Digital Commons Network^™

Differential Association Of Vitronectin And Fibronectin With Glass And Electrospun Fibers Of A Poly (D-Lysine) /Poly (Acrylic Acid), Syed Muhammad Sohaib Zafar Zafar

USF Tampa Graduate Theses and Dissertations

Proteins represent major constituent of the extracellular matrix which plays an important role in the formation, maintenance and remodeling of tissues, this project focuses on adsorption of two specific serum proteins fibronectin (FN) and vitronectin (VTN) responsible for mediating cell matrix interaction through integrin binding, tripeptide Arg-Gly-Asp (RGD) sequence found in these protein features are recognized by αβV₃ integrin which ultimately helps in clot formation.

Making A Place For People At A Wildlife Corridor On Chicago's South Side, Alexis Winter

USF Tampa Graduate Theses and Dissertations

What role do environmental conservation projects play in the transformation of American cities? How do these projects affect city residents? In this study, I ask these questions at the Burnham Wildlife Corridor, where the Chicago Park District worked with institutional and community-based partner organizations to engage city residents in the creation of a lakefront wildlife habitat and public nature area. Through ethnographic interviews and participant observation I explored how actors at various levels understand this changing landscape and their roles in shaping it. I situate the Burnham Wildlife Corridor project in the broader context of a state-level plan, the Millennium …

Authentication In Wireless Body Area Networks (Wban), Nagalaxmi Yenuganti

USF Tampa Graduate Theses and Dissertations

With the advancements in technology and computing environment capabilities, the number of devices that people carry has increased exponentially. This increase initially occurred as a result of necessity to monitor the human body condition due to chronic diseases, heart problems etc. Later, individuals’ interest was drawn towards self-monitoring their physiology and health care. This is achieved by implanting various sensors that can proactively monitor the human body based on medical necessity and the health condition of the user. Sensors connected on a human body perceive phenomena such as locomotion or heartbeat, and act accordingly to form a Body Area Network. …

Using Instructions And Behavioral Skills Training To Teach Facebook Skills To Seniors, Alison Ann Oconnell

USF Tampa Graduate Theses and Dissertations

The senior population is growing faster than any other population group, and life expectancy is increasing. E-mail and social media enable people of all ages to stay in touch, and find information, resources, and entertainment. Positive effects are associated with computer and internet use for older adults, but not all seniors have embraced technology and some seniors feel negatively about it. Several different methods have been used to teach seniors computer skills, including mentoring, lecturing, and providing instructions, but not many procedures have been evaluated for effectiveness. In the current study, we recruited three to five seniors, taught them to …

A Smartphone-Based System For Clinical Gait Assessment, Andres Alfredo Perez Leon

USF Tampa Graduate Theses and Dissertations

Patients with lower limbs problems are an increasing population in the US and many of them require surgery and its subsequent post-op Physical Therapy (PT). For all these patients, tracking their progress and evolution towards full recovery is very important. To assess the patients and track their progress, patients are usually required to perform very specific tests administered by a physical therapist. These tests either require very expensive equipment or rather require the subjective experience of the physical therapist who administer them. One of these tests is the Functional Gait Assessment (FGA) test, perhaps the most widely adopted one for …

Respiratory Syncytial Virus-Infected Mesenchymal Stem Cells Regulate Immunity Via Interferon-Beta And Indoleamine-2,3-Dioxygenase, Michael B. Cheung

USF Tampa Graduate Theses and Dissertations

Respiratory syncytial virus (RSV) is the most common cause of acute lower respiratory tract infection in young children worldwide, accounting for an estimated 33.8 million cases of respiratory disease, over 3 million of which require hospitalization, and between 66,000 and 199,000 deaths in this susceptible population. Additionally, severe RSV infection early in life is associated with an increased risk of wheeze and other airway disorders later in life. Despite this, there is currently no vaccine or economically reasonable prophylactic regimen to prevent infection. While disease is typically more severe in infancy RSV can infect throughout the lifespan repeatedly as the …

Assessment Of Prolonged Occupational Exposure To Heat Stress, Ximena Garzon-Villalba Garzon-Villalba

