Sources of evidence used in each research phase
| Research phase | Source of evidence | Description |
|---|---|---|
| 1 | Semi-structured interviews (18 respondents) | Cost estimating (3), planning (1), engineering design (10), fabrication (4) |
| Survey (149 respondents out of 319 technical staff) | Sales (12/25), cost estimating (13/24), planning (2/6), engineering design (64/143), fabrication (44/91), assembly (14/30) | |
| Document analysis | List of employees, positions and dates of entry in the company (supported the selection of interviewees and survey respondents) | |
| Overall map of the product development process | ||
| Design process flowchart | ||
| Layout plan for design teams in the office | ||
| Company design drawings and long-term plans | ||
| 2 | Unstructured interviews | Design managers (2) and designers (16) |
| Document analysis | Design drawings and design plans | |
| Participant observation | 25 weekly short-term design planning meetings 4 integrated planning meetings 13 meetings related to process improvement at EDD workshop 1(60 participants) | |
| 3 | Unstructured interviews | Design managers (4) and designers (4) |
| Document analysis | Design drawings and design plans | |
| Participant observation | 5 weekly short-term design planning meetings Workshop 2 (40 participants) | |
| 4 | Participant observation | 4 design planning meeting, involving planning department representatives and design managers Workshops 3 (40 participants), 4 (50 participants) and 5 (60 participants) |
| Planning and control practices protocol | Application of a protocol for assessing the degree of implementation of design planning and control practices (between March and August 2013) |
| Research phase | Source of evidence | Description |
|---|---|---|
| 1 | Semi-structured interviews (18 respondents) | Cost estimating (3), planning (1), engineering design (10), fabrication (4) |
| Survey (149 respondents out of 319 technical staff) | Sales (12/25), cost estimating (13/24), planning (2/6), engineering design (64/143), fabrication (44/91), assembly (14/30) | |
| Document analysis | List of employees, positions and dates of entry in the company (supported the selection of interviewees and survey respondents) | |
| Overall map of the product development process | ||
| Design process flowchart | ||
| Layout plan for design teams in the office | ||
| Company design drawings and long-term plans | ||
| 2 | Unstructured interviews | Design managers (2) and designers (16) |
| Document analysis | Design drawings and design plans | |
| Participant observation | 25 weekly short-term design planning meetings | |
| 3 | Unstructured interviews | Design managers (4) and designers (4) |
| Document analysis | Design drawings and design plans | |
| Participant observation | 5 weekly short-term design planning meetings | |
| 4 | Participant observation | 4 design planning meeting, involving planning department representatives and design managers |
| Planning and control practices protocol | Application of a protocol for assessing the degree of implementation of design planning and control practices (between March and August 2013) |