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2020

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Car Plate Detection Using Region-Based Convolutional Neural Networks, Shengyi Luan Dec 2020

Car Plate Detection Using Region-Based Convolutional Neural Networks, Shengyi Luan

Electrical Engineering Theses - Archive

Convolutional Neural Networks (CNN) comprise a deep learning technology which is widely used to perform image classification. In this research, we review CNN structures and explain how they can be used for finding license plates in vehicle images. We summarize how the standard CNN processes images into features and compare it to Region-Based Convolutional Neural Networks (R-CNN). After comparing their pros and cons, we decide to design a R-CNN to train our dataset for this project. We find that the one trained with the most training data has the highest testing accuracy. The first training network detector leads to the …


Generalized Algorithmic Frameworks For Optimizing Distance Calls In Generalized Metric Space Proximity Problems And Methods For Realizing Efficient Signal Reconstruction, Jees Augustine Dec 2020

Generalized Algorithmic Frameworks For Optimizing Distance Calls In Generalized Metric Space Proximity Problems And Methods For Realizing Efficient Signal Reconstruction, Jees Augustine

Computer Science and Engineering Dissertations - Archive

The exponential rise in data, along with its heterogeneity and complexity, helped individuals, businesses, hospitals, enterprises and even governments to thrive on data-driven decision making. However, as the size and complexity of the data surged, challenges in searching for similar objects within databases (proximity search) compounded. As is well known, proximity search is the key and successful method used in Information Retrieval (IR) in vast databases including, Genomics Databases, Image Databases, Video Databases, Text databases, etc. The objective is to retrieve contents from the database, similar to a given object in the database. This dissertation revisits a suite of popular …


Analiza E Efekteve Shëndetsore Gjatë Përdorimit Të Rrjetave Pa Tela Në Kushtet E Jetës Reale, Hashim Sahiti Dec 2020

Analiza E Efekteve Shëndetsore Gjatë Përdorimit Të Rrjetave Pa Tela Në Kushtet E Jetës Reale, Hashim Sahiti

Theses and Dissertations

Teknologjia Wireless u ideua në 1880 nga Alexander Graham Bell dhe Sumner Tainted kur u zbulua telefoni fotografik. Në ditët e sotme, ka shumë lloje të pajisjeve pa tela që përdoren për të komunikuar. Telefoni celular dhe Rrjeti Wireless janë pjesa e jetës sonë të përditshme në të gjithë botën. Pajisja Wi-Fi lejon shkëmbimin (marrjen dhe dërgimin) e të dhënave përmes pajisjeve pa tela dhe Wi-Fi lëshojnë valë radio. Pajisjet që përdorin Wi-Fi janë kompjuterët, tabletat, celularët, audio player, aparatet fotografikë digjital si dhe pajisjet përcjellëse te kompjuterit si printerët, tastiera, miu e etj. Pajisjet pa tela janë të bazuara …


Vitrina Virtuale E Librit, Genti Sheholli Dec 2020

Vitrina Virtuale E Librit, Genti Sheholli

Theses and Dissertations

Zhvillimi i aplikacioneve moderne në ditët e sotme nuk është vetëm proces i ndërtimit të aplikacionit. Procesi përfshin zhvillimin e shërbimeve në anën e serverit dhe aplikacionit në anën e klientit. Teknologjitë dhe opsionet për të zhvilluar një web aplikacion janë të shumta dhe varësisht se cfarë web aplikacioni duhet të zhvillohet mund të vendosim edhe për teknologjitë në secilin aspekt.

Qëllimi i këtij web aplikacioni është hulmtimi në teknologjit të kohës që kanë marrë hov të zhvillimit në aplikacionet moderne dhe hulumtim në zhvillimin e aplikacionit me struktura moderne.

