Digital Commons Network^™

Analysis Of Sustainable Development Indicators Through Neutrosophic Correlation Coefficients, Jesús Estupiñán Ricardo, Ariel José Romero Fernández, Tanya Tupamara Camargo Martínez, Wilson Alfredo Cacpata Calle

Neutrosophic Sets and Systems

No abstract provided.

Application Of Neutrosophy In The Study Of The Factors That Influence Ecuadorian Tourism Development, Sharon Diznarda Álvarez Gómez, Ariel José Romero Fernández, Manuel Ricardo Rivas Bravo

Neutrosophic Sets and Systems

No abstract provided.

Neutrosophic Genetic Algorithm For Solving The Vehicle Routing Problem With Uncertain Travel Times, Rafael Rojas-Gualdron, Florentin Smarandache

Neutrosophic Sets and Systems

No abstract provided.

Investigation Of Gaas Double Heterostructures For Photonic Heat Engines, Nathan Giannini-Hutchin

Optical Science and Engineering ETDs

The creation of a laser cooled semiconductor device has been a long sought achievement. GaAs-based devices have emerged as a promising candidate for the realization of this goal. Efforts to improve the efficiency of such devices have enabled the material to exhibit external quantum efficiencies (EQE, a measure of the probability that an excitation leads to the emission of a photon) of 99.5\%. Despite this impressive feat, a laser coolable device remains elusive.

To investigate the obstacles to such a device, the material characteristics of GaAs-based double heterostructures (DHS) are theoretically and experimentally examined. Through this study, a GaAs $\vert$ …

High-Precision Estimation Of Emitter Positions Using Bayesian Grouping Of Localizations, Mohamadreza Fazel, Michael J. Wester, David J. Schodt, Sebastian Restrepo Cruz, Sebastian Strauss, Florian Schueder, Thomas Schlichthaerle, Jennifer M. Gillette, Diane S. Lidke, Bernd Rieger, Ralf Jungmann, Keith A. Lidke

Pathology Research and Scholarship

Single-molecule localization microscopy super-resolution methods rely on stochastic blinking/binding events, which often occur multiple times from each emitter over the course of data acquisition. Typically, the blinking/binding events from each emitter are treated as independent events, without an attempt to assign them to a particular emitter. Here, we describe a Bayesian method of inferring the positions of the tagged molecules by exploring the possible grouping and combination of localizations from multiple blinking/binding events. The results are position estimates of the tagged molecules that have improved localization precision and facilitate nanoscale structural insights. The Bayesian framework uses the localization precisions to …

Social Presence As A Predictor Of Social Construction Of Knowledge In Discussion Forums In Asynchronous Online Higher Education Courses, Austin Megli

Organization, Information and Learning Sciences ETDs

The three research papers completed and compiled to make up this dissertation explore the relationship between social presence and social construction of knowledge in asynchronous online discussion forums in higher education courses in the instructional technology field. Paper 1 is a literature review of the interaction analysis model (IAM) (Gunawardena et al., 1997) as a methodology, which is used to measure and determine the social construction of knowledge in online discussion forums. This literature review identified and highlighted the need to determine how the social environment of online learning influences the social construction of knowledge. This led to the second …

Single-Crystal Elasticity Of Earth’S Mantle Transition Zone Minerals And High Pressure-Temperature Phase Equilibrium Experiments On Martian Basalts, Wenyi Zhou

Earth and Planetary Sciences ETDs

Wadsleyite and ringwoodite are major minerals in the Earth’s Mantle Transition Zone. Global and local seismic studies have detected strong lateral variations in seismic velocity and anisotropy in the Mantle Transition Zone, reflecting temperature and possible composition variations. Interpretation of these seismic observations requires knowledge of thermoelastic properties of wadsleyite and ringwoodite with different compositions (water and Fe contents) under high pressure-temperature conditions. In this dissertation, we have measured single-crystal elastic properties of wadsleyite and ringwoodite under high pressure-temperature conditions by Brillouin spectroscopy. Based on our measurements and previous experimental results, we further model the effects of water and Fe …

Theoretical Studies Of Molecule-Surface Interactions And Dynamics, Yingqi Wang

Chemistry and Chemical Biology ETDs

Gas-surface scattering involves the conversion of energy in different forms in the impinging molecule, possible bond breaking and forming, and the energy transfer across gas-solid interface. Possible energy dissipation channels include adiabatic energy transfer to the motion of surface phonons and non-adiabatic interactions with surface electron-hole pairs. A complete understanding of the interplay of energy dissipation and physical/chemical changes in the molecule is vital for many important applications such as materials fabrication and heterogenous catalysis.

