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Knowledge is currently considered as a strategic resource for organisations. Most organisational knowledge is stored in knowledge objects with natural language contents, which should be managed in their original representation to facilitate proper access without losing its semantics. This work presents a knowledge representation model that provides an innovative structure for representing domain knowledge...
Domain ontologies are used in several document annotation and retrieval strategies for knowledge management systems. They help to improve semantic annotation and to provide context for information. Domain knowledge changes and grows over time as accumulated experiences and such evolution should be addressed by adding new terms in the ontology. In this paper, we propose an ontology evolution strategy...
Tangible Acoustic Interfaces (TAIs) are innovative acoustic Human-Machine Interaction devices. Exploiting a number of contact sensors distributed on a surface, the vibrational signal generated from the interaction between the surface and an object moved by the user is acquired and analyzed to recognize what the user is doing on the device. The usage of vibrational sensors naturally opens the way also...
The use of online arithmetic was often proposed for hardware implementations of complex digital-signal processing (DSP) algorithms. However, several important issues in the design process of such algorithms using online arithmetic are rarely discussed in the literature. This paper presents these issues and provides a methodology to analyze the behavior of networks of online arithmetic modules performing...
The paper describes a cooperative design system for a 3D virtual scene. The objective of the system is to allow multiple users to design a 3D scene cooperatively via a communication network. The system is based on a distributed layered architecture. At the application layer, a 3D cooperative design tool is implemented. The basic cooperative design operations include reading and saving a 3D scene,...
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