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Calculation of Fragmentation Functions in Two-Hadron Semi-Inclusive Processes.
We investigate the properties of interference fragmentation functions arising from the emission of two leading hadrons inside the same jet for inclusive lepton-nucleon deep inelastic scattering. Using an extended spectator model for the mechanism of the hadronization, we give a complete calculation and numerical estimates for the examples of a proton-pion pair produced with invariant mass on the Roper resonance, and of two pions produced with invariant mass close to the {rho} mass. We discuss azimuthal angular dependence of the leading order cross section to point up favourable conditions for extracting transversity from experimental data.
Date:
April 24, 2001
Creator:
Bianconi, A.; Boffi, S.; Boer, D.; Jakob, R. & Radici, M.
Object Type:
Article
System:
The UNT Digital Library
Campaign Finance Bills in the 107th Congress: House
This report summarizes each House bill offered in the 107th Congress, arranged in both numerical order and by major issue addressed, with any legislative action shown.The provisions of these bills are grouped into 15 categories, based on type on issue addressed.
Date:
April 24, 2001
Creator:
Cantor, Joseph E.
Object Type:
Report
System:
The UNT Digital Library
The Canadian Record (Canadian, Tex.), Vol. 3, No. 21, Ed. 1 Thursday, May 24, 2001
Weekly newspaper from Canadian, Texas that includes local, state and national news along with extensive advertising.
Date:
May 24, 2001
Creator:
Ezzell, Nancy & Brown, Laurie Ezzell
Object Type:
Newspaper
System:
The Portal to Texas History
A Catalog of Vadose Zone Hydraulic Properties for the Hanford Site
The purpose of this catalog is to integrate all available soil physics data and information from vadose zone characterization and performance assessments into one useable, scientifically defensible document.
Date:
September 24, 2001
Creator:
Freeman, Eugene J.; Khaleel, Raziuddin & Heller, Paula R.
Object Type:
Report
System:
The UNT Digital Library
A Catalog of Vadose Zone Hydraulic Properties for the Hanford Site
The purpose of this catalog is to integrate all available soil physics data and information from vadose zone characterization and performance assessments into one usable, scientifically defensible document.
Date:
September 24, 2001
Creator:
Freeman, Eugene J; Khaleel, Raziuddin & Heller, Paula R
Object Type:
Report
System:
The UNT Digital Library
Characterization of the Radioactive Sludge from the ORNL MVST Waste Tanks
Over the last several years most of the sludge and liquid from the Liquid Low-Level Waste (LLLW) tanks at ORNL has been transferred and consolidated in the Melton Valley Storage Tanks (MVST). The contents of the MVST tanks at the time the sludge samples were collected for this report included the original inventory in the MVSTs along with the sludge and liquid from the Bethel Valley Evaporator Service Tanks (BVEST), Old Hydrofracture (OHF) tanks, and the Gunite and Associated Tanks (GAAT). During the summer of 2001 full core samples of sludge were collected from the MVST tanks. The purpose of this sampling campaign was to characterize and validate that the current radiochemical and chemical contents of the MVST sludge, which was needed to meet the contract agreements prior to the transfer of the waste to another DOE contractor for processing. This report only discusses the analytical characterization of the sludge from the MVST waste tanks. The isotopic data presented in this report supports the position that fissile isotopes of uranium ({sup 233}U and {sup 235}U) and plutonium ({sup 239}Pu and {sup 241}Pu) were ''denatured'' as required by the administrative controls stated in the ORNL LLLW waste acceptance criteria (WAC). In …
Date:
October 24, 2001
Creator:
Keller, J.M.
Object Type:
Report
System:
The UNT Digital Library
The Clifton Record (Clifton, Tex.), Vol. 106, No. 7, Ed. 1 Wednesday, January 24, 2001
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
January 24, 2001
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 106, No. 68, Ed. 1 Friday, August 24, 2001
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
August 24, 2001
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 106, No. 85, Ed. 1 Wednesday, October 24, 2001
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
October 24, 2001
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Cloture: Its Effects on Senate Floor Proceedings
This report is on Cloture: Its Effects on Senate Floor Proceedings.
Date:
January 24, 2001
Creator:
Bach, Stanley
Object Type:
Report
System:
The UNT Digital Library
Coalition Warfare: Gulf War Allies Differed in Chemical and Biological Threats Identified and in Use of Defensive Measures
A letter report issued by the General Accounting Office with an abstract that begins "GAO confirmed differences among the United States, the United Kingdom, and France in the rates at which illnesses have been reported among their Gulf War veterans; their assessment of nuclear, biological, and chemical threats in the Gulf; and their preparations to meet them. However, because of differences in the experiences of the three sets of veterans, there is no single, unambiguous cause that can be identified for the reported illnesses. If multinational allies are to act in a coordinated fashion, they require a similar level of awareness of and preparation for the threats to be faced; otherwise, force protection and operational success could be jeopardized and the utility of some forces restricted. Gulf War Coalition members prepared for somewhat different threats and used different countermeasures. In addition, the U.S. lacked clear doctrine for timely and systematic warning of allied forces and U.S. ground troops about pending strikes on suspected nuclear, biological, and chemical targets."
