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Theoretical And Experimental Study Of Thermoradiative Cells For Space Power Generation, Andrew Schaefer Sep 2024

Theoretical And Experimental Study Of Thermoradiative Cells For Space Power Generation, Andrew Schaefer

Theses

Reliable power production is always a core element when engineers design a space mission. Typically, III-V solar arrays are used due to their high efficiency, radiation tolerance, and overall reliability. One downside of photovoltaics involves the need for incident light from the Sun. There are many places in the solar system and beyond that do not have access to sustained, high concentration solar radiation. As missions fly farther from the Sun, the available light power decreases with the inverse square of the distance. This means that missions past Jupiter are only receiving one tenth the solar power compared to Earth. …


Fractional Derivative-Based Analysis Of The Heat Transfer Properties Of Fluid Flow Over A Contracting Permeable Infinite-Length Cylinder, Anas Saeb Alhasan Sep 2024

Fractional Derivative-Based Analysis Of The Heat Transfer Properties Of Fluid Flow Over A Contracting Permeable Infinite-Length Cylinder, Anas Saeb Alhasan

Theses

Understanding the complex interplay between the contracting behavior of the cylinder and the fluid flow dynamics has implications for the design of porous structures for heat exchange and filtration systems. In this study, we investigate the dynamics and thermal behavior of fluid flow past a contracting permeable infinite cylinder. First, we developed a mathematical model based on the Navier-Stokes equations to describe the fluid dynamics around the contracting permeable infinite cylinder. A new simple well-behaved definition of fractional derivative called conformable fractional derivative introduced by authors Khalil et al. [3] is employed to generalize the PDE’s of momentum and energy. …


Exploring Experience Design In The Art Deco Restoration Of Indianapolis Bottleworks Hotel, Jennifer A. Mott Sep 2024

Exploring Experience Design In The Art Deco Restoration Of Indianapolis Bottleworks Hotel, Jennifer A. Mott

Theses

This thesis investigates the interaction between emotional resonance, the Decorative Arts, and historical significance in creating a curated emotional experience. Focused on the case study of the Bottleworks Hotel, a restored Art Deco gem within the former Coca-Cola Bottling Company plant in Indianapolis, this research provides an interpretative analysis, synthesis of the literature, and primary source surveys and reviews to show that the Art Deco restoration and the historical significance of the bottling plant work together to create stimulating experience design. As urban landscapes undergo transformation and the tourism industry becomes increasingly competitive and significant, this study not only enriches …


An Examination Of Artistic Expression Through Honoré Daumier's Le Fardeau, Sarah Isak-Goode Sep 2024

An Examination Of Artistic Expression Through Honoré Daumier's Le Fardeau, Sarah Isak-Goode

Theses

Honoré Daumier, renowned for his career as a political cartoonist in 19th-century France, created a substantial body of personal works that have received comparatively little scholarly attention. This thesis focuses on Daumier's paintings, particularly those created during his midlife (1848-1864), examining their distinctively serious qualities and emotional depth. Through an interdisciplinary approach combining art historical analysis and psychobiography, this research explores the previously unrecognized connection between Daumier's paintings and his private life experiences. Central to this study is an in-depth analysis of Le Fardeau, a painting that exemplifies Daumier's artistic evolution and emotional expression during a period marked by personal …


How Many Fathers? Frequency Of Multiple Paternity In Soupfin Sharks (Galeorhinus Galeus) From California And Australia, Okoiya Kelly Aug 2024

How Many Fathers? Frequency Of Multiple Paternity In Soupfin Sharks (Galeorhinus Galeus) From California And Australia, Okoiya Kelly

Theses

Multiple paternity has been widely documented in elasmobranch fishes (sharks, rays, and skates); however, the frequency of multiple paternity (FMP; the percentage of sampled litters having multiple sires) varies greatly both among and within species. Understanding the reasons for this inter- and intraspecific variation in FMP may be key to understanding why females mate with multiple males. The soupfin shark (Galeorhinus galeus) is an understudied species in this regard with only one study previously investigating multiple paternity, in which two out of five litters sampled from New Zealand were found to have multiple sires (FMP = 40.0%). We augmented this …


