Lev Khvatskin

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Modern high-tech medical equipment requires precise temperature control and effective cooling, which allow medical equipment to be operated for longer periods and increased in availability of the equipment to patients. This paper presents the application of the L<sub>z</sub>-transform method to availability assessment of aging multi-state cooling system for(More)
In this paper we compare different reservation modes of Air conditioning systems for apartments, offices or cooling rooms that have a specific regime of temperature/humidity conditions. In the first reservation mode the required temperature and humidity conditions are provided by two cooling chillers (conditioners) with reserved chiller staying in cold(More)
We consider data processing for a Nonhomogeneous Poisson process (NHPP) with Log-linear and Power-law intensity functions. Parameter estimation is carried out by the maximum likelihood method. For the case of the known intensity function, testing the hypothesis that the given sample path is a realization of NHPP, can be accomplished using the fact, that(More)
We analyzed performance of industrial animal food additives manufacturer. Our primary focus is on production of food supplement for growing chickens. In order to determine the performance of manufacturing production system we constructed a mathematical model that based on Markov chains and represents the different states of each element and sub-systems in(More)
In this paper we present the model for estimation reliability measures of reserved of air-conditioning systems for hotels, apartments, offices or cooling rooms that have a specific regime of temperature/humidity conditions, which described as stochastic process. In this reservation mode the demand of the required temperature and humidity condition is(More)
Modern high-tech medical equipment requires precise temperature control and effective cooling, which allow medical equipment to be operated for longer periods and increased in availability of the equipment to patients. This paper presents the application of the L<sub>z</sub>-transform method to assessing cooling performance of aging multi-state cooling(More)
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