Ky web aplikacion është një sintezë e proceseve, procedurave dhe …


Analizimi Dhe Zhvillimi I Sistemit Për Komunikim Në Telemjekësi Duke Përdorur Teknologjinë Webrtc, Fitim Mehmeti Dec 2020

Analizimi Dhe Zhvillimi I Sistemit Për Komunikim Në Telemjekësi Duke Përdorur Teknologjinë Webrtc, Fitim Mehmeti

Theses and Dissertations

Sistemet softuerike për komunikim në përgjithësi e në veçanti telemedicina që për qëllim ka ofrimin e kujdesit shëndetsor në distancë janë duke u bërë aset i rëndësishëm në shtetet e zhvilluara. Kufizimet në kohë, vendndodhja, kushtet atmosferike, tash së fundmi edhe pandemia COVID-19 janë ndër arsyet kryesore për zhvillimin e sistemeve të tilla. Ky punim është përqëndruar në hulumtimin, analizimin dhe krahasimin e sistemeve për komunikim online, mënyra se si funksionojnë këto sisteme, gjithashtu është fokusuar në zhvillimin e një aplikacioni për komunikim me video për pacientët dhe mjekët duke përdorur teknologjinë webRTC, ky projekt do të zhvillohet në bazë …


Ndikimi I Ueb Aplikacionit Dhe Aplikacionit Për Telefonë Në Menaxhimin Dhe Shperndarjen E Informacionit Në Ditët E Sotme, Jetmir Feka Dec 2020

Ndikimi I Ueb Aplikacionit Dhe Aplikacionit Për Telefonë Në Menaxhimin Dhe Shperndarjen E Informacionit Në Ditët E Sotme, Jetmir Feka

Theses and Dissertations

Në kohën tonë teknologjia po ecën me hapa shumë të shpejtë, sidomos në fushën e pajisjeve elektronike si: kompjuterët, tabletat, telefonat e mençur etj. Numri i përdoruesve të internetit dhe pajisjeve elektronike është shumë i madh dhe është në rritje të vazhdueshme. Qëllimi i këtij hulumtimi është identifikimi efektiv i strategjisë për zhvillimin e sistemit të menaxhimeve të portaleve online, si dhe efikasitetin në shpërndarjen e tyre. Një kompanie i nevojitet një sistem për menaxhim të lajmeve i cili është një element kryesor në zhvillimin e kompanisë. Shumica e kompanive mediatike sot kanë krijuar ueb-sajte online në mënyrë që punën …


Ndërtimi I Një "To-Do" Aplikacioni Me Teknologjinë Flutter, Emnolina Brahimi Dec 2020

Ndërtimi I Një "To-Do" Aplikacioni Me Teknologjinë Flutter, Emnolina Brahimi

Theses and Dissertations

Aplikacionet për telefon mobil viteve të fundit kanë filluar të zëvendësojnë shumë veprimtari që në të shkuarën i kemi bërë në mënyrë primitive te themi. Nevoja për të kursyer sa më shumë kohë, energji dhe para ka bërë që të krijohen aplikacione të ndryshme, inovative dhe mbi të gjitha aplikacione që ofrojnë zgjidhje të problemeve.

Smartphone-ët por edhe shumë pajisje të tjera elektronike si tabletet dhe smartwatch janë bërë aq të nevojshme sa që pothuajse secili person i rritur mund të posedoj një të tillë.

Duke parë kërkesën dhe nevojën në tregun tonë për zgjidhje të problemeve përmes aplikacioneve, si …


Implementimi I Devops Strategjisë Në Kompani Të Vogla Dhe Të Mesme, Diellza Shabani Dec 2020

Implementimi I Devops Strategjisë Në Kompani Të Vogla Dhe Të Mesme, Diellza Shabani

