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Army Corps Fiscal Challenges: Frequently Asked Questions

Description: This report looks at issues in funding all of the Army Corps requests for the fiscal year. The Army Corps of Engineers is responsible for much of the federal water resources infrastructure in the United States. The Corps is faced with more demands for building and maintaining its projects than available federal funding allows. At issue for Congress is deciding how to tackle Corps fiscal challenges during a tight fiscal climate and under earmark moratoriums.
Date: August 18, 2011
Creator: Carter, Nicole T. & Stern, Charles V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

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

Description: This report covers the sovereign debt crisis currently faced by the Eurozone which has culminated with Greece, which is at the center of the crisis, Ireland, and Portugal borrowing money from other European countries and the International Monetary Fund (IMF) in order to avoid default. Topics covered include: the build-up of Greece's debt crisis, policy responses with limited success, and broader implications. Specific issues for Congress include how the U.S. economy and banking industry will be… more
Date: August 18, 2011
Creator: Nelson, Rebecca M.; Belkin, Paul & Mix, Derek E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Business Case for Energy Efficiency in Support of Climate Change Mitigation, Economic and Societal Benefits in China

Description: This study seeks to provide policymakers and other stakeholders with actionable information towards a road map for reducing energy consumption cost-effectively. We focus on individual end use equipment types (hereafter referred to as appliance groups) that might be the subject of policies - such as labels, energy performance standards, and incentives - to affect market transformation in the short term, and on high-efficiency technology options that are available today. As the study title sugges… more
Date: August 18, 2011
Creator: McNeil, Michael A.; Bojda, Nicholas; Ke, Jing; Qin, Yining; de la Rue du Can, Stephane; Fridley, David et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Descriptor-Based Analysis Applied to HCN Synthesis from NH3 and CH4

Description: The design of solid metal catalysts using theoretical methods has been a long-standing goal in heterogeneous catalysis. Recent developments in methodology and computer technology as well as the establishment of a descriptor-based approach for the analysis of reaction mechanisms and trends across the periodic table allow for the fast screening for new catalytic materials and have lead to first examples of computational discoveries of new materials. The underlying principles of the descriptor-bas… more
Date: August 18, 2011
Creator: Grabow, L
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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ARM Climate Research Facility Quarterly Value-Added Product Report Third Quarter: April 01–June 30, 2011

Description: The purpose of this report is to provide a concise status update for value-added products (VAP) implemented by the Atmospheric Radiation Measurement Climate Research Facility. The report is divided into the following sections: (1) new VAPs for which development has begun, (2) progress on existing VAPs, (3) future VAPs that have been recently approved, (4) other work that leads to a VAP, and (5) top requested VAPs from the archive
Date: August 18, 2011
Creator: Sivaraman, C
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Isospin Splittings of Doubly Heavy Baryons

Description: The SELEX Collaboration has reported a very large isospin splitting of doubly charmed baryons. We show that this effect would imply that the doubly charmed baryons are very compact. One intriguing possibility is that such baryons have a linear geometry Q-q-Q where the light quark q oscillates between the two heavy quarks Q, analogous to a linear molecule such as carbon dioxide. However, using conventional arguments, the size of a heavy-light hadron is expected to be around 0.5 fm, much larger t… more
Date: August 18, 2011
Creator: Brodsky, Stanley J.; Guo, Feng-Kun; Hanhart, Christoph & Meissner, Ulf-G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Nuclear Data Resources for Capture gamma-Ray Spectroscopy and Related Topics

Description: Nuclear reaction data play an important role in nuclear reactor, medical, and fundamental science and national security applications. The wealth of information is stored in internally adopted ENDF-6 and EXFOR formats. We present a complete calculation of resonance integrals, Westcott factors, thermal and Maxwellian-averaged cross sections for Z = 1-100 using evaluated nuclear reaction data. The addition of newly-evaluated neutron reaction libraries, and improvements in data processing technique… more
Date: August 18, 2011
Creator: Pritychenko, B. & Pritychenko,B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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On the Kinematics of Undulator Girder Motion

Description: The theory of rigid body kinematics is used to derive equations that govern the control and measurement of the position and orientation of undulator girders. The equations form the basis of the girder matlab software on the LCLS control system. The equations are linear for small motion and easily inverted as desired. For reference, some relevant girder geometrical data is also given. Equations 6-8 relate the linear potentiometer readings to the motion of the girder. Equations 9-11 relate the ca… more
Date: August 18, 2011
Creator: Welch, J
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Atacama Cosmology Telescope: Cosmology from Galaxy Clusters Detected via the Sunyaev-Zel'dovich Effect

