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: "mobile academy a ubiquitous mobile learning mlearning platform"
  Abstract: The paper reports on an ongoing research project into the development of "Mobile Academy", an Android-based mobile learning (mLearning) application (app). The project comprises three major phases: requirement analysis, application development and testing and evaluation. To satisfy the user requirement analysis, a detailed ethnographic study was conducted to investigate how people from different background use mobile devices for learning purposes. The initial analysis and evaluation of the first version of the projected app demonstrates very promising results. Making use of the app seemed to have, in general, a positive dimension in facilitating educational use of mobile devices.

Connected through hyperedge HE-1 (induced by source paper "blockchain of things bcot the fusion of blockchain and iot technologies"):
  with members:
    - "lapps technological legal and market potentials of blockchain lightning network applications"
    - "atomic cross chain swaps development trajectory and potential of non monetary digital token swap facilities"
    - "challenges of internet of things and big data integration"
    - "a novel approach for network attack classification based on sequential questions"
    - "application of blockchain in booking and registration systems of securities exchanges"
    - "a survey of distributed certificate authorities in manets"
    - "internet of nano things things and everything future growth trends"
    - "a recruitment and human resource management technique using blockchain technology for industry 4 0"

Connected through hyperedge HE-2 (induced by source paper "internet of nano things things and everything future growth trends"):
  with members:
    - "internet of things survey on security"
    - "applications of blockchain technology beyond cryptocurrency"
    - "challenges of internet of things and big data integration"
    - "application of blockchain in booking and registration systems of securities exchanges"
    - "a recruitment and human resource management technique using blockchain technology for industry 4 0"
    - "a framework for android based shopping mall applications"
    - "multilingual website usability analysis based on an international user survey"
    - "user interface ui design issues for multilingual users a case study"

Connected through hyperedge HE-3 (induced by source paper "cross cultural usability issues in e m learning"):
  with members:
    - "cultural economic and societal impacts on users behaviour and mobile broadband adoption trends"
    - "impacts of culture and socio economic circumstances on users behavior and mobile broadband technology diffusion trends"
    - "a review on internet of things iot internet of everything ioe and internet of nano things iont"

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.CY(Computers and Society)