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Theses and Dissertations

Theses/Dissertations

2014

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Institution
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Qatari Foreign Policy And The Arab Spring: From Mediation To Intervention, Basma Mahmoud Eletreby Dec 2014

Qatari Foreign Policy And The Arab Spring: From Mediation To Intervention, Basma Mahmoud Eletreby

Theses and Dissertations

This thesis examines the controversial role that Qatar has been playing in the Arab Spring, specifically from 2011 to 2013. Evidently, Qatari foreign policy will be assessed to comprehend the power this small state has been gaining in Middle East politics in a region plagued by never ending manifestations of power struggles and turbulent developments. The case studies of Egypt, Libya and Syria in which Qatari foreign policy involvement deployed the same rationale will be investigated to examine the increasing involvement of Qatar in Middle East politics. It concludes that the foreign policy of Qatar was both opportunistic and pro-Islamist …

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National Vs. International Schools: Factors Influencing School Choice In Egypt; The Voices Of Parents And Students., Yasmine Alaa Khorshed Dec 2014

National Vs. International Schools: Factors Influencing School Choice In Egypt; The Voices Of Parents And Students., Yasmine Alaa Khorshed

Theses and Dissertations

There are many national and international schools in Cairo today, and every year lots of parents make educational choices for their children. Those choices are based on various factors. This research explores the factors that influence parents to select a certain school type and not the other. It is an initial step into school research as an attempt to help educators and administrators understand parents’ and students’ priorities, needs and expectations when choosing a school. The research questions are: (1) What are the most and least important factors that parents consider when choosing a national/ international school for their children? …

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Terrain Referenced Navigation Using Sift Features In Lidar Range-Based Data, Matthew T. Leines Dec 2014

Terrain Referenced Navigation Using Sift Features In Lidar Range-Based Data, Matthew T. Leines

Theses and Dissertations

The use of GNSS in aiding navigation has become widespread in aircraft. The long term accuracy of INS are enhanced by frequent updates of the highly precise position estimations GNSS provide. Unfortunately, operational environments exist where constant signal or the requisite number of satellites are unavailable, significantly degraded, or intentionally denied. This thesis describes a novel algorithm that uses scanning LiDAR range data, computer vision features, and a reference database to generate aircraft position estimations to update drifting INS estimates. The algorithm uses a single calibrated scanning LiDAR to sample the range and angle to the ground as an aircraft …

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Approximate Dynamic Programming For Military Resource Allocation, Carl R. Parson Dec 2014

Approximate Dynamic Programming For Military Resource Allocation, Carl R. Parson

Theses and Dissertations

This research considers the optimal allocation of weapons to a collection of targets with the objective of maximizing the value of destroyed targets. The weapon-target assignment (WTA) problem is a classic non-linear combinatorial optimization problem with an extensive history in operations research literature. The dynamic weapon target assignment (DWTA) problem aims to assign weapons optimally over time using the information gained to improve the outcome of their engagements. This research investigates various formulations of the DWTA problem and develops algorithms for their solution. Finally, an embedded optimization problem is introduced in which optimization of the multi-stage DWTA is used to …

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Hot Streak Characterization In Serpentine Exhaust Nozzles, Darrell S. Crowe Dec 2014

Hot Streak Characterization In Serpentine Exhaust Nozzles, Darrell S. Crowe

Theses and Dissertations

Modern aircraft of the United States Air Force face increasingly demanding cost, weight, and survivability requirements. Serpentine exhaust nozzles within an embedded engine allow a weapon system to fulfill mission survivability requirements by providing denial of direct line-of-sight into the high-temperature components of the engine. Recently, aircraft have experienced material degradation and failure along the aft deck due to extreme thermal loading. Failure has occurred in specific regions along the aft deck where concentrations of hot gas have come in contact with the surface causing hot streaks. The prevention of these failures will be aided by the accurate prediction of …

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Exploring Individual Differences In Workload Assessment, Danielle K. Boeke Dec 2014