Monitoring Marine Animal Interactions With Open Ocean Aquaculture And The Potential For Measuring Impacts, Ryan Richard Yont Aug 2024

Monitoring Marine Animal Interactions With Open Ocean Aquaculture And The Potential For Measuring Impacts, Ryan Richard Yont

Theses

Aquaculture, the farming of water-based organisms, is one of the fastest growing industries in the food production sector globally. Aquaculture farms, regardless of type, are categorized as either coastal or offshore marine aquaculture and are generalized into three categories: fed (e.g., finfish), unfed (e.g., filter-feeding bivalves), and autotrophic (e.g. kelp). Viewed as an agricultural industry, marine aquaculture is tightly regulated, particularly in the U.S. Despite this, an area of concern for the public and management alike is the potential for marine life interactions with aquaculture gear. Even the best-run farms represent a change in the physical and biological characteristics of …


The Potential For Automated Insect Classification Using Infrared Remote Sensing, Rachel Deahl Aug 2024

The Potential For Automated Insect Classification Using Infrared Remote Sensing, Rachel Deahl

Theses

Insects play an important role within ecosystems, occupying almost all trophic levels and providing crucial services such as pollination and decomposition. In addition, they can directly and negatively impact humans as crop pests, parasites, and disease vectors. Thus, it is essential to understand the spatial and temporal dynamics of insect populations and communities. Various forms of remote sensing, such as LiDAR, have been used to capture data on insects but often are costly and require advanced expertise. The objective of this thesis is to evaluate a cost-effective methodology that balances information loss. This thesis aims to outline the discrimination required …


Flight Preparations And Data Reduction For The Third Flight Of The Cosmic Infrared Background Experiment-2, Kazuma Noda Aug 2024

Flight Preparations And Data Reduction For The Third Flight Of The Cosmic Infrared Background Experiment-2, Kazuma Noda

Theses

The extragalactic background light (EBL) at infrared (IR) wavelengths contains information about the stars that lived during the epoch of reionization, which was the first era of star formation that occurred a few hundred of Myr after the Big Bang. Anisotropy measurements of the IR EBL by CIBER-1, Spitzer, and AKARI have shown that the amplitude of its surface brightness fluctuations exceeds what is expected from known galaxy populations. Potential sources of this excess include stars during the epoch of reionization, intra-halo light (IHL) from low-mass stars stripped from their parent galaxies, and the decay products of dark matter candidate …


Polytetrafluoroethylene (Ptfe) Vs. Ptfe-Free Coatings On Paper Label: Analysis Of Label Mechanical And Performance Properties, Chuqi Su Aug 2024

Polytetrafluoroethylene (Ptfe) Vs. Ptfe-Free Coatings On Paper Label: Analysis Of Label Mechanical And Performance Properties, Chuqi Su

Theses

Post-printed water-based (WB) coatings, commonly known as aqueous coatings, have gained popularity for paper-based label manufacturing because of their environmentally friendly characteristics. Polytetrafluoroethylene (PTFE) is one of the common additives added to the WB coatings to achieve heat resistance and rub resistance properties for the final product. PTFE is a synthetic fluoropolymer of tetrafluoroethylene, and is a category of Polyfluorinated Substances (PFAS). As of January 2024, the sale of food packaging containing PFAS is prohibited in the state of Minnesota, with expectations that this regulation will extend to other states because of the proven harm of PFAS to both humans …


Gallbladder, Raiven Gibbons Aug 2024

Gallbladder, Raiven Gibbons

Theses

Gallbladder is a triptych feature screenplay focusing on a woman’s search for the meaning of life, death, and their function in between, titled “Time.” The feature explores themes of home, desire, lust, family, romance, codependency, independency, work life, and responsibilities, while finding a reason to laugh in an absurdist world. Each segment is inspired by my personal experiences working within the healthcare system. It was written between September 2023-August 2024 including pre-production and post-production of the live action proof of concept short and the full feature script. This paper describes and analyzes the screenwriting process for Raiven Gibbons, writer and …


