Digital Commons Network^™

Design Considerations For Self-Deploying Origami-Inspired Space Arrays, Kathryn Faith Varela

Theses and Dissertations

Origami engineering involves many steps, including selecting a pattern, accommodating for thickness, and choosing stabilization, damping, and deployment methods, the last of which is particularly important if the array is intended to self-deploy. Through metrics and case studies, this research strives to aid designers in creating origami-inspired deployable arrays. The approaches vary as each chapter focuses on a different aspect of origami engineering. By introducing a thickness accommodation technique and reducing complications with rigid-foldability (when applicable), this work shows how the geometrical structure can be modified to help the array stow and deploy. By providing quantitative and qualitative metrics for …

The Frequency And Predictive Factors Of Change In Alcohol Consumption During The Covid-19 Pandemic: Results From A Multi-Country Longitudinal Study, Carolien Verhei, Nadja Alexandrov, Erica I. Lubetkin, Gouke J. Bonsel, John N. Yfantopoulos, Mathieu F. Janssen, Stephanie C.E. Schuit, Suzanne Polinder, Pleunie P.M. Rood, Juanita A. Haagsma

Publications and Research

Background: The COVID-19 pandemic has had multiple health and behavioral effects in the general population worldwide, including effects on nutritional and lifestyle behavior such as alcohol consumption. This study aimed to determine the frequency of and predictors for change in alcohol consumption two years after onset of the COVID-19 pandemic among participants from the general population of six countries. Methods: Longitudinal study design with 4999 participants (47% male; aged 18–75 years) from a general population cohort from six countries: Greece, Italy, the Netherlands, Sweden, the United Kingdom (UK) and the United States of America (US). Measurements: Three web-based surveys at …

Learning Nonlinear Dynamics In Synchronization Of Knowledge-Based Leader-Following Networks, Shimin Wang, Xiangyu Meng, Hongwei Zhang, Frank L. Lewis

Faculty Publications

Knowledge-based leader-following synchronization of heterogeneous nonlinear multi-agent systems is a challenging problem since the leader's dynamic information is unknown to any follower node. This paper proposes a learning-based fully distributed observer for a class of nonlinear leader systems, which can simultaneously learn the leader's dynamics and states. This class of leader dynamics is rather general and does not require a bounded Jacobian matrix. Based on this learning-based distributed observer, we further synthesize an adaptive distributed control law for solving the leader-following synchronization problem of multiple Euler–Lagrange systems subject to an uncertain nonlinear leader system. The results are illustrated by a …

Assessing Feeling States And Enjoyment Of Various Exercise Activities, Kaitlyn Wusk

Theses/Capstones/Creative Projects

To maintain physical health, the American College of Sports Medicine (2022) recommends general exercise guidelines for healthy adults. A lack of adherence to these recommendations may be attributable in part to feeling states and enjoyment while exercising. The study utilized surveys to evaluate feeling states and enjoyment of various exercise activities to determine which type of group exercise most successfully induces changes in feeling states and if a positive correlation exists between feeling state changes and enjoyment. Students enrolled in the Fitness for Living course at the University of Nebraska at Omaha (UNO) were surveyed before and after eleven distinct …

Storm Surge Modeling In The Ai Era: Using Lstm-Based Machine Learning For Enhancing Forecasting Accuracy, Stefanos Giaremis, Noujoud Nader, Clint Dawson, Carola Kaiser, Efstratios Nikidis, Hartmut Kaiser

Faculty Publications

Physics simulation results of natural processes usually do not fully capture the real world. This is caused for instance by limits in what physical processes are simulated and to what accuracy. In this work we propose and analyze the use of an LSTM-based deep learning network machine learning (ML) architecture for capturing and predicting the behavior of the systemic error for storm tide forecast models with respect to real-world water elevation observations from gauge stations during hurricane events. The overall goal of this work is to predict the systemic error of the physics model and use it to improve the …

Exploring The Relationship Of The Noncognitive Variables Of Grit And Mindset In Baccalaureate Nursing Students And Their Impact On Academic Success, Alecia Hollis

Dissertations

The study aimed to evaluate how the noncognitive variables of grit and mindset could impact the academic success of baccalaureate nursing students. With the present and growing shortage of nurses, attrition within nursing programs is cause for concern. Attrition is a multifaceted problem; however, academic failure is one contributing factor. While cognitive factors, such as the standardized aptitude test (SAT), pre-nursing science GPA, pre-nursing GPA, and standardized entrance exams (Al-Alawi et al., 2020; Chisholm-Burns et al., 2021), have traditionally been used for admission criteria, increasing evidence suggests that noncognitive factors, like grit and mindset, play a crucial role in academic …

