The process of rehabilitation after heart disease is a major problem today. Existing mathematical model is phenomenological. This paper presents a mathematical model of the heart rate and pressure under the influence of physical activity. The identification of the presented model based on the modified gradient Levenberg-Markvadt method supplemented with the procedure of initial ratios choice is introduce for the first time.
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The article offers a set of dynamic models of prognosing the Website attendance. The numerical experiments were conducted to identify these models. It allowed to structure an adequate model to prognoze overall and target attendance, basing on the analysis of the business processes’ characteristics of an object, that this Website represents.
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