The Fourier transform has long been of great use in simulating mathematical or physical phenomena, especially in signal theory. However the finite length representation of numbers introduces round-off errors in computing. Here, developing a new point of view on the topic, we give an evaluation...

In this work is given the application of Mitrovic's criterion in analysis of the stability of the linear systems using the simplest elements of the analog computing technics : the operational amplifiers and linear ganged potentiometers. Owing to the fact that the adequate analog electrical model...

Trough several applications concerning the Fluid Mechanics and the Thermic, the author shows the advantages of a new hybrid method for RC networks. He compares its performances as regards precision and speed with those of other methods.

The use of the analog computer in teaching engineering and science has become increasingly widespread.

The theory and design of a random number generator suitable for use in a general purpose digital stochastic computer is considered. After a review of possible types of random number generator the paper considers the design of a system for the generation of negatively correlated pseudo-random...

The method of orthogonal collocation on finite elements (OCFE) combines the features of orthogonal collocation with those of the finite element method. The method is illustrated for a Poisson equation (heat conduction with source term) in a rectangular domain. Two different basis functions are...

In this work the authors describe a new design of generator of functions of two independent variables. It is based on the selection of linear functions of the two variables which are generated with passive networks.

This paper describes a hybrid computer simulation of a simple signal detection problem. A signal of unknown phase plus white Gaussian noise is detected with a correlation receiver. Measured detection probabilities and false-alarm probabilities for various signal to noise ratio are compared to...

The boundary layer flow of an atmospheric vortex was analyzed by utilizing a two-equation model of turbulence together with the conventional boundary layer equations. Steady-state solutions were obtained from the time-dependent solutions by using a predictor-corrector, multiple iteration method....

Two new techniques for improving accuracy in digital stochastic computing systems are presented. Simple circuits based on a theory of negative correlation are shown to provide significant error reduction. The fundamental problem of drift in digital stochastic computing circuits is considered and...