In this paper, we study the departure process of the GI/G/1 queue. We develop a simple recursive procedure to calculate the MacLaurin series of its moments and covariances with respect to a parameter in the service time. Based on this recursive procedure the explicit formulas of the coeÆcients of these MacLaurin series can be obtained in terms of derivatives of the probability density function ...

This study investigates the moderating effect of firm size in the relationship between corporate governance (board size, board independence and ownership concentration) and banks’ risk-taking (insolvency risk and credit risk). Secondary data (annual reports) was collected from a sample of 21 Malaysian commercial banks covering the 2005–2014 accounting period. An empirical model using pooled ord...

dividend policy is one of the most important financial decisions that managers encounter. this study contributes to the literature of dividend and empirical research investigating the effects of dynamic factors in tehran stock exchange. based on some criteria, the study contains 133 listed firms over a 10-year period from 2001 to 2010. to test the research hypotheses, this study uses fixed effe...

In this paper we present a randomized algorithm for the multipacket routing problem on an n×nmesh. The algorithm completes with high probability in at the most kn + o(kn) parallel communication steps, with a queue size of k + o(k). The previous best known algorithm [3] takes 5 4 kn+O( kn f(n) ) steps with a queue size of O(k f(n)) (for any 1 ≤ f(n) ≤ n). The algorithm that we will present is op...

The data freshness at decision epochs of time-sensitive applications, e.g., auto-driving vehicles and autonomous underwater robots, is jointly affected by the statistics update process process. This work considers an update-and-decision system with a Poisson-arrival bufferless queue, where updates are delivered processed for making decisions exponential or periodic intervals. We use age-upon-de...

A model of a switching component in a packet switching network is considered. Packets from several incoming channels arrive and must be routed to the appropriate outgoing port according to a service policy. A task confronting the designer of such a system is the selection of policy and the determination of the corresponding input buuer requirements which will prevent packet loss. One natural ch...

We consider a model of two M/M/1 queues, served by a single server. The service policy for this polling model is of threshold type: the server serves queue 1 exhaustively, and does not remain at an empty queue if the other one is non-empty. It switches from queue 2 to queue 1 when the size of the latter queue reaches some level T , either preemptively or non-preemptively. All switches are insta...

Active Queue Management (AQM) plays an important role in the Internet congestion control. It tries to enhance congestion control, and to achieve tradeoff between bottleneck utilization and delay. Random Early Detection (RED) is the most popular active queue management algorithm that has been implemented in the in Internet routers and is trying to supply low delay and low packet loss. RED al...