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Time Variant Particle Swarm Optimization For Autonomous Dynamic Rescue And Recovery, Kyle Sanders
Time Variant Particle Swarm Optimization For Autonomous Dynamic Rescue And Recovery, Kyle Sanders
Master's Theses and Capstones
Rescue and recovery missions on extraterrestrial sites are an inevitable necessity, especiallywith increased extraterrestrial exploration. Robotic and crewed missions provide significant challenges due to budgetary restrictions and time constraints. Particle Swarm Optimization (PSO) techniques leverage shared swarm knowledge for solution convergence. However, traditional PSO exhibits performance degradation in dynamic scenarios. The author presents Time-Variant Particle Swarm Optimization (TVPSO), which weighs newer measurements higher than previously held values. This is achieved through implementation of a configurable comparison function as part of the survival of the fittest logical calculations. Three versions of this comparison function are evaluated (exponential, linear, and logistic) against …
Robust Edge Machine-Learning For The Real-Time Processing And Prediction Of Geomagnetic Anomalies And Geomagnetically Induced Currents (Gics), Talha Siddique
Robust Edge Machine-Learning For The Real-Time Processing And Prediction Of Geomagnetic Anomalies And Geomagnetically Induced Currents (Gics), Talha Siddique
Doctoral Dissertations
Geomagnetically Induced Currents (GICs) are currents induced in the Earth's surface conductors and are caused by geomagnetic disturbances or storms (GMDs). Such disturbances in the Earth's magnetic field are the result of interactions between the Earth's magnetosphere (the region of space dominated by the Earth's magnetic field) and the solar wind (a continuous stream of charged particles from the Sun) \cite{camporeale_machine_2018} \cite{geosciences12010027}. These induced currents considerably threaten vital technological systems, notably the electrical power grids. This research addresses the critical challenges of robust, real-time forecasting and monitoring of GICs using machine learning (ML). The project initiative responds to the inherent …
A Multi-Layered, Discourse-Oriented Exploration Of Learning Assistant-Student Interaction In Calculus I, Rebecca Butler
A Multi-Layered, Discourse-Oriented Exploration Of Learning Assistant-Student Interaction In Calculus I, Rebecca Butler
Doctoral Dissertations
Learning Assistants (LAs) are undergraduate near-peer tutors who aid in the instruction of collegiate courses in which they have previously been successful as students. It has been consistently shown that students in LA-supported STEM courses have more positive course outcomes than their peers without LA support. The benefits include improved retention, better scores on content assessments requiring higher-order reasoning, and a greater sense of belonging in STEM. Little is known about why students in LA-supported courses evidence this range of positive course outcomes, but it is conjectured that LAs facilitate these outcomes through their frequent and engaging interactions with students. …
Socioeconomic Status And Its Relationship To Mathematics Achievement: Using A Meta-Analysis, Bitna Choi
Socioeconomic Status And Its Relationship To Mathematics Achievement: Using A Meta-Analysis, Bitna Choi
Doctoral Dissertations
Educational inequality mirrors broader societal disparities. There are various factors that represent educational inequality, such as socioeconomic status (SES), school environment, teacher quality, gender, and support services. Among these, SES is commonly used as a key indicator of educational inequality. Consistently, studies have shown that students from higher socioeconomic backgrounds have higher academic achievement (Johnson et al., 2022; Murphy, 2019; Tate, 1997). This disparity is particularly evident in mathematics, which is crucial for academic and career opportunities. The purpose of this dissertation is to examine the relationship between socioeconomic status (SES) and mathematics achievement of K-12 students. In addition, this …
Personal Device Use In Mathematics: An Investigation Into Access, Utilization, And Outcomes, Catherine Dennis
Personal Device Use In Mathematics: An Investigation Into Access, Utilization, And Outcomes, Catherine Dennis
Doctoral Dissertations
