Digital Commons Network^™

Impacts Of Cellphone Usage On Adolescent Social And Emotional Development, Chelsea N. Hammer

Masters Projects

Adolescent cellphone use has a negative impact on the school environment. This project explores how cellphones effect youth social and emotional development. The literature is reviewed as it relates to cellphone usage and emotional well-being, mental health, intrapersonal skill development and interpersonal growth. Cellphone addiction amongst teenagers is discussed as well protective factors to mitigate the damage cellphone use inflicts on student social and emotional development. This project advocates for making school stakeholders aware of these harmful effects so as to consider a re-examination of school cellphone policy. Incorporating periods of unplugging during the school day as well as using …

Statistical Methods For Predicting E-Cigarette Use Events Based On Beat-To-Beat Interval (Bbi) Data Collected From Wearable Devices

Faculty, Staff and Student Publications

The prevalence of e-cigarette use among young adults in the USA is high (14%). Although the majority of users plan to quit vaping, the motivation to make a quit attempt is low and available support during a quit attempt is limited. Using wearable sensors to collect physiological data (eg, heart rate) holds promise for capturing the right timing to deliver intervention messages. This study aims to fill the current knowledge gap by proposing statistical methods to (1) de-noise beat-to-beat interval (BBI) data from smartwatches worn by 12 young adult regular e-cigarette users for 7 days; and (2) summarize the de-noised …

Computer Simulation Of Catheter Cryoablation For Pulmonary Vein Isolation, Solange I. Rivera, Clara P. Bernal, Rafael Martínez-Peláez, Rogelio Robledo-Nolasco, Gerardo De León-Larios, Vanessa G. Félix, Rodolfo Ostos, Gladys Maestre, Jesus Melgarejo, Luis J. Mena

School of Medicine Publications

Cryoablation is a well-established medical procedure for surgically treating atrial fibrillation. Cryothermal catheter therapy induces cellular necrosis by freezing the insides of pulmonary veins, with the goal of disrupting abnormal electrical heart signals. Nevertheless, tissue damage induced by cold temperatures may also lead to other complications after cardiac surgery. In this sense, the simulation of catheter ablation can provide safer environments for training and the performance of cryotherapy interventions. Therefore, in this paper, we propose a novel approach to help better understand how temperature rates can affect this procedure by using computer tools to develop a simulation framework to predict …

Safer: Sub-Hypergraph Attention-Based Neural Network For Predicting Effective Responses To Dose Combinations, Xiaoqian Jiang

Faculty, Staff and Student Publications

BACKGROUND: The potential benefits of drug combination synergy in cancer medicine are significant, yet the risks must be carefully managed due to the possibility of increased toxicity. Although artificial intelligence applications have demonstrated notable success in predicting drug combination synergy, several key challenges persist: (1) Existing models often predict average synergy values across a restricted range of testing dosages, neglecting crucial dose amounts and the mechanisms of action of the drugs involved. (2) Many graph-based models rely on static protein-protein interactions, failing to adapt to dynamic and higher-order relationships. These limitations constrain the applicability of current methods.

RESULTS: We introduce …

On The Role Of Perceived Safety Concerns On Public Acceptance Behavior Of Autonomous Vehicles, Fatemeh Nazari, Mohamadhossein Noruzoliaee, The University Of Texas Rio Grande Valley

Civil Engineering Faculty Publications

Despite maturing road tests and limited commercial mobility services with autonomous vehicles (AVs), the existing behavioral research, surveys, and polls suggest that, to date, the public is largely reluctant or neutral to accept this emerging technology due to potential lurking failures and malfunctions in unexpected weather/road conditions and cyber-attacks. The persistence of this demand landscape for AVs could curb the promising economic, societal, and environmental benefits of prevalent autonomous mobility. Proactive policy interventions are thus much needed early on to provide impetus for AV acceptance, which should be informed by an in-depth understanding of the AV acceptance behavior of the …

A Quality Improvement Project: Implementing A Mental Health Screening Program For International Business Travelers., Joyce Ighedosa

Doctor of Nursing Practice Final Project Abstract

A Quality Improvement Project: Implementing a Mental Health Screening Program for International Business Travelers.

PURPOSE The purpose of the Quality Improvement project was to implement a mental health screening program for international business travelers in an oil and gas organization. The Patient Health Questionnaire (PHQ-2) was implemented

BACKGROUND The project was implemented in a global oil and gas organization. The original medical screening for pre-travel preparation was on identification of physiological disorders, proper management of identified disease processes; infectious disease prevention; vaccine review and update; malaria chemoprophylaxis and vector control. Mental Health was not reviewed.

