The Savannah River National Laboratory has developed a 'hybrid' approach to Performance Assessment modeling which has been used for a number of Performance Assessments. This hybrid approach uses a multi-dimensional modeling platform (PorFlow) to develop deterministic flow fields and perform contaminant transport. The GoldSim modeling platform is used to develop the Sensitivity and Uncertainty analyses. Because these codes are performing complementary tasks, it is incumbent upon them that for the deterministic cases they produce very similar results. This paper discusses two very different waste forms, one with no engineered barriers and one with engineered barriers, each of which present different challenges to the abstraction of data. The hybrid approach to Performance Assessment modeling used at the SRNL uses a 2-D unsaturated zone (UZ) and a 3-D saturated zone (SZ) model in the PorFlow modeling platform. The UZ model consists of the waste zone and the unsaturated zoned between the waste zone and the water table. The SZ model consists of source cells beneath the waste form to the points of interest. Both models contain 'buffer' cells so that modeling domain boundaries do not adversely affect the calculation. The information pipeline between the two models is the contaminant flux. The domain …

Specific activation recipes for bulk, 100 nm thick MBE grown and high polarization III-V photocathode material have been developed which mitigate the effects of exposure to background gasses. Lifetime data using four representative gasses were acquired for bulk GaAs, 100 nm unstrained GaAs and strained superlattice GaAs/GaAsP, all activated both with Cs and then Cs and Li (bi-alkali). Each photoemitter showed marked resilience improvement when activated using the bi-alkali recipe compared to the standard single alkali recipe. A dual alkali activation system at SLAC was constructed, baked and commissioned with the purpose of performing spin-polarization measurements on electrons emitted from the bi-alkali activated surfaces. An end station at SSRL was configured with the required sources for energy resolved photoemission measurements on the bi-alkali activated and CO2 dosed surfaces. The bi-alkali recipes were successfully implemented at SLAC/SSRL. Measurements at SLAC of the photoelectron spin-polarization from the modified activation surface showed no sign of a change in value compared to the standard activated material, i.e., no ill effects. Analysis of photoemission data indicates that the addition of Li to the activation layer results in a multi-layer structure. The presence of Li in the activation layer also acts as an inhibitor to CO2 …

This project is concerned with the PF.WRF model as a means to enable more accurate predictions of wind fluctuations and subsurface storage. As developed at LLNL, PF.WRF couples a groundwater (subsurface) and surface water flow model (ParFlow) to a mesoscale atmospheric model (WRF, Weather Research and Forecasting Model). It was developed as a unique tool to address coupled water balance and wind energy questions that occur across traditionally separated research regimes of the atmosphere, land surface, and subsurface. PF.WRF is capable of simulating fluid, mass, and energy transport processes in groundwater, vadose zone, root zone, and land surface systems, including overland flow, and allows for the WRF model to both directly drive and respond to surface and subsurface hydrologic processes and conditions. The current PF.WRF model is constrained to have uniform spatial gridding below the land surface and matching areal grids with the WRF model at the land surface. There are often cases where it is advantageous for land surface, overland flow and subsurface models to have finer gridding than their atmospheric counterparts. Finer vertical discretization is also advantageous near the land surface (to properly capture feedbacks) yet many applications have a large vertical extent. However, the surface flow is …

In recent years, analysts and U.S. policymakers have noted Africa's growing strategic importance to U.S. interests. On February 6, 2007, the Bush Administration announced the creation of a new unified combatant command, U.S. Africa Command or AFRICOM, to promote U.S. national security objectives in Africa and its surrounding waters. This report provides information on AFRICOM's mission, structure, interagency coordination, and its basing and manpower requirements. The report also gives a broad overview of U.S. strategic interests in Africa and the role of U.S. military efforts on the continent as they pertain to the creation of Africa Command.

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Congressional interest in facilitating U.S. technological innovation led to the passage of P.L. 96-517, Amendments to the Patent and Trademark Act, commonly referred to as the "Bayh-Dole Act" after its two main sponsors former Senators Robert Dole and Birch Bayh. Under this 1980 law, as amended, title to inventions made with government support is provided to the contractor if that contractor is a small business, a university, or other non-profit institution. This report discusses the rationale behind the passage of P.L. 96-517, its provisions, and implementation of the law.

