Digital Commons Network^™

Design, Fabrication, And Testing Of A Proprioceptive Electroadhesion Pad For Space Applications, Walter Saravia

Doctoral Dissertations and Master's Theses

The purpose of this study is to design, analyze, and fabricate an electroadhesion mechanism with the goal of providing controlled electrostatic adhesion to objects with little known surface finish, of varying curvature, and different materials. The main purpose of the mechanism is that of ensuring a soft docking, controlled in closed loop, for attachment to large pieces of orbital debris. Other envisaged purposes for the mechanism are sample collection and manipulation in free-fall and in-situ analysis of cohesive forces in regolith at small bodies, such as asteroids or comets. Electrostatic finite element analysis was performed on various electroadhesion pad designs …

The Three-Dimensional Turbulent Boundary Layer On A Rotating Disk, Daniel Digre

Doctoral Dissertations and Master's Theses

Three-dimensional turbulent boundary layers (3DTBL) are seen quite commonly in nature as well as in the engineering applications. Despite this, very few high Reynolds number studies have been carried out on these boundary layers, particularly focusing on eddy structure, eddy scales and their interactions. The current study focused on developing, characterizing and evaluating an experimental framework to study high Reynolds number #3DTBL on a rotating disk with the long-term goal of carrying out high-fidelity measurements. The rotating disk flow is characterized by weak centrifugal pumping which sets up the cross flow that leads to turbulence. The tangential and radial velocities …

Learning Support Effectiveness In Mathematics At A Tennessee University, Mark Dula

Electronic Theses and Dissertations

Every year thousands of students graduate from high school and move on to higher education, but many of them are not yet prepared for college level courses. The Tennessee Board of Regents does not currently allow 4-year institutions to teach courses that are below college level, so many institutions are using programs such as learning support courses to assist a growing population of underprepared students. The purpose of this study was to determine if the 1-term and 2-term retention rates for students with the same ACT mathematics subsection scores were different between students who took a regular section of Probability …

The Number Of Zeros Of A Polynomial In A Disk As A Consequence Of Coefficient Inequalities With Multiple Reversals, Derek T. Bryant

Electronic Theses and Dissertations

In this thesis, we explore the effect of restricting the coefficients of polynomials on the bounds for the number of zeros in a given region. The results presented herein build on a body of work, culminating in the generalization of bounds among three classes of polynomials. The hypotheses of monotonicity on each class of polynomials were further subdivided into sections concerning r reversals among the moduli, real parts, and both real and imaginary parts of the coefficients.

Teacher Well-Being And Virginia Standards Of Learning, Matthew W. Mccarty

Electronic Theses and Dissertations

The Virginia Standards of Learning (SOLs) were created by the Virginia Department of Education as a method to assess student learning. The SOLs were implemented in the mid-1990s and were used as end of grade and end of course assessments for grades 3-8 and secondary courses. The SOLs have taken on a foundational role within the Virginia public schools as they now count toward student graduation and teacher evaluation. Virginia now uses a teacher evaluation system that is in large part based upon student performance on the SOL assessments. This evaluation system is in place in all public school divisions …

An Examination Of The Perceptions Of Traditional And Nontraditional Student Engagement At Northeast State Community College, Barbara J. Lowe

Electronic Theses and Dissertations

The purpose of this study was to examine the relationship between student engagement and overall satisfaction of traditional and nontraditional students at the community college level at Northeast State Community College.

Three professors, 2 staff, 2 administrators, 5 traditional students, and 5 nontraditional students from Northeast State Community College comprised the sample for the study. A descriptive case study was the qualitative approach used. Data were collected in individual in-depth interviews with participants.

The findings of this study could provide community college administrators, staff and faculty with an understanding of traditional and nontraditional students’ engagement and satisfaction and experiences on …

A Physiologically-Based Pharmacokinetic Model For Vancomycin, Rebekah White

Undergraduate Honors Theses

Vancomycin is an antibiotic used for the treatment of systemic infections. It is given

intravenously usually every twelve or twenty-four hours. This particular drug has a

medium level of boundedness, with approximately fty percent of the drug being free

and thus physiologically eective. A physiologically-based pharmacokinetic (PBPK)

model was used to better understand the absorption, distribution, and elimination of

the drug. Using optimal parameters, the model could be used in the future to test

how various factors, such as BMI or excretion levels, might aect the concentration

of the antibiotic.

