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2016

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Nucleophile Promoted Gold Redox Catalysis With Diazonium: Cbr, C-S And C-P Bond Formation Through Catalytic Sandmeyer Coupling, Haihui Peng, Rong Cai, Chang Xu, Hao Chen, Xiaodong Shi Jan 2016

Nucleophile Promoted Gold Redox Catalysis With Diazonium: Cbr, C-S And C-P Bond Formation Through Catalytic Sandmeyer Coupling, Haihui Peng, Rong Cai, Chang Xu, Hao Chen, Xiaodong Shi

Faculty & Staff Scholarship

Gold-catalyzed C-heteroatom (C-X) coupling reactions are evaluated without using sacrificial oxidants. Vital to the success of this methodology is the nucleophile-assisted activation of aryldiazonium salts, which could be an effective oxidant to convert Au(I) to Au(III) even without the addition of assisting ligand or photocatalyst. By accelerating reaction kinetics to outcompete C-C homo-coupling or diazonium dediazoniation, gold-catalyzed Sandmeyer reactions were achieved with different nucleophiles, forming C-Br, C-S and C-P bonds in high yields and selectivity.

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Effect Of Spatial Inhomogeneities On The Membrane Surface On Receptor Dimerization And Signal Initiation, Romica Kerketta, Adam M. Halasz, Mara P. Steinkamp, Bridget S. Wilson, Jeremy S. Edwards Jan 2016

Effect Of Spatial Inhomogeneities On The Membrane Surface On Receptor Dimerization And Signal Initiation, Romica Kerketta, Adam M. Halasz, Mara P. Steinkamp, Bridget S. Wilson, Jeremy S. Edwards

Faculty & Staff Scholarship

Important signal transduction pathways originate on the plasma membrane, where microdomains may transiently entrap diffusing receptors. This results in a non-random distribution of receptors even in the resting state, which can be visualized as “clusters” by high resolution imaging methods. Here, we explore how spatial in-homogeneities in the plasma membrane might influence the dimerization and phosphorylation status of ErbB2 and ErbB3, two receptor tyrosine kinases that preferentially heterodimerize and are often co-expressed in cancer. This theoretical study is based upon spatial stochastic simulations of the two-dimensional membrane landscape, where variables include differential distributions and overlap of transient confinement zones (“domains”) …

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Topological Crystalline Insulator In A New Bi Semiconducting Phase, F. Munoz, M. G. Vergniory, T. Rauch, J. Henk, E. V. Chulkov, I. Mertig, S. Botti, M. A. L. Marques, A. H. Romero Jan 2016

Topological Crystalline Insulator In A New Bi Semiconducting Phase, F. Munoz, M. G. Vergniory, T. Rauch, J. Henk, E. V. Chulkov, I. Mertig, S. Botti, M. A. L. Marques, A. H. Romero

Faculty & Staff Scholarship

Topological crystalline insulators are a type of topological insulators whose topological surface states are protected by a crystal symmetry, thus the surface gap can be tuned by applying strain or an electric field. In this paper we predict by means of ab initio calculations a new phase of Bi which is a topological crystalline insulator characterized by a mirror Chern number nM =−2, but not a Z2 strong topological insulator. This system presents an exceptional property: at the (001) surface its Dirac cones are pinned at the surface high-symmetry points. As a consequence they are also protected by time-reversal symmetry …

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Paleosol Development And Trace Fossils In The Upper Triassic Cooper Canyon Formation Of The Dockum Group In Andrews County, Texas, Michael Charles Gratzer Jan 2016

Paleosol Development And Trace Fossils In The Upper Triassic Cooper Canyon Formation Of The Dockum Group In Andrews County, Texas, Michael Charles Gratzer

Honors Theses

It is unknown whether a relationship exists between paleosol development and the number of burrows in a paleosol. It is also unknown whether a relationship exists between the number of burrows in a paleosol and the diameters of those burrows. This paper details the methods, results, and conclusions of an investigation of these relationships. I assess the development of several paleosols in a core sample of the Upper Triassic Cooper Canyon Formation of the Dockum Group from well B-133 in Andrews County, Texas, using development scales based on methods from Bown and Kraus (1993) and Abels et al. (2013). I …

