Digital Commons Network^™

Measuring And Filtering Microwave Radiations Using Frequency Selective Surface Through Energy Saving Glass, Irfan Ullah

Theses: Doctorates and Masters

This thesis presents the results of our investigation into the measurement and filtering of microwave radiation, and the subsequent development of a microwave reduction solution for modern building architecture utilising Energy Saving Glass (ESG), in conjunction with Frequency Selective (FSS) surfaces through which useful signals can be filtered. In the investigation, radiation power density levels arising from the three common microwave sources (radio base stations, mobile phones, and microwave ovens) were measured, and the results were compared with the standards provided by the Australian Radiation Protection and Nuclear Safety Agency. For the radio base stations, the relationship between radiation intensity …

Principals' Strategies For Improving The Academic Achievement Of Students Of Disadvantaged Rural Junior High Schools In Ghana, Erasmus Kormla Norviewu-Mortty

Theses: Doctorates and Masters

The academic performance of students in public basic schools in rural Ghana during the past two decades has declined significantly (Akyeampong, 2007). Government efforts to remedy this have not yielded any sustainable result (Atta-Quayson, 2007). The Saboba District Junior High Schools are among the lowest-performing rural schools. Generally, inadequate funding and resourcing are blamed for poor academic achievement of disadvantaged, rural students. During eight years of teaching in the Saboba District, the Researcher observed that the academic achievement of students in some schools remained high while that of others in the same locality remained low. Further, the Researcher’s experiences suggested …

The Simulation Of Material Types In A Western Australian Iron Deposit, Jacqueline Ferreira

Theses: Doctorates and Masters

Geostatistical methods are currently used by mining companies to determine a resource model of the tonnage and head grade that may be obtained from a potential orebody, making it one of the first and most vital operational stages in any mining project. Currently long term mine planning is based on the estimated head grades model, which provides vital information on the quality of the ore. The risks associated with mining a particular ore may be reduced if geometallurgical information, such as material types, is incorporated into the operational flow model. Material type proportions are obtained from evaluated reverse circulation (RC) …

Linear-Cavity Tunable Fibre Lasers Employing An Opto-Vlsi Processor And A Mems-Based Device, David Daniel Michel

Theses: Doctorates and Masters

This thesis proposes and demonstrates experimentally two novel linear-cavity tunable fibre lasers employing an erbium-doped fibre (EDF) in conjunction with an Opto- VLSI processor and a MEMS-based device for wavelength selection. The Opto-VLSI processor and the MEMS-based device along with an optical collimator, a Bragg grating plate and an optical lens, enable the realisation of an optical filter for continuous tuning of wavelengths over the amplified spontaneous emission (ASE) range of the EDF. We also propose the use of a section of un-pumped EDF as a saturable absorber (SA), which suppresses noise spikes caused by the high optical pumping power. …

A Comparative Study Of Indigenous People's And Early European Settlers' Usage Of Three Perth Wetlands, Western Australia, 1829-1939, Susan Ujma

Theses: Doctorates and Masters

This study takes as its focus the contrasting manner in which the Nyoongar indigenous people and the early European settlers utilised three wetland environments in southwest Australia over the century between 1829 and 1939. The thesis offers both an ecological and a landscape perspective to changes in the wetlands of Herdsman Lake, Lake Joondalup and Loch McNess. The chain of interconnecting linear lakes provides some of the largest permanent sources of fresh water masses on the Swan Coastal Plain. This thesis acknowledges the importance of the wetland system to the Nyoongar indigenous people.

The aim of this research is to …

The Relationship Between Reading Fluency And Mathematical Word Problem Solving:An Exploratory Study., Amy M. Walker

All-Inclusive List of Electronic Theses and Dissertations

The present study examined the relationship between Oral Reading Fluency(ORF)scores and mathematics problem solving scores.The reading fluency scores were obtained from the Dynamic Indicator of Basic Early Literacy(DIBELS)assessment.The mathematics problem solving scores were obtained from the Indiana State Test of Education Progress Plus(ISTEP+)assessment.In addition,error patterns found in mathematics problem solving on ISTEP+and Acuity Diagnosis Tests were analysed.The purpose of the quantitative study was to determine if DIBELS ORF scores were correlated with mathematics problem solving ISTEP+ scores.A linear regression was conducted to determine the significance of the correlation.The purpose of the qualitative study was to determine error patterns found on …

Mentoring As A Tool For Leadership Development In The Redeemed Christian Church Of God, Nigeria, Oladimeji Babatunde

ATS Dissertations

No abstract provided.

Seasonal Biophysical Variations In Resting And Exercising Elephants: Energetic, Thermoregulatory, And Behavioral Adaptations, Michael Ford Rowe

All-Inclusive List of Electronic Theses and Dissertations

No abstract provided.

