Search Results

open access

Analysis and correction of vertical dispersion in RHIC

Description: In the context of preserving the polarization of proton beams, the source of vertical dispersion in RHIC is analyzed. Contributions to dispersion from non-coupling sources and coupling sources are compared. Based on the analysis of sources for dispersion, the right actuator for correcting dispersion is determined and a corresponding algorithm is developed.
Date: September 14, 2011
Creator: Liu, C. & Minty, M.
Partner: UNT Libraries Government Documents Department
open access

Drug Safety: FDA Faces Challenges Overseeing the Foreign Drug Manufacturing Supply Chain

Description: Testimony issued by the Government Accountability Office with an abstract that begins "Globalization has placed increasing demands on the Food and Drug Administration (FDA) in ensuring the safety and effectiveness of drugs marketed in the United States. The pharmaceutical industry has increasingly relied on global supply chains in which each manufacturing step may be outsourced to foreign establishments. As part of its efforts, FDA may conduct inspections of foreign drug manufacturing establish… more
Date: September 14, 2011
Creator: United States. Government Accountability Office.
Partner: UNT Libraries Government Documents Department
open access

Efficient scalable algorithms for hierarchically semiseparable matrices

Description: Hierarchically semiseparable (HSS) matrix algorithms are emerging techniques in constructing the superfast direct solvers for both dense and sparse linear systems. Here, we develope a set of novel parallel algorithms for the key HSS operations that are used for solving large linear systems. These include the parallel rank-revealing QR factorization, the HSS constructions with hierarchical compression, the ULV HSS factorization, and the HSS solutions. The HSS tree based parallelism is fully expl… more
Date: September 14, 2011
Creator: Wang, Shen; Xia, Jianlin; Situ, Yingchong & Hoop, Maarten V. de
Partner: UNT Libraries Government Documents Department
open access

Event-by-event study of neutron observables in spontaneous and thermal fission

Description: The event-by-event fission model FREYA is extended to spontaneous fission of actinides and a variety of neutron observables are studied for spontaneous fission and fission induced by thermal neutrons with a view towards possible applications for SNM detection. We have shown that event-by-event models of fission, such as FREYA, provide a powerful tool for studying fission neutron correlations. Our results demonstrate that these correlations are significant and exhibit a dependence on the fission… more
Date: September 14, 2011
Creator: Vogt, R & Randrup, J
Partner: UNT Libraries Government Documents Department
open access

Homeownership Counseling: Although Research Suggests Some Benefits, Implementation and Evaluation Challenges Exist

Description: Testimony issued by the Government Accountability Office with an abstract that begins "Homeownership counseling can help consumers learn about buying a home and give them tools to deal with setbacks that could keep them from making timely mortgage payments. The Department of Housing and Urban Development (HUD) approves and provides grants to housing counseling agencies and has also implemented a requirement that borrowers seeking federally insured reverse mortgages through the Home Equity Conve… more
Date: September 14, 2011
Creator: United States. Government Accountability Office.
Partner: UNT Libraries Government Documents Department

Indirect Charged Higgs Constraints from BaBar

Description: The high-statistics data samples from the BABAR and Belle B-Factory experiments provide stringent constraints on charged Higgs bosons within the context of specific New Physics models. These constraints are obtained by comparing Standard Model predictions with experimental observations in rare B decays with potential sensitivity to contributions mediated by a virtual H{sup {+-}} in tree or loop diagrams. Recent experimental results on the decays B{sup +} {yields} {mu}{sup +}{nu}, B{sup +} {yiel… more
Date: September 14, 2011
Creator: Robertson, Steven H.
Partner: UNT Libraries Government Documents Department
open access

Intelligence Issues for Congress

Description: This report gives an overview of current intelligence issues of interest to the 112th Congress. It includes background and analysis including most recent development, ongoing Congressional concerns, specific issues for the 112th Congress, and a summary of related legislation from the 109th through the 112th Congresses.
Date: September 14, 2011
Creator: Best, Richard A., Jr.
Partner: UNT Libraries Government Documents Department
open access

Joint Strike Fighter: Implications of Program Restructuring and Other Recent Developments on Key Aspects of DOD's Prior Alternate Engine Analyses

Description: Correspondence issued by the Government Accountability Office with an abstract that begins "After supporting a Joint Strike Fighter (JSF) acquisition strategy that called for a competitive engine development of the F135 and F136 engines, the Department of Defense (DOD) stopped requesting funding for the F136 alternate engine in its fiscal year 2007 budget request, but the Congress continued to fund it through the 2010 budget. In February 2010, DOD projected that it would cost an additional $2.9… more
Date: September 14, 2011
Creator: United States. Government Accountability Office.
Partner: UNT Libraries Government Documents Department
open access