USF Tampa Graduate Theses and Dissertations

Heat stress is a recognized occupational hazard present in many work environments. Its effects increase with increasing environmental heat loads. There is good evidence that exertional heat illness is associated with ambient thermal conditions in outdoor environments. Further, there is reason to believe that risk of acute injury may also increase with the ambient environment. For these reasons, the assessment of heat stress, which can be done through the characterization of the wet bulb globe temperature (WBGT), is designed to limit exposures to those that could be sustained for an 8-h day. The ACGIH Threshold Limit Value (TLV) for heat …

Bi-Directional Work-Family Affective Spillover: A Daily Diary Study, Michele Wilk Gazica

USF Tampa Graduate Theses and Dissertations

To date, most scholarship on work-family spillover effects has ignored the additive or interactive daily effects of experiences in both the work and family domains on important employee health outcomes. Thus, the overall purpose of this study was to investigate how both positive and negative domain-specific (i.e., work or family) affective events influence an employee’s state affect, exposure to affective events in the alternative domain, and health and wellbeing, namely physical wellbeing and sleep quality.

This study drew upon the affective events and mood-congruent cognition theories to help explain how one domain influences the other. Affective events are things that …

Self-Determination During School-To-Adulthood Transition In Young Adults With Autism Spectrum Disorder From The United States And Hong Kong, Gary Yu Hin Lam

USF Tampa Graduate Theses and Dissertations

There is an increasing population of students with ASD graduating from schools and entering adulthood. Post-school transition is particularly challenging for these young adults and they tend to exhibit unfavorable outcomes in various domains in life. The concept of self-determination has been identified to promote successful transition and adult outcomes. With its root stemming from Western ideologies, the conceptualizations and manifestations of self-determination have rarely been examined across cultures. The present study aims to examine the experiences of self-determination in young adults with ASD during their school-to-adulthood transition and directly compare their experiences across American and Chinese contexts. Individual interviews …

Applications Of Molecular Modelling And Structure Based Drug Design In Drug Discovery, Sreya Mukherjee

USF Tampa Graduate Theses and Dissertations

Calcium ions have important roles in cellular processes including intracellular signaling, protein folding, enzyme activation and initiation of programmed cell death. Cells maintain low levels of calcium in their cytosol in order to regulate these processes. When activation of calcium-dependent processes is needed, cells can release calcium stored in the endoplasmic reticulum (ER) into the cytosol to initiate the processes. This can also initiate formation of plasma membrane channels that allow entry of additional calcium from the extracellular milieu. The change in calcium levels is referred to as calcium flux. A key protein involved in initiation of calcium flux is …

Cell Cycle Arrest By Tgfß1 Is Dependent On The Inhibition Of Cmg Helicase Assembly And Activation, Brook Samuel Nepon-Sixt

USF Tampa Graduate Theses and Dissertations

Tumorigenesis is a multifaceted set of events consisting of the deregulation of several cell-autonomous and tissue microenvironmental processes that ultimately leads to the acquisition of malignant disease. Transforming growth factor beta (TGFß) and its family members are regulatory cytokines that function to ensure proper organismal development and the maintenance of homeostasis by controlling cellular differentiation, proliferation, adhesion, and survival, as well as by modulating components of the cellular microenvironment and immune system. The pleiotropic control by TGFß of these cell intrinsic and extrinsic factors is intimately linked to the prevention of tumor formation, the specifics of which are dependent on …

Effects Of A Novel Right Brain Intervention On Stuttering In Familiar And Structured Speech Tasks, Josalyn Elizabeth Perry

USF Tampa Graduate Theses and Dissertations

Over 3 million Americans are disfluent due to developmental stuttering. Current evidence-based treatments typically consist of a rigorous schedule of intensive therapy, followed by the need for maintenance of skills, placing high demands on self-monitoring of one’s speech at all times. Relapse after treatment is very common, at 84%. The demand for further research into treatment possibilities for stuttering is on the forefront. Previous research has connected neural activations in people who stutter (PWS) and people with chronic nonfluent aphasia. The aim of this study was to determine if a novel intervention, based on a treatment for anomia, would change …

Tongue Twisters Quantified: Ultrasound Analysis Of Speech Stability And Speech Errors, Karen Reddick

USF Tampa Graduate Theses and Dissertations

This thesis investigates errors on speech sounds (or phonemes) produced in laboratory speech stimuli designed to generate phonological onset errors. The present study adds to the literature on phonological speech errors with an instrumental analysis of tongue posture during speech error production and an investigation of the nature of speech errors as unintended variation in articulation.

