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Soft Landing Ion Mobility Mass Spectrometry: History, Instrumentation and an Ambient Pressure Application

Description: Preparative mass spectrometry is an important method for the synthesis of new materials. Recently, soft landing mass spectrometry has been used to land ions on surfaces to coat or otherwise alter them. Commercial soft landing instruments do not yet exist, and the physical phenomenon of soft landing has not yet been fully described. For future ion mobility soft landing research, the theory of ion mobility, ion optics and soft landing is discussed, and 2 soft landing instruments have been built a… more
Date: December 2010
Creator: Birdwell, David
Item Type: Refine your search to only Thesis or Dissertation
open access

Software and Hardware-In-The-Loop Modeling of an Audio Watermarking Algorithm

Description: Due to the accelerated growth in digital music distribution, it becomes easy to modify, intercept, and distribute material illegally. To overcome the urgent need for copyright protection against piracy, several audio watermarking schemes have been proposed and implemented. These digital audio watermarking schemes have the purpose of embedding inaudible information within the host file to cover copyright and authentication issues. This thesis proposes an audio watermarking model using MATLAB® an… more
Date: December 2010
Creator: Zarate Orozco, Ismael
Item Type: Refine your search to only Thesis or Dissertation
open access

Source-bonding as a Variable in Electroacoustic Composition: Faktura and Acoustics in Understatements

Description: Understatements for two-channel fixed media is a four-movement study of the sonic potential of acoustic instruments within the practice of electroacoustic studio composition. The musical identity of the entire composition is achieved through consistent approaches to disparate instrumental materials and a focused investigation of the relationships between the various acoustic timbres and their electroacoustic treatments. The analytical section of this paper builds on contemporary research in ele… more
Date: December 2010
Creator: Rostovtsev, Ilya Y.
Item Type: Refine your search to only Thesis or Dissertation
open access

Spatial Analysis of North Central Texas Traffic Fatalities 2001-2006

Description: A traditional two dimensional (planar) statistical analysis was used to identify the clustering types of North Central Texas traffic fatalities occurring in 2001-2006. Over 3,700 crash locations clustered in ways that were unlike other researched regions. A two dimensional (x and y coordinates) space was manipulated to mimic a one dimensional network to identify the tightest clustering of fatalities in the nearly 400,000 crashes reported from state agencies from 2003-2006. The roadway design wa… more
Date: December 2010
Creator: Rafferty, Paula S.
Item Type: Refine your search to only Thesis or Dissertation
open access

Standing Up to Experts: The Politics of Public Education

Description: In a small room in Austin, Texas, a group of 15 people are single-handedly deciding what is taught to the next generation of American children. The highly politicized 15 member Texas Board of Education is currently going through the once-in-a-decade process of rewriting the teaching and textbook standards for its nearly 5 million schoolchildren. Texas is also unbelievably influential on the standards that textbook publishers use as a basis for their textbooks nationwide. Over the last 10 yea… more
Date: December 2010
Creator: Thurman, Scott
Item Type: Refine your search to only Thesis or Dissertation
open access

A Study of African American Students' Completion of an Accounting Degree at a Private University

Description: The purpose of this qualitative study was to identify factors that may have influenced the choice of major and the persistence to graduation of six African American accounting majors who attended and graduated from a private, predominantly white university from the academic years 2003 through 2009. A set of indicators based on several retention studies was selected for the purpose of identifying pre-college, off-campus, and on-campus factors that influenced students' choice of major and persist… more
Date: December 2010
Creator: Eddington, Alicia F.
Item Type: Refine your search to only Thesis or Dissertation
open access

Surface Chemical Deposition of Advanced Electronic Materials

Description: The focus of this work was to examine the direct plating of Cu on Ru diffusion barriers for use in interconnect technology and the substrate mediated growth of graphene on boron nitride for use in advanced electronic applications. The electrodeposition of Cu on Ru(0001) and polycrystalline substrates (with and without pretreatment in an iodine containing solution) has been studied by cyclic voltammetry (CV), current-time transient measurements (CTT), in situ electrochemical atomic force microsc… more
Date: December 2010
Creator: Bjelkevig, Cameron
Item Type: Refine your search to only Thesis or Dissertation
open access

Syntheses, X-ray Diffraction Structures, and Kinetics on New Formamidinate-Substituted Triosmium Clusters

Description: The reaction between the formamidine ligand PriN=CHNHPri and the activated cluster Os3(CO)10(MeCN)2 has been studied. A rapid reaction is observed at room temperature, yielding the hydride clusters HOs3(CO)9[μ-OCNPriC(H)NPri] and HOs3(CO)10[μ-NPriC(H)NPri] as the principal products. The spectroscopic data and X-ray diffraction structures of those formamidinate-substituted clusters will be present. The thermal reactivity of the clusters has been investigated, with the face-capped clust… more
Date: December 2010
Creator: Yang, Li
Item Type: Refine your search to only Thesis or Dissertation
open access

