Air Force KC-X Tanker Aircraft Program: Background and Issues for Congress (open access)

Air Force KC-X Tanker Aircraft Program: Background and Issues for Congress

This report discusses the issues for Congress in FY2011, which are whether to approve, reject, or modify DOD's new KC-X competition strategy, and whether to approve, reject, or modify the Air Force's request for FY2011 research and development funding for the new KC-X program. Congress' decision on these issues could affect DOD capabilities and funding requirements, and the aircraft manufacturing industrial base.
Date: May 14, 2010
Creator: Gertler, Jeremiah
Object Type: Report
System: The UNT Digital Library
A Benchmark Comparison of Monte Carlo Particle Transport Algorithms for Binary Stochastic Mixtures (open access)

A Benchmark Comparison of Monte Carlo Particle Transport Algorithms for Binary Stochastic Mixtures

None
Date: May 14, 2010
Creator: Brantley, P
Object Type: Article
System: The UNT Digital Library
Business Continuity Planning Resources for Small- and Medium-Sized Businesses (open access)

Business Continuity Planning Resources for Small- and Medium-Sized Businesses

This document/memo summarizes existing resources and guidance on business continuity planning for small- to medium-sized businesses. DTRA will share this information with large commercial businesses who identified the need to help their suppliers and other key collaborators prepare business continuity plans in order to speed recovery from a wide-area bioterrorism incident.
Date: May 14, 2010
Creator: Judd, Kathleen S. & Lesperance, Ann M.
Object Type: Report
System: The UNT Digital Library
Characterization of the role of Fhit in maintenance of genomic integrity following low dose radiation, in vivo and in vitro (open access)

Characterization of the role of Fhit in maintenance of genomic integrity following low dose radiation, in vivo and in vitro

The major goal of this study is to determine the effects of the Fhit pathway on low dose (< 0.1 Gy) ionizing radiation (IR)-induced genetic instability. Reduction of Fhit protein expression is observed in most solid tumors particularly in those tumors resulting from exposure to environmental carcinogens. Therefore, characterization of the role of the Fhit-dependent pathway in preventing low dose IR-induced genetic instability will provide useful parameters for evaluating the low dose IR-induced risk of mutagenesis and carcinogenesis. We pursued 3 specific aims to study our hypothesis that the Fhit-dependent pathways maintain genomic integrity through adjusting checkpoint response and repair genes expression following low dose IR. Aim 1: Determine whether Fhit interaction with RPA is necessary for Fhit to affect the cellular response to low dose IR. We combined the approaches of in vitro (GST pull-down and site-directed mutagenesis) and in vivo (observing the co-localization and immunoprecipitation of Fhit and RPA in Fhit knock out mouse cells transfected with mutant Fhit which has lost ability to interact with RPA in vitro). Aim 2: Determine the role of genes whose expression is affected by Fhit in low dose irradiated cells. We analyzed the distinct signature of gene expression in low dose …
Date: May 14, 2010
Creator: Wang, Ya
Object Type: Report
System: The UNT Digital Library
Comparison of Demand Response Performance with an EnergyPlus Model in a Low Energy Campus Building (open access)

Comparison of Demand Response Performance with an EnergyPlus Model in a Low Energy Campus Building

We have studied a low energy building on a campus of the University of California. It has efficient heating, ventilation, and air conditioning (HVAC) systems, consisting of a dual-fan/dual-duct variable air volume (VAV) system. As a major building on the campus, it was included in two demand response (DR) events in the summers of 2008 and 2009. With chilled water supplied by thermal energy storage in the central plant, cooling fans played a critical role during DR events. In this paper, an EnergyPlus model of the building was developed and calibrated. We compared both whole-building and HVAC fan energy consumption with model predictions to understand why demand savings in 2009 were much lower than in 2008. We also used model simulations of the study building to assess pre-cooling, a strategy that has been shown to improve demand saving and thermal comfort in many types of building. This study indicates a properly calibrated EnergyPlus model can reasonably predict demand savings from DR events and can be useful for designing or optimizing DR strategies.
Date: May 14, 2010
Creator: Dudley, Junqiao Han; Black, Doug; Apte, Mike; Piette, Mary Ann & Berkeley, Pam
Object Type: Article
System: The UNT Digital Library
Depot Maintenance: Improved Strategic Planning Needed to Ensure That Air Force Depots Can Meet Future Maintenance Requirements (open access)

