چكيده به لاتين
Flexibility in sketching has made it a useful tool for communication between designers, design reasoning, and recording information. The purpose of the research is to find a quantitative relationship between the number of sketches in developing ideas and tools used in sketching. The research is a descriptive-analytic study. The study population included a number of industrial design students who had completed the basic design course. In the first phase of user-centered design for planning, 22 stakeholders (6 females and 16 males) were examined by an open questionnaire. In the second phase, 29 individuals selected from the target groups were monitored at a brainstorming session (10 females and 19 males). A review of the terms of use was conducted by an open questionnaire in an interview with 30 stakeholders (13 females and 17 males). In field research, the postures of 37 students (12 females and 25 males) were evaluated by Ergo-Flo software. The users' activities were analyzed by a questionnaire based on the System Usability Scale with Cronbach’s alpha of 0.91, which included 29 students (9 females and 20 males). The third phase was the analysis and interview with the users for needs assessment. In a test, 30 stakeholders (7 females and 23 males) participated, divided into three groups of 10, and the output of the groups was compared; Group (a) have pen and marker, Group (b) with pen, and Group (c) had the desired number of tools. In the fourth phase, the best idea was chosen by using the Scamper method through scoring matrix and was evaluated by the experts and the target group after the modeling in the fifth phase. To compare the current and previous conditions, the target group was examined using the system usability scale questionnaire after product evaluation. Accordingly, 24 participants (5 females and 19 males) were examined. The findings showed that the score of usability was 16.4 out of 100 after reviewing the user's previous condition indicating the user's lack of satisfaction from the previous sketching process. According to the criteria extracted from the previous conditions, the brainstorming started, and the usability score obtained was 83.1 after evaluating the final idea, which indicated the user satisfaction of the new product and the current process. The results showed that the number of tools and methods had affected the number of sketches obtained, and the speed of sketching can be increased by integrating different tools for a product.
