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In this paper, we focus on the problem that analysis and verification tools' inconvenience to extract textual AADL architecture model, and put forward AADL model parser which converts AADL architecture model to AADL architecture model object. Based on AADL meta-model, we use EMF to generate the classes of AADL elements, while using ANTLR to implement the lexer and parser of AADL. And then we implement...
the paper first analyzes the basic theory of the CDN (Content Delivery Network) audio and video system and the P2P (peer to peer) audio and video system, and presents its own limitations of each kind of the architecture. Then a hybrid model has been proposed, which integrates CDN and P2P to build the audio and video public network platform. The paper describes the architecture of the hybrid model,...
The rapid development of computer network has greatly popularized online education, and the size of courseware is getting bigger. How to manage those resources is an urgent problem to be solved. This paper establishes a distributed courseware resource management system with P2P and CDN transmitting technology, providing highly concurrent VOD and distribution for numerous video courseware data, to...
On-demand broadcast is an effective data dissemination approach for mobile computing. Currently most of recent studies on on-demand broadcast consider a restrictive case of single-item requests of mobile clients. In this paper, we extend on-demand broadcast to cater for multi-item requests with timing constraints. We argue for the case of aggregation of data requests to minimize the broadcast bandwidth...
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