Depot Maintenance: Improved Strategic Planning Needed to Ensure That Air Force Depots Can Meet Future Maintenance Requirements

A letter report issued by the Government Accountability Office with an abstract that begins "The Air Force's maintenance depots provide critical support to ongoing operations around the world. Previously, the Department of Defense's (DOD) increased reliance on the private sector for depot maintenance support, coupled with downsizing, led to a general deterioration in the capabilities, reliability, and cost-effectiveness of the military services' depots. In March 2007, the Office of the Under Secretary of Defense for Acquisition, Technology and Logistics (OUSD (AT&L)) directed each service to submit a depot maintenance strategic plan and provided direction for the content of those plans. The Air Force issued two documents in response to this direction--a Strategy and a Master Plan. GAO used qualitative content analyses to determine the extent to which the Air Force's collective plan addresses (1) key elements of a results-oriented management framework and (2) OUSD's (AT&L) direction for the plan's content."
Date: May 14, 2010
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Do Heat Pump Clothes Dryers Make Sense for the U.S. Market (open access)

Do Heat Pump Clothes Dryers Make Sense for the U.S. Market

Heat pump clothes dryers (HPCDs) can be as much as 50percent more energy-efficient than conventional electric resistance clothes dryers, and therefore have the potential to save substantial amounts of electricity. While not currently available in the U.S., there are manufacturers in Europe and Japan that produce units for those markets. Drawing on analysis conducted for the U.S. Department of Energy's (DOE) current rulemaking on amended standards for clothes dryers, this paper evaluates the cost-effectiveness of HPCDs in American homes, as well as the national impact analysis for different market share scenarios. In order to get an accurate measurement of real energy savings potential, the paper offers a new energy use calculation methodology that takes into account the most current data on clothes washer cycles, clothes dryer usage frequency, remaining moisture content, and load weight per cycle, which is very different from current test procedure values. Using the above methodology along with product cost estimates developed by DOE, the paper presents the results of a life-cycle cost analysis of the adoption of HPCDs in a representative sample of American homes. The results show that HPCDs have positive economic benefits only for households with high clothes dryer usage or for households with …
Date: May 14, 2010
Creator: Meyers, Steve; Franco, Victor; Lekov, Alex; Thompson, Lisa & Sturges, Andy
Object Type: Article
System: The UNT Digital Library
Economics of Condensing Gas Furnaces and Water Heaters Potential in Residential Single Family Homes (open access)

Economics of Condensing Gas Furnaces and Water Heaters Potential in Residential Single Family Homes

Residential space and water heating accounts for over 90percent of total residential primary gas consumption in the United States. Condensing space and water heating equipment are 10-30percent more energy-efficient than conventional space and water heating. Currently, condensing gas furnaces represent 40 percent of shipments and are common in the Northern U.S. market. Meanwhile, manufacturers are planning to develop condensing gas storage water heaters to qualify for Energy Star? certification. Consumers, installers, and builders who make decisions about installing space and water heating equipment generally do not perform an analysis to assess the economic impacts of different combinations and efficiencies of space and water heating equipment. Thus, equipment is often installed without taking into consideration the potential life-cycle economic and energy savings of installing space and water heating equipment combinations. Drawing on previous and current analysis conducted for the United States Department of Energy rulemaking on amended standards for furnaces and water heaters, this paper evaluates the extent to which condensing equipment can provide life-cycle cost-effectiveness in a representative sample of single family American homes. The economic analyses indicate that significant energy savings and consumer benefits may result from large-scale introduction of condensing water heaters combined with condensing furnaces in U.S. …
Date: May 14, 2010
Creator: Lekov, Alex; Franco, Victor & Meyers, Steve
Object Type: Article
System: The UNT Digital Library
Factors Affecting the Demand for Long-Term Care Insurance: Issues for Congress (open access)

