• 한국지능시스템학회논문지
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• 제19권4호
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• pp.538-544
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• 2009

세계적으로 게임 시장이 약한 성장세를 보임에 따라, 기존 게임방식에 식상한 게임 유저들로부터 새로운 컨셉의 게임에 대한 관심이 급부상 하고 있다. 최근, 사용자의 움직임을 인식하여 사용자와 게임간의 상호작용을 가능케 하는 체감형 게임이 인기를 끌고 있다. 체감형 게임은 가상현실(Virtual Reality; VR)기법을 활용한 것으로 사용자의 게임으로의 몰입을 위한 현실감이 중요한 요소로 간주되고 있다. 이에 본 연구에서는 3축 가속도 센서로부터의 신호를 기반으로 사용자의 동작 상황을 효과적으로 분류할 수 있는 체감형 게임 인터페이스를 제안하고자 하며, 제안된 시스템의 유용성 확인을 위해 실제로 제작된 테스트베드 환경 하에서 다양한 실험을 통해 제안된 기법의 유용성을 확인하고자 하였다.

• 패션비즈니스
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• 제17권5호
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• pp.101-119
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• 2013

The purpose of this study is to consider the interactivity which appeared on the fashion media that focus on Showstudio's fashion projects. Showstudio is a famous fashion site that was founded by the famous photographer, Nick Knight, which has displayed interactive projects with fashion designers and artists. The methods of this study are undertaken by theoretical studies and project analysis. The 38 projects under the 'interactive' category are being chosen among archive data and the project explanations, photos and videos provided from the site are studied. Interactivity of fashion projects in Showstudio is considered by main factors such as two-way communication, participation, user control, and responsiveness. Two-way communication appears as transactional communication in the creation process and feedbacks from contents of users. The characteristic of participation appears as participation in the creation process and the practical use of contents. User control appears as control of contents, user interface and streaming media systems. The characteristic of responsiveness appears as real time and synesthesia responsiveness between the user and contents. Showstudio show free communication through digital information transmit system and also indicate the opportunity of innovative interactions among users, media, and contents.

• Journal of Power Electronics
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• 제2권4호
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• pp.250-257
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• 2002

This paper introduces the Interactive Power Electronics Seminar - iPES - a new software package for teaching of fundamentals of power electronic circuits and systems. iPES is constituted by HTML text with Java applets for interactive animation, circuit design and simulation and visualization of electromagnetic fields and thermal issues in power electronics. It does comprise an easy-to-use self-explaining graphical user interface. The software does need just a standard web-browser, i.e. no installations are required. iPES can be accessed via the World Wide Web or from a CD-ROM in a stand-alone PC by students and professionals. Due to the underlying software technology iPES is very flexible and could be used for on-line learning and could easily be integrated into an e-learning platform. The aim of this paper Is to give an introduction to the iPES-project and to show the different areas covered. The e- learning software is available at no costs at $\underline{www.ipes.ethz.ch}$ in English, German, Japanese, Korean, Chinese and Spanish. The project is still under development and the web page is updated in about 4 weeks intervals.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1995년도 하계학술대회 논문집 A
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• pp.440-442
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• 1995

In a recently as renewable energy source photovoltaic(PV) system using solar energy has been very widely researched because of its pollution-free and infinity. Especially many researches are intensively focused on small scale utility interactive PV system which can use dead space and easily make power stabilized from unstable natural energy source. In this system one of the most important matters is islanding protection. Islanding phenomenon appears when power failure occurs. For the safety of utility interactive PV system must has the function of not only system protection but also detection of islanding. This paper describes parallel operating alghorithm using reactive power variation method and twin peak band pass filter. This alghorithm is verified useful by simulation.

• 한국멀티미디어학회논문지
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• 제21권12호
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• pp.1493-1503
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• 2018

We propose an object recognition system and experiential game contents using Kinect to maximize object recognition rate by utilizing underwater robots. we implement an ice hockey game based on object-aware interactive contents to validate the excellence of the proposed system. The object recognition system, which is a preprocessor module, is composed based on Kinect and OpenCV. Network sockets are utilized for object recognition communications between C/S. The problem of existing research, degradation of object recognition at long distance, is solved by combining the system development method suggested in the study. As a result of the performance evaluation, the underwater robot object recognized all target objects (90.49%) with 80% of accuracy from a 2m distance, revealing 42.46% of F-Measure. From a 2.5m distance, it recognized 82.87% of the target objects with 60.5% of accuracy, showing 34.96% of F-Measure. Finally, it recognized 98.50% of target objects with 59.4% of accuracy from a 3m distance, showing 37.04% of F-measure.

