This book comprehensively presents a recently developed novel methodology for analysis and control of time-delay systems. Time-delays frequently occurs in engineering and science. Such time-delays can cause problems (e.g. instability) and limit the achievable performance of control systems. The concise and self-contained volume uses the Lambert W function to obtain solutions to time-delay systems represented by delay differential equations.
The manipulation of databases is an integral part of a world which is becoming increasingly and pervasively information-focused. This book puts forward a suggestion to advocate preference queries and fuzzy sets as a central concern in database queries and offers an important contribution to the design of intelligent information systems. It provides a comprehensive study on fuzzy preference queries in the context of relational databases.
Le développement des technologies de l’Internet pour la construction et le partage des connaissances et la demande croissante de visibilité font évoluer les pratiques des chercheurs et les conduisent notamment à investir les nouveaux outils offerts par le web (archives ouvertes, wikis, blogs, réseaux sociaux…).