Factors Affecting the Demand for Long-Term Care Insurance: Issues for Congress

This report provides information about the issues for Congress on Factors Affecting the Demand for Long-Term Care Insurance. This report will discuss the role of LTCI in financing LTC costs and current trends in the LTCI industry.
Date: May 14, 2010
Creator: Mulvey, Janemarie
Object Type: Report
System: The UNT Digital Library
Federal Register, Volume 75, Number 93, May 14, 2010, Pages 27155-27398 (open access)

Federal Register, Volume 75, Number 93, May 14, 2010, Pages 27155-27398

Daily publication of the U.S. Office of the Federal Register contains rules and regulations, proposed legislation and rule changes, and other notices, including "Presidential proclamations and Executive Orders, Federal agency documents having general applicability and legal effect, documents required to be published by act of Congress, and other Federal agency documents of public interest" (p. ii). Table of Contents starts on page iii.
Date: May 14, 2010
Creator: United States. Office of the Federal Register.
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library
Financial Audit: Congressional Award Foundation's Fiscal Years 2009 and 2008 Financial Statements (open access)

Financial Audit: Congressional Award Foundation's Fiscal Years 2009 and 2008 Financial Statements

A letter report issued by the Government Accountability Office with an abstract that begins "This report presents our opinion on the financial statements of the Congressional Award Foundation (the Foundation) for the fiscal years ended September 30, 2009, and 2008. The financial statements are the responsibility of the Foundation. This report also presents the results of our consideration of the Foundation's related internal control. We identified a material internal control weakness in the Foundation's financial reporting process that resulted in material misstatements in the draft financial statements that management did not detect during the financial statement preparation and review process for fiscal year 2009. As described in our report, we identified errors during our audit and brought them to management's attention. In response, management made material adjustments (corrections) that are reflected in the accompanying financial statements. In addition, this report presents the results of our tests of the Foundation's compliance during fiscal year 2009 with selected provisions of laws and regulations. We conducted our audit pursuant to section 107 of the Congressional Award Act, as amended (2 U.S.C. 807), and in accordance with U.S. generally accepted government auditing standards."
Date: May 14, 2010
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Findings from Seven Years of Field Performance Data for Automated Demand Response in Commercial Buildings (open access)

Findings from Seven Years of Field Performance Data for Automated Demand Response in Commercial Buildings

California is a leader in automating demand response (DR) to promote low-cost, consistent, and predictable electric grid management tools. Over 250 commercial and industrial facilities in California participate in fully-automated programs providing over 60 MW of peak DR savings. This paper presents a summary of Open Automated DR (OpenADR) implementation by each of the investor-owned utilities in California. It provides a summary of participation, DR strategies and incentives. Commercial buildings can reduce peak demand from 5 to 15percent with an average of 13percent. Industrial facilities shed much higher loads. For buildings with multi-year savings we evaluate their load variability and shed variability. We provide a summary of control strategies deployed, along with costs to install automation. We report on how the electric DR control strategies perform over many years of events. We benchmark the peak demand of this sample of buildings against their past baselines to understand the differences in building performance over the years. This is done with peak demand intensities and load factors. The paper also describes the importance of these data in helping to understand possible techniques to reach net zero energy using peak day dynamic control capabilities in commercial buildings. We present an example in which …
Date: May 14, 2010
Creator: Kiliccote, Sila; Piette, Mary Ann; Mathieu, Johanna & Parrish, Kristen
Object Type: Article
System: The UNT Digital Library
Foreign Assistance: U.S. Assistance to the West Bank and Gaza for Fiscal Years 2008 and 2009 (open access)

Foreign Assistance: U.S. Assistance to the West Bank and Gaza for Fiscal Years 2008 and 2009

