Digital Commons Network^™

Robust Adaptive Fractional-Order Pid Controller Design For High-Power Dc-Dc Dual Active Bridge Converter Enhanced Using Multi-Agent Deep Deterministic Policy Gradient Algorithm For Electric Vehicles, Seyyed Morteza Ghamari, Daryoush Habibi, Asma Aziz

Research outputs 2022 to 2026

The Dual Active Bridge converter (DABC), known for its bidirectional power transfer capability and high efficiency, plays a crucial role in various applications, particularly in electric vehicles (EVs), where it facilitates energy storage, battery charging, and grid integration. The Dual Active Bridge Converter (DABC), when paired with a high-performance CLLC filter, is well-regarded for its ability to transfer power bidirectionally with high efficiency, making it valuable across a range of energy applications. While these features make the DABC highly efficient, they also complicate controller design due to nonlinear behavior, fast switching, and sensitivity to component variations. We have used a …

The Association Of Body Composition And Musculoskeletal Characteristics With Police Recruit Performance: A Cross-Sectional Study, Vanessa R. Sutton, Myles C. Murphy, Callum J. Mccaskie, Paola T. Chivers, Nicolas H. Hart, Jodie L. Cochrane Wilkie, Garth Allen, Jack Dalla Via

Research outputs 2022 to 2026

Objective: Exploring how body composition and musculoskeletal characteristics relate to physical performance may provide insights for optimising training outcomes. We explored if body composition and musculoskeletal characteristics were associated with tactical and cardiorespiratory performance.

Methods: A cross-sectional study of police recruits within the Western Australia Police Force was performed. Total and regional body composition was assessed using Dual-energy X-ray Absorptiometry, with the tibial morphology and mid-thigh muscle cross-sectional area assessed using peripheral Quantitative Computed Tomography. Tactical performance was measured with a Physical Performance Evaluation, and cardiorespiratory fitness assessed using the Beep Test. Variables that were significant in univariate regressions progressed …

The Specialist Dementia Care Program In Australia: Evidence To Date On A Home-Like Model Of Care For People With Very Severe Behaviours And Psychological Symptoms Of Dementia, Mustafa Atee, Srivalli Vilapakkam Nagarajan, Rebecca Lloyd, Stephen Macfarlane, Angela Raguz, Thomas Morris

Research outputs 2022 to 2026

Objectives: Behaviours and psychological symptoms of dementia (BPSD) have a serious impact on care and health outcomes, such as inappropriate pharmacotherapy and impaired quality of life. These symptoms are common across care settings but are more prevalent in residential aged care homes (RACHs). BPSD such as aggression and psychosis may pose a high risk of harm to residents, co-residents, caregivers and families, and the severe forms of these BPSD are linked to RACH premature admission. When people with very severe BPSD in Australia cannot be cared for in mainstream RACHs, the Specialist Dementia Care Program (SDCP) is offered. This article …

Vitamin K: Metabolism, Genetic Influences, And Chronic Disease Outcomes, Montana Dupuy, Nicola P. Bondonno, Pratik Pokharel, Allan Linneberg, Itamar Levinger, Carl Schultz, Jonathan M. Hodgson, Marc Sim

Research outputs 2022 to 2026

Vitamin K refers to a group of lipid-soluble vitamins that exist in two natural isoforms; phylloquinone (PK, vitamin K1) and menaquinones (MKs, vitamin K2). Phylloquinone, the primary dietary source, is found abundantly in green vegetables and plant oils. Menaquinones (MK-4 through MK-13) are synthesized by anaerobic bacteria and may be obtained through the diet from fermented foods and animal products (e.g., meats, dairy and eggs). Originally recognized for its role in blood coagulation, vitamin K is an essential cofactor for the posttranslational carboxylation of vitamin K-dependent proteins (VKDPs), which are implicated in various physiological processes including; blood coagulation, calcium homeostasis, …

Longitudinal Associations Between Self-Reported Exercise Levels And Cognition In Adad, Kelsey R. Sewell, James D. Doecke, Ralph N. Martins, Stephanie R. Rainey-Smith, Jeremiah Peiffer, Samantha L. Gardener, Hamid R. Sohrabi, Kirk I. Erickson, Belinda M. Brown

