Digital Commons Network^™

Measuring Plume Concentration Variations Under Neutral Atmospheric Conditions, Daniel Williams

Chemical Engineering Undergraduate Honors Theses

Hazardous gases are increasingly becoming a large safety concern as the world continues to grow and industrialize. The modeling of when hazardous gases breach containment is an extremely important objective of consequence assessment planning and response. To improve the understanding of the variability inherent in passive gas releases, a test program to demonstrate the variability of gas concentration measurements at different location in a passive gas plume released from an area source in the ultra-low speed wind tunnel at the Chemical Hazards Research Center. A Flame Ionization Detector was used to measure the concentration of the source cloud. Methane was …

Greenhouse Gas Emissions From Milk Production In The Us, Cailey Cooper

Chemical Engineering Undergraduate Honors Theses

Life cycle assessment is performed to determine the environmental impacts of the life cycle of a product. In this study, the greenhouse gas emissions from milk production in the United States were calculated using a cradle-to-gate analysis. The dairy industry has a noticeable impact on the total greenhouse gas emissions in the US. Performing life cycle assessment provides information about the main emission sources in the life cycle which can spark innovative changes to reduce these emissions. The life cycle assessment was performed using the openLCA software and ReCiPe impact assessment methodology. The results indicated that 1.28 kg of carbon …

Comparing Firocoxib And Meloxicam In The Application Of Microneedle Patch For Transdermal Drug Delivery, Ruohan Li

Chemical Engineering Undergraduate Honors Theses

This thesis compares the performance of meloxicam and firocoxib in the aspects of its physical characteristic, chemical compositions, and in-vitro performances for transdermal pain management microneedle patches on farm animals. The microneedle patches are composed of polyvinyl alcohol (PVA), type I collagen (COL), and chitosan (CHI) as base material that carries NSAIDs to achieve therapeutic purposes. Scanning electron microscopy (SEM) was utilized to observe the morphological and physical characteristics of the microneedle patches. Both meloxicam and firocoxib microneedle patches were successfully prepared using the methodology, with organized microneedle distribution and sizing. And Fourier transform infrared spectroscopy (FTIR) confirmed the chemical …

A Teaching Unit Plan For Introducing Engineering In 1st-2nd Grade Classrooms, Claudia Smith

Chemical Engineering Undergraduate Honors Theses

The field of engineering, and specifically chemical engineering, is projected to increase significantly over the next 10 years. Engineering programs require students to have a strong foundation of math and science. Students in the United States are often underprepared to enter these programs, and the majority of high school students are not interested in pursuing a career in the STEM field at all. For this project, a unit teaching plan was created to introduce students to the field of engineering, providing a foundation for their upper-level STEM classes, and encouraging them to consider engineering as a career in the future. …

Can Uruguay Have Its Steak And Eat It Too? "Greening" A Red Meat Economy, Michael Chepolis

Honors Theses

The methane emissions produced by Uruguay’s 12 million cattle drive the largest share of the country’s total greenhouse gas emissions. Livestock farming is a driver of Uruguay’s economy and an important part of their national identity and culture. Previous researchers have suggested that drastic changes to beef production and consumption habits are necessary to reduce the ecological impact of cattle ranching. This thesis investigates how Uruguay plans to deal with its reliance on beef production as it seeks to reduce its carbon emissions output. An analysis of Uruguay’s development strategy plans reveals that while the country aims to reduce the …

The Process And Flow Of Animation: For The Record, Dylan Gordon

Undergraduate Honors Theses

A comprehensive study in the processes of animation in various forms, from concept to simple layout animation to complex overlapping action and splining, and even lighting and texturing, I will be using a popular podcast musical as a basis to study the pipeline that’s used to create an industry animation.

