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Study On Integrated Method's Application In Provincial Flood Control Consultation Decision Support System

Posted on:2007-07-30Degree:DoctorType:Dissertation
Country:ChinaCandidate:B HeFull Text:PDF
GTID:1102360182482409Subject:Hydrology and water resources
Abstract/Summary:PDF Full Text Request
Flood disasters happen frequently in China. So the task of emergency flood control is very difficult. According to actual situations of the main flood arer, the best way to control floods is to adopt the strategy of combining structural measures with non-structural measures. And the flood control consultation decision support system (FCCDSS) is a very important part of non-structural measures, which play an impoitant role in flood control and disasters reduction. On the basis of brief review of application and tendency of FCCDSS and its integration management, this paper points out the main system integrationproblems in the application of FCCDSS. And making good use of advanced computer information technology and management method including matadata, workflow, B/S architecture, Oracle, Web GIS and JAVA, it mainly researches on five aspects, such as flood control information metadata theory, flood control consultation integration methods, flood control emergency decision integration technolog, flood control task integration method and their application. And it gets the following results:(1) Basing on the general integration goal of provincal FCCDSS, the paper analizes the advanced computer information technology and management methods in the procedure of system integration, such as metadata, workflow, system network architecture, Oracle, Web GIS, JAVA. And it determines system general integration proposal through a comparative analysis, which be used to solve different problems in the system integration.(2) In allusion to the problems of resource information development in flood control system, the paper reserches on flood information matadata theory relying on the metadata fundament. Firstly, the "data" of metadata is extended to resource objects, which expands the defining category of metadata. Sencondly, the research on definition and its standard framework architecture of the resource information meatadata is emphasized on, which include data metadata, database metadata, model metadata and module metadata. Finally, on the base of research above and requirement of metadata interactive manipulation, it applies B/S architecture and metadata apllication structure to manage metadata's lifecycle in flood control decision support sytem.(3) The thought of FCCDSS integration and application is brought forth after analyzing the primary problems and the features and flow of flood control consultation in integration management and application of FCCDSS. First, the author analyzes the applicaiton feasibility of Web, module metadata, Java and Web GIS, and determine integrated design proposal of FCCDSS Integeration.Then the author analyzes the Consultation information metadata using the difinition of module metadata and characterization standard to design correspondent metadata database.And it designs and develops templates about integration management of flood control consultation System. In this system, the information oriented to the hotspots of flood control decision making is effectively managed by the flood-control consultation templates. In terms of consultation management platform, the visual thematic information can be sent to the consultation screens rapidly to support the flood control decision making. Through a case study on a flood control consultation meeting, the effect of these techniques is illustrated.(4) The abundant information about emergency flood control, such as flood emergency, terrain, social economy, materials warehouse, road network, vehicle, and so on, should be considered while a decision is made in the process of levee emergency repair. The integration research of flood emergency decision model comprises DEM, flood inundation analysis model, earth-rock volume calculation, space interpolation method, the shortest path analysis. According to the research of basic model, it studied earth-rock integration model, emergency material operation integration model, and 3D-scene visualization integration method. From deciding the main determining factors, and analyzing the concrete decision process and combining with the three above middle-granularity models integration, it researches the flood emergency repair integration model and implements in corresponding software system.(5) Currently, Flood control decision support system (FCDSS) is short of the synthetical integration oriented to flood control decision and task flow. And in this paper a model about flood control task integration management is presented to solve this problem. Firstly, through requirements analysis in for aspects, such as flood control task workflow, flood control organization model, FCCDSS modules and FCCDSS security problem, the conclusion is made that it is very important and necessary to realize the task integration management in flood control system. Secondly, according to the relationship amony security access control, workflow, information resource and information system, the flood control task integration management model is studied. And on the basis of workflow model and RBAC model, elements and their interrelation in this model are defined and described in detail, and are stored into the integration management database. lastly, adopting some advanced techniques, such as B/S network structure, Java, Oracle, JSP, and so on, flood control task integration management system is researched and developed to to support the flood control task integration and portal integration of FCDSS.Finally, the above system integration techniques and methods are applied to the three subsystems of Heilongjiang provincial flood control decision support system, such as information service subsystem, flood control consultation subsystem, and flood organization management subsystem. And the extensibility is analysed and researched in other systems. Then a summary is given and some problems to be further studied are discussed.
Keywords/Search Tags:Flood Control Consultation, Decision Support System, System Integration, Metadata, Workflow, Database, Web GIS
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