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ANSI/ASHRAE/IES Standard 90.1-2010 Final Determination Quantitative Analysis (open access)

ANSI/ASHRAE/IES Standard 90.1-2010 Final Determination Quantitative Analysis

The U.S. Department of Energy (DOE) conducted a final quantitative analysis to assess whether buildings constructed according to the requirements of the American National Standards Institute (ANSI)/American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE)/Illuminating Engineering Society of North America (IESNA) Standard 90.1-2010 (ASHRAE Standard 90.1-2010, Standard 90.1-2010, or 2010 edition) would result in energy savings compared with buildings constructed to ANSI/ASHRAE/IESNA Standard 90.1-2007(ASHRAE Standard 90.1-2007, Standard 90.1-2007, or 2007 edition). The final analysis considered each of the 109 addenda to ASHRAE Standard 90.1-2007 that were included in ASHRAE Standard 90.1-2010. All 109 addenda processed by ASHRAE in the creation of Standard 90.1-2010 from Standard 90.1-2007 were reviewed by DOE, and their combined impact on a suite of 16 building prototype models in 15 ASHRAE climate zones was considered. Most addenda were deemed to have little quantifiable impact on building efficiency for the purpose of DOE's final determination. However, out of the 109 addenda, 34 were preliminarily determined to have a measureable and quantifiable impact. A suite of 240 computer energy simulations for building prototypes complying with ASHRAE 90.1-2007 was developed. These prototypes were then modified in accordance with these 34 addenda to create a second suite of corresponding building …
Date: October 31, 2011
Creator: Halverson, Mark A.; Rosenberg, Michael I. & Liu, Bing
Object Type: Report
System: The UNT Digital Library
ANSI/ASHRAE/IES Standard 90.1-2010 Final Qualitative Determination (open access)

ANSI/ASHRAE/IES Standard 90.1-2010 Final Qualitative Determination

A final qualitative analysis of all addenda to American National Standards Institute (ANSI)/American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE)/Illuminating Engineering Society of North America (IESNA) Standard 90.1-2007 (Standard 90.1-2007 or 2007 edition) that were included in ANSI/ASHRAE/IESNA Standard 90.1-2010 (Standard 90.1-2010 or 2010 edition) was conducted. All 109 addenda processed by ASHRAE in the creation of Standard 90.1-2010 from Standard 90.1-2007 were evaluated by DOE for their impact on energy efficiency. DOE determined whether each addendum would have a positive, neutral, or negative impact on overall building efficiency.
Date: October 31, 2011
Creator: Halverson, Mark A.; Rosenberg, Michael I.; Williamson, Jennifer L.; Richman, Eric E. & Liu, Bing
Object Type: Report
System: The UNT Digital Library
Application of Analytical Heat Transfer Models of Multi-layered Natural and Engineered Barriers in Potential High-Level Nuclear Waste Repositories (open access)

Application of Analytical Heat Transfer Models of Multi-layered Natural and Engineered Barriers in Potential High-Level Nuclear Waste Repositories

None
Date: October 31, 2011
Creator: Greenberg, H. R.; Blink, J. A.; Sutton, M.; Fratoini, M. & Ross, A. D.
Object Type: Article
System: The UNT Digital Library
Biosurveillance: Nonfederal Capabilities Should Be Considered in Creating a National Biosurveillance Strategy (open access)

Biosurveillance: Nonfederal Capabilities Should Be Considered in Creating a National Biosurveillance Strategy

A letter report issued by the Government Accountability Office with an abstract that begins "The nation is at risk for a catastrophic biological event. The Implementing Recommendations of the 9/11 Commission Act directed GAO to report on biosurveillance--to help detect and respond to such events--at multiple jurisdictional levels. In June 2010, GAO recommended that the National Security Staff lead the development of a national biosurveillance strategy, which is now under development. This report focuses on nonfederal jurisdictions, which own many of the resources that support a national capability. It discusses (1) federal support for state and local biosurveillance; (2) state and local challenges; (3) federal support and challenges for tribal and insular areas and (4) federal assessments of nonfederal capabilities. To conduct this work, GAO interviewed select federal-agency, jurisdiction, and association officials and reviewed relevant documents. To collect information on federal efforts and challenges, we also sent standardized questionnaires to seven states and two cities."
Date: October 31, 2011
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
A compact neutron generator using a field ionization source (open access)

