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113
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Corrective Action Investigation Plan for Corrective Action Unit 143: Area 25 Contaminated Waste Dumps, Nevada Test Site, Nevada
None
Date:
July 12, 1999
Creator:
/NV, USDOE
Object Type:
Report
System:
The UNT Digital Library
F(1) for B (forward) D*ln from lattice QCD
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{Lambda}/dw by the phase space and well-known factors, and extrapolating to w {yields} 1. This yields |V{sub cb}|F{sub B{yields}D*}(1), and F{sub B{yields}D*}(1) is taken from ''theory''. To date models [1] or a combination of a rigorous inequality plus judgement [2] have been used to estimate F{sub B{yields}D*}(1) - 1. In this work [3] they calculate F{sub B{yields}D*}(1) with lattice gauge theory, in the so-called quenched approximation, but the uncertainty from quenching is included in the error budget.
Date:
July 12, 2002
Creator:
A.S. Kronfeld, P.B. Mackenzie and J.N. Simone
Object Type:
Article
System:
The UNT Digital Library
An Overview of High Reliability Transformer Encapsulation Materials
None
Date:
July 12, 2000
Creator:
ARRIS,HOWARD W.
Object Type:
Article
System:
The UNT Digital Library
Supreme Court: Church-State Cases, 2001-2002 Term
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.
Object Type:
Report
System:
The UNT Digital Library
Lawrence Livermore National Laboratory laser-fusion program
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. We have made significant developments in fabricating the target structures. Data from the target experiments are producing important near-term physics results. We have also continued to develop attractive reactor concepts which illustrate ICF's potential as an energy producer.
Date:
July 12, 1982
Creator:
Ahlstrom, H.G.
Object Type:
Article
System:
The UNT Digital Library
Considerations relating to the formulation of limits for unavoidable population exposures to environmental carcinogens
None
Date:
July 12, 1972
Creator:
Albert, R. E. & Altshuler, B.
Object Type:
Article
System:
The UNT Digital Library
Collaborative Research: ARM observations for the development and evaluation of models and parameterizations of cloudy boundary layers
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 the WACR (at the SGP) to provide high temporal and spatial resolution Doppler cloud radar measurements for characterizing in-cloud turbulence, large-eddy circulations, and high resolution cloud structures of direct relevance to high resolution numerical modeling studies. The principal focus of the observational component of this collaborative study during this funding period was on stratocumulus clouds over the SGP site and fair-weather cumuli over the Nauru site. The statistical descriptions of the vertical velocity structures in continental stratocumulus clouds and in the Nauru shallow cumuli that are part of this study represents the most comprehensive observations of the vertical velocities in boundary layer clouds to date and were done in collaboration with Drs. Virendra Ghate and Pavlos Kollias.
Date:
July 12, 2013
Creator:
Albrecht, Bruce
Object Type:
Report
System:
The UNT Digital Library
Sodium boiling detection in LMFBRs (Phase I). Semifinal report
Included are sections dealing with the KNK-II sodium boiling experiment, sodium boiling detection instrumentation for large LMFBR plants, and recommendations for EBR-2 experiments. (DG)
Date:
July 12, 1976
Creator:
Albrecht, R. W. & McCormick, N. J.
Object Type:
Report
System:
The UNT Digital Library
Experimental investigation of effects of moderate sideslip on the flow fields near a 45 degree swept-wing-fuselage combination at low speed
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 local angles of sideslip, which in some cases were nearly double the static angle of sideslip.
Date:
July 12, 1957
Creator:
Alford, William J., Jr. & King, Thomas J., Jr.
Object Type:
Report
System:
The UNT Digital Library
In-duct countermeasures for reducing fire-generated-smoke-aerosol exposure to HEPA filters. [High efficiency particulate aerosol]
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 entire experimental period. This tactic serves two purposes: it optimizes the production of smoke rich in unburned pyrolyzates which provides severe exposure to the filters, and it facilitates the ignition and enhances the combustion of cribs formed with synthetic polymers. The experiments were conducted in an enclosure specifically designed and instrumented for fire tests. The test cell has a volume of 100 m/sup 3/ and includes instrumentation to measure the internal temperature distribution, pressure, thermal radiation field, flow fields, gas concentration, particulate size distribution and mass, fuel weight loss, inlet and exit air velocities, and smoke optical density. The countermeasure techniques include the use of passively operated sprinkler systems in the fire test cell, of fine and dense water scrubbing sprays, and of rolling prefiltration …
Date:
July 12, 1978
Creator:
Alvares, N. J.; Beason, D. G. & Ford, H. W.
Object Type:
Article
System:
The UNT Digital Library
Black Members of the United States Congress: 1789-2001
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.
Object Type:
Report
System:
The UNT Digital Library
Wind prediction with multiple guide stars reduces tomographic errors and expands MOAO field of regard
None
Date:
July 12, 2012
Creator:
Ammons, S. M.; Poyneer, L.; Gavel, D.; Kupke, R.; Max, C. E. & Johnson, L.
Object Type:
Article
System:
The UNT Digital Library
Microarcsecond relative astrometry from the ground with a diffractive pupil
None
Date:
July 12, 2012
Creator:
Ammons, S. Mark; Bendek, Eduardo A.; Guyon, Olivier; Macintosh, Bruce & Savransky, Dmitry
Object Type:
Article
System:
The UNT Digital Library
Development of adaptive resonator techniques for high-power lasers
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.
