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<br />..... ~ " ') <br />.Ul..u0H <br /> <br />4 <br /> <br />NON-RESIDENT MODELS <br /> <br />Introduction <br /> <br />In the planning stages of the INTEGRAL Project, utility staff and reservoir operators <br />expressed the need to use existing utility-specific models in conjunction with the Decision <br />Support System. Examples of such models include hydrologic and streamflow forecasting <br />models, reservoir and power system operational and/or planning models, and detailed water <br />quality models. These models are often complex, dependent on large historical databases, <br />and must be used by highly trained personnel. <br /> <br />To preserve the generic nature of the DSS, while facilitating access to the results of such <br />models, these models are not directly integrated into the DSS but are considered 'off-line' or <br />'non-resident' models. As discussed below, the DSS framework will allow for the <br />development of appropriate connections (referred to as Data Management Interfaces (DMIs)) <br />to enable sharing of input and output data between the non-resident models and the DSS. It <br />will also be possible to develop DMIs to allow for data exchange with non-resident historical <br />databases. Once non-resident data (model results or historical data) have been loaded into <br />the DSS, it will be possible to take advantage of the visualization and analysis tools available <br />within the DSS. In this manner, results of the non-resident models can be incorporated into <br />the decision making process. <br /> <br />Link to the Decision Support System <br /> <br />It is expected that the non-resident models and associated data files and data management <br />software will reside on a few selected workstations where specialized personnel have access <br />to them. It is also assumed that the workstations will be on the wide-area network that <br />supports the real-time DSS environment. The non-resident models, therefore, will be <br />accessible from these selected workstations either directly or through a window from the <br />DSS. <br /> <br />The links between the non-resident and DSS environments will be established through <br />customized DMIs. Each specific model or data file system will require its own OM!. The <br />DMIs will be responsible for writing a defined set of data -- either non-resident model results <br />or a specified set of non-resident data such as historic flow data -- to a file in the DSS. <br /> <br />4-1 <br />