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Israel: Background and Relations with the United States
This report provides an overview of the background of Israel and its relations with the United States.
Date:
July 6, 2007
Creator:
Migdalovitz, Carol
Object Type:
Report
System:
The UNT Digital Library
Labor, Health and Human Services, and Education: FY2008 Appropriations
None
Date:
July 6, 2007
Creator:
Smith, Pamela W.
Object Type:
Report
System:
The UNT Digital Library
Measurements of the Transverse Wakefields Due to Varying Collimator Characteristics
We report on measurements of the transverse wakefields induced by collimators of differing characteristics. An apparatus allowing the insertion of different collimator jaws into the path of a beam was installed in End Station A (ESA) in SLAC. Eight comparable collimator geometries were designed, including one that would allow easy comparison with previous results, and were installed in this apparatus. Measurements of the beam kick due to the collimator wakefields were made with a beam energy of 28.5 GeV, and beam dimensions of 100 microns vertically and a range of 0.5 to 1.5 mm longitudinally. The trajectory of the beam upstream and downstream of the collimator test apparatus was determined from the outputs of ten BPMs (four upstream and six downstream), thus allowing a measurement of the angular kick imparted to the beam by the collimator under test. The transverse wakefield was inferred from the measured kick. The different aperture designs, data collection and analysis, and initial comparison to theoretical and analytic predictions are presented here.
Date:
July 6, 2007
Creator:
Molloy, S.; Seletskiy, Sergei; Woods, Mike; /SLAC; Smith, Jonathan David Andrew; Tech., /Cockcroft Inst. Accel. Sci. et al.
Object Type:
Article
System:
The UNT Digital Library
National Animal Identification System: USDA Needs to Resolve Several Key Implementation Issues to Achieve Rapid and Effective Disease Traceback
A letter report issued by the Government Accountability Office with an abstract that begins "Livestock production contributed nearly $123 billion to the U.S. economy in 2006. In response to concerns about animal disease outbreaks, the U.S. Department of Agriculture (USDA) announced in December 2003 that it would implement a nationwide program--later named the National Animal Identification System (NAIS)--to help producers and animal health officials respond quickly and effectively to animal disease events in the United States. In this context, GAO determined (1) how effectively USDA is implementing NAIS and, specifically, the key issues identified by livestock industry groups, market operators, state officials, and others; (2) how USDA has distributed cooperative agreement funds to help states and industry prepare for NAIS and evaluated the agreements' results; and (3) what USDA and others estimate are the costs for USDA, states, and industry to implement NAIS. In conducting its work, GAO reviewed USDA documents; interviewed agency, industry, and state officials; and consulted 32 animal identification (ID) experts."
Date:
July 6, 2007
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Navy CG(X) Cruiser Design Options: Background and Oversight Issues for Congress
None
Date:
July 6, 2007
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Novel QCD Phenomena
I discuss a number of novel topics in QCD, including the use of the AdS/CFT correspondence between Anti-de Sitter space and conformal gauge theories to obtain an analytically tractable approximation to QCD in the regime where the QCD coupling is large and constant. In particular, there is an exact correspondence between the fifth-dimension coordinate z of AdS space and a specific impact variable {zeta} which measures the separation of the quark constituents within the hadron in ordinary space-time. This connection allows one to compute the analytic form of the frame-independent light-front wavefunctions of mesons and baryons, the fundamental entities which encode hadron properties and allow the computation of exclusive scattering amplitudes. I also discuss a number of novel phenomenological features of QCD. Initial- and final-state interactions from gluon-exchange, normally neglected in the parton model, have a profound effect in QCD hard-scattering reactions, leading to leading-twist single-spin asymmetries, diffractive deep inelastic scattering, diffractive hard hadronic reactions, the breakdown of the Lam Tung relation in Drell-Yan reactions, and nuclear shadowing and non-universal antishadowing--leading-twist physics not incorporated in the light-front wavefunctions of the target computed in isolation. I also discuss tests of hidden color in nuclear wavefunctions, the use of diffraction to materialize …
Date:
July 6, 2007
Creator:
Brodsky, Stanley J.
