1.1. Simple classifier system According to Holland [1], a non-learning classifier system consists of four principal components: 1. List of classifiers (population of classifiers) 2. List of messages that plays the role of a “message board” for communications and short term memory 3. Input interface (detector) that represents the environment state 4. Output interface (effector) that ensures inte...

as there is a rapid growth both in the number of power consumers and also the limitations energy resources, it is clearly accepted that the old version of power grid must change into smart grid from head to toe. one of the most important advantages of smart grid which makes it much more exclusive rather than other typical systems is the two-way connectivity between the utility and the costumers...

Virtual environments (VEs) offer more than just simulation; they allow us to create perceptual effects not feasible in the real world. Arising from perception research, one technique that can be used is visual masking: under certain temporal and spatial conditions a masking stimulus can be used to prevent explicit, visual awareness of a target stimulus although the target may still be processed...

We present a method to assess the reliability of a material operating in a dynamic environment. The dynamic environment is represented as a sequence of shocks governed by a self-exciting point process. Different distribution models for the time-to-failure of the material are suggested. The case of a piecewise exponential model where a Cox’s model is integrated to take into account the effect of...

A system for dynamic compilation under the Unix operating system is described. The basis of the system is an incremental assembler that can be used statically or during program execution to insert or replace a module in an executable image. All cross-module references are via offsets into a run-time symbol table. All generated code is independent of its location or the location of the symbol ta...

Grids are increasingly being used in applications, one of which is e-learning. As most of business and academic institutions (universities) and training centres around the world have adopted this technology in order to create, deliver and manage their learning materials through the Web, the subject has become the focus of investigate. Still, collaboration between these institutions and centres ...

Autonomous navigation is nowadays a popular field of research all over the world due to the great diversity of applications for which it can provide a solution. Most of these involve a need to carry out manipulations in areas where human presence is impossible, highly dangerous or otherwise impractical. For example NASA’s Sojourner, the small explorer robot that was used by Mars Pathfinder in 1...

In mobile multiple-access communications, not only the location of active users, but also their number varies with time. In typical analyses, multiuser detection theory is developed under the assumption that the number of active users is constant and known at the receiver, and coincides with the maximum number of users entitled to access the system. This assumption is often overly pessimistic, ...

A dynamic simulation package, which can accurately model the interactions between robots and their environment, has been developed. This package creates a virtual environment where various controllers and workcells may be tested. The simulator is divided in two parts: local objects that compute their own d y namic equations of motion, and a global coordinator that resolves interactive forces be...

This paper describes the model underlying a user interface prototyping system which is designed to support the creation of multi-user, interactive database visualisations. The context of the work is the automation of an air traffic control system; we are concerned with the user interface to the in-flight database. The model is based on active display agents which interact in real-time with the ...