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Evaluating Progress on TARP Foreclosure Mitigation Problems

Description: April report of the U.S. Congressional Oversight Panel describing their activities and findings regarding the state of the U.S. Treasury's mitigation programs in addition to an overview of the economy and housing markets.
Date: April 14, 2010
Creator: United States. Congressional Oversight Panel.
Partner: UNT Libraries Government Documents Department
open access

Eliminating Electricity Deficit through Energy Efficiency in India: An Evaluation of Aggregate Economic and Carbon Benefits

Description: Electricity demand has consistently exceeded available supply in India. While the electricity deficit varies across states, nationally it was estimated to be of the order of 12percent on peak and 11percent for electricity during 2008-09. This paper explores a demand-side focused potential for energy efficiency improvement to eliminate the electricity deficit compared to a business as usual (BAU) supply-side focused scenario. The limited availability of finance and other legal and administrative… more
Date: April 30, 2010
Creator: Sathaye, Jayant & Gupta, Arjun
Partner: UNT Libraries Government Documents Department
open access

Assessment of simulation predictions of hydrocarbon pool fire tests.

Description: An uncertainty quantification (UQ) analysis is performed on the fuel regression rate model within SIERRA/Fuego by comparing to a series of hydrocarbon tests performed in the Thermal Test Complex. The fuels used for comparison for the fuel regression rate model include methanol, ethanol, JP8, and heptane. The recently implemented flamelet combustion model is also assessed with a limited comparison to data involving measurements of temperature and relative mole fractions within a 2-m diameter met… more
Date: April 1, 2010
Creator: Luketa-Hanlin, Anay Josephine
Partner: UNT Libraries Government Documents Department
open access

High-Precision Computation: Mathematical Physics and Dynamics

Description: At the present time, IEEE 64-bit oating-point arithmetic is suficiently accurate for most scientic applications. However, for a rapidly growing body of important scientic computing applications, a higher level of numeric precision is required. Such calculations are facilitated by high-precision software packages that include high-level language translation modules to minimize the conversion e ort. This pa- per presents a survey of recent applications of these techniques and provides someanalysi… more
Date: April 1, 2010
Creator: Bailey, D. H.; Barrio, R. & Borwein, J. M.
Partner: UNT Libraries Government Documents Department
open access

Compressive behavior of fine sand.

Description: The compressive mechanical response of fine sand is experimentally investigated. The strain rate, initial density, stress state, and moisture level are systematically varied. A Kolsky bar was modified to obtain uniaxial and triaxial compressive response at high strain rates. A controlled loading pulse allows the specimen to acquire stress equilibrium and constant strain-rates. The results show that the compressive response of the fine sand is not sensitive to strain rate under the loading condi… more
Date: April 1, 2010
Creator: Martin, Bradley E. (Air Force Research Laboratory, Eglin, FL); Kabir, Md. E. (Purdue University, West Lafayette, IN); Song, Bo & Chen, Wayne (Purdue University, West Lafayette, IN)
Partner: UNT Libraries Government Documents Department
open access

Alternative Neutron Detection Testing Summary

Description: Radiation portal monitors used for interdiction of illicit materials at borders include highly sensitive neutron detection systems. The main reason for having neutron detection capability is to detect fission neutrons from plutonium. Most currently deployed radiation portal monitors (RPMs) use neutron detectors based upon 3He-filled gas proportional counters, which are the most common large area neutron detector. This type of neutron detector is used in the TSA and other RPMs installed in inter… more
Date: April 8, 2010
Creator: Kouzes, Richard T.; Ely, James H.; Erikson, Luke E.; Kernan, Warnick J.; Lintereur, Azaree T.; Siciliano, Edward R. et al.
Partner: UNT Libraries Government Documents Department
open access

Centroid and Envelope Dynamics of High-intensity Charged Particle Beams in an External Focusing Lattice and Oscillating Wobbler

