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A Case Study of 1:1 Technology Policies in Four Texas High Schools and Their Relationship to Practice

Description: With increasing emphasis on technology in schools, the importance of technology policies is great. This study investigated policies for four 1:1 secondary schools in Texas (schools with a ratio of one computing device per student), particularly with respect to the relationship of those policies to practice. The purpose of the study was to determine the current status of the National Education Technology Standards (NETS) essential conditions as reflected in policy and the relationship of those … more
Date: December 2013
Creator: Bauter, Cynthia
Partner: UNT Libraries
open access

Homologs of Mammalian Lysosomal Lipase in Arabidopsis and Their Roles in Lipid Droplet Dynamics

Description: Lipid droplets (LDs) are organelles with many functions in cells and numerous protein interactors facilitate their biogenesis, maintenance, and turnover. The mammalian lipase responsible for LD turnover during lipophagy, LipA, has two candidate homologs in Arabidopsis: MPL1 and LIP1. One or both of these plant homologs may function in a similar manner to mammalian LipA, providing an LD breakdown pathway. To test this hypothesis, wild type (WT) Arabidopsis plants, MPL1 over-expressing (OE) muta… more
Date: December 2017
Creator: McClinchie, Elizabeth A
Partner: UNT Libraries
open access

Teacher Perceptions of Student Engagement as Related to Technology Implementation in the Classroom

Description: The challenges of at-risk students are not new. Newspaper articles from the 1860s presented information about communities seeking to help students to complete school and find employment to provide a livable wage. Today's solutions focus on legislation intended to affect societal change and provide equitable opportunities for at-risk students. Much research regarding how to improve academic outcomes for at-risk students addresses high school level, identifying those factors that encourage second… more
Date: December 2018
Creator: Mata, Jodi Lane
Partner: UNT Libraries
open access

Baseband Noise Suppression in Ofdm Using Kalman Filter

Description: As the technology is advances the reduced size of hardware gives rise to an additive 1/f baseband noise. This additive 1/f noise is a system noise generated due to miniaturization of hardware and affects the lower frequencies. Though 1/f noise does not show much effect in wide band channels because of its nature to affect only certain frequencies, 1/f noise becomes a prominent in OFDM communication systems where narrow band channels are used. in this thesis, I study the effects of 1/f noise on … more
Date: May 2012
Creator: Rodda, Lasya
Partner: UNT Libraries
open access

The Impact of Causative Genes on Neuropsychological Functioning in Familial Early-Onset Alzheimer's Disease: A Meta-Analysis

Description: Mutations of three genes encoding amyloid precursor protein (APP), presenilin-1 (PSEN1), and presenilin-2 (PSEN2) have been shown to reliably result in familial early-onset Alzheimer's disease (FAD); a rare, but catastrophic, subtype of Alzheimer's disease (AD) marked by symptom emergence before age 65 as well as accelerated cognitive deterioration. The current study represents the first known meta-analysis on the association of APP, PSEN1 or PSEN2 on neurocognitive variables. A total of 278 FA… more
Date: May 2017
Creator: Smotherman, Jesse M.
Partner: UNT Libraries
open access

Lind, James Meyer the Trumpet Concertos of Anthony Plog: a Performer’s Guide

Description: Anthony Plog (b. 1947) has contributed several notable works for brass instruments. He is known for writing extremely technically challenging works that contain angular melodies, fast rhythms and a large degree of chromaticism. Though his music is difficult, it also conveys intense emotions. His music for trumpet, specifically Concerto no. 1 for Trumpet, Brass Ensemble and Percussion and Concerto no. 2 for Trumpet and Orchestra, represents a zenith in his compositional development. This dissert… more
Date: August 2012
Creator: Lind, James Meyer
Partner: UNT Libraries
open access

Impact of a Genetically Engineered Probiotic Therapy and IGF-1 Genomics in the PAHenu2 Mouse Model of PKU

Description: Absence of functional phenylalanine hydroxylase results in phenylketonuria (PKU). Viable treatments remain few, expensive and secondary conditions such as osteopenia occur in most PKU patients. Objective 1: Given the recently described roles of gut microbes to aid host digestion, an orally administered genetically engineered probiotic as the delivery vehicle for enzyme replacement therapy was created. The engineered probiotic, pHENOMMenal, produced phenylalanine ammonia lyase with significant… more
Date: December 2015
Creator: Durrer, Katherine Elaine
Partner: UNT Libraries
open access

Psychosocial Determinants of Diabetic Control and Satisfaction with Diabetes Care

Description: Diabetes mellitus affects 7.8% of the American population. National health statistic data and other research shows that racial/ethnic disparities exist in terms of prevalence and treatment outcomes. The present study investigated the role of patient health beliefs (i.e., locus of control, self-efficacy) and the doctor-patient relationship (e.g., satisfaction and collaboration with health care provider), as relative predictors of diabetic control (i.e., HbA1c levels) and overall satisfaction wit… more
Date: May 2011
Creator: Dzivakwe, Vanessa G.
Partner: UNT Libraries
open access