Personal devices, such as laptops, tablets, and smartphones, have become increasingly ubiquitous in undergraduate mathematics classrooms around the world. Moreover, the increased use of technology in educational contexts has provoked questions about equity in terms of student access, utilization, and the potential impact on outcomes (Hennessy & Dunham, 2008). This dissertation adds to the body of literature that addresses the overlap of personal device use and equity in undergraduate mathematics through three different methodological approaches: systematic review, quantitative inquiry, and qualitative exploration. The systematic review synthesizes 355 studies on personal device access, utilization, and outcomes in undergraduate mathematics. One key …
Improving Quality Of Experience With Http/3 And Extensible Prioritization Scheme, Abhinav Gupta
Improving Quality Of Experience With Http/3 And Extensible Prioritization Scheme, Abhinav Gupta
Doctoral Dissertations
The internet is an indispensable part of modern life, with billions of users accessing countless web pages daily. While loading speed is crucial, the overall Quality of Experience (QoE) significantly influences user satisfaction and engagement with websites. Incomplete or delayed page loading can lead to frustration, reduced site visits, and financial losses. In our preliminary study, we examined how network protocols like HTTP/2 and HTTP/3 impact both Quality of Service (QoS) and QoE by assessing throughput and six Lighthouse performance metrics. Our findings highlight the relationship between QoS and QoE, emphasizing the need for efficient resource scheduling and prioritization to …
Dimensions Of Green Crabs, Carcinus Maenas (Linnaeus 1785), And Oysters, Crassostrea Virginica (Gmelin 1791), In Great Bay Estuary, New Hampshire, Kelsey Meyer
Doctoral Dissertations
Invasive species may alter how an ecosystem functions, such as the Great Bay Estuary (GBE) inNew Hampshire. In GBE, an invasive species of particular interest is the green cab (Carcinus maenas) because historically (and currently) there are no mitigation or eradication plans that have been implemented. It is not well-known how green crabs are interacting with oysters in GBE, whether that be wild, restored, or aquacultured. The aim of this dissertation was to document NH oyster growers’ perspectives on the issue of green crabs and oyster predation, understand their abundance, distribution and diet among natural/restored oyster areas and oyster farms …
Dynamic Defense Strategies For Field Programmable Gate Array (Fpga) Security, Sandeep Sunkavilli
Dynamic Defense Strategies For Field Programmable Gate Array (Fpga) Security, Sandeep Sunkavilli
Doctoral Dissertations
Field Programmable Gate Arrays (FPGA) have gained popularity and usage in recent years, and they have been widely used in mission-critical applications. Due to its popularity, the security of FPGA has become a big concern. Most existing research on FPGA security focuses on hardware Trojans, side-channel attacks, and reverse engineering. The existing FPGA countermeasures against the attacks above are typically limited to the FPGA systems implemented in the old FPGA utilization model. An increase in cloud-based FPGA providers, third-party accelerator suppliers, and open-source FPGAdesign tools has changed the FPGA utilization model, which requires new security measures for modern FPGAs. This …
Analysis And Procedures For Conducting Laboratory And Field Dielectric Measurements For Asphalt Pavement Density Evaluation, Anh Tran
Doctoral Dissertations
Achieving proper asphalt concrete pavement density, through combination of rigorous field and laboratory practices, is one of the top priorities of state agencies and contractors due to its significant impact on pavement performance and longevity. The field and laboratory traditional methods have limitations and pose challenges in terms of equipment and measurements which can influence the accuracy and efficiency of pavement density evaluation. In the field, various methods such as field coring, nuclear and non-nuclear density gauges are costly, time-consuming and only provide limited coverage of density assessment. In the lab, methods for evaluating the bulk specific gravity (Gmb) of …
Investigation Of Elastin-Like Polymer Surfaces By Electrochemical Impedance Spectroscopy In Redox Mediated And Non-Redox Mediated Electrolytes, Stanley Grant Feeney
Investigation Of Elastin-Like Polymer Surfaces By Electrochemical Impedance Spectroscopy In Redox Mediated And Non-Redox Mediated Electrolytes, Stanley Grant Feeney