A compact neutron generator using a field ionization source

Field ionization as a means to create ions for compact and rugged neutron sources is pursued. Arrays of carbon nano-#12;bers promise the high #12;eld-enhancement factors required for efficient field ionization. We report on the fabrication of arrays of #12;field emitters with a density up to 10{sup 6} tips/cm{sup 2} and measure their performance characteristics using electron field emission. The critical issue of uniformity is discussed, as are efforts towards coating the nano-fibers to enhance their lifetime and surface properties.
Date: October 31, 2011
Creator: Persaud, Arun; Waldmann, Ole; Kapadia, Rehan; Takei, Kuniharu; Javey, Ali & Schenkel, Thomas
Object Type: Article
System: The UNT Digital Library
Comparison of Carbon and Hi-Z Primary Collimators for the LHC Phase II Collimation System (open access)

Comparison of Carbon and Hi-Z Primary Collimators for the LHC Phase II Collimation System

A current issue with the LHC collimation system is single-diffractive, off-energy protons from the primary collimators that pass completely through the secondary collimation system and are absorbed immediately downbeam in the cold magnets of the dispersion suppressor section. Simulations suggest that the high impact rate could result in quenching of these magnets. We have studied replacing the 60 cm primary graphite collimators, which remove halo mainly by inelastic strong interactions, with 5.25 mm tungsten, which remove halo mainly by multiple coulomb scattering and thereby reduce the rate of single-diffractive interactions that cause losses in the dispersion suppressor.
Date: October 31, 2011
Creator: Keller, Lewis; /SLAC; Markiewicz, Thomas; /SLAC; Smith, Jeffrey; /SLAC et al.
Object Type: Article
System: The UNT Digital Library
Design, Test and Demonstration of Saturable Reactor High-Temperature Superconductor Fault Current Limiters (open access)

Design, Test and Demonstration of Saturable Reactor High-Temperature Superconductor Fault Current Limiters

Zenergy Power has successfully designed, built, tested, and installed in the US electrical grid a saturable reactor Fault Current Limiter. Beginning in 2007, first as SC Power Systems and from 2008 as Zenergy Power, Inc., ZP used DOE matching grant and ARRA funds to help refine the design of the saturated reactor fault current limiter. ZP ultimately perfected the design of the saturated reactor FCL to the point that ZP could reliably design a suitable FCL for most utility applications. Beginning with a very basic FCL design using 1G HTS for a coil housed in a LN2 cryostat for the DC bias magnet, the technology progressed to a commercial system that was offered for sale internationally. Substantial progress was made in two areas. First, the cryogenics cooling system progressed from a sub-cooled liquid nitrogen container housing the HTS coils to cryostats utilizing dry conduction cooling and reaching temperatures down to less than 20 degrees K. Large, round cryostats with “warm bore” diameters of 1.7 meters enabled the design of large tanks to hold the AC components. Second, the design of the AC part of the FCL was refined from a six legged “spider” design to a more compact and lighter …
Date: October 31, 2011
Creator: Darmann, Frank; Lombaerde, Robert; Moriconi, Franco & Nelson, Albert
Object Type: Report
System: The UNT Digital Library

[Dia de los Muertos table]

A photograph of the altar for Dia de los Muertos set up on the UNT campus. There is a lace cloth over the table and yellow flowers and skulls decorate it. There are also cut paper flags on strings above it. There are book cases visible past the set-up.
Date: 2011-10-31/2011-11-02
Creator: University of North Texas. Multicultural Center.
Object Type: Photograph
System: The UNT Digital Library