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Calculating Liquefaction Potential Of Northern Mississippi Using Shear Wave Data, Peshani Herath Jan 2016

Calculating Liquefaction Potential Of Northern Mississippi Using Shear Wave Data, Peshani Herath

Honors Theses

The potential for liquefaction can be determined using the Liquefaction Potential Index (LPI). The LPI takes into account the thickness of the liquefiable layers and the factors of safety with respect to depth. This study creates a hybrid method for determining the LPI for different locations in Northern Mississippi. It calculates an average CSR for the region using existing borehole information. The CRR is then calculated using shear wave velocity profile data from a MASW survey. The LPI obtained from this process is compared to LPI values calculated using CPT data and borehole shear wave data. Surface shear wave velocity …

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Implementation Of An Enhanced System Of Motion Tracking For Virtual Reality Using 'Common Off-The-Shelf' Items, Sean M. O'Hara Jan 2016

Implementation Of An Enhanced System Of Motion Tracking For Virtual Reality Using 'Common Off-The-Shelf' Items, Sean M. O'Hara

Honors Theses

My project was tasked and guided by Dr. Adam Jones of the University of Mississippi's Computer Science Department to design and implement an improved system of infrared motion tracking for virtual reality. The enhancements allow Dr. Jones to use motion tracking for VR in ways that he previously could not, and these improvements include the ability to track multiple objects along with a foundation for expanding my project's use to work with a multiple camera setup for motion tracking. The hardware used in my project made use of Dr. Jones' supply of technology for development and research within the area …

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It's About Time: The Effectiveness Of Time Perception As A Measurement Of Cognitive Load, Victoria Robinson Jan 2016

It's About Time: The Effectiveness Of Time Perception As A Measurement Of Cognitive Load, Victoria Robinson

Honors Theses

This study examines the effectiveness of time perception as a measurement of cognitive load. The purpose of this research is to determine whether the concept of time perception can efficiently indicate high or low cognitive load in a task, and to compare this measurement to the standard mental effort rating scale that is typically used to measure cognitive load. In this study, participants completed both simple and complicated math problems at their own pace. After they were told to stop, participants either rated their level of mental effort used in the task, or wrote down how long they believed it …

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The Theoretical Argument For Disproving Asymptotic Upper-Bounds On The Accuracy Of Part-Of-Speech Tagging Algorithms: Adopting A Linguistics, Rule-Based Approach, William Foley Jan 2016

The Theoretical Argument For Disproving Asymptotic Upper-Bounds On The Accuracy Of Part-Of-Speech Tagging Algorithms: Adopting A Linguistics, Rule-Based Approach, William Foley

Honors Theses

This paper takes a deep dive into a particular area of the interdisciplinary domain of Computational Linguistics, Part-of-Speech Tagging algorithms. The author relies primarily on scholarly Computer Science and Linguistics papers to describe previous approaches to this task and the often-hypothesized existence of the asymptotic accuracy rate of around 98%, by which this task is allegedly bound. However, after doing more research into why the accuracy of previous algorithms have behaved in this asymptotic manner, the author identifies valid and empirically-backed reasons why the accuracy of previous approaches do not necessarily reflect any sort of general asymptotic bound on the …

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High Frequency Trading 101: Regulatory Impact In American And European Markets, Yasmine Elisabeth Allen Jan 2016

High Frequency Trading 101: Regulatory Impact In American And European Markets, Yasmine Elisabeth Allen

Honors Theses

High frequency trading has impacted the American and European financial markets through its advanced algorithms, rapid speed, and preferential treatment from purchasing information and co-location from exchanges. High frequency trading alone is not harmful, but without proper regulations it can hurt the financial markets. In this thesis, I researched implemented regulations, the consequences of those regulations, and pending new regulations. To gather information, I studied relevant research on the topic, including numerous academic articles and books to get a broader view of the issues. Through my research, I have found that previous regulations implemented by American and European regulatory agencies …

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A Framework For Verification Of Signal Propagation Through Sequential Nanomagnet Logic Devices, Alexander Gunter Jan 2016