This study utilized ultrasound instrumentation to visualize speech errors made on velar and alveolar stop consonants at the point of stop closure. Two types of errors were of interest, categorical errors and gradient errors. Categorical errors are those that are heard by the listener …

Static And Dynamic Spectral Acuity In Cochlear Implant Listeners For Simple And Speech-Like Stimuli, Benjamin Anderson Russell

USF Tampa Graduate Theses and Dissertations

For cochlear implant (CI) listeners, poorer than normal speech recognition abilities are typically attributed to degraded spectral acuity. However, estimates of spectral acuity have most often been obtained using simple (tonal) stimuli, presented directly to the implanted electrodes, rather than through the speech processor as occurs in everyday listening. Further, little is known about spectral acuity for dynamic stimuli, as compared to static stimuli, even though the perception of dynamic spectral cues is important for speech perception.

The primary goal of the current study was to examine spectral acuity in CI listeners, and a comparison group of normal hearing (NH) …

Interspeech Posture In Spanish-English Bilingual Adults, Merrily Rose Shary

USF Tampa Graduate Theses and Dissertations

Interspeech posture (ISP) is a term used to define the position of a person’s articulators when they are preparing to speak. Research suggests that ISP may be representative of a speaker’s phonological knowledge in a particular language, as determined empirically with ultrasound measures of the tongue in English-French bilinguals (Wilson & Gick, 2014). It is possible, therefore, that measuring ISP could be a diagnostic tool for determining phonological knowledge in bilingual speakers. However, more information on ISP in typical adult bilingual speakers is needed before diagnostic claims can be made. For example, ISP is believed to be language specific, and …

Hexamethylene Diisocyanate Homopolymer And Monomer Exposure Assessment And Characterization At An Automobile Manufacturer In The United States, Karthik Reguram Sivaraman

USF Tampa Graduate Theses and Dissertations

A variety of paint products are used for their aesthetic and anti-corrosive properties. Isocyanates are consistently found in automobile paint products, particularly in clear coat polyurethane products. Clear coat is typically sprayed via pressurized air by means of an auto-spray robot. In clear coat repair situations, manual, air-powered spray guns are used, and manual spray Operators administer the clear coat material. The isocyanates are a primary anti-corrosive agent in polyurethane products. The Occupational Safety and Health Administration (OSHA) has not established a Permissible Exposure Limit (PEL). The National Institute for Occupational Safety and Health (NIOSH) and American Conference of Governmental …

The Effects Of Personal And Family History Of Cancer On The Development Of Dementia In Japanese Americans: The Kame Project, Adam Lee Slotnick

USF Tampa Graduate Theses and Dissertations

An increasing number of studies have shown an inverse association between a personal history of cancer (PHC) and dementia/Alzheimer’s disease (AD), both in those using dementia/AD as the outcome or cancer as the outcome. This is the first study to examine this potential association in Japanese Americans; and to examine family history of cancer and its association with incident dementia. Also, the association between these two diseases in the parents of participants were analyzed.

The Kame Project, conducted from 1992 through 2001 in King County, Washington was a population-based, prospective cohort study of older Japanese Americans. Conversion to incident dementia …

Effects Of A Novel Right Brain Intervention On Stuttering Frequency In Unfamiliar Speech Tasks, Chelsea Beatrice Stewart

USF Tampa Graduate Theses and Dissertations

Developmental stuttering persists in approximately 1% of the United States population. Stuttering has been shown to impact overall quality of life. The present study examines the effects of a Novel Right Brain Intervention on two female participants with persistent developmental stuttering. The aim of the study was to determine whether encouraging greater activation of the right hemisphere, specifically the pre-SMA, via complex left-handed movements, prior to speech production, would lead to a reduced stuttering frequency and severity in people who stutter (PWS). It was hypothesized that each participant would reduce stuttering symptoms and behaviors following the intervention due to the …

Relationship Between Teacher Characteristics And Accuracy In Identifying Middle School Students With Symptoms Of Anxiety And Depression, Elizabeth Storey

