Digital Commons Network^™

The Exponential Function In Discrete Fractional Calculus Under The Delta Operator, Brayton James Link

Masters Theses

"Previously the exponential problem in discrete fractional calculus under the nabla operator was solved with the discrete Mittag--Leffler function. We now show the solution to the exponential problem in discrete fractional calculus under the delta operator, providing multiple derivations of the solution with recursion and Laplace transforms. We also share some computational and numerical results of experiments with different orders of difference to display the nature of the solution" -- Abstract, p. iii

Comparative Study Of Crypto Volatility And Price Forecasting Using A Mixture Of Time Series And Machine Learning Models, Abhishek Kafle

Masters Theses

"Forecasting financial product volatility and price is crucial for informed decision-making in investment and risk management. The models considered include GARCH, LSTM, GRU, BiLSTM, and hybrid models that incorporate various combinations of these models. We present a comparative analysis of forecasting volatility and price using the aforementioned models.

We also introduce a user-friendly dashboard for model training and evaluation, enabling users to upload datasets and customize model parameters. The dashboard allows users to select the type of model, specify the dataset range for training, determine the number of epochs, adjust the number of layers for deep …

Ontogenetically Driven Changes In The Endocranial Anatomy Of Maiasaura Peeblesorum And Its Implications For Sensory Functions, Emma Puetz

Masters Theses

"Hadrosaurids exhibited extreme morphological diversity and behavioral characteristics that can be compared with other, closely related members of Dinosauria – particularly through the study of neuroanatomy. X-ray CT generated endocrania of the Late Cretaceous saurolophine hadrosaur Maiasaura peeblesorum, known as the “good mother” dinosaur, offers a unique opportunity to compare complex ecological behaviors between non-avian dinosaurs and their modern archosaur relatives. The 3D reconstruction software ORS Dragonfly provided linear and volumetric measurements taken from the digital cranial endocast and endosseous labyrinths of three ontogenetically varied M. peeblesorum specimens from the Two Medicine Formation in Montana that were used to …

Evaluating Electromagnetic Interference On Gnss Receivers, Giorgi Tsintsadze

Masters Theses

"Due to high power and efficiency requirements of modern electrical drive system, inverters are utilizing fast-edge pulses as a drive signal. The high frequency pulses contain higher order harmonics can radiate electromagnetic interference above accepted levels. Modelling and understanding the mechanism that causes the radiation is studied, modelled and presented as gray-box model which contains circuit level modelling of coupling between electrical machine phase windings and low power sensor harness. The thesis consists of two main papers. In the first paper, radiated emissions from an electrical drive system is charac- terized thru gray-box modelling where coupling between electrical machine phase …

Sub-Critical Crack Growth And Fatigue Behaviour Of Alkali Silicate Glass, Noah Weyrauch

Masters Theses

"Delayed failure in silicate glasses can be linked to subcritical crack growth (SCCG) where surface defects grow over time until catastrophic failure. This phenomenon originates from stress-enhanced chemical interactions between the environment (e.g. water) and the strained silicate bonds at the crack tip. SCCG must be accounted for to predict the long-term survivability of silicate-glass components. This study compares two methods to measure SCCG parameters for a commercial alkali silicate sealing glass and for a series of binary xNa₂O-(1-x)SiO₂ glasses, where 0.15 ≤ x ≤ 0.35. A constant moment double cantilever beam (DCB) technique was used to …

Protein Turnover Rate And Life History As An Explanation Of The Extreme Difference In Cost Of Biosynthesis In Cockroach Nymphs And Painted Lady Butterfly Larva, Kyara Nicole Holloway

Masters Theses

The cost of biosynthesis in painted lady caterpillars is far lower than that of a red runner cockroach. A promising explanation for this phenomenon is the protein turnover rate for the animal during biosynthesis and tissue maintenance. Previous research has shown that, per gram of body weight, the painted lady butterfly can synthesize a biomass using up to 15x less energy and resources than the cockroach, even under similar conditions. The resulting ratios, especially in respect to growth rate, show a wide disparity between species in such a manner that does support a protein synthesis and degradation rates as a …

