Digital Commons Network^™

Digitalizing The Grassroots. Transforming Internet Access In Africa And Globally Bottom-Up, Lee W, Mcknight, William Lehr, Danielle Smith, Jane Appiah-Okyere, Kwaku Antwi

The Lender Center for Social Justice

This paper discusses bottom-up approaches to internet access in Africa, emphasizing grassroots-led digitalization strategies. It argues for community-centered, inclusive models as alternatives to top-down infrastructure deployment.

Florida's Vanishing Heritage: Climate Risk And Adaptation At Florida Heritage Sites, Levi Watson

Electronic Theses and Dissertations, 2020-2023

This thesis examines history and preservation at coastal cultural heritage sites threatened by climate change and explores climate adaptation strategies at two sites on Florida's Atlantic coast. Current climate change models indicate the planet may see as much as 1.1 meters, or four feet, of global average sea level rise by the year 2100, requiring site managers to intervene by using adaptation techniques to improve resilience and guard against the loss of cultural heritage monuments. Understanding the history and importance of these sites to the surrounding communities and their numerous stakeholders is the first step to ensuring these sites remain …

Understanding The Mechanisms By Which Cable Sway Produces Motion Artifact In Mobile Electroencephalography, David Rojas

Electronic Theses and Dissertations, 2020-2023

Mobile brain/body imaging utilizes electroencephalography (EEG) to record brain activity during human walking in dynamic environments. Motion artifact from cable sway affects the quality of EEG signals collected from the scalp, masking contributions of synchronously firing neurons. Previous studies have explored cable sway-induced motion artifact, but only during vigorous exercise or controlled sinusoidal motion. Therefore, a need remains to further understand the underlying mechanisms of this artifact, as it may help with developing real-time mitigation methods, reducing reliance on offline signal processing. In this thesis, I aimed to show that controlled cable sway could produce specific motion artifact waveforms in …

Experimental Analysis On Effects Of Inclination And Direction On Supercritical Carbon Dioxide Heat Transfer For Internal Pipe Flow, Emmanuel Gabriel-Ohanu

Electronic Theses and Dissertations, 2020-2023

Supercritical carbon dioxide (sCO2) can be utilized as a working or heat transfer fluid in various thermal systems with applications in large-scale power cycles; portable power production units, coolant systems and devices. However, there are no sufficient methods and equations of heat transfer coefficient correlations, and in addition insufficient research studies about the mechanisms controlling heat transfer processes for sCO2. This study is motivated by the need to understand the intricate properties of sCO2 heat transfer and fluid dynamics with an emphasis on flow direction and inclination effects. This paper presents the study on effects of gravity, buoyancy on sCO2 …

Puerto Rico's Cultural Industry (Re)Construction: A Study On Vulnerable Systems, Post-Disaster U.S. Philanthropy, And Autogestión Through Puerto Rican Artists And Cultural Managers' Perspectives, Andrea Ocasio Cruz

Electronic Theses and Dissertations, 2020-2023

Hurricane Maria hit Puerto Rico in 2017, and its aftermath significantly changed the local cultural industry's funding infrastructure. Philanthropic foundations in the United States (US) have provided financial support to local artists, educators, cultural managers, and institutions after the storm for over four years. Based on semi-structured interviews with eight participants and fieldwork, this study provides insight into the colonial and neoliberal policies that progressively stripped the cultural industry's public funding infrastructure and ushered in a US-led "impromptu Institute of Culture." This study proposes that Puerto Rico's cultural industry was founded on a vulnerable system shaped by colonialism, resulting in …

Theoretical Analysis Of Charge Conduction And Rectification In Self-Assembled-Monolayers In Molecular Junctions, Francis Adoah

Electronic Theses and Dissertations, 2020-2023

As electrical devices shrink to the atomic scale, it is expected that Moore's law will soon be obsolete for semiconductor devices. In 1974, Avriam and Ratner predicted that organic devices could replace semiconductor technology, leading to extensive research on molecular-based organic devices. This dissertation delves into the theoretical frameworks used to examine the transport in molecular junctions and aims to enhance our comprehension of charge transport and conduction properties. The studies presented in this thesis illustrates that a molecule's alteration by just a single atom can change it from an insulator to a conductor, and also that, by fine-tuning the …

