Degree Department

Degree Discipline

Degree Level

1,375 Matching Results

Results open in a new window/tab.

The 4-8 GHz Stochastic Cooling Upgrade for the Fermilab Debuncher (open access)

The 4-8 GHz Stochastic Cooling Upgrade for the Fermilab Debuncher

During the Fermilab Collider Run II, the Main Injector is expected to provided a three-fold increase in flux of the proton beam sent to the antiproton production target as compared to the previous Collider Run Ib. This increase in antiproton production rate to 20 x 10{sup 10} antiprotons/hour will be handled by upgrading the stochastic cooling systems in both the Debuncher and Accumulator rings of the Fermilab Antiproton Source. In the Debuncher ring, the upgrade calls for increasing the stochastic cooling system bandwidth from 2-4 to 4-8 GHz. The effective front-end noise temperature of the cooling systems will also be lowered from 125K to 35K. This paper will discuss some details of the system design of the new 4-8 GHz cooling systems in the Debuncher Ring.
Date: January 1, 1999
Creator: McGinnis, D.
Object Type: Report
System: The UNT Digital Library
300 Area Disturbance Report (open access)

300 Area Disturbance Report

The objective of this study was to define areas of previous disturbance in the 300 Area of the U.S. Department of Energy (DOE) Hanford Site to eliminate these areas from the cultural resource review process, reduce cultural resource monitoring costs, and allow cultural resource specialists to focus on areas where subsurface disturbance is minimal or nonexistent. Research into available sources suggests that impacts from excavations have been significant wherever the following construction activities have occurred: building basements and pits, waste ponds, burial grounds, trenches, installation of subsurface pipelines, power poles, water hydrants, and well construction. Beyond the areas just mentioned, substrates in the' 300 Area consist of a complex, multidimen- sional mosaic composed of undisturbed stratigraphy, backfill, and disturbed sediments; Four Geographic Information System (GIS) maps were created to display known areas of disturbance in the 300 Area. These maps contain information gleaned from a variety of sources, but the primary sources include the Hanford GIS database system, engineer drawings, and historic maps. In addition to these maps, several assumptions can be made about areas of disturbance in the 300 Area as a result of this study: o o Buried pipelines are not always located where they are mapped. As …
Date: January 7, 1999
Creator: Hale, L. L.; Wright, M. K. & Cadoret, N. A.
Object Type: Report
System: The UNT Digital Library
300 Area Treated Effluent Disposal Facility (TEDF) Hazards Assessment (open access)

300 Area Treated Effluent Disposal Facility (TEDF) Hazards Assessment

This document establishes the technical basis in support of emergency planning activities for the 300 Area Treated Effluent Disposal Facility. The technical basis for project-specific Emergency Action Levels and Emergency Planning Zone is demonstrated.
Date: January 15, 1999
Creator: CAMPBELL, L.R.
Object Type: Report
System: The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 28, No. 14, Ed. 1 Friday, January 22, 1999 (open access)

15th Street News (Midwest City, Okla.), Vol. 28, No. 14, Ed. 1 Friday, January 22, 1999

Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date: January 22, 1999
Creator: Pace, Joshua
Object Type: Newspaper
System: The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 28, No. 15, Ed. 1 Friday, January 29, 1999 (open access)

15th Street News (Midwest City, Okla.), Vol. 28, No. 15, Ed. 1 Friday, January 29, 1999

Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date: January 29, 1999
Creator: Pace, Joshua
Object Type: Newspaper
System: The Gateway to Oklahoma History
[16th annual "Black Music and the Civil Rights Movement Concert" live performance] captions transcript

[16th annual "Black Music and the Civil Rights Movement Concert" live performance]

Video footage from The Black Academy of Arts and Letters recorded during their 16th annual Black Music and the Civil Rights Movement Concert held on January 17th, 1999 at the Meyerson Symphony center. The concert is entitled "A Reflection of the Century... The Music and Its Leaders" and includes various featured vocalists. The concert is split into four sections honoring 1900-1929, 1930-1959, 1960-1989, and 1990-1999.
Date: January 17, 1999
Creator: King, Curtis
Object Type: Video
System: The UNT Digital Library
A0 Photo-Injector: Experiments with Gun A June 97 to December 97 (open access)

