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Water Resources International Development: What On Earth Are We Doing?, Patrick Ray
Water Resources International Development: What On Earth Are We Doing?, Patrick Ray
All ECSTATIC Materials
Large agencies such as the World Bank, the Millennium Challenge Corporation, the United Nations, regional development banks (such as the Asian Development Bank), and philanthropic organizations (such as the Rockefeller Foundation) are actively engaged in water resources development in low-income countries. Why? And what metrics do they use to decide if the investments of hundreds of millions or billions of dollars in water infrastructure projects are justified? And what accommodations do they tend to make for risks such as climate change? And what attention do they tend to give to questions of equity? I probably have no idea. But I’ve …
Development Of A Low-Cost Fine Steering Mirror, Steven R. Wassom, Morgan Davidson
Development Of A Low-Cost Fine Steering Mirror, Steven R. Wassom, Morgan Davidson
Space Dynamics Laboratory Publications
The Space Dynamics Laboratory has used internal funds to develop a prototype low-cost two-axis fine steering mirror (FSM) for space-based and airborne applications. The FSM has a lightweight 75 mm-by- 150-mm high-reflectance mirror, high angular deflection capability for along-track ground motion compensation and cross-track pointing, and a 70-Hertz bandwidth for small amplitudes to help cancel unwanted jitter. It makes use of off-the-shelf components as much as possible. Key performance parameters are: Clear aperture, 75 mm; elevation angle, ±15 deg (mechanical); azimuth angle, ±60 deg (mechanical); slew rate, greater than 75 deg/sec; bandwidth, 70 Hz; steady-state average error, about 1 arcsec; …
Thai Students' Attitudes And Concepts Of Technology, Kurt Henry Becker, Somchai Maunsaiyat
Thai Students' Attitudes And Concepts Of Technology, Kurt Henry Becker, Somchai Maunsaiyat
Engineering Education Faculty Publications
Of the eight major programs mentioned in Thailand's Eighth National Education Development Plan (1997-2001), one is aimed at developing human capability in the areas of science and technology. This is to address the fact that the teaching of technology in Thailand is lagging behind the technological changes of the last decade. Part of this reform effort is the development of conceptual based learning activities in science and technology for 12 to 15-year old students. These concepts are being introduced through the offering of a subject at the high school level. de Klerk Wolters (1989) indicated learning the concepts of technology …
Water Resources Development Alternatives For The Mississippi Alluvial Plain In Eastern Arkansas, Gary L. Mahon, John E. Terry, Richard C. Peralta
Water Resources Development Alternatives For The Mississippi Alluvial Plain In Eastern Arkansas, Gary L. Mahon, John E. Terry, Richard C. Peralta
Civil and Environmental Engineering Faculty Publications
Effective management of the water resources of the Mississippi Alluvial Plain in eastern Arkansas involves understanding the nature of existing problems, estimating total water demands, predicting how much of the total demand can be provided by the underlying aquifer and available surface-water sources, and deducing how much water must come from alternate sources. Various Federal and State agencies have cooperatively provided hydrologic information for the area to evaluate water-resources development alternatives ensuring that (1) the use of water from the aquifer be maximized while maintaining a minimum of 20 feet of saturated thickness, (2) the use of surface water be …
Development Of Linear Water Quality Constraints For Optimal Groundwater Management, Richard C. Peralta, J. Solaimanian, S. A. Prathapar, C. L. Griffis
Development Of Linear Water Quality Constraints For Optimal Groundwater Management, Richard C. Peralta, J. Solaimanian, S. A. Prathapar, C. L. Griffis
Civil and Environmental Engineering Faculty Publications
Proposed is a procedure for incorporating solute transport as linear constraints within computer models for optimizing regional groundwater extraction strategies. . MODCON procedure uses linear goal programming. embedded linearized equations for flow and solute transport. and MOC simulation model. Assumed is 20 flow and solute transport. and a dispersed conservative contaminant.
Development Of A Combined Quantity And Quality Model For Optimal Unsteady Groundwater Management, Richard C. Peralta, J. Solaimanian, C. L. Griffis, S. A. Prathapar
Development Of A Combined Quantity And Quality Model For Optimal Unsteady Groundwater Management, Richard C. Peralta, J. Solaimanian, C. L. Griffis, S. A. Prathapar
Civil and Environmental Engineering Faculty Publications
Presented is a procedure for incorporating solute transport as linear constraints within computer models for optimizing regional groundwater extraction strategies. The MODCON modelling procedure uses linear goal programming, embedded linearized equations for flow and solute transport and a MOC simulation model. Assumed is 20 flow and solute transport and a dispersed conservative contaminant. The MODCON procedure develops steady groundwater extraction strategies that will satisfy future groundwater quality constraints while simultaneously causing future piezometric heads to be as close to current heads as possible. The procedure is applied to a 160 square mile area in southeastern Arkansas.
Development Of Optimal Sustained Yield Groundwater Withdrawal Strategies For The Boeuf‑Tensas Basin In Arkansas, Richard C. Peralta, Bithin Datta, Jamal Solaimanian, Paul J. Killian, Amin Yazdanian
Development Of Optimal Sustained Yield Groundwater Withdrawal Strategies For The Boeuf‑Tensas Basin In Arkansas, Richard C. Peralta, Bithin Datta, Jamal Solaimanian, Paul J. Killian, Amin Yazdanian
Civil and Environmental Engineering Faculty Publications
No abstract provided.
Water As A Factor In Energy Resources Development, A. Bruce Bishop, Melvin D. Chambers, William O. Mace, David W. Mills
Water As A Factor In Energy Resources Development, A. Bruce Bishop, Melvin D. Chambers, William O. Mace, David W. Mills
Reports
Water, in many cases, is a key factor in the development of energy resources in the western states. The total water supply available in the arid west is fixed; yet potential water uses in the region are growing continually. In fact, in many areas quantities of water desired to be put to beneficial use has already surpassed the limit of local supplies as indicated by filings for water rights. The availability of water, in adequate quantities and of suitable quality, is one of the essentials to the economic viability of some economic sectors in the states in the Colorado River …
Instrumentation And Development Of Techniques To Measure And Evaluate Meteorological Parameters Important To Hydrology, Duane G. Chadwick
Instrumentation And Development Of Techniques To Measure And Evaluate Meteorological Parameters Important To Hydrology, Duane G. Chadwick
Reports
Hydro-meteorological instrumentation concepts are discussed. The necessity for an economic and reliable telemetering system is recognized and ways are shown how to achieve this objective. Particular discussion is given on total-precipitation and water-content-of-snow sensing. A method is also presented showing how to make isohyetal plots of telemetered precipitation information on an x-y plotter by use of a resistance paper method in conjunction with an analog computer.