This report analyzes two popular heuristics for ensuring packet integrity in ATM switching systems. In particular, we analyze the behavior of packet tail discarding, in order to understand how the packet level link eeciency is dependent on the rates of individual virtual circuits and the degree of the imposed overload. In addition, we study early packet discard and show that the queue capacity ...

Absfrncf We propose a scheme for expanding switch modules to form a larger switch using the so-called focnl switching obtained by allowing bidirectional connection to the conventional three-stage Clos network switch. The performance of the proposed expansion architecture was compared to that of the conventional three-stage Clos network. We simulated 32x32 switching systems using two expansion a...

This report summarizes progress on Washington University’s Terabit Burst Switching Project, supported by DARPA and Rome Air Force Laboratory. This project seeks to demonstrate the feasibility of Burst Switching, a new data communication service which can more effectively exploit the large bandwidths becoming available in WDM transmission systems, than conventional communication technologies lik...

Over the last several years, a variety of multipoint virtual circuit switching systems have been proposed for use in Asynchronous Transfer Mode (ATM) networks. The inherent exibility of ATM networking and the desire to apply this technology to a wide range of diierent applications makes it impractical to rely on statistical traac models when engineering a system. This motivates a renewed intere...

* Research supported in part by National Nature Science Foundation of China Abstract A suboptimal approach to the d( 0 d ≥ ) step fixed-lag smoothing problem for Markovian switching systems is presented. Multiple Model Estimation techniques have been widely used in solving state estimation problems of these systems. We demonstrated that the mode probability of each fixed-lag smoother at time k-...

a r t i c l e i n f o Keywords: Ticket-switching Retail store Information system-based inventory Actual inventory Inventory inaccuracies in retail stores result from a combination of controllable and uncontrollable factors such as theft, damage, spoilage, misplacement, process errors, ticket-switching, among others. While most shrinkage types affect only one (type of) item, ticket-switching sim...

This work develops asymptotic properties of randomly switching and time inhomogeneous dynamic systems under Brownian perturbation with a small diffusion. The switching process is modeled by a continuous-time Markov chain, which portraits discrete events that cannot be modeled by a diffusion process. In the model, there are two small parameters. One of them is ε associated with the generator of ...

This document suggests a synthesis of a hybrid observer for switching systems. Such a hybrid observer is made up of a discrete observer identifying the switching signal and another one producing an estimation of the evolution of the continuous state. The developed estimation technique is the moving-horizon-state estimation (MHSE). In fact, this approach enables us to transpose the problem of ob...

The fluorophore-spacer1-receptor1-spacer2-receptor2 system (where receptor2 alone is photoredox-inactive) shows ionically tunable proton-induced fluorescence off-on switching, which is reminiscent of thermionic triode behavior. This also represents a new extension to modular switch systems based on photoinduced electron transfer (PET) towards the emulation of analogue electronic devices.

This work is concerned with tracking and system identification for time-varying parameters. The parameters areMarkov chains and the observations are binary valuedwith noise corruption. To overcome the difficulties due to the limited measurement information, Wonham-type filters are developed first. Then, based on the filters, two popular estimators, namely, mean squares estimator (MSQ) andmaximu...