Ioakeim K. Samaras

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This paper proposes an advanced middleware solution to the problem of integrating a Wireless Sensor Network into the information system of an enterprise at a high abstraction level. This is achieved by using the proposed middleware which provides to the wireless sensors a Service Oriented Architecture connection to the Internet. The proposed middleware is(More)
In this paper, a modification of the protocol stack of the device profile for web services (DPWS) is proposed which can be applied in wireless sensor networks (WSNs) that comply with the IPv6 over low-power wireless personal area networks (6LoWPAN) architecture. The modification is based on a new format for the DPWS message exchanges without prohibiting the(More)
This paper proposes an advanced two-part middleware solution to the problem of integrating resource constrained devices located in the field of factory automation, such as Wireless Sensor Networks, into an enterprise information system. These networks seem to present the most difficult part to be integrated into such information systems. The first part of(More)
A fuzzy rule-based and energy-efficient method for estimating the free size of parking places in smart cities is proposed. In particular, the estimation is the output value of a fuzzy inference system (FIS) which was implemented on each wireless sensor mote (WSM) of a wireless sensor network (WSN) placed in the ground below the parking places and it was(More)
The benefits of utilizing service oriented architectures (SOA) in industrial automation are well recognized. Nevertheless these architectures imply connection establishments and message exchanges with a large amount of overhead which is inappropriate when considering the real time characteristics of an industrial application. Furthermore, wireless sensor(More)
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