In this paper we outline a control method for telecoms networks based on a new paradigm: that of chaotic control. This new method is presented within the content of ATM by way of example. However it is equally applicable to other kinds of network exhibiting self-similarity. The need for a new control method for ATM arises out of the fact that characteristics which were anticipated for ATM traff...

The performance Distributed Control System (DCS) depends not only on the operation of the individual components, but also on their interaction and cooperation. Therefore, the rules that allow the exchange of messages, i.e. message scheduling policy, is a key issue in terms of system performance. For control applications where control loops are closed over communication networks, this is especia...

Access control systems must be evaluated in part on how well they enable one to distribute the access rights needed for cooperation, while simultaneously limiting the propagation of rights which would create vulnerabilities. Analysis to date implicitly assumes access is controlled only by manipulating a system's protection state—the arrangement of the access graph. Because of the limitations of...

An alternative framework for control design is presented in this paper. It compliments the existing theory in that: 1) it actively and systematically explores the use of nonlinear control mechanisms for better performance, even for linear plants; 2) it represents a control strategy that is rather independent of mathematical models of the plants, thus achieving inherent robustness and reducing d...

Background. Designing highly mobile biologically inspired legged, winged, and limbless robots has advanced considerably in the past decade. Developing motion control algorithms for these robotic systems, however, is mainly carried out using ad-hoc techniques resulting in motions that are far less agile and efficient than the biological species that have inspired the robot morphology. A recent d...

Despite the fact that model composition paradigm becomes very important and most commonly used, the support for their cooperation has not reached its full strength, especially in managing composition conflicts, because it’s often divided between and confused with other model composition features. This makes handling and dealing with these conflicts a crucial activity in the composition process....

The focus of traditional workflow management systems is on control flow within one process definition. The process definition describes how a single case (i.e., workflow instance) in isolation is handled. For many applications this paradigm is inadequate. Interaction between cases to support communication and collaboration is at least as important. This paper introduces and advocates the use of...

A debated question in the cognitive control field is whether cognitive control is best conceptualized as a collection of distinct control mechanisms or a single general purpose mechanism. In an attempt to answer this question, previous studies have dissociated two well-known effects related to cognitive control: sequential congruence and proportion congruent effects. In the present experiment, ...

Agent Technology provides a new methodology in implementing workflow environments. This paper is concerned with how this shift in paradigm affects traditional security concepts like access control and separation of duty principles. The discussion focuses on the implementation of task allocation in an agent-based workflow environment (AWE) that is currently being developed. Task allocation is fu...

We present a physics based system for the guided animation of articulate figures. Based on an efficient forward dynamics simulator, we introduce a robust feedback control scheme and fast two-stage collision response algorithm. A user of our system provides kinematic trajectories for those degrees of freedom (DOFs) of the figure they want direct control over. The output motion is fully generated...