Exploring Individual Differences In Workload Assessment, Danielle K. Boeke

Theses and Dissertations

Air Force missions continue to increase in complexity often imposing higher levels of task load from cognitive tasks on the operators. This increased task load manifests itself in increased cognitive workload and potentially derogated performance. While cognitive workload has been studied for decades, recent advances in objective workload models and physiology monitoring have the potential to provide a more robust understanding of workload, potentially allowing systems to adaptively employ automation to maintain operator peak performance. The current research sought to provide insight into the relationship between subjective workload, task performance, objective workload, and select physiology measures. Analysis of an existing …

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Cloud-Induced Uncertainty For Visual Navigation, Alyssa N. Gutierrez Dec 2014

Cloud-Induced Uncertainty For Visual Navigation, Alyssa N. Gutierrez

Theses and Dissertations

This research addresses the numerical distortion of features due to the presence of clouds in an image. The research aims to quantify the probability of a mismatch between two features in a single image, which will describe the likelihood that a visual navigation system incorrectly tracks a feature throughout an image sequence, leading to position miscalculations. First, an algorithm is developed for calculating transparency of clouds in images at the pixel level. The algorithm determines transparency based on the distance between each pixel color and the average pixel color of the clouds. The algorithm is used to create a dataset …

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A Decision Analysis Framework For Evaluation Of Helmet Mounted Display Alternatives For Fighter Aircraft, Matthew R. Dansereau Dec 2014

A Decision Analysis Framework For Evaluation Of Helmet Mounted Display Alternatives For Fighter Aircraft, Matthew R. Dansereau

Theses and Dissertations

The promise of providing an intuitive and efficient information interface, while allowing the warfighter to perform other critical tasks such as targeting or aircraft control, has led to the growing popularity of Helmet Mounted Displays (HMDs) across the military landscape, especially combat aircraft. Though design and selection of competing systems is critical to optimized performance and safety, structured methods for the evaluation of HMDs are not often used in the acquisition community, leaving selection among alternative designs to the judgment of subject matter experts. However, technical decision-making has been shown to be flawed without the use of a structured decision …

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Characterizing And Managing Intrusion Detection System (Ids) Alerts With Multi-Server/Multi-Priority Queuing Theory, Christopher C. Olsen Dec 2014

Characterizing And Managing Intrusion Detection System (Ids) Alerts With Multi-Server/Multi-Priority Queuing Theory, Christopher C. Olsen

Theses and Dissertations

The DoD sets forth an objective to employ an active cyber defense capability to prevent intrusions onto DoD networks and systems. Intrusion Detection Systems (IDS) are a critical part of network defense architectures, but their alerts can be difficult to manage. This research applies Queuing Theory to the management of IDS alerts, seeking to answer how analysts and priority schemes effect alert processing performance. To characterize the effect of these two variables on queue wait times, a MATLAB simulation was developed to allow parametric analysis under two scenarios. The first varies the number of analysts and the second varies the …

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Using Data Mining To Determine The Impact Continuity Of Care Has On The Air Force’S Healthcare System, David F. Wade Dec 2014

Using Data Mining To Determine The Impact Continuity Of Care Has On The Air Force’S Healthcare System, David F. Wade

Theses and Dissertations

Department of Defense (DoD) healthcare is one of the largest contributors to the DoD budget. In recent years, the cost of the DoD healthcare system has risen at an exponential rate. Much research has been conducted on the impacts that continuity of care has on both improving the quality of patient care and on reducing healthcare costs in the private sector. The DoD has attempted to take a similar approach with regards to healthcare continuity as a means to reduce healthcare costs. This research investigates whether continuity of care influences costs and a military member's availability to perform duties. Specifically, …

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Improving Non-Linear Approaches To Anomaly Detection, Class Separation, And Visualization, Todd J. Paciencia Dec 2014

Improving Non-Linear Approaches To Anomaly Detection, Class Separation, And Visualization, Todd J. Paciencia

