This paper begins with the comparison of the messagesending mechanism, for communication among agents, and the methodinvocation mechanism, for communication among objects. Then, we describe an extension of the method-invocation mechanism by introducing the notion of “sender” of a message, “state” of the interaction and “protocol” using the notion of “role”, as it has been introduced in the powe...

The focus of this paper is to devise a service-oriented architecture for multi-agents system (called SAM), to reach a wide adoption and routine use of agents, web services, and semantic web technologies. In order to better integrate agents, web applications and information sources in an open and distributed environment such as the Internet, a service matchmaker called middle agent is responsibl...

Myocardial bridge is a benign congenital anomaly in which a segment of major epicardial coronary arteries descends into the myocardium for a variable distance. Myocardial bridge is most often single and located in the middle part of the left anterior descending artery. The presence of more than one myocardial bridge in coronary arteries is very rare. We present a patient with more than one myoc...

myocardial bridging with systolic compression of the left anterior descending coronary artery (lad) may be associated with myocardial ischemia. in symptomatic myocardial bridging unresponsive to medical treatment, surgical unroofing of the left lad can be performed. little information is available about the long-term prognosis of patients with this coronary anomaly after the surgical unroofing,...

This paper addresses the issue of the efficient interworking between a Wireless Local Area Network (WLAN) and a Wireless Metropolitan Area Network (WMAN), in particular High Performance Local Area Network (HiperLAN) and High Performance Metropolitan Area Network (HiperMAN) standards. The dual mode interworking must guarantee Quality of Service (QoS) through the whole system. One of the main con...

We introduce a design-based research framework, learning axes and bridging tools, and demonstrate its application in the preparation and study of an implementation of a middle-school experimental computer-based unit on probability and statistics, ProbLab (Probability Laboratory, Abrahamson and Wilensky 2002 [Abrahamson, D., & Wilensky, U. (2002). ProbLab. Northwestern University, Evanston, IL: ...

To support a wide range of multimedia services future fixed and wireless broadband network capabilities should allow the distribution of service functions between the customer terminals and the network nodes. Intelligent Networks (IN) can be considered as the bridging technology between the customer based service management and the service execution in the networks. Considering the mobile and b...

The form of the De bye-Waller factor in EXAFS is discussed in detail, and an expression is obtained for this factor in a general three-atom system of Cs symmetry. The normal modes which contribute to the De bye-Waller factors for each scattering path are dependent on the symmetry of the system. A series of model three-atom systems with C 2" symmetry are studied and the DebyeWaller factors as a ...