Digital Commons Network^™

An Examination Of The Integration Of Augmented Reality In Science Curriculum, Cathleen A. Bierman

Masters Theses

This study examines students’ success rate and level of engagement in a science classroom by using augmented reality (AR) specifically merge cube. Students’ success rate is measured by their grades, which can determine if the student understands the material. Engagement is measured by observing whether or not the students are asking questions, volunteering information, working well with others, paying attention in class, and participates actively in discussions. The two research questions guided the study:1. Does the use of a merge cube in the science classroom improve participants’ success rate in learning science? and 2. Does using a merge cube increase …

An Exploration Of The Perception Of Faith Development At A Midwestern Public Institution, Zachary Sandoval

Masters Theses

Despite research indicating benefits to religious or faith involvement, there is an increase in individuals that claim to have no religious affiliation. Additionally, most research that has investigated faith development of college students has been conducted at private religious institutions. This qualitative study utilized semi-structured interviews to examine students’ perceptions of various interactions on their faith development at a public, rural Midwestern institution. Moreover, this study investigated how the institution of interest can better support spirituality on campus and the role student affairs can have on spiritual development. Thematic material was developed through Parks’s (2000) theory of faith development. Results …

Self-Reported Multicultural Teaching Knowledge And Skills Of School Professionals, Julia Kedzior

Masters Theses

Diverse learners face a variety of challenges, such as achievement gaps, behavior problems, and absenteeism. Therefore, it is important for their educators to have both multicultural teaching knowledge and skills to address these challenges and work towards a successful school experience for all students. Although research has sought to measure the cultural competence of teachers, not many studies have examined cultural competence in other school professionals (administrators, school psychologists, social workers, interventionists, instructional assistants, and other individuals who directly work with students in the school environment). In the current study, 185 teachers and other school professionals completed an adapted version …

Relationships Between Parent-Child Interactions And Sexual Attitudes, Behaviors And Online Activity In Young Adulthood, Emily Donar

Masters Theses

The current study examined correlations between parent-child relationships and its relationship with the sexual attitudes and behaviors of young adults. Participants were asked to report on their perception of communication and quality relations with their parents. The findings indicate there was a relationship between the perception of high-quality parent-child relationships, likelihood of having extensive sexual experience, tendency to hold specific sexual attitudes and the frequency of online sexual behaviors. Explanations regarding the discrepancy between previous findings and the current study were discussed, including the sexual fluency of those with conservative attitudes. The consideration of gaps in literature incorporating online sexual …

The Efficacy Of Peer-Assisted Learning Strategies (Pals) With Hispanic English Language Learners In The 2nd Grade, Sonia Duran

Masters Theses

The present study examined the efficacy of a reading instruction, Peer Assisted Learning Strategies (PALS), for Hispanic English Language Learners (ELL). Currently, the literature indicates that there is a surge in ELL students, most commonly Spanish-speaking ELL students, in the United States. This increase in ELL population created a need for academic support as many of these students are historically academically behind their non-ELL peers due to the negative impact of lack of exposure to the English language and cultural differences. The PALS program is a class-wide reading intervention where students engage in reading activities to promote reading skills; and …

Metal Complexes Of Bis(Pyrazolyl)Methane-Based Ditopic Ligands, Pubudu Nuwan Perera Hapuarachchige

Masters Theses

No abstract provided.

Cheeger Constants Of Two Related Hyperbolic Riemann Surfaces, Ronald E. Hoagland

Masters Theses

This thesis concerns the study of the Cheeger constant of two related hyperbolic Riemann surfaces. The first surface R is formed by taking the quotient U²/Γ(4), where U² is the upper half-plane model of the hyperbolic plane and Γ(4) is a congruence subgroup of PSL2(Z), an isometry group of U² . This quotient is shown to form a Riemann surface which is constructed by gluing sides of a fundamental domain for Γ(4) together according to certain specified side pairings. To form the related Riemann surface R' , we follow a similar procedure, this time taking the …

Values Of Trust In Ai In Autonomous Driving Vehicles, Ru Lian

Masters Theses

“Automation with artificial intelligence technology is an emerging field and is widely used in various industries. With the increasing autonomy, learning, and adaptability of intelligent machines such as self-driving cars, it is difficult to regard them as simple tools in human hands. At the same time, a series of problems and challenges such as predictability, interpretability, and causality arise. Trust in self-driving technology will impact the adoption and utilization of autonomous driving technology. A qualitative research methodology, Value-Focused Thinking, is used to identify the values of trust in autonomous driving vehicles and analyze the relationship between these values”--Abstract, page iii.

