Digital Commons Network^™

Dynamic Processes In Network Goods: Modeling, Analysis And Applications, Arnut Paothong

USF Tampa Graduate Theses and Dissertations

The network externality function plays a very important role in the study of economic network industries. Moreover, the consumer group dynamic interactions coupled with network externality concept is going to play a dominant role in the network goods in the 21st century. The existing literature is stemmed on a choice of externality function with certain quantitative properties. The utility function coupled with the network externality function is used to investigate static properties of rational equilibrium. The aim of this work is to systematically initiate a development of quantitative effects of the concept of network externality and its influence on the …

An Evaluation Of Check-In/Check-Out With Accountability Tracking For At-Risk Students In A High-Need Elementary School, Ashley Lauren Barber

USF Tampa Graduate Theses and Dissertations

A multi-tiered system of supports offers a comprehensive model for the prevention of academic and behavior problems in schools. To date, research has emphasized the impact of universal and intensive interventions. However, the need for research on secondary or targeted group interventions (Tier 2) for those students who do not respond to the universal level of support is growing. This study evaluated CICO, a Tier 2 intervention, in improving student behavior when it is used with three elementary students from a high-need population and in conjunction with student accountability tracking, designed to promote parental involvement. Functional assessments indicated that all …

Utilizing Tagteach To Enhance Proficiency In Dance Movements, Mallory Joanne Quinn

USF Tampa Graduate Theses and Dissertations

The purpose of this study was to evaluate TAGteach as a training procedure to increase the fluency of three dance movements in a multiple baseline across behaviors design with 4 students of dance. Target behaviors included a pirouette/turn, kick, and a leap/jump, respective of the level of the class. A dance instructor was trained to implement the TAGteach procedure by the primary researcher. The targeted dance movements remained at a stable level during baseline and improved sequentially for each participant following the introduction of the TAGteach training. Implications for future research are discussed.

An Evaluation Of A Parent Implemented In- Situ Pedestrian Safety Skills Intervention For Individuals With Autism, Bethany Ann Harriage

USF Tampa Graduate Theses and Dissertations

This study evaluated a parent implemented in-situ pedestrian safety skills intervention for three individuals with autism. Specifically, this study examined the utility of using a behavioral skills training (BST) to help parents implement the most-to-least prompting procedures in training their children with autism pedestrian safety skills in community settings. A multiple baseline design across participants was used to assess parent implementation of in-situ pedestrian training as well as child participants' independently performed correct skills. Results indicated that parents implemented most-to-least prompting procedures with high levels of accuracy across streets during intervention and fading of BST. All child participants improved their …

The Acquisition And Usage Of The Sodas Problem Solving Method Among Adults At-Risk For Homelessness, Collin Edward Streetman

USF Tampa Graduate Theses and Dissertations

Individuals experiencing extended homelessness face multifaceted risks in physical health, nutrition, substance use, mental health, continuing unemployment, and incarceration. Some of these adults may benefit from learning a problem-solving decision-making method to assist them in dealing with everyday problems they encounter. This study taught three men with extensive histories of homelessness, but who were currently housed, the SODAS problem-solving decision-making method, and assessed their ability to learn it and guide another adult in the use of the method in simulated role-play problem situations. The acquisition of SODAS from behavioral rehearsal training was evaluated using a multiple-baseline design across participants' role …

Media That Objectify Women: The Influence On Individuals' Body Image And Perceptions Of Others, Ross Krawczyk

USF Tampa Graduate Theses and Dissertations

Past research has examined body image and eating-related outcomes of exposure to mass media. This research has generally found that such exposure is a significant risk factor for body image disturbance and disordered eating. However, a causal relationship has not yet been firmly established. Several theories, including objectification theory (Fredrickson & Roberts, 1997), have attempted to explain this relationship with some success. The current study had two primary goals. First, it was designed to further explore the potential causal relationship between mass media exposure and body image and affect disturbance. Second, it attempted to go beyond individuals' body image and …

