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A. Mahdavi, M. E. Ilal, P. Mathew, R. Ries, G. Suter:
"Aspects of S2";
in: "Proceedings of the CAAD Futures Conference 99", Proceedings of the CAAD Futures Conference 99. Georgia Atlanta, USA, 1999, 185 - 196.

We present in this paper the essential aspects of the S2 system. This is the internet realization of SEMPER, an active, multi-domain, space-based, object oriented design environment for integrated building performance modeling. The key features of the S2 environment are as follows: A user can access the system regardless of the computer hardware, operating system or the location on a network; geographically distributed users can asynchronously generate a building model through the user interface; this building model can then be simultaneously evaluated with multiple simulation applications running on remote simulation servers; persistent storage is provided for project data and evaluation results ; designers using the system have access to multiple libraries that contain building information such as material data, construction types, schedules, and weather data.