METHODOLOGY The PHQ-2 was …

Uncertain Future Dwelling: Emergent Interiors Of The Metaverse, Belinda J. Dunstan, Michael Stonham, Demet Dincer

Interiority

Contemporarily, a flood of digital interior architectural imagery has emerged of spaces developed for the Metaverse, a forthcoming immersive 3D virtual world. These spaces are not bound by the conventions of architectural practice nor the demands of the physical world, providing an opportunity for design exploration and innovation in the future of interiors and positing challenges to core architectural concepts that have accompanied traditional practice. This research offers a visual analysis of aesthetic trends and new typologies present in the interior architectural spaces designed for the Metaverse. The analysis features a curated and collaged collection of works from ten creators …

Inheritance And Development Of Chinese Kang In Interior Space, Long Yang, Safial Aqbar Zakaria

Interiority

The Chinese kang is an ancient technology that combines an integrated household system for cooking, sleeping, and heating. Most of the existing research focuses on the energy performance of Chinese kang and its impact on the interior environment and tries to adapt it to the modern interior space through the improvement of its technology. However, if we only focus on the research and improvement of the technical level of Chinese kang, it is not conducive to the effective inheritance and development of the culture. This paper studies the concept of 'inheritance and development' of Chinese kang culture more comprehensively …

Examining Dwelling Interior Conditions For Informal Settlement Upgrading Along The Mae Kha Canal, Chiang Mai, Patcharaporn Duangputtan, Nobuo Mishima

Interiority

This article delves into the internal features of habitat in slum-like informal settlements, focusing on the challenges faced by the locale in the Mae Kha Canal informal settlements in Chiang Mai, Thailand. The study aims to clarify the dwelling characteristics as well as understand the interplay between housing and the living circumstances of the occupants. A mixed-methods approach was utilised, primarily employing field surveys, house investigation including arrangement and utilisation of space, and in-depth interviews with residents. A total of 80 households were sampled and analysed. The findings reveal that the previous relocation plans made by local authorities, which offered …

Incomplete Faces Do But Masked Faces Do Not Affect Mind Perception, Farid Pazhoohi, Keina Aoki, Alan Kingstone

School of Psychology

The human face plays a critical role in how we perceive the minds of others. The current research across two studies explored whether face masks also impact mind perception, with the expectation that they lead to lower attributions of agency and experience to individuals, making them seem less mentally capable due to their association with reduced facial expression perception and impaired communication. In the first study, participants’ ratings of masked and unmasked faces for agency and experience did not yield significant differences, suggesting that wearing a face mask does not affect the perception of the mind. To explore whether these …

Thermal Oxidative Degradation Of Polystyrene Plastics Used For Food Packaging During Incomplete Waste Incineration, Maycee Hurd

Civil Engineering ETDs

We identified the physical and chemical degradation of polystyrene (PS) plastic used for food packaging after thermal oxidative weathering. Open waste incineration is a widely used waste management practice in isolated and underserved communities. However, the generation of partially incinerated plastics and microplastics (MPs) from this practice is overlooked. Near surface XPS C 1s high resolution analyses show an increase in the intensity of peaks greater than 285 eV corresponding to C/O bonds after burning of PS. Bulk analyses using ATR-FTIR show that thermal oxidation decreased the alkene (3040-3000 cm-1) and alkane (3000-2850 cm-1) C-H stretch signals suggesting PS chain …

Understanding Longitudinal Top-Down Cracking To Enhance Asphalt Mix Design, Md Mehedi Hasan

Civil Engineering ETDs

This study focuses on developing a deformation rate-dependent bilinear constitutive equation for cohesive zone modeling of asphalt concrete's fracture process zone to accurately predict the longitudinal top-down crack initiation and propagation. A mathematical model has been developed for the AC materials' deformation rate-dependent cohesive zone fracture characteristics and incorporated into the ABAQUS software as a customized user element subroutine (UEL). The developed model has been validated by comparing the simulation results with the laboratory test results, which show good agreement with the results. In addition, an enhanced asphalt mix design approach, referred to as SP5, has been developed to mitigate …

“How I Dress Is No One’S Business!”: Fashion As A Subversive Language Of Resistance Among Female Christian Celebrities In Ghana, Amanda E. Gyesi

Communication ETDs

Influenced by burgeoning literature on feminism and feminist theories, specifically within the African context, I analyze the intersection of religion and celebrity culture among a select group of women in Ghana. Using the African feminist critical discourse analysis, guided by Stuart Hall’s encoding and decoding model, this research examines how female Christian celebrities in Ghana enact resistance, project their agency, and shape their identities through their fashion statements and sartorial choices, hence contributing to the broader discourse on fashion communication among religious women.

