Digital Commons Network^™

Cognitive Load Theory And Programmed Instruction, Michael L. Brazas

USF Tampa Graduate Theses and Dissertations

Programmed Instruction was a dominant force in educational research during the 1960’s and early 1970’s. During this period a new cognitively oriented psychology of education arose that eventually replaced the behaviorally driven research into programmed instruction. For some reason little work was done on integrating these two approaches. This study was designed to test a programmed instructional system based on the intrinsic programmed instructional technology of Crowder (1961) but incorporating design elements derived from cognitive load theory (Sweller, 1988). Specifically, this study tested a multimedia programmed instructional system (CLT-PI) based on work by Mayer (2001) against a text based system …

Creative Performance On The Job: Does Openness To Experience Matter?, Victoria L. Pace

USF Tampa Graduate Theses and Dissertations

Finding what is alike among the personalities of creative people has been a dream of many researchers. No single personality type has been discovered as prototypical, yet the promise of common attributes among creative people remains enticing. This study examines one of these promising characteristics - Openness to Experience, a personality factor from the Five-Factor Model. This factor has been shown to correlate positively with creativity in past studies. In the present study this relationship was partially confirmed in a sample of employees whose jobs require technical problem solving, by correlating the employees self-rated Work-specific Openness to Experience and NEO …

The Influence Of Local Rivers On The Eastern Cariaco Basin, Venezuela, Laura Lorenzoni

USF Tampa Graduate Theses and Dissertations

Two oceanographic cruises were conducted during September 2003 and March 2004 in the eastern half of the Cariaco Basin. Specific objectives were to examine the hydrography of the seasonal upwelling plume characteristic of this region, the spatial distribution of particles in the area, and to help determine the source and relative importance of in situ particle production vs. terrigenous particles delivered laterally from the coast.

During September 2003, average surface salinities within the basin were higher (36.6) relative to Caribbean Sea waters outside the basin (35.6). Salinity patterns indicated that the Orinoco and Amazon River plumes did not enter or …

Teaching Inclusivity: Preservice Teachers’ Perceptions Of Their Knowledge, Skills And Attitudes Toward Working With English Language Learners In Mainstream Classrooms, Philip C. Smith

USF Tampa Graduate Theses and Dissertations

This study investigated the effect of one semester of ESOL education on preservice teachers by examining their perceived knowledge and skill in working with English Language Learner (ELL) students, their attitude toward having ELL students in their mainstream classrooms, and what classroom methods they perceive as effective in their ESOL preservice education courses.

Data for this study were collected from pre- and post-course attitudinal surveys during one semester of course work, from participants at two specific points in their educational experience; participants in the (1) introductory and (2) final TESOL course.

There were 293 participants who took the pre-, and …

Strategies For Incident Management In An Urban Street Network, Vikramaditya Bhide

USF Tampa Graduate Theses and Dissertations

In this research the problem of incident congestion on surface street networks is addressed. Microscopic simulation is used to simulate incident scenarios on various corridors in the Tampa Bay area. The effect of the three factors, namely, network, speed and signal strategies on the traffic flow is studied. The network performance is based on Highway Capacity Manual specified measures of effectiveness prepared by the Transportation Research Board.

Three inherently different city corridors, high, medium and low volume, are used to test the strategies developed. The strategies investigated include varying speed limits during incidents and using pre-timed and semi-actuated signals that …

An Automatic Code Generation Tool For Partitioned Software In Distributed Computing, Neeta S. Singh

USF Tampa Graduate Theses and Dissertations

In a large class of distributed embedded systems, most of the code generation models in use today target at object-oriented applications. Distributed computing using procedural language applications is challenging because there are no compatible code generators to test the partitioned programs mapped on to the multi-processor system. In this thesis, we design a code generator to produce procedural language code for a distributed embedded system. Unpartitioned programs along with the partition primitives are converted into independently executable concrete implementations. The process consists of two steps, first translating the primitives of the unpartitioned program into equivalent code clusters, and then scheduling …