A Multi-Tiered Assessment Of Primary Production In Great Salt Lake, Soren Brothers, Melissa Cobo, R. Douglas Ramsey, Wayne A. Wurtsbaugh, Erin N. Rivers

Watershed Sciences Faculty Publications

Great Salt Lake (GSL) is the largest saline lake in the western hemisphere. Despite this, relatively little is known regarding ecological functioning within the lake, including detailed assessments of rates of primary productivity and ecosystem productivity. Analyses of primary production in GSL are complicated by the high heterogeneity of the system, including a broad salinity gradient from near-fresh conditions at the river confluences in Farmington and Bear River Bays to the hyper-saline conditions of the lake’s northwest arm (Gunnison Bay). Further complicating estimates of primary productivity is the possibility of high rates of benthic primary production (by benthic algae and …

The Impact Of Covid-19 On Collaboration Between School Psychologists And Board-Certified Behavioral Analysts, Taylor J. Bronaugh

Educational Specialist, 2020-current

The aim of this paper is to examine the impact of communication styles brought on by distanced learning and its effect on collaboration for school psychologists and Bord Certified Behavioral Analysts (BCBAs). Prior studies have addressed collaboration habits between these school-based professionals. The current study aims to analyze the impact that COVID-19 had on these practitioners’ collaboration habits and to investigate their current communication and collaboration habits. A mixed methods locally developed anonymous survey was created and used for data collection. Participants were recruited through social-media groups and via word-of-mouth sharing. 20 school-based practitioners shared their perceptions and experiences with …

August 15, 2023 Ereporter, University Of Alabama At Birmingham

eReporter (campus newsletter)

No abstract provided.

Redbird Buzz: Dean Of The Mennonite College Of Nursing Dr. Judy Neubrander, August 15, 2023, John Twork, Judy Neubrander

Redbird Buzz (2022-2025)

Dr. Judy Neubrander, dean of the Mennonite College of Nursing (MCN), is a tenured nursing professor with more than 25 years of academic experience who is leading the college through a time of expansion and opportunity. To help address the nationwide nursing shortage, MCN will officially open a new location in Springfield, in partnership with Memorial Health, on August 18, and the $18 million, 16,000-square-foot expansion of the MCN Simulation Center is underway and scheduled to be completed by fall 2024. In this episode of Redbird Buzz, Neubrander shares how MCN is poised to face the nursing shortage head-on, …

Approved Butte Reduction Works (Brw) Smelter Area Mine Waste Remediation And Contaminated Groundwater Hydraulic Control Site Quality Assurance Project Plan (Qapp) For Microbial Analysis And Biotreatability; Request For Change Brw-2023-02, Josh Bryson

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Surviving In The Ai World As An Architect, Victor Beomseung Jo

English Language Institute: Architecture Posters

No abstract provided.

Forever Or Dying? Art Deco Architecture In China, Cheng Li

English Language Institute: Architecture Posters

No abstract provided.

The Effects Of Microgravity On The Development Of Osteoporosis, Jackson Asiatico

Electronic Theses and Dissertations, 2020-2023

Previous research has identified a potential link between microgravity conditions and the onset of osteoporosis, a connection that stems from altered fluidic pathways crucial in nutrient dispersion and cell stimulation. Specifically, the absence of mechanical loading in space environments reduces fluid shear stress, thereby disrupting the normal flow of interstitial fluid in trabecular bone. This disruption greatly impacts the functionality of osteoblasts and osteoclasts, the vital cells responsible for maintaining healthy bones. The focus of this study aims to explore the impact of microgravity on bone loss in astronauts, establishing the connection between the lack of mechanical loading and the …

Discovery And Targeting Of A Noncanonical Mechanism Of Sarcoma Resistance To Adi-Peg20 Mediated By The Microenvironment, Leonard C Rogers, Jeff C Kremer, Caitlyn B Brashears, Zongtao Lin, Alliny C S Bastos, Adriana Baker, Nicole Fettig, Dong Zhou, Kooresh I Shoghi, Carina A Dehner, John S A Chrisinger, Benjamin A Garcia, Toshinao Oyama, Brian A Van Tine, Et Al.