Phylogenomics: Molecular Evolution In The Genomics Era, Arun Somwarpet Seetharam

All-Inclusive List of Electronic Theses and Dissertations

Evolutionary studies in recent years have been transformed by the development of new, powerful techniques for investigating many mechanisms and events of molecular evolution. Large collections of many different complete genomes now available in the public domain offer great advantages to genomic scale evolutionary studies. Phylogenomics, a term often used to describe the use of genomic scale data to infer species phylogeny or to predict protein function through evolutionary history, is greatly benefitted by the revolutionary progress in DNA sequencing technology. In the present study we developed and utilized various phylogenomic methods on large genome-scale data. In the first study, …

Assessing Risk Of Violence In Caucasian And African-American Male Forensic Patients, Brandy Lynn Herriott

All-Inclusive List of Electronic Theses and Dissertations

Violence risk assessment, or the ability to predict the likelihood of a criminal offender's to commit a violent act in the future, is an essential role of psychologists in the criminal justice system. One of the most widely used violence risk assessment instruments is the Violence Risk Appraisal Guide (VRAG). The Psychopathy Checklist-Revised (PCL-R) is the most widely used measure of psychopathy and is often used as part of violence risk assessment, including in the the VRAG. The PCL-R is lengthy and time-consuming process, which has led to the development of the Childhood and Adolescent Taxon Scale (CATS), which is …

Review Of Kant And Phenomenology, Sebastian Luft

Philosophy Faculty Research and Publications

No abstract provided.

Von Der Mannigfaltigen Bedeutung Der Reduktion Nach Husserl: Reflexionen Zur Grundbedeutung Des Zentralen Begriffs Der Transzendentalen Phänomenologie, Sebastian Luft

Philosophy Faculty Research and Publications

This paper takes a renewed look at Husserl's method of the phenomenological reduction. It interprets "the reduction" as shorthand for the meaning of Husserl's entire phenomenology in its mature stage. In the same way, the method of reduction might have different manners of execution but they are nevertheless guided by a common intent. The text takes its starting point by considering the different metaphors Husserl uses - the "flatland creatures" and the reduction as akin to a religious conversion - and spells out their implications, which lead me to consider their metaphilosophical significance. In this way, this article attempts a …

Characterization And Modeling Of Pneumatic Multi-Material Micro-Extrusion, Tejas Bendarkar

Theses

Functionally Graded Materials (FGMs) are characterized by a continuous variation in the composition of parent materials through the work piece volume. This gradual change in material composition is aimed at improving mechanical, thermal and/or electrical properties of the material. FGMs are being increasingly used in a variety of applications including aerospace, biomedical and nuclear.

FGMs have been produced using additive manufacturing processes such as laser engineered net shaping (LENS) and 30 printing. A relatively new process category called direct write (OW) printing has evolved over the past decade. OW techniques such as multi-material micro-extrusion are capable of producing FGMs. To …

Cost-Benefit Federalism: Reconciling Collective Action Federalism And Libertarian Federalism In The Obamacare Litigation And Beyond, Abigail Moncrieff

Faculty Scholarship

The lawsuits challenging Obamacare's individual mandate have exposed a rift in federalism theory. On one side of the divide is a view that the national government ought to intervene - and ought to be constitutionally permitted to intervene - whenever the states are "separately incompetent" to regulate. This is the view that Robert Cooter and Neil Siegel recently theorized as "collective action federalism." On the other side of the divide is a view that federalism exists for reasons other than efficiency of regulation and particularly that the Founders created the federal structure for the protection of individual liberty. According to …

Defusing Implicit Bias, Jonathan Feingold, Karen Lorang

Faculty Scholarship

The February 2012 killing of Trayvon Martin has slowly reignited the national conversation about race and violence. Despite the sheer volume of debate arising from this tragedy, insufficient attention has been paid to the potentially deadly mix of guns and implicit bias. Evidence of implicit bias, and its power to alter real-world behavior, is stronger now than ever. A growing body of research on “shooter bias” reveals that, as a result of implicit bias, White and Black Americans are more likely to shoot unarmed Black men than unarmed White men. The problem has been diagnosed. What remains to be determined …

People Of Snowy Mountain, People Of The River: A Multi-Agency Ethnographic Overview And Compendium Relating To Tribes Associated With Clark County, Nevada, Douglas Deur, Deborah Confer

Anthropology Faculty Publications and Presentations

The current document has been undertaken to assist agencies in meeting their obligations for federally mandated compliance and consultation with Indian tribes that have historical associations with Clark County. The document has been designed in part to provide an overview of the territorial associations of various tribes with ties to this area. This is accomplished using ethnohistorical documentation as well key legal documents, such as treaty language and Indian Claims Commission findings, that establish parameters for agency consultation responsibilities. Managers of Clark County’s federal lands have been eager to identify those tribes that are tied to the area in various …

