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Nine Students From Across The U.S. Spent The Summer Completing Semiconductor Research At Ud Through Nsf Reu Program, University Of Dayton

Blog: The Dayton Engineer

Nine undergraduate students from universities across the U.S. spent their summer at the University of Dayton through the National Science Foundation’s Research Experiences for Undergraduate Students (REU) program under grant #2244146.

In Memoriam: Cordell Hull ‘56, ‘57, University Of Dayton

Blog: The Dayton Engineer

Cordell Hull, UD engineering alumnus, emeritus member of the board of trustees and long-time benefactor, passed away on December 26, 2022 at the age of 89.

National Science Foundation Grant To Help Researcher Improve Data Storage Capability, University Of Dayton

News Releases

A University of Dayton researcher has secured $540,000 from the National Science Foundation (NSF) to aid his quest to find better ways to store and read the increasing amount of information in the world.

Heavy Metals Within The Hawaiian Islands Archipelago As Evidenced In The Hawaiian Monk Seal And Their Prey, Yvanna M. Strait

All HCAS Student Capstones, Theses, and Dissertations

The Hawaiian monk seal (HMS) is an endangered, endemic seal native to the Northwestern Hawaiian Islands (NWHI). During the 21^st century, members of the HMS population have established residency within the Main Hawaiian Islands (MHI). This habitat shift may increase exposure of the animals to greater anthropogenic (urban industrialization, agricultural practices, and military activity) and natural (volcanic activity) heavy metal contaminants. Induced coupled plasma mass spectroscopy (ICPMS) analysis compared 16 heavy metal concentrations in HMS bone segregated by region, age, and sex. In additions, metal concentrations from potential prey items from the southern extent of the Northwestern Hawaiian Islands …

Hesi A2 Predictability Of Student Success, Cindy Smith

Doctor of Nursing Practice Projects

The nursing shortage has been linked to student retention and success in nursing education. Arkansas State University Beebe’s (ASUB) Practical Nursing program has experienced poor retention of students, which has indirectly affected the staffing of community healthcare partners. According to Twidwell et al. (2018), the Health Education Systems Incorporated Admission Assessment (HESI A2) positively correlated to student success. The ASUB nursing program acceptance protocol consists of ranking applicants related to HESI A2 composite scores without benchmark scores. Therefore, this Quality Improvement Project’s purpose was to determine if the students admitted to the program with a composite score of 75% or …

More Is Better Than One: The Effect Of Ensembling On Deep Learning Performance In Biochemical Prediction Problems, Jacob A. Stern

Theses and Dissertations

This thesis presents two papers addressing important biochemical prediction challenges. The first paper focuses on accurate protein distance predictions and introduces updates to the ProSPr network. We evaluate its performance in the Critical Assessment of techniques for Protein Structure Prediction (CASP14) competition, investigating its accuracy dependence on sequence length and multiple sequence alignment depth. The ProSPr network, an ensemble of three convolutional neural networks (CNNs), demonstrates superior performance compared to individual networks. The second paper addresses the issue of accurate ligand ranking in virtual screening for drug discovery. We propose MILCDock, a machine learning consensus docking tool that leverages predictions …

Federal Climate Policy Successes: Co-Benefits, Business Acceptance, And Partisan Politics, Roger Karapin, David Vogel

Publications and Research

While most literature on federal climate change policies has focused on failures to adopt broad policies, this article describes and explains successes in two important sectors. Regulations to improve the fuel economy of motor vehicles and efficiency standards for appliances and equipment have produced substantial reductions in greenhouse gas emissions although they largely have other goals and hence can be considered implicit climate policies.

We synthesize existing literature with our analyses of case studies to offer three explanations for the adoption of effective sectoral policies in these two sectors. First, the policies delivered politically popular co-benefits such as reducing consumers’ …

Evaluating The Osteogenic Potential Of Raspberry Ketone And Simvastatin Dual-Loaded Electrospun Chitosan Membranes On Preosteoblasts, Matthew T. Atwill

Electronic Theses and Dissertations Archive

This study evaluated the osteogenic potential of dual-loading raspberry ketone (RK) and simvastatin (SMV) onto electrospun chitosan membranes (ESCMs) to impart bioactivity onto guided bone regeneration (GBR) membranes and give them a more active role in osteodifferentiation. In this study, W-20-17 cells in media exposed to 12-100µg/ml RK in combination with 75-150ng/ml SMV resulted in increased basal alkaline phosphatase (ALP) expression, whereas RK groups alone had no effect on ALP expression. Additionally, there was a dose-dependent combinatory cytotoxic effect in which SMV in combination with increasing concentrations of RK resulted in decreased viability and vice versa. RK+SMV combinations were loaded …

