The advantages and disadvantages of four new high-resolution difference schemes, namely the von Neumann-Richtmyer, Godunovs, MUSCL and Glimms, for mathematically representing physical conditions in compressible gas flows are compared. (LCL)

The experimental solar collector systems at Middlebury College have been modified to permit short time resolution studies of solar collector loop performance. A variety of experiments have been performed to measure the following system properties: (a) collector efficiency, (b) collector response to step changes in insolation, (c) collector response to the introduction of cold inlet water, and (d) pump cycling as a function of control sensor location and set points. Data from these experiments have been supplied to the solar group at Drexel for validation of their analytical collector loop model.

Photograph used for a newspaper owned by the Oklahoma Publishing Company.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Census counter Ella Hawes of Forgan in northwestern Oklahoma makes her appointed rounds helping people complete their census forms as the effort to tabulate the state's population nears termination."

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "The Rev. T. C. Burroughs goes over Biblical passages with George Kingfisher, left, at Chuck & Chris' Tavern in Oklahoma City."

The measures most commonly used to assist decision-makers in evaluating the economic merits of solar energy projects are described and compared. An example is given to illustrate the economic evaluation measures and the results are applied to a solar industrial process heat project. Four widely used economic measures are: net present value, benefit-cost ratio, internal rate of return, and payback period. (MHR)

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The roof is going on this building that will house the Miller-McCalmon Dental Clinic in the 8200 block of S Walker."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Concrete block walls are rising on Oklahoma City's second Red Lobster seafood restaurant at I-240 and Swestern."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "An earthmover works its way to the top of a mound of fill for final paving of Shields from S 23 to S 5."

Daily newspaper from Sulphur Springs, Texas that includes local, state, and national news along with advertising.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Bill Rompf gives pointers to Mary Norwood and Barry Richards. Mary will be competing in a national junior tennis tournament for girls 14 years old and younger in Birmingham, Ala., next week. Barry will compete in a national boys 12-and-under event in Houston. Both are nationally ranked in their divisions."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Marvin Mosher, named new chairman of the Commerce Street Committee, a subdivision of the South Oklahoma City Chamber of Commerce, plans to concentrate on selling the positive points of the area to metropolitan businessmen."

Photograph used for a newspaper owned by the Oklahoma Publishing Company.

Photograph used for a story in the Daily Oklahoman newspaper.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "John Powell and Teena Rozier have scheduled the annual arts festival for Oct. 2,3 and 4 in Kerr Park."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Hosts Rex and Irene Stuckey admire the four color lithograph reproduction of the original painting made for the party invitations."

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Signs - Miscellaneous - Peaches Club & Restaurant (SW 62nd & Western)"

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Teri Cook ponders notice that Hosea Vinyard junior pool has been closed."

Some of the changes since 1970 in procedures for plating on such materials as titanium, molybdenum, silicon, aluminum, and gallium arsenide are summarized. While basic procedures for plating some of these materials were developed as many as 30 to 40 years ago, changes in the end uses of the plated products have necessitated new plating processes. In some cases, vacuum techniques - such as ion bombardment, ion implantation, and vacuum metallization - have been introduced to improve the adhesion of electrodeposits. In other cases, these techniques have been used to deposit materials upon which electrodeposits are required.

The Numerical Data Advisory Board (NDAB) is an advisory body that provides expert overview, on a broad basis, of data needs and data programs as required for the advancement of science and technology. Board members, representing various disciplines, concern themselves with the quality, reliability, availability, accessibility, and dissemination of numerical data in physical, chemical, engineering, and interdisciplinary subjects as well as numeric and non-numeric data that arise in biology and geology. Topics of concern are addressed by the NDAB membership, or by specific, carefully chosen committees and panels established by NDAB in order to include experts appropriate to the subject at hand.

Major accomplishments during the first quarter of the contract period are reported. Small area diode fabrication and analysis has been continued. This technique has further been applied to many RTR ribbons. An optical technique for determination of crystallite orientations has been placed in operation. This technique has many distinct advantages. These are: (1) rapid; (2) can be set-up very inexpensively; (3) well suited for polycrystalline substrates of small grain size; and (4) can easily characterize twins. Accuracies obtained with this technique are about the same as that of the Laue technique. A technique to qualitatively evaluate grain boundary activity in unprocessed substrates has been used and valuable results obtained. Further analysis is being done to use this technique for quantitative evaluation. A major study of G.B. orientation effects is underway. Initial results on RTR ribbons have shown a good correlation of G.B. barrier height with misorientation (tilt boundaries).

During the period April 1975 to March 1978, the American Technological University (ATU) of Killeen, Texas, was awarded several follow-on contracts by the Division of Solar Energy (DSE), Energy Research and Development Administration (ERDA), which subsequently became the Division of Solar Technology (DST), Department of Energy (DOE). The contracts were to design a solar total energy system for use at Fort Hood, Texas. A review encompassing the period of the project from January 1975 to March 1978, was conducted by the Office of Inspector General (IG), DOE. The review examined both the management of the project by ATU and ERDA personnel and the award and administration by ERDA of the contracts to ATU for support of the project. The IG review found that: (1) there was a lack of continuity in the management of the project by both ATU and ERDA; (2) ERDA failed to maintain control of the project and failed to issue specific project direction to ATU; (3) ERDA failed to follow existing procurement regulations for the review and acceptance of unsolicited proposals from ATU; (4) the ERDA Headquarters program Manager and the Contract Administrator for the conceptual design phase of the project had failed to ensure that …

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.