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Gas-Cooled Reactor Project Quarterly Progress Report: June 1960

Description: Report documenting ongoing research and developments at the Oak Ridge National Laboratory's Gas-Cooled Reactor Project. Design Investigations: The effects on the power distribuestablished. A mathematical model was developed for studying shifting of the coolant stream as it moves along a rod in order to predict the temperatures of the parallel streams as they progress through the reactor. A fuelelement life code developed for computing the internal temperature structure, the amount of fission gas released, the internal pressure, the cladding strain when the internal pressure exceeds the coolant pressure, and the creep damage was used for comparing top-loading and inventedloading fuel programs for the EGCR. A statistical method was developed for estimating the probability that the hot spot on the EGCR fuel element will exceed a given temperature. A method of cooling the EGCR control rods was developed that will minimize diversion of coolant flow through leakage paths between graphite blocks. A preliminary design of a control rod cooled by this method was developed. Means for reducing the thermal stresses in the top head nozzles of the EGCR pressure vessel were studied. The stresses in the graphite sleeves of the EGCR fuel elements were calculated, and the maximum stress was found to be within the allowable limit. A study was made of the thermal stresses in the EGCR pressure-vessel support skirt, and a satisfactory design was developed. Procedures for removing ruthenium and cerium contamination from steel were outlined and incorporated in procedures for decontaminating the EGCR charge and service machines. Experimental information was obtained on the thermal characteristics of the specified EGCR fuel cluster. The effect of relative orientation of adjacent clusters on the heattransfer distribution in the downstream element was studied by means of mass-removal measurements on naphthalene-coated reds. Velocity distributions in the downstream element of two adjacent EGCR-type clusters ...
Date: August 22, 1960
Creator: Oak Ridge National Laboratory
Partner: UNT Libraries Government Documents Department

Restricting Invariants and Arrangements of Finite Complex Reflection Groups

Description: Suppose that G is a finite, unitary reflection group acting on a complex vector space V and X is a subspace of V. Define N to be the setwise stabilizer of X in G, Z to be the pointwise stabilizer, and C=N/Z. Then restriction defines a homomorphism from the algebra of G-invariant polynomial functions on V to the algebra of C-invariant functions on X. In my thesis, I extend earlier work by Douglass and Röhrle for Coxeter groups to the case where G is a complex reflection group of type G(r,p,n) in the notation of Shephard and Todd and X is in the lattice of the reflection arrangement of G. The main result characterizes when the restriction mapping is surjective in terms of the exponents of G and C and their reflection arrangements.
Date: August 2015
Creator: Berardinelli, Angela
Partner: UNT Libraries

Supporting Mathematics Understanding Through Funds of Knowledge

Description: Parents are often criticized for the types of roles they play in their children’s education. Rather than assuming parents do not contribute to their children’s learning, this study identified the various ways Hispanic parents support mathematics learning in the home. Using a funds of knowledge lens, the history, practices, and experiences of families that contributed to their children’s mathematics understanding was explored. The purpose of this study was to identify the unique funds of knowledge among three Hispanic families living in the same city, specifically, how parents supported their children’s mathematics learning through funds of knowledge. Five Hispanic parents from three households participated in a series of three home interviews. The semi--‐structured interviews addressed family, school, and educational history of the parents, routines of the household, and perceived roles parents played in their children’s mathematics learning. Participants contributed to their children’s mathematics learning through various funds of knowledge including time management, music, sports, construction, shopping, and cooking. Participating parents shared knowledge with their children through questioning and discussion, providing experiences, and promoting practice. In this study, participants valued education and supported their children’s mathematics learning at home and school activities. This study contributes to the existing funds of knowledge research by expanding the work on how Hispanic parents support mathematics learning.
Date: August 2015
Creator: Williams, Julie J.
Partner: UNT Libraries

[News Clip: Free college access]

Description: B-roll footage from the NBC 5 television station in Fort Worth, Texas, to accompany a news story about free college access. This story aired at 5 P.M.
Date: June 29, 2009
Creator: NBC 5 (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections

[News Clip: Free college access]

Description: B-roll footage from the NBC 5 television station in Fort Worth, Texas, covering a news story about free college access. This story aired at 4 P.M.
Date: June 29, 2009
Creator: NBC 5 (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections

[News Clip: Free college access]

Description: B-roll footage from the NBC 5 television station in Fort Worth, Texas, covering a news story about free college access. This story aired at 6 P.M.
Date: June 29, 2009
Creator: NBC 5 (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections

[News Clip: FW SATs]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 6 P.M.
Date: September 27, 1988
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections

[Who's Who in Mathematics: Bill Townsend, 1943]

Description: Photograph of Bill Townsend, the Who's Who in Mathematics for the Yucca yearbook in 1943. In the image Townsend is writing or solving an equation on a chalkboard inside a classroom. "Who's Who" was an honor to students who demonstrated collegiate leadership through the balance of both academic excellence and extracurricular involvement in their personal field.
Date: 1943
Partner: UNT Libraries Special Collections

National Mathematics Advisory Panel

Description: The U.S. Department of Education, in partnership with the Conference Board of Mathematical Sciences, hosted the first National Math Panel Forum on October 6-7, 2008. This page documents the Forum activities, which brought together various organizations and other interested parties.
Date: 2008
Creator: National Mathematics Advisory Panel
Partner: UNT Libraries Government Documents Department

[News Clip: Sporting Chance]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 10 pm.
Date: November 28, 1986
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections

The Effectiveness of a Guided Discovery Method of Teaching in a College Mathematics Course for Non-Mathematics and Non-Science Majors

Description: The purpose of this study was to ascertain the value, as determined by student achievement, of using a discovery method of teaching mathematics in a college freshman mathematics course for non-mathematics and non-science majors.
Date: January 1969
Creator: Reimer, Dennis D., 1940-
Partner: UNT Libraries

A Classification of Regular Planar Graphs

Description: The purpose of this paper is the investigation and classification of regular planar graphs. The motive behind this investigation was a desire to better understand those properties which allow a graph to be represented in the plane in such a manner that no two edges cross except perhaps at vertices.
Date: December 1972
Creator: McCalla, Linda F.
Partner: UNT Libraries

Doctoral Programs in Mathematics and Education as Related to Instructional Needs of Junior Colleges and Four Year Colleges

Description: The problem of this study was to analyze doctoral programs in mathematics and education for the preparation of teachers of undergraduate mathematics. The purpose of the study was to determine (1) the need for such programs, (2) the attitude of college and university officials toward them, (3) the composition of present offerings and (4) recommendations to the future course their development should take.
Date: June 1967
Creator: Hamilton, William Wingo
Partner: UNT Libraries