Doctoral Recital: 2011-10-31 - Andrew Martz, alto saxophone

Recital presented at the UNT Voertman Hall in partial fulfillment of the Doctor of Musical Arts (DMA) degree.
Date: October 31, 2011
Creator: Martz, Andrew
Object Type: Sound
System: The UNT Digital Library

Doctoral Recital: 2011-10-31 – Andrew Martz, alto saxophone and Nataliya Sukhina, piano

Recital presented at the UNT College of Music Voertman Hall in partial fulfillment of the Doctor of Musical Arts (DMA) degree.
Date: October 31, 2011
Creator: Martz, Andrew & Sukhina, Nataliya
Object Type: Video
System: The UNT Digital Library
The Education of Students with Disabilities: Alignment Between the Elementary and Secondary Education Act and the Individuals with Disabilities Education Act (open access)

The Education of Students with Disabilities: Alignment Between the Elementary and Secondary Education Act and the Individuals with Disabilities Education Act

This report focuses on four broad policy issues within both the ESEA and IDEA, which potentially create differing expectations or requirements for schools and teachers educating students with disabilities.
Date: October 31, 2011
Creator: Lomax, Erin D. & Lordeman, Ann
Object Type: Report
System: The UNT Digital Library

Ensemble: 2011-10-31 – Tuba-Euphonium Ensembles

Access: Use of this item is restricted to the UNT Community
Concert presented at the UNT College of Music Voertman Hall.
Date: October 31, 2011
Creator: University of North Texas. 8:00 Tuba-Euphonium Choir.
Object Type: Sound
System: The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Monday, October 31, 2011 (open access)

The Express-Star (Chickasha, Okla.), Ed. 1 Monday, October 31, 2011

Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date: October 31, 2011
Creator: DeSilver, Debi
Object Type: Newspaper
System: The Gateway to Oklahoma History
Extreme Performance Scalable Operating Systems Final Progress Report (July 1, 2008 - October 31, 2011) (open access)

Extreme Performance Scalable Operating Systems Final Progress Report (July 1, 2008 - October 31, 2011)

This is the final progress report for the FastOS (Phase 2) (FastOS-2) project with Argonne National Laboratory and the University of Oregon (UO). The project started at UO on July 1, 2008 and ran until April 30, 2010, at which time a six-month no-cost extension began. The FastOS-2 work at UO delivered excellent results in all research work areas: * scalable parallel monitoring * kernel-level performance measurement * parallel I/0 system measurement * large-scale and hybrid application performance measurement * onlne scalable performance data reduction and analysis * binary instrumentation
Date: October 31, 2011
Creator: Malony, Allen D. & Shende, Sameer
Object Type: Report
System: The UNT Digital Library
Final Progress Report (open access)

Final Progress Report

In this project we have established guidelines for the design on organic chromophores suitable for producing high triplet yields via singlet fission. We have proven their utility by identifying a chromophore of a structural class that had never been examined for singlet fission before, 1,3-diphenylisobenzofuran, and demonstrating in two independent ways that a thin layer of this material produces a triplet yield of 200% within experimental error. We have also designed a second chromophore of a very different type, again of a structural class that had not been examined for singlet fission before, and found that in a thin layer it produces a 70% triplet yield. Finally, we have enhanced the theoretical understanding of the quantum mechanical nature of the singlet fission process.
Date: October 31, 2011
Creator: Michl, Josef
Object Type: Report
System: The UNT Digital Library
For-Profit Schools: Experiences of Undercover Students Enrolled in Online Classes at Selected Colleges (open access)

For-Profit Schools: Experiences of Undercover Students Enrolled in Online Classes at Selected Colleges

