Showing papers in "Advances in Engineering Software in 1986"
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TL;DR: A subroutine package is presented in which the amount of smoothing on a set of n noisy datapoints is determined from the data by means of the Generalized Cross-Validation or predicted Mean-Squared Error criteria of Wahba and her collaborators.
987 citations
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TL;DR: The system has capability to organize data of both relational and numerical models, and meets several important requirements — a good data model, ability to organize large matrix data, handle various data types, simplified data definition and data manipulation languages, dynamic data definition, multiple database organization, speed of data access, and provision for temporary databases.
18 citations
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TL;DR: In this article, the residue theorem from complex variable theory is used to construct an algorithm that determines whether or not a given point lies within a two-dimensional region, which applies to the most geometrically complex domains characterized by multiple connectivity and non-convexity.
12 citations
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TL;DR: Concepts of normalization of data, global and local databases, and various aspects associated with the development of data models, such as conceptual, internal and external models are discussed with reference to design optimization requirements.
8 citations
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TL;DR: The MAKEBASE system, described in the present paper is an attempt to organ& an information storage and retrieval system of literature references and software information in the field of structural mechanics.
6 citations
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TL;DR: In the early days of Computer Aided Design (CAD) there has been a clear recognition that establishing effective communication between the computer and the designer is crucial to the development of a productive design system.
5 citations
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TL;DR: The quality of software in general and engineering software in particular is a problem attracting more and more attention as discussed by the authors, and the quality, or rather lack of quality, of software is a major concern.
5 citations
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TL;DR: A package of sub-routines, in which the salient properties of problems of this type can be exploited, has been developed and can successfully be used in the simulation of different situations appearing in nuclear magnetic resonance spectroscopy.
4 citations
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TL;DR: The mathematical basis, structure and organisation of the general purpose finite element computer system ALSA (Accurate Large-order Structural Analysis) are presented and its use and capabilities are illustrated by detailed analysis of a bridge structure.
3 citations
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TL;DR: Capabilities of a library called SMART that can be used in the development of scientific programs are described, which contains many interactive programming aids and screen management utilities that can help in development of the user interfaces.
3 citations
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TL;DR: Predictive simulation tools are used to assess the consequences of hydraulic projects before their implementation and face a whole spectrum of river sizes: from small urban or rural streams to water courses several thousands kilometres in length.
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TL;DR: Application de la methode des bandes finies pour l'analyse de the conduction thermique dans des structures telles que des structures soudees (echauffement par le soudage) ou des sections caissons de ponts expose a la temperature ou a une source de chaleur.
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TL;DR: Interactive microcomputer programs for linear and non-linear analysis of framed structures under static loading represent useful analytical complements to the design process used in structural engineering practice.
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TL;DR: In this article, the authors present the design and development of a spreadsheet-like input routine, which is used to analyze the sensitivity of some parameters in optimisation, and the current implementation of this routine is also reported.
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TL;DR: A simple and efficient hidden line algorithm for finite element models that has low computer storage and core size requirements and is able to treat planar quadrilateral polygons without subdividing them into triangles is described.
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TL;DR: A BASIC program for solving nonlinear optimisation models and the optimisation algorithm employed is a slightly modified form of the direct search with systematic reduction of the size of search region (DSSRSSR) developed by Luss and Jaakola.
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TL;DR: In this article, the use of numerical models for prediction of water levels and flows is introduced, and simplifications appropriate to various configurations are suggested to minimise programming effort and computational capacity and time.
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TL;DR: The database administration task and the requirements for the facilities to support this task are dealt with and the facilities for database administration in EDIPAS are used.
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TL;DR: In this article, a one-dimensional Galerkin finite element model for steep slope river flood simulation is presented, based on the transformation of the non-linear partial differential equation of conservation of mass to its ordinary differential equivalent; the forward difference scheme is employed for the time domain; and the Newton-Raphson iterative method implemented for solution.
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TL;DR: Details of pre- and post-processing software designed particularly for presentation of data and results for three-dimensional finite element and boundary element program particularly suited to geomechanics applications are presented.
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TL;DR: From the stiffness method of structural analysis, both nodal displacements and forces are unknowns, and from this it is able to perform static condensation of a stiffness matrix without reordering the node-numbers of the system of equations, and thus the skyline profile is preserved.
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TL;DR: In this article, an alternative approach involving a vector method is proposed to automate the kinematic analysis of rock slope stability, which is suitable for use on a microcomputer and which can analyse possible plane sliding, wedge sliding and toppling of cliff face excavations.
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TL;DR: In this paper, a method for incorporating the initial conditions of the differential equations of the drop-shaped tank given at a singular point is presented, where the approach has been to choose an arbitrary point sufficiently close to the singular point.
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TL;DR: In this article, a short computer program is given that generates shapes of a certain class of axisymmetric thin shell surfaces using a shooting method that starts with previously published initial data and reconstructs solutions.
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TL;DR: In this article, a finite difference scheme based on the characteristic network representing the slip surface field under a non-tilting circular footing is used to give stress distributions and bearing capacities, and a microcomputer algorithm is compared with model test results and Terzaghi's formula.
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TL;DR: Several decentralised control design methods and a FORTRAN package DLSDP based on them are described and methods for design of stabilising control for systems with and without pure time-delays, optimal control and robust under structural perturbations control are described.
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TL;DR: In this article, the authors present a subroutine library for Finite Element Methods (FEM) to establish and solve a linear system of equations for a number of right hand sides using almost the same data for all methods.