Correspondence issued by the Government Accountability Office with an abstract that begins "For decades, the United States has worked toward the resolution of the Israeli-Palestinian conflict, most recently under the 2003 Roadmap for Peace, which calls for an independent Palestinian state coexisting peacefully with the State of Israel. The United States had obligated more than $2.9 billion in bilateral assistance to the West Bank and Gaza focused on further developing the Palestinian economic, social services, and civil society sectors and on strengthening the processes, governance, and security-providing capacity of Palestinian Authority (PA) institutions from fiscal years 1993 through 2009. An additional $400.4 million is planned for fiscal year 2010. Since June 2007, when Hamas-a U.S. designated terrorist organization-seized control of the Gaza Strip, the United States has directed most of its assistance to the West Bank. The U.S. Agency for International Development (USAID) is primarily responsible for administering Economic Support Fund (ESF) appropriations. Fiscal year 2008 and 2009 ESF funds support, among other things, priority needs identified in the 2007 Palestinian Reform and Development Plan, as well as humanitarian needs in Gaza following the Israeli-Hamas conflict there from December 2008 through January 2009. For fiscal years 2008 and 2009, the …
Date: May 14, 2010
Creator: United States. Government Accountability Office.
Object Type: Text
System: The UNT Digital Library
Greece's Debt Crisis: Overview, Policy Responses, and Implications (open access)

Greece's Debt Crisis: Overview, Policy Responses, and Implications

Greece is currently facing such a sovereign debt crisis. On May 2, 2010, the Eurozone members and International Monetary Fund (IMF) endorsed a historic €110 billion (about $145 billion) financial package for Greece in an effort to avoid a Greek default and to stem contagion of Greece's crisis to other European countries, particularly Portugal, Spain, Ireland, and Italy. This report provides an overview of the crisis; outlines the major causes of the crisis, focusing on both domestic and international factors; examines how Greece, the Eurozone members, and the IMF have responded to the crisis; and highlights the broader implications of Greece's debt crisis, including for the United States.
Date: May 14, 2010
Creator: Nelson, Rebecca M.; Belkin, Paul & Mix, Derek E.
Object Type: Report
System: The UNT Digital Library
Heat Pump Water Heaters and American Homes: A Good Fit? (open access)

Heat Pump Water Heaters and American Homes: A Good Fit?

Heat pump water heaters (HPWHs) are over twice as energy-efficient as conventional electric resistance water heaters, with the potential to save substantial amounts of electricity. Drawing on analysis conducted for the U.S. Department of Energy's recently-concluded rulemaking on amended standards for water heaters, this paper evaluates key issues that will determine how well, and to what extent, this technology will fit in American homes. The key issues include: 1) equipment cost of HPWHs; 2) cooling of the indoor environment by HPWHs; 3) size and air flow requirements of HPWHs; 4) performance of HPWH under different climate conditions and varying hot water use patterns; and 5) operating cost savings under different electricity prices and hot water use. The paper presents the results of a life-cycle cost analysis of the adoption of HPWHs in a representative sample of American homes, as well as national impact analysis for different market share scenarios. Assuming equipment costs that would result from high production volume, the results show that HPWHs can be cost effective in all regions for most single family homes, especially when the water heater is not installed in a conditioned space. HPWHs are not cost effective for most manufactured home and multi-family installations, …
Date: May 14, 2010
Creator: Franco, Victor; Lekov, Alex; Meyers, Steve & Letschert, Virginie
Object Type: Article
System: The UNT Digital Library
Homelessness: Targeted Federal Programs and Recent Legislation (open access)

Homelessness: Targeted Federal Programs and Recent Legislation

This report contains information on the federal response to homelessness, including programs within different federal agencies, current issues relating to homelessness that are being considered by Congress, legislation enacted in the 111th Congress, and federal funding.
Date: May 14, 2010
Creator: Perl, Libby
Object Type: Report
System: The UNT Digital Library
International Trade: Rules of Origin (open access)

International Trade: Rules of Origin

This report deals with rules of origin (ROO) in three parts. First, we describe in more detail the reasons that country of origin rules are important and briefly describe U.S. laws and methods that provide direction in making these determinations. Second, we discuss briefly some of the more controversial issues involving rules of origin, including the apparently subjective nature of some CBP origin determinations, and the effects of the global manufacturing process on ROO. Third, we conclude with some alternatives and options that Congress could consider that might assist in simplifying the process.
Date: May 14, 2010
Creator: Jones, Vivian C. & Martin, Michael F.
Object Type: Report
System: The UNT Digital Library
The Jurisprudence of Justice John Paul Stevens: Selected Opinions on Intellectual Property Law (open access)

