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Vertical Field Switching Blue Phase Liquid Crystals For Field Sequential Color Displays, Hui-Chuan Cheng
Vertical Field Switching Blue Phase Liquid Crystals For Field Sequential Color Displays, Hui-Chuan Cheng
Electronic Theses and Dissertations
Low power consumption is a critical requirement for all liquid crystal display (LCD) devices. A field sequential color (FSC) LCD was proposed by using red (R), green (G) and blue (B) LEDs and removing the lossy component of color filters which only transmits ~30% of the incoming white light. Without color filters, FSC LCDs exhibit a ~3X higher optical efficiency and 3X higher resolution density as compared to the conventional color filters-based LCDs. However, color breakup (CBU) is a most disturbing defect that degrades the image quality in FSC displays. CBU can be observed in stationary or moving images. It …
Role Of Internal Degrees Of Freedom In The Quantum Tunneling Of The Magnetization In Single-Molecule Magnets, Hajrah Quddusi
Role Of Internal Degrees Of Freedom In The Quantum Tunneling Of The Magnetization In Single-Molecule Magnets, Hajrah Quddusi
Electronic Theses and Dissertations
The prominent features of single molecule magnets (SMMs), such as the quantum tunneling of the magnetization (QTM), are conventionally understood through the giant spin approximation (GSA) which considers the molecule as a single rigid spin. This model often requires the inclusion of high order anisotropy terms in the Hamiltonian, a manifestation of admixing of low lying excited states that can be more naturally understood by employing a multi-spin (MS) description i.e. considering the individual spins and the interactions between ions within the molecule. However, solving the MS Hamiltonian for high nuclearity molecules is not feasible due to the enormous dimensions …
Molecular Mechanisms Involved In Inflammatory Angiogenesis Induced By Monocyte Chemotactic Protein Induced Protein-1 (Mcpip1), Arpita Roy
Electronic Theses and Dissertations
Major diseases such as cardiovascular diseases, diabetes, obesity and tumor growth are known to involve inflammatory angiogenesis. MCP-induced protein 1 (MCPIP1) encoded by ZC3H12A gene, was reported to promote angiogenesis and is addressed in my dissertation as MCPIP. The mechanism/s involved in the angiogenic differentiation induced by MCPIP was however unknown. The aim of this study was to bridge this gap in our knowledge and delineate the molecular mechanisms and sequential processes involved in angiogenesis mediated via MCPIP. To determine if angiogenesis induced by inflammatory cytokines, TNF-, IL-1 and IL-8 is mediated via induction of MCPIP, knockdown of MCPIP by …
The Last Two Years Of David Brachman: Designing A Feature Film On A Micro Budget, Elizabeth Anne Sutphin
The Last Two Years Of David Brachman: Designing A Feature Film On A Micro Budget, Elizabeth Anne Sutphin
Electronic Theses and Dissertations
This thesis documents my creative process as the Production Designer on the feature length micro budget film The Last Two Years of David Brachman, written and directed by Marc Casilli. The film is a dark comedy chronicling the life of David Brachman, a twenty-five year old with a stagnant life that is seemingly leading nowhere, as he pledges on his twenty-fifth birthday to change the path of his life in the next two years or commit suicide if he fails. The overall design concept of the film is rooted in realism, but allowed to contain elements that will remove the …
High Performance Low Voltage Power Mosfet For High-Frequency Synchronous Buck Converters, Boyi Yang
High Performance Low Voltage Power Mosfet For High-Frequency Synchronous Buck Converters, Boyi Yang
Electronic Theses and Dissertations
Power management solutions such as voltage regulator (VR) mandate DC-DC converters with high power density, high switching frequency and high efficiency to meet the needs of future computers and telecom equipment. The trend towards DC-DC converters with higher switching frequency presents significant challenges to power MOSFET technology. Optimization of the MOSFETs plays an important role in improving low-voltage DC-DC converter performance. This dissertation focuses on developing and optimizing high performance low voltage power MOSFETs for high frequency applications. With an inherently large gate charge, the trench MOSFET suffers significant switching power losses and cannot continue to provide sufficient performance in …
Understanding Phonological Memory Deficits In Boys With Attention-Deficit/Hyperactivity Disorder (Adhd): Dissociation Of Short-Term Storage And Articulatory Rehearsal Processes, Jennifer Bolden