Description: The centroid and envelope dynamics of a high-intensity charged particle beam are investigated as a beam smoothing technique to achieve uniform illumination over a suitably chosen region of the target for applications to ion-beam-driven high energy density physics and heavy ion fusion. The motion of the beam centroid projected onto the target follows a smooth pattern to achieve the desired illumination, for improved stability properties during the beam-target interaction. The centroid dynamics i… more
Date: April 28, 2010
Creator: Qin, Hong; Davidson, Ronald C. & Logan, B. Grant
Partner: UNT Libraries Government Documents Department
open access

Science & Technology Review June 2010

Description: This month's issue has the following articles: (1) A Leader in High-Pressure Science--Commentary by William H. Goldstein; (2) Diamonds Put the Pressure on Materials--New experimental capabilities are helping Livermore scientists better understand how extreme pressure affects a material's structure; (3) Exploring the Unusual Behavior of Granular Materials--Livermore scientists are developing new techniques for predicting the response of granular materials under pressure; (4) A 1-Ton Device in a … more
Date: April 28, 2010
Creator: Blobaum, K. J.
Partner: UNT Libraries Government Documents Department
open access

HEP Science Network Requirements

Description: The Energy Sciences Network (ESnet) is the primary provider of network connectivity for the US Department of Energy Office of Science, the single largest supporter of basic research in the physical sciences in the United States. In support of the Office of Science programs, ESnet regularly updates and refreshes its understanding of the networking requirements of the instruments, facilities, scientists, and science programs that it serves. This focus has helped ESnet to be a highly successful en… more
Date: April 27, 2010
Creator: Bakken, Jon; Barczyk, Artur; Blatecky, Alan; Boehnlein, Amber; Carlson, Rich; Chekanov, Sergei et al.
Partner: UNT Libraries Government Documents Department
open access

MELCOR 1.8.5 modeling aspects of fission product release, transport and deposition an assessment with recommendations.

Description: The Phebus and VERCORS data have played an important role in contemporary understanding and modeling of fission product release and transport from damaged light water reactor fuel. The data from these test programs have allowed improvement of MELCOR modeling of release and transport processes for both low enrichment uranium fuel as well as high burnup and mixed oxide (MOX) fuels. This paper discusses the synthesis of these findings in the MELCOR severe accident code. Based on recent assessments… more
Date: April 1, 2010
Creator: Gauntt, Randall O.
Partner: UNT Libraries Government Documents Department
open access

Assessment of severe accident source terms in pressurized-water reactors with a 40% mixed-oxide and 60% low-enriched uranium core using MELCOR 1.8.5.

Description: As part of a Nuclear Regulatory Commission (NRC) research program to evaluate the impact of using mixed-oxide (MOX) fuel in commercial nuclear power plants, a study was undertaken to evaluate the impact of the usage of MOX fuel on the consequences of postulated severe accidents. A series of 23 severe accident calculations was performed using MELCOR 1.8.5 for a four-loop Westinghouse reactor with an ice condenser containment. The calculations covered five basic accident classes that were identif… more
Date: April 1, 2010
Creator: Gauntt, Randall O.; Goldmann, Andrew S. (Texas A&M University, College Station, TX); Wagner, Kenneth C.; Powers, Dana Auburn; Ashbaugh, Scott G. & Longmire, Pamela
Partner: UNT Libraries Government Documents Department
open access

Recommended Changes to Specifications for Demand Controlled Ventilation in California's Title 24 Building Energy Efficiency Standards

Description: In demand-controlled ventilation (DCV), rates of outdoor air ventilation are automatically modulated as occupant density varies. The objective is to keep ventilation rates at or above design specifications and code requirements and also to save energy by avoiding excessive ventilation rates. DCV is most often used in spaces with highly variable and sometime dense occupancy. In almost all cases, carbon dioxide (CO{sub 2}) sensors installed in buildings provide the signal to the ventilation rate … more
Date: April 8, 2010
Creator: Fisk, William J.; Sullivan, Douglas P. & Faulkner, David
Partner: UNT Libraries Government Documents Department
open access

Electromagnetic coupling between transmitters and electro-explosive devices located within an enclosure.

