Research On Data Deploying And Exchanging Method For Integrating Geographic Models In Distributed Web Environment

Geographic modeling and simulation research is important for analysis earth environment and help people understand various geo-phenomenon.Along with the development of different disciplines within earth science research,a large number of geo-analysis models have been designed and developed.And the emergence of Internet technology largely promoted studies about sharing and integrating geo-analysis models as web services.In an open web environment,reusing and integrating different geo-analysis models eventually meet the demands of preparing data and exchanging data.Because of the distribution characteristics of model resources and data resources,it is very difficult to conduct the data deployment work for running a model service.Also,the exchange work within an integrated modeling process always need to be conducted in a lower technic level.Thus,the difficulty of data deployment and exchange work hinders using and integrating geo-analysis model services.Therefore,the distributed model integration scene should be focus on the data request and access problem.Through the design of the geographic model behavior description method and the middleware of unified data access,to achieve the geographical model and data resources access.Base on this idea,using the universal data description exchange model to design the scripting reconstruction method of the model data and to realize the mutual matching between the model and the data resource.On the base of message queue and network data storage technology,to achieve the model data exchange in the distributed network environment.The main research contents and results are structured as follows:(1)Structured description method for the geo-analysis model behavior.Based on the behavior characteristics of geo-analysis model,using the state machine model and designed a structured description method to described the model behavior.and heterogeneous models according to the number of requests for abstract unifie intelligent interface.According to the different types of data access,designed the data resource access method library.Based on the UDX data mapping method,unified data access middleware construction of geographic model,unified access model and implementation of geographic data resources.(2)Script reconstruction method of model data.Unified data view based on UDX and the EMScripten,to realize the reconstruction method of script model data,and unified to the package script data reconstruction of the existing methods,the formation of data reconstruction method base,data required for the operation model of the auxiliary work.(3)The method of data exchange and caching.Based on the message queue and network data storage technology,the model data in the distributed network environment,exchange and distribution control,so as to support the effective exchange of data between different models.Considering the data integrated and data exchange under the distributed network environment.The aim is the data reconstruction and exchange,this paper design a unified access methon of geographic data resources and exchange method between the model operation and data resources to establish a data access and exchange bridge.Based on this method,the geo-analysis model sharing and integration can be better under the distributed network environment.