As one of the methods of urban environmental assessment,sensitivity assessment of urban climatic environment can accurately reflect the problem areas of current urban climate and built environment through visual means...As one of the methods of urban environmental assessment,sensitivity assessment of urban climatic environment can accurately reflect the problem areas of current urban climate and built environment through visual means,and help cities to carry out sustainable transformation and renewal in the stock era to optimize the living environment.Taking the central urban area of Beijing as the research object,the sensitivity of climatic environment was evaluated by meteorological data and built environment element data.The results showed that the distribution of sensitive units showed a centrifugal radiation pattern of"high in the center and low in the periphery".Block units with high climate sensitivity were mostly concentrated in Xicheng District and Dongcheng District,accounting for 93%of the total number of units.Further research showed that complex built environment and lack of elements to regulate climatic environment were the main reasons for the poor local climatic environment in the region with high climate sensitivity.Finally,a comprehensive evaluation of the remolding capacity,renewal potential and future development intensity of different grades of climate sensitive units was given.The results will provide scientific reference for urban renewal and reconstruction under climatic and environmental changes,so as to promote urban sustainable development and improvement of living environment.展开更多
文章提出了一种基于地理信息系统(Geographic Information System,GIS)呈现的密集城区集中无线接入网络(Centralized Radio Access Network,CRAN)区分裂评估方法。该方法利用GIS技术,通过数据收集和参数GIS呈现,综合评估CRAN区域内微网...文章提出了一种基于地理信息系统(Geographic Information System,GIS)呈现的密集城区集中无线接入网络(Centralized Radio Access Network,CRAN)区分裂评估方法。该方法利用GIS技术,通过数据收集和参数GIS呈现,综合评估CRAN区域内微网格的业务需求和设备接入能力。通过现网环路带宽分析和判断是否需要分裂,制订最优匹配调整CRAN范围和CRAN分裂回传组网的方案,满足网络的健康发展和适应未来需求。该方法为密集城区CRAN网络规划和优化提供了科学的参考和决策依据。展开更多
基金Sponsored by General Project of Natural Science Foundation of Beijing City(8202017)Youth Talent Support Program of 2018 Beijing Municipal University Academic Human Resources Development(PXM2018_014212_000043)。
文摘As one of the methods of urban environmental assessment,sensitivity assessment of urban climatic environment can accurately reflect the problem areas of current urban climate and built environment through visual means,and help cities to carry out sustainable transformation and renewal in the stock era to optimize the living environment.Taking the central urban area of Beijing as the research object,the sensitivity of climatic environment was evaluated by meteorological data and built environment element data.The results showed that the distribution of sensitive units showed a centrifugal radiation pattern of"high in the center and low in the periphery".Block units with high climate sensitivity were mostly concentrated in Xicheng District and Dongcheng District,accounting for 93%of the total number of units.Further research showed that complex built environment and lack of elements to regulate climatic environment were the main reasons for the poor local climatic environment in the region with high climate sensitivity.Finally,a comprehensive evaluation of the remolding capacity,renewal potential and future development intensity of different grades of climate sensitive units was given.The results will provide scientific reference for urban renewal and reconstruction under climatic and environmental changes,so as to promote urban sustainable development and improvement of living environment.
文摘文章提出了一种基于地理信息系统(Geographic Information System,GIS)呈现的密集城区集中无线接入网络(Centralized Radio Access Network,CRAN)区分裂评估方法。该方法利用GIS技术,通过数据收集和参数GIS呈现,综合评估CRAN区域内微网格的业务需求和设备接入能力。通过现网环路带宽分析和判断是否需要分裂,制订最优匹配调整CRAN范围和CRAN分裂回传组网的方案,满足网络的健康发展和适应未来需求。该方法为密集城区CRAN网络规划和优化提供了科学的参考和决策依据。