A0 Photo-Injector: Experiments with Gun A June 97 to December 97

An RF photo-injector was installed at Fermilab between January and June 97. The photo-injector produced its first beam on 4 June 97. This report provides a brief description of the accelerator and a summary of the experiments carried out through December '97.
Date: January 1, 1999
Creator: Carneiro, J. P.; Carrigan, R. A.; Champion, M. S.; Cianchi, A.; Colby, E. R.; Colestock, P. L. et al.
Object Type: Report
System: The UNT Digital Library
[Abilene City Council Minutes: 1999] (open access)

[Abilene City Council Minutes: 1999]

Ledger containing minutes of the City Council in Abilene, Texas documenting the group's discussions and activities from January 14, 1999 to December 16, 1999.
Date: 1999-01-14/1999-12-16
Creator: Abilene (Tex.)
Object Type: Book
System: The Portal to Texas History
Accident Sequence Precursor Program Large Early Release Frequency Model Development (open access)

Accident Sequence Precursor Program Large Early Release Frequency Model Development

The objectives for the ASP large early release frequency (LERF) model development work is to build a Level 2 containment response model that would capture all of the events necessary to define LERF as outlined in Regulatory Guide 1.174, can be directly interfaced with the existing Level 1 models, is technically correct, can be readily modified to incorporate new information or to represent another plant, and can be executed in SAPHIRE. The ASP LERF models being developed will meet these objectives while providing the NRC with the capability to independently assess the risk impact of plant-specific changes proposed by the utilities that change the nuclear power plants' licensing basis. Together with the ASP Level 1 models, the ASP LERF models provide the NRC with the capability of performing equipment and event assessments to determine their impact on a plant's LERF for internal events during power operation. In addition, the ASP LERF models are capable of being updated to reflect changes in information regarding the system operations and phenomenological events, and of being updated to assess the potential for early fatalities for each LERF sequence. As the ASP Level 1 models evolve to include more analysis capabilities, the LERF models will …
Date: January 4, 1999
Creator: Brownson, Douglas A.; Brown, Thomas D.; Duran, Felicia A.; Gregory, Julie J. & Rodrick, Edward G.
Object Type: Article
System: The UNT Digital Library
Accurate Method for Determining Adhesion of Cantilever Beams (open access)

Accurate Method for Determining Adhesion of Cantilever Beams

Using surface micromachined samples, we demonstrate the accurate measurement of cantilever beam adhesion by using test structures which are adhered over long attachment lengths. We show that this configuration has a deep energy well, such that a fracture equilibrium is easily reached. When compared to the commonly used method of determining the shortest attached beam, the present method is much less sensitive to variations in surface topography or to details of capillary drying.
Date: January 8, 1999
Creator: Michalske, T. A. & De Boer, M. P.
Object Type: Article
System: The UNT Digital Library
Achieving Finite Element Mesh Quality via Optimization of the Jacobian Matrix Norm and Associated Quantities, Part 1 - A Framework for Surface Mesh Optimization (open access)

Achieving Finite Element Mesh Quality via Optimization of the Jacobian Matrix Norm and Associated Quantities, Part 1 - A Framework for Surface Mesh Optimization

Structured mesh quality optimization methods are extended to optimization of unstructured triangular, quadrilateral, and mixed finite element meshes. N"ew interpretations of well-known nodally-bssed objective functions are made possible using matrices and matrix norms. The matrix perspective also suggests several new objective functions. Particularly significant is the interpretation of the Oddy metric and the Smoothness objective functions in terms of the condition number of the metric tensor and Jacobian matrix, respectively. Objective functions are grouped according to dimensionality to form weighted combinations. A simple unconstrained local optimum is computed using a modiiied N-ewton iteration. The optimization approach was implemented in the CUBIT mesh generation code and tested on several problems. Results were compared against several standard element-based quaIity measures to demonstrate that good mesh quality can be achieved with nodally-based objective functions.
Date: January 18, 1999
Creator: Knupp, P.M.
Object Type: Article
System: The UNT Digital Library
Advanced 3D Sensing and Visualization System for Unattended Monitoring (open access)