Electronic Theses and Dissertations
The current study dissociated and examined the two primary components of the phonological working memory subsystem – the short-term store and articulatory rehearsal mechanism – in boys with ADHD (n = 18) relative to typically developing boys (n = 15). Word lists of increasing length (2, 4, and 6 words per trial) were presented to and recalled by children following a brief (3 s) interval to assess their phonological short-term storage capacity. Children’s ability to utilize the articulatory rehearsal mechanism to actively maintain information in the phonological short-term store was assessed using word lists at their established memory span but …
The Relationship Between Nonprofit Capacity Building, Organizational Learning And Organizational Effectiveness: A Case Study Of Strengthening Communities Fund Program In Central Florida, M L. Broxton
Electronic Theses and Dissertations
Nonprofit capacity building programs and program activities positively influence perceived organizational effectiveness. Being able to link nonprofit capacity building to organizational effectiveness is a paramount concern for both nonprofits seeking capacity building programming and those entities, be it foundations or government that fund capacity building initiatives and programs. Therefore being able to link nonprofit capacity building to organizational effectiveness and higher performance is crucial to ensure that both nonprofit organizations and funders continue to pursue and support capacity building programming. Through an examination of the developing hollow state and the resulting nonprofit capacity disparity this study demonstrates the purposeful need …
An Examination Of Issues Related To Professional Skepticism In Auditing, Erin Burrell Nickell
An Examination Of Issues Related To Professional Skepticism In Auditing, Erin Burrell Nickell
Electronic Theses and Dissertations
The third general standard of fieldwork requires auditors to maintain a skeptical mindset with regards to the collection and critical assessment of audit evidence. While professional skepticism is frequently referenced by professional standards, a lack of precision in defining the concept presumably leads to variation in how skepticism is exercised in practice. Drawing on theories from the fields of psychology, economics and organizational justice, this dissertation considers different perspectives of what constitutes sufficient professional skepticism and examines how those perspectives differ between audit practitioners and regulators. First, I consider competing perspectives of professional skepticism – neutral versus presumptive doubt – …
Computational Methods For Analyzing Rna Folding Landscapes And Its Applications, Yuan Li
Computational Methods For Analyzing Rna Folding Landscapes And Its Applications, Yuan Li
Electronic Theses and Dissertations
Non-protein-coding RNAs play critical regulatory roles in cellular life. Many ncRNAs fold into specific structures in order to perform their biological functions. Some of the RNAs, such as riboswitches, can even fold into alternative structural conformations in order to participate in different biological processes. In addition, these RNAs can transit dynamically between different functional structures along folding pathways on their energy landscapes. These alternative functional structures are usually energetically favored and are stable in their local energy landscapes. Moreover, conformational transitions between any pair of alternate structures usually involve high energy barriers, such that RNAs can become kinetically trapped by …
Systems Analysis For Urban Water Infrastructure Expansion With Global Change Impact Under Uncertainties, Cheng Qi
Electronic Theses and Dissertations
Over the past decades, cost-effectiveness principle or cost-benefit analysis has been employed oftentimes as a typical assessment tool for the expansion of drinking water utility. With changing public awareness of the inherent linkages between climate change, population growth and economic development, the addition of global change impact in the assessment regime has altered the landscape of traditional evaluation matrix. Nowadays, urban drinking water infrastructure requires careful long-term expansion planning to reduce the risk from global change impact with respect to greenhouse gas (GHG) emissions, economic boom and recession, as well as water demand variation associated with population growth and migration. …
Evaporation, Precipitation Dynamics And Instability Of Acoustically Levitated Functional Droplets, Abhishek Saha
Evaporation, Precipitation Dynamics And Instability Of Acoustically Levitated Functional Droplets, Abhishek Saha
