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430 Matching Results
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War Powers Litigation Initiated by Members of Congress Since the Enactment of the War Powers Resolution
None
Date:
March 19, 2003
Creator:
Ackerman, David M.
Object Type:
Report
System:
The UNT Digital Library
Timpson & Tenaha News (Timpson, Tex.), Vol. 27, No. 11, Ed. 1 Thursday, March 19, 2009
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
March 19, 2009
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
Beam Extraction from Laser Driven Multi-Charged Ion Source
A newly proposed type of multicharged ion source offers the possibility of an economically advantageous high-charge-state fusion driver. Multiphoton absorption in an intense uniform laser focus can give multiple charge states of high purity, simplifying or eliminating the need for charge-state separation downstream. Very large currents (hundreds of amperes) can be extracted from this type of source. Several arrangements are possible. For example, the laser plasma could be tailored for storage in a magnetic bucket, with beam extracted from the bucket. A different approach, described in this report, is direct beam extraction from the expanding laser plasma. They discuss extraction and focusing for the particular case of a 4.1-MV beam of Xe{sup 16+} ions. The maximum duration of the beam pulse is limited by the total charge in the plasma, while the practical pulse length is determined by the range of plasma radii over which good beam optics can be achieved. The extraction electrode contains a solenoid for beam focusing. The design studies were carried out first with an envelope code and then with a self-consistent particle code. Results from the initial model showed that hundreds of amperes could be extracted, but that most of this current missed the solenoid …
Date:
March 19, 2001
Creator:
Anderson, O. A. & Logan, B. G.
Object Type:
Article
System:
The UNT Digital Library
Survey of the ATLAS Pixel Detector Components
This document provides a description of the survey performed on different componentsof the ATLAS Pixel Detector at different stages of its assembly.
Date:
March 19, 2008
Creator:
Andreazza, Attilio; Kostyukhim, Vadim & Madaras, Ronald
Object Type:
Report
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 105, No. 315, Ed. 1 Friday, March 19, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 19, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
ASIC Wafer Test System for the ATLAS Semiconductor Tracker Front-End Chip
An ASIC wafer test system has been developed to provide comprehensive production screening of the ATLAS Semiconductor Tracker front-end chip (ABCD3T). The ABCD3T[1] features a 128-channel analog front-end, a digital pipeline, and communication circuitry, clocked at 40 MHz, which is the bunch crossing frequency at the LHC (Large Hadron Collider). The tester measures values and tolerance ranges of all critical IC parameters, including DC parameters, electronic noise, time resolution, clock levels and clock timing. The tester is controlled by an FPGA (ORCA3T) programmed to issue the input commands to the IC and to interpret the output data. This allows the high-speed wafer-level IC testing necessary to meet the production schedule. To characterize signal amplitudes and phase margins, the tester utilizes pin-driver, delay, and DAC chips, which control the amplitudes and delays of signals sent to the IC under test. Output signals from the IC under test go through window comparator chips to measure their levels. A probe card has been designed specifically to reduce pick-up noise that can affect the measurements. The system can operate at frequencies up to 100 MHz to study the speed limits of the digital circuitry before and after radiation damage. Testing requirements and design solutions …
Date:
March 19, 2002
Creator:
Anghinolfi, F.; Bialas, W.; Busek, N.; Ciocio, A.; Cosgrove, D.; Fadeyev, V. et al.
Object Type:
Article
System:
The UNT Digital Library
A Study of Past, Present, and Future Radiation Dose Pathways from Hanford Site Effluents
The purpose of this study is to determine whether changes to Hanford operations, as well as changes in the regulatory environment, will require new approaches to ensure radiation protection of the public and the environment. This document discusses the applicable regulations that govern public radiation protection at DOE facilities, recent radiological assessments for members of the public near the Hanford Site, and possible new approaches that may be needed to assure that the Hanford Site can demonstrate compliance with regulatory requirements for radiological protection of the public.
Date:
March 19, 2002
Creator:
Antonio, Ernest J.; Rhoads, Kathleen & Staven, Lissa H.
Object Type:
Report
System:
The UNT Digital Library
The Budget for Fiscal Year 2009
This report consists of the budget for fiscal year 2009.
Date:
March 19, 2008
Creator:
Austin, D. Andrew
Object Type:
Report
System:
The UNT Digital Library
Structural characterization of terrestrial microbial Mn oxides from Pinal Creek, AZ
The microbial catalysis of Mn(II) oxidation is believed to be a dominant source of abundant sorption- and redox-active Mn oxides in marine, freshwater, and subsurface aquatic environments. In spite of their importance, environmental oxides of known biogenic origin have generally not been characterized in detail from a structural perspective. Hyporheic zone Mn oxide grain coatings at Pinal Creek, Arizona, a metals-contaminated stream, have been identified as being dominantly microbial in origin and are well studied from bulk chemistry and contaminant hydrology perspectives. This site thus presents an excellent opportunity to study the structures of terrestrial microbial Mn oxides in detail. XRD and EXAFS measurements performed in this study indicate that the hydrated Pinal Creek Mn oxide grain coatings are layer-type Mn oxides with dominantly hexagonal or pseudo-hexagonal layer symmetry. XRD and TEM measurements suggest the oxides to be nanoparticulate plates with average dimensions on the order of 11 nm thick x 35 nm diameter, but with individual particles exhibiting thickness as small as a single layer and sheets as wide as 500 nm. The hydrated oxides exhibit a 10-A basal-plane spacing and turbostratic disorder. EXAFS analyses suggest the oxides contain layer Mn(IV) site vacancy defects, and layer Mn(III) is inferred …
Date:
March 19, 2008
Creator:
Bargar, John; Fuller, Christopher; Marcus, Matthew A.; Brearley, Adrian J.; Perez De la Rosa, M.; Webb, Samuel M. et al.
