Fault finding in a model that is only tentative can present major difficulties. Trying to detect an unknown number of unspecified errors by perusing tables of numbers is difficult and time–consuming with no guarantee of success. For simulation programs graphical techniques can be a useful...

The paper presents the results concerned with the modelling and computer simulation of batch end continuous biotechnological processes. The problem of equivalence of different nonlinear continuous and batch fermentation models has been considered. The problem of recursive unmeasurable states...

A numerical study is presented for the steady-state temperature field and the heat transfer characteristics. The results are obtained by solving the highly nonlinear energy equation using the fourth-order Runge-Kutta method. Two cases including the constant fluid property (CFP) and the variable...

This paper presents an outline of a discrete event simulation model of vehicle movements in parking facilities. It describes the model development and components.

The decomposition method discussed in a recent book (G. Adomian, Stochastic Systems (Academic Press, New York, 1983)) is applicable to inversion of matrices and provides a useful and easy method for general use which furthermore can be extended to random matrices and significant applications.

A perceived conflict is a configuration of two airplanes en route which is regarded by the ground controller as a potential conflict. The frequency of perceived conflicts per shift is a customary and widespread measure of the work load induced upon the air traffic controller and was thus...

Two new simulation languages, DESIRE P and DESCTOP, combine interpretation of the experiment protocol with fast compilation of the model differential equations and thus execute directly on a typed RUN command. Simulations run at about FORTRAN 77 speed. While earlier languages of this type...

The determination of the optimal values for parameters in a continuous dynamic system model is normally a computationally intensive task. Two separate numerical processes are involved; namely, the mechanism for solving the ordinary differential equations that comprise the system model, and the...

Problem partitioning to solve ordinary differential equations on a parallel processor system using classical numerical integration methods involves defining and ordering computation tasks and scheduling the tasks for execution, In defining tasks there is a tradeoff between decomposing a...

I1 est présenté une méthode de résolution directe des systèmes algébriques par itérations. Elle a pour but la conception d'un processeur cablé spécialisé.