Modeling The Impact Of Behavioral Changes And Heterogeneity On U.S. Energy Demand, Sinoun Phoung Aug 2024

Modeling The Impact Of Behavioral Changes And Heterogeneity On U.S. Energy Demand, Sinoun Phoung

Theses

Energy consumption is fundamental to the functioning of modern society, powering essential activities such as transportation, cooking, and working. The drivers of energy demand are influenced by an interplay of physical characteristics, climatic conditions, policy decisions, and behavioral patterns. These behavioral patterns are shaped by socio-demographic factors such as age, income, and employment status, which introduce variability in energy usage. Additionally, the COVID-19 pandemic has introduced changes in daily behaviors, which is persisting into the post-pandemic era and further influencing changes in energy consumption. Understanding and quantifying the diversity and changes in societal behaviors is crucial for energy management and …


Sold Out: The Commodification Of Personal Data In The Digital Age, Olaya Ordieres Ortega Aug 2024

Sold Out: The Commodification Of Personal Data In The Digital Age, Olaya Ordieres Ortega

Theses

The project titled ‘SOLD OUT’ investigates the profound implications of digital data privacy through a multifaceted multimedia campaign designed to expose and critique the commodification of human information. The campaign explores how contemporary data collection practices have transformed individuals into mere products, bought, sold, and traded without their consent. The project employs a combination of analog and digital mediums to present an engaging and provocative narrative that challenges viewers to confront the stark reality of data privacy in the modern age. ‘SOLD OUT’ transforms abstract privacy concerns into tangible and relatable experiences by linking them to common daily activities and …


Augmenting Social Engagement For Students: Leveraging Ar For Interactive Student Experiences, Promoting Overall Well Being., Aditi Singh Aug 2024

Augmenting Social Engagement For Students: Leveraging Ar For Interactive Student Experiences, Promoting Overall Well Being., Aditi Singh

Theses

This thesis explores the concept of an Augmented Reality Application designed to enhance student’s social engagement with their peers in campus activities at universities. It uses AR Technology and futuristic interface design to create a fun and interactive environment that motivates graduate students to socialize more often and maintain a balanced lifestyle. The problem addressed here is the lack of motivation and resources among students to engage in activities due to academic pressures which also adversely affects students mental and emotional wellbeing. The proposed solution involves integrating AR interfaces and elements that immerse them in an enjoyable environment and encourage …


Physical Properties Of Bulk Carbon Nanotube Conductors Impacting Radio Frequency Waveguide Measurements, Samuel J. Boyd Aug 2024

Physical Properties Of Bulk Carbon Nanotube Conductors Impacting Radio Frequency Waveguide Measurements, Samuel J. Boyd

Theses

Recent developments in radio frequency (RF) electronics motivate the interest in developing multi-functional materials which have effective electrical properties with increasing frequency that minimize the conventional skin effect. Carbon nanotubes (CNTs) are emerging as a candidate material due to high direct current (DC) electrical conductivity, flexure tolerance, corrosion resistance, and low density. The DC electrical conductivity of CNT networks is affected by the high resistance junctions between individual or bundled CNTs. Strategies to modify the properties of these junctions have included chemical doping, nano-metal deposition, and physical densification. Alternating current (AC) conductivity measurements of bulk CNT materials to date have …


Plastic Abundance And Degradation In The Anaerobic Digestion Of Food Waste, Abbey Whitney Aug 2024

Plastic Abundance And Degradation In The Anaerobic Digestion Of Food Waste, Abbey Whitney

Theses

Food waste (FW) is a pervasive issue across the supply chain, with an estimated 30-40% of the food supply left unsold or uneaten annually (ReFED, 2022). In response, in 2015 the U.S. set a goal to halve FW by 2030 (U.S. EPA, 2020f). Valorization, the process of recovering value from FW, has become a key strategy, with anaerobic digestion (AD) playing a pivotal role. AD transforms organic waste into biogas and digestate, a potential soil amendment. However, plastic contamination in the organic waste stream poses a significant challenge. During digestion and storage, plastic debris can break down into microplastics (MP), …