Electronic Theses and Dissertations
Evaporation of pure and binary liquid droplets is of interest in thermal sprays and spray drying of food, ceramics and pharmaceutical products. Understanding the rate of heat and mass transfer in any drying process is important not only to enhance evaporation rate or vapor-gas mixing, but also to predict and control the final morphology and microstructure of the precipitates. Acoustic levitation is an alternative method to study micron-sized droplets without wall effects, which eliminates chemical and thermal contamination with surfaces. This work uses an ultrasonic levitation technique to investigate the vaporization dynamics under radiative heating, with focus on evaporation characteristics, …
Bst-Inspired Smart Flexible Electronics, Ya Shen
Bst-Inspired Smart Flexible Electronics, Ya Shen
Electronic Theses and Dissertations
The advances in modern communication systems have brought about devices with more functionality, better performance, smaller size, lighter weight and lower cost. Meanwhile, the requirement for newer devices has become more demanding than ever. Tunability and flexibility are both long-desired features. Tunable devices are ‘smart’ in the sense that they can adapt to the dynamic environment or varying user demand as well as correct the minor deviations due to manufacturing fluctuations, therefore making it possible to reduce system complexity and overall cost. It is also desired that electronics be flexible to provide conformability and portability. Previously, tunable devices on flexible …
Elements Of Azeri's Independent Foreign Policy: Energy, Geography, And Global Powers Rivalry., Muniz Omar Vera
Elements Of Azeri's Independent Foreign Policy: Energy, Geography, And Global Powers Rivalry., Muniz Omar Vera
Electronic Theses and Dissertations
This work applies geopolitical concepts to elucidate how geography, energy, and rivalries among global powers affect the Azeri foreign policy. This research work uses a deductive method of qualitative research and a longitudinal analysis of qualitative variables. This study first reviews the most significant academic works in the field to delineate the framework of Azerbaijani foreign policy. Next, it discusses the geographical features of the Azeri landlocked territory and its influence over foreign policy. Then the study presents how Azerbaijan uses its energy as a leverage tool in its foreign policy. The fourth chapter analyzes the current competition between two …
Multi-Level Safety Performance Functions For High Speed Facilities, Mohamed Ahmed
Multi-Level Safety Performance Functions For High Speed Facilities, Mohamed Ahmed
Electronic Theses and Dissertations
High speed facilities are considered the backbone of any successful transportation system; Interstates, freeways, and expressways carry the majority of daily trips on the transportation network. Although these types of roads are relatively considered the safest among other types of roads, they still experience many crashes, many of which are severe, which not only affect human lives but also can have tremendous economical and social impacts. These facts signify the necessity of enhancing the safety of these high speed facilities to ensure better and efficient operation. Safety problems could be assessed through several approaches that can help in mitigating the …
Towards Scalable Nanomanufacturing: Modeling The Interaction Of Charged Droplets From Electrospray Using Gpu, Weiwei Yang
Towards Scalable Nanomanufacturing: Modeling The Interaction Of Charged Droplets From Electrospray Using Gpu, Weiwei Yang
Electronic Theses and Dissertations
Electrospray is an atomization method subject to intense study recently due to its monodispersity and the wide size range of droplets it can produce, from nanometers to hundreds of micrometers. This thesis focuses on the numerical and theoretical modeling of the interaction of charged droplets from the single and multiplexed electrospray. We studied two typical scenarios: large area film depositions using multiplexed electrospray and fine pattern printings assisted by linear electrostatic quadrupole focusing. Due to the high computation power requirement in the unsteady n-body problem, graphical processing unit (GPU) which delivers 10 Tera flops in computation power is used to …
A Retrospective Analysis And Field Study Of Nanotechnology Related Ergonomic Risk In Industries Utilizing Nanomaterials, Wanda Greaves-Holmes
A Retrospective Analysis And Field Study Of Nanotechnology Related Ergonomic Risk In Industries Utilizing Nanomaterials, Wanda Greaves-Holmes
Electronic Theses and Dissertations
