Abstract: In current modeling systems, all dimensions in a model have to be fully specified by the user. It is desirable that systems become more flexible in this respect, i.e. that non-critical ...

Abstract: Feature modeling is nowadays the predominant way of product modeling. Functional and geometric information are stored in a single product model, consisting of features such as holes, slots, and ...

Abstract: Collaborative systems are distributed multiple-user systems that are both concurrent and synchronized. An interesting research challenge is to develop a collaborative modeling system that offers ...

Abstract: An ideal product modeling system should support both part modeling and assembly modeling, instead of just either of them as is the case in most current CAD systems. A good basis for such ...