Usfkad: An Expert System For Partial Differential Equations, Sami M. Kadamani

USF Tampa Graduate Theses and Dissertations

USFKAD is an encoded expert system for the eigenfunction expansion of solutions to the wave, diffusion, and Laplace equations: both homogeneous and nonhomogenous; one, two, or three dimensions; Cartesian, cylindrical, or spherical coordinates; Dirichlet, Neumann, Robin, or singular boundary conditions; in time, frequency, or Laplace domain. The user follows a menu to enter his/her choices and the output is a LaTeX file containing the formula for the solution together with the transcendental equation for the eigenvalues (if necessary) and the projection formulas for the coefficients. The file is suitable for insertion into a book or journal article, and as a …

Improving Accuracy In Logarithmic Multiplication Using Operand Decomposition, Mahalingam Venkataraman

USF Tampa Graduate Theses and Dissertations

The arithmetic operations such as multiplication and division in binary number system are computationally complex in terms of area, delay and power. Logarithmic Number Systems (LNS) offer a viable alternative combining the simplicity of fixed point number systems and the precision of floating point number systems. However, the computations in LNS result in some loss of accuracy and thus, are limited to mostly signal processing applications; where in certain amount of error is tolerable. In LNS, the cost of computations can be tradeoff with the level of accuracy needed. The Mitchell algorithm proposed incite[mitchell], is a simple approach commonly used …

The Effects Of Moisture On Thin Film Delamination And Adhesion, Patrick Waters

USF Tampa Graduate Theses and Dissertations

Significant drops in adhesion have been measured for copper and diamond like carbon (DLC) films with the introduction of water at the film/substrate interface. A 1 thick tungsten superlayer with high compressive residual stress was deposited on the films of interest to help induce interfacial debonding by indentation. Modifications were made to the superlayer indentation technique to introduce water at the interface while performing indents. Film adhesion dropped by a factor of 10 to 20 for the copper films and 50 to 60 for the DLC films. The reduction in adhesion is believed to be caused by a combination of …

Analysis Of The Impact Of The Location Of A Window Type Air-Conditioner On Thermal Comfort In An Office Room, Hamza Begdouri

USF Tampa Graduate Theses and Dissertations

This study considers airflow simulations to evaluate the impact of different window air-conditioner locations on the thermal comfort in an office room (OR). This thesis compares the air distribution for an office room by using computational fluid dynamics (CFD) modeling to previously studied rooms. The air distribution was modeled on a typical office room window air conditioning unit, air supply from a high pressure on the top and the low pressure exhaust on the bottom considering the existing manufacturing ratios for surface areas. The discharge angle for the supply grill of the AC unit was varied from 20 to 40 …

The Effects Of Interracial Interaction On Behavior As A Function Of Prejudice And Race, Jason R. Read

USF Tampa Graduate Theses and Dissertations

In a series of two experiments, the first involving 121 participants and the second 114, I investigated whether level of racial prejudice is related to performance on a cognitive task and helping behavior in participants who had just interacted with the target of their prejudice. The moderating effect of control was tested and, unlike previous research, the responses of African-American participants were studied too. It was proposed that when people interact with the target of their prejudice, they will experience stress and the aftereffects of stress will lead to a decrement in Stroop task performance and a lower likelihood of …

The Effects Of A School-Based Social Skills Training Program On Children With Adhd: Generalization To The School Setting, Tricia C. Rudolph

USF Tampa Graduate Theses and Dissertations

A diagnosis of Attention-Deficit/Hyperactivity Disorder is given when a child exhibits developmentally inappropriate levels of inattention, impulsivity and hyperactivity. In addition to academic and behavior problems, these children often have significant social problems. Since social problems are associated with a greater risk for developing problems later in life, a number of interventions have been attempted to normalize the social interactions of children with ADHD. These have included stimulant medication, cognitive-behavioral interventions, behavior modification, and social skills training. Additionally, attempts have been made to maximize the benefits of these interventions by combining them. Typically this involves combining stimulant medication with one …

A Phylogenetic Approach For The Study Of Variation And Determination Of Population Affiliation Of Indigent Human Skeletal Remains, Hattie Bea Wetherington

USF Tampa Graduate Theses and Dissertations

Mitochondrial DNA (mtDNA) has played a major role in human population studies over the past decade due to its maternal inheritance and negligible recombination (Macaulay, 1999). The mtDNA control region has been the focus of these studies due to the highly polymorphic nature of this non-coding region. Forensic scientists also use mtDNA to help determine the identity of missing individuals when nuclear DNA is not present. However, when skeletal remains are unclaimed, identification becomes near impossible. Therefore, mtDNA can play a valuable role in identification in terms of population affiliation, especially in conjunction with morphological analysis.

