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A Guide to Distributed Digital Preservation

Description: This text is a collection of essays that gives an overview of the reasons for considering distributed digital preservation (a system which maintains copies of digital objects in multiple geographic locations) as well as considerations for implementing this kind of digital preservation. According to the back cover, "Readers may use this guide to gain both a philosophical and practical understanding of the emerging field of distributed digital preservation, including how to establish or join a network."
Date: 2010
Creator: MetaArchive Cooperative

100% Renewable Energy - and Beyond - for Cities

Description: This booklet sketches out the options and the processes that have started to transform urban energy systems. The document promotes carbon neutrality for communities and cities and argues that even the largest cities can make this transition, drawing on renewable energy supplies from within their boundaries, as well as from farther away. In addition to assuring urban energy security, these developments can also stimulate the growth of a very large new green economy sector.
Date: March 2010
Creator: Droege, Peter

Winds of Change: East Asia's Sustainable Energy Future

Description: This report outlines the strategic direction of the energy sector to meet its growing energy demand in an environmentally-sustainable manner over the next two decades, and presents a pathway of policy frameworks and financing mechanisms to get there. This study found that large-scale deployment of energy efficiency and low-carbon technologies can simultaneously stabilize East Asia’s CO2 emissions by 2025 and significantly improve the local environment and enhance energy security, without compromising economic growth.
Date: May 2010
Creator: World Bank

United Nations Environment Programme 2009 Annual Report

Description: The 2009 UNEP annual report provides detailed information about various UNEP activities during the year of 2009, including analysis of the outcome of the Copenhagen United Nations Climate Change Conference. The report emphasizes the need to mobilize behind climate action in 2009 and to continue to ensure that environmental sustainability is recognized both as a legitmate goal in itself and as a means to achieving all other development objectives including the Millennium Development Goals.
Date: February 2010
Creator: United Nations Environment Programme

Infrastructure for the UNT Digital Library

Description: This presentation discusses the University of North Texas Libraries' Digital Projects Unit workflows, how they overcame challenges, and how the use of established models and standards helped them find solutions to the workflow. It presents the editing system created for the Digital Projects Unit, the organizational structure for each object, and identifiers.
Date: August 2, 2010
Creator: Phillips, Mark Edward

OAI-ORE

Description: This Tech Talk presentation discusses how the Open Archive Initiative (OAI) and the Object Reuse and Exchange (ORE) are used in the University of North Texas (UNT) Digital Library. OAI-ORE define the standards for the description and exchange of aggregations of Web resources.
Date: January 20, 2010
Creator: Phillips, Mark Edward

Comparison of Heteranthera Dubia (Jacq.) MacM.-associated Macroinvertebrates Between Georgraphical Regions in the United States

Description: Macroinvertebrates associated with the aquatic plant, water stargrass (Heteranthera dubia), were sampled from 12 waterbodies in four regions of the United States from June to August 2005. Taxa richness, evenness, and diversity were lowest in the Lower Midwest (LMW) region, and higher in Northern sites, especially the Upper Midwest (UMW), and Northeast (NE). While relative abundance varied from site to site and region to region, utilization of the plant by functional groups remained fairly constant. Collector-gatherers consistently comprised the largest portion of invertebrates sampled. The shredder/ herbivore functional group comprised an average of 17 % of total groups. Through an exhaustive literature review, it was found that shredder/ herbivores of water stargrass have not been reported in the literature. Because of this, the herbivore group was analyzed separately and consisted of 2,383 specimens representing 23 species. The most common groups were Rhopalosiphum sp., Nectopsyche spp. and chironomids. No differences were found in herbivore diversity or evenness between sampling regions, but species richness was significantly different.
Date: May 2010
Creator: Harms, Nathan Earl

Determination of the Optimal Number of Strata for Bias Reduction in Propensity Score Matching.

