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Louisiana Tech University

2019

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Articles 1 - 23 of 23

Full-Text Articles in Physical Sciences and Mathematics

There And Back Again: A Chemist Tale & The Lord Of The Ring Stands, Benjamin Blass Oct 2019

There And Back Again: A Chemist Tale & The Lord Of The Ring Stands, Benjamin Blass

Science Seminars

Students at universities and colleges are focused on achieving their degrees, but often wonder where their careers will take them once they leave the confines of the academic world. While some people’s careers are straight lines through to retirement, others are wandering paths that lead to unexpected outcomes and opportunities. In an effort to provide some insight into life after school. This lecture describes Dr. Blass’s career journey over his 25+ year career and highlights some of the lessons he learned along the way.


Adaptive Feature Engineering Modeling For Ultrasound Image Classification For Decision Support, Hatwib Mugasa Oct 2019

Adaptive Feature Engineering Modeling For Ultrasound Image Classification For Decision Support, Hatwib Mugasa

Doctoral Dissertations

Ultrasonography is considered a relatively safe option for the diagnosis of benign and malignant cancer lesions due to the low-energy sound waves used. However, the visual interpretation of the ultrasound images is time-consuming and usually has high false alerts due to speckle noise. Improved methods of collection image-based data have been proposed to reduce noise in the images; however, this has proved not to solve the problem due to the complex nature of images and the exponential growth of biomedical datasets. Secondly, the target class in real-world biomedical datasets, that is the focus of interest of a biopsy, is usually …


Feature Space Modeling For Accurate And Efficient Learning From Non-Stationary Data, Ayesha Akter Oct 2019

Feature Space Modeling For Accurate And Efficient Learning From Non-Stationary Data, Ayesha Akter

Doctoral Dissertations

A non-stationary dataset is one whose statistical properties such as the mean, variance, correlation, probability distribution, etc. change over a specific interval of time. On the contrary, a stationary dataset is one whose statistical properties remain constant over time. Apart from the volatile statistical properties, non-stationary data poses other challenges such as time and memory management due to the limitation of computational resources mostly caused by the recent advancements in data collection technologies which generate a variety of data at an alarming pace and volume. Additionally, when the collected data is complex, managing data complexity, emerging from its dimensionality and …


A Multicarrier Technique For Monte Carlo Simulation Of Electrothermal Transport In Nanoelectronics, Tyler J. Spence Oct 2019

A Multicarrier Technique For Monte Carlo Simulation Of Electrothermal Transport In Nanoelectronics, Tyler J. Spence

Doctoral Dissertations

The field of microelectronics plays an important role in many areas of engineering and science, being ubiquitous in aerospace, industrial manufacturing, biotechnology, and many other fields. Today, many micro- and nanoscale electronic devices are integrated into one package. e capacity to simulate new devices accurately is critical to the engineering design process, as device engineers use simulations to predict performance characteristics and identify potential issues before fabrication. A problem of particular interest is the simulation of devices which exhibit exotic behaviors due to non-equilibrium thermodynamics and thermal effects such as self-heating. Frequently, it is desirable to predict the level of …


Monte Carlo Simulations Of Electrothermal Transport In Nanoelectronics, T. J. Spence Sep 2019

Monte Carlo Simulations Of Electrothermal Transport In Nanoelectronics, T. J. Spence

Science Seminars

The field of microelectronics plays an important role in many areas of engineering and science, being ubiquitous in aerospace, industrial manufacturing, biotechnology, and many other fields. The capacity to simulate new devices accurately is critical to the engineering design process, as device engineers use simulations to predict performance characteristics and identify potential issues before fabrication. In this talk, a Monte Carlo technique is presented for solving the classical Boltzmann Transport Equation, Poisson’s and Schrödinger’s equations for electrons and phonons.


Increasing The Functionality Of Additive Manufacturing Through Atmospheric Microplasma And Nanotechnology, Alexander Jon Ulrich Aug 2019

Increasing The Functionality Of Additive Manufacturing Through Atmospheric Microplasma And Nanotechnology, Alexander Jon Ulrich

Doctoral Dissertations

Additive Manufacturing (AM) has been changing the manufacturing landscape for the last 20 years. As the interest and demand for both polymer and metal-based 3D printing has grown, the materials and machines used have increased in capabilities. Despite the growth and advancement, there are still a large number of improvements that can be made to add functionality to 3D printers. Metal AM, a subcategory of 3D printing, has garnered much attention among industrial applications with large companies such as General Electric trying to implement the technology to increase innovative designs for motors. Some of the limitations on AM have to …


Organically Modified Inorganic Nanoparticles For Halochromic Ionophores And Nucleic Acids, William Johnston Aug 2019

Organically Modified Inorganic Nanoparticles For Halochromic Ionophores And Nucleic Acids, William Johnston