Doctoral Dissertations
As the biomedical engineering industry grows, so does the need for on-line, continuous monitoring of specific biomolecules in industrial bioreactors. Elastin-like polymers, a thermoresponsive, protein-based macromolecule that mimics the behavior of the naturally occurring elastin protein, may hold the answer in the form of their stimuli-responsive conformation change. Surface-bound ELPs still require characterization, especially under conditions relevant to on-line sensing in bioreactors. The protocol for fabricating ELP-modified electrodes needs to be fine-tuned for reproducibility, with careful consideration for physisorption. Additionally, bioreactors require carefully controlled environments, without the presence of exogenous reagents. Therefore, the stimuli-responsive behavior of ELPs will need to …
Design And Synthesis Of Single Atom Catalysts For Solar Fuel Generation, Allison Harper St. John
Design And Synthesis Of Single Atom Catalysts For Solar Fuel Generation, Allison Harper St. John
Doctoral Dissertations
Solar fuel generation from photocatalytic carbon dioxide (CO2) reduction is a growing area of interest to mitigate global energy and climate crises. Graphitic carbon nitride (C3N4) is a light-absorbing semiconductor with a promising outlook for solar fuels, gaining popularity in recent years due to its low cost and appropriate band positions for many environmentally relevant reactions. The addition of atomically dispersed single atom catalysts (SACs) to semiconducting materials is a viable strategy for creating active sites to improve photocatalytic performance of the semiconductors studied. Designing C3N4 materials as a support for SACs with well-defined binding motifs and sufficiently high concentrations …
Responding To Range Expansion: Assessing Insect Communities, Tree Decline Symptoms, And Tree Mortality Risk As The Southern Pine Beetle Moves North, Caroline Rachel Kanaskie
Responding To Range Expansion: Assessing Insect Communities, Tree Decline Symptoms, And Tree Mortality Risk As The Southern Pine Beetle Moves North, Caroline Rachel Kanaskie
Doctoral Dissertations
Climate change is shifting species distributions. In New England, warmer winters allow southern species to survive further north. The northward range expansion of the tree-killing southern pine beetle is the focus of this dissertation. Outbreaks of this beetle cause both ecological and economic damage, which threaten the globally rare pine barrens ecosystem. I used an interdisciplinary approach to study this insect: 1) I synthesized literature on the beetle’s natural enemies; 2) I used a suite of chemical attractants to investigate the insect community attracted to the beetle’s pheromones and assessed the diversity and abundance of its potential predators; 3) I …
Molecular Simulation Studies Of Peptide Transport Across The Mitochondrial Membrane, Son Nguyen
Molecular Simulation Studies Of Peptide Transport Across The Mitochondrial Membrane, Son Nguyen
Doctoral Dissertations
Molecular transport across membranes is an important biophysical process. Designing molecules capable of crossing cell membranes and targeting specific organelle is becoming necessary in treating many diseases and disorders. In recent decades, cell-penetrating peptides have been studied and utilized to deliver a variety of cargoes. My dissertation work focuses on studying the molecular details of the peptide translocation process across a cell membrane. Specifically, I investigated the dynamics of mitochondrial-targeting peptides and their mechanisms of translocation across the mitomembrane. I conducted molecular dynamics (MD) simulations of model mitochondrial-targeting peptides with distinct physical and chemical properties such as sequence lengths, functional …
A Random Forest Regression Approach For Prediction Of Specific Flux For Ultrafiltration Membranes, Isabel Medeiros
A Random Forest Regression Approach For Prediction Of Specific Flux For Ultrafiltration Membranes, Isabel Medeiros
Master's Theses and Capstones
Ultrafiltration (UF) membrane operation is strongly affected by fouling, where dissolved and suspended water quality constituents interact with each other and the membrane surface, leading to pore blockage. As a result, a fouled membrane loses filtration efficiency, reducing the volume of treated water produced and increasing operation and maintenance costs associated with membrane cleaning. At a Dutch full-scale facility in North Holland, fouling is indicated by both an increase in the amount of pressure required across the membrane, known as transmembrane pressure (TMP), and a decrease in permeability, represented by specific flux (SF). The facility performs hydraulic backwashing - both …
