A state-space oriented approach to analyze dynamic errors in a hybrid computer simulation loop is presented. The approach helps to predict the value of the sampling interval that achieves stable simulation with a prescribed accuracy. A pre-perturbation technique to compensate for the serious...

Two different types of active immittance invertor are employed, one to produce equivalent inductance from capacitance, the other to generate negative conductance from resistance, and combined in a complementary manner to form a new type of RC oscillator. Only unity-gain voltage followers are...

Applications of mathematics to the social and behavioral sciences have burgeoned since the Second World War. Classical techniques of analysis have found wide application, particularly in economics; and in recent years applications of combinatorial mathematics have become increasingly common....

Several ways of solving, by means of iterative analog computation, the partial differential equations describing systems containing flowing fluids are evaluated. The discretization of space variable and of time variable, by central and backward differences, are compared with respect either to...

It is the purpose of the report to discuss the method of mistakes detection and that of partial selfrepair computing process. The method is based on the introduction of redundant variables and additional conditions, that are used as test conditions. The method allows to check and correct the...

The paper deals with the dynamic aseismic design of an elevated irrigation water-tower, 150 ft (45 meters) high, capacity approximately 500 tons, to be erected in series in Northern Greece. The water capacity of the tower's reservoir amounts to approximately 500 tons. The dynamic investigation...

After the Mustard operation in infants for transposition of the great arteries (TGA), unusually contoured pressure waveforms are observed. We studied this phenomenon by devising a pressure-flow model of the infant circulation into which was incorporated a model of the Mustard operation. This...

Dynamic programming finds its use in operation research, chemical engineering, control systems, and applied mathematics; and is primarily concerned with the optimisation of multistage decision processes. Dynamic programming will split up the problem into a succession of N one dimensional...

The usual methods of the solution of partial differential equations require a lot of computing elements, but the number of computing elements may be reduced by employing time-sharing computation utilizing analog memory. The problem is presented here that it takes more computing time and that the...