Doctoral Dissertations

In this dissertation, four nanoparticle reaction schemes were developed as substrates for halochromic dyes or nucleic acids. The reaction schemes include the use of two substrates: silica nanoparticles and halloysite nanotubes. The protocols can incorporate silica (SiO2) nanoparticles and halloysite aluminosilicate (AlO2SiO2) nanotubes due to the presence of silane groups on the surface of either substrate. The reaction schemes are presented along with detailed protocols which were written to facilitate both reproducibility and to serve as an aid to further study and for easy modification of the protocol to suit a researcher's needs. The data is discussed in the materials …


Folding Mathematics: A Mathematical Approach To Origami, Zachary Davis Apr 2019

Folding Mathematics: A Mathematical Approach To Origami, Zachary Davis

Mathematics Senior Capstone Papers

From constructing a midpoint on a line to observing specific divisions of a plane, the art form of Origami borrows many mathematical tools in order to create complex, and often symmetrical, patterns in a paper medium known as a fold. For this project, the traditional fold known as the Origami Crane/Swan will be thoroughly examined as it contains the unique property to lie completely flat when complete. This phenomenon occurs because the vertices holding the fold together are not all considered to be flat folds. The different types of vertices interacting with each other create a natural locking mechanism within …


Pisano Periods: A Comparison Study, Katherine Willrich Apr 2019

Pisano Periods: A Comparison Study, Katherine Willrich

Mathematics Senior Capstone Papers

The Pisano period, denoted π(n), is the period during which the Fibonacci sequence repeats after reducing the original sequence modulo n. More generally, one can similarly define Pisano periods for any linear recurrence sequence; in this paper we compare the Pisano periods of certain linear recurrence sequences with the Pisano periods of the Fibonacci sequence. We first construct recurrence sequences, defining the initial values as integers from 2 to 1000 and second values as 1. This paper discusses how the constructed sequences are related to the matrix M = [(first row) 1 1 (second row) 1 0] reduced modulo n. …


The Housing Bubble, Shelby Brown Apr 2019

The Housing Bubble, Shelby Brown

Mathematics Senior Capstone Papers

The housing market is constantly changing. Fluctuating housing prices and a flooded market have home buyers hesitant to commit and sellers on edge. What if the prospective buyer or seller could take this financial step already knowing the state of the market? The purpose of this project is to attempt to predict the next housing bubble. A multivariable regression analysis is conducted using relevant data including variables such as average property prices, number of foreclosures, etc. in the United States beginning in the year 2009. The trends, patterns, and models created from the regression analysis are compared against data models …


Mathematical Analysis Of The Duck Migration To Louisiana, Brandon Garcia Apr 2019

Mathematical Analysis Of The Duck Migration To Louisiana, Brandon Garcia

Mathematics Senior Capstone Papers

The purpose of this project is to research the relationship between duck migration and weather patterns, more specifically trying to determine if the rainfall and temperature in a given year affects the migration patterns of ducks. Duck hunters and conservation- ists alike have observed an overall decrease in the duck population in Louisiana over the past 70 years. Though some years have seen an increase, the population has not recovered to the level from the 1950s. These observations have led to many questions about what have happened to the ducks or where have the ducks gone. Using differ- ent forms …


The Riemann Curvature Tensor, Jennifer Cox Apr 2019

The Riemann Curvature Tensor, Jennifer Cox

Mathematics Senior Capstone Papers

A tensor is a mathematical object that has applications in areas including physics, psychology, and artificial intelligence. The Riemann curvature tensor is a tool used to describe the curvature of n-dimensional spaces such as Riemannian manifolds in the field of differential geometry. The Riemann tensor plays an important role in the theories of general relativity and gravity as well as the curvature of spacetime. This paper will provide an overview of tensors and tensor operations. In particular, properties of the Riemann tensor will be examined. Calculations of the Riemann tensor for several two and three dimensional surfaces such as that …


Personality & How Sound Affects Moods, Joe Pham Apr 2019

Personality & How Sound Affects Moods, Joe Pham

Mathematics Senior Capstone Papers

This research seeks to determine the personality and relationship between current moods of individuals at Louisiana Tech University by conducting a sound test of a can opening with a pre and post mood assessment, Brief Mood Introspection Scale (BMIS). The real question is “Can a sound test change mood?” Using one-way analysis of variance (ANOVA), the study is intended to examine the relationship between the pre and post (BMIS). The results indicate that there is a statistically significant relationship between both BMIS assessments. To determine if the data is significant, we must show the analysis of both BMIS and its …


Predicting Win Rates In Competitive Overwatchtm, Andrea Sibley Apr 2019

Predicting Win Rates In Competitive Overwatchtm, Andrea Sibley

Mathematics Senior Capstone Papers

OverwatchTM is a video game published by Blizzard Entertainment R where two teams comprised of six people each compete against one another to accomplish a specific goal. The goal of each game is dependent on which map is being played. The maps are divided into four categories: Assault, Escort, Control, and Hybrid. A data set comprised of 3000 games of competitive OverwatchTM is used to determine how likely a team is to win their match. The factors used to determine the likelihood of winning are the map type and the skill ranking for each team. The data set is pre-processed …


