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- W3146227749 abstract "This paper describes a concurrency and an access control system which is running on a web based multimedia distance education environment A multimedia distance education system includes advanced services, coordination services, cooperation services, and media services. Advanced services consist of various subclass modules. This subclass module provides the basic services, while advanced services layer supports mixture of various basic services. Advanced services include creation/deletion of shared video window and of creation/deletion of shared window. Coordination services include session control module, and floor control module. Session control module controls the access to the whole session. Cooperation services include window overlays module, and window sharing module. There are two approaches to software architecture on which applications for a web based multimedia distance education environment are based. Those include CACV(Centralized-Abstraction and Centralized-View) and RARV(Replicated-Abstraction and Replicated-View). The environment of concurrency and access control is based on a hybrid software architecture which is adopting the advantage of CACV and RARV. Key-Words: concurrency and access control, a web based multimedia distance education system, advances services, coordination services, cooperation services CACV, RARV, hybrid software architecture." @default.
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- W3146227749 date "2005-01-01" @default.
- W3146227749 modified "2023-09-23" @default.
- W3146227749 title "A Concurrency and an Access Control System for a Web Based Multimedia Distance Education Environment" @default.
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