“The Escapades Of Cat & Dog” The Process Of Creating A Children’S Book From Start To Finish, Cosette Simmons

Undergraduate Honors Theses

The focus of this thesis project was to learn and understand the amount of work that goes into children’s book illustration, as well as bringing the story of another’s to life. “The Escapades of Cat & Dog” was written by my grandfather, George Petrella, to tell the story of my mother and her sibling’s pets going on kooky adventures. The script was given to me back in 2017-2018 not to long after my grandmother, Jane Petrella, passed away due to cancer. The result consists of a 36 page 9 by 9 inch fully illustrated book intended to be …

Say His Name: Othello, Paul Robeson, And Racism In America, Brett Strother

Undergraduate Honors Theses

In Shakespeare’s Othello, Othello faces societal pressures of racism as he marries Senator Brabantio’s White daughter Desdemona. This creates the main plot, and the villain of the play, Iago, plots against him which leads to the destruction of Othello’s reputable character. Othello is transformed into a violent, murderous husband by Iago’s villainous ploy fueled by using racial slurs, and Othello’s final form matches the name his enemies assign him. Stripping Othello of his name and portraying him as “the Moor”, a term used to describe a category of Black persons viewed as barbaric, is a tactic used throughout time …

The Use Of A Therapeutic Robotic Seal To Facilitate Rehabilitation In The Pediatric Icu, Breanna D. Hetland, Christina Bach, Don W. Coulter, Haley Haefner, Jennifer M. Heusinkvelt, Sara Kinsella, Kevin A. Kupzyk, Alison Moody, Holly Roberts, Abigail Wawers

Posters and Presentations: College of Nursing

No abstract provided.

Enhancing Prediction Reliability Of Deep Learning By Data Confidence For Recommendation Systems: A Case Study On Named Entity Recognition, Prianka Banik

All Theses

Reliability is crucial for industrial recommendation systems. Recent advancement in deep neural networks has greatly improved the performance of modern recommendation systems. However, there is a lack of research on estimating how reliable such recommendation systems are in practical scenarios. Due to the blackbox nature of the deep learning-based systems, many times additional labor has to be involved to examine the prediction accuracy manually, which is costly and time-consuming. To address the problem, we propose a novel approach to estimate the model confidence for a deep learning-based recommendation system. Our approach utilized data statistics to improve the traditional model confidence …

How Does Having A Pet During The Coronavirus-19 Pandemic Among University Students Affect Anxiety And Depression, Sugey Gonzalez-Escobedo, Jessica Morales Sanchez

Electronic Theses, Projects, and Dissertations

This study examined whether having a pet among university and college students is associated with anxiety and depression during the Coronavirus-19 pandemic. A modified survey of a non-probability sample was conducted during a 5-month period during the Coronavirus-19 pandemic. A total of 115 students voluntarily participated and completed the survey. In the midst of the pandemic, students were forced to isolate themselves in their homes. This isolation may have caused anxiety and depression in students. However, a furry companion could have alleviated any anxiety/depression symptoms they may have endured during this time. This research contributes to the literature in regard …

Human Suspicious Activity Detection, Nilamben Bhuva

Electronic Theses, Projects, and Dissertations

The detection of suspicious human activity is a crucial aspect of ensuring public safety and security. The aim is to identify suspicious behavior. To accomplish this, we employ the LRCN, a long-term recurrent convolutional network, to detect anomalous activity. It is important to consider the temporal data of the video when classifying suspicious behavior, and the framework uses a combination of CNNs and RNNs to analyze video frames and extract relevant features. The key milestones of this project include conducting research, collecting and pre-processing data, designing and training the model, and evaluating its performance. The resulting detection system can accurately …

Trees Recommendation In Agroforestry Ecosystem Using Nlp, Omkar Sawant

Electronic Theses, Projects, and Dissertations

Agroforestry farming is one of the challenging sectors to grow the crops or farming or variety of trees from the ancient days due to erosion and desertification. This Culminating Experience Project explored how recommendation system can be developed and used in agroforestry. The research questions are Q1. What methods can be used to improve the accuracy and reliability of soil-based agroforestry tree species recommendation systems? Q2. How can agroforestry tree species recommendation systems be tailored to the needs of different stakeholders, such as smallholder farmers or agribusinesses? Q3. What will be the top three, tree recommendations using natural language processing …

