城市高质量发展是我国面临的重大课题。数字信息化和CIM(City Information Modeling)技术的快速发展为城市高质量发展提供了新的机遇和路径。CIM平台是城市数字化转型的核心基础设施,具有全面性、智能化、可视化等优势,在城市高质量发...城市高质量发展是我国面临的重大课题。数字信息化和CIM(City Information Modeling)技术的快速发展为城市高质量发展提供了新的机遇和路径。CIM平台是城市数字化转型的核心基础设施,具有全面性、智能化、可视化等优势,在城市高质量发展中发挥着重要作用。但同时,也存在数据标准化、技术应用、应用推广等问题。为推动CIM平台在城市高质量发展中的应用,应加强顶层设计、加大投入、加强人才培养、营造良好应用环境。展开更多
Background Computer Generated Animations(CGA),when applied to three-dimensional(3D)city models(3DCM),can be used as powerful tools to support urban decision-making.This leads to a new paradigm,based on procedural mode...Background Computer Generated Animations(CGA),when applied to three-dimensional(3D)city models(3DCM),can be used as powerful tools to support urban decision-making.This leads to a new paradigm,based on procedural modeling,that allows the integration of known urban structures.Methods This paper introduces a new workflow for the development of high-quality approximations of urban models in a short time and enables facilities to be imported from other cities into a given city model,following specific generation rules.Results Thus,this workflow provides a very simple approach to observe,study,and simulate the implementation of models already developed in other cities,in a city where they are not yet adopted.Examples of these models include all types of mobility systems and urban infrastructure.Conclusions This allows us to perceive the environmental impact of certain decisions in the real world,as well as to carry out simple simulations to determine the changes that can occur in the flows of people,traffic,and other city activities.展开更多
River water quality models based on remote sensing information models are superior to pure water quality models because they combine the inevitability and risk of geographical phenomena and can take complex geographic...River water quality models based on remote sensing information models are superior to pure water quality models because they combine the inevitability and risk of geographical phenomena and can take complex geographical characteristics into account. A water quality model for forecasting COD has been established with remote sensing in- formation modeling methods by monitoring and analyzing water quantity and water quality of the Lijing River reach which flows through a complicated Karst mountain area. This model provides a good tool to predict water quality of complex rivers. It is validated by simulating contaminant concentrations of the study area. The results show that remote sensing information models are suitable for complex geography. It is not only a combined model of inevitability and risk of the geographical phenomena, but also a semi-theoretical and semi-empirical formula, providing a good tool to study organic contaminants in complicated rivers. The coefficients and indices obtained have limited value and the model is not suitable for all situations. Some improvements are required.展开更多
城市信息模型(City Information Modeling,CIM)可以从城市规划、城市管理、城市服务、城市安全等方面为智慧城市建设提供重要支撑。本研究采用文献综述法结合文献计量法梳理分析CIM应用现状、智慧城市发展历程,以及CIM助力我国智慧城市...城市信息模型(City Information Modeling,CIM)可以从城市规划、城市管理、城市服务、城市安全等方面为智慧城市建设提供重要支撑。本研究采用文献综述法结合文献计量法梳理分析CIM应用现状、智慧城市发展历程,以及CIM助力我国智慧城市建设的研究进展与趋势。结果表明:数字城市、三维城市及数字孪生等概念和技术的提出给智慧城市建设、发展和管理提供了更多的机会与方向,在CIM应用于智慧城市建设领域具有一定的研究前景。展开更多
文摘城市高质量发展是我国面临的重大课题。数字信息化和CIM(City Information Modeling)技术的快速发展为城市高质量发展提供了新的机遇和路径。CIM平台是城市数字化转型的核心基础设施,具有全面性、智能化、可视化等优势,在城市高质量发展中发挥着重要作用。但同时,也存在数据标准化、技术应用、应用推广等问题。为推动CIM平台在城市高质量发展中的应用,应加强顶层设计、加大投入、加强人才培养、营造良好应用环境。
基金project"Crowdsourcing Optimized Wireless Sensor Network Deployment(CRoWD)"of Dirección General de Investigaciones of Universidad Santiago de Cali under grant No.613-621119-852.
文摘Background Computer Generated Animations(CGA),when applied to three-dimensional(3D)city models(3DCM),can be used as powerful tools to support urban decision-making.This leads to a new paradigm,based on procedural modeling,that allows the integration of known urban structures.Methods This paper introduces a new workflow for the development of high-quality approximations of urban models in a short time and enables facilities to be imported from other cities into a given city model,following specific generation rules.Results Thus,this workflow provides a very simple approach to observe,study,and simulate the implementation of models already developed in other cities,in a city where they are not yet adopted.Examples of these models include all types of mobility systems and urban infrastructure.Conclusions This allows us to perceive the environmental impact of certain decisions in the real world,as well as to carry out simple simulations to determine the changes that can occur in the flows of people,traffic,and other city activities.
文摘River water quality models based on remote sensing information models are superior to pure water quality models because they combine the inevitability and risk of geographical phenomena and can take complex geographical characteristics into account. A water quality model for forecasting COD has been established with remote sensing in- formation modeling methods by monitoring and analyzing water quantity and water quality of the Lijing River reach which flows through a complicated Karst mountain area. This model provides a good tool to predict water quality of complex rivers. It is validated by simulating contaminant concentrations of the study area. The results show that remote sensing information models are suitable for complex geography. It is not only a combined model of inevitability and risk of the geographical phenomena, but also a semi-theoretical and semi-empirical formula, providing a good tool to study organic contaminants in complicated rivers. The coefficients and indices obtained have limited value and the model is not suitable for all situations. Some improvements are required.
文摘城市信息模型(City Information Modeling,CIM)可以从城市规划、城市管理、城市服务、城市安全等方面为智慧城市建设提供重要支撑。本研究采用文献综述法结合文献计量法梳理分析CIM应用现状、智慧城市发展历程,以及CIM助力我国智慧城市建设的研究进展与趋势。结果表明:数字城市、三维城市及数字孪生等概念和技术的提出给智慧城市建设、发展和管理提供了更多的机会与方向,在CIM应用于智慧城市建设领域具有一定的研究前景。
