依据共享仓储货物定位精度准和盘点效率高的要求,提出了一种采用改进灰狼算法(Gray Wolf Optimization Algorithm)的货物动态盘点方法。通过射频识别技术和接收信号强度测距方法搭建了货物的三维定位模型;采用粒子群参数优化的灰狼算法...依据共享仓储货物定位精度准和盘点效率高的要求,提出了一种采用改进灰狼算法(Gray Wolf Optimization Algorithm)的货物动态盘点方法。通过射频识别技术和接收信号强度测距方法搭建了货物的三维定位模型;采用粒子群参数优化的灰狼算法对仓储货物的三维定位进行解算,实现共享仓储的自动盘点。仿真结果表明,改进的灰狼算法具有较好的定位精度和稳定的寻优性能,可以满足复杂动态环境下共享仓储货物盘点要求。展开更多
Objective To understand HIV rival suppression and drug resistance(HIVDR)among AIDs patients who were receiving antiretroviral treatment(ART)in Dehong prefecture,Yunnan province.Methods All AIDS patients aged over 15 y...Objective To understand HIV rival suppression and drug resistance(HIVDR)among AIDs patients who were receiving antiretroviral treatment(ART)in Dehong prefecture,Yunnan province.Methods All AIDS patients aged over 15 years and with experience more than six months on ART by the end of 2012 in Dehong prefecture,were enrolled to receive testing for HIV viral load in plasma and genetic mutations associated with HIVDR.展开更多
针对经典DV-HOP（distance vector-hop）算法中节点间跳数信息对定位精度有较大影响这一问题,提出了一种基于接收信号强度指示（receive signal strength indicator,RSSI）的改进算法。该定位算法引入了连续跳数的定义,首先利用RSSI测...针对经典DV-HOP（distance vector-hop）算法中节点间跳数信息对定位精度有较大影响这一问题,提出了一种基于接收信号强度指示（receive signal strength indicator,RSSI）的改进算法。该定位算法引入了连续跳数的定义,首先利用RSSI测距模型把直接邻居节点接收到的RSSI值转换为两节点之间的距离,再根据连续跳数的定义计算出两节点间的连续跳数。在相同的仿真网络环境里,与经典的DV-HOP算法相比,归一化定位误差降低了30%~45%;与其他改进定位算法相比,归一化定位误差也有不同程度的降低。仿真结果表明该改进算法大幅度地提高了定位精度。展开更多
文摘依据共享仓储货物定位精度准和盘点效率高的要求,提出了一种采用改进灰狼算法(Gray Wolf Optimization Algorithm)的货物动态盘点方法。通过射频识别技术和接收信号强度测距方法搭建了货物的三维定位模型;采用粒子群参数优化的灰狼算法对仓储货物的三维定位进行解算,实现共享仓储的自动盘点。仿真结果表明,改进的灰狼算法具有较好的定位精度和稳定的寻优性能,可以满足复杂动态环境下共享仓储货物盘点要求。
文摘Objective To understand HIV rival suppression and drug resistance(HIVDR)among AIDs patients who were receiving antiretroviral treatment(ART)in Dehong prefecture,Yunnan province.Methods All AIDS patients aged over 15 years and with experience more than six months on ART by the end of 2012 in Dehong prefecture,were enrolled to receive testing for HIV viral load in plasma and genetic mutations associated with HIVDR.
文摘针对经典DV-HOP（distance vector-hop）算法中节点间跳数信息对定位精度有较大影响这一问题,提出了一种基于接收信号强度指示（receive signal strength indicator,RSSI）的改进算法。该定位算法引入了连续跳数的定义,首先利用RSSI测距模型把直接邻居节点接收到的RSSI值转换为两节点之间的距离,再根据连续跳数的定义计算出两节点间的连续跳数。在相同的仿真网络环境里,与经典的DV-HOP算法相比,归一化定位误差降低了30%~45%;与其他改进定位算法相比,归一化定位误差也有不同程度的降低。仿真结果表明该改进算法大幅度地提高了定位精度。