Theses and Dissertations

DevOps është një kornizë konceptuale për riintegrimin e zhvillimit dhe funksionimit të Sistemeve të Informacionit. Unë kam kryer një studim për strategjitë e ndryshme të implementimit të DevOps në kompani të ndryshme. Unë vërejta se DevOps nuk është studiuar në mënyrë adekuate në literaturën shkencore. Ekzistojnë relativisht pak kërkime në dispozicion në DevOps dhe studimet shpesh janë me cilësi të ulët. Unë gjithashtu vërejta që DevOps mbështetet nga një kulturë e bashkëpunimit, automatizimi, matje, shkëmbimi i informacionit dhe përdorimi i shërbimit në internet. DevOps përfiton nga SI dhe zhvillimi i operacioneve. Ajo gjithashtu ka efekte pozitive në zhvillimin e shërbimit …


Lyerja E Kushinetave Rrëshqitëse Dhe Rrokullisëse, Natyra Kololli Dec 2020

Lyerja E Kushinetave Rrëshqitëse Dhe Rrokullisëse, Natyra Kololli

Theses and Dissertations

Historia e kushinetave dhe e lubrifikimit është pothuajse aq e vjetër sa historia e njerëzimit. Forca kryesore lëvizëse që u lehtësoi njerëzve aktivitetet e përditshme, mirëpo duke ulur fërkimet. Këtu hyjnë në punë kushinetat, rëndësia e të cilave rritet me njohjen e lyerësve, e që është çështje me interes për të gjithë sepse kushinetat kanë nevojë për lubrifikim. Për të eksploruar botën, apo edhe më tej nevojiten pajisje mekanike që kërkojnë lubrifikim. Të gjithë kemi nevojë për lyerës, prandaj duhet të kemi njohuri për to sepse qoftë në shtëpitë tona ose në punë, kemi pajisje që kanë pjesë lëvizëse që …


Cybersecurity Of The Artificial Pancreas, D. J. Cooke, Andres Guzman, Robert Kinney, Christine Patterson, Josh Stone Dec 2020

Cybersecurity Of The Artificial Pancreas, D. J. Cooke, Andres Guzman, Robert Kinney, Christine Patterson, Josh Stone

Mathematics Senior Showcase 2020

We live in a world of cyber-enabled devices that enhance many aspects of life, including the treatment of diabetes. Type I Diabetes is a chronic autoimmune disorder characterized by destruction of pancreatic cells and subsequent deficiency of insulin - a crucial hormone in regulating blood glucose levels. The development of an Artificial Pancreas System is automating the maintenance of this disease by integrating wireless devices to continuously balance blood glucose levels without patient interaction. An integral part of this system is the Continuous Glucose Monitor (CGM) which wirelessly transmits blood glucose measurements every 5 minutes. CGMs and other Implantable Medical …


Construction Of A First Order Logic Theorem Prover, Luke Philip Tyler Dec 2020

Construction Of A First Order Logic Theorem Prover, Luke Philip Tyler

Mathematics Senior Showcase 2020

There are many systems that have been researched in the past on automating the process of theorem proving in first-order logic. This research explores one of these systems, the tableau method. A point of interest within the tableau method is whether or not the method is sound and complete. This research was done in tandem with a computer implementation of the tableau method written in Haskell. The basic design of the implementation was to construct a fair rule for tableau expansion and expand the tableau until it was found to be closed, open, or infinite, thereby proving or disproving of …


Exploring Student Perceptions Of Flipgrid In Online Courses, Patrick R. Lowenthal, Robert L. Moore Dec 2020

Exploring Student Perceptions Of Flipgrid In Online Courses, Patrick R. Lowenthal, Robert L. Moore

Educational Technology Faculty Publications and Presentations

Asynchronous video-based discussions have affordances that can address some of the constraints of asynchronous text-based discussions. However, little research has been conducted on the use of asynchronous video-based discussions in online courses. As a result, the purpose of this exploratory study was to investigate students’ perceptions of using Flipgrid for asynchronous video-based discussions in fully online courses. We used a cross-sectional survey design to survey 79 students who used Flipgrid in a fully online course. Students overall reported that they liked using Flipgrid, it was easy to use, and that it helped improve social presence. In this paper, we will …


