The rationality of constructing diamster distribution model with Weibull function. in term of the weibull function characters, especially the surface of Weibull, were researched. The method to establish diamster distr...The rationality of constructing diamster distribution model with Weibull function. in term of the weibull function characters, especially the surface of Weibull, were researched. The method to establish diamster distribution model ac cording to PRM also was provided.展开更多
In a cognitive radio network, the secondary users can use the spectrum holes when the primary users do not utilize the spectrum, but they must vacant the spectrum when the primary users need to transmit data on the sp...In a cognitive radio network, the secondary users can use the spectrum holes when the primary users do not utilize the spectrum, but they must vacant the spectrum when the primary users need to transmit data on the spectrum. In other words, the primary users have higher priority over the secondary users. In this paper, backlog and delay distribution bounds for both primary users and secondary users are obtained. The analysis is based on stochastic network calculus, for which, stochastic service curves are t-n-st derived for both primary users and secondary users, and the network calculus independent case analysis approach is used to find the distribution bounds. Numerical results and simulation results are also presented and discussed.展开更多
The HLA(high level architecture)-based distributed interactive simulation uses interest management mechanism to reduce the traffic on network and improve the system scalability. Making region updating occur only when ...The HLA(high level architecture)-based distributed interactive simulation uses interest management mechanism to reduce the traffic on network and improve the system scalability. Making region updating occur only when needed can improve the interest management. Typically a static threshold is defined before simulation to trigger the region updating. Now a dynamic threshold is used to trigger region updating , the threshold is adapted by the real-time massage in simulation, named as update lifetime. The result of experiment shows that this policy can overcome the weak point of static threshold and can meet the requirements of bandwidth and simulation correctness.展开更多
This paper presents a PL-homotopy algorithm for zeroes of continuous self-mappings of the complex plane, proves the feasibility of the algorithm,establishes a sufficient condition for the computational convergence, an...This paper presents a PL-homotopy algorithm for zeroes of continuous self-mappings of the complex plane, proves the feasibility of the algorithm,establishes a sufficient condition for the computational convergence, and thereby sets up a result on the zero distribution of continuous functions. It provides a constructive approach to zero distribution problems.展开更多
文摘The rationality of constructing diamster distribution model with Weibull function. in term of the weibull function characters, especially the surface of Weibull, were researched. The method to establish diamster distribution model ac cording to PRM also was provided.
文摘In a cognitive radio network, the secondary users can use the spectrum holes when the primary users do not utilize the spectrum, but they must vacant the spectrum when the primary users need to transmit data on the spectrum. In other words, the primary users have higher priority over the secondary users. In this paper, backlog and delay distribution bounds for both primary users and secondary users are obtained. The analysis is based on stochastic network calculus, for which, stochastic service curves are t-n-st derived for both primary users and secondary users, and the network calculus independent case analysis approach is used to find the distribution bounds. Numerical results and simulation results are also presented and discussed.
文摘The HLA(high level architecture)-based distributed interactive simulation uses interest management mechanism to reduce the traffic on network and improve the system scalability. Making region updating occur only when needed can improve the interest management. Typically a static threshold is defined before simulation to trigger the region updating. Now a dynamic threshold is used to trigger region updating , the threshold is adapted by the real-time massage in simulation, named as update lifetime. The result of experiment shows that this policy can overcome the weak point of static threshold and can meet the requirements of bandwidth and simulation correctness.
基金This work is supported in part by the Foundation of Zhongshan University Advanced Research Centre Under Grant 87M1.
文摘This paper presents a PL-homotopy algorithm for zeroes of continuous self-mappings of the complex plane, proves the feasibility of the algorithm,establishes a sufficient condition for the computational convergence, and thereby sets up a result on the zero distribution of continuous functions. It provides a constructive approach to zero distribution problems.
