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823 Matching Results
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District of Columbia: Weaknesses in Financial Management System Implementation
A letter report issued by the General Accounting Office with an abstract that begins "The District of Columbia is acquiring a new financial management system to improve its accountability over government expenditures. This report assesses the status of the District of Columbia's implementation of important components of this system, including its new core general ledger System of Accounting and Reporting (SOAR). GAO found that although the District is in its fourth year of implementing its new financial management system, essential elements of the system are not yet operational. Two components of SOAR have not been fully implemented: the budget module is on hold, and the fixed assets module is incomplete. The implementation of the systems that feed into SOAR--personnel and payroll, procurement, and tax--is incomplete and the systems lack electronic interfaces with SOAR. Because the financial management system is incomplete, much of the District's financial management and budget information is produced through cumbersome, manual processes and the extraordinary efforts of a few key staff. District officials need to take time to assess the current status of the city's financial system, to identify problems, and to establish a disciplined process to address these problems through the completion of its financial systems …
Date:
April 30, 2001
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Effect of Microstructure on Low Temperature Cracking Behavior of EN82H Welds
As-fabricated EN82H welds are susceptible to low temperature embrittlements in 54 degree C hydrogenated water. Values of J[sub]IC in water are typically 90% to 98% lower than those in air due to a fracture mechanism transition from microvoid coalescence to hydrogen-included intergranular fracture. Environmental J[sub]IC testing demonstrated that a high temperature (1093 degree C) anneal and furnace-cool alleviates the material's susceptibility to hydrogen-induced intergranular cracking. To identify metallurgical and compositional features that are responsible for the material's environment-sensitive behavior, detailed characterization of the microstructure and grain boundary chemistry for the as-fabricated and as-annealed materials was performed. Results from light optical microscopy, analytical electron microscopy, electron probe microanalysis, Auger electron spectroscopy and mechanical property characterization are used to provide insight into the observed low temperature embrittlement phenomenon. The key microstructural feature responsible for low temperature cracking in as-fabricated welds appears to be fine niobium and titanium-rich carbonitrides that cover most grain boundaries. These precipitates are effective hydrogen traps that promote hydrogen-induced intergranular cracking. Dissolution the fine carbonitrides during the 1093 degree C anneal reduces grain boundary trapping sites, which accounts for the improved fracture resistance displayed by the annealed weld. The role of strength level in promoting low temperature embrittlement is …
Date:
April 30, 2001
Creator:
Mills, W. J.; Brown, C. M. & Burke, M. G.
Object Type:
Article
System:
The UNT Digital Library
Effects of temporal modeling on the statistical uncertainty of spatiotemporal distributions estimated directly from dynamic SPECT projections
Artifacts can result when reconstructing a dynamic image sequence from inconsistent single photon emission computed tomography (SPECT) projections acquired by a slowly rotating gantry. The artifacts can lead to biases in kinetic parameters estimated from time-activity curves generated by overlaying volumes of interest on the images. To overcome these biases in conventional image based dynamic data analysis, we have been investigating the estimation of time-activity curves and kinetic model parameters directly from dynamic SPECT projection data by modeling the spatial and temporal distribution of the radiopharmaceutical throughout the projected field of view. In previous work we developed computationally efficient methods for fully four-dimensional (4-D) direct estimation of spatiotemporal distributions [1] and their statistical uncertainties [2] from dynamic SPECT projection data, using a spatial segmentation and temporal B-splines. In addition, we studied the bias that results from modeling various orders of temporal continuity and using various time samplings [1]. In the present work, we use the methods developed in [1, 2] and Monte Carlo simulations to study the effects of the temporal modeling on the statistical variability of the reconstructed distributions.
Date:
April 30, 2001
Creator:
Reutter, Bryan W.; Gullberg, Grant T. & Huesman, Ronald H.
Object Type:
Article
System:
The UNT Digital Library
Elections Reform: Overview and Issues
This report discusses several issues as the Congress considers legislation to reform the voting process, a number of issues have emerged as part of the debate: the reliability of different types of voting technologies; voting problems and irregularities in the 2000 election; problems for militaryand overseas voters; the electoral college; and early media projections of election results.
Date:
April 30, 2001
Creator:
Coleman, Kevin J. & Fischer, Eric A.
Object Type:
Report
System:
The UNT Digital Library
Electronic Records: Clinton Administration's Management of Executive Office of the President E-Mail System
A letter report issued by the General Accounting Office with an abstract that begins "This report discusses the facts surrounding the ability of the Clinton White House to preserve certain electronic mail (e-mail) deemed official government records. GAO found that two malfunctions occurred in the White House e-mail system that prevented official records from being properly recorded in the Automated Records Management System (ARMS). The first problem involved an anomaly with incoming Internet e-mail users of the "Mail2" e-mail server. The second problem surfaced while the contractor was trying the resolve the first problem. During its efforts to determine the cause of the Mail2 e-mail errors, the letter D was deleted from a key piece of software, causing the ARMS scanner to skip e-mail accounts of users with first names beginning with the letter D. The White House began a costly and time-consuming project to recover e-mail records that had not been effectively managed. Several factors contributed to the cost and scope of the tape restoration project, including the contractor's performance of tape management and systems maintenance and legal scrutiny of e-mail malfunctions by external authorities."