Road Map Generation And Feature Extraction Algorithms From Gps Trajectories And Trajectories Data Warehousing, Tariq Alsahfi Dec 2020

Road Map Generation And Feature Extraction Algorithms From Gps Trajectories And Trajectories Data Warehousing, Tariq Alsahfi

Computer Science and Engineering Dissertations - Archive

Advanced technologies in location acquisition allow us to track the movement of moving objects (people, planes, vehicles, animals, ships, ..) in geographical space. These technologies generate a vast amount of trajectory data (TD). Several applica- tions in different fields can utilize such trajectory data, for example, traffic control management, social behavior analysis, wildlife migrations and movements, ship tra- jectories, shoppers behavior in a mall, facial nerve trajectory, location-based services (LBS) and many others. Fortunately, there are now many trajectory data sets avail- able that collected from moving objects such as cars with enabled GPS devices. Two main challenges arise when …


Adaptive Graph Convolutional Neural Network And Its Biomedical Applications, Ruoyu Li Dec 2020

Adaptive Graph Convolutional Neural Network And Its Biomedical Applications, Ruoyu Li

Computer Science and Engineering Dissertations - Archive

As the rise of graph neural networks, many deep learning frameworks have been extended to graph-structured data. The research in many diverse regimes have been tremendously reshaped, especially in areas like medical image understanding. When input data reach the scale of whole slides images (WSIs), the modeling becomes more challenging and we have to balance the trade-off between performance and efficiency. Furthermore, the theory of existing graph convolution has its own constraints which prevent learning robust graph representation on data that has diverse topological structure and are infeasible for graph sampling or coarsening. To tackle the problems we introduced a …


171st Commencement, Fall Dec 2020

171st Commencement, Fall

Commencement Programs

No abstract provided.


International Travel: A Quantitative And Qualitative Analysis About How Study Abroad Opportunities Enhance One’S Global Perspective And Self-Awareness, Kristen Zink Dec 2020

International Travel: A Quantitative And Qualitative Analysis About How Study Abroad Opportunities Enhance One’S Global Perspective And Self-Awareness, Kristen Zink

Undergraduate Honors Thesis Projects

As the world is becoming more interconnected, the importance of having a well-rounded, global education is necessary. To meet those needs, many students are electing to study abroad during their time in college. Although research has been done to examine the direct benefits of studying abroad, there has been little research done to differentiate the impacts of short-term and long-term study abroad. This research looked at how students reflected on both their short-term and long-term study abroad experiences and it examined the benefits of both lengths of travel. A quantitative analysis was done to analyze the benefits of short-term study …


Life, Character , Action, Mansour Baalbaki, Stephanie Broy Dec 2020

Life, Character , Action, Mansour Baalbaki, Stephanie Broy

Goal 4: Intrapersonal Intelligence Narrative

Purpose: Transitioning to IMSA is a time of new choices, responsibility, and freedom. As a result, sometimes, students’ intentions are not always the best for the individual or the situation. Throughout the IMSA experience, students are caught in the middle of the new community’s values in which they live. Students internalize what they see their peers and role models doing and decide how to live their own lives. Every interaction that students have during their IMSA years affects how they see themselves and how they see others—helping students understand why character matters will allow them to value kindness, cooperation, sharing, …


Socio-Hydrology: An Interplay Of Design And Self-Organization In A Multilevel World, Vicken Hillis Dec 2020

Socio-Hydrology: An Interplay Of Design And Self-Organization In A Multilevel World, Vicken Hillis

Human-Environment Systems Research Center Faculty Publications and Presentations

The emerging field of socio-hydrology is a special case of social-ecological systems research that focuses on coupled human-water systems, exploring how the hydrologic cycle and human cultural traits coevolve and how such coevolutions lead to phenomena of relevance to water security and sustainability. As such, most problems tackled by socio-hydrology involve some aspects of engineering design, such as large-scale water infrastructure, and self-organization in a broad context, such as cultural change at the population level and the hydrologic shift at the river basin or aquifer level. However, within the field of socio-hydrology, it has been difficult to find general theories …