The Effects Of Prompted Tutoring On An Emporium Model Math Course, Juliette Michelle Young

Honors Theses

My research goal is to investigate how specific prompting of students would affect their involvement and progress in an emporium developmental math course. With the aim of increasing the students’ involvement and progress I tested a method that was in tended to increase students’ perceived connectedness with the classroom and promote the use of the available tutors and teachers. I monitored consenting students’ progress in the Spring 2015 courses and sent emails to students who met any one of three different criterion: (1) If the students time investment was below a threshold. (2) If the student’s mastery pace was less …

Constructions And Isomorphism Types Of Images, Jessica Luna Ramirez

Electronic Theses, Projects, and Dissertations

In this thesis, we have presented our discovery of true finite homomorphic images of various permutation and monomial progenitors, such as 2^*7: D₁₄, 2^*7 : (7 : 2), 2^*6 : S₃ x 2, 2^*8: S₄, 2*⁷²: (3²:(2S₄)), and 11^*2 :_m D₁₀. We have given delightful symmetric presentations and very nice permutation representations of these images which include, the Mathieu groups M₁₁, M₁₂, the 4-fold cover of the Mathieu group M₂₂, 2 x …

The Impact Of A Classroom-Based Physical Activity Program On Teachers' Perceptions Of Student Engagement, Courtney Lynn Doussett

Electronic Theses, Projects, and Dissertations

The purpose of this study was to apply a mixed-methods approach using an exploratory case study design to identify the impacts of a physical activity intervention program on student engagement in an elementary school setting. This exploratory case study research examined teachers’ perceptions of student engagement prior to and following implementation of a classroom-based physical activity intervention program, ABC for Fitness. Participants completed the Teacher Assessment of Student Engagement survey of student engagement and behavior, participated in an ABC for Fitness workshop, semi-structured interviews, a question and answer session, a mid-point check-in, and completed daily written behavior incident logs. Results …

Apply Data Clustering To Gene Expression Data, Abdullah Jameel Abualhamayl Mr.

Electronic Theses, Projects, and Dissertations

Data clustering plays an important role in effective analysis of gene expression. Although DNA microarray technology facilitates expression monitoring, several challenges arise when dealing with gene expression datasets. Some of these challenges are the enormous number of genes, the dimensionality of the data, and the change of data over time. The genetic groups which are biologically interlinked can be identified through clustering. This project aims to clarify the steps to apply clustering analysis of genes involved in a published dataset. The methodology for this project includes the selection of the dataset representation, the selection of gene datasets, Similarity Matrix Selection, …

Open Source Toolkit For Reentry Object Modeling, Christopher Lloyd Ostrom Ii

Master's Theses

Predicting the mass, position, and velocity of an object during its reentry are critical to satisfy NASA and ESA requirements. This thesis outlines a 3-D orbit and mass determination system for use on low earth orbit as applicable to general objects, of various material and size. The solution uses analytical models to calculate heat flux and aerodynamic drag, with some basic numerical models for simple orbit propagation and mass flow rate due to ablation. The system outlined in this thesis currently provides a framework for rough estimates of demise altitude and final mass, but also allows for many potential accuracy …

Three Degree-Of-Freedom Parallel Actuator Telescope Mount, Garrett Daniel Gudgel

Master's Theses

This thesis contains the design, implementation, and testing of an original, small-scaled two degree-of-freedom telescope mount and a medium-scaled three degree-of-freedom telescope mount inspired by the six degree-of-freedom Stewart-Gough platform telescope mount. The end product is intended to achieve research-standard resolution of targeted sky coverage for binary star research. The scaled prototype was carried through concept design, manufacturing, software development, and testing. The mount software development and electronic design is applicable to a full-scale mount as the drivers have been designed to be easily adapted to different actuator configurations. It is recommended that this design be implemented into a telescope …

Production And Harvest Of Microalgae In Wastewater Raceways With Resource Recycling, Alexander Colin Roberts

Master's Theses

Microalgae can be grown on municipal wastewater media to both treat the wastewater and produce feedstock for algae biofuel production. However the reliability of treatment must be demonstrated, as well as high areal algae productivity on recycled wastewater media and efficient sedimentation harvesting. This processes was studied at pilot scale in the present research.

A pilot facility was operated with nine CO₂-supplemented raceway ponds, each with a 33-m² surface area and a 0.3-m depth, continuously from March 6, 2013 through September 24, 2014. The ponds were operated as three sets of triplicates with two sets continuously fed …

Structural Damage Assessment Using Artificial Neural Networks And Artificial Immune Systems, Arthur Q.X. Shi

Master's Theses

Structural health monitoring (SHM) systems have been technologically advancing over the past few years. Improvements in fabrication and microelectronics allow the development of highly sophisticated sensor arrays, capable of detecting and transmitting an unprecedented amount of data. As the complexity of the hardware increases, research has been performed in developing the means to best utilize and effectively process the data. Algorithms from other computational fields are being introduced for the first time into SHM systems. Among them, the artificial neural network (ANN) and artificial immune systems (AIS) show great potential. In this thesis, features are extracted out of the acceleration …