Description: This report documents calculations conducted to determine if 42 low-power transmitters located within a metallic enclosure can initiate electro-explosive devices (EED) located within the same enclosure. This analysis was performed for a generic EED no-fire power level of 250 mW. The calculations show that if the transmitters are incoherent, the power available is 32 mW - approximately one-eighth of the assumed level even with several worst-case assumptions in place.
Date: April 1, 2010
Creator: Warne, Larry Kevin; Jorgenson, Roy Eberhardt & Coats, Rebecca Sue
Partner: UNT Libraries Government Documents Department
open access

Geomechanical analyses to investigate wellbore/mine interactions in the Potash Enclave of Southeastern New Mexico.

Description: Geomechanical analyses have been performed to investigate potential mine interactions with wellbores that could occur in the Potash Enclave of Southeastern New Mexico. Two basic models were used in the study; (1) a global model that simulates the mechanics associated with mining and subsidence and (2) a wellbore model that examines the resulting interaction impacts on the wellbore casing. The first model is a 2D approximation of a potash mine using a plane strain idealization for mine depths of… more
Date: April 1, 2010
Creator: Ehgartner, Brian L.; Bean, James E. (Sandia Staffing Alliance, LLC, Albuquerque, NM); Arguello, Jose Guadalupe, Jr. & Stone, Charles Michael
Partner: UNT Libraries Government Documents Department
open access

Absolute calibration method for fast-streaked, fiber optic light collection, spectroscopy systems.

Description: This report outlines a convenient method to calibrate fast (<1ns resolution) streaked, fiber optic light collection, spectroscopy systems. Such a system is used to collect spectral data on plasmas generated in the A-K gap of electron beam diodes fielded on the RITS-6 accelerator (8-12MV, 140-200kA). On RITS, light is collected through a small diameter (200 micron) optical fiber and recorded on a fast streak camera at the output of 1 meter Czerny-Turner monochromator (F/7 optics). To calibrat… more
Date: April 1, 2010
Creator: Johnston, Mark D.; Frogget, Brent; Oliver, Bryan Velten; Maron, Yitzhak; Droemer, Darryl W. & Crain, Marlon D.
Partner: UNT Libraries Government Documents Department
open access

Accident source terms for pressurized water reactors with high-burnup cores calculated using MELCOR 1.8.5.

Description: In this study, risk-significant pressurized-water reactor severe accident sequences are examined using MELCOR 1.8.5 to explore the range of fission product releases to the reactor containment building. Advances in the understanding of fission product release and transport behavior and severe accident progression are used to render best estimate analyses of selected accident sequences. Particular emphasis is placed on estimating the effects of high fuel burnup in contrast with low burnup on fiss… more
Date: April 1, 2010
Creator: Gauntt, Randall O.; Powers, Dana Auburn; Ashbaugh, Scott G.; Leonard, Mark Thomas & Longmire, Pamela
Partner: UNT Libraries Government Documents Department
open access

SAPLE: Sandia Advanced Personnel Locator Engine.

Description: We present the Sandia Advanced Personnel Locator Engine (SAPLE) web application, a directory search application for use by Sandia National Laboratories personnel. SAPLE's purpose is to return Sandia personnel 'results' as a function of user search queries, with its mission to make it easier and faster to find people at Sandia. To accomplish this, SAPLE breaks from more traditional directory application approaches by aiming to return the correct set of results while placing minimal constraints o… more
Date: April 1, 2010
Creator: Procopio, Michael J.
Partner: UNT Libraries Government Documents Department
open access

Final Report for LDRD Project 02-FS-009 Gigapixel Surveillance Camera

Description: The threats of terrorism and proliferation of weapons of mass destruction add urgency to the development of new techniques for surveillance and intelligence collection. For example, the United States faces a serious and growing threat from adversaries who locate key facilities underground, hide them within other facilities, or otherwise conceal their location and function. Reconnaissance photographs are one of the most important tools for uncovering the capabilities of adversaries. However, cur… more
Date: April 20, 2010
Creator: Marrs, R E & Bennett, C L
Partner: UNT Libraries Government Documents Department
open access

Signature molecular descriptor : advanced applications.

