human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent sets of papers co-cited by a source paper.

Details of the hypergraph:
Center node: "increasing sync rate of pulse coupled oscillators via phase response function design theory and application to wireless networks"
  Abstract: This brief addresses the synchronization rate of weakly connected pulse-coupled oscillators (PCOs). We prove that besides the coupling strength, the phase response function is also a determinant of the synchronization rate. Inspired by the result, we propose to increase the synchronization rate of PCOs by designing the phase response function. This has important significance in the PCO-based clock synchronization of wireless networks. By designing the phase response function, the synchronization rate is increased even under a fixed transmission power. Given that the energy consumption in synchronization is determined by the product of synchronization time and transmission power, the new strategy reduces energy consumption in the clock synchronization. QualNet experiments confirm the theoretical results.

Connected through hyperedge HE-1 (induced by source paper "synchronization of pulse coupled oscillators and clocks under minimal connectivity assumptions"):
  with members:
    - "synchronization of goodwin s oscillators under boundedness and nonnegativeness constraints for solutions"
    - "global synchronization of pulse coupled oscillators interacting on cycle graphs"
    - "robust self triggered coordination with ternary controllers"

Connected through hyperedge HE-2 (induced by source paper "global synchronization of pulse coupled oscillators interacting on cycle graphs"):
  with members:
    - "kick synchronization versus diffusive synchronization"
    - "on the scalability of cooperative time synchronization in pulse connected networks"

Question: Please tell me which class the center node belongs to. The 40 classes are: cs.NA(Numerical Analysis), cs.MM(Multimedia), cs.LO(Logic in Computer Science), cs.CY(Computers and Society), cs.CR(Cryptography and Security), cs.DC(Distributed, Parallel, and Cluster Computing), cs.HC(Human-Computer Interaction), cs.CE(Computational Engineering, Finance, and Science), cs.NI(Networking and Internet Architecture), cs.CC(Computational Complexity), cs.AI(Artificial Intelligence), cs.MA(Multiagent Systems), cs.GL(General Literature), cs.NE(Neural and Evolutionary Computing), cs.SC(Symbolic Computation), cs.AR(Hardware Architecture), cs.CV(Computer Vision and Pattern Recognition), cs.GR(Graphics), cs.ET(Emerging Technologies), cs.SY(Systems and Control), cs.CG(Computational Geometry), cs.OH(Other Computer Science), cs.PL(Programming Languages), cs.SE(Software Engineering), cs.LG(Machine Learning), cs.SD(Sound), cs.SI(Social and Information Networks), cs.RO(Robotics), cs.IT(Information Theory), cs.PF(Performance), cs.CL(Computation and Language), cs.IR(Information Retrieval), cs.MS(Mathematical Software), cs.FL(Formal Languages and Automata Theory), cs.DS(Data Structures and Algorithms), cs.OS(Operating Systems), cs.GT(Computer Science and Game Theory), cs.DB(Databases), cs.DL(Digital Libraries), cs.DM(Discrete Mathematics). Directly output the class name.

gpt: cs.SY(Systems and Control)