Theses and Dissertations

Linear approaches for multivariate data analysis are popular due to their lower complexity, reduced computational time, and easier interpretation. In many cases, linear approaches produce adequate results; however, non-linear methods may generate more robust transformations, features, and decision boundaries. Of course, these nonlinear methods present their own unique challenges that often inhibit their use. In this research, improvements to existing non-linear techniques are investigated for the purposes of providing better, timely class separation and improved anomaly detection on various multivariate datasets, culminating in application to anomaly detection in hyperspectral imagery. Primarily, kernel-based methods are investigated, with some consideration towards other …

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Optimal Collision Avoidance Trajectories For Unmanned/Remotely Piloted Aircraft, Nathan E. Smith Dec 2014

Optimal Collision Avoidance Trajectories For Unmanned/Remotely Piloted Aircraft, Nathan E. Smith

Theses and Dissertations

The post-911 environment has punctuated the force-multiplying capabilities that Remotely Piloted Aircraft (RPA) provides combatant commanders at all echelons on the battlefield. Not only have unmanned aircraft systems made near-revolutionary impacts on the battlefield, their utility and proliferation in law enforcement, homeland security, humanitarian operations, and commercial applications have likewise increased at a rapid rate. As such, under the Federal Aviation Administration (FAA) Modernization and Reform Act of 2012, the United States Congress tasked the FAA to provide for the safe integration of civil unmanned aircraft systems into the national airspace system (NAS) as soon as practicable, but not later …

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Potential Energy Curves And Associated Line Shape Of Alkali-Metal And Noble-Gas Interactions, Larry A. Blank Dec 2014

Potential Energy Curves And Associated Line Shape Of Alkali-Metal And Noble-Gas Interactions, Larry A. Blank

Theses and Dissertations

Recent interest in optically-pumped alkali laser systems has prompted this study into the binary interaction potentials between species of alkali-metal and rare-gas atoms and the effects of the collision of these species on the alkali-metal atom absorption spectrum. Special attention is placed on the relationship of the interaction potentials and the resulting line shape. The X2Σ+1/2, A2π1/2, A2π3/2, and B2Σ+1/2 potential energy curves and associated dipole matrix elements are computed for M+ Ng at the spin-orbit multi-reference configuration interaction level, where M = …

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Influences Of Display Design And Task Management Strategy On Situation Awareness, Performance, And Workload In Process Control Environments, James R. Bowden Dec 2014

Influences Of Display Design And Task Management Strategy On Situation Awareness, Performance, And Workload In Process Control Environments, James R. Bowden

Theses and Dissertations

Process control environments demand well informed high performing human monitors to maintain effectual control of multiple processes. Most research aims to satisfy this requirement through the evaluation of competing heuristic-based display design constructs. Contrary to that method, this study takes a novel approach by examining both factors internal and external to the human observer to identify where beneficial outcomes actually reside. External factors explore the underlying design construct attributes, while internal factors focus on the effect of operator task management strategy, age, and experience. Results from this study present several key findings relative to operator situation awareness, performance, and workload. …

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Multi-Objective Trajectory Optimization Of A Hypersonic Reconnaissance Vehicle With Temperature Constraints, Tadeusz J. Masternak Dec 2014

Multi-Objective Trajectory Optimization Of A Hypersonic Reconnaissance Vehicle With Temperature Constraints, Tadeusz J. Masternak

Theses and Dissertations

Temperature-constrained optimal trajectories for a scramjet-based hypersonic reconnaissance vehicle were generated by developing an optimal control formulation and solving it using a variable order Gauss-Radau quadrature collocation method. The vehicle was assumed to be an air-breathing reconnaissance aircraft that has specified takeoff/landing locations, airborne refueling constraints, specified no-fly zones, and specified targets for sensor data collections. The aircraft model included fight dynamics, aerodynamics, and thermal constraints. This model was incorporated into an optimal control formulation that includes constraints on both the vehicle as well as mission parameters, such as avoidance of no-fly zones and coverage of high-value targets. Optimal trajectories …

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Beliefs, Practices, And Preservice Teachers: A Case Study, Janie Riddle Goodman Dec 2014