Description: In this work we report on the development of the Signature Molecular Descriptor (or Signature) for use in the solution of inverse design problems as well as in highthroughput screening applications. The ultimate goal of using Signature is to identify novel and non-intuitive chemical structures with optimal predicted properties for a given application. We demonstrate this in three studies: green solvent design, glucocorticoid receptor ligand design and the design of inhibitors for Factor XIa. In… more
Date: April 1, 2010
Creator: Visco, Donald Patrick, Jr.
Partner: UNT Libraries Government Documents Department
open access

Comparison of Poloidal Velocity Meassurements to Neoclassical Theory on the National Spherical Torus Experiment

Description: Knowledge of poloidal velocity is necessary for the determination of the radial electric field, Er, which along with its gradient is linked to turbulence suppression and transport barrier formation. Recent measurements of poloidal flow on conventional tokamaks have been reported to be an order of magnitude larger than expected from neoclassical theory. In contrast, recent poloidal velocity measurements on the NSTX spherical torus [S. M. Kaye et al., Phys. Plasmas 8, 1977 (2001)] are near or bel… more
Date: April 7, 2010
Creator: Bell, R. E.; Kaye, S. M.; Kolesnikov, R. A.; LeBlance, B. P.; Rewolldt, G. & Wang, W. X.
Partner: UNT Libraries Government Documents Department
open access

Radionuclide inventories : ORIGEN2.2 isotopic depletion calculation for high burnup low-enriched uranium and weapons-grade mixed-oxide pressurized-water reactor fuel assemblies.

Description: The Oak Ridge National Laboratory computer code, ORIGEN2.2 (CCC-371, 2002), was used to obtain the elemental composition of irradiated low-enriched uranium (LEU)/mixed-oxide (MOX) pressurized-water reactor fuel assemblies. Described in this report are the input parameters for the ORIGEN2.2 calculations. The rationale for performing the ORIGEN2.2 calculation was to generate inventories to be used to populate MELCOR radionuclide classes. Therefore the ORIGEN2.2 output was subsequently manipulated… more
Date: April 1, 2010
Creator: Gauntt, Randall O.; Ross, Kyle W. (Los Alamos National Laboratory, Los Alamos, NM); Smith, James Dean & Longmire, Pamela
Partner: UNT Libraries Government Documents Department
open access

Performance characterization of a hydrogen catalytic heater.

Description: This report describes the performance of a high efficiency, compact heater that uses the catalytic oxidation of hydrogen to provide heat to the GM Hydrogen Storage Demonstration System. The heater was designed to transfer up to 30 kW of heat from the catalytic reaction to a circulating heat transfer fluid. The fluid then transfers the heat to one or more of the four hydrogen storage modules that make up the Demonstration System to drive off the chemically bound hydrogen. The heater consists of … more
Date: April 1, 2010
Creator: Johnson, Terry Alan & Kanouff, Michael P.
Partner: UNT Libraries Government Documents Department
open access

Energy Storage for Power Systems Applications: A Regional Assessment for the Northwest Power Pool (NWPP)

Description: Wind production, which has expanded rapidly in recent years, could be an important element in the future efficient management of the electric power system; however, wind energy generation is uncontrollable and intermittent in nature. Thus, while wind power represents a significant opportunity to the Bonneville Power Administration (BPA), integrating high levels of wind resources into the power system will bring great challenges to generation scheduling and in the provision of ancillary services… more
Date: April 1, 2010
Creator: Kintner-Meyer, Michael CW; Balducci, Patrick J.; Jin, Chunlian; Nguyen, Tony B.; Elizondo, Marcelo A.; Viswanathan, Vilayanur V. et al.
Partner: UNT Libraries Government Documents Department
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