer N rate calibration curve capable of predicting the 95% relative grain yield (RGY) fertilizer N rate for rice grown on clayey soils; (2) evaluate the influence of seeding date and N fertilization on rice plant growth and grain …

Increased Effluent Dosage Effects On Septic System Absorption-Field Products Of Differing Architecture Types, Andrew Richard Gibbons

Graduate Theses and Dissertations

Nationwide, approximately 20% of all homes use an on-site septic system as a form of household wastewater treatment. Since karst features are prevalent throughout the Ozark Highlands region of Northwest Arkansas, surface and groundwater resources are susceptible to contamination. Therefore, the objectives of this study were to evaluate the effects of soil condition (i.e., wet and dry) and absorption-field-product architecture type [i.e., chamber, gravel-less-pipe (GLP), polystyrene-aggregate (PSA), and pipe-and-aggregate (PA)] on in-product solution storage and biomat thickness in a profile-limited soil, and to identify the long-term acceptance rate (LTAR) of each product. During Phase I of this study (i.e., March …

Development And Characterization Of An Autologous Whole Cell Breast Cancer Vaccine, Samantha Leigh Kurtz

Graduate Theses and Dissertations

Approximately 40,000 women will die from breast cancer in the United States in 2014. About 90% of these deaths will be due to metastases, rather than the primary tumor and majority of metastases are due to the recurrence and progression of non-metastatic disease. Current adjuvant treatments, such as chemotherapy and radiation, have severe side effects and may result in overtreatment and drug resistance.

Since greater than 90% of patients are diagnosed between stages I-III and have minimal residual disease after treatment, there is an opportunity to treat patients with an autologous breast cancer vaccine. Autologous vaccines under development have a …

A Deep Search Architecture For Capturing Product Ontologies, Tejeshwar Sangameswaran

Graduate Theses and Dissertations

This thesis describes a method to populate very large product ontologies quickly. We discuss a deep search architecture to text-mine online e-commerce market places and build a taxonomy of products and their corresponding descriptions and parent categories. The goal is to automatically construct an open database of products, which are aggregated from different online retailers. The database contains extensive metadata on each object, which can be queried and analyzed. Such a public database currently does not exist; instead the information currently resides siloed within various organizations. In this thesis, we describe the tools, data structures and software architectures that allowed …

Career Decision-Making Self-Efficacy: Examining The Effects Of Career Choice, Education, And Work Experience Of Entrepreneurs, Melissa W. Sisco

Graduate Theses and Dissertations

Prior research on the relationship between self-efficacy and career decision making is inconclusive because of the lack of theoretical background and causal conclusions. More research is needed to investigate how the educational background, career choice, and work experience, of entrepreneurs, influences their career decision-making self-efficacy beliefs and how those beliefs effect their decision to become entrepreneurs. The purpose of this study was to investigate to what extent career choice, education, and work experience related to the level of career decision-making self-efficacy among participants in the Ventureprise business incubation program who are or are intending to become entrepreneurs. The education and …

Designing And Implementing A Micro-Controller Based Primary-Side Sensing Flyback Converter For Leds Driver, Nam Nhat Tran

Graduate Theses and Dissertations

The fast development of LED and its applications has enabled a new generation of lighting device with higher efficiency and long lifespan. By employing a primary-side sensing flyback converter and the PIC18F micro-controller series, an LED driver could achieve two important features: (1) the compatibility with the available lighting fixtures, and (2) reducing unit price. The flyback converter was chosen for its simplicity, competitive low cost, and its ability to provide a constant output current, a necessarily important factor to an LED driver. Meanwhile, the PIC18F micro-controller series offer numerous advanced features which include but not limited to pulse-width modulation …

Examining The Role Of Street-Level Bureaucrats In The Implementation Of An Affordable Rental Housing Policy For Extremely Low Income Households In The District Of Columbia, Rod Williams

Graduate Theses and Dissertations

The individuals who staff the nation's 4,600 Community Development Corporations (CDCs) represent the front line in production of affordable housing for America's poor. CDC staff members work within chronic funding uncertainties, applying complex and often ambiguous policies, under pressure to address shortfalls in affordable units. As such, they represent a prime example of Lipsky's (1980) street level bureaucrats (SLBs): agency workers with no formal policy role, who nevertheless shape policy by exercising discretion in the course of implementing ambiguous directives under stressful and alienating conditions.

The purpose of this study is to uncover how CDC SLBs experience their work and …

Population Genetics, Distributions And Phenology Of Bombus Latreille, 1802 And Xylocopa Latreille, 1802 (Hymenoptera: Apidae), Amber Dawn Tripodi

Graduate Theses and Dissertations

This work addresses multiple knowledge gaps in bee ecology, population health and phylogeography in order to provide insights into the changing distributions of native bees. A comparison of Arkansas bumble bee records mirrors range-wide surveys, with records of stable species (Bombus bimaculatus Cresson, 1863 and B. impatiens Cresson, 1863) increasing three-fold, and records of the declining B. pensylvanicus (DeGeer, 1773) dropping to 60% of historical levels. However, nationally-recommended conservation-genetics tools did not mirror these results on a regional level. Stable and declining species had equivalent genetic diversity in samples from Arkansas and Tennessee (H_S range: 0.46-0.63). Diploid males, …

Ethnic And Language Matching: Effects On Hispanics' Treatment Perceptions, Carlos Adrian Ojeda Cedeno

Graduate Theses and Dissertations

Cultural adaptations to mental health treatment have been recommended to improve treatment outcomes in minorities, including Hispanics (Griner & Smith, 2006). One such adaptation includes matching the therapist to the client on culturally salient variables, such as spoken language or ethnic background. Yet, most investigations about the efficacy of matching have been correlational or have not examined language and ethnic match together (Cabassa, 2007). I investigated the effects of both ethnic and language matching on Hispanics' perceptions of psychological treatment. Participants were 100 Hispanic adults (36 men) randomly assigned to one of four conditions. In each condition, participants read a …

Social Media In The Church, Derick Ray Mckinney

Graduate Theses and Dissertations

This thesis project examines the effectiveness of social media in the church. Sites like Facebook, Twitter, Instagram, and YouTube have the potential to shape the way the world communicates. Many churches have even begun utilizing social media in their ministry efforts. They publicize, pray, encourage, and promote events, all using social media. This paper argues that Bible believing churches can effectively use social media to communicate to their members by announcing upcoming events, sharing audience specific information, and knowing the best time to post on these sites. This project shows a social media strategy implemented into New Heights Church in …