The Jurisprudence of Justice John Paul Stevens: Selected Opinions on Intellectual Property Law

This report briefly surveys decisions of retiring Justice John Paul Stevens in intellectual property cases. An examination of Justice Stevens' written opinions relating to intellectual property law reveals a strong desire to ensure that the rights of intellectual property creators are balanced with the rights of the public to access creative and innovative works.
Date: May 14, 2010
Creator: Yeh, Brian T.
Object Type: Report
System: The UNT Digital Library
List of Contractors to Support Anthrax Remediation (open access)

List of Contractors to Support Anthrax Remediation

This document responds to a need identified by private sector businesses for information on contractors that may be qualified to support building remediation efforts following a wide-area anthrax release.
Date: May 14, 2010
Creator: Judd, Kathleen S. & Lesperance, Ann M.
Object Type: Report
System: The UNT Digital Library
Measuring solar reflectance Part I: Defining a metric that accurately predicts solar heat gain (open access)

Measuring solar reflectance Part I: Defining a metric that accurately predicts solar heat gain

Solar reflectance can vary with the spectral and angular distributions of incident sunlight, which in turn depend on surface orientation, solar position and atmospheric conditions. A widely used solar reflectance metric based on the ASTM Standard E891 beam-normal solar spectral irradiance underestimates the solar heat gain of a spectrally selective 'cool colored' surface because this irradiance contains a greater fraction of near-infrared light than typically found in ordinary (unconcentrated) global sunlight. At mainland U.S. latitudes, this metric RE891BN can underestimate the annual peak solar heat gain of a typical roof or pavement (slope {le} 5:12 [23{sup o}]) by as much as 89 W m{sup -2}, and underestimate its peak surface temperature by up to 5 K. Using R{sub E891BN} to characterize roofs in a building energy simulation can exaggerate the economic value N of annual cool-roof net energy savings by as much as 23%. We define clear-sky air mass one global horizontal ('AM1GH') solar reflectance R{sub g,0}, a simple and easily measured property that more accurately predicts solar heat gain. R{sub g,0} predicts the annual peak solar heat gain of a roof or pavement to within 2 W m{sup -2}, and overestimates N by no more than 3%. R{sub g,0} …
Date: May 14, 2010
Creator: Levinson, Ronnen; Akbari, Hashem & Berdahl, Paul
Object Type: Article
System: The UNT Digital Library
Measuring solar reflectance Part II: Review of practical methods (open access)

Measuring solar reflectance Part II: Review of practical methods

A companion article explored how solar reflectance varies with surface orientation and solar position, and found that clear sky air mass 1 global horizontal (AM1GH) solar reflectance is a preferred quantity for estimating solar heat gain. In this study we show that AM1GH solar reflectance R{sub g,0} can be accurately measured with a pyranometer, a solar spectrophotometer, or an updated edition of the Solar Spectrum Reflectometer (version 6). Of primary concern are errors that result from variations in the spectral and angular distributions of incident sunlight. Neglecting shadow, background and instrument errors, the conventional pyranometer technique can measure R{sub g,0} to within 0.01 for surface slopes up to 5:12 [23{sup o}], and to within 0.02 for surface slopes up to 12:12 [45{sup o}]. An alternative pyranometer method minimizes shadow errors and can be used to measure R{sub g,0} of a surface as small as 1 m in diameter. The accuracy with which it can measure R{sub g,0} is otherwise comparable to that of the conventional pyranometer technique. A solar spectrophotometer can be used to determine R*{sub g,0}, a solar reflectance computed by averaging solar spectral reflectance weighted with AM1GH solar spectral irradiance. Neglecting instrument errors, R*{sub g,0} matches R{sub g,0} …
Date: May 14, 2010
Creator: Levinson, Ronnen; Akbari, Hashem & Berdahl, Paul
Object Type: Article
System: The UNT Digital Library
Quantitative Analysis of the Principal-Agent Problem in Commercial Buildings in the U.S.: Focus on Central Space Heating and Cooling (open access)