Analyzing The Impact Of Process-Oriented Technology In Programming Education, Kate Arendes

Theses

Currently, there exist several factors in programming education that deter novice programmers. Computer science students are often significantly penalized for programs that do not compile, reflecting how current teaching standards are focused on the product of the student’s efforts, rather than the independent pieces of code that would otherwise execute properly. Novice programmers struggle with interpreting error messages that identify where and why a program failed, but are written with the assumption that the author already has mastered the fundamental concepts that they are trying to implement. In the classroom, educators may show presentations with pre-written code or perform live …

Commissioning The Tomographic Ionized-Carbon Mapping Experiment, Benjamin James Vaughan

Theses

Line intensity mapping is a novel technique that traces the evolution of cosmological structure sourcing a particular emission line through measurements of the aggregate emission of all galaxies along a line of sight. The Tomographic Ionized-carbon Mapping Experiment (TIME) is a far infrared waveguide imaging spectrometer that operates from 183-323 GHz, allowing it to trace the emission of the singly ionized carbon fine structure line ([CII], 157.7 µm) from redshift 5 to 9 to probe the infrared emission from star formation during the Epoch of Reionization. Further, TIME will also perform line intensity mapping observations of several carbon monoxide rotational …

Visualizing A Thought-Actuated 3d Printed Prosthesis, Brett Walter

Theses

The e-NABLE Project has created a worldwide network of passionate volunteers who utilize 3D printing technology to provide prosthetic hands to individuals who may not otherwise be able to obtain one. Most of these recipients are children in underdeveloped countries who have suffered from Amniotic Band Syndrome (ABS) and cannot seek expensive medical prosthetics. ABS occurs when fibrous bands from the amniotic sac wrap tightly around a fetus’s extremities (most commonly fingers), restricting blood flow and ultimately resulting in complete amputation. The e-NABLE Project’s prosthesis utilizes the functional wrist and fingerless palm to push against the device, contracting the mechanical …

3d Computational Modeling Of Multiphase Phenomena In Boiling Heat Transfer, Winston O. James Iii

Theses

Boiling heat transfer is used in industrial processes, such as heat exchangers, nuclear reactors, and high-powered electronics. There is a need to generate effective heat dissipation techniques to increase the operation limits of these technologies. To enhance heat dissipation with boiling flows, it is important to study boiling phenomena from a fundamental perspective to identify the relation between the fluid and heat transfer behavior near the interface during bubble growth. Boiling simulations have been used as a tool to visualize and quantify the heat transfer mechanisms near the interface. However, challenges exist in modeling bubble growth with a sharp interface …

Unh To Lead Clean Energy Technical Assistance Partnership, Beth Potier

UNH Today Archive

No abstract provided.

Lanthorn, Vol. 58, No. 01, August 7, 2023, Grand Valley State University

Volume 58, August 7, 2023 - April 15, 2024

Lanthorn is Grand Valley State's student newspaper, published from 1968 to the present.

An Investigation Into The Application Of The Meijering Filter For Document Recapture Detection, John Magee, Stephen Sheridan Phd, Christina Thorpe Phd

Conference papers

The proliferation of mobile devices allows financial institutions to offer remote customer services, such as remote account opening. Manipulation of identity documents using image processing software is a low-cost, high-risk threat to modern financial systems, opening these institutions to fraud through crimes related to identity theft. In this paper we describe our exploratory research into the application of biomedical image algorithms to the domain of document recapture detection. We perform a statistical analysis to compare different types of recaptured documents and train a support vector machine classifier on the raw histogram data generated using the Meijering filter. The results show …

Inéire: An Interpretable Nlp Pipeline Summarizing Inclusive Policy Making Concerning Migrants In Ireland, Arefeh Kazem, Arjumand Younus, Mingyeong Jeon, Muhammad Atif Qureshi, Simon Caton