Object Type:
Article
System:
The UNT Digital Library
ODTX Measurements and Simulations on Ultra Fine TATB and PBX-9502
We measure the time to explosion of 12.7 mm diameter spheres of ultra fine TATB and PBX-9502 (95 wt% TATB, 5 wt% Kel-F 800) at 85.0, 92.5, and 98.0 percent of theoretical maximum density (TMD) in confined and unconfined configurations and at several elevated temperatures with the Lawrence Livermore National Laboratory (LLNL) One Dimensional Time to Explosion (ODTX) apparatus. Time to explosion data provide insight into the relative ease of thermal ignition and allow for the calibration of kinetic parameters. The measurements show that PBX-9502 is more thermally stable than ultra fine TATB, that unconfined samples are slightly more thermally stable than confined ones, and that lower density samples are more thermally stable than higher density ones. 'Go/no go' data at the lowest temperatures yield an experimental measurement of the critical temperature, which is the temperature at which an explosive can be heated indefinitely without undergoing self-heating and concomitant rapid and violent decomposition. Critical temperatures ranges for 12.7 mm diameter spheres of 98% TMD ultra fine TATB and PBX-9502 are 213-230 C and 234-239 C, respectively. Experimental data are modeled with ALE3D and kinetic parameters are determined. These kinetic parameters, when coupled with thermal property data, provide good prediction of …
Date:
July 6, 2007
Creator:
Koerner, J; Maienschein, J; Burnham, A & Wemhoff, A.
Object Type:
Article
System:
The UNT Digital Library
The Optimized Bunch Compressor for the International Linear Collider
The International Linear Collider (ILC) utilizes a two stage Bunch Compressor (BC) that compresses the RMS bunch length from 9 mm to 200 to 300 micrometers before sending the electron beam to the Main Linac. This paper reports on the new design of the optimized BC wiggler. It was reduced in length by more than 30%. The introduction of nonzero dispersion slope in the BC wigglers enabled them to generate the required compression while having a small SR emittance growth, a tunability range of over a factor of 2 in each wiggler, and less than 3% RMS energy spread throughout the entire system.
Date:
July 6, 2007
Creator:
Seletskiy, S. & Tenenbaum, P.
Object Type:
Article
System:
The UNT Digital Library
Oral History Interview with Morton Harrington, July 6, 2007
The National Museum of the Pacific War presents an interview with Morton Harrington. Harrington joined the Navy in January of 1944. He completed Gunnery School and Aviation Ordnance School, learning about aircraft bombs, fuses, various caliber guns, rockets, flags, radio communication and Morse Code. Beginning February of 1945 Harrington was assigned to the USS Nehenta Bay (CVE–74), serving as a turret gunner aboard both TBF’s and TBM’s. Their ship qualified with F4-U Corsair squadrons for carrier work. They traveled to Eniwetok, bombing several islands that the Japanese still held. In April of 1945 they participated in the Battle of Okinawa, where they shot down three kamikazes. Harrington provides details of his experiences aboard the Nehenta Bay and throughout their battles. He was discharged in January of 1946.
Date:
July 6, 2007
Creator:
Harrington, Morton
Object Type:
Sound
System:
The Portal to Texas History
Oral History Interview with Morton Harrington, July 6, 2007
The National Museum of the Pacific War presents an interview with Morton Harrington. Harrington joined the Navy in January of 1944. He completed Gunnery School and Aviation Ordnance School, learning about aircraft bombs, fuses, various caliber guns, rockets, flags, radio communication and Morse Code. Beginning February of 1945 Harrington was assigned to the USS Nehenta Bay (CVE–74), serving as a turret gunner aboard both TBF’s and TBM’s. Their ship qualified with F4-U Corsair squadrons for carrier work. They traveled to Eniwetok, bombing several islands that the Japanese still held. In April of 1945 they participated in the Battle of Okinawa, where they shot down three kamikazes. Harrington provides details of his experiences aboard the Nehenta Bay and throughout their battles. He was discharged in January of 1946.
Date:
July 6, 2007
Creator:
Harrington, Morton
Object Type:
Text
System:
The Portal to Texas History
Oral History Interview with Ralph Weymouth, July 6, 2007
The National Museum of the Pacific War presents an interview with Ralph Weymouth. Weymouth joined the Navy in June of 1934. He graduated from the Naval Academy in 1938. He completed flight training in August of 1940. Beginning September of 1943, he served as Commanding Officer of Bombing Squadron 16 (VB-16) aboard USS Lexington (CV-16). Weymouth participated in the Gilbert Islands operation and the Battle of the Philippine Sea. He continued his service after the war, retiring in January of 1973 as a vice admiral and anti-nuclear campaigner.
