In the present study, a physically-based hydraulic modeling tool and a data-driven approach using artificial neural networks (ANNs) were evaluated for their ability to simulate the fate and transport of microorganis...In the present study, a physically-based hydraulic modeling tool and a data-driven approach using artificial neural networks (ANNs) were evaluated for their ability to simulate the fate and transport of microorganisms in a water system. To produce reliable data, a pipe network was constructed and a series of experiments using a fecal coliform indicator (Escherichia coli 15597) was conducted. For the physically-based model, morphological (pipe size, link length, slope, etc.) and hydraulic (flow rate) conditions were used as input variables, and for ANNs, water quality parameters (conductivity, pH, and turbidity) were used. Both approaches accurately described the fate and transport of microorganisms (physically-based model: correlation coefficient (R) in the range of 0.914 - 0.977 and ANNs: R in the range of 0.949 - 0.980), with the exception of one case at a low flow rate (q = 31.56 cm^3/sec). This study also indicated that these approaches could be complementarily utilized to assess the vulnerability of water facilities and to establish emergency plans based on hypothetical scenarios.展开更多
对欧洲标准《建筑物外部排水和排污系统》(BS EN 752:2008)和中国标准《室外排水设计规范》(GB 50014—2006,2014年版)中的雨水设计和计算方法进行了对比分析。以罗安达地区KK项目的市政雨水工程设计为例,结合欧洲室外排水标准和中国室...对欧洲标准《建筑物外部排水和排污系统》(BS EN 752:2008)和中国标准《室外排水设计规范》(GB 50014—2006,2014年版)中的雨水设计和计算方法进行了对比分析。以罗安达地区KK项目的市政雨水工程设计为例,结合欧洲室外排水标准和中国室外排水设计规范的相关要求,利用暴雨管理模型对市政雨水管网进行模拟计算和分析。模拟10年和25年重现期的暴雨过程中地块的产汇流情况,计算雨水管网总出口1#明渠出口的洪峰流量,并将管网排出口的流量模拟结果与推理公式法进行比较,为KK项目市政雨水管网总出口1#明渠的设计提供可靠的数据支持。同时根据模拟结果,分析了KK项目市政雨水管网在10年和25年重现期下的溢流情况,为KK市政雨水管网的运行和二期雨水管网设计提供参考建议。展开更多
通信网络是输电线路在线监测系统的重要组成部分,关系到监测数据的完整性和安全性。由于现行通信网络在实际监测中的数据通信效果并不理想,吞吐量较低且丢包率较高,通信网络性能存在一定缺陷。为解决这一问题,文章提出基于5G的输电线路...通信网络是输电线路在线监测系统的重要组成部分,关系到监测数据的完整性和安全性。由于现行通信网络在实际监测中的数据通信效果并不理想,吞吐量较低且丢包率较高,通信网络性能存在一定缺陷。为解决这一问题,文章提出基于5G的输电线路在线监测通信网络设计。利用5G技术来设计输电线路在线监测的通信网络模型和信道,同时基于开放式系统互连(Open System Interconnect,OSI)参考模型来设计通信网络协议,从而完成基于5G的输电线路在线监测通信网络的整体设计。经实验验证,所设计的通信网络吞吐性能良好,丢包率在1%以下,输电线路在线监测通信效果良好。展开更多
文摘In the present study, a physically-based hydraulic modeling tool and a data-driven approach using artificial neural networks (ANNs) were evaluated for their ability to simulate the fate and transport of microorganisms in a water system. To produce reliable data, a pipe network was constructed and a series of experiments using a fecal coliform indicator (Escherichia coli 15597) was conducted. For the physically-based model, morphological (pipe size, link length, slope, etc.) and hydraulic (flow rate) conditions were used as input variables, and for ANNs, water quality parameters (conductivity, pH, and turbidity) were used. Both approaches accurately described the fate and transport of microorganisms (physically-based model: correlation coefficient (R) in the range of 0.914 - 0.977 and ANNs: R in the range of 0.949 - 0.980), with the exception of one case at a low flow rate (q = 31.56 cm^3/sec). This study also indicated that these approaches could be complementarily utilized to assess the vulnerability of water facilities and to establish emergency plans based on hypothetical scenarios.
文摘对欧洲标准《建筑物外部排水和排污系统》(BS EN 752:2008)和中国标准《室外排水设计规范》(GB 50014—2006,2014年版)中的雨水设计和计算方法进行了对比分析。以罗安达地区KK项目的市政雨水工程设计为例,结合欧洲室外排水标准和中国室外排水设计规范的相关要求,利用暴雨管理模型对市政雨水管网进行模拟计算和分析。模拟10年和25年重现期的暴雨过程中地块的产汇流情况,计算雨水管网总出口1#明渠出口的洪峰流量,并将管网排出口的流量模拟结果与推理公式法进行比较,为KK项目市政雨水管网总出口1#明渠的设计提供可靠的数据支持。同时根据模拟结果,分析了KK项目市政雨水管网在10年和25年重现期下的溢流情况,为KK市政雨水管网的运行和二期雨水管网设计提供参考建议。
文摘通信网络是输电线路在线监测系统的重要组成部分,关系到监测数据的完整性和安全性。由于现行通信网络在实际监测中的数据通信效果并不理想,吞吐量较低且丢包率较高,通信网络性能存在一定缺陷。为解决这一问题,文章提出基于5G的输电线路在线监测通信网络设计。利用5G技术来设计输电线路在线监测的通信网络模型和信道,同时基于开放式系统互连(Open System Interconnect,OSI)参考模型来设计通信网络协议,从而完成基于5G的输电线路在线监测通信网络的整体设计。经实验验证,所设计的通信网络吞吐性能良好,丢包率在1%以下,输电线路在线监测通信效果良好。