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This invited session will occur during ICC'2000 and will focus on dealing with various issues relating to the reusability in web-based educational systems which are emerging as major concern among learning technology researchers. Increasing number of web-based educational systems are being developed in almost every discipline and most of these systems are custom made to individual needs of a particular course. Efforts are underway to develop criteria for reusability of such systems and attempts such as development of metadata, authoring tools and application of agents technology can be seen as major role players in this area.

The session will attempt to raise issues concerned with the practicality of such research efforts and will focus on implementations of emerging research.

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Knowledge-based systems are computer systems that represent and use knowledge to carry out a task. A task is a kind of job that is done. Tasks can be described at different levels of generality but sooner or later they are connected to the domain. A domain is a body of knowledge. It is either a field of academic study or a professional (for example medicine) area (internal medicine, health care, diets for diabetics,..). systems.

On the other side medical informatics is a major growth area in computer science. Knowledge applications are actually being found for computers every day in the health industry. For that reason it is not surprising that technologies like knowledge based systems should applied in this domain.

These were the two reasons for the session on Knowledge based systems in medicine.

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There has recently been a growing interest in the use of non-linear speech-processing techniques for improving the voice-services related to telecommunications systems. This interest is motivated by the belief that non-linear technology will allow some future voice-telecommunication services not available today. Several works have been published which demonstrate the significant potential for performance improvement of practical speech-processing applications through the use of non-linear techniques. The aim of this Special Session is to bring together researchers working on non-linear modeling techniques for speech processing applications at both Universities and industrial laboratories.

Topics to be covered in the special session include (but are not limited to):

• Speech Coding
• Speech Synthesis
• Speaker Identification & Verification
• Voice Analysis & Conversion
• Speech Recognition
• Speech Enhancement (including the use of Acoustic Echo & Noise Control)

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This session will focus on advances in auditory theory and computations for speech, music, and other complex sounds. Topics will include the latest findings and models for encoding of timbre and pitch of complex sounds, and binaural localization cues and algorithms. Also addressed are issues dealing with real-time implementations of auditory algorithms, and their applications in various industrial and military contexts ranging from manufacturing acoustics to MEMS interfaces and prosthetics. The session will also include invited talks on hardware realizations of the algorithms, both in analog VLSI and in DSP platforms.