The National Science Foundation estimates that two million skilled nanotechnology workers will be needed world wide by 2015 – one million of them in the United States (2001). In the absence of scientific clarity about the potential health effects of occupational exposure to nanoparticles, guidance in decision making about hazards, risk, and controls takes on new importance. Currently, guiding principles on personal protective equipment for workers who come in contact with nanomaterials have not been standardized universally. Utilizing the NASATLX, this dissertation investigates the adequacy and shortcomings of research efforts that seek to determine whether or not occupational exposure to …
Three Essays On Investments: An Examination Of The Effects Of Diversification And Taxes, Matthew Hurst
Three Essays On Investments: An Examination Of The Effects Of Diversification And Taxes, Matthew Hurst
Electronic Theses and Dissertations
Chapter 1 examines the effect of property-type diversification in equity real estate investment trusts (REITs) from 1995 to 2006. A strong positive relationship is documented between property-type diversification and return on assets, return on equity, and Tobin’s Q. The diversification benefit comes from both the ability to select better performing property types in “hot” markets and the limited exposure to poorly performing property types in “cold” markets. Diversified REITs produce higher cash flows relative to equity as a result of a broader opportunity set; moreover, return on assets increases with the degree of diversification, which suggests significant shielding to property-type …
Investigation Of Breakdown Power During Electrical Breakdown Of Aligned Array Of Carbon Nanotubes, Udai Bhanu
Investigation Of Breakdown Power During Electrical Breakdown Of Aligned Array Of Carbon Nanotubes, Udai Bhanu
Electronic Theses and Dissertations
Massively parallel arrays of single walled carbon nanotubes (SWNT) have attracted significant research interests because of their ability to (i) average out inhomogeneities of individual SWNTs, (ii) provide larger on currents, and (iii) reduce noise to provide higher cutoff frequency for radio frequency applications. However, the array contains both metallic and semiconducting SWNTs and the presence of metallic nanotube in an aligned array negatively affects the device properties. Therefore, it is essential to selectively remove metallic nanotubes to obtain better transistor properties. It was recently found that although such a selective removal can be effective for a low density array, …
Evaluating Improvisation As A Technique For Training Pre-Service Teachers For Inclusive Classrooms, Theresa Becker
Evaluating Improvisation As A Technique For Training Pre-Service Teachers For Inclusive Classrooms, Theresa Becker
Electronic Theses and Dissertations
Improvisation is a construct that uses a set of minimal heuristic guidelines to create a highly flexible scaffold that fosters extemporaneous communication. Scholars from diverse domains: such as psychology, business, negotiation, and education have suggested its use as a method for preparing professionals to manage complexity and think on their feet. A review of the literature revealed that while there is substantial theoretical scholarship on using improvisation in diverse domains, little research has verified these assertions. This dissertation evaluated whether improvisation, a specific type of dramatic technique, was effective for training pre-service teachers in specific characteristics of teacher-child classroom interaction, …
Use Of An Activated Magnesium/Cosolvent System For The Desorption And Degradation Of Polycyclic Aromatic Hydrocarbons And Their Oxygenated Derivatives In Contaminated Soils, Marc Elie
Electronic Theses and Dissertations
The contamination of soils, with polycyclic aromatic hydrocarbons (PAHs), remains a widespread environmental concern. In the past two decades, many physical, chemical and biological methods have been developed and evaluated for the degradation of PAHs. However, due to their low aqueous solubility, high sorption affinity, hydrophobicity and recalcitrance, the environmental remediation of PAHs in soil continues to be economically challenging. In addition to PAH contamination, the presence of oxygenated derivatives of PAHs (OPAHs), in soils, has increasingly become a concern due to their greater toxic properties compared to parent PAH compounds. To date, no investigations on OPAH-remediation methods have been …
Photochemistry And Applications Of Diels-Alder Adducts And Photoacids In Materials Science, Valentine Johns
Photochemistry And Applications Of Diels-Alder Adducts And Photoacids In Materials Science, Valentine Johns