Date:
April 24, 2001
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Cold Vacuum Drying Facility Stack Air Sampling System Qualification Tests
This report documents tests that were conducted to verify that the air monitoring system for the Cold Vacuum Drying Facility ventilation exhaust stack meets the applicable regulatory criteria regarding the placement of the air sampling probe, sample transport, and stack flow measurement accuracy.
Date:
January 24, 2001
Creator:
Glissmeyer, John A.
Object Type:
Report
System:
The UNT Digital Library
Cold Vacuum Drying Facility Stack Air Sampling System Qualification Tests
This report documents tests that were conducted to verify that the air monitoring system for the Cold Vacuum Drying Facility ventilation exhaust stack meets the applicable regulatory criteria regarding the placement of the air sampling probe, sample transport, and stack flow measurement accuracy.
Date:
January 24, 2001
Creator:
Glissmeyer, John A
Object Type:
Report
System:
The UNT Digital Library
The Collegian (Hurst, Tex.), Vol. 13, No. 13, Ed. 1 Wednesday, January 24, 2001
Weekly student newspaper published in Hurst, Texas and serving the Tarrant County College District that includes school news and information along with advertising.
Date:
January 24, 2001
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Collegian (Hurst, Tex.), Vol. 14, No. 8, Ed. 1 Wednesday, October 24, 2001
Weekly student newspaper published in Hurst, Texas and serving the Tarrant County College District that includes school news and information along with advertising.
Date:
October 24, 2001
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Colony Courier-Leader (The Colony, Tex.), Vol. 20, No. 15, Ed. 1 Thursday, May 24, 2001
Weekly newspaper from The Colony, Texas that includes local, state, and national news along with advertising.
Date:
May 24, 2001
Creator:
Beesley, Tom
Object Type:
Newspaper
System:
The Portal to Texas History
Comanche Chief (Comanche, Tex.), No. 3, Ed. 1 Thursday, May 24, 2001
Weekly newspaper from Comanche, Texas that includes local, state, and national news along with advertising.
Date:
May 24, 2001
Creator:
Wilkerson, James C., III
Object Type:
Newspaper
System:
The Portal to Texas History
Comanche Chief (Comanche, Tex.), No. 34, Ed. 1 Monday, December 24, 2001
Weekly newspaper from Comanche, Texas that includes local, state, and national news along with advertising.
Date:
December 24, 2001
Creator:
Wilkerson, James C., III
Object Type:
Newspaper
System:
The Portal to Texas History
Combating Terrorism: Observations on Options to Improve the Federal Response
Testimony issued by the General Accounting Office with an abstract that begins "This testimony discusses three bills that would change the overall leadership and management of programs to combat terrorism. The three bills--H.R. 525, H.R. 1158, and H.R. 1292--vary in scope. H.R. 525 focuses on federal programs to prepare state and local governments for domestic terrorist attacks. Both H.R. 1158 and H.R. 1292 focus on the larger issue of homeland security, which includes terrorism and additional threats such as military attacks. The bills are similar in that they all advocate a single focal point for programs to combat terrorism. However, some bills place the focal point in the Executive Office of the President and others place it with a lead executive agency. In addition, the three bills provide the focal point with different, but often similar, duties to improve the management of federal programs. To the extent that these three bills--or some hybrid of them--address these problem areas, GAO believes that federal programs to combat terrorism will be improved. It will be important to develop a consensus on these matters and provide the focal point with legitimacy and authority through legislation are important tasks that lie ahead."
Date:
April 24, 2001
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
Community meeting on proposed rail alignments within Northwest Corridor's Medical Center district
News release concerning public meetings on proposed rail alignments and stations servicing the Dallas Medical Center area.
Date:
August 24, 2001
Creator:
Lyons, Morgan
Object Type:
Text
System:
The Portal to Texas History
A Comparative experimental study of media access protocols for wireless radio networks
We conduct a comparative experimental analysis of three well known media access protocols: 802.11, CSMA, and MACA for wireless radio networks. Both fixed and ad-hoc networks are considered. The experimental analysis was carried out using GloMoSim: a tool for simulating wireless networks. The main focus of experiments was to study how (i) the size of the network, (ii) number of open connections, (iii) the spatial location of individual connections, (iv) speed with which individual nodes move and (v) protocols higher up in the protocol stack (e,g. routing layer) affect the performance of the media access sublayer protocols. The performance of the protocols was measured w.r.t. three important parameters: (1) number of received packets, (2) average latency of each packet, and (3) throughput. The following general qualitative conclusions were obtained; some of the conclusions reinforce the earlier claims by other researchers. (1) Although 802.11 performs better than the other two protocols with respect to fairness of transmission, packets dropped, and latency, its performance is found to (i) show a lot of variance with changing input parameters and (ii) the overall performance still leaves a lot of room for improvement. (2) CSMA does not perform too well under the fairness criteria, however, …
Date:
May 24, 2001
Creator:
Barrett, C. L. (Christopher L.); Drozda, M. (Martin) & Marathe, M. V. (Madhav V.)
