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This Introduction provides an overview of the topic covered in this special themed issue and discusses the contributions.
This presentation acts as an introduction to the Structural Eurocodes - giving a preliminary explanation to each of the 10 Eurocodes.
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... supporting heterogeneous sensor networks and integrating wireless sensor networks in the WWW. BTnodes are programmed in standard Embedded C using the BTnut API that provides a hardware abstraction layer [16,60]. Besides, the BTnodes hardware is also compatible to the TinyOS API. ...
... The default OS for the BTnode is the BTnut operating system, which is a simple OS written in C [10] (see Section 2.2.2 for more details). At DIKU a port of TinyOS, complete with a simple Bluetooth stack have been created [36]. ...
... At ETH they have developed an operating system for use with the BTnode called BTnut [10]. BTnut is based on Nut/OS 5 , an operating system for the Ethernut system. ...
... The first two Symbols we extract from our priority queue are y and 6 . These are used to create a new Node with the frequency 10 ...
A Wireless sensor network (WSN) consists of a potentially large number of sensor nodes with wireless-communication capabilities that work collaboratively to achieve a common goal. While every WSN application has specific requirements, there are some common basic services that any WSN must offer in order to support applications. There are available commercial WSN nodes offering such basic services, but they are still very expensive. So, we ask ourselves if it is possible to build a WSN node keeping low costs, while at the same time implementing these basic services: the answer is yes. We built sensor nodes and we call them WiSe-Nodes. In this paper we present the architecture of our WiSe-Nodes as well as the details about their hardware modules. We present also an hybrid MAC-routing protocol called WASP that implements the basic services of a WSN. Finally, as a tool for the WSN developers we introduce our simulator YAWSS that provides a controlled test environment where new WSN protocols can be tested and executed before implementing them in hardware.