Advanced 3D Sensing and Visualization System for Unattended Monitoring

The purpose of this project was to create a reliable, 3D sensing and visualization system for unattended monitoring. The system provides benefits for several of Sandia's initiatives including nonproliferation, treaty verification, national security and critical infrastructure surety. The robust qualities of the system make it suitable for both interior and exterior monitoring applications. The 3D sensing system combines two existing sensor technologies in a new way to continuously maintain accurate 3D models of both static and dynamic components of monitored areas (e.g., portions of buildings, roads, and secured perimeters in addition to real-time estimates of the shape, location, and motion of humans and moving objects). A key strength of this system is the ability to monitor simultaneous activities on a continuous basis, such as several humans working independently within a controlled workspace, while also detecting unauthorized entry into the workspace. Data from the sensing system is used to identi~ activities or conditions that can signi~ potential surety (safety, security, and reliability) threats. The system could alert a security operator of potential threats or could be used to cue other detection, inspection or warning systems. An interactive, Web-based, 3D visualization capability was also developed using the Virtual Reality Modeling Language (VRML). …
Date: January 1, 1999
Creator: Carlson, Jeffrey J.; Little, Charles Q. & Nelson, Cynthia L.
Object Type: Report
System: The UNT Digital Library
AN ADVANCED CONTROL SYSTEM FOR FINE COAL FLOTATION (open access)

AN ADVANCED CONTROL SYSTEM FOR FINE COAL FLOTATION

A model-based flotation control scheme is being implemented to achieve optimal performance in the handling and treatment of fine coal. The control scheme monitors flotation performance through on-line analysis of tailings ash content. Then, based on an on-line estimate of incremental ash, the pulp level is adjusted using a model-based control algorithm to compensate for feed variations and other process disturbances. Recent developments in sensor technology are being applied for on-line determination of slurry ash content. During the eleventh quarter of this project, Task 7 (Operation and Testing) was nearly completed through the efforts of J.A. Herbst and Associates, Virginia Tech, and Pittston Coal Company. As a result of this work, a model-based control system has now been installed which can predict incremental ash based on tailings ash content and general plant data, and adjust pulp level accordingly to maintain a target incremental ash. The system has gone through a shake-down period, training has been carried out for plant operators, and the bulk of the control logic testing has been completed with the results of these tests awaiting analysis under Task 8 (System Evaluation). The flotation model has been shown to predict incremental ash quite successfully, implying that this approach …
Date: January 11, 1999
Creator: Luttrell, G. H. & Adel, G. T.
Object Type: Report
System: The UNT Digital Library
ADVANCED EMISSIONS CONTROL DEVELOPMENT PROGRAM (open access)

ADVANCED EMISSIONS CONTROL DEVELOPMENT PROGRAM

The objective of this project is to develop practical strategies and systems for the simultaneous control of SO{sub 2}, NO{sub x}, particulate matter, and air toxics emissions from coal-fired boilers in such a way as to keep coal economically and environmentally competitive as a utility boiler fuel. Of particular interest is the control of air toxics emissions through the cost-effective use of conventional flue gas clean-up equipment such as electrostatic precipitators (ESP's), fabric filters (baghouses), and SO{sub 2} removal systems such as wet scrubbers and various clean coal technologies. This objective will be achieved through extensive development testing in the state-of-the art, 10 MW{sub e} equivalent, Clean Environment Development Facility (CEDF). The project has extended the capabilities of the CEDF to facilitate air toxics emissions control development work on backend flue gas cleanup equipment. Specifically, an ESP, a baghouse, and a wet scrubber for SO{sub 2} (and air toxics) control were added--all designed to yield air toxics emissions data under controlled conditions, and with proven predictability to commercial systems. A schematic of the CEDF and the project test equipment is shown in Figure 1. The specific objectives of the project are to: (1) Measure and understand production and partitioning of …
Date: January 1, 1999
Creator: Holmes, M.J.
Object Type: Report
System: The UNT Digital Library
Advanced Gas Turbine Systems Research, Technical Quarterly Progress Report. October 1, 1998--December 31, 1998 (open access)

Advanced Gas Turbine Systems Research, Technical Quarterly Progress Report. October 1, 1998--December 31, 1998