Beliefs, Practices, And Preservice Teachers: A Case Study, Janie Riddle Goodman

Theses and Dissertations

Existing in the chronology of content area literacy instruction is a convincing body of research that supports the role of strategic learning in students’ literacy development. However, much of what is known about teaching reading comprehension strategies is not part of the instruction found in many secondary classrooms. Even though studies have shown how students benefit from using comprehension strategies, the instructional necessities for teaching those strategies are not part of many secondary teachers’ practices. Additionally, the historical focus on literacy practices and strategies is shifting towards attention on the critical role of the disciplines in secondary literacy and the …

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Determining The Change Styles Preferences Of Principals In South Carolina's Secondary Schools With A Background In The Fine Arts, Sterling Bernard Harris Dec 2014

Determining The Change Styles Preferences Of Principals In South Carolina's Secondary Schools With A Background In The Fine Arts, Sterling Bernard Harris

Theses and Dissertations

Very little research has been published regarding the change style preferences and leadership styles of secondary principals in South Carolina who have a common background. The purpose of this mixed methods study was to identify the preferred change style preference of principals in South Carolina that have an arts background and the change style preferences of principals without an arts background. This study would also determine if these styles were the same or different. Quantitative data were gathered from online administration of the Change Style Indicator (CSI), the South Carolina Department of Education, and the South Carolina Association of School …

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A Soul Composed Of Harmonies: George Herbert's Life, Writings, And Choral Settings Of His English Poetry, Benjamin Todd Ebner Dec 2014

A Soul Composed Of Harmonies: George Herbert's Life, Writings, And Choral Settings Of His English Poetry, Benjamin Todd Ebner

Theses and Dissertations

George Herbert’s poetry is among the greatest religious poetry written in the English language. His introspective and nuanced understanding of the human soul and his beautiful style of writing have earned him his place among the great poets. His catalogue is filled with poems ready to be set to music, and dozens of them have been. However, there is no document that seeks to gather an annotated list of these compositions in one place. Further, while a few of these compositions are performed often, there are dozens of other worthy compositions that should be heard on a more wide and …

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On The Development Of High Strain Rate Experiments For The Characterization Of Engineering Materials, Silas P. Mallon Dec 2014

On The Development Of High Strain Rate Experiments For The Characterization Of Engineering Materials, Silas P. Mallon

Theses and Dissertations

In order to predict the damage accumulation and failure processes associated with highly dynamic events such as blast loading, shock wave loading, and ballistic impact loading, a commensurate understanding of the fundamental constitutive and fracture behavior of materials subjected to such high rate loading conditions is necessary. In this effort, high strain rate experimental facilities consisting of a shock tube apparatus and a torsional split Hopkinson bar apparatus have been designed, constructed, and subsequently used to investigate the mechanical properties of an array of engineering materials subjected to a variety of dynamic loading conditions. Designs for the experimental equipment utilized …

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Applications Of Advanced Imaging Methods: Macro-Scale Studies Of Woven Composites And Micro-Scale Measurements On Heated Ic Packages, Siming Guo Dec 2014

Applications Of Advanced Imaging Methods: Macro-Scale Studies Of Woven Composites And Micro-Scale Measurements On Heated Ic Packages, Siming Guo

Theses and Dissertations

As a representative advanced imaging technique, the digital image correlation (DIC) method has been well established and widely used for deformation measurements in experimental mechanics. This methodology, both 2D and 3D, provides qualitative and quantitative information regarding the specimen’s non-uniform deformation response. Its full-field capabilities and non-contacting approach are especially advantageous when applied to heterogeneous material systems such as fiber-reinforced composites and integrated chip (IC) packages. To increase understanding of damage evolution in advanced composite material systems, a series of large deflection bending-compression experiments and model predictions have been performed for a woven glass-epoxy composite material system. Stereo digital image …

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Automatic Loop Tuning And Memory Management For Stencil Computations, Fan Zhang Dec 2014

