Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

University of North Dakota

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 511 - 540 of 8603

Full-Text Articles in Entire DC Network

Spacesuit Hard Upper Torso Assembly: Development Of Fit Metrics And Customized Design Frameworks, Will J. Green Jan 2023

Spacesuit Hard Upper Torso Assembly: Development Of Fit Metrics And Customized Design Frameworks, Will J. Green

Theses and Dissertations

The Hard Upper Torso (HUT) of the spacesuit pressure garment is a central component of a spacesuit, enclosing the upper body and connecting with the shoulder joints, bearings, helmet, hatch, and waist-brief-hip components. The shape and positioning of the HUT and its connected components are critical for ensuring comfort, range of motion, field of view, and minimizing astronaut injury risk.This dissertation aims to build upon previous work on spacesuit sizing and develop new spacesuit fit metrics. Motion-tracking technology has been utilized to define the reach envelope and range of motion for test subjects wearing a HUT. Subjective surveys have also …

Go to article

Continuous Decomposition Of Corn Stover-Derived Lignin To Valuable Products And Vanillin, Wyatt Larson Jan 2023

Continuous Decomposition Of Corn Stover-Derived Lignin To Valuable Products And Vanillin, Wyatt Larson

Theses and Dissertations

As the world moves away from fossil fuels, it is important to find new feedstock sources not only for fuels but also for chemicals and materials used every day that are also derived from fossil fuels. One potential source is lignin. Lignin is a large complex polymer with an abundance of cyclic groups making it a good candidate to produce chemicals that typically come from crude oil. However, the transformation of lignin into these compounds is a challenge, and processes to use lignin as a crude oil substitute have yet to be commercialized. Lignin is present in woods, grasses, and …

Go to article

Core Values In Higher Education: Students, Faculty, Staff, And Administrator Alignment At A Midwestern Research University, Rodney Deshan Lewis Jan 2023

Core Values In Higher Education: Students, Faculty, Staff, And Administrator Alignment At A Midwestern Research University, Rodney Deshan Lewis

Theses and Dissertations

A growing body of research exists on core values. However, limited scholarly research exists on core values in higher education institutions that operate in volatile, uncertain, complex, and ambiguous (VUCA) environments. And yet, society entrusts higher education with our nation’s most important resource—our future leaders. University adopted core values serve as guideposts for institution stakeholders. Core values are important for an organization’s identity by providing concise and powerful guidelines for collective stakeholder action. Core values provide a true north values vector, especially when ambiguity and uncertainty exist. This, in turn, helps increase judgement and decision-making skills that are clearly aligned …

Go to article

Analysis, Development And Design For Early Fault Detection And Fire Safety In Lithium-Ion Battery Technology, Daniel Kelly Boakye Danquah Jan 2023

Analysis, Development And Design For Early Fault Detection And Fire Safety In Lithium-Ion Battery Technology, Daniel Kelly Boakye Danquah

Theses and Dissertations

Energy storage technologies in its natural form play a key role in the electrical infrastructure, renewable and mobility industry. This form includes the material nomenclature for cell. technology, battery module design, Battery enclosure system design, control, and communication strategy, chemistry profile of various cell technologies, formation and formfactors of cell structure, electrical and mechanical properties of a lithium-ion cell, behavior of the cell under high voltage, low voltage, elevated temperature and lower temperature, multiple charging of a lithium-ion batteries. Energy storage industry is growing rapidly, and the industry is experiencing an unprecedented safety concern and issues in terms of fire …

Go to article

Acting On The Need Of A Client, Caregiver, And Practitioner Seating And Mobility Guide, Aleksander Robert Kohn Jan 2023

Acting On The Need Of A Client, Caregiver, And Practitioner Seating And Mobility Guide, Aleksander Robert Kohn

Occupational Therapy Capstones

There is a significant need for individuals with a disability and specific mobility limitations to require a wheeled mobility device. Wheeled mobility devices allow individuals to gain and/or maintain independence and engagement in occupations. The evaluation, prescription, and fitment of wheeled mobility devices are complex, requiring clients and caregivers to use and maintain these devices in specific ways. Barriers caregivers face can include not positioning the client properly in the wheeled mobility device, damaged or missing wheelchair parts, or improper positioning of the straps and belts, affecting posture, which could lead to secondary complications.