Quantitative Analysis of the Principal-Agent Problem in Commercial Buildings in the U.S.: Focus on Central Space Heating and Cooling

We investigate the existence of the principal-agent (PA) problem in non-government, non-mall commercial buildings in the U.S. in 2003. The analysis concentrates on space heating and cooling energy consumed by centrally installed equipment in order to verify whether a market failure caused by the PA problem might have prevented the installation of energy-efficient devices in non-owner-occupied buildings (efficiency problem) and/or the efficient operation of space-conditioning equipment in these buildings (usage problem). Commercial Buildings Energy Consumption Survey (CBECS) 2003 data for single-owner, single-tenant and multi-tenant occupied buildings were used for conducting this evaluation. These are the building subsets with the appropriate conditions for assessing both the efficiency and the usage problems. Together, these three building types represent 51.9percent of the total floor space of all buildings with space heating and 59.4percent of the total end-use energy consumption of such buildings; similarly, for space cooling, they represent 52.7percent of floor space and 51.6percent of energy consumption. Our statistical analysis shows that there is a usage PA problem. In space heating it applies only to buildings with a small floor area (&lt;_50,000 sq. ft.). We estimate that in 2003 it accounts for additional site energy consumption of 12.3 (+ 10.5 ) TBtu (primary …
Date: May 14, 2010
Creator: Blum, Helcio & Sathaye, Jayant
Object Type: Report
System: The UNT Digital Library
Scenario Analysis of Peak Demand Savings for Commercial Buildings with Thermal Mass in California (open access)

Scenario Analysis of Peak Demand Savings for Commercial Buildings with Thermal Mass in California

This paper reports on the potential impact of demand response (DR) strategies in commercial buildings in California based on the Demand Response Quick Assessment Tool (DRQAT), which uses EnergyPlus simulation prototypes for office and retail buildings. The study describes the potential impact of building size, thermal mass, climate, and DR strategies on demand savings in commercial buildings. Sensitivity analyses are performed to evaluate how these factors influence the demand shift and shed during the peak period. The whole-building peak demand of a commercial building with high thermal mass in a hot climate zone can be reduced by 30percent using an optimized demand response strategy. Results are summarized for various simulation scenarios designed to help owners and managers understand the potential savings for demand response deployment. Simulated demand savings under various scenarios were compared to field-measured data in numerous climate zones, allowing calibration of the prototype models. The simulation results are compared to the peak demand data from the Commercial End-Use Survey for commercial buildings in California. On the economic side, a set of electricity rates are used to evaluate the impact of the DR strategies on economic savings for different thermal mass and climate conditions. Our comparison of recent simulation …
Date: May 14, 2010
Creator: Yin, Rongxin; Kiliccote, Sila; Piette, Mary Ann & Parrish, Kristen
Object Type: Article
System: The UNT Digital Library
Solar access of residential rooftops in four California cities (open access)

Solar access of residential rooftops in four California cities

Shadows cast by trees and buildings can limit the solar access of rooftop solar-energy systems, including photovoltaic panels and thermal collectors. This study characterizes residential rooftop shading in Sacramento, San Jose, Los Angeles and San Diego, CA. Our analysis can be used to better estimate power production and/or thermal collection by rooftop solar-energy equipment. It can also be considered when designing programs to plant shade trees. High-resolution orthophotos and LiDAR (Light Detection And Ranging) measurements of surface height were used to create a digital elevation model of all trees and buildings in a well-treed 2.5-4 km{sup 2} residential neighborhood. On-hour shading of roofing planes (the flat elements of roofs) was computed geometrically from the digital elevation model. Values in future years were determined by repeating these calculations after simulating tree growth. Parcel boundaries were used to determine the extent to which roofing planes were shaded by trees and buildings in neighboring parcels. For the subset of S+SW+W-facing planes on which solar equipment is commonly installed for maximum solar access, absolute light loss in spring, summer and fall peaked about two to four hours after sunrise and about two to four hours before sunset. The fraction of annual insolation lost to …
Date: May 14, 2010
Creator: Levinson, Ronnen; Akbari, Hashem & Pomerantz, Melvin
Object Type: Article
System: The UNT Digital Library