Digital Commons Network^™

Generating Exploration Mission-3 Trajectories To A 9:2 Nrho Using Machine Learning, Esteban Guzman

Master's Theses

The purpose of this thesis is to design a machine learning algorithm platform that provides expanded knowledge of mission availability through a launch season by improving trajectory resolution and introducing launch mission forecasting. The specific scenario addressed in this paper is one in which data is provided for four deterministic translational maneuvers through a mission to a Near Rectilinear Halo Orbit (NRHO) with a 9:2 synodic frequency. Current launch availability knowledge under NASA’s Orion Orbit Performance Team is established by altering optimization variables associated to given reference launch epochs. This current method can be an abstract task and relies on …

Tools For The Investigation Of Reduced Exercise Capacity In Fontan Patients, Akash Gupta

All Theses

Univentricular heart defects represent one of the most complex forms of congenital heart defects, which left untreated, is fatal. Univentricular patients typically undergo three highly invasive surgeries that culminate in the Fontan procedure. The Fontan physiology is associated with several long-term complications, one of which is reduced exercise capacity. Previous studies have found an empirical correlation between the fluid power losses in the Fontan junction (indexed to body size and flow rate), and reduced exercise capacity. There is evidence suggesting that the narrowing of vessels in the Fontan junction results in increased indexed power loss and lowered exercise capacity. Several …

Functional Central Limit Theorem For Additive Functionals Associated To The Generalized Nelson Hamiltonian, Soumaya Gheryani, Achref Majid, Habib Ouerdiane

Communications on Stochastic Analysis

No abstract provided.

Stochastic Differential Equations With Anticipating Initial Conditions, Hui-Hsiung Kuo, Sudip Sinha, Jiayu Zhai

Communications on Stochastic Analysis

No abstract provided.

Research Incentive Programs For Closures Of Public And Private Grade Crossings, Julius Codjoe

Data

Corresponding data set for Tran-SET Project No. 17PPLSU13. Abstract of the final report is stated below for reference:

"Vehicle-train crashes that occur at highway-rail crossings result in injuries, fatalities, and damage to equipment. In order to reduce the number of vehicle-train crashes, Federal Railroad Administration requires states which have challenges with crossing safety, including Louisiana, to develop a State Action Plan to improve grade crossing safety. Consequently, identification of specific solutions for improving safety at crossings was included in the 2015 Louisiana Transportation Plan as one of its objectives. This study seeks to identify and evaluate current and new incentive …

A Low-Intensity, Hybrid Design Between A "Traditional" And A "Course-Based" Research Experience Yields Positive Outcomes For Science Undergraduate Freshmen And Shows Potential For Large-Scale Application, Thushani Rodrigo-Peiris, Lin Xiang, Vincent M. Cassone

Biology Faculty Publications

Based on positive student outcomes, providing research experiences from early undergraduate years is recommended for science, technology, engineering, and mathematics (STEM) majors. To this end, we designed a novel research experience called the “STEMCats Research Experience” (SRE) for a cohort of 119 second-semester freshmen with diverse college preparatory levels, demographics, and academic majors. The SRE targeted student outcomes of enhancing retention in STEM majors, STEM competency development, and STEM academic performance. It was designed as a hybrid of features from apprenticeship-based traditional undergraduate research experience and course-based undergraduate research experience designs, considering five factors: 1) an authentic research experience, 2) …

Models For Networks With Consumable Resources: Applications To Smart Cities, Hayato Montezuma Ushijima-Mwesigwa

All Dissertations

In this dissertation, we introduce different models for understanding and controlling the spreading dynamics of a network with a consumable resource. In particular, we consider a spreading process where a resource necessary for transit is partially consumed along the way while being refilled at special nodes on the network. Examples include fuel consumption of vehicles together with refueling stations, information loss during dissemination with error correcting nodes, consumption of ammunition of military troops while moving, and migration of wild animals in a network with a limited number of water-holes. We undertake this study from two different perspectives. First, we consider …