Major accomplishments during this reporting period by the Advanced Gas Turbine Systems Research (AGTSR) are: AGTSR submitted FY99 program continuation request to DOE-FETC for $4M; AGTSR submitted program and workshop Formation to the Collaborative Advanced Gas Turbine (CAGT) initiative; AGTSR distributed research accomplishment summaries to DOE-FETC in the areas of combustion, aero-heat transfer, and materials; AGTSR reviewed and cleared research papers with the IRB from Arizona State, Cornell, Wisconsin, Minnesota, Pittsburgh, Clemson, Texas and Georgia Tech; AGTSR prepared background material for DOE-FETC on three technology workshops for distribution at the DOE-ATS conference in Washington, DC; AGTSR coordinated two recommendations for reputable firms to conduct an economic impact analysis in support of new DOE gas turbine initiatives; AGTSR released letters announcing the short-list winners/non-winners from the 98RFP solicitation AGTSR updated fact sheet for 1999 and announced four upcoming workshops via the SCIES web page AGTSR distributed formation to EPRI on research successes, active university projects, and workshop offerings in 1999 AGTSR continued to conduct telephone debriefings to non-winning PI's born the 98RFP solicitation AGTSR distributed completed quarterly progress report assessments to the IRB experts in the various technology areas AGTSR provided Formation to GE-Evandale on the active combustion control research at …
Date: January 19, 1999
Creator: unknown
Object Type: Report
System: The UNT Digital Library
[Advanced information technologies for financial services industry]. Final report (open access)

[Advanced information technologies for financial services industry]. Final report

The project scope is to develop an advanced user interface utilizing speech and/or handwriting recognition technology that will improve the accuracy and speed of recording transactions in the dynamic environment of a foreign exchange (FX) trading floor. The project`s desired result is to improve the base technology for trader`s workstations on FX trading floors. Improved workstation effectiveness will allow vast amounts of complex information and events to be presented and analyzed, thus increasing the volume of money and other assets to be exchanged at an accelerated rate. The project scope is to develop and demonstrate technologies that advance interbank check imaging and paper check truncation. The following describes the tasks to be completed: (1) Identify the economics value case, the legal and regulatory issues, the business practices that are affected, and the effects upon settlement. (2) Familiarization with existing imaging technology. Develop requirements for image quality, security, and interoperability. Adapt existing technologies to meet requirements. (3) Define requirements for the imaging laboratory and design its architecture. Integrate and test technology from task 2 with equipment in the laboratory. (4) Develop and/or integrate and test remaining components; includes security, storage, and communications. (5) Build a prototype system and test in a …
Date: January 1, 1999
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Advanced Processing of CdTe- and CuInxGa1-xSe2-Based Solar Cells: Final Report: 18 April 1995 - 31 May 1998 (open access)

Advanced Processing of CdTe- and CuInxGa1-xSe2-Based Solar Cells: Final Report: 18 April 1995 - 31 May 1998

This report summarizes work performed by the University of South Florida Department of Electrical Engineering under this subcontract. The Cadmium telluride(CdTe) portion of this project deals with the development of high-efficiency thin-filmed CdTe solar cells using fabrication techniques that are suitable for manufacturing environments.
Date: January 13, 1999
Creator: Morel, D. L.; Ferekides, C. S.; Bhatt, R.; Jayapalan, A.; Komin, V.; Lin, H. et al.
Object Type: Report
System: The UNT Digital Library
Advanced research workshop: nuclear materials safety (open access)

