Digital Commons Network^™

Spectral Dependence Of Deep Subwavelength Metallic Apertures In The Mid-Wave Infrared, Heath Gemar

Electronic Theses and Dissertations, 2020-2023

For two decades, extraordinary optical transmission (EOT) has amplified exploration into subwavelength systems. Researchers have previously suggested exploiting the spectrally selective electromagnetic field confinement of subwavelength cavities for multispectral detectors. Utilizing the finite-difference frequency domain (FDFD) method, we examine electromagnetic field confinement in both 2-dimensional and 3-dimensional scenarios from 2.5 to 6 microns (i.e., mid-wave infrared or MWIR). We explore the trade space of deep subwavelength cavities and its impact on resonant enhancement of the electromagnetic field. The studies provide fundamental understanding of the coupling mechanisms allowing for prediction of resonant spectral behavior based on cavity geometry and material properties. …

The Elderly Voter As Collateral Damage: The Consequences Of Voter Restriction On Elderly American Voter Turnout, Mia Warshofsky

Electronic Theses and Dissertations, 2020-2023

Voting is an indispensable feature of American democracy. Voting amplifies the voice of the electorate. Not voting disempowers individuals and communities. Despite protective legislation such as the Voting Rights Act of 1965, many Americans experience electoral difficulties today. Following record-breaking turnout in the 2020 presidential election and under the guise of election security, some Republican lawmakers have introduced and supported legislation that restricts the ability of many Americans to vote. Research on communities of color, low-income communities, and disabled communities demonstrates the inhibitive effect of these measures. In contrast, conventional wisdom claims that older voters are more likely to vote …

Effects Of A N2-Fixing Biofertilizer On The Rhizosphere Microbiome And The Influence Of Biochar On Soil Fertility And Microbial Communities, Sarbjeet Niraula

Biology Dissertations - Archive

The rhizosphere microbiota and endosymbionts are the major contributors to biogeochemical cycling and significantly impact the associated host plant. Their association with plant roots is inevitable for plant health and development. The application of bio inoculants that promote plant growth and productivity is a promising alternative to chemical fertilizers in agricultural fields because of their nutrient solubilization activity, and are considered environmentally safe. However, their impact on the soil microbiome has been least studied. The use of bio-inoculants may have favorable or unfavorable impacts on the native microbial community in the rhizosphere. Therefore, we attempt to evaluate the effects of …

Decision Tool For Prioritizing Bridge Repair Or Replacement, Nyoka Amy Florius

Civil Engineering Dissertations - Archive

Bridges are typically damaged/deteriorated due to various factors that require close evaluation to make informed decisions about repair/replacement. There are several aspects of study to evaluate bridges for repair/replacement, such as age, structural adequacy, and frequent usage. Further, bridges which are in poor condition must be identified to mitigate their damage/deterioration and as a result, maintain a safe environment for users. Therefore, to assess the need for funding, state Departments of Transportation are required to evaluate bridges by considering several factors, while prioritizing safety. In Texas, the Highway Bridge Program is responsible for funding bridges which are listed for repair/replacement. …

Improving Probabilistic Quantitative Precipitation Forecasting Using Machine Learning And Statistical Postprocessing Methods, Mohammadvaghef Ghazvinian

Civil Engineering Dissertations - Archive

The objective of this research is to address the limitations inherent in conventional statistical postprocessing schemes to generate probabilistic quantitative precipitation forecasts (PQPFs) and improve postprocessed PQPFs quality through introducing new robust statistical models and machine learning frameworks. This dissertation comprises three main elements. First, a new, two-part scheme for creating PQPFs from single-valued quantitative precipitation forecasts is introduced. This scheme, herein referred to as the Mixed-type Non-Homogenous Regression (MNHR), combines the use of logistic regression for estimating rainfall intermittency, and non-homogeneous regression for estimation of additional parameters of the conditional distribution. The performance of MNHR is evaluated relative to …

Volatiles Characterization During Whiskey Production Using Headspace - Solid Phase Microextraction - Gas Chromatography - Mass Spectrometry, Robert H. Magnuson

