Investigation of the consumer electronics bus

The objectives of this dissertation are to investigate the performance of the Consumer Electronics Bus (CEBus) and to develop a theoretical formulation of the Carrier Sense Multiple Access with Contention Detection and Contention Resolution (CSMA/CDCR) with three priority classes protocol utilized by the CEBus A new priority channel assigned multiple access with embedded priority resolution (PAMA/PR) theoretical model is formulated. It incorporates the main features of the CEBus with three priority classes. The analytical results for throughput and delay obtained by this formulation were compared to simulation experiments. A close agreement has been found thus validated both theory and simulation models Moreover, the performance of the CEBus implemented with two physical media, the power line (PL) and twisted pair (TP) communication lines, was investigated by measuring message and channel throughputs and mean packet and message delays. The router was modeled as a node which can handle three priority levels simultaneously. Satisfactory performance was obtained. Finally, a gateway joining the CEBus to ISDN was designed and its perfor-mance was evaluated. This gateway provides access to ISDN-based services to the CEBus. The ISDN and CEBus system network architecture, gateway wiring, and data and signaling interface between the CEBus and ISDN were designed, analyzed, and discussed. Again, satisfactory performance was found

Design of a Situation Aware Service for Internet of Things

The Internet of Things (IoT) operates solely on local interactions among its components, which include various devices with communications capabilities. Because the IoT is a fully distributed computing network, it is important to mitigate any negative effects resulting from faults occurring in its components and to provide sustainable services. This paper focuses on fault management of IoT services. In particular, it handles a fault management scheme for the self-organizing software platform (SoSp), a platform on which IoT services connected to various IT devices are deployed. The proposed fault management scheme enables SoSp to provide situation aware IoT services without loss of data and state

Database Systems for Advanced Applications17th International Conference, DASFAA 2012, International Workshops: FlashDB, ITEMS, SNSM, SIM3, DQDI, Busan, South Korea, April 15-19, 2012. Proceedings /

XXIV, 336p. 149 illus.online resource

Database Systems for Advanced Applications17th International Conference, DASFAA 2012, Busan, South Korea, April 15-19, 2012, Proceedings, Part II /

XVIII, 320p. 159 illus.online resource

Database Systems for Advanced Applications17th International Conference, DASFAA 2012, Busan, South Korea, April 15-19, 2012, Proceedings, Part I /

XXII, 595p. 250 illus.online resource