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A number of the Commercial Building Partnership Projects (CBPs) will require metering, monitoring, data analysis and verification of savings after the retrofits are complete. Although monitoring and verification (M&V) agents are free to use any metering and monitoring devices that they chose, the data they collect should be reported to Pacific Northwest National Laboratory (PNNL) in a standard format. PNNL will store the data collected in its CBP database for further use by PNNL and U.S. Department of Energy. This document describes the data storage process and the deliver format of the data from the M&V agents.

This report discusses the Comprehensive Nuclear-Test-Ban Treaty (CTBT), which bans all nuclear explosion and was in 1996 adopted by the U.N. General Assembly but rejected by the U.S. Senate in 1997. This report discusses the Obama Administration's stated goal of pursuing U.S. ratification of the CTBT, although the Administration has mainly focused on securing Senate consent to ratification of the New Strategic Arms Reduction Treaty (New START). This report also discusses other nuclear weapons-related issues as well as the long history of nuclear testing.

Excavation and operation of an underground facility is likely to produce an extensive suite of seismic signals observable at the surface for perhaps several km. Probably a large fraction of such signals will be correlated, so the design of a monitoring framework should include consideration of a correlation processing capability. Correlation detectors have been shown to be significantly more sensitive than beam-forming power detectors. Although correlation detectors have a limited detection footprint, they can be generalized into multi-rank subspace detectors which are sensitive over a much larger range of source mechanisms and positions. Production of subspace detectors can be automated, so their use in an autonomous framework may be contemplated. Waveform correlation also can be used to produce very high precision phase picks which may be jointly inverted to simultaneously relocate groups of events. The relative precision of the resulting hypocenters is sufficient to visualize structural detail at a scale of less than a few tens of meters. Three possible correlation processor systems are presented. All use a subspace signal detection framework. The simplest system uses a single-component sensor and is capable of detection and classification of signals. The most complicated system uses many sensors deployed around the facility, and …

A letter report issued by the Government Accountability Office with an abstract that begins "The Navy's four public shipyards--Norfolk Naval Shipyard, Pearl Harbor Naval Shipyard, Portsmouth Naval Shipyard, and Puget Sound Naval Shipyard--are critical in maintaining fleet readiness and supporting ongoing operations worldwide. The Navy requests funds for the shipyards' restoration and modernization as infrastructure condition may affect their mission and workforce. GAO was asked to review (1) the extent to which the shipyards have plans for their restoration and modernization needs; (2) the extent to which the Navy has a process to capture and calculate these needs; (3) the Navy's process to prioritize and fund projects to meet these needs; and (4) the extent to which the shipyards resolve infrastructure-related safety, health, and quality-of-life issues. GAO assessed the Navy's shipyard plans against elements of a federal strategic planning framework; evaluated its process for determining its restoration and modernization needs and addressing safety, health, and quality-of-life issues; visited the shipyards; and interviewed Navy command and shipyard officials."

An important diagnostic tool for inertial confinement fusion will be time-resolved radiographic imaging of the dense cold fuel surrounding the hot spot. The measurement technique is based on point-projection radiography at photon energies from 60-200 keV where the Compton effect is the dominant contributor to the opacity of the fuel or pusher. We have successfully applied this novel Compton Radiography technique to the study of the final compression of directly driven plastic capsules at the OMEGA facility. The radiographs have a spatial and temporal resolution of {approx}10 {micro}m and {approx}10ps, respectively. A statistical accuracy of {approx}0.5% in transmission per resolution element is achieved, allowing localized measurements of areal mass densities to 7% accuracy. The experimental results show 3D non-uniformities and lower than 1D expected areal densities attributed to drive asymmetries and hydroinstabilities.

Recital presented at the UNT College of Music Recital Hall in partial fulfillment of the Doctor of Musical Arts (DMA) degree.

