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8:1 thermal cavity problem
We present results for the 8:1 thermal cavity problem using FIDAP on 3 meshes--each using 3 elements. A brief summary of related results is also included. This contribution comes via the rather versatile and general commercial finite element code, FIDAP. This code still offers the user a wide selection with respect to element choices, statement of governing equations, (e.g., advective form, divergence form) implicit time integrators (variable-step or fixed step, first-order or second-order), and solution techniques for both the nonlinear and linear sets of equations. We have tested quite a number of these variations on this problem; here we report on an interesting subset and will present the remainder at the conference.
Date:
October 11, 2000
Creator:
Gresho, P M & Sutton, S
Object Type:
Article
System:
The UNT Digital Library
10th Workshop on Crystalline Silicon Solar Cell Materials and Processes: Extended Abstracts and Papers from the Workshop, Copper Mountain Resort; August 14-16, 2000
The 10th Workshop provided a forum for an informal exchange of technical and scientific information between international researchers in the photovoltaic and non-photovoltaic fields. Discussions included the various aspects of impurities and defects in silicon-their properties, the dynamics during device processing, and their application for developing low-cost processes for manufacturing high-efficiency silicon solar cells. Sessions and panel discussions also reviewed thin-film crystalline-silicon PV, advanced cell structures, new processes and process characterization techniques, and future manufacturing requirements to meet the ambitious expansion goals described in the recently released US PV Industry Roadmap. The Workshop also provided an excellent opportunity for researchers in private industry and at universities to recognize a mutual need for future collaborative research. The three-day workshop consisted of presentations by invited speakers, followed by discussion sessions. In addition, there was two poster sessions presenting the latest research and development results. The subjects discussed included: solar cell processing, light-induced degradation, gettering and passivation, crystalline silicon growth, thin-film silicon solar cells, and impurities and defects. Two special sessions featured at this workshop: advanced metallization and interconnections, and characterization methods.
Date:
August 11, 2000
Creator:
Sopori, B. L.; Gee, J.; Kalejs, J.; Saitoh, R.; Stavola, M.; Swanson, D. et al.
Object Type:
Article
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 29, No. 17, Ed. 1 Friday, February 11, 2000
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
February 11, 2000
Creator:
Steele, Janet
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
2000 Annual Progress Report for Fuels for Advanced CIDI Engines and Fuel Cells
The Department of Energy's Office of Transportation Technologies Fiscal Year (FY) 2000 Annual Progress Report for the Fuels for Advanced CIDI Engines and Fuel Cells Program highlights progress achieved during FY 2000 and comprises 22 summaries of industry and National Laboratory projects that were conducted. The report provides an overview of the exciting work being conducted to tackle the tough technical challenges associated with developing clean burning fuels that will enable meeting the performance goals of the Emission Control R and D for Advanced CIDI Engines and the Transportation Fuel Cell Power Systems Programs. The summaries cover the effects of CIDI engine emissions and fuel cell power system performance, the effects of lubricants on engine emissions, the effects of fuel and consumed lubricants on exhaust emission control devices and the health and safety, materials compatibility, and economics of advanced petroleum-based fuels.
Date:
December 11, 2000
Creator:
Chalk, S.
Object Type:
Report
System:
The UNT Digital Library
2000 Census: Status of Nonresponse Follow-up and Key Operations
Testimony issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed the progress of the nonresponse follow-up operation of the 2000 Census, focusing on the: (1) response rate and its impact on the nonresponse follow-up workload; (2) Bureau of the Census' ability to complete nonresponse follow-up on schedule while maintaining data quality; (3) Bureau's efforts to redeliver questionnaires initially found to be undeliverable; and (4) status of the Bureau's data capture operations."
Date:
May 11, 2000
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
Acceptance Test Procedure for New Pumping Instrumentation and Control Skid R
This Acceptance Test Procedure (ATP) provides for the inspection and testing of the new Pumping Instrumentation and Control (PIC) skid designed as ''R''. The ATP will be performed after the construction of the PIC skid in the fabrication shop.
Date:
May 11, 2000
Creator:
Koch, M. R.