Lessons Learned Over A Growing Development Cycle In Medical Simulation, Alex Pacheco-San Martin

Master of Fine Arts in Digital Media Culminating Experience

For the last five years, East Tennessee State University’s Department of Digital Media has partnered with the East Tennessee Children’s Hospital in downtown Knoxville to create a collection of training modules for their nursing staff. Dozens of students have devoted thousands of hours both inside and outside of the department’s various production courses to build the eleven modules currently in use today. However, development has not been without its hurdles, particularly in moving from one project to the next. Poor documentation and miscommunications compounded with faults in the projects’ design philosophies to repeatedly delay production. While each deliverable was playable …

Introduction: Urban Historical Archaeology Of And As Dissonance—An Invitation For Collaboration, Kelly Britt

Publications and Research

No abstract provided.

Policing, Power, And Protests: Landscapes Of Surveillance In Private And Public Spaces In Lower Manhattan, Kelly Britt

Publications and Research

No abstract provided.

Overdue For Change: Toxic Behavior In Academic Libraries, Molly Ledermann

LOEX Quarterly

No abstract provided.

Improvement Cycles In The Wake Of A Crisis: A School Leadership Team’S Approach To The Unknown, Andrew S. Brandt

All Dissertations

Organizational leaders frequently face challenges when navigating crises or unexpected problems. In such situations, leaders often rely on unbending emergency plans that lack the necessary flexibility, learning opportunities, and effective communication strategies to address the complexities of a crisis. This failure can result in repeated adverse outcomes the next time a crisis surfaces. This qualitative case study examined one high school leadership team’s use of PDSA cycles and the improvement science framework to respond to the COVID-19 crisis and emerging problems. Principles of the improvement science framework and chaos theory were applied to the collection and analysis of data. The …

Elucidating The Roles Of Septin Proteins In Thermotolerance And Cell Wall Integrity In Cryptococcus Neoformans, Stephani S. Martinez Barrera

All Dissertations

Cryptococcus neoformans is a globally distributed fungal pathogen responsible for causing cryptococcal meningitis in immunocompromised individuals. This pathogenic yeast must adapt to changes in temperature upon entering the human host. Septin proteins are conserved filament-forming GTPases that assemble as higher-order complexes at the cell cortex to support cytokinesis and morphogenesis in fungal and animal cells. In C. neoformans, four septin homologs (Cdc3, Cdc10, Cdc11, and Cdc12) assemble at the mother-bud neck, contributing to cytokinesis through poorly understood mechanisms. C. neoformans strains lacking the septins Cdc3 or Cdc12 are viable at 25°C, but fail to proliferate at 37°C, and are …

First-Order Algorithms For Convex Smooth Optimization Problems With Homogeneous Linear Constraints, Yidan Guo

All Dissertations

The purpose of this dissertation is to explore the first-order methods that can be used to solve an approximate solution for convex smooth problems with homogeneous linear constraints. It consists of three interconnected research projects.

In the first project, we study the problem of computing the projection of a given vector onto the kernel of a symmetric positive semi-definite matrix. The complexity of an algorithm for computing a numerical solution is evaluated by the total number of matrix-vector multiplications required for computing an approximate solution. Such problems arise commonly in consensus optimization, in which the total number of matrix-vector multiplications …

Scalable Solution Of Time-Dependent Pdes Through Component-Wise Exponential Integrator, Chelsea Drum

Dissertations

Exponential integrators, such as exponential Runge-Kutta or Rosenbrock methods, are designed specifically for the time integration of stiff systems of ordinary differential equations (ODEs) and allow the use of larger time steps than other general-purpose ODE solvers. However, these methods rely on computing matrix function-vector products that are traditionally computed using a Krylov projection, such as Lanczos or Arnoldi iteration, that involves substantial computational expense at high spatial resolution. Krylov Subspace Spectral (KSS) methods' frequency-dependent approach, designed to circumvent stiffness in linear problems, computes these products with greater scalability. We propose the combination of such KSS methods with exponential integrators …

General Psychology 2e, Will Stutterheim

All Open Educational Resources

General Psychology 2e offers an insightful exploration into the complexities of the field of psychology and all that it has to offer. This book provides a thorough introduction to the foundational principles of psychology, covering essential theories, research findings, and applications that illustrate the intricate workings of the mind.