Two Essays On Politics And Finance, Incheol Kim

USF Tampa Graduate Theses and Dissertations

I examined how politics affects corporate policies and value in two dissertation essays. In my first essay, we investigate whether diversity in points of view within corporate boards, as captured by the diversity in political ideology of board members, can affect a firm's performance. We employ personal political contributions' data to measure political ideology distance among groups of inside, outside directors and the CEO. Our empirical evidence strongly supports the notion that outside directors' monitoring effectiveness is more likely to be enhanced when their viewpoints are distinct from those of management. We find that ideologically diverse boards are associated with …

Argumentation As A Lens To Examine Student Discourse In Peer-Led Guided Inquiry For College General Chemistry, Ushiri Kumarihamy Kulatunga

USF Tampa Graduate Theses and Dissertations

This dissertation work entails three related studies on the investigation of Peer-Led Guided Inquiry student discourse in a General Chemistry I course through argumentation. The first study, Argumentation and participation patterns in general chemistry peer-led sessions, is focused on examining arguments and participation patterns in small student groups without peer leader intervention. The findings of this study revealed that students were mostly engaged in co-constructed arguments, that a discrepancy in the participation of the group members existed, and students were able to correct most of the incorrect claims on their own via argumentation.

The second study, Exploration of peer leader …

Factors Associated With Fear Of Breast Cancer Recurrence Among Survivors, Jean Marie Lucas

USF Tampa Graduate Theses and Dissertations

The purpose of this cross-sectional, secondary data analysis was to explore, non-modifiable (stable) trait factors and modifiable (transient) state factors associated with fear of recurrence (FOR) in breast cancer survivors. Antecedent trait factors included demographic, clinical, social/behavioral factors, postulated mediator state factors included pain, fatigue, sleep disturbances, depression, state anxiety and perceived stress, and FOR was the outcome variable. The study used baseline data from an R-21 NCI funded (grant #R21CA109168) randomized control trial that examined the effects of mindfulness based stress reduction in early stage breast cancer recovery. Instruments from this study for antecedent variables (trait factors) included a …

The Experiences Of Mothers Of Children With Autism In Jamaica: An Exploratory Study Of Their Journey, Angela R. Mann

USF Tampa Graduate Theses and Dissertations

Autism Spectrum Disorders (ASDs), also referred to as Pervasive Developmental Disorders (PDDs), are characterized by deficits in verbal and nonverbal communication, social interaction, and repetitive or restricted interests and behaviors. To date, much of the literature on ASDs has been conducted from a western perspective, although interest in ASDs from a global perspective has dramatically increased in recent years. Over the last decade, there have been numerous conceptual papers attempting to explain how autism might be experienced in other parts of the world. However, in actuality, little research has been conducted in this area, and further exploration of the experiences …

Applications Of Agent Based Approaches In Business: A Three Essay Dissertation, Shankar Prawesh

USF Tampa Graduate Theses and Dissertations

The goal of this dissertation is to investigate the enabling role that agent based simulation plays in business and policy. The aforementioned issue has been addressed in this dissertation through three distinct, but related essays. The first essay is a literature review of different research applications of agent based simulation in various business disciplines, such as finance, economics, information systems, management, marketing and accounting. Various agent based simulation tools to develop computational models are discussed. The second essay uses an agent-based simulation approach to study important properties of the widely used most popular news recommender systems (NRS). This essay highlights …

Strategic Messaging In A Political Crisis: Testing The Integrated Model For Explaining The Communication Behavior Of Publics, Tiffany Lynn Schweickart

USF Tampa Graduate Theses and Dissertations

Crisis response message strategies were examined using a post test-only randomized experiment (N=252) to determine their influence on perceptual, cognitive, and motivational antecedents to communication behavior in a political context. Results indicate that: (1) strategy type influences perceived strategy effectiveness; (2) situational beliefs influence situational motivation, subjective norm, and attitudes; (3) subjective norm and attitudes influence behavioral intention; and (4) referent criterion, situational motivation, and behavioral intention influence communicative action in publics during a political crisis.