Articles

Reaching marginal and other migrant communities to elicit their political views and opinions is a well-known challenge. Social media has enabled a certain amount of online activism and participation, especially in societies with abundant multicultural identities. However, it can be quite challenging to isolate the voice of the migrant in English-speaking countries, especially with an abundance of content in English on social media. In this paper, we pursue a case study of Ireland’s Twitter landscape, specifically migrant and native activists. We present a methodology that can accurately ( >80% ) isolate the Irish migrant voice with as little as 25 …

An Occupant-Centric Energy Modeling And Simulation In Office Buildings, Seddigheh Norouziasl

LSU Doctoral Dissertations

Building energy use is highly sensitive to occupants’ energy-related behaviors, including their presence and interaction with different building systems. Modeling and simulation of occupants’ energy-related behavior play an essential role in accurately predicting building energy consumption. Simplifying occupancy parameters in building performance simulation tools can lead to discrepancies between the simulated and actual building energy performance. The main goal of this research is to simulate the occupants’ energy-related behavior in office buildings and utilize the occupancy data to accurately predict building energy performance. Our objective is to increase building energy efficiency and reduce energy consumption while ensuring occupants' comfort, especially …

Metabolic Liver Cancer: Associations Of Rare And Common Germline Variants In One-Carbon Metabolism And Dna Methylation Genes, Samuel O Antwi, Michael Heckman, Launia White, Irene Yan, Vivekananda Sarangi, Joseph Reddy, Swathi Veliginti, Ellis D Mejías Febres, Rikita I Hatia, Ping Chang, Laura Izquierdo-Sanchez, Loreto Boix, Angela Rojas, Jesus M Banales, Maria Reig, Per Stål, Manuel Romero Gómez, Amit G Singal, Donghui Li, Manal M Hassan, Lewis R Roberts, Tushar Patel

Faculty, Staff and Student Publications

Animal studies implicate one-carbon metabolism and DNA methylation genes in hepatocellular carcinoma (HCC) development in the setting of metabolic perturbations. Using human samples, we investigated the associations between common and rare variants in these closely related biochemical pathways and risk for metabolic HCC development in a multicenter international study. We performed targeted exome sequencing of 64 genes among 556 metabolic HCC cases and 643 cancer-free controls with metabolic conditions. Multivariable logistic regression was used to calculate odds ratios (ORs) and 95% confidence intervals (CIs), adjusting for multiple comparisons. Gene-burden tests were used for rare variant associations. Analyses were performed in …

Quantitative Flow Ratio As A Continuous Predictor Of Myocardial Infarction, Miao Chu, Zhongwei Sun, Kefei Dou, Shengxian Tu, Lei Song, Shubin Qiao, Bo Xu

Faculty, Staff and Student Publications

Background: The quantitative flow ratio (QFR) identifies functionally ischaemic lesions that may benefit more from percutaneous coronary intervention (PCI) than from medical therapy.

Aims: This study investigated the association between QFR and myocardial infarction (MI) as affected by PCI versus medical therapy.

Methods: All vessels requiring measurement (reference diameter ≥2.5 mm and existence of at least one stenotic lesion with diameter stenosis of 50-90%) in the FAVOR III China (5,564 vessels) and PANDA-III trials (4,471 vessels) were screened and analysed for offline QFR. The present study reported clinical outcomes on a per-vessel level. Interaction between vessel treatment and QFR as …

Metabolic Liver Cancer: Associations Of Rare And Common Germline Variants In One-Carbon Metabolism And Dna Methylation Genes, Vivekananda Sarangi, Kimberly P Lauer, Joseph Reddy, Fowsiyo Ahmed, Swathi Veliginti, Ellis D Mejías Febres, Rikita I Hatia, Ping Chang, Laura Izquierdo-Sanchez, Loreto Boix, Angela Rojas, Jesus M Banales, Maria Reig, Per Stål, Manuel Romero Gómez, Amit G Singal, Donghui Li, Manal M Hassan, Lewis R Roberts, Tushar Patel

Faculty, Staff and Student Publications

Animal studies implicate one-carbon metabolism and DNA methylation genes in hepatocellular carcinoma (HCC) development in the setting of metabolic perturbations. Using human samples, we investigated the associations between common and rare variants in these closely related biochemical pathways and risk for metabolic HCC development in a multicenter international study. We performed targeted exome sequencing of 64 genes among 556 metabolic HCC cases and 643 cancer-free controls with metabolic conditions. Multivariable logistic regression was used to calculate odds ratios (ORs) and 95% confidence intervals (CIs), adjusting for multiple comparisons. Gene-burden tests were used for rare variant associations. Analyses were performed in …

