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Suspension and Debarment: DOD Has Active Referral Processes, but Action Needed to Promote Transparency (open access)

Suspension and Debarment: DOD Has Active Referral Processes, but Action Needed to Promote Transparency

A letter report issued by the Government Accountability Office with an abstract that begins "The four Department of Defense (DOD) components GAO examined have active processes for referring identified cases of contractor misconduct for appropriate action, including suspension or debarment. The components identify numerous cases of actual or alleged contractor misconduct each year from various internal and external sources. The figure below shows the process for identifying and referring cases to the suspension and debarment official for consideration."
Date: September 19, 2012
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Next Generation Enterprise Network: Navy Implementing Revised Approach, but Improvement Needed in Mitigating Risks (open access)

Next Generation Enterprise Network: Navy Implementing Revised Approach, but Improvement Needed in Mitigating Risks

A letter report issued by the Government Accountability Office with an abstract that begins "While the Department of the Navy (DON) has revised its acquisition approach for its new network system, the Next Generation Enterprise Network (NGEN), it still has not shown that it has selected the most cost-effective approach for acquiring NGEN capabilities. Cost effectiveness is shown by comparing life-cycle costs and quantifiable and nonquantifiable benefits among alternatives, which can be accomplished by conducting a thorough analysis of alternatives. GAO previously identified weaknesses with the NGEN analysis of alternatives related to cost estimates and analysis of operational effectiveness and made associated recommendations. However, DON did not revisit the analysis of alternatives to address the weaknesses previously identified, nor did it conduct any other analysis that would show whether its revised approach is the most cost effective. For example, while DON developed a draft economic analysis in February 2012, the analysis assessed only the status quo and revised approach, and not other alternatives. As a result, GAO remains concerned with the analysis measuring NGEN cost effectiveness and DON does not know whether its revised approach for acquiring NGEN is the most cost effective."
Date: September 19, 2012
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
National Security and Emergency Preparedness Communications: A Summary of Executive Order 13618 (open access)

National Security and Emergency Preparedness Communications: A Summary of Executive Order 13618

None
Date: September 19, 2012
Creator: unknown
System: The UNT Digital Library
Central Asia: Regional Developments and Implications for U.S. Interests (open access)

Central Asia: Regional Developments and Implications for U.S. Interests

This report briefly describes the developments and implications for U.S. interests in Central Asia.
Date: September 19, 2012
Creator: Nichol, Jim
System: The UNT Digital Library
Energy Saving Melting and Revert Reduction Technology: Aging of Graphitic Cast Irons and Machinability (open access)

Energy Saving Melting and Revert Reduction Technology: Aging of Graphitic Cast Irons and Machinability

The objective of this task was to determine whether ductile iron and compacted graphite iron exhibit age strengthening to a statistically significant extent. Further, this effort identified the mechanism by which gray iron age strengthens and the mechanism by which age-strengthening improves the machinability of gray cast iron. These results were then used to determine whether age strengthening improves the machinability of ductile iron and compacted graphite iron alloys in order to develop a predictive model of alloy factor effects on age strengthening. The results of this work will lead to reduced section sizes, and corresponding weight and energy savings. Improved machinability will reduce scrap and enhance casting marketability. Technical Conclusions: • Age strengthening was demonstrated to occur in gray iron ductile iron and compacted graphite iron. • Machinability was demonstrated to be improved by age strengthening when free ferrite was present in the microstructure, but not in a fully pearlitic microstructure. • Age strengthening only occurs when there is residual nitrogen in solid solution in the Ferrite, whether the ferrite is free ferrite or the ferrite lamellae within pearlite. • Age strengthening can be accelerated by Mn at about 0.5% in excess of the Mn/S balance Estimated energy savings …
Date: September 19, 2012
Creator: Richards, Von L.
System: The UNT Digital Library
Summary of operations and performance of the Utica aquifer and North Lake Basin Wetlands restoration project in December 2010-November 2011. (open access)
High-Power Microwave Switch Employing Electron Beam Triggering (open access)