The goals of this …

Low Loss Rf/Millimeter-Wave Mems Phase Shifters, Balaji Lakshminarayanan

USF Tampa Graduate Theses and Dissertations

A true time delay multi-bit MEMS phase shifter topology based on impedance-matched slow-wave CPW sections on a 500µm thick quartz substrate is presented. Design equations based on the approximate model for a distributed line is derived and used in optimization of the unit cell parameters. A semi-lumped model for the unit cell is derived and its equivalent circuit parameters are extracted from measurement and EM simulation data. This unit cell model can be cascaded to accurately predict N-section phase shifter performance. Experimental data for a 4.6mm long 4-bit device shows a maximum phase error of 5.5° and S₁₁ less …

Integrated Scheduling And Information Support System For Transit Maintenance Departments, Paula Andrea Lopez Alvarado

USF Tampa Graduate Theses and Dissertations

The projected increase of population in the United States and particularly in the state of Florida shows a clear need of improvement in mass transportation systems. To provide outstanding service to rides, well maintained fleet that ensures safety for riders and other people on the streets is imperative.

This research presents an information support system that assists maintenance managers to review and analyze data and evaluate alternatives in order to make better decisions that maximize efficiency in operations at transportation organizations. A system that consists of a mathematical scheduling model that interacts with a forecasting model and repair time standards …

Performance Evaluation Of Mobile Ad Hoc Networks In Realistic Mobility And Fading Environments, Preetha Prabhakaran

USF Tampa Graduate Theses and Dissertations

Mobile Ad hoc Networks (MANETs) are wireless networks, which consist of a collection of mobile nodes with no fixed infrastructure, where each node acts as a router that participates in forwarding data packets. They are a new paradigm of wireless communications for mobile hosts that are resource-constrained with only limited energy, computing power and memory.

Previous studies on MANETs concentrated more on energy conservation in an idealistic environment without taking into consideration, the effects of realistic mobility, interference and fading. The definition of realistic mobility models is one of the most critical and, at the same time, difficult aspects of …

Partial Evaluation Based Triple Modular Redundancy For Single Event Upset Mitigation, Sujana Kakarla

USF Tampa Graduate Theses and Dissertations

We present a design technique, called partial evaluation triple modular redundancy for hardening combinational circuits against Single Event Upsets (SEU). The input environment is given in terms of signal probabilities of the lines. This is useful information to determine the redundant gates of the given circuit. The basic ideas of partial redundancy and temporal triple modular redundancy are used together to harden the circuit against SEUs. The concept of partial redundancy is used to eliminate the gates whose outputs can be determined in advance. This technique fails in cases when the actual inputs to the circuit are not in accordance …

An Investigation Of Tio2-Znfe2O4 Nanocomposites For Visible Light Photocatalysis, Jeremy Wade

USF Tampa Graduate Theses and Dissertations

Environmental pollution on a global scale is expected to be the greatest problem that chemical scientists will face in the 21st century, and an increasing number of these scientists are looking to new photocatalytic systems for the solution. Existing photocatalytic systems are effective for the decomposition of many unwanted organics through the use of efficient semiconductor photocatalysts activated by ultra-violet (UV) irradiation. The demand for visible light activated photocatalytic systems is increasing rapidly. Currently, however, the efficiency and availability of photocatalysts which can be activated effectively by the solar spectrum and especially indoor lighting is severely limited.