Semiclassically Modeling Hydrogen At Rydberg States Immersed In Electromagnetic Fields, Jaron Williams Apr 2019

Semiclassically Modeling Hydrogen At Rydberg States Immersed In Electromagnetic Fields, Jaron Williams

Mathematics Senior Capstone Papers

Originally, closed-orbit theory was developed in order to analyze oscillations in the near ionization threshold (Rydberg) densities of states for atoms in strong external electric and magnetic fields. Oscillations in the density of states were ascribed to classical orbits that began and ended near the atom. In essence, observed outgoing waves following the classical path return and interfere with original outgoing waves, giving rise to oscillations. Elastic scattering from one closed orbit to another gives additional oscillations in the cross-section. This study examines how quantum theory can be properly used in combination with classical orbit theory in order to study …


Making The Cut: Receivers Of The National Football League, Anthony Kent Davis Apr 2019

Making The Cut: Receivers Of The National Football League, Anthony Kent Davis

Mathematics Senior Capstone Papers

In this paper the prospects of the National Football League, or NFL, are studied in order to determine the relationships between past college statistics, other “measurables,” and how they translate to successful careers in the league. When referring to measurables, this consists of all of the numerical data from each player that should, in theory, help teams get an idea of the players strengths or weaknesses. The data being used comes from an annual scouting combine for NFL teams that is held prior to each season. Information about the player’s college statistics and pre-draft measurables are being compared to several …


Blackjack: The Math Behind The Cards, Hanna Blanchard Apr 2019

Blackjack: The Math Behind The Cards, Hanna Blanchard

Mathematics Senior Capstone Papers

In this paper the reader will learn about the math behind the cards in the game of Blackjack. Blackjack or “21” has been played around the world with various rules and regulations in both professional and informal environments. The ultimate objective of the game is to receive a total card value of 21, or as close to 21 as possible without exceeding it, from the cards in a player’s hand in order to beat the dealer’s total. The goal of this project is to calculate the probabilities of various hands to determine the best strategies to win 21. The probabilities …


The Mathematical Modeling Of Ballet, Kendall Gibson Apr 2019

The Mathematical Modeling Of Ballet, Kendall Gibson

Mathematics Senior Capstone Papers

This project aims to analyze the connections between ballet and mathematics. Specifically, this project focuses on analyzing the three-dimensional surfaces created as a dancer performs ballet choreography. The primary goal is to use a Vicon motion capture system in conjunction with MATLAB to model the three-dimensional lines and surfaces created by a dancer’s legs as she performs specific ballet movements. The movements used for this experiment were a pique turn and a rond de jambe. The data was collected using sensors to create objects in Vicon to record the position of the ankle, knee, and hip of the working leg …


Albert Abraham Michelson, "Velocity Of Light"., University Archives And Special Collections, Prescott Memorial Library, Louisiana Tech University Jan 2019

Albert Abraham Michelson, "Velocity Of Light"., University Archives And Special Collections, Prescott Memorial Library, Louisiana Tech University

Manuscript Finding Aids

Facsimile of Michelson's handwritten paper "Experimental Determination of the Velocity of Light", his seminal work in Physics in 1878.


H.B. Bozeman Collection, University Archives And Special Collections, Prescott Memorial Library, Louisiana Tech University Jan 2019

H.B. Bozeman Collection, University Archives And Special Collections, Prescott Memorial Library, Louisiana Tech University

Manuscript Finding Aids

Specimen of petrified palm wood found by Estes B. Bozeman in 1962-63 on the southeast flank of the Sikes Salt Dome, Winn Parish, Louisiana. Palm trees grew in the Winn Parish area 30-40 million years ago during the Tertiary Period of the Cenozoic Era.


Louisiana Tech University Department Of Physics Astronomical Observatory Collection, University Archives And Special Collections, Prescott Memorial Library, Louisiana Tech University Jan 2019

Louisiana Tech University Department Of Physics Astronomical Observatory Collection, University Archives And Special Collections, Prescott Memorial Library, Louisiana Tech University

Manuscript Finding Aids

Correspondence relating to establishing an astronomical observatory at Louisiana Tech University, 1963-1970, and undated constitution of the Louisiana Tech Astronomical Society.


A-139 Louisiana Tech University, Office Of Special Programs, Football Photographs, N.D., University Archives And Special Collections, Prescott Memorial Library, Louisiana Tech University Jan 2019

A-139 Louisiana Tech University, Office Of Special Programs, Football Photographs, N.D., University Archives And Special Collections, Prescott Memorial Library, Louisiana Tech University

University Archives Finding Aids

No abstract provided.


A-165 Louisiana Tech University, Wayne Alexander And Juanita Windes Spinks Collection, 2000, University Archives And Special Collections, Prescott Memorial Library, Louisiana Tech University Jan 2019

A-165 Louisiana Tech University, Wayne Alexander And Juanita Windes Spinks Collection, 2000, University Archives And Special Collections, Prescott Memorial Library, Louisiana Tech University

University Archives Finding Aids

No abstract provided.