High-Power Microwave Switch Employing Electron Beam Triggering

A high-power active microwave pulse compressor is described that modulates the quality factor Q of the energy storage cavity by a new means involving mode conversion controlled by a triggered electron-beam discharge through a switch cavity. The electron beam is emitted from a diamond-coated molybdenum cathode. This report describes the principle of operation, the design of the switch, the configuration used for the test, and the experimental results. The pulse compressor produced output pulses with 140 - “165 MW peak power, power gain of 16 - 20, and pulse duration of 16 - 20 ns at a frequency of 11.43 GHz.
Date: September 19, 2012
Creator: Hirshfield, Jay L.
System: The UNT Digital Library
ARM Standards Policy Committee Report (open access)

ARM Standards Policy Committee Report

Data and metadata standards promote the consistent recording of information and are necessary to ensure the stability and high quality of Atmospheric Radiation Measurement (ARM) Climate Research Facility data products for scientific users. Standards also enable automated routines to be developed to examine data, which leads to more efficient operations and assessment of data quality. Although ARM Infrastructure agrees on the utility of data and metadata standards, there is significant confusion over the existing standards and the process for allowing the release of new data products with exceptions to the standards. The ARM Standards Policy Committee was initiated in March 2012 to develop a set of policies and best practices for ARM data and metadata standards.
Date: September 19, 2012
Creator: Cialella, A; Jensen, M; Koontz, A; McFarlane, S; McCoy, R; Monroe, J et al.
System: The UNT Digital Library
Accelerated Corrosion of Stainless Steel in Thiocyanate-Containing Solutions (open access)

Accelerated Corrosion of Stainless Steel in Thiocyanate-Containing Solutions

It is known that reduced sulfur compounds (such as thiocyanate and thiosulfate) can accelerate active corrosion of austenitic stainless steel in acid solutions, but before we started this project the mechanism of acceleration was largely unclear. This work combined electrochemical measurements and analysis using scanning electron microscopy (SEM) and X-ray photo-electron spectroscopy (XPS), which provided a comprehensive understanding of the catalytic effect of reduced sulfur species on the active corrosion of stainless steel. Both the behavior of the pure elements and the steel were studied and the work focused on the interaction between the pure elements of the steel, which is the least understood area. Upon completion of this work, several aspects are now much clearer. The main results from this work can be summarized as follows: The presence of low concentrations (around 0.1 mM) of thiocyanate or tetrathionate in dilute sulfuric acid greatly accelerates the anodic dissolution of chromium and nickel, but has an even stronger effect on stainless steels (iron-chromium-nickel alloys). Electrochemical measurements and surface analyses are in agreement with the suggestion that accelerated dissolution really results from suppressed passivation. Even well below the passivation potential, the electrochemical signature of passivation is evident in the electrode impedance; the …
Date: September 19, 2012
Creator: Pistorius, P. Chris & Li, Wen
System: The UNT Digital Library
High Sodium Simulant Testing To Support SB8 Sludge Preparation (open access)

High Sodium Simulant Testing To Support SB8 Sludge Preparation

Scoping studies were completed for high sodium simulant SRAT/SME cycles to determine any impact to CPC processing. Two SRAT/SME cycles were performed with simulant having sodium supernate concentration of 1.9M at 130% and 100% of the Koopman Minimum Acid requirement. Both of these failed to meet DWPF processing objectives related to nitrite destruction and hydrogen generation. Another set of SRAT/SME cycles were performed with simulant having a sodium supernate concentration of 1.6M at 130%, 125%, 110%, and 100% of the Koopman Minimum Acid requirement. Only the run at 110% met DWPF processing objectives. Neither simulant had a stoichiometric factor window of 30% between nitrite destruction and excessive hydrogen generation. Based on the 2M-110 results it was anticipated that the 2.5M stoichiometric window for processing would likely be smaller than from 110-130%, since it appeared that it would be necessary to increase the KMA factor by at least 10% above the minimum calculated requirement to achieve nitrite destruction due to the high oxalate content. The 2.5M-130 run exceeded the DWPF hydrogen limits in both the SRAT and SME cycle. Therefore, testing of this wash endpoint was halted. This wash endpoint with this minimum acid requirement and mercury-noble metal concentration profile appears …
Date: September 19, 2012
Creator: Newell, J. D.
System: The UNT Digital Library
Overview of Innovative PMI Research on NSTX-U and Associated PMI Facilities at PPPL (open access)

Overview of Innovative PMI Research on NSTX-U and Associated PMI Facilities at PPPL

