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EQUIPOISE-3: A TWO DIMENSIONAL, TWO-GROUP, NEUTRON DIFFUSION CODE FOR THE IBM-7090 COMPUTER
EQUIPOISE-3 is an IBM-7090 FORTRAN programmed code for the solution of two-group, two-dimensional, neutron diffusion equations. A maximum of 2l00 mesh points may be used, and the code will solve problems in either rectangular or cylindrical geometry. Logarithmic derivative boundary conditions are allowed, and removal of neutrons from both groups is permitted. Adjoint fluxes with the associated fluxadjoint flux regional integrals may be calculated automatically if desired. A constant buckling, group-dependent buckling, or region-dependent buckling may be specified for rectangular geometry. This program is intended to fill the need for a rapid two-dimensional calculation suitable for survey calculations. During the iterative part of the computations, all operations are carried out in the core memory. The magnetic tape memory is used only for input, output, and program storage. The running time for a 1000-point problem requiring 100 iterations would be about 3 min.(auth)
Date:
February 21, 1962
Creator:
Fowler, T.B. & Tobias, M.L.
Object Type:
Report
System:
The UNT Digital Library
[Letter from Pam Stephens to Cyndi Riddle, February 21, 1997]
Photocopy of a letter from Pam Stephens, graduate research assistant, North Texas Institute for Educators on the Visual Arts, to Cyndi Riddle, Art Specialist at North Hi Mount Elementary. The letter is in regards to the idea of teacher-presenters at Texas Art Education Association meetings, believing it is an excellent suggestion. Stephens has already contacted Linda Alford from Plano and Jan Schronk from Hurst-Euless-Bedford ISD, about commitments to their teachers and helping to host. Included in the letter are suggestions about helping cater to presenter needs.
Date:
February 21, 1997
Creator:
Geiger-Stephens, Pamela K.
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Pam Stephens to Jan Schronk, February 21, 1997]
Photocopy of a letter from Pam Stephens, Project Coordinator of North Texas Institute for Educators on the Visual Arts, to Jan Schronk, Coordinator of Fine Arts for Hurst-Euless-Bedford ISD. Reminding Schronk that the Teaching Art Education Association conference will be held in Fort Worth in November. Nancy Walkup Reynolds, Beverly Fletcher and Stephens are putting the conference together and contacting NTIEVA consortium districts to ask that art specialists attend and consider making presentations and serving as hosts at the event. To attend the conference as a participant, the teacher must be a member of TAEA, enclosed in the letter are membership forms. Stephens would like this event to be hospitable to visiting educators and would like to visit Schronk's next art meeting to beg her case before the teachers.
Date:
February 21, 1997
Creator:
Gieger-Stephens, Pamela K.
Object Type:
Letter
System:
The UNT Digital Library
[News Clip: Brady - Garland]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
February 21, 1994, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
Elimination of electromagnetic radiation in plasma simulation: the Darwin or magnetoinductive approximation
For many astrophysical and most magnetic fusion applications, the purely electromagnetic modes generated by real as well as simulation ''plasma'' fluctuations are a source of high frequency radiation that is often irrelevant to the physics of interest. Unfortunately, a numerical CFL stability limit prevents either making c infinite or deltat large while using the usual explicit Maxwell's equations for the fields. A modification of Maxwell's equations, which provides implicitly the field components, circumvents this problem. The solution is to neglect retardation effects so that the electromagnetic propagation speed is effectively infinite. The purely electromagnetic modes in this limit evolve ''instantly'' to a time-asymptotic configuration about the macroscopic plasma configuration at each new time level. The Darwin or magnetoinductive approximation effectively provides infinite propagation speeds for purely electromagnetic modes by converting Maxwell's equations from hyperbolic to elliptic in character. In practice, this is accomplished by neglecting the solenoidal part of the displacement current. The elimination of the CFL time step constraint more than offsets the substantially more complicated field solution that is required. The details of a numerical implementation of this model will be presented. Numerical examples will be given and extentions of the Darwin field solution to other plasma models …
Date:
February 21, 1985
Creator:
Hewett, D.W.
Object Type:
Article
System:
The UNT Digital Library
[News Clip: Homeless]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
February 21, 1994, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
Chemical Technology Division, Chemical Development Section C Progress Report for October-December 1961
Recovery of Th (and U) from Granitic Rock. Recovery of Th by acid leaching ten addltlonal granite samples (36 to 82 ppm Th) from the Conway formation in N. H. ranged from about 50 to 85%, and averaged about 70%, Study of the effect of grind size on the recovery of Th from Conway and Plkes Peak granites showed no significant differences in the range minus 20 to minus 200 mesh. The Th concentration in a sized Conway granite sample was found to be much greater in the fine than in the coarse fractions, whereas Pikes Peak granite showed only slight Th enrichment in the finer fractions. U recoveries in acid leaching of four different granite samples were not improved by adding an oxidant. Collection and Analysis of Granite Samples. A field survey of the Conway granite formations in N. H. was made. Preliminary analysis of the data indicates that the accessible surface of the Conway granite averages at least 40 ppm Th. Collection and Analysis of Lateritic Soils. The Th concentration ranged 5 to 16 ppm in twenty-two samples of sub-lateritic soil from Miss., Ala., Ga., and Va. Final Cycle Pu Recovery by Amine Extraction. In continued batch countercurrent …
Date:
February 21, 1962
Creator:
Brown, K.B.
