Network routing Energy efficiency 3 Routings 3 Graph theory 2 Packet loss 2 Aquifers 1 Caching 1 Congestion avoidance 1 Contact graph routing 1 Contact graphs 1 Costs 1 Damage detection 1 Data acquisition 1 Data packet 1 Delay 1 Delay tolerant networks 1 Delay-Tolerant Network 1 Delays 1 Detection scheme 1 Dijkstra 1 Distributed collaboration 1 Distributed consensus 1 Drops 1 Efficient communications 1 Energy utilization 1 Errors 1 Geo-statistics 1 Graph theoretics 1 Ground water level 1 Groundwater monitoring networks 1