Dental Microwear Of Miocene Primates From The Turkana Basin Of Northern Kenya, Leah K. Myerholtz

Graduate Theses and Dissertations

Comprehending the dietary patterns of Turkana Basin primates from the late Paleogene and early Neogene can contextualize the role of food choice in the evolution of higher primates in Africa. Dental Microwear Texture Analysis (DMTA) quantifies wear on the enamel of a tooth and can be used as a proxy to infer aspects of a taxon’s diet in the past. DMTA can provide insight into what specific animals in the past ate, rather than what they were capable of eating, and by extension, reflect food availability related to habitat preferences or environmental fluctuation. Here, primates from six Oligocene through Pliocene …

Non-Destructive Imaging Of Phytosulfokine Trafficking In Plants Using Fiber-Optic Fluorescence Microscopy, Bernard Abakah

Electronic Theses and Dissertations

Plants secrete peptide ligands and use receptor signaling to respond to stress and control development. Understanding these phenomena is key to improving plant health and productivity for food, fiber, and energy applications. Phytosulfokine (PSK), a sulfated peptide hormone, regulates plant cell division, growth, and stress tolerance via specific phytosulfokine receptors (PSKRs). This study uses fiber-optic fluorescence microscopy to elucidate trafficking of PSK in live plants. The microscope features two-color optics and an objective lens connected to a 1-m coherent imaging fiber mounted on either a conventional upright microscope body or 5-axis positioning system (X–Y–Z plus pitch and yaw). PSK and …

Let’S Take This Outside: Utilizing Outdoor Classrooms As A Response To The Coronavirus-19 Pandemic, Cortney Leigh Lamb

Dissertations

The worldwide school closures due to the Coronavirus (COVID)-19 pandemic that began in the spring of 2020 caused a disruption to educational systems (Bao et al., 2020; Engzell et al., 2021; Masonbrink & Hurley, 2020; Munir, 2021; United Nations International Children’s Emergency Fund, 2020). The pandemic created a dilemma in which school leaders around the world and in the United States had to make challenging decisions about how to open schools in the fall of 2020 and how to best educate students (Honein et al., 2021). The majority of school leaders choose to reopen schools in the fall of 2020 …

Investigación Arqueológica: Sitio Buen Suceso, Comuna Dos Mangas, Provincia De Santa Elena. Informe Preliminar. Temporada 2022., Sarah M. Rowe, Guy S. Duke, Sara L. Juengst, Daniela Balanzátegui

Anthropology Faculty Publications

Preliminary report on the 2022 excavation season at Bun Suceso, a Valdivia site located on the coast of Ecuador. Report submitted to the Region 5 Office of the Instituto Nacional de Patrimonio Cultural, Guayaquil, Ecuador.

Ireland V. United States: Agricultural And Environmental Sustainability Policies, Lauryn O'Grady

Accounting Undergraduate Honors Theses

The United States and Ireland have varying practices to achieve similar objectives in regard to environmental sustainability. While the European Union has maintained and updated a uniform policy throughout its existence--the Common Agricultural Policy--the United States instead created short-term solutions to a long-term problem. Not only does the United States tend to solve issues in the short-term, the policies between agricultural production and environmental sustainability are not necessarily aligned or remotely relative to the other. While the United States’ new Global Food Security Strategy implements parts of both agricultural and environmental sustainability, much of the history was not based off …

Fixed Assets Accounting: How It Can Impact Employees, Auditors & Shareholders, Zach Markey

Accounting Undergraduate Honors Theses

In this thesis, I demonstrate how the proper, or improper, accounting of fixed assets can distinctly impact employees, auditors, and shareholders of publicly traded companies. As a foundation for this thesis, I give an overview of fixed assets accounting by explaining its magnitude on the balance sheet and income statement in addition to the differences between financial and tax accounting for fixed assets. Next, I focus on three areas relating to fixed assets accounting that I find the most compelling for this thesis: capital expenditures, auditing and fraud. Each of these subtopics will share studies, procedures, and stories on how …