Object Type:
Article
System:
The UNT Digital Library
Comparative Study of Surface-lattice-site Resolved Neutralization of Slow Multicharged Ions during Large-angle Quasi-binary Collisions with Au(110): Simulation and Experiment
In this article we extend our earlier studies of the azimuthal dependences of low energy projectiles scattered in large angle quasi-binary collisions from Au(110). Measurements are presented for 20 keV Ar{sup 9+} at normal incidence, which are compared with our earlier measurements for this ion at 5 keV and 10{sup 0} incidence angle. A deconvolution procedure based on MARLOWE simulation results carried out at both energies provides information about the energy dependence of projectile neutralization during interactions just with the atoms along the top ridge of the reconstructed Au(110) surface corrugation, in comparison to, e.g., interactions with atoms lying on the sidewalls. To test the sensitivity of the agreement between the MARLOWE results and the experimental measurements, we show simulation results obtained for a non-reconstructed Au(110) surface with 20 keV Ar projectiles, and for different scattering potentials that are intended to simulate the effects on scattering trajectory of a projectile inner shell vacancy surviving the binary collision, In addition, simulation results are shown for a number of different total scattering angles, to illustrate their utility in finding optimum values for this parameter prior to the actual measurements.
Date:
August 24, 2001
Creator:
Meyer, F.W.
Object Type:
Article
System:
The UNT Digital Library
COMPLETION OF SUPERCONDUCTING MAGNET PRODUCTION AT BNL FOR THE HERA LUMINOSITY UPGRADE
Brookhaven National Laboratory (BNL) has completed production of the superconducting multi-function magnets that are now installed as part of the HERA luminosity upgrade at DESY. The magnets, cryostats, and lead assemblies were designed and built at BNL. To fit inside the existing detectors, the coils plus cryostat structure had to meet a challenging radial budget (e.g., 39 mm horizontally). Two types of magnets were needed and three of each type were built. Each magnet contained normal and skew quadrupole, normal and skew dipole, and sextupole coils. The magnets operate in the {approx}1.5 T solenoid field of a detector. The quadrupole coils produce gradients up to 13 T/m. The dipole coils generate fields up to 0.3 T. Coils were wound under computer control using either seven-strand round cable or a single strand. To simultaneously avoid excessive synchrotron radiation background scattered from the beam pipe and yet have a small cryostat, one type of magnet used a tapered coil structure. The cryogenic system incorporates cooling with both 40 K helium and supercritical helium. All of the coils were tested in liquid helium in a vertical dewar. Quench test results have been excellent. The field quality of the magnets has met the stringent …
Date:
September 24, 2001
Creator:
WANDERER,P. ANERELLA,M. ESCALLIER,J. GHOSH,A. JAIN,A. MARONE,A. MURATORE,J. PARKER,A. PRODELL,A. THOMPSON,P. WU,K. C.
Object Type:
Article
System:
The UNT Digital Library
Conceptual Design of Pion Capture Magnets of Up to 15 Cm Bore and 20 T Peak Field.
For the Neutrino Factory and Muon Collider Collaboration, BNL has considered solenoidal magnet systems of several types to capture pions generated by bombarding a mercury jet with multi-GeV protons. The magnet systems generate up to 20 T, uniform to 5% throughout a cylindrical volume 0.15 m in diameter and 0.6 m long. Axially downstream the field ramps gradually downward by a factor of sixteen, while the bore increases fourfold. The steady-state system needed for an accelerator has many superconducting coils and a radiation-resistant insert of mineral-insulated hollow conductor. Less costly, pulsed systems suffice to study pion capture and the effect of a magnetic field on a jet hit by a proton beam. BNL has explored three types of magnets, each with its principal coils precooled by liquid nitrogen. One type employs two sets of coils energized sequentially. Charged in 23 s by a power supply of 5 MVA, the 16ton outer set generates 10 T and stores 28 MJ, from which, in 1/3 s, to charge a half-ton inner coil that adds 12 1/2 T to the 7 1/2 T remaining from the outer set. An alternative design uses 25 MVA to energize, in 1.4 s, a single 3-ton set …
Date:
September 24, 2001
Creator:
Weggel, R. J.
Object Type:
Article
System:
The UNT Digital Library