Object Type:
Report
System:
The UNT Digital Library
An Adaptive B-Spline Method for Low-order Image Reconstruction Problems - Final Report - 09/24/1997 - 09/24/2000
A common problem in signal processing is to estimate the structure of an object from noisy measurements linearly related to the desired image. These problems are broadly known as inverse problems. A key feature which complicates the solution to such problems is their ill-posedness. That is, small perturbations in the data arising e.g. from noise can and do lead to severe, non-physical artifacts in the recovered image. The process of stabilizing these problems is known as regularization of which Tikhonov regularization is one of the most common. While this approach leads to a simple linear least squares problem to solve for generating the reconstruction, it has the unfortunate side effect of producing smooth images thereby obscuring important features such as edges. Therefore, over the past decade there has been much work in the development of edge-preserving regularizers. This technique leads to image estimates in which the important features are retained, but computationally the y require the solution of a nonlinear least squares problem, a daunting task in many practical multi-dimensional applications. In this thesis we explore low-order models for reducing the complexity of the re-construction process. Specifically, B-Splines are used to approximate the object. If a ''proper'' collection B-Splines are …
Date:
April 11, 2000
Creator:
Li, Xin; Miller, Eric L.; Rappaport, Carey & Silevich, Michael
Object Type:
Report
System:
The UNT Digital Library
The Advanced Petroleum-Based Fuels Program DECSE and APBF Overview
The following topics are summarized: Role of fuel blends in controlling engine-out emissions; Effect of fuels and lubricants on emission control devices; and Effect of fuels and lubricants on vehicle emissions and operations.
Date:
April 11, 2000
Creator:
unknown
Object Type:
Article
System:
The UNT Digital Library
Advanced reservoir characterization and evaluation of CO{sub 2} gravity drainage in the naturally fractured Spraberry Trend Area, Class III
The overall goal of this project was to assess the economic feasibility of CO{sub 2} flooding the naturally fractured Spraberry Trend Area in West Texas. This objective was accomplished by conducting research in four areas: (1) extensive characterization of the reservoirs, (2) experimental studies of crude oil/brine/rock (COBR) interaction in the reservoirs, (3) analytical and numerical simulation of Spraberry reservoirs, and, (4) experimental investigations on CO{sub 2} gravity drainage in Spraberry whole cores. This report provides results of the fourth year of the five-year project for each of the four areas including a status report of field activities leading up to injection of CO{sub 2}.
Date:
April 11, 2000
Creator:
Heckman, Tracy & Schechter, David S.
Object Type:
Report
System:
The UNT Digital Library
Aggregation quenching in thin films of meh-ppv studied by near-field scanning optical microscopy and spectroscopy
Aggregates in thin films of conjugated polymers form excimer states and significantly reduce the photo- and electroluminescence efficiency in devices produced from these materials. We have studied the aggregate formation in thin films of MEH-PPV by near-field scanning optical microscopy and spectroscopy. Local photoluminescence spectroscopy and photo-bleaching experiments have been used to show that thin films of MEH-PPV are homogeneously aggregated and do not form aggregated domains.
Date:
April 11, 2000
Creator:
Huser, T & Yan, M
Object Type:
Article
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 124, No. 50, Ed. 1 Thursday, May 11, 2000
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
May 11, 2000
Creator:
Lucas, Donnie A.
Object Type:
Newspaper
System:
The Portal to Texas History
AlGaAs/InGaAsN/GaAs PnP double heterojunction bipolar transistor
The authors have demonstrated a functional MOCVD-grown AlGaAs/InGaAsN/GaAsPnP DHBT that is lattice matched to GaAs and has a peak current gain ({beta}) of 25. Because of the smaller bandgap (E{sub g}=1.20eV)of In{sub 0.03}Ga{sub 0.97}As{sub 0.99}N{sub 0.01} used for the base layer, this device has a low V{sub ON} of 0.79 V, 0.25 V lower than in a comparable Pnp AlGaAs/GaAs HBT. The BV{sub CEO} is 12 V, consistent with its GaAs collector thickness and doping level.
Date:
January 11, 2000
Creator:
Chang, P. C.; Baca, A. G.; Li, N. Y.; Sharps, P. R.; Hou, H. Q.; Laroche, J. R. et al.
Object Type:
Article
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 100, No. 254, Ed. 1 Tuesday, January 11, 2000
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 11, 2000
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 100, No. 280, Ed. 1 Friday, February 11, 2000
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 11, 2000
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 101, No. 24, Ed. 1 Tuesday, April 11, 2000
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 11, 2000
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 101, No. 50, Ed. 1 Thursday, May 11, 2000
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 11, 2000
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 101, No. 76, Ed. 1 Sunday, June 11, 2000
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 11, 2000
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 101, No. 104, Ed. 1 Tuesday, July 11, 2000
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
July 11, 2000
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 101, No. 131, Ed. 1 Friday, August 11, 2000
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 11, 2000
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 101, No. 156, Ed. 1 Monday, September 11, 2000
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 11, 2000
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 101, No. 182, Ed. 1 Wednesday, October 11, 2000
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 11, 2000
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 101, No. 234, Ed. 1 Monday, December 11, 2000
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 11, 2000
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, October 11, 2000
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
October 11, 2000
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Alvin Sun-Advertiser (Alvin, Tex.), Vol. 109, No. 47, Ed. 1 Sunday, June 11, 2000
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
June 11, 2000
Creator:
Schwind, Jim & Holton, Kathleen
Object Type:
Newspaper
System:
The Portal to Texas History