Crossing Cultural Boundaries: Explorations In Multilingual Teaching And Learning, Patriann Smith

USF Tampa Graduate Theses and Dissertations

A transdisciplinary notion of learning considers what is between, above, and beyond the disciplines. Adherence to such a perspective warrants examination of any research endeavor from multiple entry points and from openness to the changing nature and infinity of knowledge. In this dissertation, "Crossing Cultural Boundaries: Explorations in Multilingual Teaching and Learning," I approached the study of language and literacy teaching and learning across multilingual and multicultural contexts via an optional dissertation process that required completion of multiple studies. This dissertation option allowed me three entry points: (a) an understanding of literacy and language policy in relation to language learners …

From Limited-English-Proficient To Educator: Perspectives On Three Spanish-English Biliteracy Journeys, Elizabeth Visedo

USF Tampa Graduate Theses and Dissertations

The purpose of this multicase study was to describe and explain the perceptions of three Spanish-English culturally and linguistically diverse (CLD) high achievers on their biliteracy journeys to become educators in the United States (U.S.), by answering: What elements constitute the perspectives of three L1-Spanish/L2-English CLD high achievers on the relevance of their biliteracy experience in order to become educators in the U.S.?; What factors do these three L1-Spanish/L2-English CLD high achievers perceive as key to describe their biliteracy experience?; What relevance, if any, do these three L1-Spanish/L2-English CLD high achievers perceive their biliteracy experience had for them to become …

A Case Study Understanding Employability Through The Lens Of Human Resource Executives, Carmeda L. Stokes

USF Tampa Graduate Theses and Dissertations

The purpose of this qualitative multiple case study was to examine HR executives' perspectives on employability enhancement for employees and how it is operationalized in their workplace. The exploratory questions that guided the study were, What are the perspectives of HR executives regarding employability enhancement for employees, and In what ways and under what conditions is organizational support of employability enhancement demonstrated through workplace learning initiatives? The conceptual framework for this study is based on Clarke and Patrickson's (2008) list of assumptions concerning employability as the premise for the new employment contract.

Data collected consisted of background questionnaires, semi-structured interviews, …

Cause-Related Controversy: An Analysis Of Corporate Sponsor Response To The Susan G. Komen/Planned Parenthood Crisis, Christina Maria Cameron

USF Tampa Graduate Theses and Dissertations

ABSTRACT

This qualitative study advances crisis communication and relationship management application and theory by examining the crisis response strategies used by corporations during a time of crisis involving a nonprofit partner. A qualitative content analysis was performed on the Facebook pages of 57 companies that were corporate partners of Susan G. Komen in early 2012. Nineteen companies responded using their Facebook accounts during two crisis periods studied. The researcher argues that consideration must be given to additional contingent factors beyond those proposed by situational crisis communication theory. Contingent variables related to the corporations' relationship with the charity, including level of …

Desert In The Springs: Ethnography Of A Food Desert, Margeaux Alana Chavez

USF Tampa Graduate Theses and Dissertations

"Food desert" commonly describes food insecure areas with few fresh food outlets. Though used in a number of sources, the definition of "food desert" remains largely undeveloped and research is often deficit oriented, failing to account for community assets that may exist within food deserts but are underutilized or under-supported. Using an assets-based, ethnographic approach, this study combines GIS and survey methodology with participant observation and qualitative interviews to assess the potential positive effect of urban agriculture on food accessibility in Sulphur Springs, a USDA identified urban food desert in Tampa, Florida.

Ethnographic data suggest that within this neighborhood, residents …

Prenatal Stress, Depression, And Herpes Viral Titers, Pao-Chu Hsu

USF Tampa Graduate Theses and Dissertations

Recent studies suggest that some cases of prenatal depression may be associated with reactivation of latent infections of the herpesvirus family. The possible relationships among stress, prenatal depression, and herpes viral reactivation in pregnancy are understudied and the molecular pathways such as the neuroimmune biogenic amine pathway are unidentified. Chronic stress shifts the T helper-1 cell (Th1) cytokine profile to a Th2 profile, which favors virus induced pathogenesis and survival. Pregnancy is also associated with a similar Th2 dominance. In non-pregnant individuals, exposure to psychological or physical stress may be associated with latent herpes viral reactivation and could result in …

Counselor Discomfort With Sexual Issues And Supervisory Role, Barbara Lofrisco

USF Tampa Graduate Theses and Dissertations

ABSTRACT

Sexual issues are common among the general population; therefore it is likely that clients suffer with them whether or not they are presenting issues. Because unresolved sexual issues may contribute to harm, counselors have an ethical obligation to ensure these issues are addressed during therapy. Yet, many fail to do so for a variety of reasons. Because clinical supervisors are in a unique position to nurture and mentor novice counselors, their influence is salient to this issue.