Object Type:
Article
System:
The UNT Digital Library
National Environmental Education Act of 1990: Overview, Implementation, and Reauthorization Issues
None
Date:
March 19, 2007
Creator:
Bearden, David M.
Object Type:
Report
System:
The UNT Digital Library
Food Safety on the Farm: Federal Programs and Selected Proposals
This report discusses bills introduced into the 110th Congress pertaining to food safety that could affect farmers and ranchers. Several of these bills would expressly have required enforceable on-farm safety standards. Others that focused primarily on post-harvest food safety measures nonetheless might have led to changes in on-farm practices if the regulated sectors (handlers and processors of agricultural products) placed new demands on their suppliers in order to comply. Similar proposals are re-emerging in the 111th Congress, where food safety reform is expected to be on the agenda.
Date:
March 19, 2009
Creator:
Becker, Geoffrey S.
Object Type:
Report
System:
The UNT Digital Library
DSDP3: dual scaling algorithm for general positive semidefinite programming.
We implement a dual scaling algorithm for positive semidefinite programming to handle a broader class of problems than could be solved with previous implementations of the algorithm. With appropriate representations of constraint matrices, we can solve general semidefinite programs and still exploit the structure of large-scale combinatorial optimization problems. Computational results show that our preliminary implementation is competitive with primal-dual solvers on many problems requiring moderate precision in the solution and is superior to primal-dual solvers for several types of problems.
Date:
March 19, 2001
Creator:
Benson, S.J. & Ye, Y.
Object Type:
Article
System:
The UNT Digital Library
The Rice Thresher, Vol. 91, No. 23, Ed. 1 Friday, March 19, 2004
A weekly student newspaper from the Rice University in Houston, Texas that includes campus news and commentaries along with advertising.
Date:
March 19, 2004
Creator:
Berenson, Mark
Object Type:
Newspaper
System:
The Portal to Texas History
Flat Tax Proposals and Fundamental Tax Reform: An Overview
None
Date:
March 19, 2003
Creator:
Bickley, James M.
Object Type:
Report
System:
The UNT Digital Library
Value-Added Tax as a New Revenue Source
MMARY Some Members of Congress have expressed interest in the feasibility of using a value-added tax (VAT) to either replace all or part of the income tax, finance health care reform, or to fund America’s war effort. A VAT is imposed at all levels of production on the differences between firms’ sales and their purchases from all other firms. Policymakers may be interested in the following aspects of a VAT: revenue yield, international comparison of composition of taxes, vertical equity, neutrality, inflation, balance-of-trade, national saving, administrative cost, intergovernmental relations, size of government, and public opinion.
Date:
March 19, 2003
Creator:
Bickley, James M.
Object Type:
Report
System:
The UNT Digital Library
A Value-Added Tax Contrasted with a National Sales Tax
Proposals to replace all or part of the income tax, proposals for national health care, and a proposal to finance America’s war effort have sparked congressional interest in the possibility of a broad-based consumption tax as a new source of revenue. A value-added tax (VAT) or a national sales tax (NST) have been frequently discussed as possible new tax sources. Both the VAT and the NST are taxes on the consumption of goods and services and are conceptually similar. Yet, these taxes also have significant differences. This issue brief discusses some of the potential policy implications associated with these differences.
Date:
March 19, 2003
Creator:
Bickley, James M.
Object Type:
Report
System:
The UNT Digital Library
Investigation of the Richtmyer-Meshkov instability
The present research program is centered on the experimental and numerical study of the hydrodynamics of shock-accelerated spherical density inhomogeneities. These flows are part of a broader category of shock-induced mixing flows that play a critical role in the implosion of D-T pellets in laser-driven ICF experiments. For the past year, our work has consisted of both experimental and numerical activities which were presented at two conferences and resulted in the publication of one journal article and the submission of a second one. The papers from one of the conferences are inlcuded here.
Date:
March 19, 2007
Creator:
Bonazza, Riccardo; Anderson, Mark & Oakley, Jason
Object Type:
Report
System:
The UNT Digital Library
The Goldthwaite Eagle (Goldthwaite, Tex.), Vol. 114, No. 37, Ed. 1 Wednesday, March 19, 2008
Weekly newspaper from Goldthwaite, Texas that includes local, state, and national news along with extensive advertising.
Date:
March 19, 2008
Creator:
Bridges, Steven W.
Object Type:
Newspaper
System:
The Portal to Texas History
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 88, No. 136, Ed. 1 Wednesday, March 19, 2003
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 19, 2003
Creator:
Broaddus, Matthew B.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 89, No. 157, Ed. 1 Friday, March 19, 2004
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 19, 2004
Creator:
Broaddus, Matthew B.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Daily Journal (Perry, Okla.), Vol. 108, No. 55, Ed. 1 Monday, March 19, 2001
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 19, 2001
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Daily Journal (Perry, Okla.), Vol. 109, No. 56, Ed. 1 Tuesday, March 19, 2002
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 19, 2002
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Perry Daily Journal (Perry, Okla.), Vol. 110, No. 48, Ed. 1 Wednesday, March 19, 2003
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 19, 2003
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Perry Daily Journal (Perry, Okla.), Vol. 111, No. 54, Ed. 1 Friday, March 19, 2004
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 19, 2004
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History