Projectile Generator Design For Underground Coal Mine Seal Testing, Ethan Allan Steward

Masters Theses

"Underground coal mines have several dangers, one of the most hazardous of which is the possibility of an explosion caused by the ignition of methane gas. To reduce ventilation costs, coal mines have the option to close off abandoned areas that are no longer active with structural seals to keep an explosion from propagating into working areas of the mine. Though seals have been designed to resist the overpressure, none have been evaluated for their resistance to the impact of heavy objects. Underground explosions produce high velocity gasses that, traveling through mine openings, may propel objects in the mine at …

Relationships Among Mineralogy, Geochemistry, And Oil And Gas Production In The Tuscaloosa Marine Shale, Hayley Roxana Beitel

Masters Theses

"The Tuscaloosa Marine Shale (TMS) is an unconventional shale reservoir located in southeast Louisiana and southwest Mississippi. Limited mineralogical and geochemical data for the TMS have been published. The data that do exist indicate that the formation is heterogeneous. Consequently, previous investigators and oil and gas companies have not managed to effectively link mineralogical and chemical changes to oil and gas production in the TMS. These linkages are critical to establish for future exploration efforts. In this study, we attempt to establish these relationships by gathering all existing mineralogical and chemical data in the TMS, including newly acquired data from …

Predator Scent And Presence Alter Mammal Assemblages In The Missouri Ozarks, Usa, Cara Jean Yocom-Russell

Masters Theses

"Species that are vulnerable to predation exhibit a host of behavioral and physiological adaptations toward the avoidance of this outcome: Heightened awareness of surroundings through visual, olfactory, and auditory senses are common ways in which these species avoid detection by predators. While links between direct predator-prey relationships are well established, less is known about how predators can shape overall community structure or the populations of secondary or less frequently consumed prey items. As humans expand into rural areas, the frequency of wildlife conflicts rises. In response, humans look to prevent these events with a variety of methods. One such method …

Multiple Generations Of Phlogopite In An Alnöite Diatreme: Insights Into The Petrogenesis Of The Avon Alkaline Igneous Province, Missouri, Nathan Gregory Limbaugh

Masters Theses

“Alkaline Ultramafic Carbonatite (AUC) complexes, although rare, are valued for diamonds and REEs, and as windows into subcontinental and mantle processes as recorded by rock fabrics, mineral spatial relationships, and mineral compositions. We report specifically on olivine and phlogopite petrographic relationships and compositions from the Devonian alnoite diatreme-facies of the Avon Alkaline Igneous Province, Missouri. The diatreme alnoite is a mixture of domains of olivine magmaclasts (OM) set in a crystal-rich melilite matrix. OM are highly fractured, serpentinized olivine pseudomorphs with variable amounts of pristine olivine fragments. Larger olivine domains typically exhibit clear crystal faces and irregular “channels” indicative of …

Bond Graph Modeling Of Critical Infrastructures For Cyber-Physical Security Implementation, Michele Jane White

Masters Theses

“In developed societies, there exists infrastructure vital to everyday life. This includes water and power systems. Technology is quickly evolving and being implemented on these utilities. This technology can range from smart metering in neighborhoods to volume sensors in local waste water treatment facilities. When networking, sensing, monitoring, or control devices are integrated with infrastructure it is considered a cyber physical system, or CPS. When information about an important physical system is connected to the virtual world, it is opened up to security risks. Cyber security can be provided to the CPS by monitoring the physical state of the system …

Computer Gamification: Addressing Symptoms Of Inattentive Adhd In Children, Shavonne Victoria Halterman

Masters Theses

“Computer gamification has the potential to help meet the educational needs of children with Inattentive Attention Deficit/Hyperactivity disorder (ADHD). The elements of computer gamification are mapped to distinct kinds of interventions for Inattentive ADHD and show certain types of computer gamified learning are better than others for those who experience Inattentive ADHD”--Abstract, page iii.

A Compact Wavelength Meter Using A Multimode Fiber, Ogbole Collins Inalegwu

Masters Theses

“Wavelength meters are very important for precision measurements of both pulses and continuous-wave optical sources. Conventional wavelength meters employ gratings, prisms, interferometers, and other wavelength-sensitive materials in their design. Here, we report a simple and compact wavelength meter based on a section of multimode fiber and a camera. The concept is to correlate the multimodal interference pattern (i.e., speckle pattern) at the end-face of a multimode fiber with the wavelength of the input lightsource. Through a series of experiments, specklegrams from the end face of a multimode fiber as captured by a charge-coupled device (CCD) camera were recorded; the images …

Research And Development Of A Laser Hot Wire Deposition Process, Christopher Croft

Masters Theses

“Laser hot wire directed energy deposition (DED) is an increasingly popular method for improving deposition rates and overall reduction of build times in DED processing. While there is clear benefit, it is important to fully understand the impact of preheating the wire. This work focuses on developing a model that describes bead geometry output using all factors including the wire preheat. The model was fit with over 150 data points that explored a large range of each factor. The resulting model was then leveraged to evaluate a process control variable. The technique chosen used feedback from the hot wire system …

