This paper describes a hybrid CARV software architecture that is running on situation-aware middleware for a web based distance education system which has an object with a various information for each session. There are two approaches to software architecture on which distributed, collaborative applications are based. Those include CACV(Centralized-Abstraction and Centralized-View) and RARV(Replicated-Abstraction and Replicated-View). We propose an adaptive concurrency control QOS agent based on a hybrid software architecture which is adopting the advantage of CACV and RARV for situation-aware middleware.


Ubiquitous Computing Concurrency Control Centralize Architecture Floor Control Collaborative Application 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • SoonGohn Kim
    • 1
  • Eung Nam Ko
    • 2
  1. 1.Division of Computer and Game ScienceJoongbu UniversityChungnamKorea
  2. 2.Division of Information & CommunicationBaekseok UniversityChungnamKorea

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