USF Tampa Graduate Theses and Dissertations

As a universal screening method, teacher nominations have been found to both miss and misidentify a substantial proportion of students with internalizing disorders such as anxiety and depression (Cunningham & Suldo, 2014; Gelley, 2014; Moor et al., 2007). Although some research has explored the accuracy of teacher nominations when used to identify students with anxiety and depression, no research examined the teacher characteristics that are potentially related to accuracy. The current study conducted a secondary analysis of an archival dataset (Gelley, 2014) to determine which characteristics of teachers (N= 19) are more closely related to accuracy in identifying …

Analysis Of Patterns In Handwritten Spelling Errors Among Students With Various Specific Learning Disabilities, Laura Ann Winkler

USF Tampa Graduate Theses and Dissertations

Students diagnosed with specific learning disabilities struggle with spelling accuracy, but they do so for different reasons. For instance, students with dysgraphia, dyslexia, and oral-written language learning disability (OWL-LD) have distinct areas of weakness in cognitive processing and unique difficulties with the linguistic features necessary for accurate spelling (Silliman & Berninger, 2011). This project considered the spelling errors made by such students to determine if their unique learning profiles lead to distinct misspelling patterns.

Academic summaries handwritten by 33 students diagnosed with dysgraphia (n=13), dyslexia (n=15), and OWL-LD (n=5) were analyzed for type/complexity and …

The Influence Of Motivational Salience On Attention Selection: An Erp Investigation, Constanza De Dios

USF Tampa Graduate Theses and Dissertations

The current study used event-related potentials (ERPs) to investigate how motivational salience in the form of expectation violation influences spatial attention. The medial frontal negativity (MFN) ERP indexes expected value, being negative to unexpected punishments and positive to unexpected rewards. The P1 and N1 ERPs index spatial attention, being larger to stimuli in attended locations. This design attached motivational value to locations by making one visual hemifield economically rewarding (greater probability of a rewarding outcome) and the other punishing (greater probability of a punishing outcome). Keypresses to a dot probe following a reward-signifying stimulus were awarded money if correct, and …

Oversampling Methods For Imbalanced Dataset Classification And Their Application To Gynecological Disorder Diagnosis, Iman Nekooeimehr

USF Tampa Graduate Theses and Dissertations

In many applications, the dataset for classification may be highly imbalanced where most of the instances in the training set may belong to some of the classes (majority classes), while only a few instances are from the other classes (minority classes). Conventional classifiers will strongly favor the majority class and ignore the minority instances. The imbalance problem can occur in both binary data classification and also in ordinal regression. Ordinal regression is a supervised approach for learning the ordinal relationship between classes. Extensive research has been performed for addressing imbalanced datasets for binary classification; however, current methods do not address …

Faculty Perceptions Of Online Student Disruptive Behavior, Kenneth J. Posner

USF Tampa Graduate Theses and Dissertations

Limited research and literature address online student disruptive behavior and the effectiveness of conflict management strategies to address these inappropriate behaviors. Through expanded offerings of online education, higher education institutions need to prepare strategically and intentionally for increased instances of online student disruptive behavior. This research study developed and administered an online survey to obtain quantitative and qualitative data. Utilizing the Qualtrics Research Suite and the Statistical Package for the Social Sciences (SPSS) for quantitative data analysis and MAXQDA for coding the qualitative data this research study examined five research questions identifying online student disruptive behaviors, observed frequencies, and effective …

Teaching Perspective Taking To Adults With Traumatic Brain Injury, Jacqueline Cohen

USF Tampa Graduate Theses and Dissertations

Approximately 1.7 million people sustain a traumatic brain injury each year in the United States. Perspective taking is a repertoire known to be severely affected following a traumatic brain injury. The ability to take the perspective of another greatly contributes to social interactions and involves a complex set of skills. A small number of studies have attempted to train perspective taking skills in populations lacking the ability, but none with individuals diagnosed with TBI. This study aimed to teach perspective taking skills to adults with TBI through established protocols which teach deictic relational frames. Three adult males with traumatic brain …

Evaluating Video Modeling To Teach Caregivers To Conduct Paired-Stimulus Preference Assessments, Cristina Diane Andersen

USF Tampa Graduate Theses and Dissertations

Stimulus preference assessments have been shown to identify stimuli that are likely to function as reinforcers for individuals with disabilities. It is important to identify these stimuli to increase the effectiveness of interventions. The ability to conduct a stimulus preference assessment is a skill that parents and caregivers should have. Research on training preference assessments is limited to staff, teachers, and students. The following study evaluated the effectiveness of video modeling to teach caregivers to conduct paired stimulus preference assessments. The results showed that video modeling was effective and that the results maintained during a one week follow up.

