“Open community” has aroused widespread concern and research. This paper focuses on the system analysis research of the problem that based on statistics including the regression equation fitting function and mathema...“Open community” has aroused widespread concern and research. This paper focuses on the system analysis research of the problem that based on statistics including the regression equation fitting function and mathematical theory, combined with the actual effect of camera measurement method, Prim’s algorithm and neural network to “Open community” and the applicable conditions. Research results show that with the increasing number of roads within the district, the benefit time gradually increased, but each type of district capacity is different.展开更多
Based on the principle of “pre-disaster prevention outweighs rescue during disasters”, this study targets areas threatened by natural disasters, and develops an automatic algorithm based on the Prim algorithm to ser...Based on the principle of “pre-disaster prevention outweighs rescue during disasters”, this study targets areas threatened by natural disasters, and develops an automatic algorithm based on the Prim algorithm to serve as an automatic identification system. In the face of natural disasters that disable key facilities in the region and prevent settlements from contacting the outside world or outsiders from sending rescuers to the settlements, the proposed system helps to identify whether these regions will become isolated areas and conduct disaster mitigation and relief resource allocation before any natural disaster in order to reduce potential disaster losses. An automatic identification system, based on the threshold of channel blocking due to broken roads and bridges, determines through the decision tree model and relevant patterns whether such regions will become isolated areas by identifying areas based on the results of model analysis. The proposed system’s identification results are verified by actual case histories and comparisons;the results can be used to correctly identify isolated areas. Finally, Microsoft Visual Studio C # and Google Map are employed to apply the results and to produce an information mode for the determination and decision support of isolated areas affected by natural disasters.展开更多
提出一种基于 prim 算法的改进配电网络规划方法,该方法将网络中负荷点间的最短路径当作已选路径,在采用 prim 算法求取最小生成树的过程中,将选中路径上的交叉点转化为负荷点,解决了 prim 算法不便于处理待选路径的交叉点的问题。该方...提出一种基于 prim 算法的改进配电网络规划方法,该方法将网络中负荷点间的最短路径当作已选路径,在采用 prim 算法求取最小生成树的过程中,将选中路径上的交叉点转化为负荷点,解决了 prim 算法不便于处理待选路径的交叉点的问题。该方法可用于多电源点的配电网络扩展规划。文中讨论了网络规划中线路权重的选取方法,并设计了适用于配电网络的节点—支路邻接表的数据存储结构。经实例验证,该方法可有效减小搜索空间并具有计算速度快等优点。展开更多
文摘“Open community” has aroused widespread concern and research. This paper focuses on the system analysis research of the problem that based on statistics including the regression equation fitting function and mathematical theory, combined with the actual effect of camera measurement method, Prim’s algorithm and neural network to “Open community” and the applicable conditions. Research results show that with the increasing number of roads within the district, the benefit time gradually increased, but each type of district capacity is different.
文摘Based on the principle of “pre-disaster prevention outweighs rescue during disasters”, this study targets areas threatened by natural disasters, and develops an automatic algorithm based on the Prim algorithm to serve as an automatic identification system. In the face of natural disasters that disable key facilities in the region and prevent settlements from contacting the outside world or outsiders from sending rescuers to the settlements, the proposed system helps to identify whether these regions will become isolated areas and conduct disaster mitigation and relief resource allocation before any natural disaster in order to reduce potential disaster losses. An automatic identification system, based on the threshold of channel blocking due to broken roads and bridges, determines through the decision tree model and relevant patterns whether such regions will become isolated areas by identifying areas based on the results of model analysis. The proposed system’s identification results are verified by actual case histories and comparisons;the results can be used to correctly identify isolated areas. Finally, Microsoft Visual Studio C # and Google Map are employed to apply the results and to produce an information mode for the determination and decision support of isolated areas affected by natural disasters.
文摘提出一种基于 prim 算法的改进配电网络规划方法,该方法将网络中负荷点间的最短路径当作已选路径,在采用 prim 算法求取最小生成树的过程中,将选中路径上的交叉点转化为负荷点,解决了 prim 算法不便于处理待选路径的交叉点的问题。该方法可用于多电源点的配电网络扩展规划。文中讨论了网络规划中线路权重的选取方法,并设计了适用于配电网络的节点—支路邻接表的数据存储结构。经实例验证,该方法可有效减小搜索空间并具有计算速度快等优点。