Documenting Social Media Engagement As Scholarship: A New Model For Assessing Academic Accomplishment For The Health Professions, Kimberly D. Acquaviva, Josh Mugele, Natasha Abadilla, Tyler Adamson, Samantha L. Bernstein, Rakhee K. Bhayani, Annina Elisabeth Büchi, Darcy Burbage, Christopher L. Carroll, Samantha P. Davis, Natasha Dhawan, Alice Eaton, Kim English, Jennifer T. Grier, Mary K. Gurney, Emily S. Hahn, Heather Haq, Brendan Huang, Shikha Jain, Jin Jun, Wesley T. Kerr, Timothy Keyes, Amelia R. Kirby, Marion Leary, Mollie Marr, Ajay Major, Jason V. Meisel, Erika A. Petersen, Barak Raguan, Allison Rhodes, Deborah D. Rupert, Nadia A. Sam-Agudu, Naledi Saul, Jarna R. Shah, Lisa Kennedy Sheldon, Christian T. Sinclair, Kerry Spencer, Natalie H. Strand, Carl G. Streed Jr., Avery M. Trudell Dec 2020

Documenting Social Media Engagement As Scholarship: A New Model For Assessing Academic Accomplishment For The Health Professions, Kimberly D. Acquaviva, Josh Mugele, Natasha Abadilla, Tyler Adamson, Samantha L. Bernstein, Rakhee K. Bhayani, Annina Elisabeth Büchi, Darcy Burbage, Christopher L. Carroll, Samantha P. Davis, Natasha Dhawan, Alice Eaton, Kim English, Jennifer T. Grier, Mary K. Gurney, Emily S. Hahn, Heather Haq, Brendan Huang, Shikha Jain, Jin Jun, Wesley T. Kerr, Timothy Keyes, Amelia R. Kirby, Marion Leary, Mollie Marr, Ajay Major, Jason V. Meisel, Erika A. Petersen, Barak Raguan, Allison Rhodes, Deborah D. Rupert, Nadia A. Sam-Agudu, Naledi Saul, Jarna R. Shah, Lisa Kennedy Sheldon, Christian T. Sinclair, Kerry Spencer, Natalie H. Strand, Carl G. Streed Jr., Avery M. Trudell

Respiratory Therapy Faculty Publications and Presentations

Background: The traditional model of promotion and tenure in the health professions relies heavily on formal scholarship through teaching, research, and service. Institutions consider how much weight to give activities in each of these areas and determine a threshold for advancement. With the emergence of social media, scholars can engage wider audiences in creative ways and have a broader impact. Conventional metrics like the h-index do not account for social media impact. Social media engagement is poorly represented in most curricula vitae (CV) and therefore is undervalued in promotion and tenure reviews.

Objective: The objective was to develop crowdsourced guidelines …


Geochemistry, Petrology, And Palynology Of The Princess No. 3 Coal, Greenup County, Kentucky, Madison M. Hood, Cortland F. Eble, James C. Hower, Shifeng Dai Dec 2020

Geochemistry, Petrology, And Palynology Of The Princess No. 3 Coal, Greenup County, Kentucky, Madison M. Hood, Cortland F. Eble, James C. Hower, Shifeng Dai

Center for Applied Energy Research Faculty and Staff Publications

The high volatile C bituminous-rank, Bolsovian-age Princess No. 3 coal, a correlative of the heavily-mined Hazard No. 7 coal and the Peach Orchard and Coalburg Lower Split coals, was investigated three sites at a mine in Greenup County, Kentucky. The coal exhibits a “dulling upwards” trend, with decreasing vitrinite and a greater tendency towards dull clarain and bone lithotypes towards the top of the coal. The relatively vitrinite-rich basal lithotype is marked by a dominance of lycopod tree spores. The palynology transitions upwards to a middle parting co-dominated by tree fern and small lycopod spores and an upper bench dominated …


Iowa Waste Reduction Center Newsletter, December 2020, University Of Northern Iowa. Iowa Waste Reduction Center. Dec 2020

Iowa Waste Reduction Center Newsletter, December 2020, University Of Northern Iowa. Iowa Waste Reduction Center.