Factors That Enable Cashless Payment Adoption Among The Blue-Collar Workers In Dubai, Rasheed Abdu Venmadathayil Aug 2024

Factors That Enable Cashless Payment Adoption Among The Blue-Collar Workers In Dubai, Rasheed Abdu Venmadathayil

Theses

As part of the Smart Dubai 2021 Strategy, Dubai is leveraging a wide range of technologies to enhance the lives of its residents and drive economic development. A key component of this strategy is the shift toward digital payments and a cashless economy (UAE Government Portal, 2021). In 2020, the Dubai Government established the Cashless Dubai Working Group to create an action plan aimed at transforming all payment transactions in the city to cashless platforms. The UAE, including Dubai, has the essential prerequisites for a cashless economy, such as advanced digital infrastructure and government regulations that protect consumer security and …


Exploring Human Perception In Machining Monitoring, Rui Bob Yang Aug 2024

Exploring Human Perception In Machining Monitoring, Rui Bob Yang

Theses

Monitoring CNC machining processes ensures the satisfaction of dimensional tolerances and surface finish requirements, while minimizing tool wear and downtime caused by accidents. Sensor-based automated monitoring systems driven by Artificial Intelligence (AI) trained on extensive datasets have demonstrated high accuracy and consistency in monitoring tool wear progression. However, the performance of AI-driven monitoring systems heavily relies on the available training data, often struggling with scenarios not covered in training, such as variations in tool path, feed rate, and machine models. In contrast, experienced machinists excel in monitoring machining operations across diverse tool paths, machining parameters, and machine tool models, often …


Design And Implementation Of A Modular, Standalone Microfluidic Flow Control Platform For Cell Culture Applications, Meng-Chun Hsu Aug 2024

Design And Implementation Of A Modular, Standalone Microfluidic Flow Control Platform For Cell Culture Applications, Meng-Chun Hsu

Theses

Microfluidics, a technology of manipulating small quantities of fluids (0.1-10 µL), has drawn interest as an emerging platform for biomedical and chemical applications since its debut due to several advantages, including better precision in flow rate control, smaller required sample sizes, lower costs of analyses, and shorter turnaround times. Well-defined fluid flows are the hallmark feature of microfluidic culture systems and enable precise control over biophysical and biochemical cues at the cellular scale. One key demand for microfluidics is to control the delivered fluid flows to downstream applications. This is generally achieved via two major components – valves and pumps. …


Event Sensor Simulator With Hardware Accelerated Ray Tracer And Image Space Photon Mapping, Chengyi Ma Aug 2024

Event Sensor Simulator With Hardware Accelerated Ray Tracer And Image Space Photon Mapping, Chengyi Ma

Theses

In this study, we present an advanced event sensor simulator leveraging NVIDIA OptiX to address and overcome the limitations of existing event sensor simulators. Our simulator demonstrates significant improvements in both processing speed and temporal resolution compared to traditional methods such as v2e. These advancements are achieved by programming a real-time ray tracer with asynchronous event pixels using Nvidia OptiX’s sophisticated motion system, which provides hardware motion interpolation on GPU threads. This enables sampling dynamic scenes to generate a series of events independent from frame rates. Additionally, we introduce an image space photon mapping method utilizing OptiX for enhanced global …


Binary Neutron Stars: From Interpreting Individual Events To Inferring Population Properties, Anjali Balasaheb Yelikar Aug 2024

Binary Neutron Stars: From Interpreting Individual Events To Inferring Population Properties, Anjali Balasaheb Yelikar

Theses

Accurate information from gravitational wave signals from coalescing binary neutron stars provides essential input to downstream interpretations, including inference of the neutron star population and equation of state. However, even adopting the currently most accurate and physically motivated models available for parameter estimation (PE) of binary neutron stars(s), these models remain subject to waveform modeling uncertainty: differences between these models may introduce biases in recovered source properties. In this work, we describe injection studies investigating these systematic differences between the two best waveform models available for BNS currently, NRHybSur3dq8Tidal and TEOBResumS. We demonstrate that for BNS sources observable by current …


It's There, Seojung Kang Aug 2024

It's There, Seojung Kang

Theses

This thesis explores the true value of normalcy through repetitive production in order to redefine the importance of ordinary that is taken for granted.


