Asynchronous optical packet switching seems to be suitable as a transport technology for the next-generation Internet due to the variable lengths of IP packets. Optical buffers in the output port are an integral part for solving contention by exploiting the time domain. Fiber delay lines (FDLs) are a well-known technique for achieving optical buffers. This work aims to give a highly accurate ap...

It is well known that the fitting methods based on the second-order statistics of counts for the arrival process are not sufficient for predicting the performance of the queueing system with self-similar input. However recent studies have revealed that the loss probability of finite queuing system can be well approximated by the Markovian input models. This paper studies the time-scale impact o...

We propose a new technique for upper and lower bounding the throughput and blocking probabilities in queueing networks with buuer capacity constraints, i.e, some buuers in the network have nite capacity. By studying the evolution of multinomials of the state of the system in its assumed steady state, we obtain constraints on the possible behavior of the system. Using these constraints, we obtai...

This paper aims to reduce the pessimism of the analysis of the multi-point progressive blocking (MPB) problem in real-time priority-preemptive wormhole networks-on-chip. It shows that the amount of buffering on each network node can influence the worst-case interference that packets can suffer along their routes, and it proposes a novel analytical model that can quantify such interference as a ...

Abstract Remote Direct Memory Access (RDMA) is widely deployed in data centers to improve the performance, efficiency, and reliability of centers. Priority-based Flow Control (PFC) can ensure no packet loss as a necessary approach achieve lossless RDMA. However, since PFC coarse-grained flow control mechanism based on port priority, it cause head-of-line blocking problem affect other flows, res...

In this paper, we detail our methods for controlling spam at a small ISP, reducing both resource usage and customer complaints. We will discuss our initial unsuccessful tactics, and the resulting development of our unique spam blocking system. Deny-Spammers classifies hosts as probable spammers and inserts those hosts into a dynamically updated firewall ruleset on our mail server, thereby effec...

The next generation of distributed digital Video-onDemand (VoD) systems will use admission control tests to ensure that users receive predictable and guaranteed service. If the system cannot support a new request then that request blocks. This paper presents an analytical model to evaluate unified admission control strategies for distributed VoD systems with multiple video classes. We prove tha...

Abstract Aiming at the problem of high recoil kinetic energy caused by launching long-range guided projectiles, main effect and Pareto barrel diameter, projectile mass, initial velocity charge on are studied based Latin hypercube test design under certain bore pressure conditions, which provides reference for evaluation control brought new ammunition. At same time, in order to solve difficulty ...

Anatomical and physiological studies have shown that anteroventral cochlear nucleus (AVCN) neurons receive glycinergic and GABAergic inhibitory inputs. In this study, changes in the temporal responses of AVCN neurons to pure tones and complex sounds after blocking inhibition were analyzed. Blocking inhibition influenced the temporal responses of each type of AVCN neuron. Choppers showed more ch...

introduction: the implantation is a complex procedure that involves many molecules. one of these molecules is integrin specially &alphav;&beta3; which serves as receptor for components of extra cellular matrix to act as bridging molecules between the blastocyst and the endometrial surface during the implantation process. by blocking &alphav;&beta3; interactions, the implantation can be impaired...