• Journal of the Ergonomics Society of Korea
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• v.23 no.3
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• pp.53-72
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• 2004

Today we are observing a lot of injuries, casualties, and property losses that are mainly caused by the defects of products. In order to derive safety designs, which minimize the possibility of such product liability-related accidents, we need to take into account the user-product interaction as an important part of the danger factor analysis. Existing risk analysis techniques, however, have some limitations in detecting comprehensive danger factors that are peculiarly involved in human errors and the functional defects of products. Researches on danger factor analysis regarding the user-product interaction have been carried out actively in ergonomics. In this paper, we suggest a novel product risk analysis technique, which is more objective and systematic compared to the previous ones, by combining a modified TAFEI (Task Analysis For Error Identification) technique with SASA (Systematic Approach to Accident Scenario Analysis) technique. By applying this technique to the product design practice in industry, corporations will be able to improve the product safety, consequently strengthening the competitiveness.

• Journal of Korea Multimedia Society
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• v.15 no.4
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• pp.501-507
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• 2012

Human body motion is a non-verbal part for interaction or movement that can be used to involves real world and virtual world. In this paper, we explain a study on natural user interface (NUI) in human hand motion recognition using RGB color information and depth information by Kinect camera from Microsoft Corporation. To achieve the goal, hand tracking and gesture recognition have no major dependencies of the work environment, lighting or users' skin color, libraries of particular use for natural interaction and Kinect device, which serves to provide RGB images of the environment and the depth map of the scene were used. An improved Camshift tracking algorithm is used to tracking hand motion, the experimental results show out it has better performance than Camshift algorithm, and it has higher stability and accuracy as well.

• 제어로봇시스템학회:학술대회논문집
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• 2001.10a
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• pp.120.1-120
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• 2001

This paper proposes a prototype of a safe and reliable wheelchair robot with Human Robot Interaction (HRI). Since the wheelchair users are usually the handicapped, the wheelchair robot must guarantee the safety and reliability for the motion while considering users intention, A single color CCD camera is mounted for input user´s command based on human-friendly gestures, and a ultra sonic sensor array is used for sensing external motion environment. We use face and hand directional gestures as the user´s command. By combining the user´s command with the sensed environment configuration, the planner of the wheelchair robot selects an optimal motion. We implement a prototype wheelchair robot, MR, HURI (Mobile Robot with Human Robot Interaction) ...

• 한국HCI학회:학술대회논문집
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• 2006.02b
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• pp.549-556
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• 2006

본 연구에서는 일상 생활 속에서의 사람들의 행태(behavior)를 Digital 환경에 반영하여, 보다 사용자에게 친숙한 형태의 사용자 경험을 제공하고자 한다. 그리고 사용자에게 감성적인 요소를 제공함으로써 컴퓨터 기기와의 Interaction 과정에서의 사용자 만족도를 높이고자 하였다. 우리는 이 연구를 통해서 User Preference 를 고려하여 사용자 의지에 따라 UI 의 변경이 가능하도록 하는 User Interface 의 설계를 제안한다. 또한 살아있는 객체와 interaction 하는 것 같은 느낌을 제공하여 사용자의 감성적 만족도를 높이고자 했으며 이 과정에서 Fluid interaction 의 개념이 적용되었다. Digital 환경의 한정된 공간을 효율적으로 사용할 수 있도록 하기 위해서 Zoomable UI 의 개념을 적용하여 사용자에게 효과적인 정보 전달을 하고자 하였다. 이러한 연구의 결과로서 Zoom in/out 이 가능한 새로운 개념의 Memo Application 을 설계, 구현하였다.

• Journal of Korea Game Society
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• v.7 no.3
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• pp.49-58
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• 2007

The progress of the MMORPG is being under discussion based on 'User Created Content' recently. User Created Content is to be classified into four types - IC User Created Content, IC User Crafted Content, OOC User Created Content, OOC User Crafted Content. Mechanism, Dynamics and Aesthetics on the process of Game Design and Game Play that Marc Leblanc suggested are brought out differently from each other. So, User Created Content can make you understand the various desire of users who's playing game. And It is meaningful in Game Design, either. Therefore, User Created Content is significant as the interaction of IC culture and OOC culture and as the interaction of a process of game play and game design.