Research outputs 2022 to 2026

Introduction: This study examined longitudinal associations between self-reported exercise and cognition, with moderation by sex, in individuals with autosomal dominant Alzheimer's disease (ADAD) mutations. We also examined whether changes in exercise over time differed in ADAD mutation carriers versus non-carriers in the years preceding first cognitive symptom onset. Methods: Participants (n = 491) were ADAD mutation carriers (63%) and non-carriers (37%) from the Dominantly Inherited Alzheimer Network aged 37.6 ± 11.1 years. Participants reported their average time partaking in various leisure-time exercise activities over the past 12 months. Results: Greater baseline exercise predicted better longitudinal cognitive performance. Sex did not …

Multifunctional Prospects Of Physical Vapor-Deposited Silver-Based Metal-Dielectric Nanocomposite Thin Films, Mohammad Nur-E-Alam, Boon Kar Yap, Mohammad Khairul Basher, Mohammad Aminul Islam, M. Khalid Hossain, Manzoore Elahi M. Soudagar, Narottam Das, Mikhail Vasiliev, Tiong Sieh Kiong

Research outputs 2022 to 2026

Silver-based metallic thin-film nanostructured materials are extensively utilized in advanced technological applications, including sensors, energy-efficient coatings, antibacterial coatings, and optical filters. Physical vapor deposition has emerged as a significant technique for synthesizing silver (Ag)-based nanocomposites, enabling the modification of structural and optical properties of thin metallic films. This advancement facilitates material development and applications in electronics, catalysis, magnetics, optics, environmental and health sectors, and specialized optical coatings. Research has demonstrated the successful integration of various nanomaterials with Ag matrices, resulting in multifunctional thin-film systems. Ag-based nanocomposite thin films exhibit exceptional electrical conductivity, rendering them suitable for electronic and optoelectronic devices. …

Satellite And Eddy Covariance Analysis Reveals Short-Lived Evapotranspiration Changes After Fire In Mediterranean Woodland, Hoang Long Nguyen, Simone Gelsinari, J. Nik Callow, Richard Silberstein, Sally E. Thompson

Research outputs 2022 to 2026

Ecosystem evapotranspiration (ET) varies through space and time in response to environmental gradients and disturbances like fire. Field-based techniques (e.g. eddy covariance) can directly measure how ET responds to fire; however, these measurements are localised and only represent small areas. Remotely sensed ET products can potentially evaluate fire impacts on ecosystem ET, but their performance for this task remains largely unassessed. This paper uses three widely available remote sensing products: the CSIRO MODIS ReScaled ET (CMRSET), MODIS ET (MOD16), and Penman–Monteith–Leuning (PML), to assess ET changes caused by a fuel reduction burn in a Mediterranean woodland in comparison to the …

Linking Symptom Inventories Using Semantic Textual Similarity, Kelly S Peterson, Kristen Dams O'Connor, Ronak Agarwal, Houshang H Amiri, Raeda K Andersen, Talin Babikian, David A Baron, Erin D Bigler, Karen Caeyenberghs, Lisa Delano-Wood, Seth G Disner, Ekaterina Dobryakova, Blessen C Eapen, Rachel M Edelstein, Carrie Esopenko, Helen M Genova, Elbert Geuze, Naomi J Goodrich-Hunsaker, Jordan Grafman, Asta K Håberg, Cooper B Hodges, Kristen R Hoskinson, Elizabeth S Hovenden, Andrei Irimia, Neda Jahanshad, Ruchira M Jha, Finian Keleher, Kimbra Kenney, Inga K Koerte, Spencer W Liebel, Abigail Livny, Marianne Løvstad, Sarah L Martindale, Jeffrey E Max, Andrew R Mayer, Timothy B Meier, Deleene S Menefee, Abdalla Z Mohamed, Stefania Mondello, Martin M Monti, Rajendra A Morey, Virginia Newcombe, Mary R Newsome, Alexander Olsen, Nicholas J Pastorek, Mary Jo Pugh, Adeel Razi, Jacob E Resch, Jared A Rowland, Kelly Russell, Nicholas P Ryan, Randall S Scheibel, Adam T Schmidt, Gershon Spitz, Jaclyn A Stephens, Assaf Tal, Leah D Talbert, Maria Carmela Tartaglia, Brian A Taylor, Sophia I Thomopoulos, Maya Troyanskaya, Eve M Valera, Harm Jan Van Der Horn, John D Van Horn, Ragini Verma, Benjamin S C Wade, Willian C Walker, Ashley L Ware, J Kent Werner, Keith Owen Yeates, Ross D Zafonte, Michael M Zeineh, Brandon Zielinski, Paul M Thompson, Frank G Hillary, David F Tate, Elisabeth A Wilde, Emily L Dennis

