Browsing by Subject "human-computer interaction"

This Master’s Thesis describes an original user study that took place at the University of Helsinki. The study compares and evaluates the usability of three different methods that are used in meeting rooms to share a private device’s screen on a big public screen in order to give a slideshow presentation: HDMI, VIA, and Ubicast. There were 18 participants. The study was conducted in a controlled environment, replicating a typical meeting room setup. The experiment consisted of screen mirroring tasks and an interview. In a screen mirroring task, the participants were asked to share their screen using each of the three technologies. They were provided with the necessary equipment and user guides if needed. Then the participants were given training on how to use the technologies, and they performed the tasks again. During the task, the time taken to complete each screen mirroring session was recorded, and any errors or difficulties encountered were noted. After completing the screen mirroring tasks, participants were interviewed to gather qualitative data on their experiences and preferences. They were asked about the ease of use, efficiency, and any difficulties they faced while using each technology. This information was used to gain insights into user preferences and potential areas for improvement in the respective technologies. To analyze the data, the System Usability Scale (SUS) scores and time taken to complete the screen mirroring tasks were calculated for each technology. Statistical analyses were conducted to determine any significant differences in SUS scores and time across the three technologies. Additionally, the interview data was analyzed using thematic analysis to identify common themes and patterns in the experiences of the users. HDMI emerged on the top, with Ubicast not far behind.