• Korean Journal of Computational Design and Engineering
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• v.21 no.2
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• pp.159-169
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• 2016

In order to realize the virtual prototyping (VP) of digital products, it is important to provide the people involved in product development with the appropriate visualization and interaction of the products, and the vivid simulation of user interface (UI) behaviors in an interactive 3D virtual environment. In this paper, we propose an approach to web-based 3D virtual experience using Unity and Leap Motion. We adopt Unity as an implementation platform which easily and rapidly implements the visualization of the products and the design and simulation of their UI behaviors, and allows remote users to get an easy access to the virtual environment. Additionally, we combine Leap Motion with Unity to embody natural and immersive interaction using the user's hand gesture. Based on the proposed approach, we have developed a testbed system for web-based 3D virtual experience and applied it for the design evaluation of various digital products. Button selection test was done to investigate the quality of the interaction using Leap Motion, and a preliminary user study was also performed to show the usefulness of the proposed approach.

• Journal of Korea Society of Digital Industry and Information Management
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• v.9 no.2
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• pp.33-40
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• 2013

E-books have been popular and common in everyday life during past a decade, and the market is expected to grow much more because of the popularity of tablet computing devices such as iPad. With the helps from the devices, people want to read or experience more interactive, fun, and informative e-book contents. In order to meet those needs, we introduce requirements of an e-book viewer system that supports user interaction, 3D modeling view, and augmented reality. We also introduce some design issues of the system and its concept proof prototype system. We determine to adopt HTML5 for e-book content format because it already supports content rendering, multimedia, and user interaction. Furthermore, it is easy to implement e-book viewer because there is already Webkit component for HTML5. We also discuss design issues for integrating an Augmented Reality viewer with Webkit-based e-book viewer. This paper will give e-book viewer developers and contents developers some guidelines for new e-book systems.

• Journal of Korea Game Society
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• v.20 no.2
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• pp.27-34
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• 2020

Game characters provide a path to connect and interact between game designers and players through the personality. We need to study the personality design of game characters considering the interaction. The character's personality is formed through 'design elements' and 'personality factors' according to the intention of the game designers. It is formed to the ultimate character's personality by interacting with the player's personality factor. 14 design elements and 40 personality factors were extracted. This study suggests a 'game character personality model' considering the interaction.

• Structural Engineering and Mechanics
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• v.90 no.2
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• pp.117-125
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• 2024

This article presents the behaviour and design of cold-formed steel (CFS) web-stiffened lipped channel beams that primarily fail owing to the buckling interaction of distortional and global buckling modes. The incorporation of an intermediate stiffener in the web of the lipped channel improved the buckling performance leads to distortional buckling at intermediate length beams. The prediction of the strength of members that fail in individual buckling modes can be easily determined using the current DSM equations. However, it is difficult to estimate the strength of members undergoing buckling interactions. Special attention is required to predict the strength of the members undergoing strong buckling interactions. In the present study, the geometric dimensions of the web stiffened lipped channel beam sections were chosen such that they have almost equal distortional and global buckling stresses to have strong interactions. A validated numerical model was used to perform a parametric study and obtain design strength data for CFS web-stiffened lipped channel beams. Based on the obtained numerical data, an assessment of the current DSM equations and the equations proposed in the literature (for lipped channel CFS sections) is performed. Suitable modifications were also proposed in this work, which resulted in a higher level of design accuracy to predict the flexural strength of CFS web stiffened lipped channel beams undergoing distortional and global mode interaction. Furthermore, reliability analysis was performed to confirm the reliability of the proposed modification.

• Educational Technology International
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• v.9 no.2
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• pp.79-95
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• 2008

This paper aims to investigate modeling scripts based on the mode of group interaction in a computer-supported collaborative learning environment. Based on a literature review, this paper assumes that group interaction and its mode would have strong influence on the online collaborative learning process, and furthermore lead learners to create and share significant knowledge within a group. This paper deals with two different modes of group interaction- distributed and shared interaction. Distributed interaction depends on the external representation of individual knowledge, while shared interaction is concerned with sharing knowledge in group action. In order to facilitate these group interactions, this paper emphasizes the utilization of appropriate CSCL scripts, and then proposes the conceptual framework of CSCL scripts which integrate the existing scripts such as implicit, explicit, internal and external scripts. By means of the model regarding CSCL scripts based on the mode of group interaction, the implications for research on the design of CSCL scripts are explored.

