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open access

F(1) for B (forward) D*ln from lattice QCD

Description: The authors would like to determine |V{sub cb}| from the exclusive semi-leptonic decay B{yields}D*lv. The differential decay rate is d{Lambda}/dw = G{sub F}{sup 2}/4{pi}{sup 3}(w{sup 2}-1){sup 1/2}m{sub D*}{sup 3} (m{sub B}-m{sub D*}){sup 2}G(w)|V{sub cb}|{sup 2}|F{sub B{yields}D*}(w)|{sup 2}, where w = v {center_dot} v{prime} and G(1) = 1. At zero recoil (w = 1) heavy-quark symmetry requires F{sub B{yields}D*}(1) to be close to 1. So, |V{sub cb}| is determined by dividing measurements of d{Lam… more
Date: July 12, 2002
Creator: A.S. Kronfeld, P.B. Mackenzie and J.N. Simone
Partner: UNT Libraries Government Documents Department
open access

Supreme Court: Church-State Cases, 2001-2002 Term

Description: This issue brief discusses a number of Supreme Court cases that heavily concern church and state from the 2001-2002 Term. It provides detailed summaries on two decided cases, Watchtower Bible & Tract Society of New York, Inc v. Stratton, Ohio and Zelman v. Selmon-Harris.
Date: July 12, 2002
Creator: Ackerman, David M.
Partner: UNT Libraries Government Documents Department
open access

Lawrence Livermore National Laboratory laser-fusion program

Description: The goals of the Laser-Fusion Program at Lawrence Livermore National Laboratory are to produce well-diagnosed, high-gain, laser-driven fusion explosions in the laboratory and to exploit this capability for both military applications and for civilian energy production. In the past year we have made significant progress both theoretically and experimentally in our understanding of the laser interaction with both directly coupled and radiation-driven implosion targets and their implosion dynamics.… more
Date: July 12, 1982
Creator: Ahlstrom, H.G.
Partner: UNT Libraries Government Documents Department
open access

Collaborative Research: ARM observations for the development and evaluation of models and parameterizations of cloudy boundary layers

Description: This is a collaborative project with Dr. Ping Zhu at Florida International University. It was designed to address key issues regarding the treatment of boundary layer cloud processes in climate models with UM’s research focusing on the analyses of ARM cloud radar observations from MMCR and WACR and FIU’s research focusing on numerical simulations of boundary layer clouds. This project capitalized on recent advancements in the ARM Millimeter Cloud Radar (MMCR) processing and the development of t… more
Date: July 12, 2013
Creator: Albrecht, Bruce
Partner: UNT Libraries Government Documents Department
open access

Experimental investigation of effects of moderate sideslip on the flow fields near a 45 degree swept-wing-fuselage combination at low speed

Description: The flow fields near a 45 degree swept-wing-fuselage combination at moderate angles of sideslip (plus-or-minus 8 degrees), as determined experimentally at low speed, are presented as variations with chordwise distance for various spanwise and vertical locations and angles of attack. The results indicated that for positions close to the fuselage (on and near the plane of symmetry) changes in the angle of sideslip caused large changes in the flow-field characteristics and particularly in the loca… more
Date: July 12, 1957
Creator: Alford, William J., Jr. & King, Thomas J., Jr.
Partner: UNT Libraries Government Documents Department
open access

Scaling Breakdown: A Signature of Aging

Description: In this article, the authors prove that the Lévy walk is characterized by bilinear scaling. This effect mirrors the existence of a form of aging that does not require the adoption of nonstationary conditions.
Date: July 12, 2002
Creator: Allegrini, Paolo; Bellazzini, Jacopo; Bramanti, G.; Ignaccolo, Massimiliano; Grigolini, Paolo & Yang, J.
Partner: UNT College of Arts and Sciences
open access

In-duct countermeasures for reducing fire-generated-smoke-aerosol exposure to HEPA filters. [High efficiency particulate aerosol]

Description: An experimental program was conducted to assess the endurance and lifetime of HEPA filters exposed to fire-generated aerosols, and to reduce the aerosol exposure by installing engineering countermeasures in the duct between the fire source and HEPA filters. Large cribs of wood and other potential fuels of interest were ''forcefully burned'' in a partially ventilated enclosure. In a ''forceful burn'' the crib of fuel is continuously exposed to an energetic premixed methane flame during the entir… more
Date: July 12, 1978
Creator: Alvares, N. J.; Beason, D. G. & Ford, H. W.
Partner: UNT Libraries Government Documents Department
open access

Black Members of the United States Congress: 1789-2001

Description: Thirty-nine black Members serve in the 107th Congress, all in the House of Representatives. In 210 years of congressional history, there have been 107 black Members of Congress: 103 elected to the House and four to the Senate. This report includes alphabetical listing of black members, selected biographical information, and committee assignments during their tenure in office.
Date: July 12, 2001
Creator: Amer, Mildred L. (Mildred Lehmann)
Partner: UNT Libraries Government Documents Department
open access

Development of adaptive resonator techniques for high-power lasers

Description: The design of an adaptive wavefront control system for a high-power Nd:Glass laser will be presented. Features of this system include: an unstable resonator in confocal configuration, a multi-module slab amplifier, and real-time intracavity adaptive phase control using deformable mirrors and high-speed wavefront sensors. Experimental results demonstrate the adaptive correction of an aberrated passive resonator (no gain).
Date: July 12, 1999
Creator: An, J.; Brase, J.; Carrano, C.; Dane, C. B.; Flath, L.; Fochs, S. et al.
Partner: UNT Libraries Government Documents Department
open access

Enron: A Select Chronology of Congressional, Corporate, and Government Activities

