In this paper exhaustive-service priority-M/G/1 queueing systems with multiple vacations, single vacation and setup times are studied under the nonpreemptive and preemptive resume priority disciplines.
Finally, another physical meaning of the service rate is given.
An M/G/1 retrial queue with second multi-optional service, feedback and unreliable server
An M/G/1 retrial queue with two-phase service and feedback is studied in this paper, where the server is subject to starting failures and breakdowns during service.
Primary customers get in the system according to a Poisson process, and they will receive service immediately if the server is available upon arrival.
This DBA algorithm supports differentiated services-a crucial requirement for a converged broadband access network with heterogeneous traffic.
Analyses and simulation results show that the new algorithm can improve the bandwidth utilization and realize the fairness for both different ONUs and services.
Aimed at three basic services (event-driven, data query and stream query), the paper presents a QoS routing model for multimedia sensor networks.
The ASAR chooses suitable paths to meet diverse QoS requirements from different kinds of services, thus maximizing network utilization and improving network performance.
Compared to the typical routing algorithm in sensor networks and the traditional ant-based algorithm, our ASAR algorithm has better convergence and significantly provides better QoS for multiple types of services in the multimedia sensor networks.
Every customer arriving at the network is defined by a set of random parameters: his route over the network (a sequence of nodes visited by the customers), route length, and volume and service length of the customer at every stage of the route.
It is demonstrated that the methods of fluctuation diagnostics may be used to advantage in developing devices for monitoring (in real time) and control of plasma PFs of different types for the purpose of increasing their reliability and service life.
The electric and service-life characteristics are presented.
Examples are given for the relationship between the nature and purity of starting materials and the performance characteristics and service life of catalysts for hydrocarbon dehydrogenation.
As compared to the other catalytic systems, the heterogenized nickel catalyst obtained by thermal treatment of nickel norbornadiene complexes shows much better performance characteristics (selectivity, specific activity, and service life).