Go to article

Und Leads: A Strategic Vision For The University Of North Dakota, University Of North Dakota Jan 2023

Und Leads: A Strategic Vision For The University Of North Dakota, University Of North Dakota

LEADS Development Documents

Official UND LEADS strategic plan for the University of North Dakota. The plan presents UND’s mission and vision, introduces the five LEADS pillars of Learning, Equity, Affinity, Discovery, and Service, and outlines strategic priorities developed through campus and community input.

Go to article

Perceived Quality Of Life In Oil Boomtowns: A Case Study Of Western North Dakota, Ian Nathaniel Geller Jan 2023

Perceived Quality Of Life In Oil Boomtowns: A Case Study Of Western North Dakota, Ian Nathaniel Geller

Theses and Dissertations

The purpose of this study was to evaluate the changes in the quality of life (QoL) perceived by long-term community members in oil boomtowns in Western North Dakota. The study focused on basic QoL indicators and indicators based on oil boom effects. This study explored what QoL indicators mattered most to long-term community members. The main method in this study was a principal component analysis (PCA) done on two surveys from 2012 and 2020 which included many indicators related to oil boom effects. This statistical method grouped together indicators related to each other according to the perception of long-term community …

Go to article

Community College Faculty Perceptions Of Open Educational Resources, Heather Ann Leavitt Jan 2023

Community College Faculty Perceptions Of Open Educational Resources, Heather Ann Leavitt

Theses and Dissertations

This study examined Open Educational Resources (OER) through a community college faculty perspective. Specifically, this study aimed to gain a deeper understanding of faculty motivations surrounding OER, faculty perceptions of OER’s influences on students, and pedagogical changes that faculty have made in response to OER. A qualitative research methodology was chosen, including semi-structured phenomenological interviews conducted with community college faculty members. The methodology was guided by activity theory. Faculty discussed their use of the 5 Rs (retain, reuse, revise, remix, redistribute) in practice, with revise being the most commonly used of the 5 Rs. Notably, the eight participants had mixed …

Go to article

Synthesis And Characterization Of Cellulose Acetate Based Bio-Composites, Enoch Kehinde Sofowora Jan 2023

Synthesis And Characterization Of Cellulose Acetate Based Bio-Composites, Enoch Kehinde Sofowora

Theses and Dissertations

Sustainability has become a critical component of materials research. Plastic disposal is a major problem facing us. Along with recycling, bioplastics have emerged as a potential solution. However, bioplastics have only found limited applications because of their weak mechanical properties. Hence numerous research is being done in the application of reinforcement additives in bioplastics to develop bioplastic composites or blends with improved properties. This study explores using renewable and biodegradable natural fibers as well as agricultural biomass wastes as reinforcement additives to enhance the properties of bioplastics. This also provides the opportunity to valorize agricultural biomass wastes. Solvent casting is …

Go to article

Carbon Capture, Utilization, And Storage, University Of North Dakota. Energy And Environmental Research Center Jan 2023

Carbon Capture, Utilization, And Storage, University Of North Dakota. Energy And Environmental Research Center

EERC Brochures and Fact Sheets

Fact sheet about carbon capture, utilization, and storage (CCUS) and the Energy & Environmental Research Center’s CCUS capabilities. Includes information on the Plains CO2 Reduction (PCOR) Partnership initiative, Brine Extraction and Storage Test (BEST), Carbon Storage Assurance Facility Enterprise (CarbonSAFE), Red Trail Energy Carbon Capture and Storage, a feed study at Coal Creek Station, Bell Creek and Cedar Creek anticline projects, and Partnership for CO2 Capture (PCO2C).

