• ETRI Journal
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• 제38권6호
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• pp.1229-1239
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• 2016

For efficient interaction between humans and robots, robots should be able to understand the meaning and intention of human behaviors as well as recognize them. This paper proposes an interactive human intention reading method in which a robot develops its own knowledge about the human intention for an object. A robot needs to understand different human behavior structures for different objects. To this end, this paper proposes a hierarchical behavior knowledge network that consists of behavior nodes and directional edges between them. In addition, a human intention reading algorithm that incorporates reinforcement learning is proposed to interactively learn the hierarchical behavior knowledge networks based on context information and human feedback through human behaviors. The effectiveness of the proposed method is demonstrated through play-based experiments between a human and a virtual teddy bear robot with two virtual objects. Experiments with multiple participants are also conducted.

• International Journal of Contents
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• 제12권2호
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• pp.1-5
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• 2016

Extensible 3D (X3D) is the ISO standard for defining 3D interactive web- and broadcast-based 3D content integrated with multimedia. With the advent of this integration of interactive 3D graphics into the web, users can easily produce 3D scenes within web contents. Even though there are diverse texture nodes in X3D, projective textures are not provided. We enable X3D to provide SingularProjectiveTexture and MultiProjectiveTexture nodes by materializing independent nodes of projector nodes for a singular projector and multi-projector. Our approach takes the creation of an independent projective texture node instead of Kamburelis's method, which requires inconvenient and duplicated specifications of two nodes, ImageTexture and Texture Coordinate.

• International Journal of Advanced Culture Technology
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• 제7권1호
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• pp.162-173
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• 2019

This study proposed 'Body Food,' an interactive tactile mat that provides interactive visual responses and induces physical activity in young children at the time of developing tactile and five senses, along with the touch of various stimuli. The product combines fiber materials and digital content to achieve a variety of visual and auditory responses in real time when children touch the fabric. User tests were conducted for 4-year-olds and the result was positive in terms of physical exercise and artistic experience, but quantitative testing is required to generalize it. In the future, we will complement physical and digital contents to realize more complete product.

• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2022년도 제66차 하계학술대회논문집 30권2호
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• pp.729-730
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• 2022

급격히 성장해가는 메타버스 시장 속에 메타버스 플랫폼의 증가세와 그에 반해 아직 활성화되지 못한 메타버스의 콘텐츠 크리에이터 생태계로 인하여 다수의 메타버스 플랫폼들의 내부 콘텐츠 확충과 유저 크리에이티브 생태계 활성화의 중요성이 대두되고 있다. 본 논문에서는 보다 체계적이고 효율적으로 메타버스 환경에 맞춘 인터랙티브 콘텐츠 개발 프로세스를 제안한다.

• 한국산업정보학회논문지
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• 제22권3호
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• pp.1-11
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• 2017

카메라 영상을 분석하여 인체의 움직임을 인지하는 모션 인식에 관한 관심이 커짐에 따라, 원거리에서의 손동작만으로 디지털 디바이스를 제어하는 연구가 활발히 이루어지고 있다. 이러한 손을 이용한 인터페이스는 다양한 장소에서 일반인에게 노출되어 광고 효과를 기대하는 디지털 사이니지 산업 영역에서 효과적으로 이용될 수 있다. 즉, 디지털 사이니지 콘텐츠를 비접촉식 손동작을 통해서 간단히 제어할 수 있는 인터페이스를 제공함으로써, 다수를 대상으로 관심 있는 광고 정보를 제공할 수 있으며, 이는 매출로 이어질 수 있는 계기를 마련하게 된다. 따라서 본 논문에서 제안하는 일정 거리에서의 손의 움직임을 통한 디지털 사이니지 콘텐츠 제어 시스템은 인터렉티브 광고 매체 개발에 효과적으로 활용될 수 있을 것이다.

• 한국컴퓨터산업학회논문지
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• 제4권10호
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• pp.713-722
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• 2003

본 연구에서는 학습자간 상호작용 도구를 재사용하기 위해서 학습 객체 콘텐츠 표준화 기술을 적용하여 상호작용적 학습 객체인 ILO를 정의하고, 이것이 LMS와 원활하게 통신할 수 있도록 I-HTTP를 개발하였다. 1-HTTP는 비지속적 연결성을 갖는 기존의 HTTP를 개선하여 일정 세션 유지 시간 동안 접속 상태를 지속하도록 하였다. 이러한 지속적인 연결로 인해 ILO 내에서 빈번하게 발생하는 학습자간 상호작용을 실시간으로 제공할 수 있었다. 또한 I-HTTP는 기존의 HTTP를 확장하였기 때문에 ILO는 물론 일반 HTML 문서도 처리할 수 있게 하였다 특히 LMS와 ILO간의 표준화된 런치 과정을 프로토콜 내의 INIT, GETVAL, SETVAL, COMMIT, FINISH 메소드를 추가하여 구현하였으며, ILO의 학습자간 상호작용 결과는 별도로 정의된 데이터 모델을 통하여 데이터베이스 서버에 저장될 수 있도록 하였다.

