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436 results on '"Duan, Yucong"'

167. Estimating End-to-End Available Bandwidth for Cyber-Physical Applications in Hybrid Networks

Author

Yu Zhang, Qi Qi, Duan Yucong, Hui Zhou, and Ye Chunyang

Subjects
Transmission (telecommunications), End-to-end principle, Computer science, business.industry, Network packet, Key (cryptography), Bandwidth (computing), Cyber-physical system, The Internet, business, Host (network), Computer network
Abstract

Available bandwidth estimation is very important for network operators, users, and bandwidth-sensitive applications. In the last 20 years, various techniques and systems have been proposed to estimate end-to-end available bandwidth. They were mostly tested in simulation or inside small-scale networks, but they can’t consistently offer satisfying accuracy over the Internet. An active probing method SOProbe is proposed, and it measures end-to-end available bandwidth from only the installed host. The key idea of SOProbe is to identify the rate range where the available bandwidth resides. To archives this, SOProbe sends probe packets at selected transmission rates, and tries to catch the relationship between probe packets and available bandwidth.

Published
2017

183. Data, information, and knowledge-driven manipulation between strategical planning and technical implementation for wireless sensor network construction

Author

Xiaoxian Yang, Duan Yucong, Lixu Shao, Zhangbing Zhou, Xiaobing Sun, and Lifeng Yu

Subjects
Service system, Computer Networks and Communications, Computer science, business.industry, General Engineering, Information technology, 02 engineering and technology, lcsh:QA75.5-76.95, Data information, 020204 information systems, 0202 electrical engineering, electronic engineering, information engineering, Systems engineering, Design process, 020201 artificial intelligence & image processing, lcsh:Electronic computers. Computer science, business, Wireless sensor network
Abstract

To provide guidance to and integrate directly with the information technology side implementation to achieve coherent data, information, and knowledge coordination and robust value-oriented adaptability for maximization of business profitability, we propose to leverage the ideology of service economics to achieve bidirectional computational bridging between business planning and technical implementation of ubiquitous services/XaaS in the application program interface economy for promoting the macro-service market, especially in global value chains. Enlightened by value-driven design, we propose a systemic formalization from value calculation to design quality measurement which binds the technical modification and variation on design artifacts with business value strategy through a framework of managed quality properties in a wireless sensor network–based service system creation process. In the process of building a service system, we use data, information, and knowledge flow to abstract various data, information, and knowledge manipulation and usage scenarios. We propose to improve system reliability and robustness by managing data and information reuse, redundancy as well as structure.

Published
2017

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