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The Influence Of Jazz On Timbre In Selected Compositions For Solo Trombone
A significant body of solo literature for the trombone has been written in the last fifty years that draws as much from the jazz tradition as from that of European classical music. While much attention has been paid to these works' use of characteristic jazz rhythms, harmonies and melodic inflections, there has been little focus on timbre, the musical element that perhaps most readily distinguishes jazz from other styles of Western music. This paper focuses on the important role jazz timbres should play in a performer's interpretation of those works that are significantly influenced by jazz. It includes explorations of the significant differences in concepts of timbre between European classical music and jazz, some of the ways in which these timbral differences are produced, and methods by which performers can develop the skills necessary to produce these varied timbres. Particular attention is paid to the importance of timbre to idiomatically appropriate performances of two significant works from the solo trombone repertoire, Robert Suderburg's Night Set (Chamber Music III) and Richard Peaslee's Arrows of Time.
Date:
December 2002
Creator:
Aldag, Daniel J.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Development of a Procedure to Evaluate Groundwater Quality and Potential Sources of Contamination in the East Texas Basin
Access:
Use of this item is restricted to the UNT Community
This study contributes a procedure, based on data analysis and geostatistical methods, to evaluate the distribution of chemical ratios and differentiate natural and anthropogenic contaminant sources of groundwater quality in the East Texas Basin. Four aquifers were studied, Sparta, Queen City, Carrizo and Wilcox. In this study, Carrizo- Wilcox is considered as one aquifer, and Sparta-Queen City as another. These aquifers were divided into depth categories, 0-150 feet for Sparta-Queen City and 300-600 feet and 600-900 feet for Carrizo-Wilcox in order to identify individual sources of contamination. Natural sources include aquifer mineral make up, salt domes and lignite beds. Major anthropogenic sources include lignite and salt dome mining and oil-gas production. Chemical ratios selected were Na/Cl, Ca/Cl, Mg/Cl, SO4/Cl, (Na+Cl)/TDS, SO4/Ca and (Ca+Mg)/(Na+K). Ratio distributions and their relationships were examined to evaluate physical-chemical processes occurring in the study area. Potential contaminant sources were used to divide the Basin into three areas: Area 1 to the east, Area 2 in the west and Area 3 in the center. Bivariate analysis was used to uncover differences between the areas. The waters in Area 1 are potentially impacted primarily from oil field waters. Sources present in Area 2 include lignite beds and oil …
Date:
May 2001
Creator:
Alderman, John H.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
To Include or not to Include: Early Childhood Preservice Educators' Beliefs, Attitudes, and Knowledge about Students with Disabilities
The first purpose of this study was to develop and validate the Inventory of Opinions About Persons with Disabilities (IOPD). The IOPD was developed to collect preservice early childhood educators’self-report data related to inclusion. A total of 332 participants enrolled in graduate programs in a college of education served as the validation sample. After validation and revision of the IOPD, the researcher used the instrument to investigate preservice early childhood educators’ beliefs, attitudes, and knowledge about students with disabilities and their inclusion in general education classrooms. Data were collected from 172 participants from 10 universities in Texas during their student teaching/final intern semesters. This research demonstrated that an instrument, the IOPD, could be developed to effectively measure preservice early childhood educators’ beliefs, attitudes, and knowledge about the inclusion of children with disabilities in their classrooms. The participants reported positive self-perceptions (mean = 2.0388) about their beliefs and attitudes toward inclusion. However, the participants reported less positive attitudes about training (mean = -.09884). Discriminant function analyses indicated a negligible statistical effect for type of program (professional development school or traditional) and a statistically significant effect for preferred classroom setting (non-inclusive, special education, inclusive). Further research with the same participants or similar …
Date:
August 2000
Creator:
Aldrich, Jennifer E.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Comparison and Evaluation of Existing Analog Circuit Simulator using Sigma-Delta Modulator
Access:
Use of this item is restricted to the UNT Community
In the world of VLSI (very large scale integration) technology, there are many different types of circuit simulators that are used to design and predict the circuit behavior before actual fabrication of the circuit. In this thesis, I compared and evaluated existing circuit simulators by considering standard benchmark circuits. The circuit simulators which I evaluated and explored are Ngspice, Tclspice, Winspice (open source) and Spectre® (commercial). I also tested standard benchmarks using these circuit simulators and compared their outputs. The simulators are evaluated using design metrics in order to quantify their performance and identify efficient circuit simulators. In addition, I designed a sigma-delta modulator and its individual components using the analog behavioral language Verilog-A. Initially, I performed simulations of individual components of the sigma-delta modulator and later of the whole system. Finally, CMOS (complementary metal-oxide semiconductor) transistor-level circuits were designed for the differential amplifier, operational amplifier and comparator of the modulator.