Influence Of Cover Cropping And Nitrogen Fertilization On Soil Properties And Cotton Productivity, Christianah Oladoye

All Dissertations

Conservation practices with cover crops have proven to be effective in nutrient enrichment, increased yield, and environmental stability. Field studies were conducted from 2019 to 2022 to evaluate the short-term effect of No cover crop [NC], RYE, a mix of rye + vetch [R+V], and mix of five species (radish, rye, vetch, clover, and lupin) [5W] on short term soil physical, chemical properties, cotton growth, and lint yield. Cover crops were planted in November and terminated in May of each year. Soil dry and wet aggregate fractions (0-0.05 m) and soil compaction (0-0.4 m depth) were measured at termination. The …

Communication In Phelan-Mcdermid Syndrome: Assessment And Genotype-Phenotype Correlation, Sarah Quadri

All Dissertations

Phelan McDermid Syndrome (PMS) is a rare genetic disorder caused by deletions or mutations of the SHANK3 gene on chromosome 22q13.3. Language and communication impairment are hallmark features of PMS, and this dissertation aims to address the lack of consensus on appropriate methods for assessing these abilities and genotype-phenotype correlations of language and communication impairments in PMS.

The first chapter introduces PMS and associated language and communication impairment, identifies gaps in the literature, and shows how this research fills those gaps to advance our understanding of this rare genetic disease. The second chapter identifies and analyzes practices for assessing speech, …

Beyond Just Money Transactions: Redesigning Digital Peer-To-Peer Payments For Social Connections, Lingyuan Li

All Dissertations

Financial activities, such as the exchange of money between individuals, have long been considered a crucial aspect of how people build and maintain their interpersonal relationships (i.e., a strong, deep, or close association/acquaintance between two or more people) with individuals they know because money is a sensitive social construct. In particular, over the past decade, how to conduct, manage, and experience money exchanges and processes between individuals has been dramatically transformed due to the increasing popularity of digital peer-to-peer (P2P) payment services (i.e., performing one to one online money transactions via a digital device). In this sense, digital P2P payments …

3d Printing With Photopolymerizable Polyester Resins For Resorbable Medical Device Applications, Mathew Murphy Stanford

All Dissertations

In the past decade, the healthcare industry has seen a significant increase in the use of additive manufacturing (AM or “3D printing”) with subsequent improvement in clinical outcomes.As an exceptional AM technology, vat-photopolymerization (VP), often called stereolithography, can create complex structures and has thus been adopted for a range of biomedical applications including surgical guides, temporary implants, and resorbable tissue scaffolds.However, limitations remain in the availability of photopolymerizable resin materials with appropriate mechanical performance, biodegradability, and biocompatibility for application to resorbable medical devices.

The objective of this work was to employ novel photopolymerizable polyester-based macromers in the development of resorbable …

Contrasting Public And Private Approaches To Private Land Conservation In The United States: Local Government, Land Trust, And Landowner Viewpoints, Anna Overby

All Dissertations

In the United States (US), low-density, non-contiguous development, termed sprawl, has long been of widespread concern. Since the 1970s, rural residential sprawl, or exurban sprawl, has grown faster than any other development pattern. Exurban sprawl is development beyond the urban/suburban fringe with ties to the urban environment, such as employment and consumption, rather than to rural economies. Exurban sprawl is highly consumptive of land and has implications for conservation, natural resource management, agriculture, and communities. This study explores two main avenues of exurban sprawl prevention in the US: voluntary conservation easements and local government growth management regulations. The use of …

Filth Flies As A Vector For Some Pathogenic Bacteria Transfer, Ahmet Buyukyavuz

All Dissertations

Two separate sets of experiments were conducted to determine the transfer of bacteria by flies. An Escherichia coli ampicillin-resistant strain with a fluorescent gene was used during the experiments. The first set of experiments were divided into two trials to measure the transfer of E. coli by fruit flies to apple slices and bologna during short term exposure. Short time exposure (1, 5 and 15 min) of flies to inoculated apple slices were tested in the first trial to determine the transfer of E. coli to flies. No difference (P>0.05) in the number of bacteria transferred to flies were …