Lawrence Livermore National Laboratory Environmental Report 2010

Description: The purposes of the Lawrence Livermore National Laboratory Environmental Report 2010 are to record Lawrence Livermore National Laboratory's (LLNL's) compliance with environmental standards and requirements, describe LLNL's environmental protection and remediation programs, and present the results of environmental monitoring at the two LLNL sites - the Livermore site and Site 300. The report is prepared for the U.S. Department of Energy (DOE) by LLNL's Environmental Protection Department. Submit… more
Date: September 14, 2011
Creator: Jones, H. E.; Bertoldo, N. A.; Campbell, C. G.; Cerruti, S. J.; Coty, J. D.; Dibley, V. R. et al.
Partner: UNT Libraries Government Documents Department
open access

Mechanical Design of the HER Synchrotron Light Monitor Primary Mirror

Description: This paper describes the mechanical design of the primary mirror that images the visible portion of the synchrotron radiation (SR) extracted from the High Energy Ring (HER) of the PEP-II B-Factory. During off-axis operation, the water-cooled GlidCop mirror is subjected to a heat flux in excess of 2000 W/cm2. When on-axis imaging occurs, the heat flux due to scattered SR, resistive wall losses and Higher-Order-Mode (HOM) heating is estimated at 1 W/cm2. The imaging surface is plated with Electro… more
Date: September 14, 2011
Creator: Daly, Edward F.; Fisher, Alan S.; Kurita, Nadine R. & Langton, J.
Partner: UNT Libraries Government Documents Department
open access

The Next Linear Collider Test Accelerator's RF Pulse Compression And Transmission

Description: The overmoded rf transmission and pulsed power compression system for SLAC's Next Linear Collider (NLC) program requires a high degree of transmission efficiency and mode purity to be economically feasible. To this end, a number of new, high power components and systems have been developed at X-band, which transmit rf power in the low loss, circular TE01 mode with negligible mode conversion. In addition, a highly efficient SLED-II* pulse compressor has been developed and successfully tested at … more
Date: September 14, 2011
Creator: Tantawi, S. G.; Adelphson, C.; Holmes, S.; Lavine, Theodore L.; Loewen, R. J.; Nantista, C. et al.
Partner: UNT Libraries Government Documents Department
open access

Novel polymer membrane process for pre-combustion CO{sub 2} capture from coal-fired syngas

Description: This final report describes work conducted for the Department of Energy (DOE NETL) on development of a novel polymer membrane process for pre-combustion CO{sub 2} capture from coalfired syngas (award number DE-FE0001124). The work was conducted by Membrane Technology and Research, Inc. (MTR) from September 15, 2009, through December 14, 2011. Tetramer Technologies, LLC (Tetramer) was our subcontract partner on this project. The National Carbon Capture Center (NCCC) at Wilsonville, AL, provided … more
Date: September 14, 2011
Creator: Merkel, Tim
Partner: UNT Libraries Government Documents Department
open access

THE POTENTIAL OF NANOPARTICLE ENHANCED IONIC LIQUIDS (NEILS) AS ADVANCED HEAT TRANSFER FLUIDS

Description: Interest in capturing the energy of the sun is rising as demands for renewable energy sources increase. One area of developing research is the use of concentrating solar power (CSP), where the solar energy is concentrated by using mirrors to direct the sunlight towards a collector filled with a heat transfer fluid (HTF). The HTF transfers the collected energy into pressurized steam, which is used to generate energy. The greater the energy collected by the HTF, the more efficent the electrical e… more
Date: September 14, 2011
Creator: Fox, E.; Bridges, N. & Visser, A.
Partner: UNT Libraries Government Documents Department
open access

Study of B Decays to Open Charm Final States With the BaBar Experiment

Description: Recent results from the BaBar Collaboration in the sector of B decays to open Charm are presented. Some of the results represent new precision measurements and QCD tests, some other analysis is aimed to the study of rare decays and search for new physics. Branching fractions for the modes observed for the first time are highlighted. A few results are presented also in the baryon sector.
Date: September 14, 2011
Creator: Calderini, Giovanni & /INFN, Pisa /Pisa U.
Partner: UNT Libraries Government Documents Department
open access

Study of the Power Supply Ripple Effect on teh Dynamics at SPEAR

Description: For long term stability analysis time variation of tunes is important. We have proposed and tested a technique for measuring the magnitude of this variation. This was made possible by using tune extraction algorithms that require small number of turns thus giving an instantaneous tune of the machine. In this paper we demonstrate the measured effect of the tune modulation with 60 Hz power supplies ripple, power line interference from SLAC linac operating at 30 Hz repetition rate, and nonperiodic… more
Date: September 14, 2011
Creator: Terebilo, A.; Pellegrini, C.; Cornacchia, M.; Corbett, J. & Martin, D.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen