Digital Commons Network^™

Event-Based Obstacle Detection With Commercial Lidar, Chaz Cornwall

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Computerized obstacle detection for moving vehicles is becoming more important as vehicle manufacturers make their systems more autonomous and safe. However, obstacle detection must operate quickly in dynamic environments such as driving at highway speeds. A unique obstacle detection system using 3D changes in the environment is proposed. Furthermore, these 3D changes are shown to contain sufficient information for avoiding obstacles. To make the system easy to integrate onto a vehicle, additional processing is implemented to remove unnecessary dependencies. This system provides a method for obstacle detection that breaks away from typical systems to be more efficient.

Temperature Dependent Density Of States Models And Compiled Data For Radiation Induced Conductivity, Jodie Gillespie

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Radiation Induced Conductivity (RIC) is the change in conductivity of a material due to bombardment from incident high energy radiation. RIC has consistently been found to follow a standard power law relation, 𝜎_𝑅𝐼𝐶(𝑇) = 𝑘_𝑅𝐼𝐶(𝑇)Ḋ^∆(𝑇), between conductivity, 𝜎_𝑅𝐼𝐶 and adsorbed dose rate, Ḋ. 𝑘_𝑅𝐼𝐶(𝑇) and ∆(𝑇) are material dependent parameters. Previous RIC models were developed in the 𝑇 → 0 limit. Now expanded models are developed in the low temperature limit (within a few 𝑘_𝐵𝑇 of the effective Fermi level) by approximating the Fermi-Dirac equation within a …

River Response To Sediment Supply: The Sand Bed Case, Christina M. Leonard

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Effective management of in-channel and floodplain habitat requires an ability to forecast river response to changes in water and sediment supply. These changes may result from dam construction/decommissioning, changes in reservoir operations, or changes in grazing or forestry practices. If a change in water and sediment supply causes sediment to be delivered faster than the channel’s capacity to transport it, sediment will accumulate in the reach, leading to changes in channel form and increasing the potential for flooding. A decrease in sediment supply relative to transport capacity can lead to channel incision. The extent and timing of sediment accumulation or …

Estimating The Effects Of Forms Of Computer-Based Scaffolding In Problem-Centered Stem Instruction, Mason Reed Lefler

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Much like Post-Sputnik 1950s era there is a lot of interest in making sure that United States does not fall behind in Science, Technology, Engineering, and Mathematics (STEM) education. STEM learners are often presented with complex problems to solve both as part of their education and their work. Engineering education suffers from student dropout often due to how difficult it is to support students through solving problems. This dissertation is a close look at computer-based scaffolding, a method of supporting learners during problem solving through computer software. The first paper in this dissertation examines and resolves some of the debate …

Context And Content Of Teaching Conversations: Exploring How To Promote Sharing Of Innovative Teaching Knowledge Between Science Faculty, A. Kelly Lane, Brittnee Earl, Stephanie Feola, Jennifer E. Lewis, Jacob D. Mcalpin, Karl Mertens, Susan E. Shadle, John Skvoretz, John P. Ziker, Marilyne Stains, Brian A. Couch, Luanna B. Prevost

School of Biological Sciences: Faculty Publications

Background: Change strategies may leverage interpersonal relationships and conversations to spread teaching innovations among science faculty. Knowledge sharing refers to the process by which individuals transfer information and thereby spread innovative ideas within an organization. We use knowledge sharing as a lens for identifying factors that encourage productive teaching-related conversations between individuals, characterizing the context and content of these discussions, and understanding how peer interactions may shape instructional practices. In this study, we interview 19 science faculty using innovative teaching practices about the teaching-focused conversations they have with different discussion partners.

Results: This qualitative study describes characteristics of …

Late Quaternary Biotic Homogenization Of North American Mammalian Faunas, Danielle Fraser, Amelia Villaseñor, Anikó B. Tóth, Meghan A. Balk, Jussi T. Eronen, W. Andrew Barr, A. K. Behrensmeyer, Matt Davis, Andrew Du, J. Tyler Faith, Gary R. Graves, Nicholas J. Gotelli, Advait M. Jukar, Cindy V. Looy, Brian J. Mcgill, Joshua H. Miller, Silvia Pineda-Munoz, Richard Potts, Alex B. Shupinski, Laura C. Soul, S. Kathleen Lyons

School of Biological Sciences: Faculty Publications

Biotic homogenization—increasing similarity of species composition among ecological communities—has been linked to anthropogenic processes operating over the last century. Fossil evidence, however, suggests that humans have had impacts on ecosystems for millennia. We quantify biotic homogenization of North American mammalian assemblages during the late Pleistocene through Holocene (~30,000 ybp to recent), a timespan encompassing increased evidence of humans on the landscape (~20,000–14,000 ybp). From ~10,000 ybp to recent, assemblages became significantly more homogenous (>100% increase in Jaccard similarity), a pattern that cannot be explained by changes in fossil record sampling. Homogenization was most pronounced among mammals larger than 1 …

December 2022 Table Of Contents Newsletter - Scholarly Communication, Victoria Peters, Kayla Birt Flegal

Table of Contents Newsletter

This month's DePauw University Libraries newsletter surrounds the service of Scholarly Communication. We feature the library's open access statement, open access publishing, and meet the Scholarly Communication and Resource Services Librarian, Victoria Peters.

Modeling Polar Cap Airglow Patch Intensities Using Three-Dimensional Ionospheres Produced By Data Assimilations, Michael R. Negale, J. V. Eccles, J. M. Holmes, S. V. Fridman, L. J. Nickisch

Space Dynamics Laboratory Publications

Discrete high density plasma structures in the Earth’s ionosphere that convect across the polar cap from the dayside to nightside are known as polar cap patches. Patches can interfere and disrupt satellite and HF communications, and therefore, accurate forecasting and modeling of this phenomenon would be greatly beneficial. In this study we have utilized the Global Positioning System Ionospheric Inversion (GPSII) data assimilation model using electron density measurements from the northward looking Resolute Bay Incoherent Scatter Radar (RISR-N) and total electron content (TEC) from ground based Global Navigation Satellite System (GNSS) receivers to reconstruct the high latitude ionosphere. From the …

Framework For The Use Of Extended Reality Modalities In Aec Education, Barbara Oliveira Spitzer, Jae Hoon Ma, Ece Erdogmus, Ben Kreimer, Erica Ryherd, Heidi Diefes-Dux

Department of Agricultural and Biological Systems Engineering: Faculty Publications

The educational applications of extended reality (XR) modalities, including virtual reality (VR), augmented reality (AR), and mixed reality (MR), have increased significantly over the last ten years. Many educators within the Architecture, Engineering, and Construction (AEC) related degree programs see student benefits that could be derived from bringing these modalities into classrooms, which include but are not limited to: a better understanding of each of the subdisciplines and the coordination necessary between them, visualizing oneself as a professional in AEC, and visualization of difficult concepts to increase engagement, self-efficacy, and learning. These benefits, in turn, help recruitment and retention efforts …

Dual-Band Circularly Polarized Shared Aperture Antenna For Cubesat Communication System, Syed Salman Kabir

Graduate Theses and Dissertations (2019 - present)

For space exploration, a special class of small satellite known as CubeSat, has become popular in academia and industry in recent years. Due to its low cost and short development time, researchers prefer CubeSat over large-scale satellites wherever possible. In academia, CubeSat has major applications in the field of space atmosphere, space-to-ground communication, weather forecasting, etc. Like other spacecrafts, CubeSat uses multiple antennas in different frequency bands to establish a communication link with ground stations. Recent CubeSat missions are generating a large amount of data which cannot be downlinked using conventional antennas. The demand for a compact antenna system that …

Reaching Syrians In Need: An Analysis Of Humanitarian Aid In The 21st Century., James Clark

Electronic Theses and Dissertations

The objective of this dissertation is two-fold. One is to critically consider humanitarian aid delivery to and through Syria via a lens that combines the humanities and social sciences. The fields of anthropology, political science and postcolonialism are employed to accomplish this. The second is to investigate the process involved in this delivery amid the country’s ongoing conflict. Combining these two facets provides a view of humanitarian aid as it relates to the conflict in Syria while applying a liberal arts-humanities approach. The introduction establishes the basis to discuss the existence of aid providers and those in need of aid …

Smartphone Detector, Ryan Coldiron

Electrical Engineering

There is a wide variety of times when it is unacceptable to be using a smartphone, and this device could help to minimize when people are using their devices. People have become more and more reliant on their various pieces of technology such as their smartphones, and are often using them when they should be paying attention in class, attending an important meeting, watching a movie, or should just be present to their other surroundings. A device that could detect the use of smartphones at these inopportune times would be something that would benefit a wide variety of people.

