7 results about "Large city" patented technology

The invention discloses a tough city evaluation method based on climate and biodiversity coupling and application. The evaluation method comprises the following steps: S1, determining a biodiversity index of a city to be analyzed; s2, based on a weight prediction model, determining a climate partition weight coefficient of the biodiversity index in a future time period; s3, an index evaluation value BRI is obtained through calculation by means of the biodiversity index and the climate partition weight coefficient, and the larger the index evaluation value BRI is, the higher the city toughness is; according to the method, the climatic factors and the biodiversity are subjected to coupling analysis, the weight prediction model is established to predict the biodiversity index in the future time period, the toughness of the urban biodiversity can be quantified, the limitation of static evaluation of an original evaluation method is solved, accurate evaluation of climatic partition adaptation is realized, and the evaluation efficiency is improved. A tough city evaluation system with better ecological adaptability is constructed, and a scientific tool is provided for global cities to cope with climate changes.

The invention belongs to the technical field of logistics transportation, and discloses a subway-based underground logistics system pilot network planning method, and the specific technical scheme is that the method comprises the steps: S1, improving a node-place model, and designing a subway-based underground logistics system node planning model; s2, establishing an index system of the underground logistics system node planning model based on the metro, evaluating whether each metro station is suitable for pilot layout of underground logistics or not, and dividing types; s3, based on a model evaluation result, setting targets of network connectivity, shortest total mileage and lowest node redundancy, and constructing an underground logistics system pilot network based on a subway; according to the method, through structured process design and a scientific model tool, a planning scheme of an underground logistics system pilot network based on a subway can be visually and effectively given, and guidance is provided for staged sustainable promotion of underground logistics system construction of a large city.

The application belongs to the technical field of city planning, and discloses a vertical elevation calculation method and device for super-large cities and a calculation equipment. The processed geographic spatial data in the research range is acquired to perform hydrological analysis and slope analysis, obtain catchment partition and slope analysis data, and determine the slope type of each catchment partition through the superposition of the catchment partition and the slope analysis. The rainwater discharge path of each catchment partition is drawn in combination with the slope type of each catchment partition, a calculation point is determined, and the current elevation value of each calculation point is extracted. The design elevation of each calculation point is determined in combination with the elevation of the rainwater discharge port and the current elevation of the calculation point, and finally the target terrain raster data of the design is generated. The city vertical planning control point is determined through the road traffic data, and the control elevation of the control point is determined. The example of the application can provide a calculation reference for the vertical planning of the whole city through the vertical planning control point, and solves the problem that the vertical planning lacks overall consideration.

The invention discloses a city vertical overall planning method and device, equipment, a medium and a product. The method comprises the steps of obtaining current situation basic data and planning basic data of a target city; according to the current situation basic data and the planning basic data, determining the lowest construction elevation of each region in the target city based on flood risk assessment; under the constraint of the lowest construction elevation, performing vertical planning partition division on the target city according to a preset partition division element and a partition division principle; and formulating a corresponding partition management and control strategy for each vertical planning partition. By the adoption of the technical means, global vertical planning and global overall planning of the city can be achieved, the problem of fragmentation of vertical planning of the oversized and extra-large city is solved, the use efficiency of urban space resources is improved, and flood disasters are effectively dealt with.

This invention discloses a method and platform for evaluating the resilience of towns and villages on the outskirts of large cities. The method includes steps such as constructing a multi-level evaluation index system, acquiring and processing evaluation data, calculating index weights, and obtaining evaluation results. It establishes a multi-level index system encompassing economic resilience, social resilience, ecological resilience, and infrastructure resilience. Relevant literature data is acquired using web crawling technology and semantic analysis models. The final indicators are selected using the TF-IDF algorithm, and the index weights are calculated using the information entropy method. Finally, the evaluation results are obtained using the fuzzy comprehensive evaluation method. This method automates the evaluation process, enabling rapid and accurate assessment of the resilience level of towns and villages on the outskirts of large cities, providing a scientific basis for urban planning and management decisions.

The invention relates to the technical field of urban data operation, in particular to a Shanghai address database dynamic updating operation method, which comprises the following steps of: uniformly processing data formats by completing docking with data source interfaces of Shanghai public security, postal service and maps; existing address data in Shanghai are disassembled into hierarchical fields of cities, districts, streets, roads and roadways according to a 18-level structured model, hierarchical differences between a new data source and a golden address library are continuously compared, address change authenticity is inferred through a knowledge graph and a graph neural network, target addresses which are not inquired in continuous 3 months are judged as suspected discarding, and discarding of the target addresses is judged. And predicting a discarding probability and a change state in combination with a time sequence model, and archiving historical data to obtain a complete address library containing a life cycle. According to the method, the problems that the efficiency is low and intelligent, efficient and traceable address library dynamic updating operation cannot be realized when a traditional regular full-quantity synchronization mode is used for dealing with high-frequency address change of an ultra-large city in Shanghai are solved.

The application discloses a kind of city shadow area automatic identification method based on knowledge graph, including shadow area case base construction, shadow area feature recognition model construction, target city graph construction, target city shadow area graph subset search, target city shadow area identification result output and show five parts.This method integrates present city data through knowledge graph, accurately identifies city shadow area and carries out fine display to identification result.The application can cope with city shadow area automatic identification in the field of city planning, the identification accuracy is higher based on super large city case base, the identification speed is faster based on shadow area graph subset search, the three-dimensional interactive display formed is more three-dimensional and intuitive, and the guidance to city planning project is stronger.