The text begins with a historical overview of psychology, tracing its evolution from philosophical roots to its establishment as a scientific discipline. It then delves into essential topics regarding stress and mental health disorders and concludes with therapy and treatment approaches. It then covers research in psychology, biopsychology, consciousness, and perception. …

Psy 300 Abnormal Psychology, Stephanie Weigel, Jorden A. Cummings, Bill Pelz

All Open Educational Resources

This book is a compilation of Open Education Resources for the use in an undergraduate level abnormal psychology course at Fort Hays State University.

Student Handbook 2024-2025, Saint Mary's College Of California

Student Handbook

No abstract provided.

Modeling, Simulation, And Experimental Testing Of A Single-Legged Hopper, John Anthony Bennett

Master's Theses

Legged robots are well-suited for navigating unstructured terrain due to their ability to perform agile dynamic motions. Building on the efforts of Cal Poly's Legged Robotics Group, this project focuses on achieving stable forward hopping with a single legged robot.

A comprehensive model of leg hopping is formulated, with leg dynamics during flight and stance phases derived using Euler-Lagrange equations. During the stance phase, a spring-mass system models the leg-ground interaction. The touchdown and lift-off conditions are formulated mathematically, and state mappings between phases are determined via momentum conservation. A two-phase hybrid controller is designed, incorporating trajectory planning during flight …

Two Professors Receive $4 Million To Improve Wound Healing And Tissue Generation, Brooks Payette

UNH Today Archive

No abstract provided.

Supported Decision Making: A Rapid Scoping Review Of Literature On Best Practices, Sheila Wildeman, Caraid Mcginty

Research Papers, Working Papers, Conference Papers

The purpose of this rapid scoping review is to identify principles and best (or “good” ) practices from an emerging academic literature on operationalizing supported decision making. It was produced as part of a suite of materials created by the IIDEAS Network -- an Inclusive, Interdisciplinary Decision-making Empowerment, Advocacy and Support Network composed of interdisciplinary academics working in disability studies, education, law, sociology, health/medicine and theatre, and others engaged in related community-based education, art/drama and advocacy, including two lived experience experts labeled/with intellectual disabilities

The Guardian The Month Of August 2024, Wright State Student Body

The Guardian Student Newspaper

News articles from The Guardian for the Month of August 2024. The Guardian is the official student-run newspaper for Wright State University. It has been published regularly since March of 1965.

The Impact Of Lutein-Loaded Poly(Lactic-Coglycolic Acid) Nanoparticles Following Topical Application: An In Vitro And In Vivo Study, Renee T. Carter, Sean Swetledge, Sara Navarro, Chin C. Liu, Nikole Ineck, Andrew C. Lewin, Fabrizio Donnarumma, Ede Bodoki, Rhett W. Stout, Carlos Astete, Jangwook P. Jung, Cristina M. Sabliov

Faculty Publications

Antioxidant therapies are of interest in the prevention and management of ocular disorders such as cataracts. Although an active area of interest, topical therapy with antioxidants for the treatment of cataracts is complicated by multiple ocular anatomical barriers, product stability, and solubility. Entrapment and delivery of antioxidants with poly(lactic-co-glycolic acid) nanoparticles is a possible solution to these challenges, however, little is known regarding their effects in vitro or in vivo. Our first aim was to investigate the impact of blank and lutein loaded PLGA nanoparticles on viability and development of reactive oxygen species in lens epithelial cells in vitro. Photo-oxidative …

Strengthening Education Systems Through Development Of Champion Teacher: The Experience Of Implementation Of The F4l Project In East Africa, Jane Rarieya, Fortidas Bakuza, Nyagwegwe Wango

Institute for Educational Development, East Africa

Current trends in education are shaping school culture, whereby teaching and learning processes are being challenged to adjust from practices that have been taken for granted. Teachers who are the engine of teaching and learning are expected to be at the forefront of finding solutions to teaching and learning processes. Teachers’ education colleges are responsible for preparing pre-service teachers with new skills that will allow them to succeed professionally upon graduation. Tutors in teacher colleges are also expected to continue to support in-service teachers through teacher professional development. The success of these processes calls for tutors whose teaching practices are …

Unlocking Icu Barriers: Investigating The Challenges Of Early Progressive Mobility, Leslie S. Bigler

