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A Galerkin Method for the Convection?Diffusion Equation Using Asymmetric Weighting Functions
A variation of the Petrov-Galerkin method of solution of a partial differential equation is presented in which the weight function applied to the time derivative term of a one-dimensional...

A Numerical Analysis of Spent Nuclear Fuel Thermal Characteristics
A numerical analysis is presented comparing the thermal behavior of a spent boiling water reactor fuel pin and an electric heating element intended to simulate the fuel pin in an experimental...

Numerically Predicting Horizontally Oriented Spent Fuel Rod Surface Temperatures
A comparison between numerical calculations with use of commercial thermal analysis software packages and experimental data simulating a horizontally oriented spent fuel rod array was...

Aperture Characteristics, Saturated Fluid-Flow, and Tracer-Transport Calculations for a Natural Fracture
We used surface-profile data taken with a noncontact laser profilometer to determine the aperture distribution within a natural fracture and found the surfaces and apertures to be isotropic....

Modeling Gravity-Driven Fingering in Rough-Walled Fractures Using Modified Percolation Theory
Pore scale invasion percolation theory is modified for imbibition of wetting fluids into fractures. The effects of gravity, local aperture field geometry, and local in-plane air/water...

Experimental Studies to Calibrate Unsaturated Flow Models
Work is described that has been designed to serve as a laboratory calibration of numerical models for unsaturated flow studies. The experiment size is configured large enough that the...

Stochastic Modelling of Groundwater Flow at the WIPP Site
A stochastic approach to modelling the groundwater flow in the vicinity of the WIPP site in New Mexico is described. A geostatistical model of the transmissivity of the Culebra dolomite...

Managing Government Contracts: Tips to Keeping Your Sanity
The key to managing large government projects is to divide it into smaller manageable pieces and organize it accordingly. Government projects are unique in that they require much more...

Evaluating Environmental Projects
Throughout the Nation, there is increased awareness of and concern for, environmental protection and restoration. Within the U.S. Army Corps of Engineers, new authorities are providing...

The Economic Value of Trout Fishery Management Programs
The contingent valuation method is used to estimate the economic value of a trout fishing day at the Cache la Poudre River in Colorado. In addition, changes in daily economic value and...

Managing Instream Flows for Salmonid Spawning Habitat
Detrimental sediment related effects on aquatic habitat for anadromous fisheries include (1) deposition of excessive amounts of fine sediments in spawning gravels, and (2) mobilization...

Stochastic Forecasts in Reservoir Planning and Operations
The factors involved in stochastic forecasts of water supply and demand are discussed in relationship to reservoir planning and operating decisions....

Characterization of Uncertainty in Reservoir Operations
The development of operating policies for complex reservoir systems typically requires a consideration of various system component interrelationships and several conflicting operating...

Using Forecasts to Improve Reservoir Operations
This review considers methodologies that have or can be employed to incorporate streamflow forecasts into reservoir policies and operating decisions. These include the use of streamflow...

Seasonal Water Quality Management Given Sparse Data
An approach for designing robust seasonal water quality management programs for river basins with sparse or short flow records is presented. This approach uses Markov chain modelling and...

Imprecise Probability and Water Resources Decisions
In water resources engineering weak information would correspond to circumstances when the record is extremely short relative to the mean rate of occurrence of important design events,...

CASS for Evaluating Hg Contamination in Clear Lake, CA
Characterization of ecosystem contamination and evaluation of potential mitigation schemes represent two of the most immediate challenges to management of water resources. Heavy metals...

Integrated Water Resource Planning?A Northwest Case Study
The City of Tacoma Water Division recently incorporated integrated resource planning into its comprehensive water system planning process. This method of planning considers demand-side...

Including Expert System Decisions in a Numerical Model of a Multi-Lake System Using STELLA
During the drought of 1988, water users in the Kanawha River, West Virginia, became painfully aware of conflicting uses that have developed since the 1970s. A numerical modeling of the...

Bringing People, Policies, and Computers to the Water (Bargaining) Table
Droughts have been defined terms of hydrometeorological terms; however, a Water Control Manager realizes that droughts are also a function of demands. During the drought of 1988, water...

 

 

 

 

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