Investigating The Role Of Soundscape Properties And Genetic Material As Sentinel Indicators Of The Acoustic Environment In Gulf Of Maine Coastal Marine Ecosystems, Grant Alexander Milne
Investigating The Role Of Soundscape Properties And Genetic Material As Sentinel Indicators Of The Acoustic Environment In Gulf Of Maine Coastal Marine Ecosystems, Grant Alexander Milne
Doctoral Dissertations
ABSTRACT By identifying soundscape properties and taxa detected with metabarcoding that accurately predict substrate composition, assumptions about propagative properties of the environment can be rapidly formed without the use of active acoustic sensing or invasive environmental sampling techniques. “Sentinel indicators,” are variables, processes, or components within ecosystems that can be measured or quantified and have sensitivity to environmental pressures. Passive acoustic monitoring (PAM) and metabarcoding of seawater samples (MSS) are two minimally invasive potential methods of identifying sentinel indicators of soundscape and propagation properties of marine habitats by detecting the presence of marine taxa and extracting information from soundscapes. To …
Concord Monitor: One Year After Unh Protest, New Police Body Camera Footage Casts Doubt On Assault Charges Against Students, Jeremy Margolis
Concord Monitor: One Year After Unh Protest, New Police Body Camera Footage Casts Doubt On Assault Charges Against Students, Jeremy Margolis
Digital Edition
No abstract provided.
Understanding The Epigenetic Role Of Prmt5 Inhibitors In Rna Binding Proteins And Histones Involved In Merkel Cell Carcinoma Tumorigenesis., Devya Gurung
Master's Theses and Capstones
Merkel cell carcinoma (MCC) is a rare and aggressive neuroendocrine skin cancer with a 30% mortality rate. In the United States, 80% of MCC cases are linked to the integration of Merkel cell polyomavirus (MCPyV), while the remaining cases are associated with excessive ultraviolet (UV) exposure, leading to UV-induced DNA damage. The therapeutic targets for MCC remain largely unknown. Elevated expression of Protein Arginine Methyltransferase-5 (PRMT5) has been observed in various cancers. My research aims to investigate how arginine methylation impacts the regulatory mechanisms of RNA-binding proteins and histone residues during neuroendocrine transdifferentiation in MCC. Recent studies suggest that low …
A Remote Sensing Analysis Of Eastern Hemlock Decline In Hemlock Woolly Adelgid-Infested Stands In New Hampshire From 2000 – 2022, Molly Cahill
Master's Theses and Capstones
Eastern hemlock (Tsuga canadensis) is an ecologically-important tree species in the forests of eastern North America. This species is currently declining throughout much of its range due to the invasive insect species hemlock woolly adelgid (Adelges tsugae) and elongate hemlock scale (Fiorinia externa). The introduction of these insects in the region, in addition to drought, development, and native insect species, threatens the persistence of eastern hemlock on the eastern landscape. This study endeavored to use satellite remote sensing to assess eastern hemlock decline in New Hampshire currently and over time from 2000 to 2022. Several classifications were performed in order …
Electrical Potential Gradient Signals Associated With California Earthquakes, Terry Emil Battalino
Electrical Potential Gradient Signals Associated With California Earthquakes, Terry Emil Battalino
Master's Theses and Capstones
The purpose of this investigation is to determine whether or not there are any identifiable properties or characteristics in the measurements of the atmospheric electrical potential gradient prior to California earthquakes that could qualify as a precursor signal. Scientists from around the world have reported anomalous behavior in the potential gradient before earthquakes for more than 130 years. The only two previous reports on this subject involving California earthquakes and the potential gradient were inconclusive and based upon limited data. This present study examines an eleven-year database (2009-2019) of the potential gradient observed in the desert regions surrounding Ridgecrest, California …