Faculty, Staff and Students Publications

An extensive library of symptom inventories has been developed over time to measure clinical symptoms of traumatic brain injury (TBI), but this variety has led to several long-standing issues. Most notably, results drawn from different settings and studies are not comparable. This creates a fundamental problem in TBI diagnostics and outcome prediction, namely that it is not possible to equate results drawn from distinct tools and symptom inventories. Here, we present an approach using semantic textual similarity (STS) to link symptoms and scores across previously incongruous symptom inventories by ranking item text similarities according to their conceptual likeness. We tested …

Managing Hypercholesterolemia In Adults Older Than 75 Years Without A History Of Atherosclerotic Cardiovascular Disease: An Expert Clinical Consensus From The National Lipid Association And The American Geriatrics Society, Daniel E Forman, Ariel R Green, Terry A Jacobson, Ariela R Orkaby, Joseph J Saseen, Salim S Virani

Faculty, Staff and Students Publications

The risk of atherosclerotic cardiovascular disease increases with advancing age. Elevated LDL-cholesterol and non-HDL-cholesterol levels remain predictive of incident atherosclerotic cardiovascular events among individuals older than 75 years. Risk prediction among older individuals is less certain because most current risk calculators lack specificity in those older than 75 years and do not adjust for co-morbidities, functional status, frailty, and cognition which significantly impact prognosis in this age group. Data on the benefits and risks of lowering LDL-cholesterol with statins in older patients without atherosclerotic cardiovascular disease are also limited since most primary prevention trials have included mostly younger patients. Available …

Dietary Interventions To Support And Improve Sleep Disturbances And Insomnia Disorder In Menopause: From Bench To Bedside, Emily J Arentson-Lantz, Greg J Elder

Faculty, Staff and Students Publications

Sleep is essential for maintaining physical and psychological health, and also cognitive health (referred to as 'brain health'). However, the transition to menopause has a direct impact upon sleep. Sleep disturbances are reported by approximately 40%-60% of menopausal women, and insomnia disorder is also prevalent. Diet-based interventions could potentially be used to improve subjective sleep quality in this population, and although there are several promising interventions which have been used in other groups that could be trialled, the evidence base is currently lacking. One particularly promising area for future research is that these interventions might be used alongside, or instead …

Baseline Characteristics Of The Us Study To Protect Brain Health Through Lifestyle Intervention To Reduce Risk (Us Pointer): Successful Enrollment Of A Diverse Clinical Trial Cohort At Risk For Cognitive Decline, Heather M Snyder, Maryjo L Cleveland, Darren R Gitelman, Miia Kivipelto, Xiaoyan I Leng, Laura Lovato, Kathryn V Papp, Valory N Pavlik, Stephen P Salloway, Christy C Tangney, Sarah Tomaszewski Farias, Jeff D Williamson, Sharon Wilmoth, Nancy Woolard, Melissa Yu, Mark Andrew Espeland, U.S. Pointer Study Group

Faculty, Staff and Students Publications

Introduction: The U.S. Study to Protect Brain Health Through Lifestyle Intervention to Reduce Risk (U.S. POINTER) is a 2-year randomized controlled trial of two lifestyle interventions in 2111 older adults at increased risk for cognitive decline.

Methods: Sociodemographic and clinical characteristics and rates of ancillary study participation were described with means and frequencies.

