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Articles 811 - 824 of 824
Full-Text Articles in Physical Sciences and Mathematics
Water Management Simulator Presentations, Leslie E. Mack
Water Management Simulator Presentations, Leslie E. Mack
Technical Reports
One of the larger stumbling blocks to comprehensive water management is the lack of public understanding of the multitude of variables that operate at the same time within the hydrologic cycle. With more public understanding, there is greater public support for various water projects. Dr. John R. Amend from Montana State University developed a water management simulator which could handle a large number of variables simultaneously of natural surface and groundwater flow plus a number of water use variables on an accelerated time sequence. By using several remote control devices, participants can "control" their water use but have no control …
A Microsystem Sediment-Water Simulation Study For The Proposed Jordanelle Reservoir, Heber City, Utah, United States Department Of The Interior, Bureau Of Reclamation
A Microsystem Sediment-Water Simulation Study For The Proposed Jordanelle Reservoir, Heber City, Utah, United States Department Of The Interior, Bureau Of Reclamation
Water
The technique of microsystem sediment-water simulation was used to predict water quality data for the proposed Jordanelle Reservoir, Heber City, Utah. Simulation microsystems were prepared for four sites located in the north arm of the reservoir basin including two sites located in an abandoned acid mine tailings pond. Data obtained from the tailings pond microsystems indicated that low pH water and high trace metal concentrations will exist in the north arm of the reservoir. These data suggested that some kind of membrane or compacted earth lining will be necessary to seal and contain the mine spoilage. Other sites in the …
The San Luis Valley Groundwater Dispute, David Harrison, Jeris Danielson
The San Luis Valley Groundwater Dispute, David Harrison, Jeris Danielson
Groundwater: Allocation, Development and Pollution (Summer Conference, June 6-9)
25 pages (includes illustrations and map).
Agenda: Groundwater: Allocation, Development And Pollution, University Of Colorado Boulder. Natural Resources Law Center
Agenda: Groundwater: Allocation, Development And Pollution, University Of Colorado Boulder. Natural Resources Law Center
Groundwater: Allocation, Development and Pollution (Summer Conference, June 6-9)
Even before the [Natural Resources Law] Center was established [in the fall of 1981], the [University of Colorado] School of Law was organizing annual natural resources law summer short courses. To date four programs have been presented:
- July 1980: "Federal Lands, Laws and Policies-and the Development of Natural Resources"
- June 1981: "Water Resources Allocation: Laws and Emerging Issues"
- June 1982: "New Sources of Water for Energy Development and Growth: lnterbasin Transfers"
- June 1983: "Groundwater: Allocation; Development and Pollution"
(Reprinted from Resource Law Notes, no. 1, Jan. 1984, at 1.)
University of Colorado School of Law professors …
Simulation Of Burley Tobacco Harvesting-Housing Systems, Ronald L. Bingner, Larry G. Wells, Thomas C. Bridges, George A. Duncan
Simulation Of Burley Tobacco Harvesting-Housing Systems, Ronald L. Bingner, Larry G. Wells, Thomas C. Bridges, George A. Duncan
Biosystems and Agricultural Engineering Faculty Publications
A computer model has been developed using systems analysis techniques to simulate the labor and equipment aspects of harvesting burley tobacco. By varying the parameters of the model the user can determine a harvesting and housing strategy based on labor and equipment availability.
Numerical Model Simulation Of Offshore Flow During The Winter Season, Maria Cintia Piccolo
Numerical Model Simulation Of Offshore Flow During The Winter Season, Maria Cintia Piccolo
OES Theses and Dissertations
Because of the step function variability of heat and moisture flux in coastal zones, adequate descriptive models of mesoscale coastal circulation and weather patterns demand high spatial resolution in the analysis of wind, temperature and moisture patterns. To obtain realistic concepts of offshore flow the sparse offshore data networks need to be supplemented by mesoscale numerical models. The problems associated with the modeling of offshore flow across the east coast of the United States during the winter season have been investigated with a simple two dimensional numerical model of the planetary boundary layer.
The model has two predictive equations for …
Effects Of Changes In Surface Water Regime And/Or Land Use On The Vertical Distribution Of Water Available For Wetland Vegetation: Dynamic Model Of The Zone Of Aeration (Part 1 Of Completion Report For Project A-023-Ark), Robert N. Maccallum, R. A. Sims
Effects Of Changes In Surface Water Regime And/Or Land Use On The Vertical Distribution Of Water Available For Wetland Vegetation: Dynamic Model Of The Zone Of Aeration (Part 1 Of Completion Report For Project A-023-Ark), Robert N. Maccallum, R. A. Sims
Technical Reports
A mathematical model by Green, simulating one-dimensional vertical ground-water movement in unsaturated soils of the prairie region of Kansas, has been adapted for use in a wetlands environment typified by the wetlands forest of Eastern Arkansas. The model consists of two second-order, non-linear, partial differential equations and an algorithm for their numerical solution. The original model was extended to include functions for seasonal changes in transpiration and for drainage of excess precipitation. Before the addition of the two functions, the model reliability was limited to one growth season.