Recital presented at the UNT College of Music Recital Hall in partial fulfillment of the Doctor of Musical Arts (DMA) degree.

Testimony issued by the Government Accountability Office with an abstract that begins "In light of longstanding problems with delays and backlogs, Congress mandated personnel security clearance reforms through the Intelligence Reform and Terrorism Prevention Act of 2004 (IRTPA), which requires, among other things, that executive agencies meet objectives for the timeliness of the investigative and adjudicative phases of the security clearance process. Since 2005, the Department of Defense's (DOD) clearance program has been on GAO's high-risk list due to timeliness delays and GAO continued that designation in 2007 and 2009 also due to concerns about quality. Based on prior and ongoing work, this statement addresses DOD's progress in (1) reducing the timeliness of initial personnel security clearances at DOD and (2) building quality into the processes used to investigate and adjudicate security clearances. GAO reviewed Performance Accountability Council timeliness data and has begun a preliminary analysis of available DOD data, examined key clearance reform documents, and conducted interviews with DOD and the Performance Accountability Council officials about timeliness and efforts to improve the quality of investigations and adjudications. GAO plans to continue examining the timeliness and quality of personnel security clearances in DOD. This work will help inform the Comptroller …

Training conducted as a part of the United Negro College Fund Special Programs/National Library of Medicine -HBCU ACCESS Project at Howard University, Washington, DC on November 20, 2010.

Choir concert presented at the UNT College of Music Winspear Performance Hall.

Percussion ensemble concert presented at the UNT College of Music Voertman Hall.

November report of the U.S. Congressional Oversight Panel describing their activities and findings regarding mortgage document irregularities, including sections on background information, legal consequences, litigation, and the impact on banks and the housing market.

Correspondence issued by the Government Accountability Office with an abstract that begins "Each year, billions of dollars in arms and "dual-use" items--items that have both commercial and military applications--are exported to U.S. allies and strategic partners. To further national security, foreign policy, and economic interests, the U.S. government controls the export of these items. Over the past 10 years, we have reported on numerous weaknesses in the export control system, including poor coordination among the multiple agencies involved, which have led to jurisdictional disputes and enforcement challenges, and the lack of systematic assessment of the overall effectiveness of the export control system. As a result, since 2007 the arms and dual-use export control systems have been included as part of our high-risk area on ensuring the effective protection of technologies critical to U.S. national security interests. We have also called for a strategic reexamination of existing programs within the U.S. export control system to identify needed changes and ensure the advancement of U.S. interests. In August 2009, the President announced that he had directed a comprehensive review of the U.S. export control system and, in April 2010, proposed a framework under which the current system would be streamlined to include …

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Precision neutron-induced reaction data are important for modeling the network of isotope production and destruction within a given diagnostic chain. This network modeling has many applications such as the design of advanced fuel cycle for reactors and the interpretation of radiochemical data related to the stockpile stewardship and nuclear forensics projects. Our current funded effort is to improve the neutron-induced reaction data on the short-lived actinides and the specific goal is to improve the neutron capture data on {sup 238}Pu with a half-life of 87.7 years. In this report, the fabrication of a {sup 238}Pu target for the proposed measurement using the DANCE array at LANL is described. The {sup 238}Pu target was fabricated from a sample enriched to 99.35%, acquired from ORNL. A total of 395 {micro}g was electroplated onto both sides of a 3 {micro}m thick Ti foil using a custom-made plating cell, shown in Fig 1. The target-material loaded Ti foil is sandwiched between two double-side aluminized mylar foils with a thickness of 1.4 {micro}m. The mylar foil is glued to a polyimide ring. This arrangement is shown partially in Fig. 2. The assembled target is then inserted into an aluminum container with a wall thickness of …

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.

This report discusses whether the current food safety system has the resources, authority, and structural organization to safeguard the health of American consumers, who spend more than $1 trillion on food each year. Also at issue is whether federal food safety laws, first enacted in the early 1900s, have kept pace with the significant changes that have occurred in the food production, processing, and marketing sectors since then.