2020-Current year OA Pubs

PURPOSE: Many cancers lack argininosuccinate synthetase 1 (ASS1), the rate-limiting enzyme of arginine biosynthesis. This deficiency causes arginine auxotrophy, targetable by extracellular arginine-degrading enzymes such as ADI-PEG20. Long-term tumor resistance has thus far been attributed solely to ASS1 reexpression. This study examines the role of ASS1 silencing on tumor growth and initiation and identifies a noncanonical mechanism of resistance, aiming to improve clinical responses to ADI-PEG20.

EXPERIMENTAL DESIGN: Tumor initiation and growth rates were measured for a spontaneous Ass1 knockout (KO) murine sarcoma model. Tumor cell lines were generated, and resistance to arginine deprivation therapy was studied in vitro and …

Optimization Of Alternative Mask Absorber Materials For Euv Lithography, Rajiv Naresh Sejpal

Theses

In efforts to continuously scale feature dimensions in semiconductor manufacturing, the industry has moved from refractive optical lithography to reflective extreme ultra-violet lithography (EUVL). The latter provides a significant improvement in the resolution by illuminating mask patterns using 13.5nm source wavelength at oblique chief ray angles (CRA). A typical EUVL mask consists of a multilayer Bragg mirror topped with a 55-70nm Tantalum-based (Ta-based) absorber stack to obtain layout patterns. This current three-dimensional (3D) mask architecture in combination with a small source wavelength and oblique illumination angles results in mask 3D (M3D) effects such light shadowing, pitch dependent best focus variations, …

Latitudinal Variation In The Potential Activity Of Atlantic Ocean Bacterioplankton Revealed Through 16s Rrna And 16s Rrna Gene Metabarcoding, Ro Allen, Kimberley E. Bird, J. Colin Murrell, Michael Cunliffe

School of Biological and Marine Sciences

The activities of bacterioplankton sustain open ocean biogeochemical and ecological processes, however, little is known about the activity of specific bacterioplankton, especially related to their biogeography across oceanic scales. The Atlantic is the second largest of the world’s oceans and has an essential role in the global carbon cycle. Here, we show congruence in the structure of 16S rRNA and 16S rRNA gene derived bacterioplankton communities throughout the Atlantic Ocean from temperate to tropical regions. We used 16S rRNA:16S rRNA gene ratios as a phylogenetically resolved proxy for potential activity, demonstrating ocean-scale patterns of putative oligotrophy and copiotrophy in major …

Hydrogen, Carbon Dioxide, And Methane Adsorption Potential On Jordanian Organic-Rich Source Rocks: Implications For Underground H2 Storage And Retrieval, Amer Alanazi, Hussein Rasool Abid, Muhammad Usman, Muhammad Ali, Alireza Keshavarz, Volker Vahrenkamp, Stefan Iglauer, Hussein Hoteit

Research outputs 2022 to 2026

Hydrogen (H₂) storage in geological formations offers a potential large-scale solution suitable for an industrial-scale hydrogen economy. However, the presence of organic residuals can significantly influence the H₂ storage efficiency, as well as cushion gas performance, such as CO₂ and CH₄, injected to maintain healthy reservoir pressure. Thus, the H₂ storage efficiency and cushion gas selectivity were thoroughly investigated in this work based on H₂, CO₂, and CH₄ adsorption measurements using, for the first time, actual organic-rich carbonate-rich Jordanian source rock samples (TOC = 13 % to 18 …

Late Starts Leading To Native-Like Pronunciation In Second Language Acquisition, Antonio Losavio