On Some Environmental Applications Of Stochastic Processes, Liu Zhu

All Dissertations

This dissertation focuses on the study of some environmental applications of stochastic processes. In the first Chapter, we study an extreme value time series, where the extremes are derived using the block maxima/minima method. In extreme value analyses, the block maxima/minima are typically assumed to be statistically independent from block to block. However, extreme data arising from applications often present significant correlations. The main result of the chapter is to develop a simple and efficient method to estimate extreme model parameters and compute standard errors for them that account for correlation. More precisely, we develop a likelihood for sequences of …

Cyber Physical System Security — Dos Attacks On Synchrophasor Networks In The Smart Grid, Xingsi Zhong

All Dissertations

With the rapid increase of network-enabled sensors, switches, and relays, cyber-physical system security in the smart grid has become important. The smart grid operation demands reliable communication. Existing encryption technologies ensures the authenticity of delivered messages. However, commonly applied technologies are not able to prevent the delay or drop of smart grid communication messages. In this dissertation, the author focuses on the network security vulnerabilities in synchrophasor network and their mitigation methods. Side-channel vulnerabilities of the synchrophasor network are identified. Synchrophasor network is one of the most important technologies in the smart grid transmission system. Experiments presented in this dissertation …

Agent Based Terrain Generator: Cruthú, Lawrence L. O'Boyle

Masters Theses

Terrain generation models are applied in different industries and fields of study. Current techniques assist in planning transportation networks, visualizing population migrations, conducting epidemiology research, and training self-driving cars and drones. Many current applications and research models generate complex realistic artifacts, e.g., trees, rivers, coastlines, populations, and even cities. Unfortunately, most of these techniques are described and implemented separately. Techniques do not work together to generate a complete holistic view. This thesis proposes a model, Cruthú (Gaelic for "creation"), that provides a novel platform allowing for complete world generation by integrating existing research and algorithms. The model is inspired by …

Special Area Teachers’ Perceptions Of Performance Evaluation Feedback And Professional Development Provided, Christy Isaacs

All Theses And Dissertations

There is significant research showing that teachers are motivated to grow intrinsically through the feedback and professional development opportunities they receive from their principals following the evaluation cycle. The quality of this feedback greatly influences their willingness to continuously improve their practices. However, limited research exists on whether special area teachers receive meaningful feedback and professional development opportunities from their principals, who may lack specialized content knowledge, following their evaluations.

The primary purpose of this qualitative study was to explore special area teachers’ perceptions of the feedback and professional development opportunities their principals provided following the evaluation cycle. Participants included …

Data On Spectrum-Based Fluorescence Resonance Energy Transfer Measurement Of E. Coli Multidrug Transporter Acrb, Yuguang Cai, Thomas E. Wilkop, Yinan Wei

Chemistry Faculty Publications

This paper presented the dataset of correction parameters used in the determination of the energy transfer efficiencies from the spectrum-based fluorescence resonance energy transfer (FRET) measurement in a trimeric membrane protein AcrB. The cyan fluorescent protein (CFP) and yellow fluorescent protein (YPet) were used as the donor and acceptor, respectively. Two AcrB fusion proteins were constructed, AcrB-CFP and AcrB-YPet. The proteins were co-expressed in Escherichia coli cells, and energy transfer efficiency were determined in live cells. To obtain reliable energy transfer data, a complete set of correction parameters need to be first determined to accommodate for factors such as background …

Review Of: The World Of Scary Video Games: A Study In Videoludic Horror, Approaches To Digital Game Studies, Matthew Murray

Library Faculty Research

No abstract provided.

Global Renewable And Nonrenewable Energy Use Impact Assessment Of U.S. Manufacturing: An Integrated Cradle-To-Gate Lca And Dea Approach, Bahadir Ezici

Master's Theses

In this thesis, U.S. manufacturing industries` global supply chain-linked energy use and economic output are investigated considering a total of 16 renewable and nonrenewable energy carriers. A multiregion input output (MRIO) framework is employed to conduct the global supply chain-linked energy use impact assessment. The study period was between 1995 and 2014 based on data availability. Thus, 20 MRIO models were developed. Each MRIO model consists of the 40 largest economies of the world and the rest of the world (ROW) as the 41st country. Each country’s economy was structured into 35 manufacturing and service industries based on the Worth …