Date:
December 2006
Creator:
Ale, Anil Kumar
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Kinetic studies and computational modeling of atomic chlorine reactions in the gas phase.
The gas phase reactions of atomic chlorine with hydrogen sulfide, ammonia, benzene, and ethylene are investigated using the laser flash photolysis / resonance fluorescence experimental technique. In addition, the kinetics of the reverse processes for the latter two elementary reactions are also studied experimentally. The absolute rate constants for these processes are measured over a wide range of conditions, and the results offer new accurate information about the reactivity and thermochemistry of these systems. The temperature dependences of these reactions are interpreted via the Arrhenius equation, which yields significantly negative activation energies for the reaction of the chlorine atom and hydrogen sulfide as well as for that between the phenyl radical and hydrogen chloride. Positive activation energies which are smaller than the overall endothermicity are measured for the reactions between atomic chlorine with ammonia and ethylene, which suggests that the reverse processes for these reactions also possess negative activation energies. The enthalpies of formation of the phenyl and β-chlorovinyl are assessed via the third-law method. The stability and reactivity of each reaction system is further rationalized based on potential energy surfaces, computed with high-level ab initio quantum mechanical methods and refined through the inclusion of effects which arise from the …
Date:
August 2009
Creator:
Alecu, Ionut M.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Barriers to Adopting PREMIS in Cultural Heritage Institutions: An Exploratory Study
Paper for the 2009 IS&T Archiving Conference. This paper discusses an exploratory study on barriers to adopting PREMIS in cultural heritage institutions.
Date:
May 2009
Creator:
Alemneh, Daniel Gelaw
Object Type:
Paper
System:
The UNT Digital Library
Employing Diffusion of Innovation Theory for Examining Adoption and Implementation of Preservation Metadata in the Cultural Heritage Community: An Exploratory Study
Poster presented at the 2006 ALISE Conference (Doctoral Poster session). The poster was one of the five award-winning poster presentations for the best doctoral dissertation proposal.
Date:
January 2006
Creator:
Alemneh, Daniel Gelaw
Object Type:
Poster
System:
The UNT Digital Library
An Examination of the Adoption of Preservation Metadata in Cultural Heritage Institutions: An Exploratory Study Using Diffusion of Innovations Theory
Digital preservation is a significant challenge for cultural heritage institutions and other repositories of digital information resources. Recognizing the critical role of metadata in any successful digital preservation strategy, the Preservation Metadata Implementation Strategies (PREMIS) has been extremely influential on providing a "core" set of preservation metadata elements that support the digital preservation process. However, there is no evidence, in the form of previous research, as to what factors explain and predict the level of adoption of PREMIS. This research focused on identifying factors that affect the adoption of PREMIS in cultural heritage institutions. This study employed a web-based survey to collect data from 123 participants in 20 country as well as a semi-structured, follow-up telephone interview with a smaller sample of the survey respondents. Roger's diffusion of innovation theory was used as a theoretical framework. The main constructs considered for the study were relative advantage, compatibility, complexity, trialability, observability, and institution readiness. The study yielded both qualitative and quantitative data, and analysis showed that all six factors influence the adoption of PREMIS in varying degrees. Results of a regression analysis of adoption level on the six factors showed a statistically significant relationship. The R2 value for the model was …
Date:
May 2009
Creator:
Alemneh, Daniel Gelaw
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Expanding the Search for Digital Preservation Solutions: Adopting PREMIS in Cultural Heritage Institutions
Paper accompanying a poster presentation for the 2009 ACM/IEEE-CS Joint Conference on Digital Libraries. This paper provides some preliminary results on factors that affect the adoption of PREMIS (Preservation Metadata Implementation Strategies) in cultural heritage institutions.
Date:
2009
Creator:
Alemneh, Daniel Gelaw
Object Type:
Paper
System:
The UNT Digital Library
Expanding the Search for Digital Preservation Solutions [Poster]
Poster presented at the 2009 ACM/IEEE-CS Joint Conference on Digital Libraries. The poster provides some preliminary results on factors that affect the adoption of PREMIS (Preservation Metadata Implementation Strategies) in cultural heritage institutions.
Date:
2009
Creator:
Alemneh, Daniel Gelaw
Object Type:
Poster
System:
The UNT Digital Library
Folksonomy
This Tech Talk presentation explores Folksonomy. The author explores some of the more common aspects of folksonomies in the context of Web 2.0.
Date:
July 2, 2008
Creator:
Alemneh, Daniel Gelaw
Object Type:
Presentation
System:
The UNT Digital Library
The Future is in the Preservation Metadata
This presentation discusses the issue of digital preservation and how metadata provides a critical part of the solution to the preservation challenges from detecting preservation threats to promoting preventative measures.