Go to article

Addressing The Psychosocial Impacts And Recovery Of A Patient With Carpal-Metacarpal (Cmc) Arthroplasty: A Case Study, Christopher Hernandez Jan 2023

Addressing The Psychosocial Impacts And Recovery Of A Patient With Carpal-Metacarpal (Cmc) Arthroplasty: A Case Study, Christopher Hernandez

Occupational Therapy Capstones

Background & Purpose: Hands are an integral part of what defines us as human beings, they provide us with independence in work, leisure, self-care, and social interactions (Hannah, 2011). Injury to the upper extremity can harm one’s ability to engage in daily occupations, and often can result in a wide range of consequences affecting the physical, psychological, social, and economic aspects of a person’s everyday life (Cederlund et al., 2010; Chown et al., 2017). Treatment is often placed on the physical aspects of the injury, while the phycological symptoms associated with the injury are often not addressed (Jack & Estes, …

Go to article

Primitive Reflex Screening And Caregiver Education And Support. A Product To Support Children With Retained Primitive Reflexes Transitioning Into The Formal Education System., Anna Justine Logan Jan 2023

Primitive Reflex Screening And Caregiver Education And Support. A Product To Support Children With Retained Primitive Reflexes Transitioning Into The Formal Education System., Anna Justine Logan

Occupational Therapy Capstones

Infants are born with movement patterns called primitive reflexes. Primitive reflexes are active for approximate times during the first few years of life (Smet et al, 2020; Myott et al., 2016). Retained primitive reflexes are primitive reflexes that have not integrated in the expected time. Retained primitive reflexes have been linked to a variety of developmental delays in older children including fine and gross motor (Gieysztor et al., 2018a), visual (Andrich et al., 2018), and academic performance (Feldhacker et al., 2021; Calvin & Ramli, 2020).

Go to article

Und Leads: A Strategic Vision For The University Of North Dakota, University Of North Dakota Jan 2023

Und Leads: A Strategic Vision For The University Of North Dakota, University Of North Dakota

LEADS Implementation Documents

Official UND LEADS strategic plan for the University of North Dakota. The plan presents UND’s mission and vision, introduces the five LEADS core values of Learning, Equity, Affinity, Discovery, and Service, and outlines the strategic priorities guiding UND’s implementation work.

Go to article

Effects Of Occupation Based Interventions Related To Play And Leisure For Minimization Of Post-Concussion Or Mild Traumatic Brain Injury Symptoms In Adolescents: A Critically Appraised Topic, Anneka Harris, Melody Mackenzie, Emmy Miller Jan 2023

Effects Of Occupation Based Interventions Related To Play And Leisure For Minimization Of Post-Concussion Or Mild Traumatic Brain Injury Symptoms In Adolescents: A Critically Appraised Topic, Anneka Harris, Melody Mackenzie, Emmy Miller

Critically Appraised Topics

Occupational therapy has a vital impact on healthcare providing a holistic approach to care with the goal of improving quality of life, increasing participation in meaningful occupations, and speeding up the recovery process for a variety of health conditions. In concussion management, occupational therapy professionals play a critical role on the multidisciplinary team, understanding the important interaction between the athlete, occupation, and the environment (Andreas et al., 2021). Even though the target population for this critically appraised topic (CAT) is adolescents, athletes (those who experienced a sports-related concussion) comprise most of the studies due to the prevalence of sports-related concussions. …

Go to article

Effectiveness Of Occupational Therapy’S Role In Promotion Of Role Fulfillment With Aviation Students In Higher Education Who Are Experiencing Mental Health Conditions, Payton O. Schilke, Olivia G. Schoffstall, Lexi K. Smith, Gracie J. Stimac Jan 2023

Effectiveness Of Occupational Therapy’S Role In Promotion Of Role Fulfillment With Aviation Students In Higher Education Who Are Experiencing Mental Health Conditions, Payton O. Schilke, Olivia G. Schoffstall, Lexi K. Smith, Gracie J. Stimac

Critically Appraised Topics

This critically appraised topic paper focuses on occupational therapy’s role and the interventions for improving the mental health of aviation students in higher education. Aviation students are higher education student pilots learning to become pilots within various roles. Stress and fatigue among students in higher education are prominent problems (Beiter, 2015; Kalmakis et al., 2021). The focus on aviation students for this critically appraised topic paper reveals the unique stressors relating to flight training that is added on top of the normal academic stress load that university students face (Robertson & Ruiz, 2010). Due to these stress factors, the mental …

