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A Two-Stage Safety Assessment Methodology for Construction Activities
The control of construction activities requires the evaluation of the condition of the control attributes of interest. In order to develop the required methodology, a model of the construction...

Numerical Solution of the Transient Fokker-Planck Equation: The Movie
The finite element method is applied to the solution of the transient Fokker-Planck equation for several nonlinear dynamical systems in R², giving...

Risk Based Optimal Fatigue Testing
Optimal fatigue life testing of materials is considered. Based on minimization of the total expected costs of a mechanical component a strategy is suggested to determine the optimal stress...

Time-Variant System Reliability Analysis Using Response Surface Methodology and Fast Integration
An approximate method is presented to solve the structural reliability problem of complex structural systems subjected to time-variant loads where the parameters of the structural system...

First-Excursion Probability of Uncertain Structures
The first-order reliability method (FORM) is used to estimate the first-excursion probability of uncertain structures subjected to deterministic dynamic loads. An algorithm is developed...

Risk Based Structural Optimization
Risk based structural optimization problems for structural systems are formulated on basis of a so-called risk index. The risk index is defined as a consequence modified reliability index...

Reliability-Based Optimization Using Sequential Quadratic Programming
This paper proposes a method for reliability-based optimization of large structures using the Stochastic Finite Element Method, including both component and system reliabilities. In SFEM,...

Structural System Design under Uncertainty Via Pareto Optimization
Structural systems are generally designed under safety, serviceability and economy requirements. The single objective optimal design problem of both deterministic and nondeterministic...

An Exact Expression for the Distribution of Linear Combinations of Uniform Random Variables
Structural dynamic analysis have often in the past relied on the assumption that the system under consideration is well known ahd have been associated the unpredictability of the response...

Reliability Analysis of Plates with Initial Deflection by Entropy Model
Reliability analysis of postbuckling strength is discussed on rectangular plates with initial deflections whose statistical mechanism is estimated by the maximum entropy criteria. Assuming...

Pre-Test Selection of Static Force and Displacement Measurement Locations for Damage Assessment
An incomplete set of static force and displacement measurements are used for parameter identification of linear elastic structures at the element level. Measurement locations and the level...

Parameter Estimation in Complex Linear Structures
We present a new parameter estimation method which simultaneously computes element constitutive parameters and unmeasured displacements of finite element models from measured static responses....

Stochastic Analysis of Seasonal Hydraulic Conductivity
Infiltration data collected by a ring infiltrometer tests, for summer, fall, and spring seasons, were used to determine hydraulic conductivity using Philip's two-term infiltration equation....

Stabilizing Drop Structure by Drainage Modifications
East Drain Terminal Drop Structure is located in East Drain, an open toe drain of Palmetto Bend Dam, in the tide water area of south Texas. The drop structure was threatened by piping...

Groundwater Management in Southern Florida
A water supply plan was developed by the South Florida Water Management District (SFWMD) for Hendry County, Florida as part of the Lower West Coast Water Supply Plan. In the course of...

Statistical Decision Analysis for Interception Wells
In this paper we apply the Bayesian decision analysis to the engineering design of a groundwater interception well whose purpose is to capture a contaminant plume. Two decision variables...

?H and ?⁴C as Tracers of Ground-Water Recharge
Surface spreading of water from the Santa Clara River is used to recharge aquifers underlying the Oxnard Plain. These aquifers are divided into an upper system about 400 feet thick, and...

Evapotranspiration Data Management in California
This paper will discuss components of the California Irrigation Management Information System (CIMIS). CIMIS is an automated agricultural weather network operated by the California Department...

Use of the TETrans Model in Predicting ET Effects on Groundwater Quality
Recently Corwin and Waggoner (1991) developed a contaminant transport software package referred to as TETrans, (acronym for Trace Element Transport). TETrans is a useful preliminary assessment...

Irrigation Project Modernization
Project modernization for sustainable irrigation requires a design and operation plan which will provide water deliveries with flexibility and reliability at each level within the system....

 

 

 

 

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