An Evaluation Of An Assessment Of Check-In/Check-Out With Children Who Are Homeless In An After School Care Program, Ana Paula Camacho

USF Tampa Graduate Theses and Dissertations

Schoolwide Positive Behavior Interventions and Support (SWPBIS) is an approach designed to improve the correct implementation, consistent use, and maintenance of evidence-based practices related to behavior, classroom management and school discipline systems. Check-in/Check-out (CICO) is often recognized as a successful intervention in SWPBIS. However, most of the research on the use of CICO has focused on the school setting. This study provided an extension to the literature by examining the effects of the CICO program with homeless children attending an afterschool program. A non-concurrent multiple baseline across participants design was used to evaluate the CICO program effects. Students were exposed …

Electrospinning Of Polymeric Solutions Using Opuntia Ficus-Indica Mucilage And Iron Oxide For Nanofiber Membranes For Treating Arsenic Contaminated Water, Venkatesh Eppili

USF Tampa Graduate Theses and Dissertations

Water is the essential part of every organism and it is also a vital constituent of healthy living and diet. Unfortunately water contamination over the past decade has increased dramatically leading to various diseases. As technology advances, we are detecting many pollutants at smaller levels of concentrations. Arsenic (As) is one of those major pollutants, and Arsenic poisoning is a condition caused due to excess levels of arsenic in the body. The main basis for Arsenic poisoning is from ground water which naturally contains high concentrations of arsenic. A case study from 2007 states that over 137 million people in …

Sialylation And Cardiomyocyte Complex N -Glycosylation Protect Against Dilated Cardiomyopathy And Heart Failure, Wei Deng

USF Tampa Graduate Theses and Dissertations

Dilated cardiomyopathy (DCM) is the third most common cause of heart failure, often associated with arrhythmias and sudden cardiac death if not controlled. Metabolic and/or environmental factors, such as alcohol abuse, obesity, diabetes and Chagas disease, alter glycoprotein glycosylation, can lead to DCM. Inherited genetic disease, such as the human congenital disorders of glycosylation (CDG), causes multi-system manifestations including DCM. Non-congenital changes in glycosylation are also occurred in humans with and in animal models of DCM and heart failure. However, mechanisms responsible for glyco-dependent DCM are not understood. Here we sought to investigate the impact of sialylation and N-glycosylation …

Ohm … Pardon The Interruption! An Exploration Of Mindfulness As A Buffer Against The Effects Of Intrusions, Keaton Allen Fletcher

USF Tampa Graduate Theses and Dissertations

Previous research has provided a helpful, albeit narrow, understanding of task interruptions as related to outcomes such as wellness and performance (e.g., Eyrolle & Cellier, 2000). Building on this foundation by viewing interruptions through the broader theoretical context of the theory of mental workload, this study sought to explain the cognitive processes underlying the negative performance effects often associated with interruptions and to apply an intervention aimed at mitigating these effects. Specifically, mindfulness has emerged as a promising method for reducing the cognitive burden of interruptions. This study examined the effects of intrusions (a type of interruption) on psychological strain …

A Life Cycle Assessment Of A Uranium Mine In Namibia, Janine Lambert

USF Tampa Graduate Theses and Dissertations

Uranium mining and nuclear power is a controversial topic as of late, especially in light of the recent Fukushima event. Although the actual use of nuclear fuel has minimal environmental impact, its issues come at the very beginning and end of the fuel’s life cycle in both the mining and fuel disposal process. This paper focuses on a life cycle analysis (LCA) of uranium mine in the desert nation of Namibia in Southern Africa. The goal of this LCA is to evaluate the environmental effects of uranium mining. The LCA focuses on water and energy embodiment such that they can …