# Decomposition in Optimum Structural Design

*A general method for optimal elastic design of indeterminate structures by decomposition of the structure into separate subproblems is proposed. Both stiffness and flexibility method formulations...*

Response of MDOF Systems to Nonstationary Random Excitation

*Responses of linear, dynamic systems to nonstationary random excitation are calculated using a state formulation. Analytical expressions for evolutionary covariance matrices are derived...*

Methane Migration Around Sanitary Landfills

*Mathematical models have been developed to predict methane migration around sanitary landfills. The methane gas that is generated during the decomposition of refuse constitutes an explosion...*

Buoyant Jet Discharges into Finite Ambient Waters

*The paper presents the results of an experimental study regarding the effect of the lateral dimension of the receiving water on the spreading, mixing, and temperature decay of a horizontal...*

Optimum Truss Geometry for Two Loading Conditions

*Variable node coordinates are considered for the case of minimum weight design under two alternative loading systems of simple ideal trusses. Optimality Kuhn-Tucker conditions are derived...*

Settling in Continuous Sedimentation Tanks

*The widely used empirical relation for the exponential decay of sediment as a function of the overflow rate is given theoretical justification. Using the approach of Camp, who extended...*

Optimum Choice of Determinate Methods Under Multiple Loads

*An algorithm for choosing the least-weight statically determined configuration of a given truss under two loading conditions is presented. The procedure is based on modifying the optimal...*

Transformation for Solving Linear Equations

*This paper proposes an equation solving adjunct for improving the optimality of computer solution of many (thousands of) sparsely-populated linear equations. The paper provides a formal...*

Decomposition Approach to Bus Network Design

*This paper presents a decomposition approach to bus network design in which the task of network design is accomplished through the optimization of a series of subproblems. Bus routes are...*

Factors Influencing Activated Sludge Properties

*Activated sludge dewatering and thickening properties were found to depend upon the concentration of bio-polymers in solution. Sludge conditioning agents were found to function by coagulation...*

Ocean Wave Statistics for 1961 North Atlantic Storm

*Various statistical quantities for a random wave system are derived by different proposed means and compared to each other. A series of ocean waves recorded during a severe storm in the...*

End Effects in Long Curved Beam

*Eigenfunction solutions of the biharmonic equation have been used to investigate the Saint-Venant boundary region in a long curved beam of rectangular cross section. The participation...*

Radial Dispersion Through Adsorbing Media

*The convective-dispersion equation for the transport of a radioactive tracer through an adsorbing porous medium is solved in the cylindrical polar system of coordinates by the Galerkin...*

Pressure Fluctuations in Submerged Jump

*Mean velocities and pressures in the submerged jump downstream of a sluice gate have been investigated. The empirical relationship between the rate of expansion of the jet and the rate...*

Operations Models for Central Valley Project

*System optimizing procedures are being developed for on-line use in the operation of the Central Valley Project (CVP), a complex multiple objective water resource system, in California....*

Equalization of Time Variable Waste Loads

*Influent variability removals in plug flow, dispersion flow, and completely mixed basins with or without decay have been examined and mathematical models developed. The spectral analysis...*

Transient Dispersion in Uniform Media Flow

*Analytical solutions are developed for the transient dispersion from a finite line source or a rectangular plane source in saturated steady uniform porous media flow. The sources are oriented...*

Stochastic Considerations in Thunderstorm Modeling

*A mesoscale stochastic model of thunderstorm activity is developed to simulate the hourly development of both air mass and squall-line storms. This modeling technique is based on Poisson...*

Multilevel Approach to Optimum Structural Design

*The general problem of optimizing and node coordinates in structural design is formulated in terms of mathematical programming. The proposed two-level approach consists in decomposition...*

Multistage Optimization of Structures

*The design optimization problem is formulated as a multistage decision system by decomposing the structure into a series of substructures. The adoption of indeterminate forces as the state...*

Return to search