Object Type:
Article
System:
The UNT Digital Library
Enron: A Select Chronology of Congressional, Corporate, and Government Activities
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 report compares the major provisions of three auditor and accounting reform proposals: H.R. 3763, S. 2673, and a rule proposed on June 20, 2002, by the SEC that would create a new auditor oversight board by using the SEC’s existing authority to regulate corporate accounting. The report focuses on Section 404(a) of the Employee Retirement Income Security Act (ERISA), the federal statute that regulates employer-sponsored pension plans. Section 404(a) is considered the “touchstone for understanding the scope and object of an ERISA fiduciary’s duties.”
Date:
July 12, 2002
Creator:
Anderson, J. Michael
Object Type:
Report
System:
The UNT Digital Library
Examination of Genetic Alterations in Preneoplastic and Neoplastic Lesions of the Lung From Uranium Miners. Final Technical Report
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 ultimately could lead to diagnostic modalities for the early detection of lung cancer; and (2) detection of novel tumor suppressor genes on chromosome 9p. This proposal will analyze both tumor specimens and sputum samples.
Date:
July 12, 2000
Creator:
Anderson, Marshall
Object Type:
Report
System:
The UNT Digital Library
Recovery Act: Energy Efficiency of Data Networks through Rate Adaptation (EEDNRA) - Final Technical Report
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 equipment has not yet been designed to incorporate rate adaptation. The Study concerns packet-switching equipment, routers and switches; such equipment forms the backbone of the modern Internet. The focus of the study is on algorithms and protocols that can be implemented in software or firmware to exploit hardware power-control mechanisms. Hardware power-control mechanisms are widely used in the computer industry, and are beginning to be available for networking equipment as well. Network equipment has different performance requirements than computer equipment because of the very fast rate of packet arrival; hence novel power-control algorithms are required for networking. This study resulted in five published papers, one internal report, and two patent applications, documented below. The specific technical accomplishments are the following: • A model for the power consumption …
Date:
July 12, 2011
Creator:
Andrews, Matthew; Antonakopoulos, Spyridon; Fortune, Steve; Francini, Andrea & Zhang, Lisa
Object Type:
Report
System:
The UNT Digital Library
Spiraling Edge: Fast Surface Reconstruction from Partially Organized Sample Points
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 addition to sample point locations, our algorithm starts with normal information and knowledge of each point's neighbors. Our algorithm produces a localized approximation to the surface by creating a star-shaped triangulation between a point and a subset of its nearest neighbors. This surface patch is extended by locally triangulating each of the points along the edge of the patch. As each edge point is triangulated, it is removed from the edge and new edge points along the patch's edge are inserted in its place. The updated edge spirals out over the surface until the edge encounters a surface boundary and stops growing in that direction, or until the edge reduces to a small hole that is filled by the final triangle.
Date:
July 12, 1999
Creator:
Angel, Edward & Crossno, Patricia
Object Type:
Article
System:
The UNT Digital Library
Visual Debugging of Visualization Software: A Case Study for Particle Systems
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 permits visual pattern recognition skills to be applied to the debugging problem. The particular application is a particle system used for isosurface extraction from volumetric data. Coloring particles based on individual attributes is especially helpful when these colorings are viewed as animations over successive iterations in the program. Although we describe a particular application, the types of tools that we discuss can be applied to a variety of problems.
Date:
July 12, 1999
Creator:
Angel, Edward & Crossno, Patricia
Object Type:
Article
System:
The UNT Digital Library
Plow.
Patent for a new and useful plow, including instructions and illustrations.
Date:
July 12, 1898
Creator:
Ankarstolpe, Nels.
Object Type:
Patent
System:
The Portal to Texas History
Performance of 2nd Generation BaBar Resistive Plate Chambers
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 few of the highest rate RPCs have suffered efficiency losses of 5-15%. Although constructed with improved techniques and minimal use of linseed oil, many of the RPCs, which are operated in streamer mode, have shown increased dark currents and noise rates that are correlated with the direction of the gas flow and the integrated current. Studies of the above aging effects are presented and correlated with detector operating conditions.
Date:
July 12, 2005
Creator:
Anulli, F.; Baldini, R.; Calcaterra, A.; de Sangro, R.; Finocchiaro, G.; Patteri, P. et al.
Object Type:
Article
System:
The UNT Digital Library
Design of an Interaction Region with Head-On Collisions for the ILC
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- beams horizontally, first by electrostatic separators operated at their LEP nominal field and then using a defocusing quadrupole of the final focus beam line. In this way the septum magnet is protected from the beamstrahlung power. Newly optimized final focus and extraction optics are presented, including a first look at post-collision diagnostics. The influence of parasitic collisions is shown to lead to a region of stable collision parameters. Disrupted beam and beamstrahlung photon losses are calculated along the extraction elements.
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.
Object Type:
Article
System:
The UNT Digital Library
The 2mrad Crossing Angle Interaction Region and Extraction Line
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.
Object Type:
Article
System:
The UNT Digital Library
Containment purge and vent valve program. Final report
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 results obtained. Complete sets of data for each valve program were transmitted to EG and G, Idaho for detailed analysis.
Date:
July 12, 1984
Creator:
Archbold, P.
Object Type:
Report
System:
The UNT Digital Library