Object Type:
Report
System:
The UNT Digital Library
The Mangum Star. (Mangum, Okla. Terr.), Vol. 19, No. 34, Ed. 1 Thursday, February 21, 1907
Weekly newspaper from Mangum, Oklahoma that includes local, territorial, and national news along with advertising.
Date:
February 21, 1907
Creator:
Echols, R. C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Oklahoma State Register (Guthrie, Okla.), Vol. 27, No. 41, Ed. 1 Thursday, February 21, 1918
Weekly newspaper from Guthrie, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 21, 1918
Creator:
Golobie, John
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Oklahoma Leader (Guthrie, Okla.), Vol. 28, No. 8, Ed. 1 Thursday, February 21, 1918
Weekly newspaper from Guthrie, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 21, 1918
Creator:
Niblack, Leslie G.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Mangum Star (Mangum, Okla.), Vol. 30, No. 36, Ed. 1 Thursday, February 21, 1918
Weekly newspaper from Mangum, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 21, 1918
Creator:
Jessee, Elmer V.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
EU-U.S. Economic Ties: Framework, Scope, and Magnitude
This report provides background information and analysis of the U.S.-EU (European Union) economic relationship related to the costs and benefits of closer U.S. economic ties with the EU. It examines the economic and political framework of the relationship and the scope and magnitude of the ties based on data from various sources. In addition, the report analyzes the implications these factors have for U.S. economic policy toward the EU.
Date:
February 21, 2014
Creator:
Cooper, William H.
Object Type:
Report
System:
The UNT Digital Library
Critical Infrastructures: Background, Policy, and Implementation
This report discusses the evolution of a national critical infrastructure policy and the institutional structures established to implement it. Critical infrastructure includes physical assets used to produce and distribute services such as electricity (including the power plants and electric grid), communications, and computers. The report highlights five issues of Congressional concern: identifying critical assets; assessing vulnerabilities and risks; allocating resources; information sharing; and regulation.
Date:
February 21, 2014
Creator:
Moteff, John D.
Object Type:
Report
System:
The UNT Digital Library
Greer Weekly Sun. (Mangum, Okla.), Vol. 5, No. 36, Ed. 1 Thursday, February 21, 1901
Weekly newspaper from Mangum, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date:
February 21, 1901
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Guthrie Daily Star (Guthrie, Okla.), Vol. 8, No. 298, Ed. 1 Wednesday, February 21, 1912
Daily newspaper from Guthrie, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 21, 1912
Creator:
Hornaday, W. H.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The New State. (Haileyville, Okla.), Vol. 3, No. 50, Ed. 1 Friday, February 21, 1908
Weekly newspaper from Haileyville, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 21, 1908
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Kiowa Sentinel (Kiowa, Indian Terr.), Vol. 4, No. 6, Ed. 1 Thursday, February 21, 1907
Weekly newspaper from Kiowa, Indian Territory that includes local, territorial, and national news along with advertising.
Date:
February 21, 1907
Creator:
Vernon, John C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Canadian Enterprise (Canadian, Okla.), Vol. 4, No. 22, Ed. 1 Friday, February 21, 1908
Weekly newspaper from Canadian, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 21, 1908
Creator:
Williams, B. W.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Weekly News (Altus, Okla.), Vol. 18, No. 52, Ed. 1 Thursday, February 21, 1918
Weekly newspaper from Altus, Oklahoma that includes local, county, state, and national news along with advertising.
Date:
February 21, 1918
Creator:
Orr, J. P.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Guymon Herald. (Guymon, Okla.), Vol. 27, No. 51, Ed. 1 Thursday, February 21, 1918
Weekly newspaper from Guymon, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 21, 1918
Creator:
Denny, J. Q.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Symmetry-induced intermittency in a stochastic reflexive model
Article on symmetry-induced intermittency in a stochastic reflexive model.
Date:
February 21, 2012
Creator:
Palatella, Luigi & Grigolini, Paolo
Object Type:
Article
System:
The UNT Digital Library
Cushing Independent. (Cushing, Okla.), Vol. 6, No. 11, Ed. 1 Thursday, February 21, 1907
Weekly newspaper from Cushing, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date:
February 21, 1907
Creator:
Holland, Al. H.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crowder City Guardian (Crowder, Oklahoma), Vol. 8, No. 22, Ed. 1 Friday, February 21, 1913
Weekly newspaper from Crowder, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 21, 1913
Creator:
Barrow, A. E.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crowder City Guardian (Crowder, Oklahoma), Vol. 3, No. 11, Ed. 1 Friday, February 21, 1908
Weekly newspaper from Crowder, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 21, 1908
Creator:
Barrow, A. E.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History