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
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
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
随着社会的进步和发展,城市的规模也在壮大,城市管理方面也面临了严峻挑战。CIM(City Information Modeling)平台,又称城市信息模型平台,具备多源异构数据融合能力、多维度空间分析能力、大数据分析计算能力和多终端支持能力。是提升城...随着社会的进步和发展,城市的规模也在壮大,城市管理方面也面临了严峻挑战。CIM(City Information Modeling)平台,又称城市信息模型平台,具备多源异构数据融合能力、多维度空间分析能力、大数据分析计算能力和多终端支持能力。是提升城市管理质量和城市管理模型创新中的核心平台,近年来,行业内专家和学者对CIM平台进行了大量的研究工作,且CIM平台的建设要求已纳入国家“十四五”规划。CIM平台可为城市从规划、建设、管理、治理到运营的闭环业务场景提供技术保障,是推动城市治理体系和治理能力现代化的必然选择。展开更多
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.
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。
文摘随着社会的进步和发展,城市的规模也在壮大,城市管理方面也面临了严峻挑战。CIM(City Information Modeling)平台,又称城市信息模型平台,具备多源异构数据融合能力、多维度空间分析能力、大数据分析计算能力和多终端支持能力。是提升城市管理质量和城市管理模型创新中的核心平台,近年来,行业内专家和学者对CIM平台进行了大量的研究工作,且CIM平台的建设要求已纳入国家“十四五”规划。CIM平台可为城市从规划、建设、管理、治理到运营的闭环业务场景提供技术保障,是推动城市治理体系和治理能力现代化的必然选择。