Theoretical Modeling And Experimental Investigation Of Phase Selection During Rapid Solidification Of Alloys, Azeez Aremu Akinbo

Masters Theses

"A novel model, rooted in time-dependent nucleation theory, has been created to explore how rapid solidification affects the extended solubility in metal alloys. This model was used to forecast solubility concerning undercooling in multiple binary aluminum (Al) alloys, and its predictions for both eutectic and peritectic systems closely match experimental data. It was demonstrated that this developed model surpasses the T0 line method, which does not consider the kinetic aspects of nucleation. Furthermore, the model can be extended to ternary and multicomponent phases by assuming that the scarcest element or the slowest diffusing component restricts nucleation. Al-Cu and Al-Cr, vital …

A Gat-Bilstma Model For Weather-Aware Prediction Of Traffic Speed, Bikis Muhammed

Masters Theses

This thesis presented a method for incorporating the effect of weather conditions in the prediction of the average speed of vehicular traffic for each segment of a road network. The proposed approach utilized two different deep learning methods: graph attention networks and bidirectional long short-term memory with attention layers. The accuracy of predictions is increased by considering the real-world driving distance between road segments, in contrast to the Haversine distance used in several existing prediction methods. Categorization of input data as weekend or weekday further increased the prediction accuracy. The proposed approach was validated using two data sets published by …

Contextualizing Renewable Energy Adoption: An Examination Of The Role Of Community Choice Aggregation, Ankit Agarwal

Doctoral Dissertations

"The rapid expansion of renewable energy generation in the U.S., both through distributed and utility-scale facilities, is largely driven by top-down policy measures and the growing engagement of residential consumers on both individual and community levels. Previous studies on motives behind residential renewable energy adoption have examined procurement options in isolation and within a static context, primarily focused on intrinsic attributes like economic incentives, emission reductions, and peer popularity. This research introduces a novel context, assessing renewable procurement options in the presence of Community Choice Aggregation (CCA), a more prevalent and accessible alternative. This dissertation makes four pivotal contributions, offering …

Material Models For Simulation Of Steel Hot Rolling Process Using Experimentally Determined Properties At Elevated Temperatures And Strain Rates, Siva Sai Krishna Dasari

Doctoral Dissertations

"Hot rolling is one of the most important and complex process that includes large material deformation, different contact conditions, complex geometries and different temperature gradients along with micro structural changes such as viscoplasticity, dynamic recrystallization, and static softening. In the present work, the viscoplasticity, damage evolution, static softening and void closure of alloyed metal during hot rolling process was numerically investigated. Gleeble^TM hot compression and double hit tests were performed to provide experimental stress-strain curves at recrystallization temperatures and at different strain rates. Johnson-Cook viscoplastic model was calibrated using experimental stress-strain curves. Static softening model was developed at varying …

Why Equity Follows The Law, Adam J. Macleod

Faculty Articles

Renewed attention to equity in higher education is welcome because true equity helps us to reason together well. When administered correctly, the jurisprudence of equity models civil discourse and, therefore, can teach us how to carry out civic engagement reasonably. Equitable interpretation of the law teaches us how to understand each other charitably. And equity’s deference to law teaches us how to reason well together about our practical problems. Law is the practical reasoning that we do together. Equity serves the ends of justice by serving law, rather than undermining it. These functions of equity in adjudication point toward a …

Puerto Rican Presidential Voting Rights: Why Precedent Should Be Overturned, And Other Options For Suffrage, Sigrid Vendrell-Polanco

Faculty Articles

Part I of this article discusses the history and background of the United States' acquisition of Puerto Rico and how Puerto Rico became the commonwealth territory that it is today. The problematic history between the United States and Puerto Rico has been scrutinized in many works; however, this article provides a more recent overview of Puerto Rican contributions to the United States, both in terms of military service and monetary revenue. A current and accurate image of Puerto Rico and its entwinement with the United States is necessary to examine the depth of hypocrisy that its current legal status creates. …

Constitutional Interpretation And Zombie Provisions, Michael L. Smith

Faculty Articles

The United States Constitution and state constitutions contain numerous zombie provisions, including language restricting marriage to relationships between one man and one woman, voter literacy test requirements, disqualification of atheists from serving in office or testifying as witnesses, and pervasive gendered language restricting rights and offices to men alone. Though these provisions are unenforceable due to subsequent amendment, determinations of federal unconstitutionality, or preemption by federal laws, they live on in constitutional text.

