A framework for stochastic traffic flow modeling over the U. S. National airspace based on queuing network models is advanced. The proposed framework allows the inclusion of a wide variety of trajectory uncertainties such as delays due to weather deviation, air traffic control actions, en route wind, aircraft performance, navigation system precision and flight control. En route queuing networks...

Network Simulator 3 (ns-3) is a powerful tool for modeling the behavior of computer networks using simulation. We have developed three well known differentiated service packet queuing methods: strict priority queuing, weighted fair queuing, and weighted round robin queuing, in the simulation framework. In this paper, we present the implementation details of the three modules as well as their us...

In this paper, we are going to present the simulation results of comparison of five queuing algorithms (Drop Tail, Fair Queuing, Stochastic Fair Queuing, Deficit Round Robin and Random Early Detection) using ns-2 as simulation environment. Comparison of the queuing algorithms is based on attack-intensity. We are checking the performance of each queuing algorithm on a particular queue limit agai...

− A piezoelectric accelerometer output voltage with zero shift was induced by the low-frequency response of the charge amplifier. So we designed a virtual amplifier with same input-output characteristic as the charge amplifier, and shock sensitivities of a piezoelectric accelerometer were evaluated by applying the input acceleration to the virtual amplifier. The shock sensitivities were compara...

We describe a novel method for scheduling highspeed network switches. The targeted architecture is an input-buffered switch with a non-blocking switch fabric. The input buffers are organized as virtual output queues to avoid head-of-line blocking. The task of the scheduler is to decide when the input ports can forward packets from the virtual output queues to the corresponding output ports. Our...

The aim of this research is to design and simulate a fuzzy logic controller (FLC) to control the cell multiplexing in Asynchronous Transfer Mode(ATM) networking , which is a high performance cell oriented switching technology that utilizing of small size packet to carry different types of service for traffic and to show the effect of using the fuzzified variables (queuing message length and the...

Contrary to the conclusions of a recent body work where approximate shortest remaining processing time first (SRPT) flow scheduling is advocated for datacenter networks, this paper aims demonstrate that per-flow fairness remains preferable objective. We evaluate abstract queuing models by analysis and simulation illustrate non-optimality SRPT under reasonable assumptions flows occur in batches ...