Go to article

Two Techniques For Improving Renewable Energy Performance: Fast Charging Of Li-Ion Batteries And Electrostatic Filtration Of Wind Turbine Gear Box Oil, Shabaz Khan Jan 2023

Two Techniques For Improving Renewable Energy Performance: Fast Charging Of Li-Ion Batteries And Electrostatic Filtration Of Wind Turbine Gear Box Oil, Shabaz Khan

Theses and Dissertations

Currently, the faster charging speed of batteries is restricted, especially in freezing the temperature. Research on charging lithium-ion cells at various temperatures ranging from -50 to 60 degrees Celsius has been actively conducted in recent years. Lithium-ion cells' charging capacity is a crucial property in regular consumer and specialized applications, such as military, space, and electric and hybrid vehicles. Although the conductivity of the electrolyte has been ruled out as a limiting factor, there are still many debates on the factors that limit the charging ability at low temperatures. The primary objectives of this work are to develop a charging …

Go to article

Aerocom: Winter 2023, John D. Odegard School Of Aerospace Sciences Jan 2023

Aerocom: Winter 2023, John D. Odegard School Of Aerospace Sciences

Aerocom: John D. Odegard School of Aerospace Sciences Alumni Magazine

No abstract provided.

Go to article

Mitigating Global Temperature Change Through Industrial Sector Improvements: A Case Study In Automotive Manufacturing, Alec Joseph Ernst Jan 2023

Mitigating Global Temperature Change Through Industrial Sector Improvements: A Case Study In Automotive Manufacturing, Alec Joseph Ernst

Theses and Dissertations

Manufacturing is an integral part of our country’s flow of products and people and a top contributor to carbon emissions, promoting global temperature rise. During processing, toxic substances are emitted across the value chain. These emissions account for nearly 25% of all greenhouse gas emissions in the United States and the World. Until 2023, an accessible pathway for manufacturing companies to transition to net-zero emissions hasn’t been made readily available. The current research was conducted to determine if reducing carbon emissions in manufacturing facilities through efficiency improvements, process optimization, and technology advancements can mitigate global temperature change.This quantitative, mixed-method approach …

Go to article

A Deep Review Of Sustainable Approaches For Hydrogen Production For Energy Generation, Patrick Bernard Ferron Jan 2023

A Deep Review Of Sustainable Approaches For Hydrogen Production For Energy Generation, Patrick Bernard Ferron

Theses and Dissertations

Fossil fuel energy sources such as coal, oil, and natural gas produce greenhouse gases upon combustion. Over time the greenhouse gases trap heat in the atmosphere and cause global temperatures to continually increase. This continued rise in global temperatures has led to severe climate conditions that have resulted in increasing environmental, financial, social, and medical issues. To mitigate the rise in global temperatures, and the negative effects associated with it, the carbon intensity of our energy sources must be substantially reduced or eliminated where possible. In addition, alternate sources of carbon-free energy sources must be pursued and implemented. Hydrogen is …

Go to article

Application Of Artificial Intelligence And Multi-Omics To Understand The Effect Of Heavy Metals Exposure On Human Health, Sonalika Singhal Jan 2023

Application Of Artificial Intelligence And Multi-Omics To Understand The Effect Of Heavy Metals Exposure On Human Health, Sonalika Singhal

Theses and Dissertations

IARC classified arsenic (iAs) as “carcinogenic to humans”, but despite the health consequences, there is no molecular signature available yet to predict when exposure may lead to the disease development. In this study, a three-step analysis was employed: (1) the gene expression profiles obtained from diverse arsenic-exposed populations were utilized to identify differentially expressed genes associated with arsenic exposure in human subjects, (2) the gene expression profiles induced by arsenic exposure in different myeloma cancer cell lines were used to define common genes and pathways altered by arsenic exposure,(3) the genetic profiles of human bladder cancer studies were used to …

Go to article

Assessing The Effectiveness Of Low-Cost Sensors As Probable Alternatives For Conventional Air Monitoring Devices, Issa Adegbola Tijani Jan 2023

Assessing The Effectiveness Of Low-Cost Sensors As Probable Alternatives For Conventional Air Monitoring Devices, Issa Adegbola Tijani

