Total-System Analyzer for Performance Assessment of Yucca Mountain
The Total-System Analyzer is a modular computer program for probabilistic total-system performance calculations. The code employs stratified random sampling from model parameter distribution...
Simultaneous Design and Location of Actuators
A chance constrained model for determining optimal dynamic control parameters for structures subjected to probabilistic forcing amplitudes is presented. Optimal feedback control parameters...
Optimal Scheduling of Advanced Maintenance Dredging
This brief article discusses conventional and new procedures for nourishment of beaches taking advantage of recent years' development of more effective equipment of smaller...
Dynamic Analysis of a Beam by the Stochastic Finite Element Method
The statistics on the natural frequencies and mode shapes of an uncertain structure are investigated. The uncertain structural properties are described by a continuous random process in...
Nonlinear Probabilistic FEM for Composite Shells
A probabilistic finite element analysis procedure for laminated composite shells has been developed. A total Lagrangian finite element formulation employing a degenerated 3-D laminated...
An Adaptive Importance Sampling Strategy
An adaptive importance sampling scheme is presented. The scheme updates both the estimate of system failure probability and the importance sampling density. The sampling density used is...
Reliability of Beams on Uncertain Foundation
A two phase approach is developed to evaluate the reliability of a finite linear elastic beam subject to a random point load on uncertain elastic foundation. In phase 1, an approximate...
Cumulants of the Nonlinear Combination of Independent Random Variables
A random variable of interest is often the sum of linear or nonlinear combinations of many independent random variables. In calculating the statistics of this random sum, advantages of...
Response Triscpectrum for a Yielding Structure
Simulation is used to obtain information about non-Gaussian aspects of the absolute response acceleration of a bilinear hysteretic oscillator with an excitation which is Gaussian white...
Computer-Assisted Risk Assessment of Dangerous Goods Transportation for Haute-Normandie
To assess the 'best' routes for the transport of dangerous goods in an area of 600 km2 in France, software based on a geographical information system to manage,...
Knowledge-Assisted Interactive Probabilistic Site Characterization
This paper describes a prototype knowledge-based expert system for probabilistic geological anomaly characterization and geotechnical system reliability evaluation. The system assists...
SOLES: A Knowledge-Based Soil Liquefaction Potential Evaluation System
A prototype computer program, SOLES has been developed to evaluate the liquefaction potential of soil subjected to earthquake excitations. The program applies both rule-and algorithm-based...
Do Simplistic Methods of Foundation Design Produce Reliable Foundations?
Many foundations today are designed using deterministic (single value) analysis techniques which do not reflect the natural variability of soil properties. If the standard deviation and...
Reliability Analysis for Time of Travel in Compacted Soil Liners
Time of travel through compacted soil liners is difficult to predict because numerous factors confound the analysis. In this paper, the influence of spatial variability and uncertainty...
Simulation of Bedload Transport of Marine Gravel
Using combined current meter and acoustic measurements, detailed concurrent time series of instantaneous bedload transport rates and flow turbulence have been obtained. The duration, interval...
Information Entropy and Environmental Engineering
Environmental engineering decisions are often made with limited information. In such cases it is useful to express uncertain quantities with a probability distribution. The use of information...
Probabilistic Analysis of Modernization Options
Benefit-cost analysis is a standard procedure for reaching planning decisions. Cost overruns and benefit shortfalls are also common occurrences. One reason for the difficulty of predicting...
Effects of Hydroelectric Turbine Passage on Fish Early Life Stages
Turbine-passage mortality has been studied extensively for juveniles and adults of migratory fish species, but few studies have directly quantified mortality of fish eggs and larvae. An...
Undeveloped Hydropower Resource Potential
The public hearings conducted as part of the National Energy Strategy produced testimony that concluded that the potential for development of hydropower was not well defined. As a result,...
Probabilistic Scheduling of Cavitation Repairs
The probabilistic nature of maintenance scheduling is exemplified by operating histories and conditions which vary from unit to unit. Typically, an operator must decide whether to repair...
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