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Periodicity of the Population Size of an Age-Dependent Model With a Dominant Age Class by Means of Impulsive Perturbations

100%

Covachev V.

International Journal of Applied Mathematics and Computer Science

2000

tom Vol. 10, no 1

147-155

For an age-dependent model with a dominant age class an w-periodic regime of the population size is sought by means of impulsive perturbations. For both noncritical and critical cases of first order the problem is reduced to operator systems solvable by a convergent simple iteration method.

Discrete-time impulsive Hopfield neural networks with finite distributed delays

51%

Akça H. , Alassar R. , Covachev V. , Yurtsever H. A.

Computer Assisted Mechanics and Engineering Sciences

2007

tom Vol. 14, No. 2

145-158

The discrete counterpart of a class of Hopfield neural networks with periodic impulses and finite distributed delays is introduced. A sufficient condition for the existence and global exponential stability of a unique periodic solution of the discrete system considered is obtained.