This paper gives an overview of the existing approaches to the hardware/software codesign of embedded systems. We discuss all the steps in the design trajectory. The common approach of adding dedicated hardware to accelerate the software (by way of a FPGA or ASIC coprocessor) is judged as not worth the effort. The multi-processor framework of ASIPs (application specific instruction set processo...

Recent developments in the eld of computer graphics will provide color scientists with a new set of design tools. Real-time shading will make it possible to interactively evaluate surfaces that exhibit complex variation in the direction and color of re ected light. New software simulation techniques will facilitate the prediction of these important surface re ection properties. Together these t...

With decision support systems, decision-makers analyse data in data marts extracted from production bases. The data-mart schema design is generally performed by expert designers (administrator or computer specialist). With data-driven, requirement-driven or hybrid-driven approaches, this designer builds a data-mart defining facts (analysis subjects) and analysis axes. This process, based on dat...

The layout of chemical plants has to take into consideration boundary conditions and requirements of many different engineering fields. In order to assist the design engineer at an early stage during the extended basic engineering, a system for computer aided plant design has been developed. It contains modules for •extended equipment models including equipment related piping and areas for main...

Existing knowledge-based CADICAM systems do not support creativity since they are based on fixed vocabularies which contain a set of pre-defined functional and design features, and use these to define a library of standard solutions which the designer can use to compose designs automatically. However, the essence of creative design is to create new features and adapt them to new problems. Our s...

An architecture for a process-plant CAD presented to serve as the framework for the of a data model based on the notion of aggregation. Structures, operations and handling mechanisms are introduced. system is discussion molecular constraint

In this paper, we focus on techniques for constraint-based design tasks with continuous variables in dynamic environments. We show how design spaces can be explored within an intelligent CAD system using a dynamic constraint satisfaction framework and a connict resolution paradigm. Navigation between diierent design spaces is controlled by assumptions the designer makes in situations of incompl...