In this paper, we proposed a scheme based on Monte Carlo algorithm to test whether or not the nodes are redundant for realizing the node density control in the sensor network. The computational complexity is only O(n)...In this paper, we proposed a scheme based on Monte Carlo algorithm to test whether or not the nodes are redundant for realizing the node density control in the sensor network. The computational complexity is only O(n). We also established the coverage collision detection and back-off mechanism applied in the wireless sensor network. The simulation results show that the system can cover all the interested area with the smallest number of nodes and a coverage void will not appear during the course of state-transition. The coverage collision detection and back-off mechanism proposed in this article can be applied when the nodes have either synchronous or asynchronous mechanism. It also provides a stable stage with the length of the time that can be adjusted.展开更多
近年来,BIM(BIM:Building Information Model)技术在岩土勘察行业慢慢推广应用,成为一种新的信息表达手段。本文提出了"点-面-体"的地质体BIM模型的构建基本思想。首先对地质勘察的钻孔数据进行三维可视化,然后在此基础上,利...近年来,BIM(BIM:Building Information Model)技术在岩土勘察行业慢慢推广应用,成为一种新的信息表达手段。本文提出了"点-面-体"的地质体BIM模型的构建基本思想。首先对地质勘察的钻孔数据进行三维可视化,然后在此基础上,利用克里金算法以钻孔数据为样本数据插值拟合出三维地质层数据,最后根据三维地质层数据,采用三棱柱模型构建出三维地质体。实验效果表明,利用BIM技术构建的地质体三维模型能够直观表达出地质层的分布情况,为后期设计人员、施工人员的工作提供参考辅助信息,便于他们做出正确的决策。展开更多
文摘In this paper, we proposed a scheme based on Monte Carlo algorithm to test whether or not the nodes are redundant for realizing the node density control in the sensor network. The computational complexity is only O(n). We also established the coverage collision detection and back-off mechanism applied in the wireless sensor network. The simulation results show that the system can cover all the interested area with the smallest number of nodes and a coverage void will not appear during the course of state-transition. The coverage collision detection and back-off mechanism proposed in this article can be applied when the nodes have either synchronous or asynchronous mechanism. It also provides a stable stage with the length of the time that can be adjusted.
文摘近年来,BIM(BIM:Building Information Model)技术在岩土勘察行业慢慢推广应用,成为一种新的信息表达手段。本文提出了"点-面-体"的地质体BIM模型的构建基本思想。首先对地质勘察的钻孔数据进行三维可视化,然后在此基础上,利用克里金算法以钻孔数据为样本数据插值拟合出三维地质层数据,最后根据三维地质层数据,采用三棱柱模型构建出三维地质体。实验效果表明,利用BIM技术构建的地质体三维模型能够直观表达出地质层的分布情况,为后期设计人员、施工人员的工作提供参考辅助信息,便于他们做出正确的决策。