Description: We present constraints on cosmological parameters based on a sample of Sunyaev-Zeldovich-selected galaxy clusters detected in a millimeter-wave survey by the Atacama Cosmology Telescope. The cluster sample used in this analysis consists of 9 optically-confirmed high-mass clusters comprising the high-significance end of the total cluster sample identified in 455 square degrees of sky surveyed during 2008 at 148GHz. We focus on the most massive systems to reduce the degeneracy between unknown clu… more
Date: August 18, 2011
Creator: Sehgal, Neelima; Trac, Hy; Acquaviva, Viviana; Ade, Peter A.R.; Aguirre, Paula; Amiri, Mandana et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Suppression of Beam-Ion Instability in Electron Rings with Multi-Bunch Train Beam Fillings

Description: The ion-caused beam instability in the future light sources and electron damping rings can be serious due to the high beam current and ultra-small emittance of picometer level. One simple and effective mitigation of the instability is a multi-bunch train beam filling pattern which can significantly reduce the ion density near the beam, and therefore reduce the instability growth rate up to two orders of magnitude. The suppression is more effective for high intensity beams with low emittance. Th… more
Date: August 18, 2011
Creator: Wang, L.; Cai, Y.; Raubenheimer, T. O. & Fukuma, H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Six Thousand Electrochemical Cycles of Double-Walled Silicon Nanotube Anodes for Lithium Ion Batteries

Description: Despite remarkable progress, lithium ion batteries still need higher energy density and better cycle life for consumer electronics, electric drive vehicles and large-scale renewable energy storage applications. Silicon has recently been explored as a promising anode material for high energy batteries; however, attaining long cycle life remains a significant challenge due to materials pulverization during cycling and an unstable solid-electrolyte interphase. Here, we report double-walled silicon… more
Date: August 18, 2011
Creator: Wu, H
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Current Trends in Gamma Ray Detection for Radiological Emergency Response

Description: Passive and active detection of gamma rays from shielded radioactive materials, including special nuclear materials, is an important task for any radiological emergency response organization. This article reports on the current trends and status of gamma radiation detection objectives and measurement techniques as applied to nonproliferation and radiological emergencies.
Date: August 18, 2011
Creator: Mukhopadhyay, S., Guss, P., Maurer, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Studies of Ds Decays at BaBar

Description: We present a measurement of the absolute branching fractions {Beta}(D{sub s}{sup -} {yields} {mu}{sup -}{bar {nu}}{sub {mu}}) and {Beta}(D{sub s}{sup -} {yields} {tau}{sup -}{bar {nu}}{sub {tau}}) and of the D{sub s} decay constant, f{sub D{sub s}}. They also obtain an upper limit on {Beta}(D{sub s}{sup -} {yields} e{bar {nu}}{sub e}). Then they present results on Dalitz plot analysis of D{sub s}{sup +} decays to K{sup +}K{sup -}{pi}{sup +} and {pi}{sup +}{pi}{sup -}{pi}{sup +}. The {pi}{sup +}… more
Date: August 18, 2011
Creator: Pappagallo, Marco
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

EFFECTS OF NITRIC ACID ON CRITICALITY SAFETY ANALYSIS

Description: As nitric acid molarity is increased, there are two competing phenomena affecting the reactivity of the system. First, there is interaction between each of the 10 wells in the basket-like insert. As the molarity of the nitric acid solution is increased (it moves from 100% water to 100% HNO{sub 3}), the hydrogen atom density decreases by about 80%. However, it remains a relatively efficient moderator. The moderating ratio of nitric acid is about 90% that of water. As the media between the wells … more
Date: August 18, 2011
Creator: Williamson, B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Single Dirac Cone Topological Surface State and Unusual Thermoelectric Property of Compounds from a New Topological Insulator Family

Description: Angle resolved photoemission spectroscopy (ARPES) study on TlBiTe2 and TlBiSe2 from a Thallium-based III-V-VI2 ternary chalcogenides family revealed a single surface Dirac cone at the center of the Brillouin zone for both compounds. For TlBiSe{sub 2}, the large bulk gap ({approx} 200meV) makes it a topological insulator with better mechanical properties than the previous binary 3D topological insualtor family. For TlBiTe{sub 2}, the observed negative bulk gap indicates it as a semi-metal, rathe… more
Date: August 18, 2011
Creator: Chen, Y.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Scaling Relationships for Adsorption Energies of C2 Hydrocarbons on Transition Metal Surfaces

