| Codes | Subcodes |
| Environmental factors | Markets, infrastructure, technology trajectories, convergence, and innovation timing | Network and community factors | Open innovation models and open source movement | Product design factors | Customer/user input, market orientation, new technology incorporation, and novel and useful product features | Process factors | Development style, agility, requirements analysis, process frameworks/methods, prototyping, and user-driven innovation | Psychological factors | Creative state, innovation styles, developing creative thinking, and fostering creative talent in engineers | Team performance factors | Dysfunction avoidance, role allocation, communicative interactions, accommodation of divergent thinking, team learning, absorptive capacity, and expertise integration | Managerial factors | Work environment, creativity barriers, and innovation leadership | Tools and techniques factors | Creativity techniques and support tools | Evaluation factors | Evaluation |
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