The …

Diy Cell Incubator, Hayden James Jeanor

Electrical Engineering

The purpose of creating a cell Incubator is for the development of cell and tissue production in laboratory settings. Large scale research projects and the medical community grow cells for various reasons, including experiments and creating tissue for patients. However, they cannot simply depend on growing cells in a petri dish that sit on a rack at room temperature. To grow heathy cells in the fastest way possible, they use cell incubators. Cell incubators create an atmosphere within the incubation bay that is designed to promote cell growth. The three main components that need to be constantly regulated, using a …

Fridge/Freezer Temperature And Power Wireless Alert System, Peter M. Nelson

Electrical Engineering

In this document is a design, build, and application of a new system to help reduce the problem of lost or tainted samples and experiments held in fridges and freezers.

Guitar Note Analyzer - Picking Patterns & Scales, Tamara Lynn Houalla

Electrical Engineering

The Guitar Note Analyzer helps beginner-to-intermediate guitar players advance their playing skills. The project detects the successive picks of guitar strings in real time at a rate of two notes per second. The device detects the frequency of notes played within the range of 50Hz – 1.5KHz. The hardware – microphone sensor, amplification circuitry, and microcontroller - is secured inside the sound hole of the user’s guitar. The hardware extends out of the guitar and connects to the user’s laptop via a USB cable. This allows relevant information to be displayed live to the user on their monitor, and to …

Liability For Public Deception: Linking Fossil Fuel Disinformation To Climate Damages, Jessica A. Wentz, Benjamin Franta

Sabin Center for Climate Change Law

Over two dozen U.S. states and municipalities have filed lawsuits against fossil fuel companies, seeking abatement orders and compensation for climate damages based on theories such as public nuisance, negligence, and failure to warn, and alleging these companies knew about the dangers of their products, intentionally concealed those dangers, created doubt about climate science, and undermined public support for climate action. This Article examines how tort plaintiffs can establish a causal nexus between public deception and damages, drawing from past litigation, particularly claims filed against manufacturers for misleading the public about the risks of tobacco, lead paint, and opioids. A …

Academic Commons Annual Report (2021-2022), Elizabeth D'Angel

Annual Reports & Administrative Documents

Contents

• Introduction & By the Numbers
• Updates at the Jefferson Libraries & Library Statistics
• Instructional Design & Educational Technologies By the Numbers
• Professional Writing and Communications
• Textile & Costume Collection
• AV, Graphics, Video Production, and Photography
• Staff Highlights

Optimizing Diabetes Self-Management Using Continuous Glucose Monitoring And Improving The Transition Of Care For Adult Patients Discharged From The Hospital, Nikki Rose Angeles

Doctor of Nursing Practice

Background: Diabetes mellitus is a chronic medical condition that affects more than 34 million Americans (Centers for Disease Control and Prevention, 2020). The financial impact of diabetes is significant. Americans spend $327 billion on direct medical costs to treat the disease and its associated complications (American Diabetes Association, 2018). The management of diabetes requires a multidisciplinary approach that involves healthcare providers, diabetes self-management support resources, and a high level of commitment from the patient. Patients with diabetes discharged from the hospital often receive fragmented and inconsistent information about managing their health issues. As they transition from hospital to home, their …

An Interprofessional Prediabetes And Diabetes Self--Management Education Quality Improvement Project Among Vulnerable Populations At A Tuberculosis Hospital, Robert Saul Castro Natal

Doctor of Nursing Practice

Background. Patients greatly benefit from diabetes self-management education (DSME) as it boosts knowledge and self-efficacy, decreases body weight, fasting blood sugar, and hemoglobin A₁C levels, and improves overall health outcomes in a cost-effective manner. Unfortunately, many individuals with prediabetes and diabetes who qualify for DSMEs do not attend these classes nor receive sufficient prediabetes and diabetes support elsewhere to attain guideline recommended metrics. However, individuals from vulnerable populations and without DSME education experience disproportionate diabetes-related complications worsening health outcomes. Aims: Increase general prediabetes and diabetes knowledge, facilitate behavior change, improve glycemic, metabolic, and lipid values, and increase …

