• 제목/요약/키워드: Multi-interaction

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멀티모달 상호작용 중심의 로봇기반교육 콘텐츠를 활용한 r-러닝 시스템 사용의도 분석 (A Study on the Intention to Use a Robot-based Learning System with Multi-Modal Interaction)

  • 오준석;조혜경
    • 제어로봇시스템학회논문지
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    • 제20권6호
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    • pp.619-624
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    • 2014
  • This paper introduces a robot-based learning system which is designed to teach multiplication to children. In addition to a small humanoid and a smart device delivering educational content, we employ a type of mixed-initiative operation which provides enhanced multi-modal cognition to the r-learning system through human intervention. To investigate major factors that influence people's intention to use the r-learning system and to see how the multi-modality affects the connections, we performed a user study based on TAM (Technology Acceptance Model). The results support the fact that the quality of the system and the natural interaction are key factors for the r-learning system to be used, and they also reveal very interesting implications related to the human behaviors.

감성적 멀티미디어와 감성 인터페이스 (Empathic MultiMedia and Sensible Interface)

  • 이구형
    • 한국감성과학회:학술대회논문집
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    • 한국감성과학회 1998년도 춘계학술발표 논문집
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    • pp.183-188
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    • 1998
  • 미래를 예측하는 가장 정확한 방법은 미래를 창조하는 것이다. 본 논문은 멀지않은 미래를 창조하는 것이다. 본 논문은 멀지않은 미래에 우리 앞에 놓일 기술과 제품에 대한 예측과 창조를 위하여 연구된 결과이다. 인간의 생활을 풍요롭게 할 수 있는 기술롸 제품을 인간 중심으로, 인간에게 만족스럽게 개발하기 위해서 인간의 생활 특성과 함께 기계화 인간 사이의 관계를 새롭게 정리하였다. 또 인간의 COMMUNICATION생활에서 그 비중을 급속히 증가시켜 가고 있는 Haman-Machine(Computer) Interaction에 대한 정밀한 고찰을 통하여 인간 중심의 Human-Machine Interaction 을 가능하게 할 Interface로서의 MultiMedia개념을 도출하였다. 개인의 감성은 감정과 구분되는 심리 변화로, 감정에 비하여 강도는 약하나 일상 생활에서 개인의 생각과 행동에 중요한 영향을 미친다. 감성은 외부의 감각자극에 대하여 직관적이고 반사적으로 발생되며, 개인의 생활경험과 상황에 따라 다양하게 변화된다. 제품에 대한 소비자의 욕구는 단순한 보유욕구에서 비교우위욕구, 사용성 욕구를 거쳐 감성욕구로 변환된다. 미래의 인간 생활에 필요한 기술과 제품은 인간의 COMMUNICATION생활과 감성 특성을 반영하여 감성적 MultiMedia 와 감성인터페이스의 개념으로 창조되었다.

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Development of an open-source GUI computer program for modelling irradiation of multi-segmented phantoms using grid-based system for PHITS

  • Hiroshi Watabe;Kwan Ngok Yu;Nursel Safakatti;Mehrdad Shahmohammadi Beni
    • Nuclear Engineering and Technology
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    • 제55권1호
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    • pp.373-377
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    • 2023
  • The Monte Carlo (MC) method has become an indispensable part of the nuclear radiation research field. Several widely used and well-known MC packages were developed for simulation of radiation transport and interaction with matter. All these MC packages require users to prepare an input script. The input script can become lengthy for complex models. The process of preparing these input scripts is time-consuming and error-prone. In the present work, we have developed an open-source GUI computer program for modelling radiation transport and interaction in multi-segmented slab phantoms using grid-based system for the widely used PHITS MC package. The developed tools would be useful for future users of PHITS MC package and particularly inexperienced users. The present program is distributed under GPL license and all users can freely download, modify and redistribute the program without any restrictions.

