Erignac, Charles A2023-05-222023-05-221999-06-012007-07-10https://repository.upenn.edu/handle/20.500.14332/36395We present an object-oriented semi-qualitative modeling language and a web-based simulator implementation. This language is used to develop physics based simulations in virtual environments. The associated simulator is a self-contained module. It produces, in parallel, numerical data for interactive visualization and qualitative data. The latter is available to any autonomous agents inhabiting the environment. This work is part of an ongoing project to develop self- explanatory maintenance procedure simulation in virtual environments.Presentation