Gas-surface encounters may occur where non-adiabatic effects are negligible. Two such systems were investigated, both with ample experimental data. One is concerned with the scattering …

Investigation Of Laser And Nonlinear Properties Of Anderson Localizing Optical Fibers, Cody Ryan Bassett

Optical Science and Engineering ETDs

In this dissertation, I investigate the possibility of lasing and nonlinear phenomena in completely solid-state transverse Anderson localizing optical fibers (TALOFs). I examine three areas within this range of topics. The research in nonlinear phenomena focuses on four-wave mixing (FWM). FWM is of high interest in TALOFs due to the fact that guided localized modes of the fiber each have different propagation constants, and thus unique possible FWM pairs can be generated from the same input pump beam. I demonstrate the generation of FWM in the TALOF by pumping it with 532 nm light into a localized mode and observing …

Science, Technology, Engineering, And Mathematics (Stem) Project-Based Learning (Pbl) Education: A New Mexico Case Study For Equity And Inclusion, Kimberly A. Scheerer

Teacher Education, Educational Leadership & Policy ETDs

This research addresses how student participation in Science, Technology, Engineering, and Mathematics (STEM) project-based learning (PBL) education activities encourages underrepresented minority student achievement in STEM career field trajectories. Seven New Mexico high school counselors and 12 STEM organization personnel were interviewed during this study. Their responses represent the nuanced professional voices where New Mexico public education intersects with STEM student interest and cultural influence.

For students, STEM PBL can foster deep integration across educational disciplines and enhance STEM career trajectory interest and readiness. STEM education converged with PBL methodologies has the ability to leverage community support while broadening student networks. …

Convexity Of Regularized Optimal Transport Dissimilarity Measures For Signed Signals, Christian P. Fowler

Mathematics & Statistics ETDs

Debiased Sinkhorn divergence (DS divergence) is a distance function of

regularized optimal transport that measures the dissimilarity between two

probability measures of optimal transport. This thesis analyzes the advantages of

using DS divergence when compared to the more computationally expensive

Wasserstein distance as well as the classical Euclidean norm. Specifically, theory

and numerical experiments are used to show that Debiased Sinkhorn divergence

has geometrically desirable properties such as maintained convexity after data

normalization. Data normalization is often needed to calculate Sinkhorn

divergence as well as Wasserstein distance, as these formulas only accept

probability distributions as inputs and do not directly …

Induced Seismicity In The Raton Basin And Global Variability Of The 410-Km Discontinuity, Margaret E. Glasgow

Earth and Planetary Sciences ETDs

Natural processes like mantle convection and plate tectonics dominate Earth’s seismic structure. Recently human activities have increasingly influenced the deformation of the shallow crust. In this dissertation, passive source seismology was used to constrain seismic discontinuities in the mantle transition zone and seismogenic structures in induced earthquake settings. Using a novel sampling method and uniform processing approach, I found the 410-km discontinuity is thermally and compositionally variable. Using a machine- learning approach, I found the three main zones of seismicity in the Raton Basin consist of short faults or fault segments with variable orientations. The zone that hosted a Mw …

Dense Array Seismic Imaging Of Earth's Crust Using Active And Passive Sources, Evans Awere Onyango

Earth and Planetary Sciences ETDs

Imaging Earth’s crust is critical to understanding processes in the near-surface that affect civilization such as the interaction of seismic waves with the near-surface to generate natural or man-made hazards or investigating how the shallow crust affects the distribution of resources. In chapter 1, I processed and analyzed active source seismic data recorded by ~1000 geophones that were acquired over the legacy HADDOCK nuclear test at the Nevada National Security Site. Using seismic reflection and refraction methods, we image the partially collapsed post-detonation structure to better understand the velocity structure in and around the HADDOCK chimney. Results from this work …

Statistical Methods For Differential Gene Expression Analysis Under The Case-Cohort Design, Lidong Wang

Mathematics & Statistics ETDs

Differential gene expression analysis has the potential to discover candidate biomarkers, therapeutic targets, and gene signatures. How to save money when using an unaffordable sample is a practical question. The case-cohort (CCH) study design can blend the economy of case-control studies with the advantages of cohort studies. But it has not been seen in the medical research literature where high-throughput genomic data were involved.

A score test does not need to fit the Cox PH model iteratively; hence, it can save computing time and avoid potential convergence issues. We developed a score test under the CCH design to identify DEGs …

Creating Counter-Hegemonic Spaces In A Spanish Language Arts Classroom, Mercedes Valenzuela

Language, Literacy, and Sociocultural Studies ETDs

This qualitative case study used practitioner research methods to address the question: How does a Mexican American teacher create counter-hegemonic spaces in a Spanish Language Arts classroom utilizing critical race and borderlands theories? The research focused on how I as a teacher-built trust and respect through place—here, the classroom, classroom activities, and discussions—thereby creating a place for students to express their thoughts and feelings and to build relationships with the teacher and their classmates for learning to occur. This study also analyzed how using critical race and borderlands theories influences and shapes Mexican American students’ educational experiences beyond a …

Functional Data Analysis Of Covid-19, Nichole L. Fluke

Mathematics & Statistics ETDs

This thesis deals with Functional Data Analysis (FDA) on COVID data. The Data involves counts for new COVID cases, hospitalized COVID patients, and new COVID deaths. The data used is for all the states and regions in the United States. The data starts in March 1^st, 2020 and goes through March 31^st, 2021. The FDA smooths the data and looks to see if there are similarities or differences between the states and regions in the data. The data also shows which states and regions stand out from the others and which ones are similar. Also shown …