Chemistry & Biochemistry Theses - Archive

Whiskey is the second most consumed distilled alcoholic beverage type, by brand, on the planet behind Chinese Baijiu. A prominent component in many varieties of whiskey, maize, contributes a wide profile of compounds that undergo modification in the production pathway, ultimately influencing the final flavor profile. In this study, headspace/solid phase microextraction-gas chromatography/mass spectrometry (HS/SPME-GC/MS) was used to characterize the volatile profile of 5 different maize varieties, mashes produced from each, and 4 post-fermentation mixtures. Headspace sampling was performed using a high capacity SPME Arrow device, in an effort maximize the species detected. Compound identification was supplied by matches within …

Wretches, Rogues, And Rebels: Smugglers In English Print Culture 1660-1766, Jacob M. Jones

History Dissertations - Archive

This dissertation examines smugglers as they appeared in English print culture from their first appearance as "smuckellors" in a 1661 Royal Proclamation to 1766 when Parliament repealed the Revenue Act of 1764 amid protests over the government's crackdown on the vital molasses smuggling trade. Since the nineteenth century, historians have focused on community acceptance of smuggling, arguing that most Britons did not believe smuggling was criminal. However, this dissertation reveals a strong counter-narrative that has not been fully explored. From the nineteenth century onward, smugglers were romanticized and depicted as "honest thieves" and integral parts of coastal British communities. In …

Temperature Changes During Implant Osteotomy Preparations In Human Cadaver Tibiae Comparing Mis® Straight Drills With Densah® Burs, Andrew C Griggs, Crystal M Fausett, Richard J Simonson, Kimberly N Williams, Tiffany M Bisbey, Elizabeth H Lazzara, Joseph R Keebler, Deborah Diazgranados, Vimal K Mishra, Eric J Thomas, Eduardo Salas

Faculty, Staff and Student Publications

INTRODUCTION: Telerounding is slated to become an important avenue for future healthcare practice. As utilization of telerounding is increasing, a review of the literature is necessary to distill themes and identify critical considerations for the implementation of telerounding. We provide evidence of the utility of telerounding and considerations to support its implementation in future healthcare practice based on a scoping review.

METHOD: We collected articles from nine scientific databases from the earliest dated available articles to August 2020. We identified whether each article centered on telerounding policies, regulations, or practice. We also organized information from each article and sorted themes …

The Genetics Of Kidney Disorders In Phelan-Mcdermid Syndrome, Megan Mccoy

All Dissertations

No abstract provided.

Optimizing Provision Of Rights-Based Family Planning Services By Community Midwives (Cmws) In Tando Allah Yar, Iram Kamran, Rehan M. Niazi, Ramsha Hasham, Haider Safdar Abbasi

Sexual and Reproductive Health, Rights, and Choices

Community Midwives (CMWs) are a key cadre of community-level reproductive health service providers in Pakistan. CMWs provide a range of maternal and child health (MCH) services including family planning (FP), but due to a lack of supplies and training and other reasons they are currently not providing FP services. This pilot study examined the effects of providing training in client-centered FP service provision, a regular supply of free contraceptives, and necessary equipment on the uptake, outreach, and quality of CMWs’ FP services. The study was conducted in Tando Allah Yar, a district of Sindh with average provincial demographic and socioeconomic …

In-Person Data Collection During Covid-19: Considerations And Lessons Learned From Conducting Mixed Methods Social And Behavior Change Research In Niger, Breakthrough Research

Sexual and Reproductive Health, Rights, and Choices

This brief provides an overview of considerations and lessons learned from conducting in-person mixed methods research in the context of COVID-19. It is intended for global and regional public health program implementers, evaluators, and donors in USAID priority countries. Using an applied example from the RISE II Integrated SBC Evaluation carried out by Breakthrough RESEARCH, the brief provides an overview of the COVID-19 situation in Niger and describes how researchers deliberated on various data collection strategies to conduct a mixed methods evaluation during a global pandemic. The brief then illustrates the steps undertaken to develop and implement a COVID-19 phased …

Open Educational Resource Policy Considerations And Recommendations: Arguments For Library Involvement, Aisling Coyne, Robert Alfis