Synthetic, Mechanistic, and Structural Studies of Polynuclear Metal Clusters and Hydrazido-Substituted Tantalum(V) Compounds

Description: A combined experimental and computational study on the reversible ortho-metalation exhibited by the triosmium cluster Os3(CO)10(dppm) (dppm = 1,1-bis(diphenylphosphino)methane is reported. The conversion of nonacarbonyl cluster HOs3(CO)9[-PhP(C6H4)CH2PPh2] to Os3(CO)10(dppm) is independent of added CO and exhibits a significant inverse equilibrium isotope effect (EIE). Reductive coupling of the C-H bond in HOs3(CO)9[-PhP(C6H4)CH2PPh2] leads to the formation of agostic C-H and tw… more
Date: December 2010
Creator: Huang, Shih-Huang
Item Type: Refine your search to only Thesis or Dissertation
open access

Thermal Identification of Clandestine Burials: A Signature Analysis and Image Classification Approach

Description: Clandestine burials, the interred human remains of forensic interest, are generally small features located in isolated environments. Typical ground searches can be both time-consuming and dangerous. Thermal remote sensing has been recognized for some time as a possible search strategy for such burials that are in relatively open areas; however, there is a paucity of published research with respect to this application. This project involved image manipulation, the analyses of signatures for "gra… more
Date: December 2010
Creator: Servello, John A.
Item Type: Refine your search to only Thesis or Dissertation
open access

User Acceptance of North Central Texas Fusion Center System by Law Enforcement Officers

Description: The September 11 terrorist attacks pointed out the lack of information sharing between law enforcement agencies as a potential threat to sound law enforcement in the United States. Therefore, many law enforcement agencies as well as the federal government have been initiating information sharing systems among law enforcement agencies to eradicate the information sharing problem. One of the systems established by Homeland Security is the North Central Texas Fusion Center (NCTFC). This study eval… more
Date: December 2010
Creator: Odabasi, Mehmet
Item Type: Refine your search to only Thesis or Dissertation
open access

The Variable use of ne in Negative Structures: An Apparent-Time Variationist Study of Synchronous Electronic French Discourse

Description: This study of the variable use of ne in synchronous electronic French discourse follows the methodological guidelines and the theoretical framework proposed and subsequently elaborated by Labov for analyzing variable features of language. This thesis provides a quantitative variable rule (i.e., VARBRUL) analysis including age as a factor group (i.e., independent variable), thereby making a new contribution to this area of inquiry. The data (50,000 words from the vingtaine 'twentysomething' chan… more
Date: December 2010
Creator: Gould, Rebecca J.
Item Type: Refine your search to only Thesis or Dissertation
open access

White Creole Women in the British West Indies: From Stereotype to Caricature

Description: Many researchers of gender studies and colonial history ignore the lives of European women in the British West Indies. The scarcity of written information combined with preconceived notions about the character of the women inhabiting the islands make this the "final frontier" in colonial studies on women. Over the long eighteenth century, travel literature by men reduced creole white women to a stereotype that endured in literature and visual representations. The writings of female authors, who… more
Date: December 2010
Creator: Northrop, Chloe Aubra
Item Type: Refine your search to only Thesis or Dissertation
open access

Adlerian Play Therapy: Effectiveness on Disruptive Behaviors of Early Elementary-Aged Children

Description: Approximately 20% of children experience serious mental health problems severe enough to meet diagnosis criteria, and less than one third of these children receive the services they need. Identifying effective school-based counseling interventions provides a viable and accessible solution, especially for families with financial barriers. This randomized, controlled outcome study examined the effectiveness of Adlerian play therapy (AdPT) compared to reading mentoring (RM) with 58 kindergarten t… more
Date: August 2010
Creator: Meany-Walen, Kristin K.
Item Type: Refine your search to only Thesis or Dissertation
open access

Aesthetic and Technical Analysis on Soar!

Description: Soar! is a musical composition written for wind ensemble and computer music. The total duration of the work is approximately 10 minutes. Flocking behavior of migratory birds serves as the most prominent influence on the imagery and local structure of the composition. The cyclical nature of the birds' journey inspires palindromic designs in the temporal domain. Aesthetically, Soar! portrays the fluid shapes of the flocks with numerous grains in the sounds. This effect is achieved by giving indiv… more
Date: August 2010
Creator: Wang, Hsiao-Lan
Item Type: Refine your search to only Thesis or Dissertation
open access

Affordances of Instrumentation in General Chemistry Laboratories

Description: The purpose of this study is to find out what students in the first chemistry course at the undergraduate level (general chemistry for science majors) know about the affordances of instrumentation used in the general chemistry laboratory and how their knowledge develops over time. Overall, students see the PASCO™ system as a useful and accurate measuring tool for general chemistry labs. They see the probeware as easy to use, portable, and able to interact with computers. Students find that the … more
Date: August 2010
Creator: Sherman, Kristin Mary Daniels
Item Type: Refine your search to only Thesis or Dissertation
open access