Preclassic Cultural Eutrophication Of Lake Petén Itzá, Lowland Guatemala, By The Early Maya Of Nixtun-Ch'ich', Brooke A. Birkett

Masters Theses

"Paleolimnological evidence indicates the ancient Maya transformed lowland terrestrial ecosystems by felling forest vegetation to construct large civic-ceremonial centers and expand agriculture. The effects of prehistoric Maya land alterations on lake trophic status, however, remain poorly understood. We analyzed a 515-cm-long sediment core from Lake Petén Itzá, lowland Guatemala, to infer paleoenvironmental changes resulting from Maya occupation of the riparian archaeological site of Nixtun-Ch'ich'. Substantial increases in charcoal and fecal stanol concentrations indicate Maya occupation of the Candelaria Peninsula by the late Early Preclassic period beginning ca. 1400 cal yr Before the Common Era (hereafter BCE), despite scant archaeological evidence …

Design And Development Of A Variable Resistance Hand Exerciser Using A Compliant Mechanism, Jyothi Komatireddy

Masters Theses

"Rehabilitation exercise plays a vital role in recovering from an injury or illness condition by improving flexibility and restoring muscle strength. If not done correctly, exercising can cause more damage to the health condition than in healing. Understanding the muscle’s resistance level while performing an exercise helps design the exercising equipment not to overstrain the muscle during operation. This research presents a methodology to develop a variable-resistance hand exerciser by using a compliant cam-follower mechanism. The proposed design comprised a compliant follower and a rigid cam. The rigid cam is synthesized using the human hand force-deflection profile as an input …

Biochemical Assay Invariant Attestation For The Security Of Cyber-Physical Digital Microfluidic Biochips, Fredrick Eugene Love Ii

Masters Theses

“Due to the devastating global impact that infectious diseases have had, especially in developing countries, the demand for access to adequate resources to combat sickness continues to be a heavy burden. Reliable and affordable diagnostics is a vital first line of defense in fighting outbreaks and providing accurate treatment. Digital microfluidics biochips capable of running multiple diagnostic tests on a single platform are an emerging technology that are increasingly being evaluated as a viable platform for rapid diagnosis and point-of-care field deployment. Although these systems offer many benefits, processing errors are inherent. Therefore, cyber-physical digital biochips are being investigated that …

Airbnbs In The Rural Midwest: Optimizing Listing Content For User’S Decision-Making Processes, Mary Catherine Kosacki

Masters Theses

This research examines the effectiveness of rural Airbnb listing content in influencing user decision-making. The peer-to-peer economy has been rapidly growing over the past decade, providing new opportunities for individuals to offer goods and services to other individuals through corporate platforms. Specifically, the Airbnb platform has rapidly grown, becoming the largest online platform for peer-to-peer property rentals, and one of the largest companies in the peer-to-peer sector of the economy. Previous research on the Airbnb platform has focused primarily on urban areas; however, Airbnbs have a proportionally large impact on local economies in rural areas.

Several methods were employed to …

Analysis And Design Of Dc-Link Capacitor In Cascaded H-Bridge Multilevel Active Front-End Converter, Muhammad Shehroz Malik

Masters Theses

Medium-voltage grid-tied systems often use a cascaded H-bridge multi-level active front-end. In this converter, dc link bus capacitors play an important role in stabilizing the converter and enabling both active and reactive power injections. The present work provides analytical expressions for the capacitor current, which are essential for optimizing system design (especially capacitor size vs. lifetime). Then, the expression is incorporated into the grid connected bidirectional power system model. Consequently, this work contributes to the guiding principles to choose accurate dc link capacitor ratings against grid-side power delivery requirements.

DC-link capacitors come with an expiration date which is dependent on …

Topological Biclustering Artmap, Raghu Yelugam

Masters Theses

”Detection of gene mutations is central for assessing genetic factors affecting disease predisposition, genetic causes of a particular disease, and gene-targeted treatment. DNA microarray methods are widely used to detect mutations by contrasting the expression levels of thousands of genes together under varying experimental conditions. The experimental conditions could be diseased cell states compared with the normal cell states. Biclustering, a robust exploratory data analysis tool, can be applied to microarray data to detect subsets of genes that co-express highly only for a subset of experimental conditions. Such detection is crucial for gaining insights into gene regulatory networks, differential gene …

Neural Network Supervised And Reinforcement Learning For Neurological, Diagnostic, And Modeling Problems, Donald Wunsch Iii