A Framework For Verification Of Signal Propagation Through Sequential Nanomagnet Logic Devices, Alexander Gunter

Honors Theses

Nanomagnet Logic is an emerging technology for low-power, highly-scalable implementation of quantum-dot cellular automata. Feedback permits reuse of logical subroutines, which is a desired functionality of any computational device. Determining whether feedback is feasible is essential to assessing the robustness of nanomagnet logic in any pipelined computing design. Therefore, development of a quantitative approach for verification of feedback paths is critical for development of design and synthesis tools for nanomagnet logic structures. In this paper, a framework for verification of sequential nanomagnet logic devices is presented. A set of definitions for canonical alignment and state definitions for NML paths are …

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An Exploration Of Modern Financial Reporting, Jane C. Case Jan 2016

An Exploration Of Modern Financial Reporting, Jane C. Case

Honors Theses

The following are solutions to a series of case studies in financial reporting completed in fulfillment of the requirements of the honors ACCY 420 course at the University of Mississippi for both the fall and spring semester of the 2015/2016 academic year. Each case study focused on a particular area of financial reporting for a specific company or set of companies in the same industry. Each case contained a problem set requiring comprehension of accounting concepts, analysis of financial stability, mathematical calculations, and preparation of journal entries and financial statements.

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The Technician Behind The Artist: Where Science Meets Art, Joella Vaughnn Jan 2016

The Technician Behind The Artist: Where Science Meets Art, Joella Vaughnn

Honors Theses

The thesis has two purposes: to evaluate the difference between oil, acrylic, gouache, and encaustic paint for the purpose of glazing and to integrate engineering and artistic principles into this thesis. My final evaluation across the four paints is that oil has the highest performing glaze. I believe it is the best glazer because time is not a constraint for me as an artist. If an artist has a time constraint on their painting, I recommend using acrylic mixed with an acrylic polymer medium as a glaze because the drying time is much faster than oil. I discovered that gouache …

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An Examination Of The College Major Decisions Of Students At The University Of Mississippi, Jonathan P. Evans Jan 2016

An Examination Of The College Major Decisions Of Students At The University Of Mississippi, Jonathan P. Evans

Honors Theses

Factors such as socio-economic status affect students' level of educational aspiration. Furthermore, major (and thus career choice) may be influenced by race or gender. This study demonstrates the effects of academic aptitude, race, gender, first generation status, and importance of expected future earnings on undergraduate students' college major decision. More specifically, this study examines if these factors lead to an increase or decrease in the probability of students choosing a major in a specific field. The likelihood of choosing a major in a specific field is relative a baseline category, which can be changed.

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Study Of An Active-State Cb1 Receptor Model And Jwh Compound Interactions To Predict New Emerging Synthetic Cannabinoids, Kelsey Leigh Pettus Jan 2016

Study Of An Active-State Cb1 Receptor Model And Jwh Compound Interactions To Predict New Emerging Synthetic Cannabinoids, Kelsey Leigh Pettus

Honors Theses

In recent years, a new class of compounds, called synthetic cannabinoids, have made their appearance in the market as a substitute for illegal marijuana or its constituent natural cannabinoids. These compounds, which are active at the same G- protein coupled receptors (GPCRS) as cannabinoids, are continuing to gain popularity because of the same cannabinoid-like effects they create. Though two cannabinoid receptors have been identified in humans, known as CB1 and CB2, synthetic cannabinoid activity at the CB1 receptor has been the focus of much research regarding synthetic cannabinoid ligand binding. In this study, the structure of the CB1 receptor is …

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Statistical Analysis Of Arsenic Concentrations In Subsurface Soils At The University Of Mississippi Field Station, David Thomas Webb Jan 2016

Statistical Analysis Of Arsenic Concentrations In Subsurface Soils At The University Of Mississippi Field Station, David Thomas Webb

Honors Theses

The purpose of this investigation is to determine how arsenic concentration varies in soils with respect to soil structures, grain size, soil type, and depth. The investigation was conducted at the University of Mississippi Field Station (UMFS). The UMFS is located in Abbeville, MS and is roughly 700 acres in size. It includes ponds and former agricultural fields, and lies within an internally draining basin. Seven boreholes were drilled using a direct push geoprobe and sampled. The cores obtained from the borings were then cut at one foot intervals, producing a total of 90 soil samples. Each sample was observed …