Algebraically Determined Rings of Functions

Description: Let R be any of the following rings: the smooth functions on R^2n with the Poisson bracket, the Hamiltonian vector fields on a symplectic manifold, the Lie algebra of smooth complex vector fields on C, or a variety of rings of functions (real or complex valued) over 2nd countable spaces. Then if H is any other Polish ring and φ:H →R is an algebraic isomorphism, then it is also a topological isomorphism (i.e. a homeomorphism). Moreover, many such isomorphisms between function rings … more
Date: August 2010
Creator: McLinden, Alexander Patrick
Item Type: Refine your search to only Thesis or Dissertation
open access

Alternative Certification: A Comparison of Factors Affecting the Motivations of General and Special Educators

Description: This study was developed to examine the motivations of individuals who chose alternative routes to teacher certification and what they believe were the strengths and weaknesses of their alternative certification preparation (ACP). Data accrued from this study were based on a 55-item online survey and participant information from an online focus group. The study compared the differences between general and special educators in regards to the motivating factors affecting the decision to become a… more
Date: August 2010
Creator: Hogan, Kathleen Ann
Item Type: Refine your search to only Thesis or Dissertation
open access

An Analysis of the Pedagogical Advantages Relating to Combined Study of Euphonium and Trombone through the Use of Specific Repertoire

Description: Doubling is defined as playing two instruments. It is becoming increasingly necessary for low brass musicians to double in the course of their careers. Euphoniumists often learn trombone, and trombonists learn euphonium. The instruments share several surface similarities but also differ in many significant ways. Interviews with six professional doublers highlight strategies for learning, teaching, and performing on both trombone and euphonium. Slide and valve technique, adjustment of intonation… more
Date: August 2010
Creator: Lipton, Jamie
Item Type: Refine your search to only Thesis or Dissertation
open access

Analyzing Contingencies of Behavioral and Cultural Selection

Description: A choice paradigm was used to evaluate allocation of interlocking behavior of two groups of two participants between responses having operant consequences only and responses having cultural consequences. In a discrete trial BABABAB design, each participant could select one of three options, which delivered either 3 or 5 points. In B (cultural consequence) conditions, two of the options had additional effects: the 3-point option also added 3 points to the other participant's earnings, and one of… more
Date: August 2010
Creator: Hunter, Chad S.
Item Type: Refine your search to only Thesis or Dissertation
open access

Anchor Nodes Placement for Effective Passive Localization

Description: Wireless sensor networks are composed of sensor nodes, which can monitor an environment and observe events of interest. These networks are applied in various fields including but not limited to environmental, industrial and habitat monitoring. In many applications, the exact location of the sensor nodes is unknown after deployment. Localization is a process used to find sensor node's positional coordinates, which is vital information. The localization is generally assisted by anchor nodes that … more
Date: August 2010
Creator: Pasupathy, Karthikeyan
Item Type: Refine your search to only Thesis or Dissertation
open access

Antonín Dvořák’s Piano Concerto in G Minor, Opus 33: A Discussion of Musical Intent and Pianistic Effectiveness in Vilém Kurz's Version of the Solo Piano Part

Description: Since its premiere in 1878, Antonín Dvořák’s Piano Concerto in G Minor has been underrated and held in low regard by musicologists, critics, performers and audiences alike. Vilém Kurz (1872-1945), a Czech pianist and pedagogue, revised and reworked the piano solo part to incorporate what he considered to be added brilliance and pianistic effectiveness. However, the revised version has not increased the popularity of the work. In recent decades, this concerto has begun to appear more often in th… more
Date: August 2010
Creator: Tang, Wen-Chien
Item Type: Refine your search to only Thesis or Dissertation
open access

Anxiety, Depression, and Sleep Disorders: Their Relationship and Reduction with Neurotherapy

Description: This study investigated the relationship among anxiety, depression, and sleep disturbances and the treatment of these three disorders through neurotherapy. Research suggests that these conditions commonly co-occur in the general population and that central nervous system (CNS) arousal may play a primary role in the development and maintenance of these disorders. Several recent studies suggested that neurotherapy, a biofeedback-based treatment for CNS dysregulation, might be an effective treatme… more
Date: August 2010
Creator: Fisher, Christopher, Alan
Item Type: Refine your search to only Thesis or Dissertation
open access

Atomistic Studies of Point Defect Migration Rates in the Iron-Chromium System

Description: Generation and migration of helium and other point defects under irradiation causes ferritic steels based on the Fe-Cr system to age and fail. This is motivation to study point defect migration and the He equation of state using atomistic simulations due to the steels' use in future reactors. A new potential for the Fe-Cr-He system developed by collaborators at the Lawrence Livermore National Laboratory was validated using published experimental data. The results for the He equation of state ag… more
Date: August 2010
Creator: Hetherly, Jeffery
Item Type: Refine your search to only Thesis or Dissertation
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