Using Offline Activities To Enhance Online Cybersecurity Education, Sarah Padlipsky

Master's Theses

Since the beginning of the 21st century, the United States has experienced the impact of a technological revolution. One effect of this technological revolution is the creation of entirely new careers related to the field of technology, including cybersecurity. Continued growth in the cybersecurity industry means a greater number of jobs will be created, adding to the existing number of jobs that are challenging an under-educated and under-trained workforce. The goal of this thesis is to increase the effectiveness of cybersecurity education. This thesis studies whether an online course in cybersecurity can be enhanced by offline, in-person activities that mirror …

Cultural Naturalism And The Market God, David Timothy Denenny

Theses

This work employs John Dewey's cultural naturalism to explore how and why the orthodox economic tradition functions as a religious faith.Scholars such as the theologian Harvey Cox and others now view orthodox economic practice as a religion. Other scholars such as Max Weber, Alasdair MacIntyre, and numerous others view modern economic practice as exemplifying a particular ethic. The focus in this work is placed upon the destructive consequences of practicing the Market faith. This work argues that much of contemporary economic practice maintains a view of science that is incompatible with the kind of naturalism found in Classical American Pragmatism. …

Spectral Sensitivity In Ray-Finned Fishes: Diversity, Ecology And Shared Descent, Lorian E. Schweikert, Robert R. Fitak, Eleanor M. Caves, Tracey Sutton, Sonke Johnsen

Marine & Environmental Sciences Faculty Articles

A major goal of sensory ecology is to identify factors that underlie sensory-trait variation. One open question centers on why fishes show the greatest diversity among vertebrates in their capacity to detect color (i.e. spectral sensitivity). Over the past several decades, λ_max values (photoreceptor class peak sensitivity) and chromacy (photoreceptor class number) have been cataloged for hundreds of fish species, yet the ecological basis of this diversity and the functional significance of high chromacy levels (e.g. tetra- and pentachromacy) remain unclear. In this study, we examined phylogenetic, physiological and ecological patterns of spectral sensitivity of ray-finned fishes (Actinoptergyii) via …

Coefficient Of Variation From Vegetation Index For Sugarcane Population And Stalk Evaluation, Saoli Chanda, Yumiko Kanke, Marilyn Dalen, Jeffrey Hoy, Brenda Tubana

Faculty Publications

Core Ideas: Variety and planting material affect cane population and millable stalk production. Coefficient of variation from sensor readings decreases as cane canopy closes. Cane varieties for sugar and energy production differ greatly in canopy structure. Canopy structure influences sensor-based profiling of cane population and stalk. Coefficient of variation (CV) is a statistical measure of variability in data. This study was conducted to evaluate the relationship of CV computed from Vegetation Indices (VIs) with plant population and millable stalk of different sugarcane (Saccharrum spp.) varieties. Two experiments consisted of six cane varieties and two types of planting material (whole stalks …

Stochastic Lagrangian Formulations For Damped Navier-Stokes Equations And Boussinesq System, With Applications, Kazuo Yamazaki

Communications on Stochastic Analysis

No abstract provided.

Generalized Random Fields And Lévy's Continuity Theorem On The Space Of Tempered Distributions, Hermine Biermé, Olivier Durieu, Yizao Wang

Communications on Stochastic Analysis

No abstract provided.

On A Stochastic 2d Simplified Liquid Crystal Model Driven By Jump Noise, T. Tachim Medjo

Communications on Stochastic Analysis

No abstract provided.

New Filters For The Calibration Of Regime Switching Beta Dynamics, Robert J. Elliott, Carlton Osakwe

Communications on Stochastic Analysis

No abstract provided.

Non-Continuous Double Barrier Reflected Bsdes With Jumps Under A Stochastic Lipschitz Coefficient, Mohamed Marzougue, Mohamed El Otmani

Communications on Stochastic Analysis

No abstract provided.