Phenotypic Analysis of Medicago truncatula NPF1.7 Over-Expressing Plants Grown under Different Nitrate Conditions

Description: Plants have many nitrate transporters; in the model legume Medicago truncatula, MtNPF1.7 is among them. MtNPF1.7 is important for M. truncatula growth and it has been established that MtNPF1.7 is a high affinity nitrate transporter. M. truncatula plants with mutations in MtNPF1.7 gene show defects during plants growth, with striking abnormalities in nodule development and root architecture. Nitrogen fixation is an energy expensive process; when legumes have sufficient bioavailable nitrogen like… more
Date: December 2017
Creator: Cai, Jingya
Partner: UNT Libraries
open access

Polystylistic Features of Schnittke's Cello Sonata (1978)

Description: Polystylism in Alfred Schnittke's music has been considered by scholars as a central aspect of his music. Although there are many published analyses of his choral music, symphonies, concerti and violin sonatas, there is no known published research for Schnittke's first cello sonata. Alfred Schnittke grew up in a culturally diverse environment influenced by many different composers and compositional styles under the restrictions of a communist Russian government. These aspects influenced the dev… more
Date: August 2010
Creator: Kleinmann, Johannes
Partner: UNT Libraries
open access

Molecular and Functional Characterization of Medicago Truncatula Npf17 Gene

Description: Legumes are unique among plants for their ability to fix atmospheric nitrogen with the help of soil bacteria rhizobia. Medicago truncatula is used as a model legume to study different aspects of symbiotic nitrogen fixation. M. truncatula, in association with its symbiotic partner Sinorhizobium meliloti, fix atmospheric nitrogen into ammonia, which the plant uses for amino acid biosynthesis and the bacteria get reduced photosynthate in return. M. truncatula NPF1.7 previously called MtNIP/LATD is… more
Date: December 2013
Creator: Salehin, Mohammad
Partner: UNT Libraries

Defining Components Linked to Bacterial Nutritional Utilization of Cyanide as a Sole Nitrogen Source

Description: One of the challenges in biology is placing a function on the myriad of gene sequences having become available from rapid advances in genome sequencing. One such example is a gene cluster (Nit1C) found in bacteria that is tied to the unusual ability of certain bacteria to grow when supplied cyanide as the sole nitrogen source. The term cyanotrophs has been applied to such bacteria, for which a genetic linkage between cyanotrophy and Nit1C was demonstrated for 10 separate bacteria. In additio… more
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Date: May 2019
Creator: Jones, Lauren Brittany
Partner: UNT Libraries
open access

Processing and Characterization of Polycarbonate Foams with Supercritical Co2 and 5-Phenyl-1H-tetrazole

Description: Since their discovery in the 1930s, polymeric foams have been widely used in the industry for a variety of applications such as acoustical and thermal insulation, filters, absorbents etc. The reason for this ascending trend can be attributed to factors such as cost, ease of processing and a high strength to weight ratio compared to non-foamed polymers. The purpose of this project was to develop an “indestructible” material made of polycarbonate (PC) for industrial applications. Due to the high … more
Date: May 2015
Creator: Cloarec, Thomas
Partner: UNT Libraries
open access

Effect of Acute Alcohol Ingestion on Resistance Exercise Induced mTORC1 Signaling in Human Muscle

Description: The purpose of this project was to further elucidate the effects post-exercise alcohol ingestion. This project had many novel aspects including using a resistance exercise (RE) only exercise design and the inclusion of women. To our knowledge, we are the first to investigate the effect of post-RE alcohol ingestion in women. In the first chapter of this project, information on the prevalence of alcohol use and the importance of skeletal muscle as a dynamic and metabolic tissue was provided. In c… more
Date: August 2015
Creator: Duplanty, Anthony A.
Partner: UNT Libraries
open access

Forward Genetic Characterization of Medicago truncatula Tnt1 Insertion Mutants Defective in Nodule Development and Symbiotic Nitrogen Fixation

Description: Legumes are unique plants because they form special structures “nodules”, via symbiotic relationships with rhizobial bacteria present in the soil. Once rhizobia mature inside nodules, they fix atmospheric nitrogen providing a source of bioavailable nitrogen to the plant. To discover novel genetic components involved in the legume-rhizobia symbiosis by using forward genetic screening, we have isolated Medicago truncatula Tnt1 insertion mutants in the R108 ecotype, which are defective in nodule d… more
Date: May 2015
Creator: Kadel, Khem L.
Partner: UNT Libraries
open access

Influence of Alice 3: Reducing the Hurdles to Success in a Cs1 Programming Course

Description: Learning the syntax, semantics, and concepts behind software engineering can be a challenging task for many individuals. This paper examines the Alice 3 software, a three-dimensional visual environment for teaching programming concepts, to determine if it is an effective tool for improving student achievement, raising self-efficacy, and engaging students. This study compares the similarities and differences between a Fundamentals of Programming course with and without Alice integrated into the … more
Date: May 2013
Creator: Daly, Tebring
Partner: UNT Libraries
open access

