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Bluetooth Scatternet Formation에 관한 연구
안호성(Ho-sung Ahn),황진옥(Jin-ok Hwang),민성기(Sung-gi Min) 한국정보과학회 2004 한국정보과학회 학술발표논문집 Vol.31 No.1A
Bluetooth 칩셋의 생산량을 보면, 보이지 않는 곳에서 Bluetooth의 성장은 계속 되고 있다.[1] 그리고 Bluetooth는 Scatternet을 구성하여 Personal Area Network의 영역을 넘어 Senssor network에 적용하는 것이 가능하다. 그러나 Bluetooth specification[2]에서는 Scatternet Formation 방법에 대해 제안하지 않는다. 이를 개선하기 위해 BTCP (Bleutooth Topology Construction Protocol)[3], Bluetree[4], Bluenet[5], TPSF(Two-Phase Scatternet Formation) protocol[6]이 제안되었다. 본 논문에서는 이러한 protocol들을 개략적으로 설명하고 그에 대한 장단점을 알아보겠다.
안호성(Ho-Sung Ahn),김의창(Yei-Chang Kim) 한국인터넷전자상거래학회 2013 인터넷전자상거래연구 Vol.13 No.1
Water Quality Monitoring System using USN effectuates real time remote monitoring by way of pollution measuring instruments and sensors in anytime, anywhere. It allows preventing the spread of contamination by early examination of various environmental conditions. This paper shows the realization of USN middleware for applying data obtained from utilization of heterogeneous sensor node to Water Quality Monitoring System. Actually, USN middleware allows abstraction of heterogeneous sensor node, data filtering, and event processing etc. We implement Water Quality Monitoring System to monitoring based on PC and mobile equipments including smart phone. The goal of research focuses on Water Quality Monitoring System by smart phone. Also, we estimated the usability of Water Quality Monitoring System through analyzing its efficiency, and also tried to improve the reliability of the system by minimizing the overhead and response time.
태양광 발전용 양방향 인버터를 이용한 독립계통의 설계 및 구축
안호성(Ho-Sung Ahn),이명배(Myoung-Bae Lee),정형용(Jung Hyung Yong),백동현(Back Dong Hyeon),최광주(Choi Gwang ju),김진형(Kim Jin Hyoun) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.4
This paper presents the way of off-grid system design and establishment using bi-directional inverter which has the features of both charger and inverter. The bi-directional inverter acts as a grid forming voltage source for off-grid system and also, can act as a current source to feed power to the off-grid when parallel operation is necessary with generator. These features of bi -directional inverter make it possible each components of the off-grid are coupled to AC and contributes more flexibility to the off-grid system design.
안호성(Ho-Sung An),김재철(Jea-Chul Kim),남윤석(Yoon-Seok Nam) 대한전자공학회 2016 대한전자공학회 학술대회 Vol.2016 No.6
In this papar, It is descripted realistic media test-bed system constructing in the Realistic Media Result Product Promotion Group. The Realistic media test-bed system consist of realistic test-bed transmission system, realistic reappearance system, realistic service system and realistic experience system, It is constructed ‘Integrated test environment for realistic media transmission test-bed system’ combined realistic test-bed transmission system and realistic experience system. It is constructed ‘portal system infra for realistic media service’ combined realistic test-bed transmission system and realistic service system. It is constructed ‘test infra for realistic media service’ combined realistic test-bed transmission system and realistic experience system.
안호성(Ho-sung Ahn),김재범(Jai-Beom Kim),서흥교(Heung-kyo Seo),오혜원(Hye-won Oh) 한국전자거래학회 2008 한국전자거래학회 심포지움 및 기타간행물 Vol.- No.-
The success of Nintendo’s Wii has changed the paradigm of console game. Existing games and consoles set up the game-playing system of complicated commands, narratives, and significantly advanced the degree of difficulty by the device’s excellent capacity and the superiority of graphic in order to draw so called “Game Manias”, while Nintendo established the easy game-playing system for not only game manias but women and elderly people. Such an innovation has carried out the most important role for Nintendo to dominate the market all over the world by 47.4% market share of consoles. In addition, it provided the users with unique interaction and emotional experience. In this study, we analyze the case above in terms of product design strategy, particularly emotional design strategy between Nintendo & Sony.