374 ◾ New JIT, New Management Technology Principle
instructions based on market research and planning (refer to Section 9.2). ey
then use these instructions to make specic product design specications (draw-
ings) and to promptly convert them to digital format so that they can be suit-
ably processed and applied. e data are primarily used in numerical simulations
known as CAE (Amasaka, 2007a; Amasaka et al., 2012).
CAE analysis enables engineers to determine whether the product design
specications result in sucient product quality and if not, the specications are
promptly optimized. Manufacturers then carry out eective preproduction, testing,
and evaluating prototypes (prototype testing). A nal evaluation of the develop-
ment design is ...