Using Hyperspectral Uas To Map Hydrated Compounds In Martian Terrestrial Analog Systems, Andrew G. Fleming
Using Hyperspectral Uas To Map Hydrated Compounds In Martian Terrestrial Analog Systems, Andrew G. Fleming
Master's Theses and Capstones
Hypersaline lakes and playas in arid environments on Earth can serve as analogs for paleolake environments of interest on Mars because the hydrated compounds within these systems indicate the presence of ancient hydrologic networks and display strong relationships with microbial life. Traditional orbital observations map these compounds at spatial resolutions ranging from tens to hundreds of meters per pixel. This study uses in-situ measurements, Uncrewed Aerial Systems (UAS) hyperspectral mapping (10 cm), and EnMAP satellite hyperspectral mapping (30 m) to map heterogeneous mineralogical assemblages in hypersaline lakes in Southcentral British Columbia, Canada (BC). We tested the ability of high-resolution UAS …
Design And Development Of Systems For Wave-Soil-Structure Interaction Modelling In A Geotechnical Centrifuge, Mark Justin Adler
Design And Development Of Systems For Wave-Soil-Structure Interaction Modelling In A Geotechnical Centrifuge, Mark Justin Adler
Master's Theses and Capstones
As hurricanes, and therefore storm surges, become stronger on average, civil engineering research has increasingly focused on the impact of flooding on coastal communities. While hurricane-induced flood scour has been understood to be a mechanism of structural failure for decades, there is still not a complete model for scour in the near-coast environment. To build on the current body of scour research, an apparatus for the physical modelling of wave-soil-structure interactions has been developed for the University of New Hampshire geotechnical centrifuge laboratory. The new model container design is capable of wave generation, wave absorption, and the real-time measurement of …
Effects Of Foil Thickness And Trailing Edge Thickness On The Performance Of Cross-Flow Turbines, Katie Dold
Effects Of Foil Thickness And Trailing Edge Thickness On The Performance Of Cross-Flow Turbines, Katie Dold
Master's Theses and Capstones
The University of New Hampshire (UNH) and Ocean Renewable Power Company (ORPC) collaborated on the fabrication and testing of various blade shapes for cross-flow turbines (CFT). The UNH Wave and Tow Tank was used to test seven different 1.0 m scale, three-bladed cross-flow turbines with modified NACA 0018, 0021, and 0024 hydrofoil profiles with trailing edge thickness of 0.4%, 4.0%, and 8.0% of chord length. The effects of different foil thicknesses and trailing edge thicknesses on the performance of cross-flow turbines were examined motivated by factors such as manufacturability, cost, and structural integrity. These blades were constructed using a novel …
Methodology To Account For Rising Groundwater Within The Aashto 1993 Pavement Design Approach, Ahmad Mehrabi
Methodology To Account For Rising Groundwater Within The Aashto 1993 Pavement Design Approach, Ahmad Mehrabi
Master's Theses and Capstones
The increasing threat of climate change and sea level rise makes it important to have a more adaptive pavement design approach. The AASHTO 1993 pavement design method, used by 55% of U.S. state transportation agencies, assumes a constant subgrade modulus value. This simplification does not take into account the changing subgrade conditions that are affected by environmental factors like rising or fluctuating groundwater levels. This thesis presents a method to include changes in subgrade modulus due to groundwater level variations in the AASHTO 1993 framework, making the pavement design more accurate and reliable under changing conditions.The study begins with a …
Good Vibrations: Low-Frequency Anthropogenic Sound And Blue Mussel Recruitment, Kyrie Elise Newby
Good Vibrations: Low-Frequency Anthropogenic Sound And Blue Mussel Recruitment, Kyrie Elise Newby
Master's Theses and Capstones
Anthropogenic noise pollution is increasing in the world’s oceans, particularly along urbanized coastlines and global shipping routes. Many human activities, such as vessel traffic, pile driving, drilling, and other construction projects, produce loud low-frequency noise (Duarte et al. 2021). Marine invertebrates, including the blue mussel Mytilus edulis, sense sound through particle motion and may use acoustic signals as informational cues. While excessive noise has been shown to have negative physiological effects on adult and larval shellfish, Mytilidae larvae have also demonstrated a positive settlement response to some types of low-frequency anthropogenic noise (Solé et al. 2023). During the summer of …