The Restriction Principle And Commuting Families Of Toeplitz Operators On The Unit Ball, Matthew Dawson, Gestur Ólafsson, Raúl Quiroga-Barranco

Faculty Publications

On the unit ball Bn we consider the weighted Bergman spaces HΛ2(Bn) and their Toeplitz operators with bounded symbols. It is known from our previous work that if a closed subgroup H of SU (n, 1) ~ has a multiplicity-free restriction for the holomorphic discrete series of SU (n, 1) ~ , then the family of Toeplitz operators with H-invariant symbols pairwise commute. In this work we consider the case of maximal abelian subgroups of SU (n, 1) ~ and provide a detailed proof of the pairwise commutativity of the corresponding Toeplitz operators. To achieve this we explicitly develop the …

On The Electric-Magnetic Duality Symmetry: Quantum Anomaly, Optical Helicity, And Particle Creation, Iván Agulló, Adrián Del Río, José Navarro-Salas

Faculty Publications

It is well known that not every symmetry of a classical field theory is also a symmetry of its quantum version. When this occurs, we speak of quantum anomalies. The existence of anomalies imply that some classical Noether charges are no longer conserved in the quantum theory. In this paper, we discuss a new example for quantum electromagnetic fields propagating in the presence of gravity. We argue that the symmetry under electric-magnetic duality rotations of the source-free Maxwell action is anomalous in curved spacetimes. The classical Noether charge associated with these transformations accounts for the net circular polarization or the …

Erythrocyte N-6 Fatty Acids And Risk For Cardiovascular Outcomes And Total Mortality In The Framingham Heart Study, William S. Harris, Nathan L. Tintle, Ramachandran S. Vasan

Faculty Work Comprehensive List

Background: The prognostic value of erythrocyte levels of n-6 fatty acids (FAs) for total mortality and cardiovascular disease (CVD) outcomes remains an open question. Methods: We examined cardiovascular (CV) outcomes and death in 2500 individuals in the Framingham Heart Study Offspring cohort without prevalent CVD (mean age 66 years, 57% women) as a function of baseline levels of different length n-6 FAs (18 carbon, 20 carbon, and 22 carbon) in the erythrocyte membranes. Clinical outcomes were monitored for up to 9.5 years (median follow up, 7.26 years). Cox proportional hazards models were adjusted for a variety of demographic characteristics, clinical …

Use Of Pv/T Panels To Meet The Building Loads Of Light Commercialized Buildings, Sadhvi Arora

Masters Theses and Doctoral Dissertations

This thesis deals with the analysis of a Photo Voltaic Thermal (PV/T) panel that is capable of producing simultaneously electric power and low-grade heat energy by absorbing the solar energy striking on its surface. A simple mathematical model is developed to estimate the electric power and heat energy gained by the PV/T panel. A water-to-water heat pump is employed that operates by absorbing the low-grade heat energy obtained from PV/T panel, in its evaporator, in order to produce high temperature hot water in its condenser. The high temperature hot water thus produced can be employed to meet the winter heating …

Leadership In Building Communities: Roosevelt Neighborhood, Fitz Center For Leadership In Community, University Of Dayton

Dayton Neighborhood Studies

No abstract provided.

Financial Intermediation Chains In An Otc Market, Ji Shen, Bin Wei, Hongjun Yan

College of Business Faculty and Staff Works

This paper analyzes financial intermediation chains in a search model with an endogenous intermediary sector. We show that the chain length and price dispersion among interdealer trades are decreasing in search cost, search speed, and market size but increasing in investors' trading needs. Using data from the U.S. corporate bond market, we find evidence broadly consistent with these predictions. Moreover, as search speed approaches infinity, the search equilibrium does not always converge to the centralized-market equilibrium: prices and allocation converge, but the trading volume might not. Finally, we analyze the multiplicity and stability of the equilibrium.

Iba Career Development Center Newsletter 2018 (August–December), Iba Cdc

CDC Newsletter

The 2018 IBA CDC E-Newsletter (August–December) highlights key initiatives in career development, including corporate engagement sessions, experiential learning projects, and recruitment drives. It showcases efforts to strengthen academia–industry linkages through ICLAB, the launch of the IBA Job Portal, and mentoring and counseling programs aimed at enhancing student employability and professional growth.