Population Demographics Of Crappies (Pomoxis Spp.) And Comparison Of Fish Community Monitoring Techniques In Smithland Pool Of The Ohio River, Joseph Rector Aug 2024

Population Demographics Of Crappies (Pomoxis Spp.) And Comparison Of Fish Community Monitoring Techniques In Smithland Pool Of The Ohio River, Joseph Rector

Theses

Large rivers in the United States support popular recreational and commercial fisheries despite being among the most heavily anthropogenically modified habitats due to the construction of dams and levees, agricultural and industrial pollution, and channel modification, all of which can disrupt aquatic ecosystem function and affect fish community composition and abundance. However, despite their relative importance, riverine fisheries research tends to lag behind that of lakes and reservoirs due to the complexity of habitats and difficulties in reliably sampling dynamic waterbodies. Many fisheries biologists, researchers, and managers have implemented long-term resource monitoring programs on large rivers to collect and aggregate …


Impacts Of Intensifying A Corn-Soybean Rotation With Winter Wheat (Triticum Aestivum) On Nutrient Leaching, Plant Available Nutrients, Crop Yields, And Nitrogen Dynamics In Southern Illinois, Abigail Leigh Spiers Aug 2024

Impacts Of Intensifying A Corn-Soybean Rotation With Winter Wheat (Triticum Aestivum) On Nutrient Leaching, Plant Available Nutrients, Crop Yields, And Nitrogen Dynamics In Southern Illinois, Abigail Leigh Spiers

Theses

The Midwestern United States is a nationally and globally important producer of agricultural products and uses intensive practices to achieve high grain yields. However, intensive agriculture is a major contributor of nitrogen and phosphorus export to the Mississippi River and the hypoxic zone in the Gulf of Mexico. Cover cropping is a recommended conservation practice for providing soil cover throughout the winter and taking up nutrients that may otherwise be lost in bare fallow systems, but the associated costs limit widespread adoption of this practice. Double cropping, which involves growing two crops in one year, is functionally similar to cover …


Energetics And Passivation Of Surface Defects In Hgte Colloidal Quantum Dots, Jacob D. Eisensmith Aug 2024

Energetics And Passivation Of Surface Defects In Hgte Colloidal Quantum Dots, Jacob D. Eisensmith

Theses

Colloidal quantum dots (CQDs), and especially HgTe CQDs, have the potential to disrupt traditional solid-state manufacturing of sensitive infrared photodetectors. Here we produce a surface model for (111) HgTe surfaces present in tetrahedral CQDs and attempt to use density functional theory (DFT) to explore various issues in the fabrication and performance of HgTe CQD photodetectors. One such concern is the presence of mid-gap trap states that can hurt device performance. In this work, we demonstrate that an abundant source of these trap states is unpassivated mercury at the surface of the nanocrystal, which can be corrected with passivation procedures. Furthermore, …


Utilizing Exoskeletons For Intermittent Trunk Flexion Tasks: Implications On Kinematics, Stability, Muscle Activity And Fatigue, Pranav Madhav Kuber Aug 2024

Utilizing Exoskeletons For Intermittent Trunk Flexion Tasks: Implications On Kinematics, Stability, Muscle Activity And Fatigue, Pranav Madhav Kuber

Theses

Exoskeletons (EXOs) are wearable assistive devices that enhance workers' physical capabilities and reduce injury risk due to overexertion. However, current devices may produce mixed outcomes, and even increase demands. Factors responsible for this gap were identified and potential design improvements were proposed to improve their adoption. A subsequent systematic review showed mixed outcomes in real-world scenarios, possibly due to challenges in conducting field evaluations. A new guideline is proposed, which can be beneficial in improving the generalizability of findings in field evaluations. Low-back is injury-prone due to repetitive trunk flexion tasks, where Back-support industrial exoskeletons (BSIEs) can be beneficial. Literature …


Development And Testing Of A Far Infrared Fourier Transform Spectrometer For The Calibration Of On-Chip Spectrometers, Dale Mercado Aug 2024

