To model complex systems, software agents need to combine cognitive abilities to reason about complex situations, and reactive abilities to meet hard deadlines. We propose an operational hybrid agent model which mixes well known paradigms (objects, actors, production rules and ATN) and real-time performances. This agent model combines cognitive and reactive modules. The cognitive module uses a ...

Time dependent dispersivity behavior of non-reactive solutes in a system of parallel fractures G. Suresh Kumar, M. Sekhar, and D. Misra Department of Civil Engineering, Queens University, Kingston, Canada Department of Civil Engineering, Indian Institute of Science, Bangalore, India Department of Mining and Geological Engineering, University of Alaska, Fairbanks, USA Received: 16 March 2006 – A...

We study the phase diagram and critical behavior of a one dimensional three species monomer-monomer catalytic surface reaction model. Static Monte Carlo simulations are used to roughly map out the phase diagram consisting of a reactive steady state bordered by three equivalent unreactive phases where the surface is saturated with one monomer species. The transitions from the reactive phase are ...

The movement parameters of yellow fin tuna schools were analyzed by means of scanning sonar in tuna purse seine capture situations in the Oman Sea in June 2010. There was significant difference in swimming speed and radial swimming direction between the escaped and captured schools. In escaped cases, the fish schools swam faster with mostly horizontal avoidance behavior to the sound stimuli fro...

In research or experimental works related to blast loads, the amount of explosion material and distance of explosion point are very important. So, in this paper has been attempted to present a parametric study of the reactive powder concrete subjected to blast load. The effect of the different amount of TNT adopted the literature, distance of explosion point from RPC slab and also the location ...

Complex problems, such as driving, can be solved more easily by decomposing them into smaller subproblems, solving each sub-problem, and then integrating the solutions. In the case of an autonomous vehicle, the integrated system should be able to \react" in real time to a changing environment and to \reason" about ways to achieve its goals. This paper describes the approach taken on the UMass M...

In order to fully exploit all the potentials of various heterogeneous resources in sensor network applications in a context-aware manner, coordinated research efforts need to be pursued in multiple technical areas including networking, information management, control, and spatio-temporal data/events management. At the heart of the motivation for our research is the observation that there is a l...

The applications of manipulation tasks will soon move from caged robots in assembly lines to the more challenging household and collaborative ones that have to operate in dynamic and unpredictable environments. Due to the uncertainty of such environments, it is preferable to perform tasks in a reactive and robust fashion. Classic task execution architectures fail to do so in reasonable complexi...

The behavior of an asynchronous reactive system can be described by its set of action traces. In this paper, we investigate which properties a trace set fulfills describing a reactive system where input and output actions are distinguished. These properties reflect the fact that, for such a system, input actions can always occur. The required properties are discussed in the light of safety and ...

Recent approaches to integrity enforcement in active databases suggest not only to check for inconsistencies by triggers but also to utilize triggers to perform repair actions on constraint violations. Typically, respective repairing triggers are derived automatically from constraint specifications following almost fixed derivation strategies. However, in order to incorporate more semantic know...