Through a critical analysis of Instagram comments and YouTube interview transcripts, I argue that fashion communication among …

Tuning Of Real-Time Optimization Of Heliostat Concentrated Solar Power, Zachary L. Bernius

Mechanical Engineering ETDs

This paper investigates a real-time optimization algorithm for autonomously calibrating the heliostats in a concentrated solar power plant with the goal of maximizing power generation. The current state-of-the-art uses human operators to provide feedback for the heliostats. We use real-time/online measurements to produce an autonomous closed-loop system that does not require human intervention. The paper investigates tuning the gain of the real-time optimization algorithm to quickly and robustly converge to the optimal alignment and stabilize the system. The exponential stability of the system is certified using a quadratic Lyapunov function and static output feedback methods to couple the Lyapunov functions …

Fabrication And Characterization Of A Monolithic Photonic Integrated Circuit With High-Aspect Ratio Photonic Device Structures, Sami A. Nazib

Optical Science and Engineering ETDs

The focus of this work was to create a process to fabricate an InP-based Photonic Integrated Circuit (PIC). The design of the PIC required the photonic components of this device to be created by deep etching of an epitaxially-grown multilayer structure. Therefore, a novel dry etching process was developed to produce very high aspect- ratio (HAR) features. This process not only involved the development of dry etch chemistry but also the engineering of a metal mask structure. The next step of the challenge was to use a polymer-based material that would have two functions: cladding for the etched photonic components …

Grievability And The Contingency Of Life Value In Twenty-First-Century Science Fiction, Emily A. Reiff

English Language and Literature ETDs

Using Judith Butler’s framework of grievability, this dissertation explores twenty-first-century science fiction by British, Irish, and Caribbean authors whose novels grapple with legacies of colonialism and imperialism that relied on dehumanization and subjugation. Beginning with Sarah Maria Griffin’s Spare and Found Parts (2016), chapter one explores neocolonial rationales—purportedly based on health—which recreate colonial divisions of class and labor and enforce systems of diminishing grievability in a post-apocalyptic Irish context. Chapter two contends that Kazuo Ishiguro’s Klara and the Sun (2021) illustrates the danger inherent to value systems that center “normative” embodiment in worlds that reconfigure hypercapacitated human beings as the …

Assessing Consequences And Relevant Thresholds Of Seismic Events In Puerto Rico To Aid The Future Creation Of Consequence-Driven Scenarios, Yahaira D. Alvarez-Gandia

Geography ETDs

Puerto Rico frequently experiences damaging earthquakes due to its location on the northeastern margin of the Caribbean Plate. Its unique combination of factors, including high population, informal construction practices, and environmental risks, such as tsunamis or landslides, create a heightened risk of loss of life and property. Within this context, earthquake scenarios are vital communication, mitigation, and preparedness tools. They provide the opportunity to think critically about possible alternatives to reduce the risks and impacts of these unpredictable events. As an initial step for integrated earthquake scenario development, this study uses semi-structured interviews and the analysis of government reports to …

Mixed Potential Sensor For Natural Gas Leak Detection Design, Manufacturing, And Simulation, Sleight Halley

Chemical and Biological Engineering ETDs

There is a need for a low-cost robust sensor accurately detecting leaks from oil and gas infrastructure. This work presents the development of an electrochemical sensor based on an yttria stabilized zirconia (YSZ) electrolyte with La_0.87Sr_0.13CrO₃, Indium Tin Oxide (In₂O₃ 90 wt%, SnO₂ 10 wt%), Au, Pt electrodes. Selectivity to target gasses of the three sensing electrodes in conjunction with machine learning allows for the accurate discrimination between possible methane sources as well as the quantification of methane concentration. Sensor sensitivity is improved through a low-ionic conductivity substrate of magnesia …

(Dis)Connecting Incommensurable Relationalities: Aesthetics Of Desirable Citizenship & Interethnic Solidarity In Vietnamese/American Diasporic Media, Anh A. T. Nguyen