Description: This report presents basic background information on the collapse of the Enron Corporation, identifying public policy issues in financial market oversight. This report briefly summarizes some federal laws carrying criminal penalties which may be implicated in the events surrounding the collapse of the Enron Corp. This report compares the auditing and accounting reform measures passed by the House (H.R. 3763) and reported by the Senate Committee on Banking, Housing, and Urban Affairs. This repor… more
Date: July 12, 2002
Creator: Anderson, J. Michael
Partner: UNT Libraries Government Documents Department
open access

Examination of Genetic Alterations in Preneoplastic and Neoplastic Lesions of the Lung From Uranium Miners. Final Technical Report

Description: Lung cancer is one of the leading causes of death in the United States and in Western Europe. The incidence of lung cancer in developing countries is rising as their cigarette smoking habits increase. The objectives of this proposed research are to analyze genetic alterations associated with the development and progression on non-small cell lung carcinoma (MSCLC). Endpoints that may be realized from this proposed research are: (1) detection of early genetic and/or cellular alterations which ult… more
Date: July 12, 2000
Creator: Anderson, Marshall
Partner: UNT Libraries Government Documents Department
open access

Recovery Act: Energy Efficiency of Data Networks through Rate Adaptation (EEDNRA) - Final Technical Report

Description: This Concept Definition Study focused on developing a scientific understanding of methods to reduce energy consumption in data networks using rate adaptation. Rate adaptation is a collection of techniques that reduce energy consumption when traffic is light, and only require full energy when traffic is at full provisioned capacity. Rate adaptation is a very promising technique for saving energy: modern data networks are typically operated at average rates well below capacity, but network equipm… more
Date: July 12, 2011
Creator: Andrews, Matthew; Antonakopoulos, Spyridon; Fortune, Steve; Francini, Andrea & Zhang, Lisa
Partner: UNT Libraries Government Documents Department
open access

Spiraling Edge: Fast Surface Reconstruction from Partially Organized Sample Points

Description: Many applications produce three-dimensional points that must be further processed to generate a surface. Surface reconstruction algorithms that start with a set of unorganized points are extremely time-consuming. Sometimes, however, points are generated such that there is additional information available to the reconstruction algorithm. We present Spiraling Edge, a specialized algorithm for surface reconstruction that is three orders of magnitude faster than algorithms for the general case. In … more
Date: July 12, 1999
Creator: Angel, Edward & Crossno, Patricia
Partner: UNT Libraries Government Documents Department
open access

Visual Debugging of Visualization Software: A Case Study for Particle Systems

Description: Visualization systems are complex dynamic software systems. Debugging such systems is difficult using conventional debuggers because the programmer must try to imagine the three-dimensional geometry based on a list of positions and attributes. In addition, the programmer must be able to mentally animate changes in those positions and attributes to grasp dynamic behaviors within the algorithm. In this paper we shall show that representing geometry, attributes, and relationships graphically permi… more
Date: July 12, 1999
Creator: Angel, Edward & Crossno, Patricia
Partner: UNT Libraries Government Documents Department
open access

Performance of 2nd Generation BaBar Resistive Plate Chambers

Description: The BaBar detector has operated nearly 200 Resistive Plate Chambers (RPCs), constructed as part of an upgrade of the forward endcap muon detector, for the past two years. The RPCs experience widely different background and luminosity-driven singles rates (0.01-10 Hz/cm{sup 2}) depending on position within the endcap. Some regions have integrated over 0.3 C/cm{sup 2}. RPC efficiency measured with cosmic rays is high and stable. The average efficiency measured with beam is also high. However, a f… more
Date: July 12, 2005
Creator: Anulli, F.; Baldini, R.; Calcaterra, A.; de Sangro, R.; Finocchiaro, G.; Patteri, P. et al.
Partner: UNT Libraries Government Documents Department
open access

Design of an Interaction Region with Head-On Collisions for the ILC

Description: An interaction region (IR) with head-on collisions is considered as an alternative to the baseline configuration of the International Linear Collider (ILC) which includes two IRs with finite crossing-angles (2 and 20 mrad). Although more challenging for the beam extraction, the head-on scheme is favored by the experiments because it allows a more convenient detector configuration, particularly in the forward region. The optics of the head-on extraction is revisited by separating the e+ and e- b… more
Date: July 12, 2006
Creator: Appleby, R.; U., /Cockcroft Inst. Accel. Sci. Tech. /Manchester; Angal-Kalinin, D.; Jackson, F.; /Daresbury; Alabau-Pons, M . et al.
Partner: UNT Libraries Government Documents Department
open access

The 2mrad Crossing Angle Interaction Region and Extraction Line

Description: A complete optics design for the 2mrad crossing angle interaction region and extraction line was presented at Snowmass 2005. Since this time, the design task force has been working on developing and improving the performance of the extraction line. The work has focused on optimizing the final doublet parameters and on reducing the power losses resulting from the disrupted beam transport. In this paper, the most recent status of the 2mrad layout and the corresponding performance are presented.
Date: July 12, 2006
Creator: Appleby, R.; U., Manchester; Angal-Kalinin, D.; Tech, /Cockcroft Inst. Accel. Sci.; Dadoun, O.; Bambade, P. et al.
Partner: UNT Libraries Government Documents Department
open access

Containment purge and vent valve program. Final report

Description: This report describes the Test Piping System and Instrumentation used to determine the forces acting against the actuator when closing a butterfly valve against flow. Locations of the test instrumentation are shown and photos of the installation are included. The techniques for determining bearing and packing resistance, seating forces and fluid dynamic forces are described. Various problems encountered and corrective actions taken are discussed. Typical plots are included to illustrate the res… more
Date: July 12, 1984
Creator: Archbold, P.
Partner: UNT Libraries Government Documents Department
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