Green Infrastructure Intervention To Improve Waste And Water System In Urban Areas, Muthiah Hakim Hadini, Farah Bulqis Muzakar, Nurlina Yustiningrum, Nicole Hall, Peicong Li, Freya Ward, Ova Candra Dewi, Coriesta Dian Sulistiani, Andrew Flynn

Smart City

The increase in waste generation and water use in urban areas may lead to local flooding that is dangerous for health if it is not appropriately managed by waste and water systems in urban infrastructure. Sponge City is a concept that utilizes Green Infrastructures (GIs) to manage waste and water systems while still maintaining open and public spaces function. This study aims to review the waste and water infrastructure systems in Depok, Indonesia which are compared with Gainesville in the United States, America and Cardiff, United Kingdom, to give recommendations for preventing flooding in urban areas. Analysis is done by …

Development Of A Kmno4 Catalyst-Infused Fuel Grain For H2o2 Hybrid Thruster Ignition Enhancement, Ryan Thibaudeau, Stephen A. Whitmore

Small Satellite Conference

Utah State University's patented High Performance Green Hybrid Propulsion (HPGHP) technology leverages unique dielectric breakdown properties of 3D-printed acrylonitrile butadiene styrene (ABS), allowing re-start, stop, and reignition. HPGHP works most reliably using gaseous oxygen (GOX) as the oxidizer but has experienced ignition reliability and latency issues when replaced high test hydrogen peroxide (HTP), which has a significantly higher storage density. This deficiency results from HTP's high decomposition energy barrier. Traditionally, inline external catalyst beds or GOX pre-lead burns are used to overcome this energy barrier to achieve ignition; however, the extra hardware required for these systems have inhibited their adoption …

Who The Hell Is Helen Of Sparta?, Nyssa Gilkey

Online Midwinter Seminar (OMS)

The rising popularity of Greek mythology is due in some part to female authors such as Madeline Miller and Natalie Haynes lending a fresh perspective to the Homeric tradition. However, these female authors tend to actually reduce the importance of one of the most important female characters of the Trojan War: Helen. Helen of Sparta has been an enigma to writers throughout the last 3000 years, her story changing with each iteration and era. Since Homer’s Iliad, the most beautiful woman in the world has been victim and villain, strong and weak willed. She has chosen husbands, and been …

Thermal And Radiation Design Considerations For Cubesats In Low Lunar Orbit, Bruno Mattos, Lucas Anderson, Randy Jost, Charles Swenson, Denis Vieira, Renan Menezes

Small Satellite Conference

NASA's Artemis program is turning the attention back to the Moon. As an example of Artemis I, CubeSats can now be inserted into lunar orbits by ridesharing. Designers must become familiarized with the additional technical challenges of operating far away from the usual low Earth orbit (LEO) condition, especially regarding the lunar radiation and thermal environments. This paper analyzes the thermal environment loads for a spacecraft operating in a low lunar orbit (LLO) at 100km altitude with a fixed nadir-pointing orientation. A simplified thermal model is presented to assess the impact of the surfaces' thermal-optical properties and internal thermal resistances …

Lessons Learned From Operations Planning And Preparation For Equuleus Launched Toward The Moon By Sls Artemis-1, Shintaro Nakajima, Yosuke Kawabata, Ryota Fuse, Ryu Funase

Small Satellite Conference

EQUULEUS (EQUilibriUm Lunar-Earth point 6U Spacecraft) will be the world's smallest spacecraft to explore around the Earth–Moon Lagrange point, which was launched on November 16, 2022, by NASA's SLS (Space Launch System) Artemis-1. The primary mission of spacecraft is a trajectory control experiment, and its objective is to develop and demonstrate trajectory control techniques within the Sun-Earth-Moon region by flying to a libration orbit around the Earth-Moon Lagrange point L2 (EML2) along a low-energy transfer. EQUULEUS must perform a maneuver before the lunar flyby to stay within the Sun-Earth-Moon region. To perform DV1, we need to calculate and optimize the …

Autonomous Docking System For Assembly And Reconfiguration In Space For Small Satellites, Atheel Redah, Felix Sittner, Saurav Paudel, Sergio Montenegro

