Bertrand Maury

2013

The modeling of a complex system can be decomposed into three phases. Phase I consists in identifying its functions (most organs in the human body have more than one), to introduce quantities that are relevant with respect to those functions, and to design relations (equations) between those quantities in order to obtain a mathematical problem. Among those quantities some are called unknowns, or variables, and some are data (their values are supposed to be known).