Addressing Obstacles In Following Prescribed Medication Regimens In Patients With Type 2 Diabetes Mellitus, Cristina Sarro

Doctor of Nursing Practice

Background. Type 2 diabetes is the ninth leading cause of death in the United States. Micro/macro vascular complications are common in diabetes. Purpose. To implement an evidence-based protocol addressing obstacles for patients with type 2 diabetes in following their prescribed medication regimens to reduce glycosylated hemoglobin levels. Evidence. Failure to follow treatment plans increases diabetes complications. Perceptions and complexities of treatment plans, side effects of therapies, and cost contribute to patients not taking their medications as prescribed. Goals. To increase the number of patients with type 2 diabetes who follow their prescribed medication regimen and reach their targeted glycosylated hemoglobin. …

Implementing The Depression Screening Tool Phq-9 In The Annual Wellness Exam Of Concierge Family Medicine, Eric Iglesias

Doctor of Nursing Practice

Abstract

Background: Depression has been one of the most common mental health disorders that our population fact but is underdiagnosed and undertreated. Primary care providers are often the first line of defense in detecting depression. Because of this, implementing a depression screening tool in a primary care setting will improve holistic management of care and improve quality of life.

Project Aim: The aim of this project was to increase the number of clients who are evaluated for depression by using the PHQ-9 screening tool during their annual wellness exam and initiate treatment according to the Veteran’s Affairs/Department of Defense Depression …

Patient Care Management Of Hypertension Through Improving Follow-Up And Reducing Missed Appointments In A Primary Care Clinic: A Qi Project, Victoria Idubor

Doctor of Nursing Practice

Background. Missed follow-up appointments constitute significant problems clinics and health centers face nationwide. A significant portion of primary care providers’ patients will require follow-up appointments to manage their chronic illnesses. About 20 to 40% of patients seen at this clinic have a history of hypertension. Uncontrolled hypertension has been shown to increase the risk of certain cardiovascular disease events and mortality. Follow-up appointments are crucial for patients with hypertension to monitor for more life-threatening signs and manage their overall care. Purpose. The purpose of this project is to improve the timely management of care for patients with hypertension …

“Together We Arrived And Together We Shall Leave”: The Gouverneur Parents Association And The Politics Of Race And Disability In Postwar New York, Jorge A. Matos

Publications and Research

This essay documents the history of the Gouverneur Parents Association (GPA), a group of mostly Black and Latinx parents whose disabled children were institutionalized at the Gouverneur Division of the infamous Willowbrook State School in New York City. The GPA, in coalition with Black, Latinx, and White parents and activists, led a campaign during the 1970s and 1980s to close Willowbrook, then part of a national network of sites denounced by disability activists during the heyday of the deinstitutionalization movement. In this essay I argue that the postwar migration of Black and Latinx communities into New York City amid an …

Adult Home Range Size And Juvenile Movements Of Gray Hawks In The Lower Rio Grande Valley, Texas, Usa, Michael T. Stewart, William S. Clark, Brian A. Millsap, Brent D. Bibles, Timothy Brush

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

We studied the natural history of Gray Hawks (Buteo plagiatus) in the Lower Rio Grande Valley of Texas. We used GPS-GSM telemetry to quantify dispersal time and distance, winter home range size of juveniles, and home range size of adults. Home ranges were calculated using the kernel Brownian bridge home range estimator. The median dispersal date for 14 juvenile Gray Hawks was 11 August and they traveled a median straight-line distance of 453 km. Mean winter home range sizes for 11 juveniles was 707 ha. For juveniles, female winter home ranges were larger than those of males, and …

Uncovering Connections: Caqdas And Tropy For Art Historians And Archaeologists, Kayla C. Olson

Library Faculty Works

This article reports on a 2021 study that aimed to assess art historians’ and archaeologists’ familiarity with computer-assisted qualitative data analysis software (CAQDAS), so that academic librarians and visual resources professionals could begin to consider if access to and instruction on these tools might benefit their patrons in these disciplines. Initial findings from the study were presented at the Visual Resources Association 2022 Annual Conference. Scholarship concerning the information organization needs and practices of material culture researchers is limited but growing. Self-identified art historians, archaeologists, and object-based and material culture researchers were invited to take a survey disseminated through convenience …