Irish Journal of Academic Practice

Open Educational Resources (OER) have the potential to provide great benefit to those both in, and outside of, higher education. With financial pressure existing for both students, and libraries, OER could be uniquely positioned to alleviate some of this strain. This paper examines the role OER policy plays in the development and use of OER in the context of the 2019 UNESCO OER recommendations for Ireland as well as the impact policy, or lack thereof can have on an institutional level. Librarians and the librarian skill such as in knowledge and experience in navigating copyright, licensing issues, intellectual property, rights …

Every Day Is A School Day: Educators Experiences Of Utilising An Integrative Framework Within Social Care Education In Ireland, Jennifer Mcgarr, Margaret Fingleton, Noel Molloy, Gillian Larkin, Marian Connell, Ailish Jameson, Anne Marie Shier

Irish Journal of Academic Practice

Within an evolving regulatory context, this paper identifies some of the emergent challenges and opportunities for social care education in Ireland. The paper discusses the potential offered by the Integrative Framework for Practice Teaching to address some of these contextual demands and examines the pedagogy underpinning this approach. A number of educators’ experiences of using this framework are provided, demonstrating how they innovatively integrated the framework with commonly used teaching and assessment strategies within social care education, such as mind-mapping, problem-based learning and the use of creative media. These experiences are offered to other educators who may wish to utilise …

Just "Dropped": Nike's Latest Trademark Foreshadows The Demise Of The Knockoff Sneaker Industry And Limits Consumer Choice, Claudia Perez

North Carolina Journal of Law & Technology

No abstract provided.

Integrating Multiple Survey Techniques To Document A Shifting Bat Community In The Wake Of White-Nose Syndrome, D. Scott Reynolds, Kevin Shoemaker, Susi Von Oettingen, Stephen Najjar, Jacques P. Veilleux, Paul R. Moosman Jr

KIP Articles

The long-term study of bat communities often depends on a diverse set of sampling methodologies that are chosen based on the species or habitat management priorities of the research project. Integrating the data from a diverse set of methodologies (such as acoustic monitoring and mist net sampling) would improve our ability to characterize changes in community structure or composition over time, such as one would expect following an emergent infectious disease such as white-nose syndrome. We developed a Bayesian state-space model to integrate these disparate data into a common currency (relative abundance). We collected both acoustic monitoring and mist net …

Using Iphone Significant Location Data To Improve Air Pollution Exposure Estimation, Elizabeth Eastman

Electronic Theses and Dissertations, 2020-2023

An accurate estimation of human exposure to ambient air pollution is crucial for air pollution health studies. Time-activity patterns may introduce substantial uncertainties in exposure estimation. As smartphones are becoming increasingly popular and their ownership is becoming ubiquitous in the US. Virtually all smartphones can collect location data, and such data is continuously somewhere. Therefore, it is clear that such stored location data has the potential to be used for characterizing an individual's time-activity patterns for air pollution health studies. However, studies on the accuracy and feasibility of using a smartphone's location data in air pollution exposure estimation are still …

Using Lidar To Locate Indigenous Mound Structures Along The St. Johns River In The Ocala National Forest, Taylor Collore

Electronic Theses and Dissertations, 2020-2023

The Indigenous people of Florida terraformed the region's relatively flat landscape into monumental vantage points for residence, burial, and displays of regional power. Known as mound structures today, these long-abandoned sites are now obscured by dense vegetation and thick tree canopies making their rediscovery difficult. Using Light Detection and Ranging (LiDAR) technology these lost sites can be located remotely for protection and study. In this research, LiDAR is used to locate Indigenous mound sites along the St. Johns River within the Ocala National Forest. Using free an open source geographic information systems (GIS) and similar software, LiDAR point cloud data …

Utilizing High Throughput Computing Techniques For The Predictions Of Spectroscopic Properties Of Astrophysically Relevant Molecules, Brian Ferrari

Electronic Theses and Dissertations, 2020-2023

Here, we utilize Quantum Chemistry (QC) approaches to predict the structures, vibrational frequencies, infrared intensities and Raman activities of unusual molecular species using the General Atomic and Molecular Structure System (GAMESS(US)) package. A Python-based software, AutoGAMESS, was developed to automate the workflow and take advantage of High Throughput Computing (HTC) techniques enabling the automated generation of spectroscopic data from hundreds of calculations. This approach was utilized to determine these properties for a series of carbon oxides (C2On; n = 3 to 4), anticipated to be produced during the radiation of pure carbon dioxide ices, under conditions relevant to the interstellar …