Digestibility Of Two Complete Pelleted Diets By The Horse (Equus Caballus) As A Model Animal For Nondomestic Hindgut Fermenters, Emily M. Schwartz

Master's Theses

Estimating nutrient and energy requirements of exotic animals is a necessary component of nutrition management in zoos and other wildlife facilities. In the absence of species-specific data, domestic animal models are often referenced. Herbivorous hindgut fermenters, such as horses, zebra, and rhinoceros, rely on microbial fermentation in the cecum and colon to utilize dietary structural carbohydrates. The study objective was to measure the digestible energy of two (LOW, HIGH) complete pelleted diets by the horse as a model for nondomestic hindgut fermenters. Seven, individually housed, adult Quarter Horse (Equus caballus) geldings were assigned to one of two diets as 100% …

Automated Multi-Modal Search And Rescue Using Boosted Histogram Of Oriented Gradients, Matthew A. Lienemann

Master's Theses

Unmanned Aerial Vehicles (UAVs) provides a platform for many automated tasks and with an ever increasing advances in computing, these tasks can be more complex. The use of UAVs is expanded in this thesis with the goal of Search and Rescue (SAR), where a UAV can assist fast responders to search for a lost person and relay possible search areas back to SAR teams. To identify a person from an aerial perspective, low-level Histogram of Oriented Gradients (HOG) feature descriptors are used over a segmented region, provided from thermal data, to increase classification speed. This thesis also introduces a dataset …

Sparse Aperture Speckle Interferometry Telescope Active Optics Control System, Matthew Clause

Master's Theses

A conventional large aperture telescope required for binary star research is typically cost prohibitive. A prototype active optics system was created and fitted to a telescope frame using relatively low cost components. The active optics system was capable of tipping, tilting, and elevating the mirrors to align reflected star light. The low cost mirror position actuators have a resolution of 31 nm, repeatable to within 16 nm. This is accurate enough to perform speckle analysis for the visible light spectrum. The mirrors used in testing were not supported with a whiffletree and produced trefoil-like aberrations which made phasing two mirrors …

Cost-Based Decision Making Model For Regional In-House Versus Outsourcing Logistics, Henrik Darren Lee

Master's Theses

This thesis proposes a model for selecting between insourcing logistics for local distribution and outsourcing these functions to a third-party logistics (3PL) company. Supply chain optimization, as well as global supply chain management, are topics that are now well-covered; local distribution, despite its integral function in an organization, is much less researched. Models exist for network design and optimization, but the practical application of these network models may call for decisions and considerations that are not covered in these optimization models.

A breakeven analysis selection model between using in-house logistic system and 3PL is derived, considering various regional parameters. The …

Identifying And Predicting Rat Behavior Using Neural Networks, Jonathan A. Gettner

Master's Theses

The hippocampus is known to play a critical role in episodic memory function. Understanding the relation between electrophysiological activity in a rat hippocampus and rat behavior may be helpful in studying pathological diseases that corrupt electrical signaling in the hippocampus, such as Parkinson’s and Alzheimer’s. Additionally, having a method to interpret rat behaviors from neural activity may help in understanding the dynamics of rat neural activity that are associated with certain identified behaviors.

In this thesis, neural networks are used as a black-box model to map electrophysiological data, representative of an ensemble of neurons in the hippocampus, to a T-maze, …

Bit By Bit: Using Design-Based Research To Improve The Health Literacy Of Adolescents, Mega Subramaniam, Beth St. Jean, Natalie Greene Taylor, Christie Kodama, Rebecca Follman, Dana Casciotti

School of Information Faculty Publications

Background: Although a low health literacy level has been found to be among the most powerful predictors of poor health outcomes, there is very little research focused on assessing and improving the health literacy skills of adolescents, particularly those from socioeconomically disadvantaged backgrounds. The vast majority of existing research focuses solely on reading comprehension, despite the fact that health literacy is actually a multifaceted concept, which entails many different types of skills.

Objective: The aim of this paper is to first mine existing literature to identify the many different skills that have been posited to constitute health literacy, and then, …

If At First You Don't Succeed, Try, Try, Try Again: The Third Circuit Strikes Down Prevailing Wage Rule Once More In Comite De Apoyo A Los Trabajadores Agricolas V. Perez, Sara Moyer

Villanova Law Review (1956 - )

No abstract provided.

Borges's Postmodern Landscape, Mario Vrbančić

CLCWeb: Comparative Literature and Culture

In his article "Borges's Postmodern Landscape" Mario Vrbančić examines specific constructs of space -- among them heterotopia (Michel Foucault) and hyperreality (Jean Baudrillard) -- and applies them to narration and narrative strategies in Jorge Luis Borges's texts. Vrbančić posits that postmodern mapping undermines our known familiar geography and that authors like Borges who experimented with different spaces and connections in their texts, represent postmodernism avant la lettre.