Communication ETDs

Employing critical diasporic rhetoric to articulate the pull and push glimmer of essentialist and nationalistic agendas of constructing Vietnamese diasporic subjectivities, I elucidate the complicated structure of diasporic nationalism that gives shape to ambiguities, paradoxes, and contradictions of Vietnamese diasporic withdrawal and regroupment in interethnic politics. Through three case studies explicating Vietnamese diasporic responses to the Chinese virus rhetorics, the appearance of the South Vietnamese flag on January 6 Capitol grounds, and the Atlanta shootings in Saigon Broadcasting Television Networks (SBTN), I highlight how Vietnamese diasporic authorities perform and enact citizenships of becoming desirable, which elevates oppressive forces of ideological …

Labor Market Penalties For Foreign Degrees Among College Educated Immigrants: Update Using 2018 Data, Eunice T. Ajibade

Economics ETDs

This paper revisits the questions posed by Arbeit and Warren in their 2013 study, "Labor market penalties for foreign degrees among college-educated immigrants," using updated data from the 2018 National Survey of College Graduates (NSCG). The original study, which analyzed data from 2003, focused on the economic and employment disadvantages faced by immigrants with degrees from foreign institutions in an increasingly globalized workforce. This updated analysis includes data on 21,071 college-educated immigrants to explore whether the geographic origin of an academic degree continues to influence access to high-quality employment opportunities and whether such impacts differ by gender. My findings reveal …

The Feasibility Of An Acute Bout Of High Intensity Interval Vs Continuous Moderate-Intensity Exercise On Cognition In Chronic Stroke Patients, Anna M. Welch, Marissa Ramirez, Christine Mermier, Flavio De Castro Magalhaes, Jessia D. Richardson, Alyssa Bailly, Terence Moriarty

Health, Exercise, and Sports Sciences ETDs

Objective: The purpose of the present study was to assess the feasibility of chronic stroke patients safely completing an acute 30-minute session of high-intensity interval exercise (HIIE) compared to moderate-intensity aerobic exercise (MIE) on a treadmill, with a focus on cognitive outcomes. Design: This feasibility study utilized a randomized controlled crossover trial with two experimental sessions separated by at least 7 days to minimize practice effects on cognitive assessments. Subjects: Five chronic stroke survivors (m=4, f=1) participated in two randomly assigned experimental sessions (n=5, 60.4 ± 11.3 years, 39.8 ± 41.4% body fat, 32.7±6.3 body mass index [kg/m²])., either a …

Visualization Of Species Tree Likelihood Under The Multispecies Coalescent Model, Jaimasan Sutton

Mathematics & Statistics ETDs

A commonly used tool for evolutionary biologists is a phylogenetic tree that represents the ancestry of a set of species and the evolution of traits. Statistical models can be used to predict the probabilities of gene trees which represent ancestral relationships of genes sampled from species. Because of this, we are able to represent the likelihood of a species tree, which represents the evolutionary history of a set of species, as a function of the counts of gene tree topologies, where each gene tree represents the ancestry of a specific genetic locus for multiple species. Because we can represent these …

Pathways To Social Mobility: Examining Trades As A Career Path For Formerly Incarcerated Individuals, June Jenkins

Dissertations and Theses

Obtaining stable, paid employment is crucial for successful reentry into the community after incarceration, however, formerly incarcerated individuals face extensive barriers when entering the workforce. Trades may present a uniquely attainable career path for this population due to relatively low barriers to entry. To date, there is a lack of research investigating experience-based perspectives on the viability of trades training programs and trades careers in facilitating prisoner reentry. This study employs semi-structured qualitative interviews to investigate perspectives on trades as a career path for formerly incarcerated individuals as well as barriers to accessing and attending trades training programs. Interviewees include …

The Role Of Sensing Modalities In Shaping Collective Motion And Group Behavior, Poorendra P. Ramlall

Doctoral Dissertations and Master's Theses

Collective behavior refers to the coordinated movements that emerge from simple interactions between individuals within a group. Traditionally, researchers have modeled these interactions assuming individuals can sense their surroundings in all directions, like having eyes all around their heads. While this is a useful simplification, it does not capture the diverse ways animals actually sense the world. In this thesis, we take inspiration from the natural world, particularly from animals like bats and dolphins that use a combination of hearing and sight to navigate their environments. We explore how combining these sensory cues in a three-dimensional space affects the way …

Secondary Electron Yield Of Metals, Alloys, And Metal Oxides From First Principles Based Monte Carlo Simulations, Raul E. Gutierrez

Electrical and Computer Engineering ETDs

Density Functional Theory (DFT) based Monte Carlo (MC) simulations of the Sec-
ondary Electron Yield (SEY) of metals, alloys, and metal oxides are performed to
find material properties that could help reduce or influence the multipactor effect.
In order to accurately model the SEY of materials, knowledge of the frequency- and
momentum-dependent Energy Loss Function (qDepELF) is required. The qDepELF
is difficult to determine from experiment; however, it can be calculated from first
principles. The DFT-MC approach for simulating the secondary electron genera-
tion, propagation, and emission processes is described herein. Material properties,
which are calculated using DFT and used …