Electronic Theses and Dissertations, 2020-2023

This study sought to investigate the self-perceived factors that led adult language learners, who acquired L2 after the critical period, to acquire native like pronunciation in their second language. Given the impact of accent and pronunciation on perceptions of a speaker's status, intelligence and/or competence, there exists a need for thoughtful and comprehensive research into why adult second language learners reach different outcomes in pronunciation attainment. A qualitative phenomenological design was employed to recruit adults who began learning English as an L2 after 12 years old but attained a native-like English accent. Participants recorded vocal samples that were presented with …

Investigation Of Ground Deformations And Vibrations Due To Impact Pile Driving: Measurements And Prediction Model, Berk Turkel

Electronic Theses and Dissertations, 2020-2023

Pile driving, a commonly used method for installing deep foundations, has gained prominence as a foundation solution to transfer structural loads to deep competent strata. However, this method of installation can generate noise, ground vibrations, and deformations. These effects pose risks to adjacent structures and buried utilities, jeopardizing the safety and serviceability of urban infrastructure. Researchers and public and private agencies have proposed many vibration limit criteria to avoid damage to infrastructure. However, these criteria for construction vibrations are not linked to the ground densification associated with repetitive and cumulative loadings in sandy soils. This dissertation focuses on developing a …

Amazonian Wetland Domestication: A Spatial Analysis Of Pre-Columbian Fish Weirs In Lowland Bolivia, Charlotte Robinson

Electronic Theses and Dissertations, 2020-2023

Recent archaeological studies show that pre-Columbian communities began modifying Southwestern Amazonia approximately 3,500 years ago. In lowland Bolivia, a recently mapped network of fish weirs in West Central Llanos de Mojos (WCM) demonstrates how ancient Mojeño groups built artificial earthworks to harness seasonal flooding and catch fish. In the eastern region of Baures, a similar complex of fish weirs has been studied since the 1990s, generating questions about how this system may function in a different hydrological and anthropogenic setting. Similarly, previous research within WCM has focused on the fields and forest islands that pre-Columbian populations built to elevate themselves …

An Exploration Of The Digital Technology Skills Important In The Workforce And The Digital Technology Preparation Of Individuals With Intellectual Disabilities In Inclusive Postsecondary Education Programs, Erika Moore

Electronic Theses and Dissertations, 2020-2023

This research study identifies the digital technology skills important for entry-level employees in the 21st-century workforce and assesses the digital technology preparation currently provided in Inclusive Postsecondary Education programs for students with intellectual disabilities. Digital technology skills were evaluated using the Digital Competence Conceptual Reference Model (2016). A survey was distributed to 100 U.S. employers to assess the digital technology skills in demand in the workforce. Inclusive Postsecondary Education programs were then evaluated to assess the digital technology skill preparation offered at 83 programs across the U.S. The results were analyzed to determine whether Inclusive Postsecondary Education programs are preparing …

The Effect Of Extended Reality On The Science Achievement Gap Between Students With And Without Disabilities, Shalece Kohnke

Electronic Theses and Dissertations, 2020-2023

A science achievement gap between students with disabilities (SWD) and students without disabilities continues to persist, impacting academic and occupational outcomes. Traditional science instruction and the abstract nature of science concepts are a barrier to science achievement for students with disabilities. The current research study examined the effect of extended reality (XR; Browser-based 360° virtual reality) on closing the science achievement gap between students with and without disabilities in inclusive biology classrooms using a one group pretest-posttest design. The researcher expands on existing research by utilizing a larger sample size, with free and easily accessible XR technology implemented in 9th …

A Phenomenological Exploration Of Transfer Students' Experiences With Coaching And Advising At A Large Metropolitan Research University, Mirvate El Jerdi

Electronic Theses and Dissertations, 2020-2023

The number of students transferring from state colleges to state universities in Florida is significant due to the articulation agreements that are supported by the Board of Governors. These agreements allow students who have completed an associate degree to transfer their credits toward a bachelor's degree at a state university. However, transfer students face numerous barriers including academic, financial, and personal that hinder their success as they transition and start their first year at the state university. A large metropolitan public university in Florida has implemented success coaching, a new model of holistic student support, and advising services to provide …

A Phenomenological Inquiry On How Social Markers Inform Preservice Elementary Teachers Science Teacher Identity Through The Lens Of Positionality, Katherine Cruz-Deiter