Developing a reactor compatible divertor and managing the associated plasma material interaction (PMI) has been identified as a high priority research area for magnetic confinement fusion. Accordingly on NSTXU, the PMI research has received a strong emphasis. With ~ 15 MW of auxiliary heating power, NSTX-U will be able to test the PMI physics with the peak divertor plasma facing component (PFC) heat loads of up to 40-60 MW/m2 . To support the PMI research, a comprehensive set of PMI diagnostic tools are being implemented. The snow-flake configuration can produce exceptionally high divertor flux expansion of up to ~ 50. Combined with the radiative divertor concept, the snow-flake configuration has reduced the divertor heat flux by an order of magnitude in NSTX. Another area of active PMI investigation is the effect of divertor lithium coating (both in solid and liquid phases). The overall NSTX lithium PFC coating results suggest exciting opportunities for future magnetic confinement research including significant electron energy confinement improvements, Hmode power threshold reduction, the control of Edge Localized Modes (ELMs), and high heat flux handling. To support the NSTX-U/PPPL PMI research, there are also a number of associated PMI facilities implemented at PPPL/Princeton University including the Liquid …
Date: September 19, 2012
Creator: Ono, M.; Jaworski, M.; Kaita, R.; Skinner, C. N.; Allain, J. P.; Maingi, R. et al.
System: The UNT Digital Library
Final Report on the Development of an Improved Cloud Microphysical Product for Model and Remote Sensing Evaluation using RACORO Observations (open access)

Final Report on the Development of an Improved Cloud Microphysical Product for Model and Remote Sensing Evaluation using RACORO Observations

We proposed to analyze data collected during the Routine Aerial Facilities (AAF) Clouds with Low Optical Water Depths (CLOWD) Optical Radiative Observations (RACORO) in order to develop an integrated product of cloud microphysical properties (number concentration of drops in different size bins, total liquid drop concentration integrated over all bin sizes, liquid water content LWC, extinction of liquid clouds bw, effective radius of water drops re, and radar reflectivity factor) that could be used to evaluate large-eddy simulations (LES), general circulation models (GCMs) and ground-based remote sensing retrievals, and to develop cloud parameterizations with the end goal of improving the modeling of cloud processes and properties and their impact on atmospheric radiation. We have completed the development of this microphysical database and have submitted it to ARM for consideration of its inclusion on the ARM database as a PI product. This report describes the development of this database, and also describes research that has been conducted on cloud-aerosol interactions using the data obtained during RACORO. A list of conference proceedings and publications is also included.
Date: September 19, 2012
Creator: McFarquhar, Greg
System: The UNT Digital Library
U.S. Arms Sales: Agreements with and Deliveries to Major Clients, 2004-2011 (open access)

U.S. Arms Sales: Agreements with and Deliveries to Major Clients, 2004-2011

None
Date: September 19, 2012
Creator: unknown
System: The UNT Digital Library
Instances of Use of United States Armed Forces Abroad, 1798-2012 (open access)

Instances of Use of United States Armed Forces Abroad, 1798-2012

None
Date: September 19, 2012
Creator: unknown
System: The UNT Digital Library
Medigap: A Primer (open access)

Medigap: A Primer

None
Date: September 19, 2012
Creator: unknown
System: The UNT Digital Library
Unemployment Insurance: Programs and Benefits (open access)

Unemployment Insurance: Programs and Benefits

This report describes three kinds of unemployment benefit programs: regular Unemployment Compensation (UC), Extended Benefits (EB), and Emergency Unemployment Compensation (EUC08) . The report explains their basic eligibility requirements, benefits, and financing structure.
Date: September 19, 2012
Creator: Whittaker, Julie M. & Isaacs, Katelin P.
System: The UNT Digital Library
Russian Political, Economic, and Security Issues and U.S. Interests (open access)

Russian Political, Economic, and Security Issues and U.S. Interests

This report discusses the current political and economic conditions in Russia, focusing on the impact of Vladimir Putin's leadership and the leadership of his successor/protégé, Dmitriy Medvedev, both of which have steered Russia away from democratization. The report also discusses the state of the economy since the Soviet collapse in 1999, how the recent global economic downturn has affected Russia, the state of Russia's military, and the current relationship between Russia and the United States.
Date: September 19, 2012
Creator: Nichol, Jim
System: The UNT Digital Library