Description: Using density functional theory calculations we show that the adsorption energies for C{sub 2}H{sub x}-type adsorbates on transition metal surfaces scale with each other according to a simple bond order conservation model. This observation generalizes some recently recognized adsorption energy scaling laws for AH{sub x}-type adsorbates to unsaturated hydrocarbons and establishes a coherent simplified description of saturated as well as unsaturated hydrocarbons adsorbed on transition metal surfa… more
Date: August 18, 2011
Creator: Jones, G
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Trapping of Electron Cloud LLC/Cesrta Quadrupole and Sextupole Magnets

Description: The Cornell Electron Storage Ring (CESR) has been reconfigured as an ultra low emittance damping ring for use as a test accelerator (CesrTA) for International Linear Collider (ILC) damping ring R&D [1]. One of the primary goals of the CesrTA program is to investigate the interaction of the electron cloud with low emittance positron beam to explore methods to suppress the electron cloud, develop suitable advanced instrumentation required for these experimental studies and benchmark predictio… more
Date: August 18, 2011
Creator: Wang, L. & Pivi, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Magnetic Measurement Results of the LCLS Undulator Quadrupoles

Description: This note details the magnetic measurements and the magnetic center fiducializations that were performed on all of the thirty-six LCLS undulator quadrupoles. Temperature rise, standardization reproducibility, vacuum chamber effects and magnetic center reproducibility measurements are also presented. The Linac Coherent Light Source (LCLS) undulator beam line has 33 girders, each with a LCLS undulator quadrupole which focuses and steers the beam through the beam line. Each quadrupole has main qua… more
Date: August 18, 2011
Creator: Anderson, Scott; Caban, Keith; Nuhn, Heinz-Dieter; Reese, Ed & Wolf, Zachary
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Reference Undulator Measurement Results

Description: The LCLS reference undulator has been measured 22 times during the course of undulator tuning. These measurements provide estimates of various statistical errors. This note gives a summary of the reference undulator measurements and it provides estimates of the undulator tuning errors. We measured the reference undulator many times during the tuning of the LCLS undulators. These data sets give estimates of the random errors in the tuned undulators. The measured trajectories in the reference und… more
Date: August 18, 2011
Creator: Wolf, Zachary & Levashov, Yurii
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Multi-jet Merging with NLO Matrix Elements

Description: In the algorithm presented here, the ME+PS approach to merge samples of tree-level matrix elements into inclusive event samples is combined with the POWHEG method, which includes exact next-to-leading order matrix elements in the parton shower. The advantages of the method are discussed and the quality of its implementation in SHERPA is exemplified by results for e{sup +}e{sup -} annihilation into hadrons at LEP, for deep-inelastic lepton-nucleon scattering at HERA, for Drell-Yan lepton-pair pr… more
Date: August 18, 2011
Creator: Siegert, Frank; Hoche, Stefan; Krauss, Frank & Schonherr, Marek
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Effect of 3D Polarization profiles on polarization measurements and colliding beam experiments

Description: The development of polarization profiles are the primary reason for the loss of average polarization. Polarization profiles have been parametrized with a Gaussian distribution. We derive the effect of 3-dimensional polarization profiles on the measured polarization in polarimeters, as well as the observed polarization and the figure of merit in single and double spin experiments. Examples from RHIC are provided. The Relativistic Heavy Ion Collider (RHIC) is the only collider of spin polarized p… more
Date: August 18, 2011
Creator: Fischer, W. & Bazilevsky, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Partition Coefficients of Organic Compounds in Four New Tetraalkylammonium Bis(trifluoromethylsulfonyl)imide Ionic Liquids Using Inverse Gas Chromatography

Description: This article discusses partition coefficients of organic compounds in four new tetraalkylammonium bis(trifluoromethylsulfonyl)imide ionic liquids using inverse gas chromatography.
Date: August 18, 2011
Creator: Acree, William E. (William Eugene); Baker, Gary A.; Mutelet, Fabrice & Moïse, Jean-Charles
Item Type: Refine your search to only Article
Partner: UNT College of Arts and Sciences
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