다중 입출력 컨텐츠 제어를 위한 범용 멀티 터치 인터렉션 시스템 (General-Purpose Multi-Touch Inter action System for Multi-I/O Content Control)

  • 배기태;권두영
    • 한국산학기술학회논문지
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    • 제12권4호
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    • pp.1933-1939
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    • 2011
  • 초기 전자악기를 만드는 사람들은 자신들이 직접 만든 터치 장치를 사운드 조절에 이용하였다. 1982년에 첫 멀티터치 시스템이 등장하면서 21세기 초까지 관련된 많은 연구가 진행되어 멀티터치 시스템의 성능은 빠른 속도로 향상되었다. 이러한 성능 향상에도 불구하고 멀티터치 인터페이스의 대중화의 길은 요원해 보였다. 그러나 2007년 애플의 아이폰을 시작으로 멀티터치 인터페이스는 큰 인기를 끌게 되었고 스마트폰을 통해서 대중들이 멀티터치 인터 페이스의 특징을 보다 쉽게 체험 할 수 있게 되었다. 이러한 흐름 속에서 멀티터치 인터페이스는 자연스럽게 사람들의 주목을 받으며 다양한 가능성을 보이고 있지만 관련 콘텐츠의 부재와 개발 인프라의 부족으로 인해 대중화의 길로 다가서기에는 여전히 부족한 현실이다. 본 논문에서는 현재의 멀티터치 인터페이스의 문제점을 지적하고 멀티터치 인터페이스 시장의 활성화와 멀티 터치 관련 콘텐츠 제작자를 위한 범용 멀티터치 인터랙션 시스템을 제안한다. 실험을 통해 제안한 시스템의 효율성을 입증하고 나아가 멀티터치 콘텐츠 시장이 발전할 수 있는 방안을 제시한다.

Influence of grain interaction on lattice strain evolution in two-phase polycrystals

  • Han, Tong-Seok
    • Interaction and multiscale mechanics
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    • 제4권2호
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    • pp.155-164
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    • 2011
  • The lattice strain evolution within polycrystalline solids is influenced by the crystal orientation and grain interaction. For multi-phase polycrystals, due to potential large differences in properties of each phase, lattice strains are even more strongly influenced by grain interaction compared with single phase polycrystals. In this research, the effects of the grain interaction and crystal orientation on the lattice strain evolution in a two-phase polycrystals are investigated. Duplex steel of austenite and ferrite phases with equal volume fraction is selected for the analysis, of which grain arrangement sensitivity is confirmed in the literature through both experiment and simulation (Hedstr$\ddot{o}$m et al. 2010). Analysis on the grain interaction is performed using the results obtained from the finite element calculation based on the model of restricted slip within crystallographic planes. The dependence of lattice strain on grain interactions as well as crystal orientation is confirmed and motivated the need for more in-depth analysis.

사이버대학생의 직장 유무에 따른 고립감, 상호작용, 콘텐츠만족도, 성취도 및 학습지속의향의 구조적 관계 분석 (Multi-group Analysis of Employment Status in Isolation, Interaction, Content Satisfaction, Achievement and Persistence in Cyber University)

  • 주영주;유나연;설현남
    • 한국콘텐츠학회논문지
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    • 제12권5호
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    • pp.525-540
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    • 2012
  • 본 연구에서는 사이버대학에서 고립감, 상호작용, 콘텐츠만족도, 성취도 및 학습지속의향 간의 구조적 관계를 검증하고 직장유무에 따른 차이를 분석하는 것을 목적으로 하였다. 이를 위해 2011년 2학기 A 사이버대학 학생을 대상으로 연구를 수행하였다. 연구결과 첫째, 상호작용은 고립감에 영향을 미치는 것으로 나타났다. 둘째, 상호작용은 콘텐츠만족도에 유의한 영향을 미치는 것으로 나타났으며 셋째, 상호작용이 성취도에 미치는 영향력이 유의한 것으로 나타났다. 넷째로 고립감과 상호작용은 학습지속의향에 영향을 미치는 것으로 나타났다. 마지막으로 직장 유무에 따른 고립감, 상호작용, 콘텐츠만족도, 성취도 및 학습지속의향에서 경로계수 차이를 분석한 결과 집단 간 유의미한 차이는 없는 것으로 드러났다. 이러한 결과를 바탕으로 사이버대학에서의 사이버교육콘텐츠 및 교육의 질 제고를 위해 요구되는 콘텐츠 설계 및 운영전략을 제언하였다.

