The total capacity of customers in the MMPP/GI/∞ queueing system

In the paper, the infinite-server queueing system with a random capacity of customers is considered. In this system, the total capacity of customers is analysed by means of the asymptotic analysis method with high-rate Markov Modulated Poisson Process arrivals. It is obtained that the stationary probability distribution of the total customer capacity can be approximated by the Gaussian distribution. Parameters of the approximation is also derived in the pape

Resource queueing system with feedback as a model for servicing two types of traffic

The resource multi-server queue with two arrival processes is considered. The analytical expressions for the means of the number of customers in the orbits are found. The stationary distribution of the two-dimensional stochastic process of numbers of customers in the service block is found, which allows calculating the main probability and numerical characteristics. A numerical example is considered, where the applicability area of approximation was obtained

MYCOLOGICAL STUDYING DURING VARIOUS DISEASES OF GASTROINTESTINAL, RESPIRATORY AND UROGENITAL SYSTEMS

The results of mycological studies of variety of biosamples during gastrointestinal, respiratory and. genitourinary diseases in different patients we analyzed during the period from 2006 to 2010 years. Different types of fungi were found at gastritis (15-30 % of cases), gastric cancers (5-30 %), duodenal ulcer (3-12 % ), diseases of the respiratory system. (9-14 %). In the cases of prophylactic gynecological evaluations the fungi were found in 12-15 % of women; among these 19-28 % were healthy non-pregnant women and. 14-32 % healthy pregnant women

Динамика нарастания степени самостоятельности у лиц с тяжёлыми множественными нарушениями развития (личностная эффективность)

The results of a two-stage (from 2007 to 2010 and from 2010 to 2014 study) pedagogical monitoring allowed to identify the levels of formation of vital competencies (functional, supportive and communicative, situational and behavioral) in patients with severe multipledisabilities. The compiled typological classification of the categories according to their degree of independence of persons and dynamics of development of vital competence, proved personal effectiveness.The results of a two-stage (from 2007 to 2010 and from 2010 to 2014 study) pedagogical monitoring allowed to identify the levels of formation of vital competencies (functional, supportive and communicative, situational and behavioral) in patients with severe multiple disabilities. The compiled typological classification of the categories according to their degree of independence of persons and dynamics of development of vital competence, proved personal effectiveness

Resource retrial queue with two orbits and negative customers

In this paper, a multi-server retrial queue with two orbits is considered. There are two arrival processes of positive customers (with two types of customers) and one process of negative customers. Every positive customer requires some amount of resource whose total capacity is limited in the system. The service time does not depend on the customer’s resource requirement and is exponentially distributed with parameters depending on the customer’s type. If there is not enough amount of resource for the arriving customer, the customer goes to one of the two orbits, according to his type. The duration of the customer delay in the orbit is exponentially distributed. A negative customer removes all the customers that are served during his arrival and leaves the system. The objects of the study are the number of customers in each orbit and the number of customers of each type being served in the stationary regime. The method of asymptotic analysis under the long delay of the customers in the orbits is applied for the study. Numerical analysis of the obtained results is performed to show the influence of the system parameters on its performance measure