Puerto Rico Left In The Dark, Again, Eulices Garcia

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Puerto Rico, the United States third largest island, often gets overlooked when hurricane season comes and goes. Where most of the attention goes to the Florida peninsula or East coast, Puerto Rico is still one of America’s closest territories. As part of America’s extended family, Puerto Rico should not be overlooked when natural disasters occur. When these disasters happen, they can have a tremendous impact on the island itself and the people in it. One major concern that has not been truly fixed yet is the energy crisis in Puerto Rico. Whenever storms hit, there is always a possibility of …

Implementing Oer At Laguardia Community College: Three Case Studies, Ian Mcdermott, Joshua P. Tan, Alioune Khoule, Marta Kowalczyk, Emma Handte, Rena D. Grossman

Publications and Research

LaGuardia Community College, City University of New York (CUNY) began receiving funds from a New York State Open Educational Resources (OER) grant in 2017. Since then, several departments have made significant strides in the implementation of OER. We offer three case studies of putting OER into practice, in math, astronomy, and chemistry. Each case study presents the context for OER conversion, the steps taken, early results from OER implementation, and the main takeaways. A common feature across courses and departments is a process-oriented implementation of OER, namely, one that is constantly improving and moving towards the goal of openness and …

Ancient Marine Sediment Dna Reveals Diatom Transition In Antarctica, Linda Armbrecht, Michael E. Weber, Maureen E. Raymo, Victoria L. Peck, Trevor Williams, Jonathan Warnock, Yuji Kato, Iván Hernández-Almeida, Frida Hoem, Brendan Reilly, Sidney Hemming, Ian Bailey, Yasmina M. Martos, Marcus Gutjahr, Vincent Percuoco, Claire Allen, Stefanie Brachfeld, Fabricio G. Cardillo, Zhiheng Du, Gerson Fauth, Chris Fogwill, Marga Garcia, Anna Glüder, Michelle Guitard, Ji Hwan Hwang, Mutsumi Iizuka, Bridget Kenlee, Suzanne O’Connell, Lara F. Pérez, Thomas A. Ronge, Osamu Seki, Lisa Tauxe

Department of Earth and Environmental Studies Faculty Scholarship and Creative Works

Antarctica is one of the most vulnerable regions to climate change on Earth and studying the past and present responses of this polar marine ecosystem to environmental change is a matter of urgency. Sedimentary ancient DNA (sedaDNA) analysis can provide such insights into past ecosystem-wide changes. Here we present authenticated (through extensive contamination control and sedaDNA damage analysis) metagenomic marine eukaryote sedaDNA from the Scotia Sea region acquired during IODP Expedition 382. We also provide a marine eukaryote sedaDNA record of ~1 Mio. years and diatom and chlorophyte sedaDNA dating back to ~540 ka (using taxonomic marker genes SSU, LSU, …

The Judicial System’S Unjust Relationship With Attorney-Client Privilege: How Judges Knowingly (And Erroneously) Abrogate Important Contractual Arrangements In Corporate Transactions, Edward S. Adams

Michigan Business & Entrepreneurial Law Review

A Delaware court has recently recognized the need to enforce contracts that delineate where the attorney-client privilege rests after an asset transfer. This Article will argue that courts across the country should recognize the important and legitimate reasons for this type of decision. Part I will review how the attorney-client privilege functions for corporations and how courts respect the importance of the privilege in other contexts. Part II will review the fundamental corporate changes in which these questions can arise and situations in which courts choose to recognize the importance of protecting the attorney-client privilege. Part III will argue that …

Closing The Auditor Loophole: Towards A More Perfect Work-Product Waiver Doctrine, Evan Mulbry

Michigan Business & Entrepreneurial Law Review

The Supreme Court created strong protections for the attorney’s thought processes and analysis in Hickman v. Taylor. However, the Court in Arthur Young & Co. created a loophole enabling opposing lawyers to access the lawyer’s thought processes and legal strategies. This loophole was created when the Court allowed discovery of an auditor’s tax workpapers, and lower courts then interpreted this decision to imply that disclosing information to the outside auditor constitutes a waiver of attorney work-product protections. This loophole can be corrected through a Congressional statute that impacts the Federal Rules of Evidence, which would protect communications between outside auditors …