Date:
April 30, 2001
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Electronic Warfare: The Army Can Reduce Its Risks in Developing New Radar Countermeasures System
A letter report issued by the General Accounting Office with an abstract that begins "The Army is acquiring a new, state-of-the-art radar countermeasures system--called the Suite of Integrated Radio Frequency Countermeasures to help helicopters and other aircraft identify, track, and defeat radar-guided missiles in complex electronic environments where many radar systems could be operating simultaneously. The Army has identified software and hardware modification needed for its new radar countermeasures system. The Army expects that future tests will enable it to determine whether the modified software performs as required before the planned low-rate initial production decision in early 2002. However, the testing of the modified hardware is not scheduled for completion until September 2002. By deferring low-rate initial production decision, the Army would reduce the risk of incurring anticipated costs to retrofit articles if the system does not work as expected."
Date:
April 30, 2001
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
EPAct: Alternative Fuels for Energy Security, Cleaner Air
A summary of the EPAct program as a whole, including fleet information and regulations.
Date:
April 30, 2001
Creator:
Melendez, M.
Object Type:
Book
System:
The UNT Digital Library
Excitation of the synchro-betatron resonances by the beam-beam interaction in the Tevatron Run II lattice
Effect of different mechanisms of the synchro-betatron coupling (dispersion function at the interaction points, chromatic tune modulation, finite bunch length) on the p-bar stability in the Tevatron Run II configuration is considered. It is found that the long-range interactions in the presence of large dispersion produce large contribution ({approximately}10) to the chromaticity of the betatron tunes. This chromaticity, in its turn, can give rise to multiple synchrotron satellites of the betatron resonances increasing their effective width. Novel formulae are presented which permit to significantly speed up analytical calculations of the beam-beam tuneshifts and resonance strength.
Date:
April 30, 2001
Creator:
Alexahin, Yuri I.
Object Type:
Report
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Monday, April 30, 2001
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 30, 2001
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Feasibility of Isotopic Measurements: Graphite Isotopic Ratio Method
This report addresses the feasibility of the laboratory measurements of isotopic ratios for selected trace constituents in irradiated nuclear-grade graphite, based on the results of a proof-of-principal experiment completed at Pacific Northwest National Laboratory (PNNL) in 1994. The estimation of graphite fluence through measurement of isotopic ratio changes in the impurity elements in the nuclear-grade graphite is referred to as the Graphite Isotope Ratio Method (GIRM). Combined with reactor core and fuel information, GIRM measurements can be employed to estimate cumulative materials production in graphite moderated reactors. This report documents the laboratory procedures and results from the initial measurements of irradiated graphite samples. The irradiated graphite samples were obtained from the C Reactor (one of several production reactors at Hanford) and from the French G-2 Reactor located at Marcoule. Analysis of the irradiated graphite samples indicated that replicable measurements of isotope ratios could be obtained from the fluence sensitive elements of Ti, Ca, Sr, and Ba. While these impurity elements are present in the nuclear-grade graphite in very low concentrations, measurement precision was typically on the order of a few tenths of a percent to just over 1 percent. Replicability of the measurements was also very good with measured values …
Date:
April 30, 2001
Creator:
Wood, Thomas W.; Gerlach, David C.; Reid, Bruce D. & Morgan, W. C.
Object Type:
Report
System:
The UNT Digital Library
Festival of the Arts
Photograph of a scene during the Festival of the Arts, at the Myriad Gardens.
Date:
April 30, 2001
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Festival of the Arts
Photograph of a scene during the Festival of the Arts, at the Myriad Gardens.
Date:
April 30, 2001
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Festival of the Arts
Photograph of a scene during the Festival of the Arts, at the Myriad Gardens.
Date:
April 30, 2001
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Festival of the Arts
Photograph of a scene during the Festival of the Arts, at the Myriad Gardens.
Date:
April 30, 2001
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Festival of the Arts
Photograph of a scene during the Festival of the Arts, at the Myriad Gardens, with the Oklahoma City Skyline in the background.
Date:
April 30, 2001
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Festival of the Arts
Photograph of a scene during the Festival of the Arts, at the Myriad Gardens, with the Oklahoma City Skyline in the background.
Date:
April 30, 2001
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Festival of the Arts
Photograph of a scene during the Festival of the Arts, at the Myriad Gardens.
Date:
April 30, 2001
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Festival of the Arts
Photograph of a scene during the Festival of the Arts, at the Myriad Gardens, with the Oklahoma City Skyline in the background.
Date:
April 30, 2001
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Festival of the Arts
Photograph of a scene during the Festival of the Arts, at the Myriad Gardens.
Date:
April 30, 2001
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Festival of the Arts
Photograph of a scene during the Festival of the Arts, at the Myriad Gardens, with the Oklahoma City Skyline in the background.
Date:
April 30, 2001
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Festival of the Arts
Photograph of a scene during the Festival of the Arts, at the Myriad Gardens, with the Oklahoma City Skyline in the background.
Date:
April 30, 2001
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Festival of the Arts
Photograph of a scene during the Festival of the Arts, at the Myriad Gardens.
Date:
April 30, 2001
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Festival of the Arts
Photograph of a scene during the Festival of the Arts, at the Myriad Gardens, with the Oklahoma City Skyline in the background.
Date:
April 30, 2001
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Festival of the Arts
Photograph of a scene during the Festival of the Arts, at the Myriad Gardens, with the Oklahoma City Skyline in the background.
Date:
April 30, 2001
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History