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The ant colony algorithm is widely applied to optimize the complex problems in many fields with its features of being robust, parallel, flexible, demanding no artificial interference, and accurate. This paper discusses the application of the colony algorithm in the path search of the earthquake emergency rescue. We first construct a mathematical model for emergency rescue based on the earthquake disasters...
In cognitive radio systems, secondary users can be coordinated to perform cooperative spectrum sensing to overcome the hidden terminal problem. However, when the number of cooperative users tends to be very large, too many cooperative users will make the whole sensing time intolerantly long and huge consumption of system resource. In this paper, we studied optimal number of secondary users in cooperative...
WIMAX (Worldwide Interoperability for Microwave Access) is a promising new networking technology that potentially offers high speed and wide area wireless access services that complement consistently the 3G and WiFi access networks capabilities. The standard proposes an adaptive modulation scheme which allows WiMax nodes to communicate from various modulation coding schemes according to the link quality...
Ontology evolution is a familiar problem in ontology application. How to describe change requirement of the user is one of key elements in ontology evolution. Aiming at the problem that ontology change types canpsilat be presented exhaustedly, user defined ontology change is put forward to improve flexibility of change description in the paper. Ontology consistency restriction is given to assure the...
In this paper, firstly a new stable fuzzy adaptive controller based on optimal fuzzy reasoning methods is provided, whose adjustable parameters are output weights of defuzzication method. Secondly, a new method of optimal fuzzy reasoning is given, whose objective function includes rule weights. Thirdly, another new stable fuzzy adaptive controller based on the new method is provided, whose adjustable...
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