Designing For Immersive Technology: Integrating Art And Stem Learning, Jane Elizabeth Crayton

Art & Art History ETDs

Students struggle to learn STEM concepts. The arts have been proposed as a means to engage students in STEM education, resulting in the idea of STEAM. However, STEAM approaches do not always result in learning. A collaboration between a major research university and a small Native arts college in the southwestern United States provided an opportunity for studying the potential for arts to engage students in STEM learning. This study investigates how participating art students (N = 4) solved technological and design production problems when working with immersive technologies in a paid summer internship program. The internship program lasted six …

A Manipulation Study: The Effect Of Predation Risk On The Space Use Of The Chilean Rodent, Octodon Degus, Erin D. Myers

Honors Theses

Predation has significant effects on animal behavior and space use across species. In small mammals, the home range areas are shown to be influenced by predation risk. This project incorporates trapping data to analyze how predation risk influences the space use of Octodon degus, a social rodent endemic to Chile. We compared range size of degus living in four predator exclusion enclosures versus four control, non-predator exclusion enclosures in Parque Nacional Bosque de Fray Jorge, Chile through grid trapping methods. For each enclosure (NP and P) 95% MCP, 95% Kernal, 95% Distance Interval, and average captures was measured. There were …

The Art Of Multiphonics: A Progressive Method For Trombone, Matthew William Haislet

Dissertations

The Art of Multiphonics serves as a resource for trombone players and teachers wanting to develop multiphonic technique in order to approach the literature for which this technique is required. Its further aims are to provide accurate and relevant information regarding (1) subjective tones and beats, (2) the tuning of multiphonic intervals, and (3) vocal technique. Designed to be accessible to players of intermediate to advanced abilities, this method contains progressively arranged exercises for vocal and split-tone multiphonics. The first five chapters of the method are devoted to vocal multiphonics and contain individual subchapters that focus on one aspect of …

A Design For A National Music Examination Board In Thailand, With Particular Reference To Viola, Juckrit Charoensook

Dissertations

The research of “A Design for a National Music Examination Board in Thailand, with Particular Reference to Viola” aims to study the requirements of viola entrance examinations of the three selected colleges of music in Thailand: Chulalongkorn University, Mahidol University, and Silpakorn University; and the critical survey of syllabi of two selected international music examination boards: Trinity College London and Associated Board of the Royal School of Music. By combining the result from both studies, the design for a standard assessment of viola in Thailand is proposed. The standard assessment is divided into eight grade levels as a common practice. …

Parents’ Reasons For Choosing Non-Public Non-Denominational Elementary Schools For Low Socioeconomic Students In Alabama: A Mixed-Methods Study, Kyle A. Francis-Thomas

Department of Educational Administration: Dissertations, Theses, and Student Research

The purpose of this mixed-methods study was to determine parents’ reasons for choosing Non-Public Non-Denominational Elementary Schools for low socioeconomic students in Alabama. Low socioeconomic students were defined as students who qualified for free/reduced lunches. The research was designed as a mixed methods study with data being collected via an online survey and interviews. This study fills a gap in the literature about parents’ reasons for choosing Non-Public Non-Denominational Elementary Schools for low socioeconomic students in Alabama.

Based on the literature there are many possible reasons for parents choosing to send their children to private schools. The literature indicated that …

Privacy As A Public Good, Joshua A. T. Fairfield, Christoph Engel

Duke Law Journal

Privacy is commonly studied as a private good: my personal data is mine to protect and control, and yours is yours. This conception of privacy misses an important component of the policy problem. An individual who is careless with data exposes not only extensive information about herself, but about others as well. The negative externalities imposed on nonconsenting outsiders by such carelessness can be productively studied in terms of welfare economics. If all relevant individuals maximize private benefit, and expect all other relevant individuals to do the same, neoclassical economic theory predicts that society will achieve a suboptimal level of …

Beyond Bitcoin: Issues In Regulating Blockchain Transactions, Trevor I. Kiviat

Duke Law Journal

The buzz surrounding Bitcoin has reached a fever pitch. Yet in academic legal discussions, disproportionate emphasis is placed on bitcoins (that is, virtual currency), and little mention is made of blockchain technology—the true innovation behind the Bitcoin protocol. Simply, blockchain technology solves an elusive networking problem by enabling “trustless” transactions: value exchanges over computer networks that can be verified, monitored, and enforced without central institutions (for example, banks). This has broad implications for how we transact over electronic networks.

This Note integrates current research from leading computer scientists and cryptographers to elevate the legal community’s understanding of blockchain technology and, …