Results: U.S. POINTER successfully enrolled a cohort, ages 60-79 years, which was ethno-racially inclusive (>30% individuals from groups often under-represented in clinical trials with cognitive outcomes) and 18% residing in neighborhoods with moderate or high levels of socioeconomic deprivation. Enrollees were cognitively intact but at increased …

After Notice And Choice: Reinvigorating “Unfairness” To Rein In Data Abuses, Lina M. Khan, Samuel A.A. Levine, Stephanie T. Nguyen

Faculty Scholarship

The Federal Trade Commission (FTC) has long served as America’s default privacy enforcer. Yet for much of its history, the agency relied on self-regulation through a “notice and choice” framework that left the public vulnerable in an era of rampant data collection and digital surveillance. Businesses overwhelmed users with dense privacy notices while amassing and exploiting vast troves of personal data. The agency’s historical approach, rooted in outdated assumptions about self-correcting markets and an ideologically cramped view of the FTC’s authorities and mandate, helped usher in a digital economy where data abuses became routine.

During the Biden Administration, the FTC …

Functional Mobility And Pain Are Improved For 6 Years After Adolescent Bariatric Surgery, Changchun Xie, Anita P Courcoulas, Carroll M Harmon, Michael A Helmrath, Stephanie Sisley, Marc P Michalsky, Justin R Ryder, Teen‐Longitudinal Assessment Of Bariatric Surgery (Teen‐Labs) Consortium

Faculty, Staff and Students Publications

Objective: The long-term durability of improvements in functional mobility and musculoskeletal pain for adolescents after metabolic and bariatric surgery (MBS) is unknown.

Methods: We used the Teen-Longitudinal Assessment of Bariatric Surgery (Teen-LABS) study to determine the change in mobility and pain among adolescents who underwent MBS. From standardized 400-m walk tests, we analyzed walk time, heart rate (HR) parameters, and musculoskeletal pain.

Results: The mean walk time improved from 383 s (95% CI: 368-399) prior to surgery to 351 s (95% CI: 330-372) by 6 years. The mean resting HR was 90 beats per minute (bpm; 95% CI: 87-93) preoperatively …

Identifying Perceived Barriers In Special Education, Alexus K. Wilson

Electronic Theses and Dissertations

This study explored the lived experiences of teachers and administrators supporting students with disabilities transitioning from special education to general education settings. Grounded in a phenomenological approach within a qualitative research paradigm, the research aimed to uncover how educators perceive and navigate the challenges, barriers, and successes associated with this complex transition process. Data were collected through semistructured interviews with a purposive sample of special education teachers, general education teachers, and school administrators from a small urban district in Texas. The study followed a qualitative methodology that focused on transition theory, and data were analyzed using thematic analysis.The research procedures …

Exploring Effective Institutional Strategies To Retain Adult Learners In Undergraduate Online Programs At A Faith-Based Institution, Fernando Rodriguez-Ramos

Electronic Theses and Dissertations

The aim of this qualitative research study was to identify dynamic advising and high-impact educational practices employed by advisors and faculty that prevent dropout and improve online adult learners’ performance and retention in undergraduate courses at a 4-year private, faith-based institution in the southwestern United States. This study explored the impact of these practices from the students’, faculty’s, and advisors’ perspectives to provide suggestions for improvement that would help retain these students in the classroom and the institution. The problem this study explored was that adult learner dropout from online higher education institutions is a persistent and increasing issue faced …

Leadership And Peer Support Of Surgeons Post-Adverse Event: A Phenomenological Study, Maxine E. Trent

Electronic Theses and Dissertations

Abstract Surgeons are leaving the active practice of surgery and fewer physicians are pursuing surgical training, as a result the United States is predicted to have a shortage of surgeons until 2050. Surgery hosts a multitude of occupational stressors, one of which is interoperative adverse events and the subsequent experience of second victims. The literature indicates surgeons prefer psychological/emotional support from peers after interoperative adverse events. However, best practices for how to deliver peer and leadership support responses when surgeons experience second victims have not been established. This was a phenomenological qualitative study targeting practicing surgeons across the United States. …