This Article addresses the danger of these zombie provisions that has, thus far, been overlooked the prospect that zombie provisions may influence the interpretation of still-living constitutional …

Workaholic Syndrome: Law And Psychology Explore The Far Reach Of The Egg Shell Doctrine, Victoria C. Duke-Dawson

Faculty Articles

For an undertaking an analysis of the implication of stress in the workplace, this article requires a four-part approach. Specifically, Part II explores how workplace stress, commonly known as work-induced stress; coupled with trauma, adaptive responses, and latent psychological conditions trigger workaholic syndrome thereby creating a dysfunctional psychological and physical impairment to the body. This section also outlines how stress activates components in the brain to create what psychologists are now referring to as an injury to the brain. Part III of this article describes the evolution of the eggshell doctrine from inception to the most recent conception, which is …

Is The Women's Treaty A Paper Tiger? Indian Courts' Application Of The United Nations Treaty, Amanda L. Stephens

Faculty Articles

This Article examines whether the United Nations ("U.N.") Treaty, the Convention on the Elimination of All Forms of Discrimination Against Women ("CEDAW'), is a "paper tiger"-a law that seems powerful but is in fact weak and ineffectual. While some scholars question the Treaty's effectiveness based on statistical studies, others point to legal reforms in state parties as evidence of its success. Neither provides a nuanced middle ground by examining the CEDAW at a micro rather than a macro level. This Article fills this gap by conducting a qualitative analysis of 10 Indian judicial opinions. Specifically, the Article explores how the …

El Proceso De Nulidad Matrimonial En La Reforma Del Papa Francisco Con Especial Referencia Al Proceso Abreviado (Processus Brevior) (Book), Roberto Rosas, Yeshica Umaña

Faculty Articles

El matrimonio en la Iglesia es considerado como el mayor símbolo de la vida mística y ha sido instituido por Dios, el cual representa el sacramento de la unión esponsal de Cristo con la Iglesia. Múltiples cánones incluyen los requisitos y normas de la Iglesia para el matrimonio desde su institución como sacramento. La última reforma matrimonial fue introducida en el siglo XVIII por el Papa Benedicto XIV y se había mantenido como norma legal hasta que el Papa Francisco anunció la publicación de una nueva reforma para la nulidad de los matrimonios dentro de la Iglesia el 15 de …

Late Discovery: Student Experiences With Late Learning Disability Diagnoses, Margot Moffa

Brehm Scholars Research

My research focuses on the experiences of students who were diagnosed with a learning disability in high school or college. I conducted a qualitative study including eight interviews. Findings after the study showed that participants were never identified without seeking help independently. Additionally, living with an undiagnosed learning disability left negative impacts on participants' mental health, resulting in the development of coping strategies to mask their symptoms and experiences. This research is critical as getting diagnosed with a learning disability later in life can be detrimental to a student's learning experience. Struggling in school and not understanding is extremely frustrating …

Can Artificial Intelligence Create Research Hypotheses For Patellofemoral Instability?, Claire Parker, Sofia Hidalgo Perea, James Barsi

Introduction: The purpose of this study was to elucidate if artificial intelligence (AI) can generate novel research hypotheses regarding patellofemoral instability (PFI) in the pediatric population that have not previously been investigated. We hypothesized that AI would be able to generate new hypotheses that have not yet been presented or published.