Adaptive fluid-structure interaction simulation of large-scale complex liquid containment with two-phase flow

  • Park, Sung-Woo;Cho, Jin-Rae
    • Structural Engineering and Mechanics
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    • 제41권4호
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    • pp.559-573
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    • 2012
  • An adaptive modeling and simulation technique is introduced for the effective and reliable fluid-structure interaction analysis using MSC/Dytran for large-scale complex pressurized liquid containment. The proposed method is composed of a series of the global rigid sloshing analysis and the locally detailed fluid-structure analysis. The critical time at which the system exhibits the severe liquid sloshing response is sought through the former analysis, while the fluid-structure interaction in the local region of interest at the critical time is analyzed by the latter analysis. Differing from the global coarse model, the local fine model considers not only the complex geometry and flexibility of structure but the effect of internal pressure. The locally detailed FSI problem is solved in terms of multi-material volume fractions and the flow and pressure fields obtained by the global analysis at the critical time are specified as the initial conditions. An in-house program for mapping the global analysis results onto the fine-scale local FSI model is developed. The validity and effectiveness of the proposed method are verified through an illustrative numerical experiment.

Numerical simulation on jet breakup in the fuel-coolant interaction using smoothed particle hydrodynamics

  • Choi, Hae Yoon;Chae, Hoon;Kim, Eung Soo
    • Nuclear Engineering and Technology
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    • 제53권10호
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    • pp.3264-3274
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    • 2021
  • In a severe accident of light water reactor (LWR), molten core material (corium) can be released into the wet cavity, and a fuel-coolant interaction (FCI) can occur. The molten jet with high speed is broken and fragmented into small debris, which may cause a steam explosion or a molten core concrete interaction (MCCI). Since the premixing stage where the jet breakup occurs has a large impact on the severe accident progression, the understanding and evaluation of the jet breakup phenomenon are highly important. Therefore, in this study, the jet breakup simulations were performed using the Smoothed Particle Hydrodynamics (SPH) method which is a particle-based Lagrangian numerical method. For the multi-fluid system, the normalized density approach and improved surface tension model (CSF) were applied to the in-house SPH code (single GPU-based SOPHIA code) to improve the calculation accuracy at the interface of fluids. The jet breakup simulations were conducted in two cases: (1) jet breakup without structures, and (2) jet breakup with structures (control rod guide tubes). The penetration depth of the jet and jet breakup length were compared with those of the reference experiments, and these SPH simulation results are qualitatively and quantitatively consistent with the experiments.

Prediction of Human Performance Time to Find Objects on Multi-display Monitors using ACT-R Cognitive Architecture

  • Oh, Hyungseok;Myung, Rohae;Kim, Sang-Hyeob;Jang, Eun-Hye;Park, Byoung-Jun
    • 대한인간공학회지
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    • 제32권2호
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    • pp.159-165
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    • 2013
  • Objective: The aim of this study was to predict human performance time in finding objects on multi-display monitors using ACT-R cognitive architecture. Background: Display monitors are one of the representative interfaces for interaction between people and the system. Nowadays, the use of multi-display monitors is increasing so that it is necessary to research about the interaction between users and the system on multi-display monitors. Method: A cognitive model using ACT-R cognitive architecture was developed for the model-based evaluation on multi-display monitors. To develop the cognitive model, first, an experiment was performed to extract the latency about the where system of ACT-R. Then, a menu selection experiment was performed to develop a human performance model to find objects on multi-display monitors. The validation of the cognitive model was also carried out between the developed ACT-R model and empirical data. Results: As a result, no significant difference on performance time was found between the model and empirical data. Conclusion: The ACT-R cognitive architecture could be extended to model human behavior in the search of objects on multi-display monitors.. Application: This model can help predicting performance time for the model-based usability evaluation in the area of multi-display work environments.