• Journal of Information Processing Systems
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• 제19권3호
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• pp.334-346
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• 2023

An electronic document based on PDF has been widely used in customer communication between an enterprise and a customer to deliver personalized content. However, electronic documents based on PDF in the form of paper layouts are not suitable for mobile environments because of low readability and lack of interactive interaction. Even though HTML is an essential language in a mobile environment, electronic document based on PDF is still used as it has a content integrity verification feature with a digital signature. It means that a user is sacrificing user experience in a mobile environment for content integrity and using paper-layout electronic documents. In this research, we design the Document HTML specification by setting the Document HTML conformance, adding the extended meta tags, and signing the message digest with a digital signature based on public key infrastructure (PKI). Furthermore, we implemented the Document HTML system, which has REST API services to generate and verify the Document HTML, and did experimental verification of the theory. As a result, we have confirmed that the Document HTML has both content integrity and user experience on mobile. Furthermore, the Document HTML is expected to be an alternative document format to deliver personalized content from an enterprise to a customer in a mobile environment instead of the paper layout electronic document such as PDF.

• International journal of advanced smart convergence
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• 제12권4호
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• pp.306-313
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• 2023

Having pet is one of the activities people living in modern society do to relieve stress and find peace of mind. Currently, the object of companion animals has moved beyond being a real 'living entity' and has developed to a stage where the animal's upbringing process can be enjoyed in a virtual space by being programmed in digital content. This paper studies detailed elements such as character design, interaction, and realism of 'Tamagotchi (1996)', which can be said to be the beginning of digital training content, and 'Peridot (2023)', a recently introduced augmented reality-based training content. The point was that it was training content using portable electronic devices. However, while the environment in the electronic device in which Tamagotchi's character exists was a simple black and white screen, the environment in which Peridot's character operates has been changed to the real world projected on the screen based on augmented reality. Mutual communication with characters in Tamagotchi remained a response to pressing buttons, but in Peridot, it has advanced to the point where you can pet the characters by touching the smartphone screen. In addition, through object and step recognition, it was confirmed that the sense of reality had become more realistic, with toys thrown by users on the screen bouncing off real objects. We hope that this research material will serve as a useful reference for the development of digital training content to be developed in the near future.

• Journal of Nutrition and Health
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• 제23권6호
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• pp.443-450
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• 1990

임신과 수유 기간 동안 alcohol의 섭취가 어미와 새끼 쥐의 간내 copper 유용에 미치는 영향을 연구하기 위하여 cthanol(0 혹은 30%의 Kcal)과 copper(0.75 혹은 3.75mg/l 식이) 함량에 차이를 둔 식이조성으로 alcohol과 copper의 상호작용을 규명하는 factorial experiment를 수행하였다. 어미 쥐의 열량 섭취와 체중은 식이들에 의해 영향을 받지 않았다. 식이내 copper양이 적을 경우 alcohal을 섭취하지 않은 실험군과 비교하여 alcohol을 섭취한 실험군인 어미 쥐의 간 copper농도가 더욱 감소됨으로써 alcohol과 copper의 상호작용을 보여주었다. 새끼 쥐에게서는 식이내 copper 수준에 관계 없이 어미쥐의 alchol 섭취가 간의 총coppernein의 copper 농도에 반영되었다. Metallothionein의 zinc 함량은 metallothionetin의 copper함량과 반비례적인 관계로 보여주었다. 이상의 결과로 임신과 수유기 동안 식이내 copper함량이 적을 경우 alchol 섭취는 어미와 새끼 모두에게 copper 결핍을 초래할 수 있다는 것을 시사해준다.

• 한국컴퓨터정보학회논문지
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• 제24권7호
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• pp.53-60
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• 2019

With the gradual in-depth use of social elements, music social networking has attracted more and more attention and discussion in the industry. Therefore, starting from the user experience theory and purchase intention theory, this paper explores the mechanism of user social experience and purchase intention in mobile music applications, and adds the mediating role of brand attachment on the basis of literature research. Based on previous studies on user experience measurement of social network and evaluation report of mobile music applications in the industry, and combined with in-depth interviews of users, whether the user experience of mobile music applications, which pays more and more attention to social elements, has an impact on purchase intention or not? What specific social experience can help form purchase intention? Are mediating variables at work? In practice, a total of 398 formal questionnaires were collected to obtain first-hand data. Later, reliability analysis, factor analysis and structural equation model test were carried out successively to verify the hypothesis. According to the results of empirical research, firstly, content experience, atmosphere experience and interactive experience in users' social experience of mobile music applications have a significant impact on brand attachment, secondly, atmosphere experience has a significant impact on purchase intention, and thirdly, brand attachment has a significant impact on users' purchase intention. Fourthly, brand attachment plays an intermediary role in the relationship between users' atmosphere experience and content experience and purchase intention. Based on the above research conclusions, the author puts forward corresponding marketing strategy Suggestions, which have certain guiding significance for mobile music applications to improve users' purchase intention, and have certain reference significance for the development of mobile music applications and the expansion of business model.