Digital Commons Network^™

Hardware And Software Considerations For Improving The Throughput Of Scientific Computation Computers, Glenn Allen Sullivan

Retrospective Theses and Dissertations

In this paper, hardware and software techniques are presented for improving the Throughput (defined as computations per dollar) of computing systems which are oriented towards high-precision floating point computations. The various improvements are referenced to a baseline of the PDP 11/20, the NOVA 1200, and the TI 960A, all 16 bit minicomputers. The most beneficial hardware improvement is the inclusion of a Floating Point Processor, which yields up to 200X Throughput increase over a software floating point package. The inclusion of a cache high speed local memory and the availability of Polish Notation format instructions are shown to provide less …

Removal Of Hydrogen Sulfide From Ground Water In Central Florida, Thomas G. Lochrane

Retrospective Theses and Dissertations

The presence of hydrogen sulfide in a ground water source is noted by its rather obnoxious odor, similar to a "rotten egg". Concentrations as low as 0.05 ppm are noticeable, therefore, almost its entire removal is demanded prior to potable consumption. Hydrogen sulfide is formed primarily by the decomposition of organic matter in anaerobic conditions. Removal of this gas has been accomplished by means of aeration, detention, and chlorination over the years. The mechanisms behind each of these processes are complex and discussed in this paper. During the course of this investigation, a literature survey concerning the mature and sources …

Test Sites For Farm Dams, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

A short article outlining procedures for testing potential dam sites.

Design Standards For Farm Surface Water Supplies, J L. Frith

Journal of the Department of Agriculture, Western Australia, Series 4

Design is usually concerned with getting adequate return from limited recources. Farm dams which dry up represent dam failure. Less seriously, so too do dams which, although not drying out, never fill; they waste a recource.

Field Investigation Of County Road Bases And Subgrades, D. G. Shurig, Jean E. Hittle, E. J. Yoder, W H. Goetz

Indiana Local Technical Assistance Program (LTAP) Publications

This bulletin focuses on the investigation, sampling, and testing of in-place wearing surface materials, in-place base materials, and in-place subgrade materials in advance of paving. This is especially important the first time the road is to be blacktopped. However, the investigation and testing methods suggested herein are equally applicable to existing blacktop pavements needing reconstruction. The test methods focus on two quick field tests that have been developed through research to measure equivalent CBR values. CBR is a measure of the load-carrying capacity of base or subgrade materials.

The methods and procedures set forth in this bulletin should go far …

Review Report For Water Resources Development Missouri River South Dakota, Nebraska, North Dakota, Montana, Volume 3 Of 3

United States Army Corps of Engineers, Omaha District

Appendix 2, Pertinent Correspondence Letters From:

Bureau of Outdoor Recreation, Bureau of Reclamation, National Park Service, Bureau of Indian Affairs, Federal Power Commission, Department of Housing & Urban Development, Department of Health, Education & Welfare, Bureau of Mines, Bureau of Land Management, United States Coast Guard, Soil Conservation Service, Advisory Council on Historic Preservation, Energy Research and Development Administration, Missouri River Basin Commission, Fish and Wildlife Service, Siouxland Interstate Metropolitan Planning Council, Montana Office of Budget and Program Planning, Montana Department of Natural Resources and Conservation, Montana Department of Fish and Game, Governor of Montana, Glasgow Area Chamber of Commerce …

Potential-Selective Deposition Of Copper From Chloride Solutions Containing Iron, Ralph E. White, James A. Trainham, John Newman, Thomas W. Chapman

Faculty Publications

The hydrometallurgy of copper may involve leaching of the metal from its ore with an aqueous solution containing cupric and ferric chloride. The subsequent deposition of copper from such a process stream is modeled here in an idealized electrochemical cell with a rotating-disk electrode. The potential distribution and concentration profiles within the diffusion layer are predicted for given potential differences between the electrode and the solution. The cuprous ion, which is formed by the reduction of the complexed cupric ion at the electrode, is stabilized in the chloride solution and can react either at the electrode or with ferric species …

Steel Roof Deck Design Manual, Steel Deck Institute

Steel Deck Institute (SDI) Specifications and Manuals (1939 - present)

No abstract provided.

Low Order Correction For Subsurface Contributions In Diffusion Experiments, D. Powers, Manfred Wuttig

Materials Science and Engineering Faculty Research & Creative Works

No abstract provided.

