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....

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....

one main group of a transportation network is a discrete hub covering problem that seeks to minimize the total transportation cost. this paper presents a multi-product and multi-mode hub covering model, in which the transportation time depends on travelling mode between each pair of hubs. indeed, the nature of products is considered different and hub capacity constraint is also applied. due to ...

The Barabási’s priority queuing model (Barabási, Nature 435:207, 2005) and its variants have been extensively studied to understand heavy-tailed distributions of the inter-event times response observed in various empirical analyses human dynamics. In this paper, we focus on effects deadlines assigned tasks a queue fixed size response-time distributions. Here, time is defined as interval between...

Previous emergency service covering models consider all the calls to be of the same importance and impose the same waiting time constraints independently of the service's priority. This type of constraint is clearly inappropriate in many contexts. For example, in urban medical emergency services, calls that involve danger to human life deserve higher priority over calls for more routine inciden...

The increasing usage of information technology in military affairs raises the need for robust high capacity radio networks that will be used to provide several different types of services, such as group calls and situation awareness services. As all services have specific demands on packet delays and packet losses in order to be fully functional, there is a need for a qualityof-service (QoS) me...

Previous covering models for emergency service consider all the calls to be of the same importance and impose the same waiting time constraints independently of the service's priority. This type of constraint is clearly inappropriate in many contexts. For example, in urban medical emergency services, calls that involve danger to human life deserve higher priority over calls for more routine inc...