Development And Testing Of A Far Infrared Fourier Transform Spectrometer For The Calibration Of On-Chip Spectrometers, Dale Mercado

Theses

Astrophysical measurements in the far-infrared (FIR) wavelengths are crucial for a variety of astrophysical applications. These include probing the fuel for cosmic star formation, understanding the developmental cycles of protoplanetary disks, and investigating the role and composition of dust in the interstellar medium. Our collaboration is currently developing a FIR on-chip spectrometer that is operable in the range of 100-200µm, utilizing low-noise kinetic inductance detectors (KIDs). As these devices incorporate new technology, their spectral response must be measured and compared with traditional FIR optical dispersion methods. To this end, we have designed a cryogenic Fourier Transform Spectrometer (FTS) that operates …


Kilonova Modeling And Parameter Inference, Marko Ristic Aug 2024

Kilonova Modeling And Parameter Inference, Marko Ristic

Theses

This dissertation details the generation of a kilonova simulation training library and the training of subsequent machine learning emulators used for multidimensional interpolation. We begin with a Gaussian process interpolation methodology and apply that emulator for Bayesian inference with the AT 2017gfo light-curve dataset. We then expand on our emulator interpolation methodology, replacing the scalar Gaussian process emulator with a vector neural network emulator for light-curve generation. Our neural network emulator results are localized to a much more narrow region of the parameter space, prompting a detailed supportive investigation of the systematic uncertainty associated with our inference approach. We then …


General Relativistic Magnetohydrodynamics Simulations Of Outflows From Long-Lived Binary Neutron Star Merger Remnants, Allen Wen Aug 2024

General Relativistic Magnetohydrodynamics Simulations Of Outflows From Long-Lived Binary Neutron Star Merger Remnants, Allen Wen

Theses

While the landmark multimessenger observations associated with the binary neutron star (BNS) merger GW170817 confirmed the existence of merging BNS systems and their ability to generate gamma-ray bursts and kilonova emission, the exact physical processes that link hydrodynamics in the merger remnant to electromagnetic (EM) signals remains up for debate. Moreover, the uncertain lifetime of the remnant before its possible collapse to a black hole can dramatically change the physics involved in the postmerger evolution. We aim to facilitate and study energetic outflow launching in the long-lived hypermassive or supramassive neutron star remnant case by performing 3D general relativistic magnetohydrodynamics …


Photonic Integrated Circuit Data Acquisition And Tunable Laser Control For Biomedical Point Of Care Systems, Maximilian Thoburn Aug 2024

Photonic Integrated Circuit Data Acquisition And Tunable Laser Control For Biomedical Point Of Care Systems, Maximilian Thoburn

Theses

In the world of healthcare, it has always been desirable to have a single test that can screen for multiple different patient ailments at once. Toward this end, a silicon photonics platform has been developed that uses photonic integrated circuits in combination with lasers to simultaneously perform various biological assays, i.e., to screen for biological markers in a patient’s sample. This system uses inexpensive passive flow cards with inexpensive photonic integrated circuits to create a disposable test platform that can be used in point of care environments. However, the necessary bench-top equipment to run an assay with these cards is …


Effects Of Urban Borders On Synanthropic Mesopredator Movement And Risk Of Toxoplasma Gondii Infection In The Protected Lands Of Key Largo, Florida Usa, Kelly A. Crandall Aug 2024

Effects Of Urban Borders On Synanthropic Mesopredator Movement And Risk Of Toxoplasma Gondii Infection In The Protected Lands Of Key Largo, Florida Usa, Kelly A. Crandall

Theses

Protected lands are an important source of food, shelter, and reproductive opportunities for wildlife, especially in urbanizing landscapes. When urban development abuts the edges of protected lands, synanthropic species can alter their foraging behaviors and movement to utilize human-supplemented resources throughout the urban-wild interface. Therefore, urban edges on protected lands can have pronounced effects on animal movement and ecosystem function. There is also increased risk of disease transmission where high densities of wild animals exist, or where domestic animals and wild species are interacting. In particular, members of the family Felidae, including domestic cats (Felis catus), can transmit the pathogenic …