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Focus on the "glue" for building PSE's as well as the "bricks" -- a paradigm shift
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This glue implies interfaces and data exchange formats for numerical and symbolic modules needed as PSE components
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Glue includes/implies the software (engineering) approach for developing PSE's
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The defined architecture must support identified features of PSE's and their development
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What are the critical features of scientific PSE's that distinguish them from Quicken (a well-known financial PSE) and say a command and control system which could include say a weather simulation as a sub-PSE
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Glueing diverse pieces requires second recommendation of crossdisciplinary interactions
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