human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge groups authors who co-authored the same paper.

Details of the hypergraph:
Center hyperedge (induced by source paper "Networking low-power energy harvesting devices: Measurements and algorithms"):
  Abstract: Recent advances in energy harvesting materials and ultra-low-power communications will soon enable the realization of networks composed of energy harvesting devices. These devices will operate using very low ambient energy, such as indoor light energy. We focus on characterizing the energy availability in indoor environments and on developing energy allocation algorithms for energy harvesting devices. First, we present results of our long-term indoor radiant energy measurements, which provide important inputs required for algorithm and system design (e.g., determining the required battery sizes). Then, we focus on algorithm development, which requires nontraditional approaches, since energy harvesting shifts the nature of energy-aware protocols from minimizing energy expenditure to optimizing it. Moreover, in many cases, different energy storage types (rechargeable battery and a capacitor) require different algorithms. We develop algorithms for determining time fair energy allocation in systems with predictable energy inputs, as well as in systems where energy inputs are stochastic.

Includes members:
  Member "Networking Low-Power Energy Harvesting Devices: Measurements and Algorithms":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "Panda: Neighbor Discovery on a Power Harvesting Budget")
  Member "ESC: Energy Synchronized Communication in sustainable sensor networks":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "Energy-efficient capture of stochastic events by global- and local-periodic network coverage")

Question: Please tell me which research area the co-authored paper (i.e., the source paper of the center hyperedge) belongs to. The 4 classes are: Computer science, Mathematics, Engineering, Economics, Psychology, Business. Directly output the class name.

gpt: Computer science