Automatic Loop Tuning And Memory Management For Stencil Computations, Fan Zhang

Theses and Dissertations

The Texas Instruments C66x Digital Signal Processor (DSP) is an embedded processor technology that is targeted at real time signal processing. It is also developed with a high potential to become the new generation of coprocessor technology for high performance embedded computing. Of particular interest is its performance for stencil computations, such as those found in signal processing and computer vision tasks. A stencil is a loop in which the output value is updated at each position of an array by taking a weighted function of its neighbors. Efficiently mapping stencil-based kernels to the C66x device presents two challenges. The …

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Mental Disorders, Mental Health Problems, And Treatment Among Army Recruiters And Recruiting Candidates, 2011-2013: An Examination Of Current Rates In The Recruiting Population, Chadwick Karl Knight Dec 2014

Mental Disorders, Mental Health Problems, And Treatment Among Army Recruiters And Recruiting Candidates, 2011-2013: An Examination Of Current Rates In The Recruiting Population, Chadwick Karl Knight

Theses and Dissertations

Purpose: This study sought to determine the prevalence and severity of mental health disorders (MHDs) and/or mental health problems (MHPs) and types of treatments received among soldiers who have or will serve as recruiters. Research Design and Methods: Data were collected between October 2011 to July 2013 from active duty soldiers (N=2,783) attending courses on Fort Jackson at the U.S. Army’s Recruiting and Retention School (RRS). Students consisted of regular active duty soldiers and activated Guard/Reservist that were either recruiters or recruiting candidates. The medical records of participating recruiters and recruiting candidates were reviewed for the prevalence of MHDs and …

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Compositional Traits In Sorghum Bicolor Characterized By Transcriptome, Ionome And Genome-Wide Association Analysis, Nadia Shakoor Dec 2014

Compositional Traits In Sorghum Bicolor Characterized By Transcriptome, Ionome And Genome-Wide Association Analysis, Nadia Shakoor

Theses and Dissertations

To address the challenge of global mineral malnutrition, current biofortification research in crop plants aims to improve mineral concentration and micronutrient bioavailablity via genetic and traditional breeding methods. Many staple food crops are also used as biofuels, and the chemical and mineral composition of these energy crops directly affect biomass quality and subsequent energy output. Identification of genes and QTL that impact mineral and compositional traits in the grain and biomass of major cereals, including sorghum, is fundamental to developing breeding and selection methods aimed at increasing bioavailable minerals and improving biofuel suitability and seed nutritional quality. A combinatorial strategy …

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Perception Of Police In Public Housing Communities, Taylor Brickley Dec 2014

Perception Of Police In Public Housing Communities, Taylor Brickley

Theses and Dissertations

Research on the relationship between police and citizens consistently finds that attitudes toward police (ATP) are least positive among black citizens in areas of concentrated disadvantage. While much of the research in this area focuses specifically on ATP among young black males in low-income communities because they have the most contact with police, there has been relatively little research that has included older and/or female residents. Additionally, research has yet to examine ATP in racial and economic enclaves that may have different social and environmental characteristics than the surrounding community. This study utilizes in-depth interviews with 60 residents of two …

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Who Let The Elephant In The Room? Analyzing Race And Racism Through A Critical Family Literacy Book Club, Lamar L. Johnson Dec 2014

Who Let The Elephant In The Room? Analyzing Race And Racism Through A Critical Family Literacy Book Club, Lamar L. Johnson

Theses and Dissertations

The purpose of this study was to interpret, investigate, and analyze how race, racism, and power are embedded and intertwined not only in society but also in the education system and in homes and communities. Specifically, through parent and student engagement during a series of book club meetings, I investigated how parents’ racial identities impacted how they created critical dialogue pertaining to issues of race, racism, and power with their children. Guided by critical race pedagogy, critical race theory (CRT) and CRT methodology, this study used race as a critical analytic lens to examine the lives and work of people …

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Surface Functionalization Of Inorganic Substrates With Polymeric Ligands Using Raft Polymerization, Anand Viswanath Dec 2014

Surface Functionalization Of Inorganic Substrates With Polymeric Ligands Using Raft Polymerization, Anand Viswanath

