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Cluster analysis is important in scientific and industrial fields. In this study, we proposed a novel chaotic biogeography-based optimization (CBBO) method, and applied it in centroid-based clustering methods. The results over three types of simulation data showed that this proposed CBBO method gave better performance than chaotic particle swarm optimization, genetic algorithm, firefly algorithm,...
This paper proposes CPERS, a contextual and personalized event recommender system that exploits overall user preference and context influences to produce recommendations in event-based social networks (EBSNs). Diversely from items in traditional recommendation scenarios (e.g. movies, songs), events in EBSNs are only valid for a short period of time, having no explicit feedback. Therefore the event...
We obtained the bone scaffolds general constitutive and seepage governing equations based on conservation of energy and Darcy's laws under fluid-solid-thermo multi-physics fields. Furthermore, we have also established the full coupling mathematical models of bone scaffolds under fluid-solid-thermo multi-physics fields. Based on these formulae in the COMSOL finite element platform, we have analyzed...
Based on a PWL memristor, Chua's circuit is modified through element replacement, simulation results demonstrated that chaos attractor can be generated in the modified Chua's circuit.
This paper deals with steering control problem of a computer simulated model car with fuzzy control approach. For simulating the real environment, the stochastic behavior of system is considered as multiplicative noise term. In addition, the external disturbance effect on system is also discussed for achieving attenuation performance by applying passivity theory. Through using the Takagi-Sugeno (T-S)...
In this paper, a predator-prey model with Beddington-DeAngelis function response and diffusion is studied. Uniform persistence of the system is discussed . The sufficient condition of local asymptotic stability and global asymptotic stability of the positive equilibrium is showed . Then, stability of the system is Simulated by Matlab.
Global warming and energy shortage are mankind's greatest challenge in the recent years. The solution to this urgent crisis lies in replacing fossil fuel with renewable energy. One of the most attractive types of renewable energy is solar cell technology, and it is already being deployed around the world. Among many type of solar cells, thin film amorphous silicon (a-Si) solar cell is one of the candidate...
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