Transportation Research Reports Issued By The Division Of Research, Robert C. Deen

Kentucky Transportation Center Research Report

A bibliographic listing of research reports issued by the Division of Research, Kentucky Bureau of Highways.

Stiffness Of Solid-Liquid Mixtures: Theoretical Considerations, David L. Allen

Kentucky Transportation Center Research Report

A rational approach to the solution of the stiffness of solid-liquid mixtures is presented. The stiffness of such mixtures is dependent on the stiffness of the viscous medium and the volume concentration and elastic modulus of the solid portion. Finally, the general solution is applied, in particular, to bitumen-aggregate mixtures; and the results are compared to experimental data.

Glass In The Year 2000, Norbert J. Kreidl

Materials Science and Engineering Faculty Research & Creative Works

No abstract provided.

Estimating Hourly Solar Radiation For One-Axis Tracking Focusing Collectors, Carl E. Bingham, David M. Posner, Jerry O. Bradley

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Performance simulations of focusing parabolic collectors are hampered by a limited amount of useful insolation data. Hourly values of total radiation on a horizontal surface are the most common data available from the National Oceanographic & Atmospheric Administration. This paper develops a method to convert this total horizontal radiation to direct radiation on the surface of the tracking collector.

Agricultural Crop Drying And Space Heating Using A Solar Energy Intensifier, M. A. Hellickson, W. H. Peterson, S. E. Saienga, J. L. Julson

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

A solar energy-intensifier-thermal energy storage system was developed and tested under actual climatic conditions in South Dakota. Performance characteristics of the system are presented for its use in drying shelled corn and for agricultural space heating. Comparisons between solar and conventional drying between solar supplemented and conventional heating are reported.

Experimental Study Of The Dynamic Response Of Highway Bridges : Interim Report, Peter Karl Kropp

JTRP Technical Reports

No abstract provided.

Superior Bluegrasses For Roadside Turf : Interim Report, William Hugh Daniel, Harold L. Michael

JTRP Technical Reports

No abstract provided.

The Effect Of Pavement Skid Resistance On Wet Pavement Accidents In Indiana, Jonathan Lenard Levy

JTRP Technical Reports

No abstract provided.

A Laboratory Evaluation Of The Influence Of Crushed Stone, Aggregate Top Size And Binder Type On Aetm Properties, Bradley V. Saxton

JTRP Technical Reports

No abstract provided.

Examination Of The Variability Of The Soaked Strength Of A Laboratory Compacted Clay : Interim Report, James C. Scott

JTRP Technical Reports

No abstract provided.

Traffic Speed Report No. 98 : Interim Report, Graham S. Toft, George K. Stafford

JTRP Technical Reports

No abstract provided.

A Low-Cost Maintenance Program For Indiana Roadsides : Final Summary Report, D. James Morré

JTRP Technical Reports

No abstract provided.

Traffic Speed Report No. 100 : Interim Report, Graham S. Toft, George K. Stafford

JTRP Technical Reports

No abstract provided.

Bridge Vibration Studies : Interim Report, Ali Shahabadi

JTRP Technical Reports

No abstract provided.

Nondestructive Testing And Evaluation Of Flexible Highway Pavements, Milton Edward Harr, George Y. Baladi

JTRP Technical Reports

No abstract provided.

Traffic Speed Report No. 99 : Interim Report, Graham S. Toft, George K. Stafford

JTRP Technical Reports

No abstract provided.

Frost Heaving Rate Of Silty Soils As A Function Of Pore Size Distribution : Interim Report, Michael Allen Reed

JTRP Technical Reports

No abstract provided.

Traffic Speed Report No. 103 : Interim Report, James Robert Mekemson, George K. Stafford

JTRP Technical Reports

No abstract provided.

Traffic Speed Report No. 102 : Interim Report, James Robert Mekemson, George K. Stafford

JTRP Technical Reports

No abstract provided.

Correlation Of Design And Control Characteristics With Accidents At Rural Multi-Lane Highway Intersections In Indiana : Interim Report, Maren Peter Van

JTRP Technical Reports

No abstract provided.

Stress-Deformation And Strength Characteristics Of A Compacted Shale : Interim Report, Russell Aubrey Abeyesekera

JTRP Technical Reports

No abstract provided.