Iowa Waste Reduction Center Newsletter

Contents:

--- IWRC End of 2020 Director Address
--- IWRC Providing Compressed Air Assessment and Lighting Analysis
--- Iowa DNR creates EASY Air Equipment Deactivation Form
--- Industry News


Racial Diversity In Aviation, Lindsay Stevenson, Haydee M. Cuevas, Katie S. Kirkpatrick Dec 2020

Racial Diversity In Aviation, Lindsay Stevenson, Haydee M. Cuevas, Katie S. Kirkpatrick

Student Works

Commercial aviation has grown rapidly since the 1950s yet racial diversity in the aviation workforce has showed little progress. To explore this issue, this archival study was conducted to examine the representation of Black individuals in aviation occupations and other specialized professions from 2009 to 2018. Data were obtained from the American Community Survey using Public Use Microdata Sample from the United States Census Bureau. The frequency count and percent were calculated each year for each occupation by race (White or Black). Five aviation occupations were selected for comparison: aircraft pilot and flight engineer; air traffic controller and airfield operations …


Video Based Automatic Speech Recognition Using Neural Networks, Alvin Lin Dec 2020

Video Based Automatic Speech Recognition Using Neural Networks, Alvin Lin

Master's Theses

Neural network approaches have become popular in the field of automatic speech recognition (ASR). Most ASR methods use audio data to classify words. Lip reading ASR techniques utilize only video data, which compensates for noisy environments where audio may be compromised. A comprehensive approach, including the vetting of datasets and development of a preprocessing chain, to video-based ASR is developed. This approach will be based on neural networks, namely 3D convolutional neural networks (3D-CNN) and Long short-term memory (LSTM). These types of neural networks are designed to take in temporal data such as videos. Various combinations of different neural network …


Interplanetary Trajectory Optimization With Automated Fly-By Sequences, Emily Ann Doughty Dec 2020

Interplanetary Trajectory Optimization With Automated Fly-By Sequences, Emily Ann Doughty

Master's Theses

Critical aspects of spacecraft missions, such as component organization, control algorithms, and trajectories, can be optimized using a variety of algorithms or solvers. Each solver has intrinsic strengths and weaknesses when applied to a given optimization problem. One way to mitigate limitations is to combine different solvers in an island model that allows these algorithms to share solutions. The program Spacecraft Trajectory Optimization Suite (STOpS) is an island model suite of heterogeneous and homogeneous Evolutionary Algorithms (EA) that analyze interplanetary trajectories for multiple gravity assist (MGA) missions. One limitation of STOpS and other spacecraft trajectory optimization programs (GMAT and Pygmo/Pagmo) …


Emergency Landing And Guidance System, Joseph Alarid Dec 2020

Emergency Landing And Guidance System, Joseph Alarid

Master's Theses

Every year there are thousands of aviation accidents along with hundreds of human deaths that happen around the world. While the data is sparse, it is well documented that many of these happen from emergency landings gone awry. While pilots can generally make great landings in clear daytime conditions, they are significantly handicapped when it comes to landing at night or amongst poor visibility conditions.

Due to the nature of this problem and some of the large scale advances in software technology we propose a solution that provides a significant improvement from the status quo. Using transfer learning on neural …


Attentional Parsing Networks, Marcus Karr Dec 2020

Attentional Parsing Networks, Marcus Karr

Master's Theses

Convolutional neural networks (CNNs) have dominated the computer vision field since the early 2010s, when deep learning largely replaced previous approaches like hand-crafted feature engineering and hierarchical image parsing. Meanwhile transformer architectures have attained preeminence in natural language processing, and have even begun to supplant CNNs as the state of the art for some computer vision tasks.

