Traffic Congestion and Traffic Safety in the 21st Century
Challenges, Innovations, and Opportunities
This proceedings,
On Scour's Frontier
Combing both computer and physical model studies, engineers attempted to assess the scour of a new North Carolina bridge that will bear the brunt of the East coast's worst...
Observation and Modeling in Numerical Analysis and Model Tests in Dynamic Soil-Structure Interaction Problems
Experimental and analytical studies have both involved soil-structure interaction. Experimental studies offer an opportunity to directly observe the complex phenomena, while analytical...
Seismic Analysis and Design for Soil-Pile-Structure Interactions
Pile foundations are used extensively to support structures in seismic regions around the world. For years, geotechnical engineers have neglected to consider the interaction soil-pile...
Making a Map of Public Health Hazards
Accurately deducing the long-term exposure of community members to health hazards has always been a challenge for engineers. In 1993, the town of Somers, Conn., discovered a residential...
Analysis
This section presents theoretical and practical concepts for the analysis of guyed transmission structures. The concepts are further illustrated in the examples of Section 8. The term...
Project Object
Modeling and managing water systems is a notoriously difficult task, one made simpler by PRSYM, a new object-oriented software package created by a consortium of public utilities, government...
Application of One- and Two-Dimensional Flow Models for an Evaluation of Riverine Wetland Hydrologic Functions
Preservation and restoration of wetland habitats require maintaining a desirable hydrologic regime. The criteria for such a hydrologic regime are established based on marsh inundation...
Application of a Hydrodynamic Model in Design of the Kingman Lake Wetland Restoration Project
The U.S Army Corps of Engineers Baltimore District is restoring 45 acres of wetlands within Kingman Lake in the District of Columbia through the placement of dredged material from the...
A Multiperiod Approach for the Solution of Groundwater Management Problems using the Outer Approximation Method
In a previous work the Outer Approximation method was presented (Karatzas and Pinder, 1993 and 1996) for the solution of groundwater management problems where the selected pumping rates...
Use of SALQR Optimization in Large Aquifer Cleanup
A modified form of Differential Dynamic Programming (DDP), called Suc cessive Approximation to a Linear Quadratic Regulator (SALQR), is used to compute optimal policies for remediation...
Distributed Parameter Hydrologic Modeling and NEXRAD for River Forecasting: Scale Issues Facing the National Weather Service
With the advent of NEXRAD (Next Generation RADar), the National Weather Service has the opportunity to move from current lumped parameter modeling to more of a distributed parameter hydrologic...
Three-Dimensional Numerical Model for Fish Bypass Studies
This paper describes a numerical model developed for evaluating different options for fish bypass systems at Wanapum Dam on the Columbia River, WA. The model predicts the complex patterns...
Application of High-Resolution Schemes to Free Surface Flows in Irregular Channels
A 1-D flow model employing a high resolution scheme based on the Total Variation Diminishing concept is applied to non-prismatic channels of irregular cross-section. The hydraulic properties...
A Graphical Environment for Multi-Dimensional Surface Water Modeling
Recently the Engineering Computer Graphics Laboratory of Brigham Young University in conjunction with the U.S. Army Engineer Waterways Experiment Station and the Federal Highway Administration...
Dormant Season Evaporation: Challenges to the Current Models
Dormant season evaporation is a critical component of the hydrologic balance and can be considered as the winter period or the time in which there is not a crop actively growing. It is...
Two-dimensional Sheetflow Modeling for Wetland Restoration
The hydrologic-hydraulic behavior of wetlands and transitional upland-wetland areas on coastal flat terrains in the Cocohatchee Canal Watershed in Collier County, Florida was simulated...
White River Fish Screen Project?Hydraulic Modeling
In 1983, Puget Sound Power and Light Company (Puget Power) proposed in a license application to FERC for the overall White River Project replacement of the existing fish screens constructed...
An LPI Numerical Implicit Solution for Unsteady Mixed-Flow Simulation
A Local Partial Inertia (LPI) technique is developed as an option within the National Weather Service (NWS) FLDWAV dynamic flood routing model to enhance its capability to model unsteady...
Depth-Averaged Boussinesq Equations Applied to Flow in a Converging Channel
Supereritical flow in a contracting channel is simulated by numerically solving the 2D depth-averaged Boussinesq equations using a fmite-difference model DASH (Molls and Chaudhry 1995,...
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