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Investigating and improving user experience of Ulsan BIS (Bus Information System)
Minseop Kim,Jiyoung Lee,Sungwon Jang,Chajoong Kim 한국HCI학회 2017 한국HCI학회 학술대회 Vol.2017 No.2
This study aims to identify the problems of current Ulsan BIS (bus information system) and improve the usability and user experience of the system. The key questions are what problems users experienced with Ulsan BIS, what alternatives users have used instead of Ulsan BIS and what wishes user have for future BIS. In order to answer the questions, three methods were adopted and user studies were conducted: contextual inquiry, focus group, and collage making. According to the results, users want BIS like an air for the universal problem and high accuracy. They also need just one solution rather than a combination with other map mobile apps such as Naver or Daum. Lastly, 4 wishes for BIS were derived: customizing, intuitiveness, harmony, and romance that decreases anxiety. They also had a wish of the interaction between passengers and drivers and of consistent bus information after they get on the bus.
Identifying target experiences based on user’s needs and wishes in the future domestic electric oven
Junghun Hyun,Sandeul Lee,Nari Kim,Jeongmin Kim,Chajoong Kim 한국HCI학회 2019 한국HCI학회 학술대회 Vol.2019 No.2
This research aims to understand the user and identify user experiences for the future oven. LG lightwave oven was chosen as the stimuli product in the study. To achieve the research goal, a user study was conducted to find out user’s needs and wishes. A set of research techniques were used such as survey, collage, guided tour, observation and retrospective interview. A total number of 53 subjects participated in the study. To verify that the ideas are meaningful, survey was conducted by 48 subjects and guided tour, observation, interview and collage was conducted by 5 subjects. Target user experiences in the future oven were derived from the results. Confusing and disconcerting trays, water container and buttons have usability problem and oven users expect and desire elaborate and sophisticated oven which is at the same time very easy to use.
Exploring the Roles of Lighting in Human-Product Interaction
( Da Eun Jun ),( Chajoong Kim ),( Youngshin Kwak ) 한국감성과학회 2014 춘계학술대회 Vol.2014 No.-
Lighting enables humankind to visually perceive everything in the dark since they invented artificial lighting sources such as candle and light bulb. Nowadays lighting is used not only to brighten the space but also to play a more diverse roles in humanproduct interaction. For instance, the LED indicator on a battery charger lets the user recognize whether the batteries are fully charged or not. Although lighting is getting deeply pervasive to our daily lives, few studies on the interaction between human and lighting have been done. Therefore, this study aims to identify the role of lighting in human-product interaction. To figure out what kinds of role lighting plays in human-product interaction, literature study was conducted. Four roles of lighting were identified: Visibility, Information Transfer, Visual Aesthetic Enhancement and Emotion Induction. Based on the four roles, a conceptual framework was made in order to provide a better understanding of the relationship between human and lighting. Further implications to the design practice are discussed as well.
The Application of Lighting Factors in Information Transfer
Da-Eun Jun,Chajoong Kim 대한인간공학회 2014 대한인간공학회 학술대회논문집 Vol.2014 No.11
Objective: The aim of this study is to explore the interaction between human visual perception and lighting factors in information transfer. Background: Visualization through lighting helps effectively deliver information to people. Although lighting can be controlled with various factors, only a few factors have been used to transfer information. Therefore, we wondered how various factors of lighting are related to the visual perception of information. Six factors of lighting were identified based on the literature study: Intensity, Color, Area, Movement, Texture and Distribution. Method: In order to reveal the interaction between the lighting factors and the perception of information, an experiment was designed and 10 participants were recruited. Based on representative three scenarios of an external hard disk storage space usage (in case of being full, half full and empty), the participants were asked to set the most appropriate lighting of each scenario by controlling each factor of lighting according to given scenarios. Results: The results indicated that there was no significant difference in the pattern of setting lighting factors between the participants for each scenario. However, the pattern of setting lighting factors was distinct among scenarios. Conclusion: The conclusion was drawn that lighting factors influence the human perception in information transfer depending on use cases. Application: In information transfer, lighting can be more effectively utilized by understanding the interaction between lighting factors and the visual perception of human.