Date:
2003
Creator:
Alemneh, Daniel Gelaw
Object Type:
Presentation
System:
The UNT Digital Library
Implementing a Robust Architecture for a Centralized Portal System
Poster presented at the 2005 ALISE Annual Conference. This poster discusses the architecture for a centralized portal system.
Date:
January 2005
Creator:
Alemneh, Daniel Gelaw
Object Type:
Poster
System:
The UNT Digital Library
An Introduction to MODS: The Metadata Object Description Schema
This Tech Talks presentation offers an introduction to MODS. The presenter utilizes real life examples to show how MODS can be used with the Metadata Encoding and Transmission Standard (METS).
Date:
October 17, 2007
Creator:
Alemneh, Daniel Gelaw
Object Type:
Presentation
System:
The UNT Digital Library
Maintaining Quality Metadata: Toward Effective Digital Resource Lifecycle Management
Book chapter on maintaining quality metadata and effective digital resource lifecycle management.
Date:
2008
Creator:
Alemneh, Daniel Gelaw
Object Type:
Book Chapter
System:
The UNT Digital Library
Maintaining Quality Metadata: Toward Effective Digital Resource Lifecycle Management
This presentation discusses the critical issues of metadata quality in digital libraries and describes the efforts being made by the University of North Texas Libraries to ensure metadata quality at various levels of digital resources' life cycle.
Date:
2008
Creator:
Alemneh, Daniel Gelaw
Object Type:
Presentation
System:
The UNT Digital Library
Metadata Enhancements and Quality Assurance Mechanisms
Abstract document accompanying a poster presentation for the 2008 ALISE Annual Conference (Work in Progress session. The topic is maintaining usable and sustainable digital collections using a complex set of actions and some of the tools and quality assurance mechanisms used at the University of North Texas (UNT) Libraries.
Date:
2008
Creator:
Alemneh, Daniel Gelaw
Object Type:
Text
System:
The UNT Digital Library
Metadata Enhancements and Quality Assurance Mechanisms [Poster]
This poster presentation was presented at the 2008 Association for Library and Information Science Education (ALISE) conference (Work in Progress session). The poster discusses that maintaining usable and sustainable digital collections requires a complex set of actions, and demonstrates some of the tools and quality assurance mechanisms used at the UNT Libraries.
Date:
2008
Creator:
Alemneh, Daniel Gelaw
Object Type:
Poster
System:
The UNT Digital Library
Metadata Madness: Quality Issues in Metadata Management
This presentation provides an introductory discussion on metadata quality issues. It outlines factors that influence metadata quality including the resource types, local requirements, collaborators' requirements, and cost issues and addresses how to manage metadata quality.
Date:
2007
Creator:
Alemneh, Daniel Gelaw
Object Type:
Presentation
System:
The UNT Digital Library
Metadata Quality: A Phased Approach to Ensuring Long-Term Access to Digital Resources
Paper accompanying a poster presentation at the 2009 ASIS&T Annual Meeting. This paper discusses metadata quality and a phased approach to ensuring long-term access to digital resources.
Date:
2009
Creator:
Alemneh, Daniel Gelaw
Object Type:
Paper
System:
The UNT Digital Library
Metadata Quality: A Phased Approach to Ensuring Long-Term Access to Digital Resources [Poster]
Poster presented at the 2009 ASIS&T Annual Meeting. This poster discusses how an effective metadata management approach can help institutions improve consistency, clarity of lineage, and relationships to that they can better use, reuse, and integrate resources.
Date:
2009
Creator:
Alemneh, Daniel Gelaw
Object Type:
Poster
System:
The UNT Digital Library
The 'Texas Register' Web-Site Creations and Related Processes: Revised Report - 2003
Report on the Texas Register, a weekly publication by the Office of the Secretary of State. This report discusses a partnership between the University of North Texas (UNT) Libraries and the Office of the Secretary of State to insure permanent storage and public access to the non-current electronic files of the Texas Register.
Date:
2004
Creator:
Alemneh, Daniel Gelaw
Object Type:
Report
System:
The UNT Digital Library
Meeting the Digital Resource Preservation Challenges: The University of North Texas Libraries Initiative
This presentation describes the University of North Texas Libraries' initiatives to ensure long-term access to various digital resources.
Date:
2002
Creator:
Alemneh, Daniel Gelaw & Hartman, Cathy Nelson
Object Type:
Presentation
System:
The UNT Digital Library
Developing the ICT Infrastructure for Africa: Overview of Barriers to Harnessing the Full Power of the Internet
Article on developing the Information Communication Technologies (ICT) for Africa and an overview of the barriers to harnessing the full power of the internet.
Date:
2006
Creator:
Alemneh, Daniel Gelaw & Hastings, Samantha Kelly
Object Type:
Article
System:
The UNT Digital Library