Description: Previous research implementing stratification on the propensity score has generally relied on using five strata, based on prior theoretical groundwork and minimal empirical evidence as to the suitability of quintiles to adequately reduce bias in all cases and across all sample sizes. This study investigates bias reduction across varying number of strata and sample sizes via a large-scale simulation to determine the adequacy of quintiles for bias reduction under all conditions. Sample sizes ranged from 100 to 50,000 and strata from 3 to 20. Both the percentage of bias reduction and the standardized selection bias were examined. The results show that while the particular covariates in the simulation met certain criteria with five strata that greater bias reduction could be achieved by increasing the number of strata, especially with larger sample sizes. Simulation code written in R is included.
Date: May 2010
Creator: Akers, Allen

Effect of Fluorine and Hydrogen Radical Species on Modified Oxidized Ni(pt)si

Description: NiSi is an attractive material in the production of CMOS devices. The problem with the utilization of NiSi, is that there is no proper method of cleaning the oxide on the surface. Sputtering is the most common method used for the cleaning, but it has its own complications. Dry cleaning methods include the reactions with radicals and these processes are not well understood and are the focus of the project. Dissociated NF3 and NH3 were used as an alternative and XPS is the technique to analyze the reactions of atomic fluorine and nitrogen with the oxide on the surface. A thermal cracker was used to dissociate the NF3 and NH3 into NFx+F and NHx+H. There was a formation of a NiF2 layer on top of the oxide and there was no evidence of nitrogen on the surface indicating that the fluorine and hydrogen are the reacting species. XPS spectra, however, indicate that the substrate SiO2 layer is not removed by the dissociated NF3 and NiF2 growth process. The NiF2 over layer can be reduced to metallic Ni by reacting with dissociated NH3 at room temperature. The atomic hydrogen from dissociated ammonia reduces the NiF2 but it was determined that the atomic hydrogen from the ammonia does not react with SiO2.
Date: May 2010
Creator: Gaddam, Sneha Sen

An Annotated Bibliography of Selected Music for Saxophone by Charles Ruggiero with an Analysis of Interplay for Soprano Saxophone and Piano

Description: Ruggiero's contributions to contemporary music are noteworthy. They include 27 works written for solo instruments, voice, as well as chamber groups and large ensembles. This study serves as an annotated bibliography of selected works written for saxophone by Charles Ruggiero. They include a piece for large chamber ensemble, Dig: From Tunes My Grandmother Heard (2009), a trio for flute, clarinet, and alto saxophone titled Echoes of "Piano Red" (2006), two saxophone quartets, Dig: JSB 1 (2003), and Three Blues for Saxophone Quartet (1981), two works for alto saxophone and piano, Night Songs and Flights of Fancy (2005), and Strayhorn (1999-2000), one piece for soprano saxophone and piano, Interplay for Soprano Saxophone and Piano (1988), a single movement work for alto saxophone, piano, winds, and percussion, Dance Complusions (2004), one duo for tenor saxophone and percussion, Sizzlesax II (2001), one concerto for soprano saxophone and piano, Concerto for Soprano Saxophone and Orchestra (1995, rev. 1999), and a trio for violin, alto saxophone, and piano, Dances and Other Movements (1983, rev. 1984). In addition, an analysis of Ruggiero's composition Interplay for Soprano Saxophone and Piano offers an insight into the compositional style of the composer.
Date: May 2010
Creator: Bradfield, Ann

An Exploration of the Relationship Between Principal Leadership Efficacy, Principal Computer Self-Efficacy, and Student Achievement