The purpose of …

Modification Of Mdmx By Ubiquitination And Sumoylation, Yu Pan

USF Tampa Graduate Theses and Dissertations

MDM2 and MDMX are two major negative regulators of tumor suppressor p53. Both MDM2 and MDMX can inactivate p53 and play important roles in mouse embryonic development in a p53 dependent manner. MDM2 possesses ubiquitin E3 ligase activity and mediates self-ubiquitination as well as ubiquitination and degradation of p53 by proteasome. We identify MDMX as another ubiquitin E3 ligase substrate of MDM2. MDM2 promotes the ubiquitination and degradation of MDMX through proteasome pathway. The RING domains of both MDMX and MDM2 are required and sufficient for MDM2-mediated MDMX ubiquitination. ARF overexpression, DNA damage or MDM2 overexpression can all stimulate MDMX …

The Impact Of Structural Adjustment On Health, Education And Employment: A Case Study On Sierra Leone, Rashida Strober

USF Tampa Graduate Theses and Dissertations

Since their inception in African countries, structural adjustment has tended to cause more harm than help. This thesis aims to answer the question, in what ways have structural adjustment policies impacted Africa in general and Sierra Leone in particular? This question is highly relevant when it is considered that Africa is one of the poorest regions in the world and has experiences much conflict and suffering. In addition, much is known about the impact of structural adjustment in many African countries. However, little has been written on the impact of structural adjustment in Sierra Leone, especially in terms of the …

County Level Predictors Of Homicide And Suicide In The State Of Florida, Kelly K. Browning

USF Tampa Graduate Theses and Dissertations

The present study expands the range of theoretical perspectives and empirical questions that have occupied the recent literature on homicide and suicide. The study examines county-level predictors for homicide and suicide in all sixty-seven counties in Florida. The current examination identifies which county-level variables are most closely related to each other, which variables explain the greatest amount of differences within the Florida counties, as well as which variables are most significantly correlated with the homicide and sucide rate by county. Additionally, the variables included in the present research are driven by the theorectical perspectives of social disorganization and anomie/strain theory. …

Two Essays On Security Offerings: Information Production, Investor Perception And The Types Of External Financing, And A Unified Analysis On Financing Choices And Offering Costs, Bingsheng Yi

USF Tampa Graduate Theses and Dissertations

I investigate the impacts that information production, information asymmetry have on firms financing choices 3/4 equity financing or debt financing. I find that equity issue announcements encourage more information production than debt issue announcements, which in turn raises the probability of equity financing. In addition, the post-issue stock market performance is positively associated with information production. The results are robust after controlling for investor optimism. I also apply the Heckmans two-step procedure to jointly investigate firms financing choices and offering costs. I find that security-issuing firms choose the less-costly financing type.

The Effects Of A Parent Intervention On The Phonological Awareness Skills Of Kindergarten Students, Andrea Ofiara

USF Tampa Graduate Theses and Dissertations

This study examined the efficacy of the Sound Foundations program, implemented by parents, for increasing phonological awareness (PA). Three kindergarten students identified with PA deficits and their mothers served as participants. Parents implemented Sound Foundations twice per week for five and a half weeks. The effects of the intervention were evaluated using a multiple baseline across participants design. PA was measured using the Phoneme Segmentation Fluency measure of the Dynamic Indicators of Basic Early Literacy Skills. Results showed that two students showed increases over time in phonemes per minute after the parent intervention. A third student did not show substantial …

The Effects Of The Presence Of A Dog On The Social Interactions Of Children With Developmental Disabilities, Stephanie Walters

USF Tampa Graduate Theses and Dissertations

The effects of the presence of a dog on the social interactions between children with developmental disabilities and their teacher were analyzed in this study. We examined whether the presentation of a dog would improve the social interactions of three children with developmental disabilities. A baseline condition consisting of the child and teacher in the presence of three toys, one of which was a toy dog was followed by an intervention in which a real dog was added to the sessions. A multiple baseline design across participants was employed to assess experimental changes in interactions during the intervention condition.

