基于网络分析法的陕南地区县城开敞空间分布特征研究——以安康市汉阴县为例

基于陕南地区县城建设用地狭长、空间分布相对分散等问题,本文提出应关注县城开敞空间分布的合理性。利用GIS中的网络分析法,对汉阴县城开敞空间分布进行分析,得出空间分布不均衡,服务范围存在空间差异等问题,进而提出有针对性的规划建议。     

航向角BP神经网络自整定PID控制算法仿真

设计了基于BP神经网络的自整定PID控制算法,此控制算法不需要被控对象的数学模型,先由BP神经网络对被控对象进行辨识,给出PID控制所需要的3个参数,再由PID控制算法进行有效的控制,最后用MATLAB对某水下机器人的航向角模型进行了仿真验证。     

无线流媒体服务系统的设计与实现

为了满足移动用户对视频服务的需求,设计了无线流媒体系统．该系统采用AVS_M视频标准压缩视频文件,并将压缩文件以3GP文件格式存放于服务器．系统通过RTSP协议控制流媒体播放,SDP协议描述流媒体会话,RTP／RTCP协议传输和控制3GP流媒体数据．在NS2通信系统仿真软件和实验平台测试结果表明, 设计的系统能够更好服务于流媒体传输与终端回放．     

基于ARM的便携式网络探测器的设计与实现

本文设计了一种基于ARM和嵌入式实时操作系统的便携式网络性能测量仪,采用了分布式网络测量方案.该方案可精确测量网络时延、带宽和丢包率,可使网络性能测量系统更便携.     

嵌入式系统的网络接口模块设计

嵌入式操作系统Linux的网络接口模块,通过对DM9000的正确寻址、设置其工作模式实现DM9000与S3C2410间的连接和转换,并将接收信号线RX 、RX-和发送信号线TX 、TX-经隔离变压器与以太网水晶接头RJ45相连以实现二者的连接.接口模块包括TCP/IP协议软件和以太网芯片DM9000驱动程序两部分.     

视频监控系统浅析

视频监控系统经历了模拟视频监控、基于PC的数字视频监控及基于视频服务器的远程网络数字视频监控三代.其系统应用涉及到数字视频编码和网络传输协议.该系统用于部门的监视和报警,公共场所监控和防范等.     

Voltage stability monitoring of power systems using reduced network and artificial neural network

This paper presents network reduction based methodologies to monitor voltage stability of power systems using limited number of measurements. In a multi-area power system, artificial neural networks (ANNs) are used to estimate the loading margin of the overall system, based on measurements from the internal area only. Information regarding the important measurements from the external areas is considered in measurement transformation through the network reduction process, to enhance the estimation accuracy of the ANNs. A Z-score based bad or missing data processing algorithm is implemented to make the methodologies robust. To account for changing operating conditions, adaptive training of the ANNs is also suggested. The proposed methods are successfully implemented on IEEE 14-bus and 118-bus test systems.     

基于贝叶斯网络的某金属矿山风险分析

为了使金属矿山安全管理人员能更有效地对矿山进行风险管理。通过对采矿区间事故数据的统计,依据事故后果严重程度确定其权重值,建立矿山事故灾害事故树模型,并将其转换为贝叶斯网络,对各类生产事故条件概率进行计算。将计算结果与矿山其后几年生产事故数据进行比较,该风险分析模型能有效对矿山事故进行分析。     

SmartRoads: tracing the limits of managing road space at the metropolitan road network scale

The task of (re)allocating existing road space has been pushed to the fore in traffic management. In Melbourne, Australia, the rise of “network operating planning” indicates renewed vigour for planners to wrestle with the challenge of managing road space at the network level—highlighted by the creation of SmartRoads. Tracing this and prior frameworks in Melbourne’s history reveals recurrent issues related to governance, cyclical debates, poor continuity and competing priorities. The issues collectively speak to a tension common in the road space allocation task: accounting for finer-grained road space use details and acknowledging small changes have network level implications. Although playing out differently depending on city, engaging the tension is central to making better informed road space allocation decisions.     

产业园区高清卡口智能协同监控系统设计与实施

高清卡口智能协同监控系统采用数字高清摄像机采集进出入园区车辆的图像信息,通过公安专用光纤网络协同传输至公安局指挥中心的数字分析系统,进行信息协同处理和信息协同发布与更新,及时发现布控车辆及犯罪嫌疑人员,实现快速处置。