Abstract. We consider a single allocation hub-and-spoke network design problem which allocates each non-hub node to exactly one of given hub nodes so as to minimize the total transportation cost. This paper deals with a case in which the hubs are located in a cycle, which is called a cycle-star hub network design problem. The problem is essentially equivalent to a cycle-metric labeling problem....

in this research, both resource allocation and reactive resource allocation problems in multi-server dynamic pert networks are analytically modeled, where new projects are expected to arrive according to a poisson process, and activity durations are also known as independent random variables with exponential distributions. such system is represented as a queuing network, where multi servers at ...

in this paper, a multi-objective hub location problem considering stochastic links and candidate nodes characteristics is modeled. the first objective is to minimize total costs, including setup and transportation costs. the second one is to minimize network risks. characteristics such as weather conditions, safety, exchange rate, crisis, are defined as uncertainty parameters and considered as ...

This paper proposes an observer-based control strategy for networked multi-agent systems with timevarying communication delays and random white noises under both fixed topology and Bernoulli switching topology. First, a queuing mechanism is introduced and thus a team of agents can be modeled as a system with constant delay. Then, using the system transformation method, the robust mean-square co...

In this paper, an analytical framework is developed to evaluate the performance of complete sharing (CS) with two different handover priority schemes for multi-class traffic in Low Earth Orbit-Mobile Satellite Systems (LEO-MSS). In the first priority scheme, the handover requests are given the higher priority using queuing scheme with also taking into consideration the priority between classes ...

A M/M/N +M queuing network is considered with d independent customer classes and d server pools in Halfin-Whitt regime. Class i customers have priority for service in pool i for i = 1, . . . , d, and may access other pool if the pool has an idle server. We formulate an ergodic control problem where the running cost is given by a non-negative convex function with polynomial growth. We show that ...

Among the micro-logistic transport systems, railway stations should be highlighted, such as one of most important infrastructure elements. The efficiency industry a whole depends on quality their operation. Such systems have complex multi-level structure, and incoming traffic flow often has stochastic character. It is known that effective approach to study operation mathematical modeling. Earli...