Methods: In December of 2023, Chat Generative Pre-trained Transformer-3.5 (ChatGPT) was used to create a list of 25 research hypotheses about PFI in both the adult and pediatric population. The prompt used to generate the list of hypotheses was: “List 25 detailed and reproducible research ideas regarding …

‘Heavy’ Life Satisfaction: Unveiling The Intricate Relationships Between Obesity And Well-Being In Abu Dhabi, Masood Badri, Mugheer Alkhaili, Hamad Aldhaheri, Saad Yaqeib, Guang Yang, Muna Albahar, Asma Alrashdi

All Works

The study investigates the intricate relationship between obesity and well-being among residents in Abu Dhabi. Obesity is recognized as a significant public health concern worldwide, with potential implications for individuals' overall well-being. Understanding the complex associations between obesity and various aspects of well-being is essential for developing effective interventions to promote healthier lifestyles and improve overall quality of life. The research employs path analysis to explore the direct associations between obesity and multiple well-being indicators. Data is collected from residents in Abu Dhabi, focusing on subjective health, subjective mental health, life satisfaction, physical exercise, and satisfaction with social relationships. Path …

Digraph Enabled Digital Twin And Label-Encoding Machine Learning For Scada Network's Cyber Attack Analysis In Industry 5.0, Nabeel Al-Qirim, Anoud Bani-Hani, Munir Majdalawieh, Hussam Al Hamadi, Mohammad Kamrul Hasan

All Works

False-Data Injection Attack (FDIA), Remote-Tripping Command Injection (RTCI), and System Reconfiguration Attack (SRA) on SCADA (Supervisory Control and Data Acquisition) networks impact industry 5.0 enabled smart grid components such as intelligent-electronic-device (IED), circuit-breaker, network-switch, and power transmission lines. Since the SCADA-network-based cyber-attacking flow is not in digital-twin form, it is impossible to simulate the effects of the attack. Furthermore, the string nature of these affected components' data makes it challenging to incorporate into machine-learning-enabled intelligence (CTI) processes. To visualize the attacking flow of FDIA, RTCI, and SRA cyber-attacks on SCADA networks, this paper presents a novel "Digital Twin and Machine …

Moab Local Food Guide 2024, Roslynn Mccann, Shiree Duncan

All Current Publications

Thank you for picking up this Moab Utah Local Food Guide. Those growing and producing food within a 100 mile radius from Moab have been included in this guide to help YOU make locally sourced purchasing decisions!

ระบบบำรุงรักษาอัจฉริยะสำหรับการจัดการการดำเนินงานโรงแรม, ธนเศรษฐ์ โอชาญสิริ

Chulalongkorn University Theses and Dissertations (Chula ETD)

วิทยานิพนธ์ฉบับนี้มีวัตถุประสงค์เพื่อศึกษาแนวทางการสร้างระบบบำรุงรักษาสำหรับการจัดการการดำเนินงานโรงแรมในประเทศไทย ผ่านการศึกษาปัจจัยที่เกี่ยวข้อง ทดสอบต้นแบบ ประเมินการยอมรับจากผู้ใช้งาน และวิเคราะห์ความเป็นไปได้ทางการตลาด งานวิจัยนี้ใช้วิธีการวิจัยเชิงพัฒนาผ่านการวิเคราะห์ข้อมูลทุติยภูมิจากวรรณกรรมและข้อมูลปฐมภูมิจากการวิจัยเชิงคุณภาพและเชิงปริมาณ เริ่มต้นจากการสัมภาษณ์ผู้เชี่ยวชาญ 15 คน และเก็บข้อมูลจากแบบสอบถาม 455 ชุด ร่วมกับการวิเคราะห์สายคุณค่าและการหารากสาเหตุของปัญหา ปัจจัยสำคัญที่พบ ได้แก่ การออกแบบระบบ คุณลักษณะของใบสั่งงาน การจัดสรรงาน การวางแผนงาน คุณภาพบุคลากร และความพร้อมของเครื่องมือ ส่วนตัวชี้วัดประสิทธิภาพ ได้แก่ ระยะเวลา ต้นทุน การจัดการข้อมูล และคุณภาพบริการ ข้อมูลที่ได้ถูกนำมาพัฒนาต้นแบบระบบบำรุงรักษา โดยใช้หลักการหาค่าที่เหมาะสมที่สุดแบบหลายวัตถุประสงค์และการเรียนรู้ด้วยเครื่อง เพื่อช่วยจัดกลุ่มข้อมูลให้สอดคล้องกับบริบทของโรงแรม จากนั้นนำไปทดสอบในโรงแรมต้นแบบ 5 แห่ง และปรับปรุงตามคำแนะนำของผู้ใช้งาน 15 คน เมื่อทดลองใช้งานจริง ผู้ใช้งาน 36 คนให้การยอมรับระบบสูงถึงร้อยละ 94.44 การศึกษาความเป็นไปได้ในเชิงพาณิชย์แสดงให้เห็นว่าระบบมีศักยภาพในตลาด โดยมีระยะเวลาคืนทุนประมาณ 2 ปี 1 เดือน