Date:
July 6, 2007
Creator:
Weymouth, Ralph
Object Type:
Sound
System:
The Portal to Texas History
Oral History Interview with Ralph Weymouth, July 6, 2007
The National Museum of the Pacific War presents an interview with Ralph Weymouth. Weymouth joined the Navy in June of 1934. He graduated from the Naval Academy in 1938. He completed flight training in August of 1940. Beginning September of 1943, he served as Commanding Officer of Bombing Squadron 16 (VB-16) aboard USS Lexington (CV-16). Weymouth participated in the Gilbert Islands operation and the Battle of the Philippine Sea. He continued his service after the war, retiring in January of 1973 as a vice admiral and anti-nuclear campaigner.
Date:
July 6, 2007
Creator:
Weymouth, Ralph
Object Type:
Text
System:
The Portal to Texas History
Pakistan: Significant Recent Events, March 26 - June 21, 2007
None
Date:
July 6, 2007
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Pension Benefit Guaranty Corporation: Governance Structure Needs Improvements to Ensure Policy Direction and Oversight
A letter report issued by the Government Accountability Office with an abstract that begins "The Pension Benefit Guaranty Corporation (PBGC) insures the pensions of millions of private sector workers and retirees in certain employer-sponsored pension plans. It is governed by a board of directors consisting of the Secretaries of the Treasury, Labor, and Commerce, who are charged with providing PBGC with policy direction and oversight. This report assesses (1) the extent to which PBGC's governance structure provides PBGC with policy direction and oversight, and (2) whether administrative responsibilities among the PBGC board, Department of Labor (DOL), and PBGC management are clearly defined. We examined corporate governance practices, select federal government corporations, and reviewed documents on PBGC's structure. We interviewed officials from all board member agencies and PBGC, among others."
Date:
July 6, 2007
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Perry Daily Journal (Perry, Okla.), Vol. 115, No. 131, Ed. 1 Friday, July 6, 2007
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
July 6, 2007
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Precise Calculation of Traveling-Wave Periodic Structure
The effects of the round edge beam hole on the frequency and wake field are studied using variational method, which allows for rounded iris disk hole without any approximation in shape treatment. The frequency and wake field of accelerating mode and dipole mode are studied for different edge radius cases, including the flat edge shape that is often used to approximately represent the actual structure geometry. The edge hole shape has weak effect on the frequency, but much effect on the wake field. Our study shows that the amounts of wake fields are not precise enough with the assumption of the flat edge beam hole instead of round edge.
Date:
July 6, 2007
Creator:
Wang, L.; Li, Z. & Seryi, A.
Object Type:
Article
System:
The UNT Digital Library
Regional Analysis of Lg Attenuation: Comparison of 1D Methods in Northern California and Application to the Yellow Sea / Korean Peninsula
The measurement of regional attenuation Q{sup -1} can produce method dependent results. The discrepancies among methods are due to differing parameterizations (e.g., geometrical spreading rates), employed datasets (e.g., choice of path lengths and sources), and methodologies themselves (e.g., measurement in the frequency or time domain). We apply the coda normalization (CN), two-station (TS), reverse two-station (RTS), source-pair/receiver-pair (SPRP), and the new coda-source normalization (CS) methods to measure Q of the regional phase, Lg (Q{sub Lg}), and its power-law dependence on frequency of the form Q{sub 0}f{sup {eta}} with controlled parameterization in the well-studied region of northern California using a high-quality dataset from the Berkeley Digital Seismic Network. We test the sensitivity of each method to changes in geometrical spreading, Lg frequency bandwidth, the distance range of data, and the Lg measurement window. For a given method, there are significant differences in the power-law parameters, Q{sub 0} and {eta}, due to perturbations in the parameterization when evaluated using a conservative pairwise comparison. The CN method is affected most by changes in the distance range, which is most probably due to its fixed coda measurement window. Since, the CS method is best used to calculate the total path attenuation, it is very …
Date:
July 6, 2007
Creator:
Ford, S R; Dreger, D S; Mayeda, K M; Walter, W R; Malagnini, L & Phillips, W S
Object Type:
Article
System:
The UNT Digital Library
Resolution of a High Performance Cavity Beam Position Monitor System
None
Date:
July 6, 2007
Creator:
Walston, S.; Chung, C.; Fitsos, P.; Gronberg, J.; Ross, M.; Khainovski, O. et al.