Doctoral Projects

Approximately 800,000 patients in the United States annually are admitted to the Intensive Care Unit (ICU) due to critical illnesses and prolonged immobility contributes to poor patient outcomes. While existing data demonstrates early and progressive mobility helps improve outcomes, adherence remains inconsistent for a variety of reasons such as safety concerns, staffing, and lack of knowledge and confidence of mobilization techniques. This quality improvement project, conducted in a 20-bed Medical Intensive Care Unit, asked staff to identify barriers to adherence to mobility protocols. Nurse managers and clinical educators play a crucial role in addressing these issues using strategies such as …

Magnetic Resonance Imaging Of The Breast: Could It Be Used As A Screening Test?, Deema A. Nagadi, Naglaa M. Elsayed

Saudi Medical Journal

Objectives: To investigate whether magnetic resonance imaging (MRI) best detects early malignancy in high-risk women. Methods: A retrospective, cross-sectional study, carried out at King Abdulaziz University Hospital, Jeddah, Saudi Arabia, included 419 female breast cancer patients aged 16-84 years (mean age of 49). Data were collected from the radiological department’s database to compare the MRI, ultrasound (US), and mammography results, with or without tissue biopsy. Results: In diagnosing benign versus malignant lesions, MRI showed significant agreement with tissue biopsy, with high sensitivity (70%) and specificity (87%); its positive predictive value (PPV) was 92% and negative predictive value (NPV) was 56%. …

On-Site Provision Of Family Planning Services In Factory Settings In Egypt, Nahla G. Abdel-Tawab, Reham Abou El-Fadl, Noha El-Khorazaty, Tarek Alam El Din

Sexual and Reproductive Health, Rights, and Choices

Between February 2023 and May 2024, the Population Council, in partnership with the Egyptian Chamber of Apparel and Home Textile Industries (ECAHT) and with support from the Ministry of Health and Population (MOHP) and the Embassy of the Kingdom of the Netherlands in Cairo, assessed the acceptability, effectiveness and cost of an intervention that combines raising awareness of family planning/reproductive health with on-site provision of family planning services. The intervention, known as the “Our Health is Our Capital” project, was implemented in 10 garment factories in El Amereya Free Investment Zone. Results showed that this model of public–private partnership is …

Representation Progression In Children's Literature, Meili Caldwell

Kentucky English Bulletin

No abstract provided.

A Recreational Therapy-Based Bibliotherapy Program For Perceived Stress And Coping Among Siblings Of Individuals With Intellectual And Developmental Disabilities, Lindsey Kirschbaum

All Dissertations

Siblings of individuals with intellectual and developmental disabilities (IDD) face unique challenges and experiences different from their peers who do not have a sibling with IDD. These challenges can include increased sense of responsibility at home, decreased attention from parents, and feelings of social isolation; all of which can increase stress. While sibling support groups offer opportunities for siblings of individuals with IDD to connect with other siblings, these groups do not formally focus on improving participants’ stress-coping outcomes. Bibliotherapy has been shown to help youth express stress-related feelings and learn stress-coping strategies. However, no known research has assessed the …

Single Charge Carrier Dynamics In A Single Polymer Chain, Ming Lei

All Dissertations

Understanding how charge carrier move through conjugated polymers is crucial for optimizing the functionality and efficiency of various applications, from organic solar cells and light-emitting diodes (LEDs) to field-effect transistors. Previous studies have demonstrated that tracking the fluorescence centroid displacement provides a method to determine the position of single charge carriers in a conjugated polymer nanoparticle. This method allows the observation of charge carrier trajectories over time and allow researchers to obtain insights into the dynamic processes. In addition, a detailed map of the energy landscape can be constructed by analyzing the fluorescence spectrum. These techniques were previously applied to …

Investigating The Adaptive Potential Of Leaf Variegation In Two Dimorphic Hexastylis Species, Cierra N. Sullivan

All Dissertations

Variegated leaves with disjointed, patterned coloration of the leaf blade are often hypothesized to have decreased photosynthetic capacity in comparison to uniformly colored leaves. Yet, many forest understory plants in tropical, subtropical, and temperate climates possess leaf variegation. Moreover, mixed findings from previous research on the physiological impacts of leaf variegation suggest variegation is adaptative under certain environmental conditions despite decreased photosynthetic tissue area. I take an eco-physiological approach to investigate agents of selection maintaining a leaf variegation polymorphism in Hexastylis, which has both quantitative and qualitative variation in variegation. First, I conduct field surveys of morph frequencies, quantitative …