Resonance And Double Negative Behavior In Metamaterials, Yue Chen

LSU Doctoral Dissertations

In this work, a generic class of metamaterials is introduced and is shown to exhibit frequency dependent double negative effective properties. We develop a rigorous method for calculating the frequency intervals where either double negative or double positive effective properties appear and show how these intervals imply the existence of propagating Bloch waves inside sub-wavelength structures. The branches of the dispersion relation associated with Bloch modes are shown to be explicitly determined by the Dirichlet spectrum of the high dielectric phase and the generalized electrostatic spectra of the complement. For numerical purposes, we consider a metamaterial constructed from a sub-wavelength …

Study Of The Decay B0s→ J.Lψf̕2 (1525) In Μ+Μ-K+K- Final States, David Hedin

Faculty Articles, Papers, and Other Scholarship

We investigate the decay B0s→JΨK+K- for invariant masses of the K+K- for invariant masses of the K+K- pair in the range 1.35

Solving Linear Equations: A Comparison Of Concrete And Virtual Manipulatives In Middle School Mathematics, Robin L. Magruder

Theses and Dissertations--Curriculum and Instruction

The purpose of this embedded quasi-experimental mixed methods research was to use solving simple linear equations as the lens for looking at the effectiveness of concrete and virtual manipulatives as compared to a control group using learning methods without manipulatives. Further, the researcher wanted to investigate unique benefits and drawbacks associated with each manipulative.

Qualitative research methods such as observation, teacher interviews, and student focus group interviews were employed. Quantitative data analysis techniques were used to analyze pretest and posttest data of middle school students (n=76). ANCOVA, analysis of covariance, uncovered statistically significant differences in favor of the …

Student And Instructor Perceptions Of Factors Important For Student Success In Online And In-Person Algebra Classes At Somerset Community College, Richard S. Matika

Theses and Dissertations--Educational Policy Studies and Evaluation

Online mathematics courses at Somerset Community College (SCC) have traditionally had a lower retention rate than their in-person counterparts. This study looked at online and in-person students at SCC in the courses Intermediate Algebra and College Algebra. Beginning of semester student demographics were considered to determine whether or not the online and in-person student populations were comparable. End of semester student demographics, retention rates, and grades on the final exams were examined to determine whether or not there were patterns among completer students. Finally, a survey was administered to students and instructors to determine their perceptions of several factors …

A Descriptive, Survey Research Study Of The Student Characteristics Influencing The Four Theoretical Sources Of Mathematical Self-Efficacy Of College Freshmen, Tonja Motley Locklear

Theses and Dissertations--Science, Technology, Engineering, and Mathematics (STEM) Education

The Sources of Middle School Mathematics Self-Efficacy Scale (Usher & Pajares, 2009) was adapted for use in this study investigating the impact that gender, race, sexual orientation, hometown location (rural, suburban, or urban), high school GPA, college GPA and letter grade of a mathematics course in the previous semester had on the four sources of mathematical self-efficacy of 102 college freshmen attending three small, private, liberal arts institutions. Even though this study found no interaction effects between the student characteristics, the four sources of mathematical self-efficacy, or the three subcategories of the vicarious experience construct, this study did find statistically …

Measuring Job Satisfaction Among Kentucky Head Principals Using The Rasch Rating Scale Model, Xavier J. Webb

Theses and Dissertations--Educational Leadership Studies

The continued expansion of principals' responsibilities is having a detrimental effect on their job satisfaction; therefore, it is increasingly challenging to retain these important leaders. Effective principals can impact student learning and other vital outcomes; thus, it is important to be able to retain effective school leaders. Examining the perceived sources of principals’ satisfaction and dissatisfaction with their work has strong implications for policies and practices that can be implemented to increase principal retention.

The purpose of this study was to measure the job satisfaction of head principals in Kentucky. The research conducted was an exploratory study using survey research …

The Clinical Usefulness Of Vector Coding Variability In Female Runners With And Without Patellofemoral Pain, Tommy Joseph Cunningham

Theses and Dissertations--Kinesiology and Health Promotion

It has been suggested that Patellofemoral Pain (PFP) may be the result of a coordinate state which exhibits less joint coordination variability. The ability to relate joint coordination variability to PFP pathology could have many clinical uses; however, evidence to support clinical application is lacking. Vector coding’s coupling angle variability (CAV) has been introduced as a possible analysis method to quantify joint coordination variability. The purpose of this study was to assess the clinical usefulness of CAV measures from a dynamical systems perspective. This involved establishing the precision limits of CAV measures when physiological conditions are held constant, altering control …

Direct Manipulation Tablet Apps For Education: How Should We Understand Them?, Rich Burkhard, Timothy Hill, Shailaja Venkatsubramanyan, Chang Kim