• Proceedings of the Korea Society of Design Studies Conference
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• 2002.05b
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• pp.270-271
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• 2002

• Proceedings of the Korea Society of Design Studies Conference
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• 2001.10a
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• pp.23.1-23
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• 2001

• The Journal of the Convergence on Culture Technology
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• v.10 no.4
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• pp.645-661
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• 2024

Today, the development of new technologies due to the 4th industrial revolution requires work performance methods such as non-face-to-face collaboration. In response to this, various VR collaboration tools are emerging, but VR collaboration tools for brainstorming, which are used in collaboration or design development work, are not provided. Therefore, despite the advantages and possibilities of VR for non-face-to-face collaboration, there are limitations in practical use. Accordingly, the development of VR collaboration tools in a digitalized work environment is necessary, and research on UI design development for this is required. The purpose of this study is to propose a VR collaboration tool prototype by developing an interaction UI design that applies user hand behavior elements that appear during collaboration sessions through user research. This study was a qualitative study. The research method was to conduct user research through observation and in-depth interviews, and as a result of analyzing the data obtained from this, five types of user hand behavior elements were derived. In this study, an interaction UI design was developed that reflects hand gestures as behavioral elements. And using Unity and the Oculus Integration SDK Kit, we created a prototype VR collaboration tool that can be used without a controller. As a result of conducting a user evaluation of the prototype produced in this study, it was found that users had difficulty making hand gestures accurately, and it was possible to find areas for improvement in UI design. It is expected that this study will help develop interaction UI design for VR collaboration tools that can increase work efficiency.

• Journal of The Korean Association For Science Education
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• v.32 no.4
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• pp.671-685
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• 2012

In this study, we developed an analogical experimental design strategy emphasizing understanding and checking stages and applied it to four groups consisting of 7th grade science-gifted students. We classified the patterns of experimental design processes and analyzed the verbal interactions among the science-gifted students at the levels of turn and interaction unit. The analyses of the results reveled that three groups were relevant to reinitiated motion and the other to backward-divergent motion. In the analyses of turn and interaction unit, the frequencies of the statements related to the task were high, especially 'making suggestion' and 'elaborated symmetrical interaction'. The analyses for each stage of strategy indicated that the frequencies of 'explain', 'question', and 'cumulative interaction' at understanding stage were high. At designing stage, the frequencies of 'making suggestion', 'cumulative interaction', and 'disputative interaction' were found to be high. At checking stage, 'making suggestion', 'receiving opinion', and 'disputative interaction' were high. In the comparison of the patterns, the qualitative differences among interaction unit were found at all the stages, whereas there were differences only between designing and checking stages in the turn cases. Educational implications of these findings are discussed.

• 한국HCI학회:학술대회논문집
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• 2006.02b
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• pp.340-344
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• 2006

홈 환경은 독립 환경에서 네트워크 환경으로 발전되고 있으며, 더 나아가 센서를 기초로 하는 컨텍스트 어웨어(context-aware) 환경으로 변화될 것이다. 이러한 홈 환경의 변화는 사용자에게 더 많은 요구와 니즈를 발생시키고, 이것을 만족시키기 위해서는 사용자의 관점에서 요구와 니즈를 파악하는 것이 필요하다. 본 연구에서는 '사용자의 행위는 사용자의 요구와 니즈를 표출한다' 와 '사용자의 행위는 홈 환경 컨텍스트를 판단한 사용자 컨텍스트에 의해 발생된다' 라는 두 가지 주장을 전제로 하여, 사용자 행위와 사용자 컨텍스트를 통해 사용자의 니즈를 파악할 수 있는 프레임워크를 제안하는 데 그 목적이 있다. 이러한 프레임워크는 사용자 정보를 체계적으로 분석할 수 있게 하여 디자인 과정에서 사용자의 니즈를 추출하는 효과적인 장치가 될 것이다. 이에 먼저, 사용자 행위의 특성을 파악하기 위해 '행위카드 기록법' 을 이용한 사용자 조사를 실시하여 분석을 위한 데이터를 수집하였고, 그 다음으로, 수집 된 데이터를 도널드 노만(D.A.Norman)의 행동 7 단계 모델과 5W1H를 근거로 분석하여 사용자의 행위는 바라보는 관점에 따라 다른 해석을 가진다는 것을 밝혀내었다. 마지막으로, 그 관점을 '행위간의 연관성', '사용자 컨텍스트 요소간의 연관성', '사용자 행위와 사용자 컨텍스트 요소 간의 연관성'의 세가지 프레임워크로 구성하여 디자인 또는 기획의 과정에서 사용자의 정보를 활용할 수 있는 활용방안과 함께 제안한다.