Evaluation Of Detention Basins For Controlling Urban Runoff And Sedimentation, C. T. Haan, A. D. Ward
Evaluation Of Detention Basins For Controlling Urban Runoff And Sedimentation, C. T. Haan, A. D. Ward
KWRRI Research Reports
This report summarizes the work completed under the research project "Evaluation of Dentention Basins for Controlling Urban Runoff and Sedimentation." The main project accomplishments were:
(1) a demonstration of the desirability of considering systems of urban stormwater detention basins as opposed to individual basin design,
(2) the development of a systems analysis approach for least cost selection of a system of dentention basins for meeting a preset hydrologic objective,
(3) the development of a mathematical, computer-based simulation model of the performance of sediment retention basins,
(4) partial verification of the sediment basin model and
(5) the development of design recommendations …
Development And Preliminary Application Of Mathematical Models To The Weber Basin, W. J. Grenney, D. S. Bowles, M. D. Chambers, J. P. Riley
Development And Preliminary Application Of Mathematical Models To The Weber Basin, W. J. Grenney, D. S. Bowles, M. D. Chambers, J. P. Riley
Reports
The adoption of stream standards, whether for direct application or for the establishment of realistic effluent standards, creates a need to predict the impact of pollution loads on river water quality during critical flow periods or as the result of future user demands. Because of the complexity of aquatic systems, mathematical models are an excellent medium for bringing together the state-of-the-art knowledge from a variety of disciplines into a form which can be readily applied to practical problems. Applying a mathematical model to a river system has the added advantage of providing a structure for the systematic consideration of the …
Mathematical Simulation Of Temperatures In Deep Impoundments: Verification Tests Of The Water Resources Engineers, Inc. Model - Horsetooth And Flaming Gorge Reservoirs, Engineering And Research Center, Bureau Of Reclamation
Mathematical Simulation Of Temperatures In Deep Impoundments: Verification Tests Of The Water Resources Engineers, Inc. Model - Horsetooth And Flaming Gorge Reservoirs, Engineering And Research Center, Bureau Of Reclamation
All U.S. Government Documents (Utah Regional Depository)
Successful use of predictive mathematical models requires verification of the accuracy of the models by applying them to existing situations where the prediction can be compared with reality. A Corps of Engineers' modification of a deep reservoir thermal stratification model developed by Water Resources Engineers, Inc., was applied to two existing Bureau of Reclamation reservoirs for verification. Diffusion coefficients used for the Corps' Detroit Reservoir were found to apply to Horsetooth Reservoir in Colorado, for which very good computer input data were available. The Detroit diffusion coefficients gave a reasonable simulation of Flaming Gorge Reservoir in Wyoming and Utah, which …
The Stanford Watershed Model: The Correlation Of Parameter Values Selected By A Computerized Procedure With Measurable Physical Characteristics Of The Watershed, Part 2, Glendon Allen Ross
The Stanford Watershed Model: The Correlation Of Parameter Values Selected By A Computerized Procedure With Measurable Physical Characteristics Of The Watershed, Part 2, Glendon Allen Ross
KWRRI Research Reports
Soundly planned water resources development requires a knowledge of streamflow magnitudes and time patterns. Where recorded information is unavailable, water resources project design can be greatly improved by streamflow simulation.
This study is devoted to describing the application of a self-calibrating version of the Stanford Watershed Model to 17 rural Kentucky watersheds and two urbanizing watersheds. The required data for this version (OPSET) is tabulated and the data collection process is described. The watershed parameter values estimated by OPSET and independent numerical estimates of physical watershed characteristics are tabulated and correlated. The results should help in estimating parameter values for …
The Practical Solutions And Computer Program Of Two Statistical Problems In Simulation, Yee Fong
The Practical Solutions And Computer Program Of Two Statistical Problems In Simulation, Yee Fong
All Graduate Plan B and other Reports, Spring 1920 to Spring 2023
In the last several years monte-carlo simulation has become a major tool for the analysis of complex queuing systems which are no readily amenable to analysis by conventional mathematical methods. By a complex queueing system is mean a system composed of, physically or by analogy, a network of stations or servers with traffic units moving through all or some of the servers, into the system and out or around within the system. A traffic unit desiring service by a server may either have to enter a queue first or may be served immediately. Such systems have been simulated often with …
Simulating Regional Interindustry Models For Western States, William A. Schaffer, Kong Chu
Simulating Regional Interindustry Models For Western States, William A. Schaffer, Kong Chu
Applications
Although regional input-output models are now most frequently constructed on the basis of reasonably adequate surveys, simulation (estimating) techniques not based on original survey data are still in use by many regional scientists for quick and less costly results. We will modify our original aggregation procedures, examine our results through several statistical tests of tables constructed for three Western states, and discuss a possible correction procedure for improving raw estimates of interindustry transactions.
A Logistic System Simulation Model Encompassing Poisson Processes And Normal Or Weibull Life, Willard A. Hansen
A Logistic System Simulation Model Encompassing Poisson Processes And Normal Or Weibull Life, Willard A. Hansen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This thesis describes a computer simulation model for determining effective spares stock levels for recoverable items at Air Force bases and depots. The simulation model is based on the following fundamental inventory theory; whenever a demand arises, it is satisfied from stock on hand, and the quantity equal to that demand is recorded immediately; when a demand exceeds stock on hand, the excess demand is backordered immediately and when item life expires procurement action is initiated at depot level. The resulting product of the model cam be used as a guide for the optimum distribution of available spares or as …