Lowell Liebermann's Concerto No. 1 for Piano and Orchestra, Opus 12: An Historical and Analytical Study

Description: Lowell Liebermann, born in New York City in 1961, is one of America's most distinguished living composers. In addition, he often conducts and performs as pianist in his own works. His musical language is unique and unmistakably rooted in the grand tradition of Western music; however, his style combines old and new, simple and complex, emotional and intellectual aspects. It combines tuneful, catchy melodies with a rich harmonic language, all framed by a strong formal design. This study begin… more
Date: May 2010
Creator: Chang, Hsiao-Ling
Partner: UNT Libraries
open access

Diabetes Status of Mexican Americans: Impact of Country of Birth

Description: In order to better tailor treatment to specific populations, factors which contribute to health disparities among different racial/ethnic groups must be examined. Among Mexican American individuals, the high rate of diabetes represents a significant contributor to overall health. The present study focuses on factors affecting diabetes status among Mexican Americans born in either Mexico or the United States using the 2007 – 2008 NHANES data set. Comparisons were made between diabetes status bas… more
Date: December 2014
Creator: Douglas, Megan E.
Partner: UNT Libraries
open access

Expansion of Musical Styles, Function of Texture, and Performing Techniques in Brian Lock's Sonic Archaeologies No. 1: A Performance Guide

Description: British composer Brian Lock merges the composition styles of Alexander Goehr, Henryk Górecki and Witold Lutoslawski in his innovative works for instrumental sounds and electronics. His most recent work for flute, Sonic Archaeologies No.1, was premiered at the University of North Texas by Mary Karen Clardy, flute; Brian Lock, piano/electric keyboard; and Daniel Pardo, laptop/live mixing. The purpose of this dissertation is to provide flutists with artistic and technical guidance in preparing thi… more
Date: May 2016
Creator: Pardo, Daniel (Flutist)
Partner: UNT Libraries
open access

Characterizing Noise and Harmonicity: The Structural Function of Contrasting Sonic Components in Electronic Composition

Description: This dissertation examines the role of noise in shaping the form of several recent musical compositions. This study demonstrates how the contrast of noisy sounds and harmonic sounds can impact the structure of compositions. Depending on context, however, the specific use and function of noise can vary substantially from one work to the next. The first portion of this paper describes methods for quantifying noise content using FFT analysis procedures. A number of tests on instrumental and synthe… more
Date: May 2010
Creator: Dribus, John Alexander
Partner: UNT Libraries
open access

A Performance Guide for Pearls I and Pearls II by Roland Szentpali

Description: This dissertation is a performance guide for the euphonium solos Pearls I and Pearls II, written by Roland Szentpali. This performance guide allows performers to better understand the jazz styles within each movement and provides them with a resource for performing these particular pieces as well as other jazz influenced pieces. This performance guide is specific to euphonium repertoire and written for euphonium performers and educators. This is also a resource for a solo work in the reperto… more
Date: May 2010
Creator: Buckley, Christopher
Partner: UNT Libraries
open access

Application of Statistical Physics in Human Physiology: Heart-Brain Dynamics

Description: This dissertation is devoted to study of complex systems in human physiology particularly heartbeats and brain dynamics. We have studied the dynamics of heartbeats that has been a subject of investigation of two independent groups. The first group emphasized the multifractal nature of the heartbeat dynamics of healthy subjects, whereas the second group had established a close connection between healthy subjects and the occurrence of crucial events. We have analyzed the same set of data and esta… more
Date: August 2018
Creator: Bohara, Gyanendra
Partner: UNT Libraries
open access

The Keyboard Toccatas of Michelangelo Rossi (ca. 1602-1656): Performance Perspectives for Organists

Description: This dissertation provides comprehensive performance perspectives for the interpretation of the published keyboard toccatas by Michelangelo Rossi (ca.1602-1656) in his collection, Toccate e Correnti d'Intavolatura d'Organo e Cimbalo (c. 1634). This document consults the following sources on keyboard practice in the early-Baroque period: Girolamo Diruta's Il Transilvano Dialogo Sopra Il Vero Modo Di Sonar Organi, & Istromenti da penna (1593); Adriano Banchieri's Conclusioni nel Suono dell'Organo… more
Date: December 2019
Creator: Van Rooyen, Hentus
Partner: UNT Libraries
open access

Korean Cultural and Musical Influences in Younghi Pagh-Paan's Man-Nam I

Description: Younghi Pagh-Paan is an internationally renowned contemporary Korean-German composer. While her music has been strongly influenced by German contemporary musical aesthetics, her compositions also possess Korean musical and cultural influences. In her works, Pagh-Paan employs Western instruments and musical languages that incorporate contemporary techniques such as vibratos, flatter tonguing, pitch bends, and legato glissandi. These effects are thought to imitate the sounds created by traditiona… more
Date: August 2016
Creator: Jung, Hyejin
Partner: UNT Libraries
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