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Articles 781 - 810 of 11526
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The Future Of Robotic-Teacher Relationship In Classrooms: Cooperation Or Competition?, Miaad Saleh Hassan Abdullah Mobarak
The Future Of Robotic-Teacher Relationship In Classrooms: Cooperation Or Competition?, Miaad Saleh Hassan Abdullah Mobarak
Theses
As the realms of artificial intelligence (AI) and robotics undergo exponential growth and the issue of teacher shortage remains a concern, the potential for remarkable advancements in education with the assistance of robots becomes increasingly important. This review is conducted to understand the forthcoming role of robotics in education and its impact on teachers’ role in the classroom. Currently, it is widely known that AI is evolving in a rapid way, creating a huge presence in our life, building a perception among people that it will take over the role of human in various settings in the future. Various articles …
Predictive Modeling Of Sociodemographic And Self-Construct Factors Affecting Math Performance In Secondary Education, Shaikha Ahmed Alaleeli
Predictive Modeling Of Sociodemographic And Self-Construct Factors Affecting Math Performance In Secondary Education, Shaikha Ahmed Alaleeli
Theses
Math is a prime subject because of its transferability to other fields of learning and its applications in daily and professional life. As a result, most countries and educational institutions focus on improving math performance, however student grades vary due to personal, familial, and institutional factors. Thus, the present study seeks to build a predictive model of sociodemographic and self-construct factors affecting math performance and identify which ones are the most impactful on student grades. The specific objectives are (1) to determine the association between student/family and school sociodemographic characteristics and math performance; (2) to the influence of student self-construct …
Theoretical And Experimental Study Of Thermoradiative Cells For Space Power Generation, Andrew Schaefer
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
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
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 …
Monitoring Marine Animal Interactions With Open Ocean Aquaculture And The Potential For Measuring Impacts, Ryan Richard Yont
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 …
On The Optimization Of Sensors For The Remote Sensing Of Crop Yield, Nathan M. Burglewski
On The Optimization Of Sensors For The Remote Sensing Of Crop Yield, Nathan M. Burglewski
Theses
Remote sensing has long been a part of precision agriculture research, with products related to spatially-explicit, within-field management of yield, disease, and harvest scheduling, to name a few application areas that are of interest to industry. A variety of spaceborne, airborne, and in-situ sensors are used to monitor crop health throughout the growing season, inform management decisions for farmers, and dictate logistical or planning operations. Crop yield forecasting, specifically, comes in many forms, but recently machine learning algorithms have gained prominence, at the cost of more traditional parametric regression models. While much work has been accomplished towards grain yield estimation …
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 …
A Dual-Core Risc-V Processor With A Two-Level Programmable Cache Emulation And Test System, Marcus Figorito
A Dual-Core Risc-V Processor With A Two-Level Programmable Cache Emulation And Test System, Marcus Figorito
Theses
The Compiler Lease of Cache Memory (CLAM) project has previously explored the effects of lease-based replacement policies for benchmarks (programs) run on single-core with single-level and single-core with two-level cache architectural config- urations. This work builds and expands on this prior work by continuing the same line of inquiry for a dual-core with two-level cache architectural configuration. The lease-based replacement policies studied are: Compiler Assigned Reference Leasing (CARL), Phased Reference Leasing (PRL), Scope Hooked Eviction Leasing (SHEL), and Cross-Scope Hooked Eviction Leasing (C-SHEL). These are compared to the per- formance of the traditional Pseudo Least Recently Used (PLRU) replacement policy. …
Physical Properties Of Bulk Carbon Nanotube Conductors Impacting Radio Frequency Waveguide Measurements, Samuel J. Boyd
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
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), …
Exploring Human Perception In Machining Monitoring, Rui Bob Yang
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
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
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 …
Design Of Face-Milled Spiral Bevel Gear Drives With The Desired Conditions Of Meshing And Contact By Application Of The Universal Motion Concept, Akari Tawa
Theses
This thesis aims to improve the computational methodology proposed by Fuentes et al. (2018) for the design of face-milled spiral bevel gear drives in order to get closer to the objective gear tooth surfaces and provide the desired meshing and contact conditions. In the existing computational methodology, all machine-tool settings, excluding velocity ratio, are treated as constants, whereas in this work, the machine-tool settings will be computed by polynomial functions up to the fourth degree of the cradle angle, approach commonly known as Universal Motion Concept (UMC). The proposed approach assumes a predefined geometry for the wheel member of the …
The Enigmatic Taoist Relic: A Fusion Of Chinese Traditional Culture And Futuristic Imagination, Zhuoran Yang
The Enigmatic Taoist Relic: A Fusion Of Chinese Traditional Culture And Futuristic Imagination, Zhuoran Yang
Theses
The Eight Immortals is one of the representative mythological stories in traditional Chinese culture. Being a cultural creation that incorporates the ideas of local Chinese Taoism, these eight immortals and their iconic instruments, the Eight Treasures, have become symbols and emblems that have appeared as decorations on artifacts throughout the ages. This story has been rewritten into various novels, plays, movies, and even games throughout history. However, they have never broken away from a classical oriental narrative, and its dissemination has been limited to the Chinese-speaking world. And in this age of globalization, this story should have a wider audience …
A Domain-Specific Language For Accounting, Janhavi Doshi
A Domain-Specific Language For Accounting, Janhavi Doshi
Theses
Accounting can be loosely described as a set of rules and best practices for recording and reporting financial transactions. Despite the seemingly straightforward nature of these principles, implementing them through programming has proven to be complex. Currently, over 550 accounting software solutions exist, developed using more than 17 programming languages. These diverse and often fragmented solutions have led to numerous instances of fraud and errors that elude early detection due to inadequate validity checks. This study investigates the need for a unified approach by developing a Domain-Specific Language (DSL) for Accounting. The proposed DSL aims to standardize accounting practices, enhance …
Impact Of Foreign Aid To Agriculture In Reducing Poverty In Developing Countries., Richard Amoako
Impact Of Foreign Aid To Agriculture In Reducing Poverty In Developing Countries., Richard Amoako
Theses
The effectiveness of foreign aid in reducing poverty has been a contentious issue in development economics. This paper focuses specifically on aid directed towards agriculture, a sector critical for rural livelihoods and poverty alleviation. It investigates the empirical relationship between agricultural aid flows and poverty levels in 46 developing countries between 1997-2020. Fixed effects panel regressions estimate models with the $2.15/day (based on 2017 PPP) poverty headcount ratio as the outcome variable. The key finding is that agricultural aid has a statistically significant poverty-reducing impact. The regression coefficients indicate that on average, a 1% increase in agricultural aid is associated …
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 …
Half Past Primrose, Laura E. Wilson
Half Past Primrose, Laura E. Wilson
Theses
Half Past Primrose is a climate memoir in verse, exploring the experiences of growing up with climate change in Wisconsin and the fundamental life shifts it poses.
