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River Engineering and Environmental Resources
The federal government and the Corps of Engineers (CE) are committed to preserving and enhancing environmental quality. Research and development support for this commitment in the realm...

Basin-Wide Stormwater Management in Pennsylvania?A Case Study of Hydrologic Performance Standards
Performance standards in the form of 'release rates' are developed using hydrologic computer models. This basin-wide approach to stormwater management considers...

Next-Generation Local Scale Hydromet Forecasting System
Research and development work is being conducted for the National Weather Service on a new-generation flash flood monitoring and forecasting computer workstation. The workstation represents...

Experiences With a Supercomputer
The advent of ever faster and ever larger computers is opening new areas of scientific study. Within this computational revolution, however, are real people trying to cope with the vagaries...

Three-Dimensional Model of a Stratified Estuary?St. Andrew Bay System, Florida
A three-dimensional modal is applied to a northwest Florida estuary to provide the initial insights into the circulation and flushing patterns of the system. The model, developed by the...

Microcomputer Applications in Transportation III
This proceedings consists of papers presented at the International Conference on Microcomputers in Transportation which was held on June 21-23, 1989 in San Francisco, California. They...

Seawater Experimental Results of Direct-Contact Condensation for OC-OTEC Applications
Tests of a direct-contact condenser (DCC) for open-cycle ocean thermal energy conversion systems (OC-OTEC) have been conducted using seawater and exchanging up to 1.25 MW_th...

Decayed Timber Bridge Microcomputer Rating Program
National Bridge Inspection Standards (NBIS) require that capacity ratings for each bridge structure be established. This requirement includes timber bridges which are often decayed, have...

Wood Variability Effects in Structural Assessment
Engineers evaluating the load carrying capacities of in-service wood structures commonly determine the strength and stiffness properties of structural wood members by various assessment...

Iterative Global/Local Finite Element Analysis
In spite of the advances in computer technology, there is still a need for more computationally efficient methods for performing stress analysis. One approach which is receiving increasing...

The ENF Test: Critical Analysis and Computational Modelling
We have developed an experimental and computational strategy to moderate the experimental scatter of the interlaminar fracture toughness values (G_IIc)...

Long-Term Performance Reliability of Wood Materials
The United States faces a major task in maintaining and rebuilding the nation's infrastructure in the 1990's and beyond. Economic constraints have limited funds...

Applications of X-Ray Imaging in Soil Mechanics
This paper presents a summary of the principles of methods to observe the detailed patterns of local deformation within a soil mass: stereophotogrammetry, polaroscopy, infrared tomography...

AE Instrumentation and Deconvolution Techniques
This paper describes the difficulties and solutions achieved in applying advanced Acoustic Emission (AE) signal analysis techniques to fracture mechanics. The test specimen is a double...

Displacement Measurement by Laser Interferometry and Image Analysis
Laser holographic interferometry was used for the evaluation of displacement fields on concrete and fiber reinforced concrete specimens. Transmission holography was used to analyze mortar...

Application of Waterjet Cutting for Pothole Repair
A study was conducted to determine the feasibility of utilizing high pressure waterjet cutting technology as an infrastructure maintenance tool. The influence of waterjet cutting parameters,...

Accurate Computation of Freezing Index
'Freezing index' (cumulative degree-days below freezing) is used for predicting frost penetration depths and modelling pavement performance. Contour maps which illustrate geographic trends...

Behavior and Strength of Telescopic Steel Shores
To study the load distribution between concrete floors and shores during construction, the non-linear axial load-shortening behavior of a single post shore must be modeled properly. In...

Untangling A Can of Worms
Increasing traffic volumes combined with rush-hour delays and commuter complaints have spurred New York State DOT to improve the capacity of a major interchange near Rochester. The interchange,...

The Fine Print
An engineer who uses software, or supervises those who do, must know the laws regulating its purchase and use. Whether a company contracts for custom software, or leases, licenses or contracts...

 

 

 

 

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