Electronic Theses and Dissertations, 2020-2023

This qualitative study explores the lived experiences of preservice elementary teachers (PSETs) in a teacher preparation course and the factors that informed their science teacher identity. The theoretical framework used was phenomenology, and the study addresses under researched undergraduate preservice elementary teachers within teacher preparation courses with no teaching experience. Methods included participant survey, semi structured interviews, and a card sort activity. Analysis was conducted with basic statistical methods for the quantitative data, and coding followed by creating themes for the qualitative data. Findings reveal that the responses (n=28) to an open question survey report 21 PSETs did not identify …

Efficient Convolutional Neural Networks For Image Classification And Regression, Muhammad Tayyab

Electronic Theses and Dissertations, 2020-2023

Neural networks have been a topic of research since 1970s and the Convolutional Neural Networks (CNNs) were first shown to work well for hand written digits recognition in 1998. These early networks were however still shallow and contained only a few layers. Moreover these networks were mostly trained on a small amount of data in contrast to the modern CNNs which contain hundreds of convolution layers and are trained on millions of images. However, this recent shift in machine learning comes at a cost. Modern neural networks have extremely large number of parameters and require huge amount of computations for …

A Study Of The Performance Of Wind Turbines Fitted With Sprayed Liquid Flaps, Alexander Spitzer

Electronic Theses and Dissertations, 2020-2023

Lift generating technologies are often considered a potential solution to increased power generation and reliability within wind turbine design. The Sprayed Liquid Flap (SLF) is a novel active control method that has shown success in providing lift generation on aircraft wings, but its application in the context of rotating flows is unexplored. This research aims to understand the effects of the SLF on a wind turbine and provide a pathway for future exploration of its aerodynamic impacts on rotating flows. Computational Fluid Dynamics with an Euler-Euler multiphase approach is employed to assess the influence of the SLF on a wind …

Performance Comparison Of Low-Cost Sensors Across Six Cities Of Continental United States, Md Hasibul Hasan

Electronic Theses and Dissertations, 2020-2023

In the field of air quality measurement, low-cost sensors have been extensively used for capturing high-resolution spatial and temporal pollutant concentrations. However, data accuracy and the impact of environmental conditions particularly temperature and relative humidity, remain a significant issue. Careful sensor calibrations against reference instruments are necessary for ensuring data accuracy and validity. This study investigated the effectiveness of multiple calibration methodologies (linear calibration, 3rd order polynomial calibration, and Random Forest, RF) for low-cost air quality sensor calibration across six cities (Atlanta, Portland, Riverside, Sacramento, New York City, and Phoenix) in the United States. The data for this study is …

Trajectory Design Optimization Using Coupled Radial Basis Functions (Crbfs), Kyler Roy

Electronic Theses and Dissertations, 2020-2023

Optimal trajectory design has been extensively studied across multiple disciplines adopting different techniques for implementation and execution. It has been utilized in past space trajectory missions to either optimize the amount of fuel spent or minimize the time of flight to meet mission requirements. Coupled Radial Basis Functions (CRBFs) are a new way to solve these optimal control problems, and this thesis applies CRBFs to spacecraft trajectory optimization design problems. CRBFs are real-valued radial basis functions (RBFs) that utilize a conical spline while also not being affected by the value of the shape parameter. The CRBF approach is applied to …

Planeswalking: Magic: The Gathering Across Analog And Digital Platforms, Jack Murray

Electronic Theses and Dissertations, 2020-2023

This dissertation analyzes the relationship between Wizards of the Coast's trading card game Magic: The Gathering and its digital adaptations. I used critical technocultural, ludic discourse analysis, and ludic textual analysis to examine the analog trading card game and digital adaptations. I examined an archive of paratextual media including trade magazines, developer blogs, game reviews, and player guides. I chose Magic for its long history, impact on the analog game industry, and the sheer number of adaptations that have been produced. This analysis begins by introducing a method for describing analog to digital adaptations called Adaptation Mapping. Adaptation mapping describes …