Theses and Dissertations

In November 2022, Allegheny County residents raised concerns about increased air pollution, especially in the Clairton region area. Due to the recent air inversion, the Clairton region was regarded as a highly polluted area because of the concentrated hydrogen sulfide smell invading the area and the exceedance of the daily PM2.5 average. Consequently, Allegheny County Health Department installed low-cost sensors (PurpleAir) in Mon Valley regions to increase the air monitoring rate and verify the efficiency of federal Reference Methods in place. Low-cost sensors are a relatively new technology adopted in air monitoring. Therefore, this project seeks to assess the effectiveness …

Go to article

Matlab-Based Simulation Of A Hybridized Tri-Generation Geothermal-Wind-Solar System In Bowman County, North Dakota, Moones Alamooti Jan 2023

Matlab-Based Simulation Of A Hybridized Tri-Generation Geothermal-Wind-Solar System In Bowman County, North Dakota, Moones Alamooti

Theses and Dissertations

Bowman County, North Dakota, currently relies on coal for over half of its electricity, contributing to significant greenhouse gas emissions. This study employs advanced MATLAB-based modeling to assess the feasibility of transitioning to a hybrid renewable energy system. The designed system includes capacities of 85.7 MW for wind, 24.4 MW for solar PV, 2.03 MW for geothermal, and 195 MWh for storage, tailored to meet the county's growing daily energy demands. Simulations confirm the system's ability to fulfill over 90% of projected daily loads by 2040, with a competitive levelized cost of $105.226/MWh over 15 years. This customized solution reduces …

Go to article

Conducting Fog Research And Abatement Using Unmanned Aircraft Systems (Uas), Michael Douglas Willette Jan 2023

Conducting Fog Research And Abatement Using Unmanned Aircraft Systems (Uas), Michael Douglas Willette

Theses and Dissertations

The tremendous safety and monetary impacts of long-duration fog events continue to spur interest in its anthropogenic dissipation. With the emergence of the Unmanned Aircraft Systems (UAS) platform and the development of miniaturized atmospheric sensors, more efficient methods of fog research and anthropogenic fog dispersal may be achieved. The feasibility of a supercooled fog dispersal project in the Red River Valley and the efficacy of using the UAS platform to acquire in-situ fog microphysical data are explored. A 30-year climatology of the Red River Valley indicates increased supercooled fog potential between early November through early April, peaking in March. Five …

Go to article

Integrating Technology Into Wildlife Surveys, Sally E. Yannuzzi Jan 2023

Integrating Technology Into Wildlife Surveys, Sally E. Yannuzzi

Theses and Dissertations

Technology is rapidly improving and being incorporated into field biology, with survey methods such as machine learning and uncrewed aircraft systems (UAS) headlining efforts. UAS paired with machine learning algorithms have been used to detect caribou, nesting waterfowl and seabirds, marine mammals, white-tailed deer, and more in over 19 studies within the last decade alone. Simultaneously, UAS and machine learning have also been implemented for infrastructure monitoring at wind energy facilities as wind energy construction and use has skyrocketed globally. As part of both pre-construction and regulatory compliance of newly constructed wind energy facilities, monitoring of impacts to wildlife is …

Go to article

Synthesis And Characterization Of Advanced Materials, Mackenzie E. Short Jan 2023

Synthesis And Characterization Of Advanced Materials, Mackenzie E. Short

Theses and Dissertations

In vivo bone tissue engineering is a highly complex process that involves the diffusion of osteoprogenitor cells throughout the scaffold, requiring that the scaffolds have interconnected pores of ~100 μm in diameter to allow for proper diffusion of oxygen and nutrients. For cell adhesion to occur, the scaffold must be made of a bioactive material and have strength that can support the growth and movement of tissue. This study continued the development and characterization of using solvent casting as a synthesis process for the manufacturing of porous scaffolds. The engineered scaffolds using NaCl as the pore former showed excellent porosity …

Go to article

Real-Time Monitoring And Controlling Feedstock Properties Fluctuations In Solid Fuel-Fired Energy Conversion Systems, David John Stadem Jan 2023