Electronic Theses and Dissertations
In chapter I Photo-retro-Diels-Alder (PrDA) reactions of a variety of Diels Alder (DA) adducts were studied. Experimental results showed that the photoreactivity (quantum yield) depends on the electron-donating ability of the diene component and the electronwithdrawing ability of the dienophile component. The mechanism was studied by trapping the reaction intermediate, O2 quenching and femtosecond time-resolved absorption spectroscopy. All the results support a mechanism that involves a charge-separated intermediate generated from a singlet excited state. The PrDA reaction may find applications in photoresponsive materials, photolithography, drug delivery and mechanistic research. Chapter II shows two applications of the PrDA reaction. The first, …
Design And Characterization Of High Temperature Packaging For Wide-Bandgap Semiconductor Devices, Brian Grummel
Design And Characterization Of High Temperature Packaging For Wide-Bandgap Semiconductor Devices, Brian Grummel
Electronic Theses and Dissertations
Advances in wide-bandgap semiconductor devices have increased the allowable operating temperature of power electronic systems. High-temperature devices can benefit applications such as renewable energy, electric vehicles, and space-based power electronics that currently require bulky cooling systems for silicon power devices. Cooling systems can typically be reduced in size or removed by adopting wide-bandgap semiconductor devices, such as silicon carbide. However, to do this, semiconductor device packaging with high reliability at high temperatures is necessary. Transient liquid phase (TLP) die-attach has shown in literature to be a promising bonding technique for this packaging need. In this work TLP has been comprehensively …
Counselor Education Doctoral Students' Levels Of Research Self-Efficacy, Interest In Research, And Research Mentoring: A Cross-Sectional Investigation, John Petko
Electronic Theses and Dissertations
Doctoral counselor education programs are charged to develop effective researchers; however, limited investigations have examined research constructs in counselor educators-in-training. Therefore, this study will investigate a national sample of doctoral counselor education students’ levels of research self-efficacy (Research Self-Efficacy Scale; Greeley, et. al 1989), interest in research (Interest in Research Questionnaire; Bishop & Bieschke, 1994), and research mentoring (Research Mentoring Experiences Scale; Hollingsworth & Fassinger, 2002). A cross-sectional, correlational research design will be used to test if doctoral counselor education students’ year of preparation (1st, 2nd, or 3rd year) predicts their research self-efficacy, interest in research, and research mentoring scores. …
Infectious Disease Risks In Developing Countries: A Non-Market Valuation Exercise, Shreejata Samajpati
Infectious Disease Risks In Developing Countries: A Non-Market Valuation Exercise, Shreejata Samajpati
Electronic Theses and Dissertations
This dissertation focuses on the non-market valuation of health-risks of malaria, an infectious disease that imposes a substantive public health burden across the globe, hitting particularly hard the tropical developing nations of Africa and Asia. The United Nations Millennium Development Goals include malaria control as a priority and large investments are underway to promote effective prevention and treatment. Despite such concerted supply-side efforts, malaria-related mortality and morbidity still abound due to a complex interface of factors like climate-change, poverty, inadequate control behavior, infection and prevention externalities, parasite resistance etc. This research project digs into the demand-side of the health problem, …
White And Black Womanhoods And Their Representations In 1920s American Advertising, Lindsey L. Turnbull
White And Black Womanhoods And Their Representations In 1920s American Advertising, Lindsey L. Turnbull
Electronic Theses and Dissertations
The 1920s represented a time of tension in America. Throughout the decade, marginalized groups created competing versions of a proper citizen. African-Americans sought to be included in the national fabric. Racism encouraged solidarity, but black Americans did not agree upon one method for coping with, and hopefully ending, antiblack racism. White women enjoyed new privileges and took on more roles in the public sphere. Reactionary groups like the Ku Klux Klan found these new voices unsettling and worrisome and celebrated a white, nativeborn, Protestant and male vision of the American citizen. Simultaneously, technological innovations allowed for advertising to flourish and …
