Many interesting and important control systems evolve on strati ed con guration spaces. Robotic systems, in particular, are of this nature. A legged robot has discontinuous equations of motion near points in the con guration space where each of its \feet" come into contact with the ground, and it is precisely the ability of the robot to lift its feet o of the ground that enables it to move abou...

The objectives of this work are (i) to investigate the coupled unsteady heat release mechanisms responsible for thermoacoustic instabilities under di erent ame anchoring con gurations, (ii) to develop reduced-order models to predict the dynamic ame response, and (iii) to develop passive instability mitigation strategies by modifying the dynamics of the ame anchoring zone. The two di erent ancho...

Con gurable computers have attracted considerable attention recently because they promise to deliver the performance of application-speci c hardware along with the exibility of general-purpose computers. Unfortunately, con gurable computing has had rather limited success to date. We believe that the FPGAs currently used to construct con gurable computers are too general to achieve good cost-per...

Con gurable computers have attracted considerable attention recently because they promise to deliver the performance of application-speci c hardware along with the exibility of general-purpose computers. Unfortunately, con gurable computing has had rather limited success to date. We believe that the FPGAs currently used to construct con gurable computers are too general to achieve good cost-per...

Recent work in the area of network security, such as IPsec, provides mechanisms for securing the traÆc between any two interconnected hosts. However, it is not always possible, economical, or even practical from an administration and operational point of view to upgrade the software and con guration of all the nodes in a network to support such security protocols. One apparent solution to this ...

In this paper, we report on measurements of absorption spectra of hexogen, penthrite, and octogen. The measurements were carried out by means of time domain spectroscopy and compared to spectra obtained from a setup, which bases on an optical parametric oscillator combined with a Golay cell. For time domain spectroscopy measurement, Teraview TPS 3000 unit with accessories in transmission con gu...

| This paper attempts to study the bifurcation phenomena of a system of parallel-connected dc/dc boost converters. In particular, it is shown that simple averaged models can be used to predict the occurrence of Hopf bifurcation in such systems. The results provide important information for the design of stable current sharing in a master-slave con guration.

(Part of the results presented in this paper have already appeared in 5])-Abstract We investigate the complexity of the Con-guration REachability Problem (CREP) for two classes of nite weakly predictable cellular automata: the invertible and the additive ones. In both cases we prove that CREP belongs tp the \Arthur-Merlin" class CoAMM2].

A rich variety of version models for software con guration management (SCM) has been proposed over the years, and understanding of the basic concepts and their interrelations has been growing accordingly. In this paper, we propose a uniform version model as a common base, and discuss this in view of current SCM systems.

Partitioning automata (PA) are de ned. They are equivalent to cellular automata (CA). Reversible sub-classes are also equivalent. A simple, reversible and universal partitioning automaton is described. Finally, it is shown that there are reversible PA and CA that are able to simulate any reversible PA or CA on any con guration.