Visualsphere: A Web-Based Interactive Visualization System For Clinical Research Data, Shiwei Lin, Shiqiang Tao, Wei-Chun Chou, Guo-Qiang Zhang, Xiaojin Li

Faculty, Staff and Student Publications

Clinical research data visualization is integral to making sense of biomedical research and healthcare data. The complexity and diversity of data, along with the need for solid programming skills, can hinder advances in clinical research data visualization. To overcome these challenges, we introduce VisualSphere, a web-based interactive visualization system that directly interfaces with clinical research data repositories, streamlining and simplifying the visualization workflow. VisualSphere is founded on three primary component modules: Connection, Configuration, and Visualization. An end-user can set up connections to the data repositories, create charts by selecting the desired tables and variables, and render visualization dashboards generated by …

Xuebijing Improves Intestinal Microcirculation Dysfunction In Septic Rats By Regulating The Vegf-A/Pi3k/Akt Signaling Pathway, A-Ling Tang, Yan Li, Li-Chao Sun, Xiao-Yu Liu, Nan Gao, Sheng-Tao Yan, Guo-Qiang Zhang

Faculty, Staff and Student Publications

BACKGROUND: This study aims to explore whether Xuebijing (XBJ) can improve intestinal microcirculation dysfunction in sepsis and its mechanism.

METHODS: A rat model of sepsis was established by cecal ligation and puncture (CLP). A total of 30 male SD rats were divided into four groups: sham group, CLP group, XBJ + axitinib group, and XBJ group. XBJ was intraperitoneally injected 2 h before CLP. Hemodynamic data (blood pressure and heart rate) were recorded. The intestinal microcirculation data of the rats were analyzed via microcirculation imaging. Enzyme-linked immunosorbent assay (ELISA) kits were used to detect the serum levels of interleukin-6 (IL-6), …

Statins Are Rarely Prescribed For Incidentally Discovered Covert Cerebrovascular Disease: A Retrospective Cohort In A Large Electronic Health Record (Ehr) Identified Using Natural Language Processing, Lester Y Leung, Eric Puttock, David F Kallmes, Patrick Luetmer, Sunyang Fu, Chengyi X Zheng, Hongfang Liu, Wansu Chen, David M Kent

Faculty, Staff and Student Publications

Introduction: While incidentally discovered covert cerebrovascular diseases (id-CCD) are associated with future stroke, it is not known if patients with id-CCD are prescribed statins.

Methods: Patients age ≥50 with id-CCD on neuroimaging from 2009 to 2019 with no prior ischaemic stroke, transient ischaemic attack or dementia were identified using natural language processing in a large real-world cohort. Robust Poisson multivariable regression was used to assess statin prescription among patients without prior statins.