Masters Theses

“As the medical world becomes increasingly intertwined with the tech sphere, machine learning on medical datasets and mathematical models becomes an attractive application. This research looks at the predictive capabilities of neural networks and other machine learning algorithms, and assesses the validity of several feature selection strategies to reduce the negative effects of high dataset dimensionality. Our results indicate that several feature selection methods can maintain high validation and test accuracy on classification tasks, with neural networks performing best, for both single class and multi-class classification applications. This research also evaluates a proof-of-concept application of a deep-Q-learning network (DQN) to …

A Systematic Analysis Of Eye-Tracking Metrics For Sleepiness, Debasis Roy

Masters Theses

”Sleepiness or sleep deprivation is a serious hazard that can be life-threatening in carrying out certain tasks (e.g., when driving or executing attention-critical tasks). Eye movement can provide cues on sleepiness. Hence, eye-tracking metrics have the potential to detect sleepiness.

In this research, we used a systematic analysis approach to identify eye-tracking metrics for sleepiness. We used several databases to identify independent experimental studies that have used eye-tracking metrics to assess sleepiness. We identified 25 studies that included 674 participants where the participants’ data were captured both in an alert state and in a sleep-deprived state. In the analysis, we …

A Meta-Analysis: Gamification In Education, Yalin Wang

Masters Theses

“Gamification has been used in a variety of contexts including education. In order to understand the effects of gamification in education, a meta-analysis was conducted. A bottom-up approach was used to analyze the effects of game design elements on learning outcomes found in the literature search. The result suggests that gamification can enhance student learning outcomes. Elements such as points, leaderboards, competitions, progress bars, feedback, and collaboration have medium to large effect sizes. Gamification also has larger effects on young children in elementary education than learners at other education levels. The study offers suggestions and guidelines for educators on the …

The Kitchen Table: Relationships With The People, Food And Land That Sustain Us, Chelsey Frost

Masters Theses

The purpose of this paper is to examine the ways in which interactions with food and around food affect an individual’s sense of self, connection to community as well as to friends and family, and sense of place. Short, personal narrative gives way to discussion of such themes and ideas as home, homemade food and terroir. It becomes clear that acts of celebration of and gratitude for food, particularly in connection with a specific place or line of heritage, play necessary roles in the development of our personal identities and in our search for belonging. These stories are based on …

Sensuous Knitting: Making Practice That (Re)Members Ecological Entanglement, Sarah Manion

Masters Theses

Conceptualizing the climate crisis as a system of broken relationships calls for a broader understanding of entangled ecological interrelationality. Developing deep and effective responses relies on a stamina for complexity grounded in a recognition and acknowledgement of the way ecological entanglements are revealed to us. Within this frame, practice may provide unique opportunity for the development and promotion of this attuned awareness. To explore this possibility, the personal practice of sensuous knitting is used in this thesis as a way to demonstrate the intersections between intellectual modes of understanding and embodied forms of knowing. Using elements of autoethnographic narration of …

Mobility Justice And Social Capital In Strawberry Mansion And Kensington, Philadelphia Pa, Rebecca Fruehwald

Masters Theses

This thesis explores the theoretical and practical relationship between mobility justice and social capital. A literature review establishes the theoretical relationship through an overview of history and policy. The relationship is then explored through a case study of Strawberry Mansion and Kensington neighborhoods in Philadelphia. These sections are then connected by considering how they are both impacted by the larger system of capitalism. The real-world example of gentrification is given for how all these elements interact and affect each other, and the practical relationship between mobility justice and social capital is established. Finally, policy implementations and paths for possible future …

Exploring Multimedia Storytelling As A Novel Tool To Inspire Americans To Participate In Wildlife Conservation, Megan Brief

Masters Theses

Human and nonhuman animal lives are intimately entangled. In the age of the Anthropocene, it is imperative to reexamine our proximity and kinship with nature. Human-wildlife conflict can evolve into coexistence through conservation efforts marked by creativity and compassion. To inspire conservation action among North American audiences, we must enact novel ways of disseminating scientifically technical concepts. Multimedia storytelling can encourage equitable involvement among lay participants in conservation spaces. When inclusive of Indigenous knowledges, and conscious of damage narratives, such innovative stories can empathetically communicate wildlife degradation and injustices, as well as animate vulnerable human and nonhuman communities.

Growing Quelites In The City: Exploration On Memory And Food Sovereignty In Mexico City, Paola Valeria Ramirez Ensastiga

Masters Theses

In Mexico, as in the world, the number of people living in urban areas is increasing. In addition, urbanization directly generates a fragmentation of the natural habitat and causes the loss of biodiversity. Native edible crops are also being threatened by a constant decline in biodiversity, causing negative ecological, economic and even cultural impact. Until now, the main guardians of the edible biodiversity have been indigenous peoples. Several authors agree that the way in which indigeous people relate to nature may shed some light on how to face the ecological and climate crisis that we are experiencing today. I argue …