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A Neural Network Approach To Handwriting Recognition In The Codex A, Eleanor C. Anthony Jan 2016

A Neural Network Approach To Handwriting Recognition In The Codex A, Eleanor C. Anthony

Honors Theses

In this research, an attempt to create a neural network classifier for the Latin uncial alphabet found in the Codex A, a late fourth century manuscript held by the Archivo Capitolare in Vercelli, Italy and the oldest of the Latin Gospels, is outlined. Training data collection methods, as well as image processing and artificial data creation methods used for expanding the training set, are discussed, as is their contribution to the success of the neural networks. While successful results are achieved for the testing sets, classification of new image data is largely unsuccessful. Potential improvement and avenues for expanding the …

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Paleolithic Protection In A Western World: A Look Into Preagricultural Nutrition As A Remedy For The Diseases Of Civilization, Emilie R. Caron Jan 2016

Paleolithic Protection In A Western World: A Look Into Preagricultural Nutrition As A Remedy For The Diseases Of Civilization, Emilie R. Caron

Honors Theses

The aim of this investigation is to discover the associations of the Western diet to noncommunicable diseases and to determine if a reversion to a Paleolithic diet will provide treatment and prevention of these diseases. Noncommunicable diseases, otherwise known as Diseases of Civilization, are lifestyle influenced diseases and encompass obesity, diabetes mellitus, cardiovascular disease, and associated cancers. Incidences of these diseases have skyrocketed in the past century and show no signs of decline. Since 1900, the death rates due to heart disease and cancer have risen to account for 47% of total deaths in the United States in 2010. (Tippett, …

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Strange Gospels, Emily R. Duhe Jan 2016

Strange Gospels, Emily R. Duhe

Honors Theses

This thesis is a collection of poetry and short stories dealing with different kinds and perspectives of strangeness, particularly with the concept of the Other.

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Providing A Prescription Of School Choice To Improve Mississippi's K-12 Educational System: A Dose Of Education Savings Accounts Mixed With Charter Schools And Private School Vouchers, Eric Bennett Jan 2016

Providing A Prescription Of School Choice To Improve Mississippi's K-12 Educational System: A Dose Of Education Savings Accounts Mixed With Charter Schools And Private School Vouchers, Eric Bennett

Honors Theses

This thesis investigates the research surrounding school choice programs, such as charter schools, private school vouchers, and education savings accounts (ESAs). My research investigates academic effects, fiscal effects, impact upon low-income and minority students, parental involvement and satisfaction, and public opinion of school choice programs. The ultimate goal of this thesis is to answer my central research question of, What is the ideal school choice picture for Mississippi, with two goals in mind: 1.) To rescue children currently trapped within underperforming schools without the means to transfer to a higher quality school. 2.) To reform the K-12 educational system in …

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An Experimental Investigation Of A Reinforced Steel Frame Via Structural Dynamics, Ethan Baker Jan 2016

An Experimental Investigation Of A Reinforced Steel Frame Via Structural Dynamics, Ethan Baker

Honors Theses

With the current decaying condition of America's infrastructure, a need for a more efficient inspection method is evident. The combination of Structural Health Monitoring data and data analysis tools could be a solution. In this study, laboratory data was captured for both a baseline bare-frame and a wooden wall reinforced steel structure. A MATLAB®-based computer program, the in-house SHE™ accomplishes an array of tasks, including signal processing and modal decomposition among others. A SAP2000® model contextualized the experimental data by producing trend behaviors, such as mode order or common mode shapes. Both sequential and cumulative reinforcement detection was performed on …

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The Effects Of High Literacy Demands In Mathematics On International Students, Fiona Faulkner, Clare O'Hara, Mark Prendergast Jan 2016

The Effects Of High Literacy Demands In Mathematics On International Students, Fiona Faulkner, Clare O'Hara, Mark Prendergast