• Journal of the Ergonomics Society of Korea
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• v.33 no.6
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• pp.453-463
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• 2014

Objective:The purpose of this study is to identify motion patterns for cellular phone and propose a method to identify motion patterns using a motion capture system. Background: In a smart device, the introduction of tangible interaction that can provide new experience to user plays an important role for improving user's emotional satisfaction. Firstly, user's motion patterns have to be identified to provide an interaction type using user's gesture or motion. Method: In this study, a method to identify motion patterns using a motion capture system and user's motion patterns for using cellular phone was studied. Twenty-two subjects participated in this study. User's motion patterns were identified through motion analysis. Results: Typical motion patterns for shaking, shaking left and right, shaking up and down, and turning for using cellular phone were identified. Velocity and acceleration for each typical motion pattern were identified, too. Conclusion: A motion capture system could be effectively used to identify user's motion patterns for using cellular phone. Application: Typical motion patterns can be used to develop a tangible user interface for handheld device such as smart phone and a method to identify motion patterns using motion analysis can be applied in motion patterns identification of smart device.

• Journal of Information Processing Systems
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• v.19 no.2
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• pp.219-231
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• 2023

Intelligent applications are crucial for increasing the popularity of shared urban electric bicycles (EBs). Building an application platform architectural system that can satisfy independent user operations is critical for increasing the intelligent usage of shared EBs. Consequently, we collected online reviews of shared EB applications, conducted semantic processing and sentiment analysis, and refined the positive and negative review data for each function. The positive and negative review indices of each function were calculated using the formulae for positive and negative review indices of product functions, thereby determining the functions that need to be improved. Each function of the Shared EB application was improved according to its business process. The main contributions of this study are to build a user requirement architecture system for the Shared EB application with five dimensions and 22 functions using the Delphi method to design the user interface (UI) of this application based on user satisfaction evaluation results; to create a high-fidelity dynamic interaction prototype and compare user satisfaction before and after improving the Shared EB application functions. The testing results indicate that the changes in the UI significantly improve the user experience satisfaction of the urban Shared EB application, with the positive experience index increasing by 69.21% and the negative experience index decreasing by 75.85% overall. This information can be directly used by relevant companies to improve the functions of the Shared EB application.

• Journal of Information Technology Services
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• v.12 no.4
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• pp.381-397
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• 2013

User enjoyment is a key factor to understand online and mobile game users' behaviors. This study aims to understand the differences between mobile and online games, and the differences between Korean and Chinese game users in terms of the perceived importance of user enjoyment elements. To use AHP (Analytic Hierarchical Process), we decompose user enjoyment into sub-elements; sensory enjoyment, content enjoyment, enjoyment of the achievement, and enjoyment of interaction. Though the empirical study and independent t-test, we can find that there are the differences in the perceived importance of user enjoyment elements between Korean and Chinese game players, and between mobile and online games. Chinese users more stress on enjoyment of interaction and Korean users more emphasize on enjoyment of the achievement.

• Journal of Korea Multimedia Society
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• v.19 no.5
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• pp.932-938
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• 2016

Recently, interactive media which maximizes audience engagement by making the audience appeal on a stage in digital media environment has been distributed more widely. In fact, there has been active movement to develop and promote a new participatory media genre with higher immersion by applying this kind of interactive media concept to advertisement, film, game and e-learning. In the conventional interactive media, digital media had to be enjoyed in particular environment where diverse sensors were installed or through a certain device to recognize a user's motion and voice. This study attempted to design and implement an image creation system which ensures interactions between a user and media in popular distribution-enabled web environment and through PC and smart devices to minimize the image producer-user constraints.

• Journal of the Korean Society for information Management
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• v.15 no.1
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• pp.109-128
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• 1998

In the digital library environment, user-librarian interaction is an essential echanism for dealing with user's information needs. This study, first, explores the importance of user-librarian interactions, and then a few types of interaction mechanisms are reviewed. A survey of the current trends in Korea is followed. finally, several ideas for activating user-librarian interactions are suggested with the purpose of giving effective information servicees.