Do Resiliency And Coping Skills Moderate The Relationship Between Mood Disorders And Parenting Styles Due To Parental Relationship Distress?, Tiffany Burks

Electronic Theses and Dissertations

Parental relationship dynamics such as intimate partner violence (IPV), interpersonal distress (IPD), and parental alienation (PA) can significantly affect both mental health and parenting practices. This study examined whether personal strengths, specifically resilience and problem-focused coping, could help buffer these negative outcomes. Correlational analyses showed that IPV, IPD, and PA were positively associated with symptoms of depression and anxiety. IPV and PA were also negatively associated with the use of an authoritative parenting style. In contrast, resilience and problem-focused coping were linked to fewer mood-related symptoms and greater use of authoritative parenting. Multiple regression analyses revealed that IPV significantly predicted …

The Ownership Of Mine Tailings, Barry Barton

UBC Law Review

No abstract provided.

Hybrid Computing For Real-Time Model Predictive Control Of A Buck Converter, Grace Paladichuk

Master's Theses

Advancements in power electronics require high switching frequencies which the digital control routines of the systems cannot keep up with. Analog computing is added to digital control systems to prevent bottlenecks and allow real-time implementation. This paper proposes a hybrid computing model predictive control system for a buck converter. The control system implements the gradient dynamics of the optimization function using digital computing, and the gradient dynamics for the penalty function and integrator using analog computing. For the full simulations of the entire system, the PLECS RT Box is used to simulate the controller in real time with a 1 …

Bentonite Erosion And Cation Exchange Effects On Hydraulic Conductivity Of Geosynthetic Clay Liners, Grace Paananen

Master's Theses

Geosynthetic clay liners (GCLs) are used in municipal solid waste landfill (MSW) liner and cover systems as an alternative to thick compacted clay layers. Previous field studies have revealed potential for bentonite erosion in GCLs when subjected to wet-dry cycles that occur when GCLs are placed on slopes, covered with a geomembrane, and left exposed without additional soil cover. A laboratory test program was conducted to quantify the effects of bentonite erosion on hydraulic conductivity of sodium-bentonite geosynthetic clay liners and samples subjected to cation exchange treatment in addition to bentonite erosion. This test program determined what level of bentonite …

International Abolitionist Advocacy: The Rise Of Global Networks To Advance Human Rights And The Promise Of The Worldwide Campaign To Abolish Capital Punishment, John D. Bessler

All Faculty Scholarship

The modern international human rights movement began with the U.N. Charter and the U.N. General Assembly's adoption of the Universal Declaration of Human Rights. Although the movement to abolish the death penalty is rooted in the Enlightenment, global advocacy to halt executions and to abolish capital punishment has accelerated exponentially in recent decades. This Article discusses the origins of global networks to advance human rights and highlights the growing international advocacy, including by nation-states and nongovernmental organizations ("NGOs"), for a worldwide moratorium on executions and to abolish capital punishment altogether. The total number of countries conducting executions in the past …

The Missed Connection: Why Some Travelers Choose Not To Visit Montana, Kika Bradford, Glenna Hartman, Matthew Pettigrew, Melissa Weddell

Institute for Tourism and Recreation Research Publications

Montana attracts millions of visitors drawn by its natural beauty, outdoor recreation, and cultural heritage. A significant portion of these travelers are repeat visitors; however, some travelers visit only once and choose not to return. This study explores what drives that disengagement.

Analysis Study Of Antibacterial Efficacy And Cytotoxicity Of Prepared Metal-Based Nanoparticles Against Streptococcus Mutans: Focus On Gold Nanoparticles, Fattin Fadhil, Azhar Haleem, Abdulrahman Ali, Ahlam Mohammed

Journal of Applied Sciences and Nanotechnology

New approaches have been developed to combat bacterial infections because of the growing threat of antibiotic-resistant bacteria. Gold colloidal nanoparticles and their applications as antibacterial agents have shown promising strategies due to these properties. The properties of nanoparticles, including size, shape, and surface charge, play an essential role in determining antibacterial activity. Pulsed laser ablation in a liquid medium was utilized to produce gold nanoparticles, an environmentally friendly method. Gold NPs were produced in ultrapure water. Experimental research was done to determine the impact of the number of laser pulses on the nanoparticles' size, shape, and concentration. Surface plasmon resonance …