Real-Time Monitoring And Controlling Feedstock Properties Fluctuations In Solid Fuel-Fired Energy Conversion Systems, David John Stadem

Theses and Dissertations

Fluctuations in feedstock properties significantly impact the reliability, efficiency, and emissions of energy conversion systems.The behavior of ash-forming impurities in solid feedstocks such as coal, biomass, petroleum coke, and municipal solid waste is a perennial challenge in energy generation. The transition to power plants with dynamic ramping capabilities as well as net-zero or negative carbon emissions is hampered in part by the impacts of ash-forming impurities on systems such as gasifiers, combustors, gas cleanup, and carbon capture systems. Many ash-related events that disrupt operations are caused by fluctuations in the properties of the feedstock. Online feedstock properties monitoring systems have …

Go to article

Buckling Behavior Of Metallic Thin-Walled Stiffened Cylindrical Shells Under Static Loading, Fnu Tabish Jan 2023

Buckling Behavior Of Metallic Thin-Walled Stiffened Cylindrical Shells Under Static Loading, Fnu Tabish

Theses and Dissertations

This thesis aims to estimate and improve the buckling strength of the cylindrical storage tanks under static loadings. Initially, for the verification of the overall performance of the numerical modeling approach; a computational analysis was conducted to calculate the linear buckling behaviour of empty cylindrical shells with different H/D and D/t ratios using ANSYS workbench 2021. Results revealed that the FE models accurately predict static critical buckling stress which is mainly depends on the D/t ratio. The solution of the buckling analysis provides multiple buckling mode shapes and critically buckling load values. Those mode shapes (eigenvectors) can indicate the expected …

Go to article

Dynamics Of Flood Flow In Red River Basin, Vida Atashi Jan 2023

Dynamics Of Flood Flow In Red River Basin, Vida Atashi

Theses and Dissertations

In recent decades, flooding has become a major issue in many areas of the Upper Midwest. Many rivers and streams in the region had considerable increases in mean annual peak flows during this period, which was driven by a combination of natural factors including discharge synchrony with the spring thaw, ice jams, glacial lake plain, and a decrease in gradient downstream. The Red River of the North is a prominent river in the United States and Canada's Upper Midwest. It flows from its headwaters in Minnesota and North Dakota to Lake Winnipeg in Manitoba. The river is well-known for its …

Go to article

Tribo-Mechanical Behavior Of Cold Rolled And Directed Energy Deposited Niti Alloy For Space Applications, Hyunsuk Choi Jan 2023

Tribo-Mechanical Behavior Of Cold Rolled And Directed Energy Deposited Niti Alloy For Space Applications, Hyunsuk Choi

Theses and Dissertations

The manufacturing industry is constantly looking for ways to improve processes and reduce costs while maintaining or enhancing material properties. Nickel-Titanium (NiTi) alloy, also known as Nitinol, has unique properties such as shape memory and superelasticity, which make it a valuable material for various applications in the medical and aerospace industries. However, due to its high toughness, strength, and ductility, NiTi is difficult to form and machine, leading to severe tool wear and high cutting energy. Conventional manufacturing processes have limitations in producing complex or porous designs, restricting NiTi's potential applications. Additive manufacturing techniques have been explored as a way …

Go to article

Enhancing Resin Composite Using Nanoparticle Embedded Jute Fiber And Exploring Plant Polymer For Biomedical Applications, Md Sultan Mahmud Jan 2023

Enhancing Resin Composite Using Nanoparticle Embedded Jute Fiber And Exploring Plant Polymer For Biomedical Applications, Md Sultan Mahmud

Theses and Dissertations

The severe detrimental effect of nondegradable and toxic synthetic materials on the environment in the last couple of decades has led researchers to focus more on eco-friendly products such as building materials, medical instruments, sports, textile, and automobile industries. Lignocellulosic plants and their fibers are the first choices for both material and biological science researchers due to their chemical structure, abundance, low cost, and nontoxic nature. These plants are composed of three major biopolymers such as cellulose, hemicellulose, and lignin. Cellulose is the most abundant polymer. In the recent past natural fibers have attracted substantial importance as potential structural materials …

Go to article

First Prev Next Last