Sensor networks and networks of wearable communication systems (for example: networks that support emergency workers in their efforts) have strong requirements on their energy consumption. Instead of only focusing on minimization of energy consumption of the individual nodes (which leads to locally optimal solutions) it is important to maximize the lifetime of the whole network.
Phytocare Problem description The runoff water from greenhouses contains fertilizers and must be cleaned before it can be returned to the groundwater system. A means of doing this is to introduce algae into the water. The algae eat up the fertilizer and clean the water. Subsequently, the algae may be removed and sold as feed,