Although some research has been done to address this issue, results are inconclusive and somewhat contradictory. This study attempts to fill in …

Longitudinal Validation And Diagnostic Accuracy Of The Minnesota Borderline Personality Disorder Scale (Mbpd), Elizabeth Rojas

USF Tampa Graduate Theses and Dissertations

Borderline Personality Disorder (BPD) has been previously conceptualized as an extreme variant of normal personality traits, captured by continuous indices. A previous study successfully developed and validated a self-report BPD measure, the Minnesota Borderline Personality Disorder Scale (MBPD). I conducted two studies aimed at providing further validation for this measure. Results from Study 1 (clinical sample of substance users) indicated that MBPD exhibited strong positive correlations with measures of convergent validity (self-report and diagnostic measures). Additionally, the MBPD showed similar correlations with external correlates as those of the convergent validity measures, in addition to incremental utility in predicting these external …

Treatment Maintenance Of Cognitive-Behavioral Therapy For Anxiety In Youth With Autism Spectrum Disorders, Robert Rein Selles

USF Tampa Graduate Theses and Dissertations

Anxiety disorders commonly co-occur in children and adolescents with an autism spectrum disorder (ASD). Recently, treatment of anxiety using cognitive behavioral therapy (CBT) has been modified and studied in youth with ASD, with results consistently demonstrating positive treatment outcomes. In typically developing populations, CBT gains are well maintained as long as 14-years post-treatment; however, maintenance of CBT has not yet been studied in anxious youth with ASD. Using a sample of 32 youth who previously completed one of three CBT for anxiety in ASD treatment studies, the present study re-assessed parent report of anxiety symptoms in youth, 12-26 months (M …

Attitude Toward Digital And Print-Based Reading: A Survey For Elementary Students, Diedre D. Allen

USF Tampa Graduate Theses and Dissertations

The purpose of this study was to create a valid and reliable survey to measure third through fifth grade students' attitudes toward reading across three mediums: print, e-reader, and Internet. The theoretical framework pulls from self-determination theory and affective models to guide the development of a survey intended for use with intermediate elementary students. The Attitude Toward Reading Survey (ATRS) was developed and field-tested, revised, and field-tested again. Data analysis included confirmatory and exploratory factor analysis, Cronbach's alpha reliability, and cumulative logit modeling. The results indicate the survey is a reliable and valid tool for teachers to use. The ATRS …

Factors Related To The Professional Management Of Early Breastfeeding Problems: Perspectives Of Lactation Consultants, Erica Hesch Anstey

USF Tampa Graduate Theses and Dissertations

Addressing the sub-optimal breastfeeding initiation and duration rates has become a national priority. Inadequate support for addressing early breastfeeding challenges is compounded by a lack of collaboration between providers such as lactation professionals, nurses, pediatricians, and the family. The purpose of this exploratory study was to understand International Board Certified Lactation Consultants' (IBCLCs) perceived barriers to managing early breastfeeding problems. This qualitative study was guided by the symbolic interactionist framework through a grounded theory methodological approach. In-depth interviews were conducted with 30 IBCLCs from across Florida. IBCLCs were from a range of practice settings, including hospitals, WIC clinics, private practice, …

The Relationship Between Attitudes And Perspectives Of American Sign Language University Students Towards Deaf People, Beth Lilessie Cagle Brightman

USF Tampa Graduate Theses and Dissertations

N/A

Apathy In Parkinson's Disease: A Behavioral Intervention Study, London Butterfield

