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15th Street News (Midwest City, Okla.), Vol. 28, No. 2, Ed. 1 Friday, September 4, 1998
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
September 4, 1998
Creator:
Pace, Joshua
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 28, No. 12, Ed. 1 Friday, December 4, 1998
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
December 4, 1998
Creator:
Pace, Joshua
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
AC losses in Bi-2223 tapes and in the 1-kA transmission line model.
We present here results of our study of the 5-m-long AC transmission tine model with 1 kA current capability at 77 K. Primary attention was paid to the current characteristics and AC losses in individual tapes and in the core of the cable. The losses were measured as a function of AC magnetic field amplitude in various orientations of magnetic field with respect to the plane of the tape and filaments. Hysteresis losses were. close to the losses in the AC regime, meaning that eddy current losses in tapes may be neglected when compared with hysteresis losses. We designed and constructed a 5-m-long model of the AC transmission line using multi filamentary Bi-2223 tapes. The current core of the model contains 120 tapes for the forward line and 120 tapes for the backward line. The AC losses in the current core were substantially greater than those seen in the individual tapes. The reason for this is related to a complex magnetic field distribution inside the current core.
Date:
September 4, 1998
Creator:
Fisher, L. M.
Object Type:
Article
System:
The UNT Digital Library
Adkisson named to DART Board
News release regarding the naming of Terri A. G. Adkisson to the DART Board of Directors.
Date:
November 4, 1998
Creator:
Lyons, Morgan
Object Type:
Text
System:
The Portal to Texas History
ADVANCED HOT GAS FILTER DEVELOPMENT
This report describes the fabrication and testing of continuous fiber ceramic composite (CFCC) based hot gas filters. The fabrication approach utilized a modified filament winding method that combined both continuous and chopped fibers into a novel microstructure. The work was divided into five primary tasks. In the first task, a preliminary set of compositions was fabricated in the form of open end tubes and characterized. The results of this task were used to identify the most promising compositions for sub-scale filter element fabrication and testing. In addition to laboratory measurements of permeability and strength, exposure testing in a coal combustion environment was performed to asses the thermo-chemical stability of the CFCC materials. Four candidate compositions were fabricated into sub-scale filter elements with integral flange and a closed end. Following the 250 hour exposure test in a circulating fluid bed combustor, the retained strength ranged from 70 t 145 percent of the as-fabricated strength. The post-test samples exhibited non-catastrophic failure behavior in contrast to the brittle failure exhibited by monolithic materials. Filter fabrication development continued in a filter improvement and cost reduction task that resulted in an improved fiber architecture, the production of a net shape flange, and an improved low …
Date:
September 4, 1998
Creator:
WAGNER, RICHARD A.
Object Type:
Report
System:
The UNT Digital Library
Advances in fabrication of Ag-clad Bi-2223 superconductors.
Powder-in-tube (PIT) processing was used to fabricate multifilamentary Ag-clad Bi{sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub y} (Bi-2223) superconductors for various electric power applications. Enhancements in the transport current properties of long lengths of multifilament tapes were achieved by increasing the packing density of the precursor powder, improving the mechanical deformation, and adjusting the cooling rate. The dependence of the critical current density on magnetic field and temperature for the optimally processed tapes was measured. J{sub c} was greater than 10{sup 4} (A/cm{sup 2}) at 20 K for magnetic field up to 3 T and parallel to the c-axis which is of interest for use in refrigerator coded magnets. An attempt was made to combine the good alignment of Bi-2223 grains in Ag-sheathed superconducting tapes to obtain high J{sub c} values at high temperature and low field, and good intrinsic pinning of YBa{sub 2}Cu{sub 3}O{sub 7{minus}d} (Y-123) thin film to maintain high J{sub c} values in high fields. A new composite multifilament tape was fabricated such that the central part contained Bi-2223 filaments, with the primary function of conducting the transport current. The central Bi-2223 filaments were surrounded by Y-123 thin film to shield the applied magnetic field and protect the Bi-2223 …
Date:
September 4, 1998
Creator:
Balachandran, U.
Object Type:
Article
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 123, No. 1, Ed. 1 Thursday, June 4, 1998
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
June 4, 1998
Creator:
Lucas, Donnie A.
Object Type:
Newspaper
System:
The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 98, No. 246, Ed. 1 Sunday, January 4, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 4, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 98, No. 273, Ed. 1 Wednesday, February 4, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 4, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 98, No. 296, Ed. 1 Wednesday, March 4, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 4, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 99, No. 44, Ed. 1 Monday, May 4, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 4, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 99, No. 72, Ed. 1 Thursday, June 4, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 4, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 99, No. 122, Ed. 1 Tuesday, August 4, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 4, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 99, No. 148, Ed. 1 Friday, September 4, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 4, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 99, No. 173, Ed. 1 Sunday, October 4, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 4, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 99, No. 201, Ed. 1 Wednesday, November 4, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 4, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 99, No. 227, Ed. 1 Friday, December 4, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 4, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, February 4, 1998
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
February 4, 1998
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, March 4, 1998
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
March 4, 1998
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, November 4, 1998
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
November 4, 1998
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Alvin Sun-Advertiser (Alvin, Tex.), Vol. 107, No. 42, Ed. 1 Sunday, January 4, 1998
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
January 4, 1998
Creator:
Schwind, Jim & Dodson, Doug
Object Type:
Newspaper
System:
The Portal to Texas History
Alvin Sun-Advertiser (Alvin, Tex.), Vol. 108, No. 17, Ed. 1 Sunday, October 4, 1998
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
October 4, 1998
Creator:
Schwind, Jim & Looby, Edward
Object Type:
Newspaper
System:
The Portal to Texas History
The Alvin Sun (Alvin, Tex.), Vol. 107, No. 75, Ed. 1 Monday, May 4, 1998
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
May 4, 1998
Creator:
Schwind, Jim & Dodson, Doug
Object Type:
Newspaper
System:
The Portal to Texas History
Analysis of Decentralized Variable Structure Control for Collective Search by Mobile Robots
This paper presents an analysis of a decentralized coordination strategy for organizing and controlling a team of mobile robots performing collective search. The alpha-beta coordination strategy is a family of collective search algorithms that allow teams of communicating robots to implicitly coordinate their search activities through a division of labor based on self-selected roIes. In an alpha-beta team. alpha agents are motivated to improve their status by exploring new regions of the search space. Beta a~ents are conservative, and reiy on the alpha agents to provide advanced information on favorable regions of the search space. An agent selects its current role dynamically based on its current status value relative to the current status values of the other team members. Status is determined by some function of the agent's sensor readings, and is generally a measurement of source intensity at the agent's current location. Variations on the decision rules determining alpha and beta behavior produce different versions of the algorithm that lead to different global properties. The alpha-beta strategy is based on a simple finite-state machine that implements a form of Variable Structure Control (VSC). The VSC system changes the dynamics of the collective system by abruptly switching at defined states …
Date:
November 4, 1998
Creator:
Feddema, J.; Goldsmith, S. & Robinett, R.
Object Type:
Article
System:
The UNT Digital Library