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Pervasive computing has created both new business opportunities and new challenges for the modern enterprises. An innovated business application integration pattern for collaborated enterprises with the traits of the variability and equality was presented, in which the key challenge is that there is not the need of a headquarters to govern the whole business across the enterprises with the common...
There have been a number of efforts devoted to predicting or modeling TCP performance under the presence of various network defects with a statistic such as average TCP throughput. While the average TCP throughput is useful, it does not provide insight on the variability of results that may be seen across multiple end users. This paper reports on a simulation study to characterize the distribution...
In order to reduce the consumption of human and material resources in industrial control area, an intelligent power management system is designed and implemented based on the design idea of using out-of-band management devices to manage remote devices. C8051F340 is the core of hardware part, and task scheduling is implemented by operating system RTX51 in the software part. According to the test result,...
UDDI acts a very important role in the web service. It can be used to publish and lookup services. Most of the current UDDI models are centralized so that the performance will decrease if there are too many services to be registered or queried. In this paper, an interoperable model of distributed UDDI is proposed. The model divides whole UDDI servers into there types: root server, super domain server...
In its current art, peer-to-peer streaming solution has been mainly employed in the domain of live event broadcasting. In such a paradigm, users are required to simultaneously participate the streaming, which yields tremendous bandwidth pool to alleviate the server load. However, little effort has been paid to study the performance gain when peer-to-peer solution is deployed into the domain of Video-on-Demand...
Session initiation protocol (SIP), due to its simple architecture and well-defined content, is currently considered the premier signaling protocol for next generation networks (NGN). However, its simplicity will lead to serious security challenges in terms of privacy and integrity. Security mechanisms recommended by RFC3261 for SIP are either weak information protection methods or demand heavy computing...
Aimed at the problem of "Information Island" in electric power enterprise, a solution of a production information platform is proposed. This platform is customized for the electric power enterprise and it is great helpful for the management level. OPC technology is adopted to acquire real-time data from industrial control network, then the real-time data are introduced into management network...
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