Association Between Socioeconomic And Behavioral Characteristics With Urinary Neonicotinoid Levels In The United States, 2015-2016, Komi Nomessi Akliku

Capstone Experience: Master of Public Health

Neonicotinoids are a class of pesticides developed in the 1980s and widely used in agriculture and households. They are sources of health damage in mammals, as identified in experimental studies in rats. The health effects identified were acetamiprid: memory dysfunction, respiratory failure, and digestive troubles; imidacloprid: liver and brain cell necrosis through Nitric Oxide formation: Thiacloprid induces an increase of cytokine proinflammation and causes cell division disturbance and genotoxicity; thiamethoxam is incriminated in reproductive system toxicity and cardiotoxicity; clothianidin is found to be associated with fertility troubles affecting spermatozoids’ motility. They have been said to be associated with thyroid cancer …

Assessing The Impact Of Ebola Virus Inoculum Size On Likelihood Of Infection, Joseph Lukowski

Capstone Experience: Master of Public Health

Background: Indirect transmission of Ebola virus disease (EVD) is not uncommon but is poorly understood. Improving the understanding of the potential risk of EVD transmission from fomites should result in new or updated prevention or control measures for suspected or confirmed EVD cases or outbreaks.

Objective: This study aims to compile and understand pertinent data from peer-reviewed literature, establish the dose-response relationship between inoculum doses introduced to mucous membranes, and finally estimate the risk of EVD transmission from fomites.

Methods: A literature search was conducted through PubMed to obtain relevant data. This study employed this data to perform Poisson regression …

A Retrospective Analysis Of Rabies Lyssavirus Animal Testing In Nebraska, 2012 Through 2021, Elijah Theye

Capstone Experience: Master of Public Health

Background: Rabies is a zoonotic disease caused by a neurotropic virus that has been a public health issue for over 4,000 years, killing roughly 59,000 humans globally each year. This study examined the seasonality of bat-human exposures, the association between animal-human exposure types and animal rabies positivity, and using skunk monthly positivity rates to predict all non-skunk non-bat animal positivity rates with a lag time of six months, in Nebraska.

Methods: Animal rabies testing data from 2012-21 were extracted from Nebraska’s Electronic Disease Surveillance System. Animal tests that had a valid animal rabies test were included in the analyses. To …

A Survey On Digital Agriculture In Five West African Countries, Degila Jules, Ida Sèmévo Tognisse, Anne-Carole Honfoga, Sèton Calmette Ariane Houetohossou, Fréjus Ariel Kpedetin Sodedji, Souand Peace Gloria Tahi, Achille Ephrem Assogbadjo

AGriDI

This study focuses on agriculture, which is the main source of economic growth in many West African countries. In recent years, conventional agriculture has undergone a remarkable evolution and digital technologies are widely used for different purposes. While the world is rapidly using advanced digital technologies to grow their agriculture, Africa seems to be lagging behind, especially West Africa. To know how to contribute effectively, it is important to know what is being performed about this issue. The objective of this study is to examine the state of digital agriculture in five countries, namely, Benin, Burkina Faso, Côte d’Ivoire, Ghana, …

Dna Barcoding Of Ayurvedic Herbal Supplements Used For The Purported Treatment Of Covid-19, Calin Harris

Food Science (MS) Theses

The SARS-CoV-2 (COVID-19) pandemic was associated with an increased global use of traditional medicines, including Ayurvedic herbal supplements. Because of the growing demand and processed nature of these products, there is an increased risk of adulteration. In order to assess whether the contents of these products are consistent with the label, this study used DNA barcoding to test nine different types of herbal supplements (amla, ashwagandha, cinnamon, ginger, guduchi, tribulus, tulsi, turmeric, and vacha) associated with the Ayurvedic treatment of respiratory symptoms. A total of 54 commercial Ayurvedic herbal products were tested with four barcoding regions (i.e., rbcL, matK, ITS2, …