This study proposes a novel transformer-based architecture, the attentional parsing network, that reconciles the deep learning and hierarchical image parsing approaches to computer vision. We recast unsupervised image representation as a sequence-to-sequence translation problem where image patches are mapped to successive layers …


Phantom Ocean, Real Impact: Natural Surf Sound Experiments Alter Foraging Activity And Habitat Use Across Taxa, Ryan N. Wardle Dec 2020

Phantom Ocean, Real Impact: Natural Surf Sound Experiments Alter Foraging Activity And Habitat Use Across Taxa, Ryan N. Wardle

Master's Theses

A growing body of research focuses on how background sounds shape and alter critical elements of animals’ lives, such as foraging behavior, habitat use, and ecological interactions (Bradbury & Vehrencamp, 2011; Barber et al., 2010; Kight & Swaddle, 2011; Shannon et al., 2016). Much of this research has centered on the effects of anthropogenic noise (Dominoni et al., 2020; Francis & Barber, 2013; Ortega, 2012; Swaddle et al., 2015), but recent studies have also revealed that natural sound sources can influence animal behavior (Davidson et al., 2017; Le et al., 2019). Natural sounds, such as crashing surf, can create conditions …


Spacecraft Trajectory Optimization Suite (Stops): Design And Optimization Of Multiple Gravity-Assist Low-Thrust (Mgalt) Trajectories Using Modern Optimization Techniques, Michael G. Malloy Dec 2020

Spacecraft Trajectory Optimization Suite (Stops): Design And Optimization Of Multiple Gravity-Assist Low-Thrust (Mgalt) Trajectories Using Modern Optimization Techniques, Michael G. Malloy

Master's Theses

The information presented in the thesis is a continuation of the Spacecraft Trajectory Optimization Suite (STOpS). This suite was originally designed and developed by Timothy Fitzgerald and further developed by Shane Sheehan, both graduate students at California Polytechnic State University, San Luis Obispo. Spacecraft utilizing low-thrust transfers are becoming more and more common due to their efficiency on interplanetary trajectories, and as such, finding the most optimal trajectory between two planets is something of interest. The version of STOpS presented in this thesis uses Multiple Gravity-Assist Low-Thrust (MGALT) trajectories paired with the island model paradigm to accomplish this goal. The …


B-Plane Targeting With The Spacecraft Trajectory Optimization Suite, Jared Graef Dec 2020

B-Plane Targeting With The Spacecraft Trajectory Optimization Suite, Jared Graef

Master's Theses

In interplanetary trajectory applications, it is common to design arrival trajectories based on B-plane target values. This targeting scheme, B-plane targeting, allows for specific target orbits to be obtained during mission design. A primary objective of this work was to implement B-plane targeting into the Spacecraft Trajectory Optimization Suite (STOpS). This work was based on the previous versions of STOpS done by Fitzgerald and Sheehan, however STOpS was redeveloped from MATLAB to python. This updated version of STOpS implements 3-dimensional computation, departure and arrival orbital phase modeling with patched conics, B-plane targeting, and a trajectory correction maneuver. The optimization process …


Incorporating Shear Resistance Into Debris Flow Triggering Model Statistics, Noah J. Lyman Dec 2020

Incorporating Shear Resistance Into Debris Flow Triggering Model Statistics, Noah J. Lyman

Master's Theses

Several regions of the Western United States utilize statistical binary classification models to predict and manage debris flow initiation probability after wildfires. As the occurrence of wildfires and large intensity rainfall events increase, so has the frequency in which development occurs in the steep and mountainous terrain where these events arise. This resulting intersection brings with it an increasing need to derive improved results from existing models, or develop new models, to reduce the economic and human impacts that debris flows may bring. Any development or change to these models could also theoretically increase the ease of collection, processing, and …