Articles

Project Maths is an ambitious reform of Irish post-primary education. It involves changes to what students learn in mathematics, how they learn it and how they will be assessed. There is a much greater emphasis placed on student understanding of mathematical concepts, with increased use of contexts and applications that will enable students to relate mathematics to their everyday experiences. The assessment reflects the different emphasis on problem solving and applications in the teaching and learning of mathematics and there is a much greater emphasis on reading and understanding the problems. Hence there is a greater emphasis on student’s English …

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Racial Disparities In Cognitive Performance In Older Adults With Diabetes, Samantha Kaytana Henry Jan 2016

Racial Disparities In Cognitive Performance In Older Adults With Diabetes, Samantha Kaytana Henry

All ETDs from UAB

ABSTRACT Racial disparities on measures of cognitive performance are well-documented. The purpose of the current study was to examine education quality and health factors in explaining racial differences in cognitive performance. It was hypothesized that significant differences in test performance between African Americans and Caucasians would remain robust despite controlling for demographics. However, accounting for education quality and diabetes-related factors was expected to reduce racial differences to nonsignificance. Additionally, racial differences between objective test performance and subjective memory ratings were anticipated. The sample consisted of 247 older African American and Caucasian adults with diabetes in the Birmingham area. Participants completed …

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Extrema Based Signal Transforms For Biomedical Signal Analysis, Bhadhan Roy Joy Jan 2016

Extrema Based Signal Transforms For Biomedical Signal Analysis, Bhadhan Roy Joy

All ETDs from UAB

Signal transforms are very important tools to extract useful information from scientific, engineering, or medical raw data. Unfortunately, traditional transform techniques impose unrealistic assumptions on the signal, often producing erroneous interpretation of results. Well-known integral transforms, such as short time Fourier transform, though have fast implementation algorithms (e.g., FFT), are still computationally expensive. They have multiple parameters that should be tuned, and it is not readily clear how to tune them for long-duration nonstationary signals. To solve these problems, one needs a computationally inexpensive transform with no parameters that will highlight important data aspects. We propose a simple transform based …

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Fastnumerics: Compiling Matlab To C++, Sujan Khadka Jan 2016

Fastnumerics: Compiling Matlab To C++, Sujan Khadka

All ETDs from UAB

and bone strength feedback. Participants, through computer surveys, rated perceived

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Perturbation Formulas For Gross-Pitaevskii Equation With Periodic Potential, Seonguk Kim Jan 2016

Perturbation Formulas For Gross-Pitaevskii Equation With Periodic Potential, Seonguk Kim

All ETDs from UAB

Gross-Pitaevskii equation (GPE), which was introduced in early 1960s, is widely used in several areas, such as condensed matter physics, and nonlinear optics. The purpose of this thesis is to carry out mathematical studies for GPE. We concentrate on extended solutions of GPE. This thesis mainly contains three parts. The first part is to investigate explicit perturbation formulas for stationary solutions close to a plane wave and their corresponding energies for the nonlinear polyharmonic equation when 2l > n, where n is dimension and l is a power of the Laplacian. The main idea is to consider a non-linear term as …

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The Lived Experiences Of African American Male School Leaders In Suburban School Districts, Dexter Clayton Leblanc Jan 2016

The Lived Experiences Of African American Male School Leaders In Suburban School Districts, Dexter Clayton Leblanc

All ETDs from UAB

The purpose of this qualitative study was to explore the personal, professional, and social experiences of African American male school leaders in suburban school districts. Suburban school districts were defined as residential areas on the outskirts of metropolitan areas that often have higher standardized test scores and successful programs with higher rates of college attendance. The area also has higher family incomes and few African American residents. Using a phenomenological design allowed the researcher to inquire and gather data through open-ended, face-to-face, interviews with study participants. Critical Race Theory was used to frame this study. The researcher identified 10African American …

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Writing Centers Across The Curriculum: Reimagining Writing Centers Through Writing Across The Curriculum And Human Resource Management, Adele Leon Jan 2016

Writing Centers Across The Curriculum: Reimagining Writing Centers Through Writing Across The Curriculum And Human Resource Management, Adele Leon