High Spectral Brightness, Broad Area Quantum Cascade Lasers, Enrique Sanchez Cristobal

Electronic Theses and Dissertations, 2020-2023

Quantum cascade lasers are unipolar semiconductor lasers that offer a unique combination of compact size, high efficiency, high optical power, and flexibility to achieve a targeted emission wavelength with the same laser core material composition, employing so-called bandgap engineering. Since their invention in 1994, watt-level CW power with 5 to 20 % wallplug efficiency was demonstrated for QCLs throughout the entire 4 to 12 µm range, which makes QCLs very attractive for a number of practical applications. Our earlier work on broad-area QCLs emitting in the 4.6 µm to 5.7 µm spectral range demonstrated that CW power scaling with lateral …

Assessment Of Leadership Styles And Lean Six Sigma Critical Success Factors In The Aerospace And Defense Industry, Corey Gellis

Electronic Theses and Dissertations, 2020-2023

The Aerospace and Defense industry has shifted into a global competitive market that is prioritizing innovative advancements in technological capabilities. Corporations are now having to further develop customer focused strategies based in adding value while reducing costs. Large manufacturing corporations often embrace continuous improvement methodologies, such as Lean Six Sigma, for process improvement. Many organizations have received minimal benefit from the methodology which may link back to leadership and culture. This research examined which styles of leadership are most effective when trying to gain the most value from Lean Six Sigma within manufacturing. The research study surveyed 112 black belt …

Anomaly Detection And Failure Prediction In Gas Turbines, Vipul Goyal

Electronic Theses and Dissertations, 2020-2023

This study is based on time-series data taken from the combined cycle heavy-duty utility gas turbines. For analysis, first, a multi-stage vector autoregressive model is constructed for the nominal operation of powerplant assuming sparsity in the association among variables, and this model is used as a basis for anomaly detection and prediction. This prediction is compared with the time-series data of the powerplant test data containing anomalies. Granger causality networks, which are based on the associations between the time series streams, can be learned as an important implication from the vector autoregressive modelling. This method suffers from the disadvantage that …

Difficult History Education Via Design-Based Research: Teaching Historical Empathy Using Lucie Aubrac And The French Resistance As A Case Study, Sahar Eissa

Electronic Theses and Dissertations, 2020-2023

Technology-enhanced learning environments (TELEs) are educational tools that enable students to acquire knowledge, improving the quality of their educational experience. Educators face many challenges when teaching difficult histories about French resisters in World War II, such as Lucie Aubrac. Resisters' histories include deep emotions, choices, and hard decisions. There is a need for a new approach for teaching these topics and designing innovative digital tools to encourage educators and students to explore them. The current study designs and evaluates a TELE to teach difficult history via a historical empathy approach that engages students with difficult histories and provides them with …

The Effect Of The Medilepsy Mobile App On Medication Adherence And Transition Readiness In Adolescents And Young Adults With Epilepsy, Michelle Tall

Electronic Theses and Dissertations, 2020-2023

Medication nonadherence and lack of transition readiness are global challenges for individuals living with epilepsy and their families. Medication adherence measures the level of compliance with healthcare providers' treatment recommendations. Transition readiness is the gradual steps patients take to develop independence and self-management as they transfer from pediatric to adult healthcare models. Factors impacting medication adherence and transition readiness skills include developmental stage/age; forgetfulness; family/caregivers; socioeconomic status; knowledge/attitude about the disease; side effects; number of medications; and subjective and objective quantifications of adherence. One promising intervention for patients and families is mobile technology used for reaching, teaching, and communicating. However, …

Wavelet Particle Hydrodynamics For Less Smooth Flow, Oddny Brun

Electronic Theses and Dissertations, 2020-2023

The purpose of this research was to improve the smoothing operation in smoothed particle hydrodynamics, SPH, when the flow of matter is not smooth. Our main focuses are on the kernel selection, identifying the discontinuities in the sequences to be smoothed, and use of the Laplacian as opposed to artificial viscosity for improved physical accuracy. The results show that alternative kernels result in differences in how matter flows. These effects are explained by the kernels' gradient and Laplacian properties. Five alternative kernels were included in our analysis and our SPH-based simulation cases. Further, the sequences to be smoothed by the …

