Laserfiche WebLink
<br />/ <br /> <br />e <br /> <br />e <br /> <br />e <br /> <br />'> <br /> <br />Ou305~ <br /> <br />Table 3: Functions - Alternative Architectures <br /> <br />Architecture Description <br />Case SpecificJ A Case Specific architecture is one in which a single application <br />Dedicated program (e,g, usually a model with some comprehensive, built-in <br />Systems. utilities) is the basis of the DSS. The application program is targeted at <br /> a very specific water resource system. The various aspects of the water <br /> resource system (e,g, state information, physic.aJ parameters, and <br /> process information) are completely integrated into the application <br /> program, Data (files or database system structure) for dedicated <br />,. ' systems are typically highly customized for the specific application, <br />An example of a dedicated an:hitecture/system is CRSS., <br />GenericIModel Generic{Model centered approaches are characterized by a high <br />Centered Systems degree of abstraction from the specific application, They provide a <br /> system kernel consisting of one or more generic models, Good <br /> examples of such an approach are the generations of HEC-model <br /> systems developed by the Hydrologic Engineering Center, These <br /> implementations are not tied to a specific case and are flexible in their <br /> application, <br />Dedicated Dedicated Decision Suppon systems provide an an:hiteclure which is <br />Decision Support a hybrid of the Case Specific and Generic approaches, It involves the <br />Systems use of one or more generic models which are, on a source-code level, <br /> customized to a specific case, The data for the case are represented in <br /> customized databases, <br />GIS Based GIS Based Systems are an outcome of recent developments in the field <br />Systems of Geographical Infonnalion Systems, GIS's are systems which are <br /> specialized at storing, retrieving, modifying, and generating all sorts <br /> of spatially referenced data, Some of the commercially available GIS <br /> packages provide extended functionality and have been applied <br /> successfully for various operational and long teno planning studies. <br /> Recent developments in "modeling in GIS" suggest that GIS's can be <br /> extended even further into other domains of modeling (e,g, water <br /> resources) , <br />Data Centered Data Centered Systems arrange the full funclionality of the system <br />Systems around a central database. The database is carefully struclured so that <br /> it can suppon numerous applications. Data flow from the database to <br /> the application programs, Data produced by the application programs <br /> flow back into the database where they can be picked up by other <br /> application programs. Data in data centered approaches for water <br /> resource applications include state information (e.g. historical and <br /> near real-time conditions), physic.aJ parameter infonnation, spatial <br /> information (e,g, network topologies, ele.), model scenarios (e,g, <br /> inputs and output from simulation models), etc, <br /> <br />A purely case specific/dedicated system such at the Colorado River Simulation <br />System (CRSS). developed. by the USBR.implies that the various aspects of <br />both the system and the application domain are all intermixed into a single. <br />very specific implementation, This approach has the advantage that the result <br /> <br />Case Specific Systems: <br />Evaluation, <br /> <br />DAMES& MOORE/CADSWES-30 <br />