Description: The purpose of this study was to examine whether or not relationships exist between principals' technology proficiency and student achievement as indicated by 2008 Texas Assessment of Knowledge and Skills (TAKS) ninth grade reading scaled scores. Secondly, the study examined whether or not relationships exist between principals' leadership self efficacy and student achievement as indicated in the 2008 Texas Assessment of Knowledge and Skills (TAKS) ninth grade reading scaled scores. Lastly, the select principal's personal and school demographic variables (principal gender, total years of experience as a professional, total years as principal at current school, total years of principal experience, highest degree earned, school economic status, school size) were considered within the study. The survey instruments used in this study were the Technology Proficiency Self Assessment Scale (TPSA) developed by Ropp in 2000 and the Principal's Self-Efficacy Scale (PSES) developed by Tschannen-Moran and Garies in 2004. A total of 129 Texas principal's participated in the study. Multiple regressions were utilized and effect size was considered to determine the strength of the relationship between variables. A statistical significance was found relating to the school's social economic status only when using both the PSES and the TPSA instruments. The effect sizes reported were all moderate, which acknowledged that relationships did exist between all predictor variables tested. Based on the information provided for B weights, School's SES was found to be the best predictor of reading TAKS achievement, preceded by Principal's Highest Degree Earned and Gender. SPSS 16.0 was used to analyze all data. This study adds to the literature on principals' technology efficacy and principal's self efficacy.
Date: May 2010
Creator: Brown, Shelia

The Khan Variations for Solo Marimba by Alejandro Viñao: Musical Analysis and Performance Practice

Description: The Khan Variations is the first work for solo marimba by Argentinean composer Alejandro Viñao (b.1951). Since publication in 2001, Khan Variations has been performed at many international percussion festivals and is often a repertoire choice for performers in the final round of numerous marimba competitions. This thesis and accompanying lecture recital provide a supplemental guide to Alejandro Viñao's Khan Variations, focusing on analytical and structural theory, as well as performance practice, thus filling the void of information on this piece in the percussion community. Khan Variations was jointly commissioned by twelve of the world's prominent marimba performers and educators, including: Michael Burritt, Jack Van Geem, William Moersch, Robert Van Sice, and Nancy Zeltsman. The project organizer of the Khan Variations commission was Nancy Zeltsman, Chair of the Percussion Department at the Boston Conservatory and a leader in the field of commissioning new marimba works. Utilizing William Moersch's organization New Music Marimba as the financial conduit, Zeltsman and her group issued this commission in 1999. Alejandro Viñao studied composition with the Russian composer Jacobo Ficher in Buenos Aires, and Viñao later went on to complete his doctorate in composition from City University in London. His works span the genres of opera, choir, orchestra, electroacoustic chamber music, and more than twenty film scores. Viñao's composing style is influenced by Mexican-American composer Conlon Nancarrow and Islamic religious music known as Qawwali. Alejandro Viñao's works typically contain complex rhythmic structures and use rhythm as the main element for musical form and development. The impetus for this thesis is to provide a musical analysis and performance guide for The Khan Variations by Alejandro Viñao. This thesis also illuminates the significance of the joint commission led by Nancy Zeltsman, and highlights the influences and inspirations of Alejandro Viñao as a rising composer of international renown.
Date: May 2010
Creator: Roberts, John Francis

An Analysis of Interrater Agreement Between the Motivation Assessment Scale (MAS), Questions About Behavioral Function (QABF), and Analog Assessment Outcomes

Description: An analysis of interrater agreement across multiple respondents on anecdotal assessments was compared with experimental functional analysis outcomes for correspondence. Experiment 1 evaluated the agreement of multiple respondents on the function of problem behavior for 22 individuals across 42 target behaviors using the Motivation Assessment Scale (MAS) and the Questions About Behavioral Function (QABF). Results showed agreement on the primary maintaining consequence for 4 or 5 of the 5 respondents in 52% (22/42) of the individual's target behaviors with the MAS and 57% (24/42) with the QABF. Experiment 2 examined whether correspondence occurred between the anecdotal assessment results and experimental functional analysis (EFA) results for 7 individuals selected from Experiment 1. Correspondence between the QABF assessment and the EFA was found for 6 of 7 participants, and 4 of the 7 showed correspondence between the EFA and the MAS. This study showed that the QABF had higher correspondence with analog assessments than the MAS thus, supporting the previous findings of Paclawskyj et al. (2001).
Date: May 2010
Creator: Smith, Carla Michelle