Performance Comparison Of Plasmonic Sensors Via Ion Reduction And Koh Methods, Ruqaya Shlaga, Alwan Alwan, Mohammed Mohammed

Journal of Applied Sciences and Nanotechnology

In this work, several types of plasmonic sensors were prepared by different methods (ion reduction method and wet-chemical KOH route) to detect the ultralow anti-CIPRO concentration using AgNPs/PSi SERS-active substrate with AgNPs concentration. The process was optimized to be very effective in detecting CIPRO and to have a high amplification factor (EF). For the deposition of AgNPs with a concentration of 5×10-3 M and the maximum density of hotspot areas, a nanocrystalline silicon sample prepared by the KOH method and an ion reduction technique before etching was used. We tested an AgNPs/PSi SERS substrate, which showed better performance in detecting …

Antibacterial Performance Of Fe₂O₃ Nanoparticles Synthesized Via Biosynthesis From Chitosan, Faisal Kadhim, Mohamed Bedoui, Ali Aldalawi

Journal of Applied Sciences and Nanotechnology

In this study, Fe₂O₃ nanoparticles were synthesized by a hydrothermal method using chitosan extract and ferric chloride (FeCl₃) as precursor at 150 °C. The hydrothermal approach provides precise control over the size and morphology of the nanoparticles by promoting the decomposition and crystallization of the precursors near their evaporation temperatures. The aim of this study was to quantify the antibacterial activity of the nanoparticles to regulate the production of Fe₂O₃ NPs. The optical and structural properties of Fe₂O₃ nanoparticles (NPs) were investigated and tested using various techniques, including X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), ultraviolet-visible (UV-vis) spectroscopy …

Characterization And Water Uptake Of Reinforced Polymer Blend Using Nanoclay And Rock Wool, Rana Salih, Shanaz Ahmad

Journal of Applied Sciences and Nanotechnology

The current work focuses on assessing flexural properties, and water uptake of polymeric composites prepared using various reinforcements. These additives consist of kaolinite nano clays and rock wool (RW). In addition to a polymer blend that consists of epoxy and polyester resins as the matrix. The castings were made using a hand lay-up approach. Nanoclay (NC) was added in weight fractions of 5% and 7%, together with RW added in a volume fraction of 10% as reinforcement. The impact test was employed to decide the optimum mixing ratio of the polymer blend that used as a matrix. From the results …

Analyzing The Dihedral Scattering Component Of P-Band Sar Signals For Trunk Permittivity Estimation – A Concept Study, Anke Fluhrer, Hamed Alemohammad, Thomas Jagdhuber

Geography

A new retrieval method, based on a hybrid decomposition technique and the extended (x-) Fresnel model, is proposed for estimating trunk permittivity from polarimetric P-band SAR observations. P-band SAR observations of NASA's Airborne Microwave Observatory of Subcanopy and Subsurface (AirMOSS) mission campaign are employed to test the proposed retrieval method at individual measuring stations across the U.S. between 2013 and 2015. In order to test the feasibility of the x-Fresnel model for such analyses and its sensitivity to required input parameters, a detailed sensitivity study revealed that at P-band frequencies there is a need to account for scattering losses, phase …

A Concise Formalization Of Partial Falsifiability, Water Logic, And Neither Nor Logic With Neutrosophic Logic, Takaaki Fujita, Florentin Smarandache, Victor Christianto

Neutrosophic Sets and Systems

No abstract provided.

Interval Valued Fermatean Neutrosophic For Analysis Risk Management Of Practical Teaching Quality In University Art And Design Programs, Yu Cai

Neutrosophic Sets and Systems

No abstract provided.

Decomposition Of Neutrosophic Zero-Divisor Graph, Balakrishnan A, Kanchana M, Said Broumi, Thirugnanasambandam K

Neutrosophic Sets and Systems

No abstract provided.