Nonlinear Light-Matter Interactions In Novel Crystals For Broadband Mid-Infrared Generation, Taiki Kawamori

Electronic Theses and Dissertations, 2020-2023

Mid-infrared (MIR) laser sources have demonstrated diverse applications in science and technology. For spectroscopy applications, numerous molecules have unique absorption features in this range, and one needs a spectrally broad coherent laser source for parallel detection of mixtures of species. Frequency down-conversion in nonlinear optical materials via second-order nonlinear susceptibility is one of the promising techniques to generate the spectral coverage of more than an octave in the MIR, assisted by emerging novel crystals. The nonlinear light-matter interactions in such special crystals as ZnSe ceramics have not been analyzed. Additionally, through the use of high-intensity few-cycle optical pulses, high-order nonlinear …

Communities Of Play And Practice: Collaborating With Audiences And Coworkers In Performative Online Spaces, Paul Oppold

Electronic Theses and Dissertations, 2020-2023

This study describes an ethnographic investigation of Communities of Play within Communities of Practice. As professional 'content creators', whose 'work' is 'play', are increasingly interacting with non-professional content consumers, whose 'play' is a kind of 'work', the barriers between 'work' and 'play' are increasingly dissolving. The purpose of this study was to examine the nature and frequency of the professionals' interactions with coworkers in an office and with the content consumers while working from home. Data were collected in the form of gameplay videos uploaded by the professional streamers from January of 2017 to March of 2018, downloaded by the …

Creativity As A Resource: How Creativity Influences The Appraisal Of Work Stressors And Subsequent Strain, Alyssa Perez

Electronic Theses and Dissertations, 2020-2023

Although creative behaviors are known to have positive effects on general well-being, little research has looked at the relationship between an individual's creativity and stress within the context of work. This research explored how creativity may work as a buffer against the strain of job stressors. In study 1, six vignettes were developed using Role Stressor Theory (Kahn et al., 1964) and the Challenge/Hindrance Framework of stress (Cavanaugh et al., 2000). A sample of 164 undergraduate students responded to the vignettes and results showed that trait-level creativity was directly related not only to the creativity of the solutions the participants …

The Potential Of Location Data For Contact Tracing And Understanding Individual Mobility During The Covid-19 Pandemic, Marcus Figaro

Electronic Theses and Dissertations, 2020-2023

In this study, we first review contact tracing methods used during the COVID-19 pandemic and provide an analysis of the benefits and drawbacks of different data collection and privacy protection methods. Our findings provide the benefits and drawbacks of using GPS versus Bluetooth for contact tracing, as well as the different data collection and storage methods and their effectiveness in protecting user privacy. We then analyze Twitter data to understand individual mobility behavior and sentiment by using a Natural Language Processing tool on text content of user tweets and Tweet coordinate data. Social media's ability to provide data on location …

Adopting Accessibility Guidelines For Videogames To Collectible Card Games, Cooper Biancur

Electrical Engineering Master’s Theses

The development of accessible video games has been discussed through multiple publications in the 21st century; however, little to no attention has been given to non-electronic gaming. Like video games, Collectible Card Games (CCG) have also gained massive popularity, but no accessible guidelines have been created to help the disabled better play them. The need for inclusion in gaming is critical because it can act as a medium for social interaction and a learning tool for teaching. Today offers numerous technologies that can help those with disabilities, such as microcomputers, Artificial Intelligence (AI), Optical Character Recognition (OCR), and Text to …

Anticipatory Tonal Variations Can Facilitate Spoken-Word Recognition: A Visual World Eye-Tracking Study, Jeffrey Jack Green, Yan Sun, Chilin Shih

Faculty Publications

The acoustics of speech sounds can vary dramatically depending on phonetic context, yet listeners can reliably process spoken language in a rapid and seemingly effortless manner. Previous research suggests that acoustic variations in speech can actually facilitate, rather than disrupt, the processing of spoken language, and sometimes listeners can even use fine-grained acoustic cues in the unfolding speech signal to predict the sound(s) of an upcoming word. For example, it has been reported that listeners fixate their eyes on target words faster when the pre-target word contains compatible vowel-to-vowel coarticulation cues [1, 2]. Similarly, pitch accents have been found to …