Design and development of a product requires considering different aspects of the product through coordination, negotiation, and discussion in a collaborative environment. Each participant plays a role as a stakeholder, generating information from his/her viewpoints or perspectives, which influence the design through his/her design decisions. Collaboration is essential in a design process to avoid decision making mistakes, to shorten design time, and to improve design quality. Specific focuses on design collaboration in this paper are: (i) Modeling collaborative design process; and (ii) Implementing design system to support real-time and synchronized group design activities.

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