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To reduce the work load of network administrators, e.g., fault detection/recovery, performance analysis and security maintenance etc., knowledge-based intelligent support system for network administrator based on active information resource (AIR-NMS) have been proposed. In this paper, we describe some design pattern and some implemented examples of activated information resource (AIR) on network administration...
To reduce the loads imposed on network administrators, we have proposed AIR-NMS, which is a network management support system (NMS) based on Active Information Resource (AIR). In AIR-NMS, various information resources (e.g., state information of a network, practical knowledge of network management) are combined with software agents which have the knowledge and functions for supporting the utilization...
Motivated by performance evaluation of a computer communication system, we consider a renewal input, general service time, single-server, and infinite-capacity queuing system with generally distributed time-out threshold. We obtain two moment approximate formulas for the mean system performance measures (including the mean number of customers in the system and the mean response time) by using the...
We consider a single-server GI/G/1 queueing system with modified service mechanism. By modified service mechanism, we mean that the service time distribution (H0) for the customers arriving to find the system idle may be different from the service time distribution (H1) for the customers arriving to find the system busy. We present qualitative relationships among the performance measures in the system...
Due to the recent popularization of digital broadcasting systems, selective contents, i.e., users watching their selected contents, have attracted attention. For example, in a quiz program, a user selects his or her answer and watches the video content for the answer. Although the server can deliver programs that meet users?? preferences, clients have to wait until their selected contents are delivered...
Recently, Skype has been receiving considerable attention as a peer-to-peer (P2P) Internet telephony application. In Skype, a voice connection is established via super nodes chosen from among ordinary end-user nodes. User information such as an IP address and port number of an online Skype node is managed by super nodes in a decentralized manner where the number of super nodes changes dynamically...
In this paper, we propose a framework called application concentrator, which enables interconnection of multiple closed networks at an application level. Because of rapid development and deployment of advanced networking technologies, various social activities have been shifting onto a network, thus necessitating a technology for providing closed networks for real/virtual groups. In particular, interconnection...
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