USF Tampa Graduate Theses and Dissertations

Apathy, a symptom reflecting motivational and self-initiation impairment, is one of the most common neuropsychiatric symptoms in Parkinson's disease (PD), with an average estimated prevalence of 40-45%. Elevated apathy has been associated with a host of negative associates and consequences, including cognitive impairment, poor daily functioning, poor treatment compliance and illness outcome, reduced quality of life, and increased caregiver burden and distress. While some studies have evaluated pharmacologic approaches to the treatment of apathy, few studies have evaluated non-pharmacologic approaches and we have identified no studies that have evaluated the efficacy of non-pharmacologic treatments of apathy in Parkinson's patients despite …

A Descriptive Study Of Four Principals' Experiences In Leading, Lewis Curtwright

USF Tampa Graduate Theses and Dissertations

ABSTRACT

The purpose of this portraiture study is to describe four African-American principals'

experiences, in the context of their principal's role, with the interventions they championed in

meeting the needs of their struggling students. This research attempts to answer questions

concerning: What role did the four principals play in the targeted school reform? What

interventions did each principal introduce and what evidence of effects do they identify for each

one? How did each principal's values and beliefs affect what they chose to do? Framed within

Social Justice Theory (SJT), the study provides insight into how these respondents increased

student achievement …

The Positive Illusory Bias And Adhd Symptoms: A New Measurement Approach, Sarah A. Fefer

USF Tampa Graduate Theses and Dissertations

The purpose of this study was to investigate perceptions of academic and social competence among adolescents with a continuum of inattentive and hyperactive/impulsive symptoms. Past literature suggests that children with Attention-Deficit/Hyperactivity Disorder (ADHD) display self-perceptions that are overly positive compared to external indicators of competence, a phenomenon that is referred to as the positive illusory bias (PIB; Owens, Goldfine, Evangelista, Hoza, & Kaiser, 2007). The PIB is well supported among children with ADHD, and recent research suggests that the PIB persists into adolescence. To date, research on the PIB has relied on difference scores (i.e., an indicator of competence is …

Analytical Modeling, Perturbation Analysis And Experimental Characterization Of Guided Surface Acoustic Wave Sensors, Onursal Onen

USF Tampa Graduate Theses and Dissertations

In this dissertation, guided surface acoustic wave sensors were investigated theoretically and experimentally in detail for immunosensing applications. Shear horizontal polarized guided surface acoustic wave propagation for mass loading sensing applications was modeled using analytical modeling and characterized by perturbation analysis. The model verification was performed experimentally and a surface acoustic wave immunosensor case study was presented. The results of the immunosensing were also investigated using the perturbation analysis.

Guided surface acoustic wave propagation problem was investigated in detail for gravimetric (or mass loading) guided wave sensors, more specifically for immunosensors. The analytical model was developed for multilayer systems taking …

The Perspectives Of Graduate Students With Visual Disabilities: A Heuristic Case Study, Luis Perez

USF Tampa Graduate Theses and Dissertations

The concept of liminality describes the experiences of individuals who live "between and betwixt" as a result of their indeterminate status in society. This concept seems appropriate to describe the experiences of people who live with vision loss, because we simultaneously belong to two social or cultural groups. On the one hand we must navigate the mainstream society in which we live day to day, which we are often able to do with the vision we have left. On the other hand, our disability sets us apart from that mainstream society. This idea of living in "between and betwixt" the …

Framing Colombian Women's Beliefs, Values And Attitude Towards Sex And Sexual High-Risk Behaviors, Rosa Ore

USF Tampa Graduate Theses and Dissertations

Hispanic immigrants constitute the largest and fastest growing groups of minorities in the United States. According to the 2010 Census, there are 50.5 million Hispanics in the United States, making up 16.3% of the total population (Passel, Cohn & Lopez, 2011). Furthermore, the state of Florida is home to 4,223,806 Hispanics (U.S. Census Bureau, 2010). Because the Hispanic population continues to grow, it is important to study their sexual health behaviors because diseases linked to risky sexual behaviors account for approximately 20,000 U.S. deaths each year, and are linked to a number of adverse reproductive outcomes (Abraido-Lanza, Chao, & Florez, …