Music Genre Classification By Convolutional Neural Networks, Usame Suud

Mathematics & Statistics ETDs

In today’s world, deep learning models are widely used in a variety of fields. Audio

applications include speech recognition, audio classification, and music information

retrieval. In this paper, we will focus on the classification of music genres using an

artificial neural network. The development of audio machine learning techniques has

created an independence from traditional, more time-consuming signal processing

techniques. Starting with raw audio data, we will gain an understanding of what

audio is and its digital representation. Then, the focus will be on obtaining frequency

information from audio signals through the use of spectrograms. Transforming the

spectrograms into the …

Simulation Of Supercritical Multiphase Flows Using Machine Learning, Nelson P. Longmire

Mechanical Engineering ETDs

In many technologies, such as rocket engines and modern power plants, the pressures of the fluids in these systems have increased to increase efficiency. As a result, the fluids are under pressures higher than the critical pressure meaning the fluids are supercritical. Supercritical fluids are unique as a liquid/gas phase equilibrium no longer exists, and a process called pseudo boiling occurs where the fluid properties have steep gradients, which lead to interesting fluid mechanics and heat transfer characteristics. Our understanding of supercritical fluids has had exciting advances over the years. However, there are still phenomena that are still not well …

A Rapid High-Precision Analytical Method For Triple Oxygen Isotope Analysis Of Co2 Gas Using Tunable Infrared Laser Direct Absorption Spectroscopy, Nathan Perdue, Zachary Sharp, David Nelson Jr., Rick Wehr, Christoph Dyroff

Earth and Planetary Sciences ETDs

Rationale

The simultaneous analysis of the three stable isotopes of oxygen – triple oxygen isotope analysis – has become an important analytical technique in natural sciences. Determination of the abundance of the rare ¹⁷O isotope in CO₂ gas using magnetic sector isotope ratio mass spectrometry is complicated by the isobaric interference of ¹⁷O by ­¹³C (¹³C¹⁶O¹⁶O and ¹²C¹⁶O¹⁷O both have mass 45 amu). A number of analytical techniques have been used to measure the ¹⁷O/¹⁶O ratio of CO₂ gas. They …

Determining The Idealizers Of Principal Monomial Ideals Over A Rational Normal Curve, Perla A. Maldonado Cortez

Mathematics & Statistics ETDs

Given an ideal J generated by an element of the form sm1 tm2 , where
m1 ≥ 2 and m2 ≥ 0, we illustrate how to compute the idealizer I(J) over the ring
of the rational normal curve of degree n and we give a formula for it using the
graded pieces of the sets of differential operators.

Theory Of Hypersoft Sets: Axiomatic Properties, Aggregation Operations, Relations, Functions And Matrices, Muhammad Saeed, Atiqe Ur Rahman, Muhammad Ahsan, Florentin Smarandache

Neutrosophic Sets and Systems

No abstract provided.

Neutrosophic Demate L Approach For Financial Ratio Performance Evaluation Of The Nasdaq Exchange, C. Veeramani, R. Venugopal, S. A. Edalatpanah

Neutrosophic Sets and Systems

No abstract provided.

Rough Semigroups In Connection With Single Valued Neutrosophi C (∈, ∈)- Ideals, Young Bae Jun, Anas Al-Masarwah, Majdoleen Abuqamar

Neutrosophic Sets and Systems

No abstract provided.

Eoq Model With Price, Marketing, Service And Green Dependent Neutrosophic Demand Under Uncertain Resource Constraint: A Geometric Programming Approach, Chaitali Kar, Tapan Kumar Roy, Manoranjan Maiti

Neutrosophic Sets and Systems

No abstract provided.

Separation Axioms In Neutrosophic Supra Topological Space And Neutrosophic Supra Bi-Topological Space, Riad K. Al-Hamido

Neutrosophic Sets and Systems

No abstract provided.

Ranking Of Interval Valued Neutrosophic Numbers By Qualitative And Quantitative Criteria, D. Jeni Seles Martina, G. Deepa

Neutrosophic Sets and Systems

No abstract provided.

Semi-Separation Axioms And Semi-Regularity Axioms In Linguistic Neutrosophic Topological Spaces, N. Gayathri, M. Helen

Neutrosophic Sets and Systems

No abstract provided.

Cauchy Single-Valued Neutrosophic Numbers And Their Applications In Magdm, Faruk Karaaslan, Fatih Karamaz

Neutrosophic Sets and Systems

No abstract provided.

Pentagonal Neutrosophic Transportation Problems With Interval Cost, Ummey Habiba, Abdul Quddoos

Neutrosophic Sets and Systems

No abstract provided.

Neutro-Sigma Algebras And Anti-Sigma Algebras, Memet Şahin

Neutrosophic Sets and Systems

No abstract provided.