Theses and Dissertations

This work focused on using polymers to modify the surface of various inorganic substrates, ranging from TiO2, ITO, CDSe and CdS nanostructures to micron sized silica particles. The synthesis of the polymers using the RAFT technique and the characterization of the functionalized substrates were analyzed in detail to provide insights into their use for various applications. In the first part of this work, novel phosphate based RAFT agents and phosphate containing polymers, including poly(methyl methacrylate) (PMMA), poly(glycidyl methacrylate) (PGMA) and poly(dimethyl siloxane) (PDMS) were synthesized. Alkyne functionalized PGMA was used to click to ITO surfaces in a grafting-to method, and …

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School-Based Sexuality Education, Gender, And Relationship Self-Efficacy: A Moderated-Mediation Analysis Of Sexual Behavior In First-Year College Students, Sara C. Schmidt Dec 2014

School-Based Sexuality Education, Gender, And Relationship Self-Efficacy: A Moderated-Mediation Analysis Of Sexual Behavior In First-Year College Students, Sara C. Schmidt

Theses and Dissertations

While the effectiveness at abstinence-only versus comprehensive sexuality education in preventing adolescent risky sexual behavior is widely researched, little is known about whether material learned in secondary school sexuality education classes impacts emerging adult sexual behavior in the college environment. Furthermore, research suggests that self-efficacy – or beliefs in one’s abilities to organize and execute actions – may be more critical than knowledge or skills in terms of how individuals enact behavior. We hypothesized a moderated-mediation effect by which the causal impact of type of sexuality education on four different sexual behaviors during the first year in college is transmitted …

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Culturally Relevant Teaching: A Case Study On Teaching Statistics In The High School Setting, Lashaune Natae Smith Dec 2014

Culturally Relevant Teaching: A Case Study On Teaching Statistics In The High School Setting, Lashaune Natae Smith

Theses and Dissertations

Public school enrollment is increasing for African American, Hispanic, Asian/Pacific Islander, and American Indian/Alaskan Native students. However, minority and immigrant children tend to perform lower academically than White, middle-class students. Hence, there is a growing need to reform pedagogical practices for underachieving student populations to have improved chances for school success. Culturally relevant teaching is an effective approach to addressing the social and academic needs of minority students. The purpose of this study was to examine culturally relevant teaching in high school statistics classrooms of predominantly African American students. Using a qualitative case study research design, this study examined two …

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Relationships Between Prior Experiences, Current Teaching Contexts, And Novice Teachers' Use Of Concrete Representation For Mathematics Instruction, Elizabeth Lee Johnson Dec 2014

Relationships Between Prior Experiences, Current Teaching Contexts, And Novice Teachers' Use Of Concrete Representation For Mathematics Instruction, Elizabeth Lee Johnson

Theses and Dissertations

This case study documents the perceived influences on three novice elementary teachers’ use of concrete representations for teaching mathematics. In order to develop mathematical proficiency, students need access to a variety of representations (i.e. pictures, words, symbols, concrete materials, and real world contexts) to make sense of mathematical ideas. Three sources of data were collected: video-recorded lessons, interviews, and a focus group. Analyses indicated that although concrete representations were accessible to all three teachers, they were least used among the available representations. Verbal expression was most prominent, followed closely by abstract written symbols. Technology, which was not one of the …

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Application Of Various Adsorbents To Remove Micro-Pollutants In Aquatic System, Chanil Jung Dec 2014

Application Of Various Adsorbents To Remove Micro-Pollutants In Aquatic System, Chanil Jung

Theses and Dissertations

Untreated or insufficiently treated pharmaceuticals and endocrine disrupting compounds (EDCs) as well as heavy metals have influenced the ecosystem and their exposures in the water system have threatened human health; causing cancers and adverse health effect to immune system. While various water treatment techniques have been applied to solve this problem, adsorption has been considered as one of the most efficient and manageable water purification techniques. Advanced analysis methods for aqueous contaminants have improved comprehension, allowing proficiency about the fate of trace leveled emerging contaminants, thus allowed to reveal the adsorption mechanisms of each pollutant. This dissertation focuses on the …

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