在深入分析蓝牙的低功耗工作模式-呼吸模式基础上,提出用学习函数来近似估计主从对之间通信流分布。基于观测到的数据猝发到来之间时间间隔,取平均值获得可能的呼吸间隔值;根据缓冲区内滞留数据以及预测的下一次猝发数据流量引入一个代...在深入分析蓝牙的低功耗工作模式-呼吸模式基础上,提出用学习函数来近似估计主从对之间通信流分布。基于观测到的数据猝发到来之间时间间隔,取平均值获得可能的呼吸间隔值;根据缓冲区内滞留数据以及预测的下一次猝发数据流量引入一个代价模型来估量一个从对分配给它的时隙的占用率,从而进一步计算呼吸尝试时隙数,若满足条件将进入呼吸模式。仿真试验表明:相对于蓝牙始终活跃工作方式,该调度策略MISIP(MeanInter-arrival based Sniff Interval Policy)大约减少电源消耗38.6%。展开更多
用友账务管理软件安装过程复杂,安装时间长,安装多台机器更是费时费力。通过实践摸索,笔者成功解决了精简版XP不能安装IIS、配置IIS时出现500错误、SQL Server 2000未与信任SQL Server连接相关联、网络克隆后用友软件不能正常运行等技...用友账务管理软件安装过程复杂,安装时间长,安装多台机器更是费时费力。通过实践摸索,笔者成功解决了精简版XP不能安装IIS、配置IIS时出现500错误、SQL Server 2000未与信任SQL Server连接相关联、网络克隆后用友软件不能正常运行等技术难题,为多台机器快速安装用友账务管理软件提供了一种高效的解决方案。展开更多
With Zengcheng City, Guangdong Province, as the object of study, 200 soil sampling points were col ected for the spatial interpolation prediction of soil properties by using Kriging method and BP neural network method...With Zengcheng City, Guangdong Province, as the object of study, 200 soil sampling points were col ected for the spatial interpolation prediction of soil properties by using Kriging method and BP neural network method. After comparing the interpolation results with the measured values, the root mean square error of the prediction data was obtained. The results showed that the interpolation accuracy of BP neural network was higher than that of Kriging method under the same cir-cumstances, and there was no smoothness in using BP neural network method when there were few sample points. In addition, with no requirement on the distri-bution of sample data, BP neural network method had stronger generalization ability than traditional interpolation method, which was an alternative interpolation method.展开更多
文摘在深入分析蓝牙的低功耗工作模式-呼吸模式基础上,提出用学习函数来近似估计主从对之间通信流分布。基于观测到的数据猝发到来之间时间间隔,取平均值获得可能的呼吸间隔值;根据缓冲区内滞留数据以及预测的下一次猝发数据流量引入一个代价模型来估量一个从对分配给它的时隙的占用率,从而进一步计算呼吸尝试时隙数,若满足条件将进入呼吸模式。仿真试验表明:相对于蓝牙始终活跃工作方式,该调度策略MISIP(MeanInter-arrival based Sniff Interval Policy)大约减少电源消耗38.6%。
文摘用友账务管理软件安装过程复杂,安装时间长,安装多台机器更是费时费力。通过实践摸索,笔者成功解决了精简版XP不能安装IIS、配置IIS时出现500错误、SQL Server 2000未与信任SQL Server连接相关联、网络克隆后用友软件不能正常运行等技术难题,为多台机器快速安装用友账务管理软件提供了一种高效的解决方案。
基金Supported by the National Natural Science Foundation of China(40971125)the Science and Technology Planning Project of Guangdong Province,China(2012A020200006,2012B091100220)~~
文摘With Zengcheng City, Guangdong Province, as the object of study, 200 soil sampling points were col ected for the spatial interpolation prediction of soil properties by using Kriging method and BP neural network method. After comparing the interpolation results with the measured values, the root mean square error of the prediction data was obtained. The results showed that the interpolation accuracy of BP neural network was higher than that of Kriging method under the same cir-cumstances, and there was no smoothness in using BP neural network method when there were few sample points. In addition, with no requirement on the distri-bution of sample data, BP neural network method had stronger generalization ability than traditional interpolation method, which was an alternative interpolation method.