All …

Toward A Social-Cognitive Psychology Of Speech Technology: Affective Responses To Speech-Based E-Service, Melanie Diane Polkosky

USF Tampa Graduate Theses and Dissertations

Speech technologies, or technologies that recognize and respond to human speech, have recently emerged as a ubiquitous and cost-effective form of customer self-service (e-service). Although customer satisfaction is regarded as an important outcome of e-service interactions, little is known about users affective responses to conversational interactions with technology. Using a theoretical foundation derived from research in social cognition, interpersonal communication, psycholinguistics, human factors, and services marketing, two studies develop items for a speech interface usability scale, which is then used to examine interrelationships among individual differences (e.g., self-monitoring, need for interaction with a service provider, inherent novelty seeking), usability, comfort, …

Optimization Study Of Ba-Filled Si-Ge Alloy Type I Semiconducting Clathrates For Thermoelectric Applications, Joshua Martin

USF Tampa Graduate Theses and Dissertations

Thermoelectric phenomena couple thermal and electric currents, allowing for solid-state conversion of heat into electricity. For decades Radioisotope Thermoelectric Generators have supplied power to NASA satellites and deep space probes. A more accessible application to consumers is the automotive industry's aspiration to incorporate thermoelectrics into active waste heat recovery systems. Higher power demands require these new thermoelectric devices to operate at higher temperatures and higher efficiencies, justifying new materials research. Recently, clathrates have gained interest for thermoelectric applications due to the unique properties they possess.These properties are directly related to their crystal structure. Therefore, clathrates are not only of interest …

Reconstructing Women's Identities: The Phenomenon Of Cosmetic Surgery In The United States, Cara L. Okopny

USF Tampa Graduate Theses and Dissertations

The popularity of cosmetic surgery in the U.S. has increased dramatically over the last ten years - particularly for women, who make up the largest group of cosmetic surgery consumers. Cosmetic surgery can include relatively simple procedures such as permanent hair removal or Botox to more complicated procedures like breast augmentations and face-lifts. The rise in popularity of cosmetic surgery exalts only one kind of beauty and excludes many women from ever attaining this ideal, so while women may feel empowered, surgery acts as a form of assimilation, because the act of cosmetic surgery reifies an exclusionary beauty norm. With …

School-Based Mental Health Services Delivered By School Psychologists, Emily Luis

USF Tampa Graduate Theses and Dissertations

This study involved analyses of an existing database conducted for the purposes of identifying and understanding factors that are associated with the delivery of school-based mental health services by school psychologists. The study examined the average number of hours per week in which school psychologists engage in mental health services and the types of mental health services in which they engage. Factors such as training, desire to deliver mental health services, time available and support for mental health services were investigated. The database that served as the basis for these analyses had been created by mailing a survey to 1000 …

The Impact Of Peer Tutoring And Self-Monitoring On Oral Reading Fluency For Children Who Exhibit Symptoms Of Attention-Deficit/Hyperactivity Disorder, Shannon M. Leis

USF Tampa Graduate Theses and Dissertations

This study examined the effects of peer tutoring and self-monitoring interventions on the oral reading performance of students exhibiting symptoms of AttentionDeficit/Hyperactivity Disorder: Predominantly Inattentive Type. A multiple baseline across participants design was used to evaluate the effectiveness of the peer tutoring and self-monitoring interventions with four second grade students who were tutored by fourth grade students. Results indicated that the median number of words read correct per minute as measured by curriculum-based measurement reading probes increased from baseline to intervention phases for three of the four tutee participants. In addition, the median number of errors from baseline to intervention …

System Level Energy Optimization For Location Aware Computing, Hariharan Sankaran

USF Tampa Graduate Theses and Dissertations

We present an energy conscious location-aware computing system that provides relevant information about the users current location. The location-aware computing system is initialized with a map (in the form of a graph) as well as audio files associated with several locations in the map. The system consists of: GPS receiver module, Serial port, Compact flash module, Stereo codec, Power manager module implementing three sub modules namely, GPS-to-real-world position conversion module (implements algorithm to convert GPS co-ordinates to graph nodes), Nearest-location-search module (implements modified Dijkstras algorithm), and User speed estimation module. The location-aware computing system receives the GPS co-ordinates for the …