Sala de reuniões, edif. E 22 de Julho de 2009 11:00
Shashi Prabh e Melek Attia são os oradores convidados para a próxima sessão do CISTER SEMINAR SERIES, que decorre esta quarta-feira, 22 de Julho, na sala de reuniões do edif. E.
Talk 1
TÍTULO: "Data Aggregation and Data Dissemination in Wireless Sensor Networks"
RESUMO Data aggregation refers to the process of synthesizing information from multiple data sources. This talk will discuss the use of data aggregation in wireless sensor networks (WSN). It will introduce the fundamentals of data-centric networking and its application to data aggregation methods suited for WSN. It will present an overview of some of the WSN data aggregation systems developed previously. Data dissemination is a complimentary process of data aggregation. This lecture will discuss some of the issues related to efficient data dissemination in WSN.
ORADOR Shashi Prabh received the B.Sc (Hons.) degree from Banaras Hindu University in 1993, M.S. degrees in Physics from I.I.T. Delhi and Boston College in 1995 and 1998, respectively, the M.S. degree in Computer Science from New York University in 2001 and the Ph.D. degree in Computer Science from the University of Virginia in 2007. He joined the School of Engineering (ISEP) at the Polytechnic Institute of Porto (IPP) as Research Associate in the Real-Time Computing Systems Research Center (CISTER) in 2007. His research interests are in Computer Networks and Real-Time Systems. His current research is focused on distributed packet scheduling algorithms, network architecture and protocols for real-time wireless sensor networks.
Talk 2
TÍTULO: “Adaptive Hierarchical Real-time Systems"
RESUMO The complexity of today''''s real-time systems imposes new design methods. A complex system is decomposed into smaller sub-systems designed independently and implemented using interfaces that abstract their resource requirements. To generate the whole system, abstractions are composed with each other. This composition builds tree-systems called hierarchical real-time systems. Generally hierarchical systems are analyzed using offline techniques assuming worst-case execution times (WCET) and passing over preemption costs. Those static techniques cannot fulfill the requirements of hierarchical systems qualified as open systems since they work in dynamic environment.
In this talk, I will try to present some open problems related to hierarchical real-time systems and propose some solutions'''' perspectives.
ORADOR Melek Attia has an Engineering Degree in Telecommunications (2006) from The Higher School of Communications of Tunis (SUP’COM). In 2006, he had a short experience with IPP-Hurray! Research Group and worked on Collision-Free Beacon Scheduling Mechanisms for IEEE 802.15.4/Zigbee Cluster-Tree Wireless Sensor Networks. He spent almost 3 years, in Tunisia, working for Cisco and Microsoft partners as a Network Engineer (Unified Communications Specialist). He rejoined CISTER/IPP-HURRAY in May 2009 and his current research area includes Compositional Real-Time Scheduling and Hierarchical Real-Time Systems.
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ENTRADA LIVRE!
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Instituto Superior de Engenharia do Porto