Faculty Research, Scholarly, and Creative Activity

As the iPad and its competitors create a new product category – apps for mobile, multimedia tablets with touch and gesture interfaces – many are convinced that tablet apps will revolutionize education. For example, hand-controlled, direct manipulation features offer new ways to convey both spatial and abstract concepts, and progressive storylines can adapt to users in real-time. While the effectiveness of tablet apps for learning may seem obvious to new users, how and why particular apps might be effective is new research territory, and the relevance of existing learning theory is unknown. We describe a research program that will explore …

Comprehensive Planning And Resilience: A Study Of Louisiana Parishes After Hurricane Katrina, Mary Paille

LSU Master's Theses

When hurricanes Katrina and Rita hit in 2005, widespread devastation was felt in over half of the parishes in the state. More than 200,000 homes were damaged and more than 1500 people lost their lives. During this transitionary period, communities were vulnerable and looked for rebuilding leadership. As part of a post-catastrophe resilience movement, the Louisiana Recovery Authority formulated a 50-year regional plan for recovering south Louisiana called Louisiana Speaks. This planning process opened up an opportunity to reach those communities that otherwise may not have considered planning or how it could help them prepare for future events. This places …

The Distribution And Diversity Of Functional Gene Pathways Controlling Sulfur Speciation In Lower Kane Cave, Wyoming, Audrey Tarlton Paterson

LSU Master's Theses

Defining the linkages between microbial metabolic activity and environmental geochemistry can be used to understand how carbonate dissolution in sulfidic karst systems proceeds. In Lower Kane Cave, Wyoming, sulfidic springs support taxonomically distinct microbial communities that are also associated with putative sulfur metabolisms (e.g., oxidation of reduced sulfur compounds, sulfate reduction, and sulfur disproportionation) that influence carbonate dissolution. The distribution of diverse microbial groups in other terrestrial subsurface environments is not well understood, making Lower Kane Cave ideal for study. Molecular genetics techniques were used to uncover diversity of 16S rRNA genes and bacterial soxB and aprA functional genes. Aqueous …

Interventions In The Middle School Mathematics Classroom: Raising Standardized Test Scores By Diminishing Stereotype Threat, Elizabeth Stockwell Kirkindoll

LSU Master's Theses

Stereotype threat is a situational concern in which persons have uneasiness or worries about confirming a negative presumption about their social group. This apprehension affects the performance of those suffering this threat in recursive cycles, causing continuing underperformance in the threatened domain. This document reviews the research on stereotype threat, its causes, characteristics and effects, and describes how stereotype threat affects learning and undermines academic performance. Attention is focused on the role that stereotype threat plays in the underachievement of females in mathematics. A report on an experiment that attempted to reduce math-related stereotype threat among middle school females is …

Advanced Nanohybrid Materials: Surface Modification And Applications, Li-Hung Liu, Rémi Métivier, Shanfeng Wang, Hui Wang

Chemistry Faculty Publications and Presentations

The field of functional nanoscale hybrid materials is one of the most promising and rapidly emerging research areas in materials chemistry. Nanoscale hybrid materials can be broadly defined as synthetic materials with organic and inorganic components that are linked together by noncovalent bonds (Class I, linked by hydrogen bond, electrostatic force, or van der Waals force) or covalent bonds (Class II) at nanometer scale. The unlimited possible combinations of the distinct properties of inorganic, organic, or even bioactive components in a single material, either in molecular or nanoscale dimensions, have attracted considerable attention. This approach provides an opportunity to create …

Spatial Variation Analysis Of Salinity To Determine Fluid Flow Pathways And Reservoir Compartmentalization In A Deepwater Gulf Of Mexico Field, William Jacob Daugherty

LSU Master's Theses

Variations in salinity have been documented in previous studies onshore Louisiana in the Wilcox group (Funayama and Hanor 1995) as well as offshore Louisiana on the continental shelf (Bruno and Hanor 2003 and Steen et al. 2011). These studies were conducted using various methods to estimate pore water salinity and make inferences about possible fluid flow pathways and compartmentalization of reservoirs in order to better understand the complex hydrogeology of the Gulf of Mexico. Similar variations in salinity were documented in this study located in a deepwater salt withdrawal minibasin located on the upper slope of the Gulf of Mexico. …

Operational Methods For Evolution Equations, Lee Gregory Windsperger

LSU Doctoral Dissertations

This dissertation refines and further develops numerical methods for the inversion of the classical Laplace transform and explores the effectiveness of these methods when applied (a) to an asymptotic generalization of the Laplace transform for generalized functions and (b) to the numerical approximation of solutions of ill-posed evolution equations (e.g. backwards in time problems).

Chapter 1 of the dissertation reviews some of the key features of asymptotic Laplace transform theory and its application to evolution equations. Although some of the statements and results contain slight modifications and improvements, the material presented in Chapter 1 is known …