All ETDs from UAB

Current research in Writing across the Curriculum theory and writing center assessment shows concerns for students being able to connect their writing to their disciplines. However, little is being said about connecting writing centers to WAC programs, and less is being said about having writing centers take on the role of a WAC program. This thesis addresses the possibility of the latter, and creating a Writing Centers Across the Curriculum program to better help students across the disciplines connect their writing to their majors. In the creation of a WCAC program, a strong focus on training writing center tutors through …

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Bright Galaxies At Hubble's Redshift Detection Frontier : Preliminary Results And Design From The Redshift Z ~ 9-10 Borg Pure-Parallel Hst Survey., V. Calvi, M. Trenti, M. Stiavelli, P. A. Oesch, L. Bradley, K. B. Schmidt, D. Coe, G. Brammer, S. Bernard, R. J. Bouwens, D. Carrasco, C. M. Carollo, Benne W. Holwerda, J. W. Mackenty, C. A. Mason, J. M. Shull, T. Treu Jan 2016

Bright Galaxies At Hubble's Redshift Detection Frontier : Preliminary Results And Design From The Redshift Z ~ 9-10 Borg Pure-Parallel Hst Survey., V. Calvi, M. Trenti, M. Stiavelli, P. A. Oesch, L. Bradley, K. B. Schmidt, D. Coe, G. Brammer, S. Bernard, R. J. Bouwens, D. Carrasco, C. M. Carollo, Benne W. Holwerda, J. W. Mackenty, C. A. Mason, J. M. Shull, T. Treu

Faculty and Staff Scholarship

We present the first results and design from the redshift z ∼ 9–10 Brightest of the Reionizing Galaxies Hubble Space Telescope survey BoRG[z9–10], aimed at searching for intrinsically luminous unlensed galaxies during the first 700 Myr after the Big Bang. BoRG[z9–10] is the continuation of a multi-year pure-parallel near-IR and optical imaging campaign with the Wide Field Camera 3. The ongoing survey uses five filters, optimized for detecting the most distant objects and offering continuous wavelength coverage from λ = 0.35 μm to λ = 1.7 μm. We analyze the initial ∼130 arcmin2 of area over 28 independent lines of …

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Joint Intervention In Opposing Pathways, Pi3k/Akt And Tgf-Beta, With Px-866 And Raloxifene, To Alter Gene Expression And Suppress Estrogen Receptor-Positive Breast Cancer Cell Proliferation, Gregory William Peek Jan 2016

Joint Intervention In Opposing Pathways, Pi3k/Akt And Tgf-Beta, With Px-866 And Raloxifene, To Alter Gene Expression And Suppress Estrogen Receptor-Positive Breast Cancer Cell Proliferation, Gregory William Peek

All ETDs from UAB

For each regulatory pathway implementing environmental or internal messages, there is at least one additional pathway to relay a message to override or modify the original message, in the event of new or conflicting input. The opposing pathway may also be an instrument for negative feedback or redundancy as well as for transmission of additional encountered conditions or considerations. Because the multiple disease conditions based on aberrant cell cycle proliferation often require a level of correction independent of opposing feedback, selection of opposing pathways for complementary joint input is a practical approach to cancer and related proliferation-associated diseases. Accordingly, I …

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The Administrative Roles And Experiences Of School Principals In Implementing The 'Educate Alabama Teacher Evaluation System': A Phenomenological Study Of The Perspectives Of Alabama School Principals, Etheldia Reynolds Jan 2016

The Administrative Roles And Experiences Of School Principals In Implementing The 'Educate Alabama Teacher Evaluation System': A Phenomenological Study Of The Perspectives Of Alabama School Principals, Etheldia Reynolds

All ETDs from UAB

The purpose of this phenomenological study was to explore the perspectives of Alabama school principals’ administrative roles and experiences in implementing the Educate Alabama Teacher Evaluation System. School principals are second only to teachers in improving students’ academic achievement. In many cases, policy makers have made student performance a central aspect of teacher evaluation (Donaldson, 2012; Everson, Feinauer, & Sudweeks, 2013). Principals are faced with reflecting on practices that impact teaching behaviors and student achievement. In 2009, the Alabama Department of Education developed the Educate Alabama Teacher Evaluation System as a formative assessment tool to guide teacher’s professional growth and …

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