Object Type:
Article
System:
The UNT Digital Library
Resolution of a High Performance Cavity Beam Positron Monitor System
International Linear Collider (ILC) interaction region beam sizes and component position stability requirements will be as small as a few nanometers. It is important to the ILC design effort to demonstrate that these tolerances can be achieved--ideally using beam-based stability measurements. It has been estimated that RF cavity beam position monitors (BPMs) could provide position measurement resolutions of less than one nanometer and could form the basis of the desired beam-based stability measurement. We have developed a high resolution RF cavity BPM system. A triplet of these BPMs has been installed in the extraction line of the KEK Accelerator Test Facility (ATF) for testing with its ultra-low emittance beam. A metrology system for the three BPMs was recently installed. This system employed optical encoders to measure each BPM's position and orientation relative to a zero-coefficient of thermal expansion carbon fiber frame and has demonstrated that the three BPMs behave as a rigid-body to less than 5 nm. To date, we have demonstrated a BPM resolution of less than 20 nm over a dynamic range of +/- 20 microns.
Date:
July 6, 2007
Creator:
Walston, S.; Chung, C.; Fitsos, P.; Gronberg, J.; Ross, M.; Khainovski, O. et al.
Object Type:
Article
System:
The UNT Digital Library
Sales of Sensitive Military Property to the Public
Correspondence issued by the Government Accountability Office with an abstract that begins "Each year the Department of Defense (DOD) sells millions of dollars worth of excess property to the public through a Web site run by its contractor, Government Liquidation. Before excess property can be sold on this site, it is DOD policy to screen the property to ensure it cannot be reutilized by the department in another location or that its sale would not result in sensitive military property becoming publicly available. DOD assigns demilitarization codes to sensitive military property so that, when the property is no longer in use, it is recognized and disposed of properly. However, on several prior occasions--most recently at a July 2006 hearing--we reported that management control breakdowns in DOD's excess property reutilization program resulted in the sale of sensitive military property to the public through the liquidation Web site, including property subject to demilitarization controls (demil-required property) such as F-14 aircraft parts. One country with operational F-14s, Iran, is known to be seeking these parts. If such parts were publicly available, it could jeopardize national security. At the July 2006 hearing, DOD officials testified that they would take action to prevent the improper …
Date:
July 6, 2007
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 92, No. 204, Ed. 1 Friday, July 6, 2007
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
July 6, 2007
Creator:
Mattox, Jami
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Selecting RF Amplifiers for Impedance Controlled LLRF Systems - Nonlinear Effects and System Implications
Several high-current accelerators use feedback techniques in the accelerating RF systems to control the impedances seen by the circulating beam. These Direct and Comb Loop architectures put the high power klystron and LLRF signal processing components inside feedback loops, and the ultimate behavior of the systems depends on the individual sub-component properties. Imperfections and non-idealities in the signal processing leads to reduced effectiveness in the impedance control loops. In the PEP-II LLRF systems non-linear effects have been shown to reduce the achievable beam currents, increase low-mode longitudinal growth rates and reduce the margins and stability of the LLRF control loops. We present measurements of the driver amplifiers used in the PEP-II systems, and present measurement techniques needed to quantify the small-signal gain, linearity, transient response and image frequency generation of these amplifiers.
Date:
July 6, 2007
Creator:
Fox, John D.; Mastorides, Themis; Rivetta, Claudio Hector & Van Winkle, Daniel
Object Type:
Article
System:
The UNT Digital Library
A self-adaptive burst-detection algorithm
Article accompanying a poster presentation for the 2007 Computational Neuroscience Meeting. This article discusses a self-adaptive burst-detection algorithm.
Date:
July 6, 2007
Creator:
Tam, Nicoladie D.
Object Type:
Article
System:
The UNT Digital Library
Simulation of the Beam-Ion Instability in the Electron Damping Ring of the International Linear Collider
Ion induced beam instability is one critical issue for the electron damping ring of the International Linear Collider (ILC) due to its ultra small emittance of 2pm. Bunch train filling pattern is proposed to mitigate the instability and bunch-by-bunch feedback is applied to suppress it. Multibunch train fill pattern is introduced in the electron beam to reduce the number of trapped ions. Our study shows that the ion effects can be significantly mitigated by using multiple gaps. However, the beam can still suffer from the beam-ion instability driven by the accumulated ions that cannot escape from the beam during the gaps. The effects of beam fill pattern, emittance, vacuum and various damping mechanism are studied using self-consistent program, which includes the optics of the ring.
Date:
July 6, 2007
Creator:
Wang, L.; Cai, Y. & Raubenheimer, T.
Object Type:
Article
System:
The UNT Digital Library