Superintendent Second-Order Change Leadership To Achieve Equity And Access To Excellence In A Large Florida School District, Paul Wilhite
Superintendent Second-Order Change Leadership To Achieve Equity And Access To Excellence In A Large Florida School District, Paul Wilhite
Electronic Theses and Dissertations
The purpose of this study was to determine the perceptions of 244 school- and district-based administrators who were employed in a Florida school district from 2003- 2011 regarding superintendent second-order change leadership decisions and events to achieve equity and access to excellence for all students in the school district. Interviews were also conducted with 11 active and retired school-based and district-based administrators to specifically address any factors that led to equity and access to excellence as well as any challenges the school district faced when implementing those actions and decisions. Quantitative data were used for a historical comparison of the …
The Relationship Between Mentoring And Social Status At Work: A Social Network Status Study, Lakeesha A. Flowers
The Relationship Between Mentoring And Social Status At Work: A Social Network Status Study, Lakeesha A. Flowers
Electronic Theses and Dissertations
Mentoring is an important means of developing talent. Typically, mentoring involves two individuals – a mentor, who provides career development and psychosocial support to a less experienced counterpart (the protégé). Because mentoring is related to several desired outcomes such as career advancement, and job satisfaction, it is important to understand which individual characteristics are important to obtaining or providing effective mentoring. It is also necessary to examine potential but unconfirmed outcomes of mentoring such as social network status. This study examined the relationships between several individual characteristics, namely social intelligence and emotional intelligence, and mentoring relationships. In addition, this study …
Predictors Of Immunosuppressant Adherence In Long-Term Renal Transplant Recipients, Sandra J. Galura
Predictors Of Immunosuppressant Adherence In Long-Term Renal Transplant Recipients, Sandra J. Galura
Electronic Theses and Dissertations
To sustain the health and viability of renal transplants, adherence to immunosuppressant therapy (IST) medications is critical. Studies continue to identify decreased adherence rates as time from transplant increases (Chisholm-Burns, Kwong, Mulloy & Spivey, 2008; Chisholm, Lance, Mulloy, 2005; Chisholm, Mulloy, & DiPiro, 2005; Nivens & Thomas, 2009). While previous research has explored the effect of variables known to influence IST adherence in adult renal transplant recipients, limited studies have explored these variables in a population of renal transplant recipients with longer time posttransplant intervals. The purpose of this study was to examine demographic variables, time posttransplant, immunosuppressive agents, health …
Resilience Of Bridges Following Aftershocks, Diego Francisco Espinosa
Resilience Of Bridges Following Aftershocks, Diego Francisco Espinosa
Electronic Theses and Dissertations
The ability to predict the reduction in capacity of a structure after an earthquake is vital in the process of assessing a structure after a main-shock or an after-shock. Main-shocks are normally followed by a few aftershocks in a short period of time. Researchers in the past have focused for the most part on the effects of main-shocks on buildings. Very little research has been performed on the ability to predict the reduction in capacity of bridges in aftershocks. This thesis focuses on providing a way of assessing the reduction in capacity for main-shocks as compared to aftershocks and the …
Non-Reciprocal Wave Transmission In Integrated Waveguide Array Isolators, Tony Yatming Ho
Non-Reciprocal Wave Transmission In Integrated Waveguide Array Isolators, Tony Yatming Ho
Electronic Theses and Dissertations
Non-reciprocal wave transmission is a phenomenon witnessed in certain photonic devices when the wave propagation dynamics through the device along one direction differs greatly from the dynamics along the counter-propagating direction. Specifically, it refers to significant power transfer occurring in one direction, and greatly reduced power transfer in the opposite direction. The resulting effect is to isolate the directionality of wave propagation, allowing transmission to occur along one direction only. Given the popularity of photonic integrated circuits (PIC), in which all the optical components are fabricated on the same chip so that the entire optical system can be made more …