Richard Verhoeven

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In this paper we present a complete approach to programming sensor networks. The main contribution concerns the separation of three abstraction levels, viz., application level, network level and node level, leaving more room for standardization than with current practices. In addition we propose to program the network from an overall perspective rather than(More)
Optimizing performance of wireless sensor networks leads to trade-offs between local computation and communication. With the usage of on-node processing, the lifetime of the sensor nodes can be extended as raw data does not need to be sent out and logged by an external device. In this paper we present our approach for on-node processing of ECG signals to(More)
For people suffering from nocturnal epileptic seizures it is crucial to have a system that can detect such seizures in real-time. In this paper, we present a preclinical demonstrator for real-time detection of nocturnal seizures based on the heart rate. The system is built on the VITRUVIUS body sensor platform, which consists of a body hub (a smart phone)(More)
In young white-dune soils with a very low content of organic matter, the influence of organic fertilisation on microfauna, ciliates and nematodes, was investigated. Three fertilisers – straw, rabbit dung, and wheat bran – were added to the soil in order to mimic natural conditions in older dunes. Abundances of nematodes and ciliates were significantly(More)