Short-Time Fourier Transform And Superoscillations, Daniel Alpay, Antonino De Martino, Kamal Diki, Daniele C. Struppa

Mathematics, Physics, and Computer Science Faculty Articles and Research

In this paper we investigate new results on the theory of superoscillations using time-frequency analysis tools and techniques such as the short-time Fourier transform (STFT) and the Zak transform. We start by studying how the short-time Fourier transform acts on superoscillation sequences. We then apply the supershift property to prove that the short-time Fourier transform preserves the superoscillatory behavior by taking the limit. It turns out that these computations lead to interesting connections with various features of time-frequency analysis such as Gabor spaces, Gabor kernels, Gabor frames, 2D-complex Hermite polynomials, and polyanalytic functions. We treat different cases depending on the …

The F Plasmid Conjutome: The Repertoire Of E Coli Proteins Translocated Through An F-Encoded Type Iv Secretion System, Abu Amar M Al Mamun, Kimberley Kissoon, Yang Grace Li, Erin Hancock, Peter J Christie

Faculty, Staff and Student Publications

Bacterial conjugation systems pose a major threat to human health through their widespread dissemination of mobile genetic elements (MGEs) carrying cargoes of antibiotic resistance genes. Using the Cre Recombinase Assay for Translocation (CRAfT), we recently reported that the IncFV pED208 conjugation system also translocates at least 16 plasmid-encoded proteins to recipient bacteria. Here, we deployed a high-throughput CRAfT screen to identify the repertoire of chromosomally encoded protein substrates of the pED208 system. We identified 32 substrates encoded by the Escherichia coli W3110 genome with functions associated with (i) DNA/nucleotide metabolism, (ii) stress tolerance/physiology, (iii) transcriptional regulation, or (iv) toxin inhibition. …

Adaptive Fine-Tuning Based Transfer Learning For The Identification Of Mgmt Promoter Methylation Status, Erich Schmitz, Yunhui Guo, Jing Wang

Faculty, Staff and Student Publications

Background. Glioblastoma Multiforme (GBM) is an aggressive form of malignant brain tumor with a generally poor prognosis. O 6-methylguanine-DNA methyltransferase (MGMT) promoter methylation has been shown to be a predictive bio-marker for resistance to treatment of GBM, but it is invasive and time-consuming to determine methylation status. There has been effort to predict the MGMT methylation status through analyzing MRI scans using machine learning, which only requires pre-operative scans that are already part of standard-of-care for GBM patients. Purpose. To improve the performance of conventional transfer learning in the identification of MGMT promoter methylation status, we developed a 3D SpotTune …

Waking Up The Snake: Ancient Wisdom For Regeneration, Anne Poelina, Bill Webb, Sandra Wooltorton, Naomi Joy Godden

Research outputs 2022 to 2026

The Anthropocene exposes the colonial paradox: ‘that Indigenous people were right all along, that landscapes are neither inert nor mute, but imbued with vitality’ (Ghosh, 2021, p 256). Now, humans must speak out to represent the vital living earth, to return persons of all species to cultures, stories and places. This is called ‘Waking up the Snake’ – using the ancient wisdom of our places to awaken the consciousness of the people to their obligations of stewardship through an ethic of care and love. Serpent goes by many names, being integral to Australia’s Earth Dream, a 65,000-year-old story of sentient …

Exploring The Impact Of Electrocardiographic Parameters On The Risk Of Common Arrhythmias: A Two-Sample Mendelian Randomization Study, Guangheng Wu, Qiaoyun Zhang, Jie Zhang, Jinqi Zhu, Deqiang Zheng, Youxin Wang, Lijuan Wu

Research outputs 2022 to 2026

Background: Observational studies have shown that heart rate (HR), heart rate variability (HRV), P-wave terminal force, P-wave duration, T-wave amplitude and PR interval are associated with risk factors for atrial fibrillation (AF) or bradycardia. Arrhythmias are associated with many causes of hospitalization. However, observational studies are susceptible to confounding factors that have not yet been identified. The objective of this study was to clarify the causal relationships by Mendelian randomization analysis. Methods: We conducted a two-sample and multivariate Mendelian randomization (MVMR) analysis using genome-wide association study (GWAS) data from a European population to assess the total and direct causal effects …