Small Satellite Conference

As the number of orbiting satellites has rapidly increased in the last few years, the need of space elements that can perform autonomous rendezvous and docking maneuvers with other orbiting elements for different application such as self-assembly and reconfiguration in space are become more pressing. The TAMARIW project is intended to demonstrate such capability for small satellites. This paper describes the project and the modules being developed to realize its objectives at the time of writing. It will also present the technologies and systems intended to be used for performing safe autonomous undocking/docking maneuvers. Additionally, the testing platforms being built …

Space Demonstration Of Two-Layer Pop-Up Origami Deployable Membrane Reflectarray Antenna By 3u Cubesat Origamisat-2, Gen Nakayama, Motoki Moritani, Takashi Tomura, Hiraku Sakamoto, Shuhei Koike, Taichi Oshino, Yoshiki Mitsumoto, Kazuki Nagai, Sora Kanamaru, Takumi Sato, Haruki Kurokawa, Soma Saito, Atsuki Ochi, Delburg Mitchao, Shinya Tamura, Yuki Takeda, Toranosuke Yanagi, Koichi Kidani, Kota Toyoda, Suk So Yeon, Mitsuhiko Yasuhara, Koudai Suzuki, Riku Maeda, Sota Kume, Atsushi Shirane, Kenichi Okada

Small Satellite Conference

3U CubeSat OrigamiSat-2 demonstrates a 50-cm × 50-cm two-layer pop-up Origami deployable membrane reflectarray antenna in space. The membrane has small stowage volume and high gain even though it has low flatness because of a large enough antenna area to cover its un-flatness. C-band transmitter is equipped in the CubeSat and offers 20-Mbps amateur satellite communication. In 3U size, a 1-m length deployable gravity gradient mast and magnetic torquer are equipped to stabilize and control its attitude. A camera is attached to the satellite to measure the shape of the membrane antenna. OrigamiSat-2 was selected as the Innovative Satellite Technology …

Windform® Xt 2.0 Use As 3u Cubesat Primary Structure, Amanda Stark, Andrew Paddock, Thuan Nguyen, Kurt Woodham

Small Satellite Conference

CubeSats provide a platform for small-scale space research and technology demonstration at reduced complexity, cost, and development time. These advantages drove the NASA Langley Research Center (LaRC) to develop and launch the GPX2 3U CubeSat to explore the viability of using Commerical Off-The-Shelf (COTS) differential Global Position System (dGPS) in low earth orbit. To reduce manufacturing costs and increase design flexibility, the project chose additive manufactured Windform® XT 2.0 as the primary bus material rather than traditional subtractive manufactured (milled) metal. The bus is a two-part, Selective Laser Sintered, 3D-print structure consisting of a single-piece, five-walled chassis and single-walled cover. …

The Lightsail 2 Solar Sailing Mission Summary, David A. Spencer, John M. Bellardo, Bruce Betts, Justin Mansell, Barbara Plante

Small Satellite Conference

The LightSail 2 mission concluded a 3-year mission in November 2022, having successfully demonstrated controlled solar sailing in low-Earth orbit using a CubeSat platform. Flight data show that LightSail 2 successfully controlled its orientation relative to the Sun, with sustained periods of apogee raising and increasing orbital energy. The LightSail 2 solar sail was 5.6 m on a side and has a total deployed area of 32 m². Four independent triangular aluminized Mylar® sail sections 4.6 microns thick were Z-folded and stowed into four sail bays. The sail segments were deployed by four 4 m Triangular Retractable And Collapsible booms …

The First Chilean Satellite Swarm: Approach And Lessons Learned, Cristobal Garrido, Elías Obreque, Matias Vidal-Valladares, Samuel Gutierrez, Marcos Diaz Quezada, Carlos Gonzalez, Camilo Rojas, Tamara Gutierrez

Small Satellite Conference

SUCHAI 2, SUCHAI 3, and Plansat are three 3U CubeSats designed, manufactured, integrated, and tested by the Space and Planetary Exploration Laboratory at the University of Chile (SPEL). They were launched into space on April 1, 2022, aboard a D-Orbit ION platform. The ION deployer was carried into space on the SpaceX Falcon 9 Transporter 4 mission. The nanosatellites included payloads and experiments from several other national and international groups, all featuring different missions and configurations.

We developed the three CubeSats simultaneously. Some subsystems are the same, while others are specific to each satellite. They include scientific and technical payloads. …