A letter report issued by the Government Accountability Office with an abstract that begins "Once comprised of local, sole-proprietor ownership, the nation's for-profit institutions now range from small, privately owned schools to publicly traded corporations. Enrollment in such colleges has grown far faster than in traditional higher-education institutions. Moreover, during the 2009-2010 school year, for-profit colleges received almost $32 billion in grants and loans provided to students under federal student aid programs, as authorized under Title IV of the Higher Education Act of 1965, as amended. Because of interest in the student experience at for-profit colleges, GAO was asked to conduct undercover testing by enrolling in online classes under degree-granting programs. To conduct this testing, GAO selected 15 for-profit colleges using a selection process that included the 5 largest colleges and a random sample and attempted to enroll using fictitious identities. Once enrolled, each fictitious student engaged in behaviors consistent with substandard academic performance. Each fictitious identity enrolled for approximately one term, as defined by the college. The experience of each of GAO's undercover students is unique and cannot be generalized to other students taking courses offered by the for-profit colleges we tested or to other for-profit or nonprofit colleges. …
Date: October 31, 2011
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library

Forgiveness: Moderating the Relationship Between Coming Out and Shame Due to Heterosexism

This poster seeks to identify the psychosocial hurdles surrounding the coming out process of the lesbian, gay, and bisexual community.
Date: October 31, 2011
Creator: Goodman, Rachel; Chng, Chwee-Lye; Willingham, Jordan & Vosvick, Mark A.
Object Type: Poster
System: The UNT Digital Library
[Funeral Program for Leevorn Thompson, Sr., October 31, 2011] (open access)

[Funeral Program for Leevorn Thompson, Sr., October 31, 2011]

Funeral program for Deacon Leevorn (Rush) Thompson Senior, born August 6, 1928 and died October 25, 2011. The funeral was held October 31, 2011 at Saint Stephens Baptist Church, officiated by Reverend Charles M. Biggs. Funeral arrangements were made through Lewis Funeral Home and he was buried in Southern Memorial Park in San Antonio, Texas.
Date: October 31, 2011
Creator: unknown
Object Type: Pamphlet
System: The Portal to Texas History
Geothermal Academy: Focus Center for Data Collection, Analysis, and Dissemination (open access)

Geothermal Academy: Focus Center for Data Collection, Analysis, and Dissemination

Geothermal Academy: A Pathway for Confirmation of Ground-Source Heat Pumps in the United States. In 2008, Oak Ridge National Laboratory issued a report on geothermal heats pumps (GHPs) focused on the market status, barriers to adoption, and actions to overcome these barriers (Hughes 2008). Of the barriers raised in this report, of the most pressing is the lack of performance and energy usage data for GHPs. Further, an associated barrier is a lack of a fair comparison of the energy usage of conventional heating and cooling systems for the same building. Because of these barriers, we are not able to say how much energy is used by well-designed GHP systems on a long-term basis, nor are we able to say how better their energy usage is compared to conventional systems. The need for a fair comparison with conventional systems is particularly relevant as modern versions of conventional air conditioners, gas furnaces, and boilers have also incorporated energy saving technologies. As a first step to address this barrier, the Geothermal Academy has developed a framework for data collection. This framework has already been applied to several geothermal installations in Colorado (Nakagawa etal. 2010). The framework classifies data into different categories based …
Date: October 31, 2011
Creator: Nakagawa, Masami; Fujiono, Hendro; McCartney, John S. & Reed, Adam
Object Type: Report
System: The UNT Digital Library
A Guidebook for Low-Carbon Development at the Local Level (open access)

A Guidebook for Low-Carbon Development at the Local Level

This report aims to provide a manual with a menu of the successful policies and measures for local governments in China to create low carbon plan or climate action plans. This manual includes a comprehensive list of successful policies and best practices.
Date: October 31, 2011
Creator: Zhou, Nan; Price, Lynn; Ohshita, Stephanie; Zheng, Nina & Min, Hu
Object Type: Report
System: The UNT Digital Library
High-efficiency photovoltaics based on semiconductor nanostructures (open access)