Results: Among 2 41 050 patients, 74 975 patients (31.1%; 4.7% with covert brain infarcts (CBI); 29.0% with white matter disease (WMD)) had id-CCD. 53.5% (95% CI 53.2 …

The Enact Network Is Acting On Housing Instability And The Unhoused Using The Open Health Natural Language Processing Toolkit, Daniel R Harris, Sunyang Fu, Andrew Wen, Alexandria Corbeau, Darren Henderson, Jordan Hilsman, David Oniani, Yanshan Wang

Faculty, Staff and Student Publications

Housing is an environmental social determinant of health that is linked to mortality and clinical outcomes. We developed a lexicon of housing-related concepts and rule-based natural language processing methods for identifying these housing-related concepts within clinical text. We piloted our methods on several test cohorts: a synthetic cohort generated by ChatGPT for initial infrastructure testing, a cohort with substance use disorders (SUD), and a cohort diagnosed with problems related to housing and economic circumstances (HEC). Our methods successfully identified housing concepts in our ChatGPT notes (recall = 1.0, precision = 1.0), our SUD population (recall = 0.9798, precision = 0.9898), …

Three Essays On Digital Health: Online Communication, Health Information Seeking, Complementary Medicine Use Among Older Adults And Vulnerable Populations, Daria Turavinina

Chulalongkorn University Theses and Dissertations (Chula ETD)

Through three empirical essays, this work explored how information and communication technology (ICT) use shapes population health behaviors and outcomes, with a particular focus on older adults. The first essay critically investigated whether online communication can serve as a substitute for in-person social contact in mitigating loneliness among late middle-aged and older persons. The study finds that while excessive reliance on digital interaction correlated with higher loneliness in the general older adult population, it could potentially serve a protective function for those in poor health by reducing social isolation. The second essay investigated how online health information seeking behavior and …

Participatory Training On Health Literacy To Improve Body Composition Among Female Overweight And Obese-High School Students, Phatthalung Province, Thailand : A Quasi Experimental Study, Chamaiporn Thongphet

Chulalongkorn University Theses and Dissertations (Chula ETD)

Children and adolescents aged 5-19 over 340 million were overweight and obese, the prevalence has risen dramatically. Overweight and obesity are linked to more deaths worldwide than underweight. Using health literacy-focused strategies, the intervention was robust in achieving reductions for participants of varying health literacy status. This study aimed to evaluate the effect of “Participatory Training Health Literacy” on reducing risk behavior and improving body composition among the female overweight and obese high school students, Phatthalung province, Thailand. The study design was 2 designs including cross-sectional study (n=572) design and quasi- experimental research (intervention=36 and control=31). The assessment had conducted …

Assessment Of Dietary Protein Intake Pattern And Perception Of Egg White Noodle Consumption Among Pre-Aging Population, Apisara Limpraphuwiwattana

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study aimed to examine protein consumption behaviors and the factors influencing protein intake among the pre-aging population, with a focus on egg white protein and the acceptance of egg white protein noodles. The study employed the Health Belief Model as a theoretical framework to explore health beliefs regarding protein consumption and its association with sarcopenia among pre-aging adults (45-59 years) in Bangkok, Thailand. A cross-sectional survey was conducted with 305 participants, using questionnaires to assess protein consumption patterns. In addition, sensory perception of egg white noodles was evaluated by 60 participants, and 40 participants were included to assess their …

Influence Of Postural Balance, Fear Of Falling, And Falls Risk Awareness On Quality Of Life In Hypertensive And Normotensive Old Aged Females, Rikza Naseer

Chulalongkorn University Theses and Dissertations (Chula ETD)

Background: Older adult falls are a severe concern in terms of public health worldwide, with many assessment tools predominantly in English, pointing to the need to perform cross-cultural adaptation and validation to use the different instruments in various cultures. The purpose of this study was to translate the Urdu version of the Falls Risk Awareness Questionnaire for eldercare and established its reliability and validity. Moreover, this cross-sectional study also investigated the correlation of anthropometric measurements, postural balance, fear of falls, and falls risk awareness with quality of life of hypertensive older female patients attending Hospitals of Lahore, Pakistan. Methods: Two …