King Stephen's War: Military Strategy In A Time Of Anarchy, Keith Sloan
King Stephen's War: Military Strategy In A Time Of Anarchy, Keith Sloan
Master's Theses and Capstones
This paper examines military strategy during the mid twelfth century civil war in England, the so-called “Anarchy.” It demonstrates that King Stephen and his Angevin opponents both employed what would be recognized today as strategy in their conduct of the war. It posits that the two largest factors influencing their respective strategies was the permeability of the English countryside, allowing the easy movement of military forces, and the expensive and time-consuming necessity of besieging castles to gain control of territory, the latter a reality of contemporary technology. Using concepts from the field of strategic studies, it demonstrates that, rather than …
Exploring The Dynamics Of Vibrio Parahaemolyticus Diversity In Developing Aquaculture Oyster Microbiomes, Benjamin John Wasson
Exploring The Dynamics Of Vibrio Parahaemolyticus Diversity In Developing Aquaculture Oyster Microbiomes, Benjamin John Wasson
Master's Theses and Capstones
Vibrio parahaemolyticus is a genetically diverse marine bacterium and the leading cause of seafood-borne bacterial illness in the United States. While most strains are harmless, some can cause illness. As oyster aquaculture grows in the Northeast, particularly in New Hampshire’s Great Bay Estuary (GBE), understanding the dynamics of V. parahaemolyticus population diversity and persistence is critical for public health and sustainable aquaculture production. This work investigates two major research questions: whether standard bacterial enumeration methods introduce bias when evaluating diversity of V. parahaemolyticus populations, and how environmental factors influence V. parahaemolyticus acquisition and microbiome development in juvenile oysters. We first …
Marine Oil Snow Settling Rates In Cold Water Environments, Quinn Richard Wilkins
Marine Oil Snow Settling Rates In Cold Water Environments, Quinn Richard Wilkins
Master's Theses and Capstones
Naturally forming marine snow has long been studied as a primary transport mechanism of organic carbon from the surface of the ocean to the benthic environments. Before the Deep Water Horizon oil spill, marine snow was not considered a significant transport mechanism for oil spilled at the surface. Interactions between sediment and oil have been studied in the past, however the study of Marine Oil Snow (MOS) is an emerging research topic to better understand the fate of spilled oil. A previous UNH graduate student, Jesse Ross, investigated the potential for spilled oil to interact with marine snow via field …
Per- And Polyfluoroalkyl Substances In A Suburbanizing Watershed, Bailey Mullins
Per- And Polyfluoroalkyl Substances In A Suburbanizing Watershed, Bailey Mullins
Master's Theses and Capstones
Per- and polyfluoroalkyl substances (PFAS) are persistent man-made chemicals that accumulate in aquatic environments due to their widespread industrial and commercial use and resistance to degradation. Understanding their spatial distribution and relative abundance in streams draining suburbanizing watersheds is crucial for effective watershed and water quality management. This study investigates how the concentrations and composition of PFAS in surface water and sediment are impacted by urbanization. PFAS were quantified in the Lamprey River watershed, a coastal watershed in southeastern New Hampshire that is experiencing ongoing suburbanization. Sampling sites include tributaries, mainstem, and estuarine areas. Surface water, sediment, and well water …
Office Of Research, Economic Engagement And Outreach Update, April 30, 2025, Office Of Research, Economic Engagement And Outreach
Office Of Research, Economic Engagement And Outreach Update, April 30, 2025, Office Of Research, Economic Engagement And Outreach
Office of Research, Economic Engagement and Outreach
No abstract provided.
Unh Grad Students Power Growth At Incline Analytics, Aaron Sanborn
Unh Grad Students Power Growth At Incline Analytics, Aaron Sanborn
UNH Today Archive
No abstract provided.