Energetics And Passivation Of Surface Defects In Hgte Colloidal Quantum Dots, Jacob D. Eisensmith
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, …
Rural Electrification Subsidies: Quantification, Structure And Policy Implications, Lefu Maqelepo
Rural Electrification Subsidies: Quantification, Structure And Policy Implications, Lefu Maqelepo
Theses
This dissertation explores rural electrification subsidies and the policies around them, with an objective of assessing whether there are opportunities to restructure, and therefore redistribute subsidies to a larger portfolio of technology options to accelerate rural electrification and improve energy justice. Redistribution of subsidy necessitates an understanding of the amount of subsidy and how it is distributed. To do this, a quantitative modeling framework that enables for a direct comparison between grid extension and mini grid based electrification pathways based on implicit subsidy required to make connections over a system lifetime was developed and is presented. Using this framework, our …
Utilizing Exoskeletons For Intermittent Trunk Flexion Tasks: Implications On Kinematics, Stability, Muscle Activity And Fatigue, Pranav Madhav Kuber
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
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 …
A Mixture-Of-Experts Approach To Fine-Tuning The Segment Anything Model, Rajat Sahay
A Mixture-Of-Experts Approach To Fine-Tuning The Segment Anything Model, Rajat Sahay
Theses
The emergence of large, general-purpose foundation models has sparked significant interest in the broader machine learning community. Among the many models being released, the Segment Anything Model (SAM) has demonstrated exceptional capabilities for object segmentation in various settings. Given its expansive training data, SAM has been used for image segmentation across various downstream tasks ranging from tumour segmentation to aerial object detection. However, the majority of pretraining data used by SAM consists of naturally-occurring images, which have significantly different characteristics from images of tumours or images taken by drones. In order to align SAM to these previously unseen domains, we …
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
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 …
Impact Of Heat Treatment On Microstructure & Friction Performance Of Nasa Al 398 Alloy Rotors, Manjith Srinivas Koganti
Impact Of Heat Treatment On Microstructure & Friction Performance Of Nasa Al 398 Alloy Rotors, Manjith Srinivas Koganti
Theses
Interaction of friction brakes with external environment can considerably influence their performance which could relate to friction instabilities and friction induced vibration and noise. The goal of this thesis is to optimize the mechanical properties of Al-alloy and address the friction, wear, and noise heat-treated rotors tested in scaled down SAE recommended testing procedure. The adopted T5 heat treatment process of Al-alloys involves a particular order of controlled heating and cooling steps designed to get specific microstructural changes within the alloy leading to optimized strength/hardness. Hardness is measured with Rockwell’s Hardness Tester. Artificial ageing at elevated temperature process is done. …
Inference On Neutron Star Parameters And The Nuclear Equation Of State With Rift, Using Prior Eos Information, Askold Vilkha
Inference On Neutron Star Parameters And The Nuclear Equation Of State With Rift, Using Prior Eos Information, Askold Vilkha
Theses
One of the most extreme objects in the Universe, neutron stars are the remnants of supernova explosions. A usual neutron star has a mass in the range of 0.8 − 2.4M⊙ and a radius of about 10 km. Such small radii and high masses imply extreme densities, that exceed the nuclear density ρnuc . The extreme conditions of cold ultradense matter present inside the neutron star cannot be achieved in terrestrial laboratories, so the equation of state (EOS) of such matter is not well understood. Currently, there are many theoretical models of the EOS based on nuclear physics (Quantum Chromodynamics …
Formulation, Manufacture, And Deployment Of A Sustainable Multi-Layer Agricultural Mulch Film, Yvan David Hernandez-Charpak
Formulation, Manufacture, And Deployment Of A Sustainable Multi-Layer Agricultural Mulch Film, Yvan David Hernandez-Charpak
Theses
Agricultural mulching films (AMF) increase crop yield while reducing pesticides use, meeting the needs of a growing world population. However, their disposal options have led to an intensifying and concerning problem of plastic pollution. Biodegradable mulch films are available, but adoption has been limited because of their unpredictable degradation rate, making them unreliable compared to conventional polyethylene AMF. This dissertation presents a multi-layer film structure (commonly used in the packaging industry), its manufacture, deployment in the field, and comprehensive sustainability assessment. Its structure consists of a thick middle layer of thermoplastic starch (TPS) and biochar filled-biodegradable poly(butylene adipate-co-terephthalate) (PBAT) thin …