the public class parking as an essential component of a modern transport system within the city, provided spaces for the removal of stationary traffic in urban communication system, spaces to temporarily stop vehicles and thus the flow of traffic. locate the appropriate class parking using technological methods, particularly in metropolitan, maximum and optimum use of urban space, so improved p...

In this paper, we analyze a discrete-time GI-G1, Geo2-1 preemptive resume priority queue. We consider two classes of packets which have to be served, where one class has preemptive resume priority over the other. The high-priority class contains packets with generally distributed service times while the low-priority packets are assumed to have geometrically distributed service times. We show th...

The fragmentation of a molecular cloud that leads to the formation high-mass stars occurs on hierarchy different spatial scales. large clouds harbour massive clumps with cores embedded in them. these may determine initial mass function and masses final stars. Therefore, studying processes is crucial understand how form. hot core G34-MM1, IRDC G34.34+00.24 located at distance 3.6 kpc, promising ...

Priority queues have a great importance in the study of computer communication networks in which different types of traffic require different quality of service standards. The discrete-time non-preemptive priority queuing model with priority jumps is proposed in this paper. On the basis of probability generating functions mean system contents and mean queuing delay characteristics are obtained....

In this paper, we analyse two important and relatively complex performance measures, tail probability and switching frequency, for two class queueing system with two different (relative and earliest due date based) dynamic priority schemes across classes. A simulator is build to perform such analysis and various observations are made. Based on computational evidence, it is conjectured that two ...

The utility of a contents delivery network depends on the waiting time. This paper deals with the priority control of contents delivery networks from the viewpoint of utility. First, a subjective evaluation experiment on image downloading is carried out to obtain the relationship between the waiting time and the utility. From the results, a function of the utility versus the waiting time is est...

Abstract. We consider a two-priority, preemptive, single-server queueing model. Each customer is classified into either a high priority class or a low priority class. The arrivals of the two priority classes follow independent Poisson processes and service time is assumed to be exponentially distributed. A queue-length-cutoff method is considered. Under this discipline the server responds only ...