High-efficiency photovoltaics based on semiconductor nanostructures

The objective of this project was to exploit a variety of semiconductor nanostructures, specifically semiconductor quantum wells, quantum dots, and nanowires, to achieve high power conversion efficiency in photovoltaic devices. In a thin-film device geometry, the objectives were to design, fabricate, and characterize quantum-well and quantum-dot solar cells in which scattering from metallic and/or dielectric nanostructures was employed to direct incident photons into lateral, optically confined paths within a thin (~1-3um or less) device structure. Fundamental issues concerning nonequilibrium carrier escape from quantum-confined structures, removal of thin-film devices from an epitaxial growth substrate, and coherent light trapping in thin-film photovoltaic devices were investigated. In a nanowire device geometry, the initial objectives were to engineer vertical nanowire arrays to optimize optical confinement within the nanowires, and to extend this approach to core-shell heterostructures to achieve broadspectrum absorption while maintaining high opencircuit voltages. Subsequent work extended this approach to include fabrication of nanowire photovoltaic structures on low-cost substrates.
Date: October 31, 2011
Creator: Yu, Paul K. L.; Yu, Edward T. & Wang, Deli
Object Type: Report
System: The UNT Digital Library
High Temperature Gas Reactors: Assessment of Applicable Codes and Standards (open access)

High Temperature Gas Reactors: Assessment of Applicable Codes and Standards

Current interest expressed by industry in HTGR plants, particularly modular plants with power up to about 600 MW(e) per unit, has prompted NRC to task PNNL with assessing the currently available literature related to codes and standards applicable to HTGR plants, the operating history of past and present HTGR plants, and with evaluating the proposed designs of RPV and associated piping for future plants. Considering these topics in the order they are arranged in the text, first the operational histories of five shut-down and two currently operating HTGR plants are reviewed, leading the authors to conclude that while small, simple prototype HTGR plants operated reliably, some of the larger plants, particularly Fort St. Vrain, had poor availability. Safety and radiological performance of these plants has been considerably better than LWR plants. Petroleum processing plants provide some applicable experience with materials similar to those proposed for HTGR piping and vessels. At least one currently operating plant - HTR-10 - has performed and documented a leak before break analysis that appears to be applicable to proposed future US HTGR designs. Current codes and standards cover some HTGR materials, but not all materials are covered to the high temperatures envisioned for HTGR use. …
Date: October 31, 2011
Creator: McDowell, Bruce K.; Nickolaus, James R.; Mitchell, Mark R.; Swearingen, Gary L. & Pugh, Ray
Object Type: Report
System: The UNT Digital Library
[Historic Marker Application: Hill & Sara McClanahan House] (open access)

[Historic Marker Application: Hill & Sara McClanahan House]

Application materials submitted to the Texas Historical Commission requesting a historic marker for the Hill and Sara McClanahan House, in Cleveland, Texas. The materials include the inscription text of the marker, original application, narrative, floor plans, and photographs.
Date: October 31, 2011
Creator: Texas Historical Commission
Object Type: Text
System: The Portal to Texas History
Incorporating Experience Curves in Appliance Standards Analysis (open access)

Incorporating Experience Curves in Appliance Standards Analysis

The technical analyses in support of U.S. energy conservation standards for residential appliances and commercial equipment have typically assumed that manufacturing costs and retail prices remain constant during the projected 30-year analysis period. There is, however, considerable evidence that this assumption does not reflect real market prices. Costs and prices generally fall in relation to cumulative production, a phenomenon known as experience and modeled by a fairly robust empirical experience curve. Using price data from the Bureau of Labor Statistics, and shipment data obtained as part of the standards analysis process, we present U.S. experience curves for room air conditioners, clothes dryers, central air conditioners, furnaces, and refrigerators and freezers. These allow us to develop more representative appliance price projections than the assumption-based approach of constant prices. These experience curves were incorporated into recent energy conservation standards for these products. The impact on the national modeling can be significant, often increasing the net present value of potential standard levels in the analysis. In some cases a previously cost-negative potential standard level demonstrates a benefit when incorporating experience. These results imply that past energy conservation standards analyses may have undervalued the economic benefits of potential standard levels.
Date: October 31, 2011
Creator: Garbesi, Karina; Chan, Peter; Greenblatt, Jeffery; Kantner, Colleen; Lekov, Alex; Meyers, Stephen et al.
Object Type: Article
System: The UNT Digital Library