• Journal of Power Electronics
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• 제19권1호
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• pp.254-264
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• 2019

This paper proposes an indirect current control technique based on a proportional resonant (PR) approach for the seamless mode transfer of utility interactive inverters. Direct-current and voltage hybrid control methods have been used for inverter control under grid-connected and islanded modes. A large bandwidth can be selected due to the structure of single-loop control. However, this results in poor dynamic transients due to sudden changes of the controller during mode changes. Therefore, inverter control based on indirect current is proposed to improve the dynamic transients by consistently controlling the output voltage under all of the operation modes. A PR-based indirect current control topology is used in this study to maintain the load voltage quality under all of the modes. The design processes of the PR-based triple loop are analyzed in detail while considering the system stability and dynamic transients. The mode transfer techniques are described in detail for both sudden unintentional islanding and islanded mode voltage quality improvements. In addition, they are described using the proposed indirect control structure. The proposed method is verified by the PSiM simulations and laboratory-scale VDER-HILS experiments.

• 한국게임학회 논문지
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• 제19권5호
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• pp.39-52
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• 2019

최근 체감형 스포츠 게임은 시각적 자극 통한 콘텐츠 몰입을 위해 다양한 연구가 진행되고 있다. 그 중 미디어 콘텐츠의 다면 영상 기술은 넓은 시야에 영상을 투사하여 몰입시키기에 적절하지만 캘리브레이션과 시야에 맞는 매핑 작업을 따로 거쳐야한다는 어려움이 있다. 본 논문은 누구나 쉽게 적용 가능한 캘리브레이션 매핑 기술을 개발하고, CAVE 형태의 체감형 필드아처리 게임 공간에 적용한다. 그 결과 콘텐츠의 해상도를 유지하고 왜곡 없는 영상을 통해 체험자에게 공간감 제공이 가능하다는 것을 확인하였다. 본 논문에서 개발한 기술은 소방 훈련 콘텐츠와 같이 높은 몰입이 필요한 훈련 및 교육 분야에도 활용 가능할 것으로 기대한다.

• 한국컴퓨터정보학회논문지
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• 제14권5호
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• pp.55-64
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• 2009

본 논문에서는 양방향 데이터 방송 미들웨어를 위한 검증 및 정합 애플리케이션을 설계하고 구현한다. 이 애플리케이션은 양방향 데이터 방송의 표준인 ACAP과 OCAF 검증 항목을 format, protocol, resource presentation으로 분류하여 구현한다. 따라서 이 애플리케이션을 사용하면 지상파 TV와 케이블 TV에 공용으로 사용되는 디지털 셋탑박스(settop-box)가 ACAP과 OCAF 미들웨어 표준에 따라 개발 되었는지 여부를 검증할 수 있다. 본 논문에서는 양방향 TV 애플리케이션을 실제 방송 환경과 동일한 환경에서 검증할 수 있는 에어코드(Aircode)사의 TYFLYSiTM Verifier를 사용하여 개발한 검증 및 정합 애플리케이션의 성능을 평가하였다. 그 결과 DTB-H650F 셋탑박스의 경우 OCAP, ACAP양방향 데이터방송 미들웨어 표준에 대하여 각각 80%, 95%를 지원하고 있음을 검증할 수 있었다.

• 로봇학회논문지
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• 제19권2호
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• pp.169-175
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• 2024

In this study, we developed control system for stable teleoperation of supermicrosurgical robot platform. The supermicrosurgical robot platform is designed to perform precise anastomosis with micro vessels ranging from 0.3 mm to 0.7 mm. The robotic assistance could help more precise manipulation then manual surgery with the help of motion scaling and tremor filtering. However, since the robotic system could cause several vulnerabilities, control system for stable teleoperation should be preceded. Therefore, we first designed control system including inverse kinematics solver, clutch error interpolator and finite state machine. The inverse kinematics solver was designed to minimized inertial motion of the manipulator and tested by applying orientational motion. To make robot slowly converges to the leader's orientation when orientational error was occurred during clutch, the SLERP was used to interpolate the error. Since synchronized behavior of two manipulators and independent behavior of manipulator both exist, two layered finite state machines were designed. Finally, the control system was evaluated by experiment and showed intended behavior, while maintaining low pose error.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2004년도 제5회 정기학술발표대회 논문집
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• pp.358-361
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• 2004

전자매뉴얼 (IETM)은 시방서와 같은 기술지침서를 단순히 온라인체계로 만드는데 그치지 않고, 시공공법 등의 기술적 정보들을 시각적 정보로 실시간 제공해 주는 시스템이다. IETM을 사용하면 이러한 시각적 정보는 현장실무진들에게 실시간으로 전달될 수 있다. 또한 설계단계의 설계기준 외에 공법 이 적용되는 현장상황 및 공사관련 이력정보들을 실시간으로 현장에서 이용할 수 있다. 본 연구에서는 건설공사의 설계 및 시공단계에 적용 가능한 전자매뉴얼 구성을 위한 개발 방법론을 구성하여 제안하고, 가상적 활용상황을 설정하여 제안된 설계정보 IETM의 활용성을 검토하였다.