Advanced research workshop: nuclear materials safety

The Advanced Research Workshop (ARW) on Nuclear Materials Safety held June 8-10, 1998, in St. Petersburg, Russia, was attended by 27 Russian experts from 14 different Russian organizations, seven European experts from six different organizations, and 14 U.S. experts from seven different organizations. The ARW was conducted at the State Education Center (SEC), a former Minatom nuclear training center in St. Petersburg. Thirty-three technical presentations were made using simultaneous translations. These presentations are reprinted in this volume as a formal ARW Proceedings in the NATO Science Series. The representative technical papers contained here cover nuclear material safety topics on the storage and disposition of excess plutonium and high enriched uranium (HEU) fissile materials, including vitrification, mixed oxide (MOX) fuel fabrication, plutonium ceramics, reprocessing, geologic disposal, transportation, and Russian regulatory processes. This ARW completed discussions by experts of the nuclear materials safety topics that were not covered in the previous, companion ARW on Nuclear Materials Safety held in Amarillo, Texas, in March 1997. These two workshops, when viewed together as a set, have addressed most nuclear material aspects of the storage and disposition operations required for excess HEU and plutonium. As a result, specific experts in nuclear materials safety have been …
Date: January 28, 1999
Creator: Jardine, L J & Moshkov, M M
Object Type: Article
System: The UNT Digital Library
Advanced thermally stable jet fuels (open access)

Advanced thermally stable jet fuels

The Pennsylvania State University program in advanced thermally stable coal-based jet fuels has five broad objectives: (1) Development of mechanisms of degradation and solids formation; (2) Quantitative measurement of growth of sub-micrometer and micrometer-sized particles suspended in fuels during thermal stressing; (3) Characterization of carbonaceous deposits by various instrumental and microscopic methods; (4) Elucidation of the role of additives in retarding the formation of carbonaceous solids; (5) Assessment of the potential of production of high yields of cycloalkanes by direct liquefaction of coal. Future high-Mach aircraft will place severe thermal demands on jet fuels, requiring the development of novel, hybrid fuel mixtures capable of withstanding temperatures in the range of 400--500 C. In the new aircraft, jet fuel will serve as both an energy source and a heat sink for cooling the airframe, engine, and system components. The ultimate development of such advanced fuels requires a thorough understanding of the thermal decomposition behavior of jet fuels under supercritical conditions. Considering that jet fuels consist of hundreds of compounds, this task must begin with a study of the thermal degradation behavior of select model compounds under supercritical conditions. The research performed by The Pennsylvania State University was focused on five major …
Date: January 31, 1999
Creator: Schobert, H.H.
Object Type: Report
System: The UNT Digital Library
The Age, Volume 22, Number 1, January 1999 (open access)

The Age, Volume 22, Number 1, January 1999

Monthly publication containing information related to Chambers County, Texas, including current events of the Chambers County Historical Commission, the Wallisville Heritage Park, and the Chambers County historical and genealogical societies; reprinted newspaper articles about county events and citizens; and historical news and records.
Date: January 1999
Creator: Wallisville Heritage Park (Organization)
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Air Quality and Vehicle Emission Standards: An Overview of the National Low Emission Vehicle Program and Related Issues (open access)

Air Quality and Vehicle Emission Standards: An Overview of the National Low Emission Vehicle Program and Related Issues

This report provides background information on federal emission standards for motor vehicles under the Clean Air Act and stricter standards originally developed to address the severity of air quality problems in California, explains the low emission standards and flexible compliance mechanisms to which states and manufacturers have voluntarily agreed under the National Low Emission Vehicle (LEV) Program, discusses the Environmental Protection Agency's (EPA) estimates of the program's air quality benefits and costs, and examines regulatory issues related to its implementation including sulfur levels in gasoline and the relative stringency of emission standards for light trucks.
Date: January 4, 1999
Creator: Bearden, David M.
Object Type: Report
System: The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 123, No. 32, Ed. 1 Thursday, January 7, 1999 (open access)

The Albany News (Albany, Tex.), Vol. 123, No. 32, Ed. 1 Thursday, January 7, 1999

Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date: January 7, 1999
Creator: Lucas, Donnie A.
Object Type: Newspaper
System: The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 123, No. 33, Ed. 1 Thursday, January 14, 1999 (open access)

The Albany News (Albany, Tex.), Vol. 123, No. 33, Ed. 1 Thursday, January 14, 1999

Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date: January 14, 1999
Creator: Lucas, Donnie A.
Object Type: Newspaper
System: The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 123, No. 34, Ed. 1 Thursday, January 21, 1999 (open access)

The Albany News (Albany, Tex.), Vol. 123, No. 34, Ed. 1 Thursday, January 21, 1999

Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date: January 21, 1999
Creator: Lucas, Donnie A.
Object Type: Newspaper
System: The Portal to Texas History