새로운 캐릭터 로봇을 위한 무선 워터마킹 기술

朴貴泰,金甲一 明知大學校 産業技術硏究所 2005 産業技術硏究所論文集 Vol.24 No.-

In this paper, we present a wireless watermarking technique for a new character robot. After we insert a sequence of some action codes inaudibly to an audio signal, the character can act the behaviors indicated in those codes by processing sound with a microphone and extracting concealed codes when the pre-processed audio file is played. For example, the robot dances to the music where the action codes were concealed. For this, we propose a modified echo-hiding algorithm. This modified algorithm uses repeated watermarks for robust extraction and integer watermarks for enough data insertion so that it can solve technical problems with the noise generated in the wireless analog channel, attenuation of sound in proportion to distance between a robot and a source of sound, and synchronization. Finally, we verify the performance of the proposed technique through experiments under several conditions.

설비보전관리와 안전정보를 연계한 Web 상에서 지식베이스 진단시스템 구현

박주식,강경식 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-

To keep enterprise's competitiveness on condition of the automatic manufacturing system such as FA, FMS and CIM, all the maintenance problems should be considered seriously in not only production and maintenance but also related industrial safety. As we analyze in the surveys for the maintenance management of domestic enterprises and the causes of industrial accident, there will be necessity of drawing up countermeasures for prevention of industrial accidents and for ensuring expertise maintenance technologies. Based on these analyses, this study studied the safety information system, maintenance management information system, and the machinery condition diagnosis technique by using of the knowledge-based system under the internet environment. This web based knowledge-based diagnosis system can easily provide not only the knowledge of expert about deterioration phenomenon of industrial robot, but also the knowledge of relating safety and facility on everywhere, everytime, Therefore, when we use this system, it is expected to improve the efficiency of business processes in the production and safety.

TiO₂-CaSO₄와 TiO₂-CaCO₃계의 고상반응기구 : TiO₂의 반응성 및 상형성 Reactivity of TiO₂and Phase Forming

김홍대,한인섭,유태석,정윤중 明知大學校 産業技術硏究所 1986 産業技術硏究所論文集 Vol.5 No.-

For to detect the mechanism of the product phase and the assignment of the two reactant on the solid state reaction of TiO₂ with the CaSO₄ and CaCO₃ respectively at the reaction temperature 900℃ - 1400℃, the refractive microscope, scanning electron microscope, and electron dispersive spectroscope analysis were examined. For the reaction of TiO₂ with CaSO₄ the product phase which earned is CaTiO₃perovskite and from the first, the intermediate product of TiO₂· CaO·SO₂ was formed. However, the main product phase is Ca₃Ti₂O7, which is coexisted in the product layer, at the reaction of TiO₂ with CaCO₃·TiO₂ was diffused into CaSO₄ and CaCO₃ reactant side is both two reaction. Specially, in the case of CaCO₃, the transfer of TiO₂ is rapid through the pore, which was formed with vaporization of CO₂ gas.

무선 사업자간 핸드오프 보안 메커니즘 연구

金亨哲,張赫洙 明知大學校 産業技術硏究所 2004 産業技術硏究所論文集 Vol.23 No.-

무선 통신 사업자(Wireless ISP)들은 사람들이 많이 모이는 핫스팟 지역을 중심으로 무선랜을 이용한 초고속 무선 인터넷 서비스 네트워크를 구축하고 있다. 이러한 가운데 무선랜에서의 암호화 과정중에 키 유출로 인하여 보안 결함이 밝혀지고, MAC 주소를 기반으로 하는 단방향 인증으로 인하여 개인 프라이버시 침해 문제가 사회적인 현안으로 등장하였다. 이러한 위험을 감소시키기 위해 동적인 키 관리 및 분배와 단말과 인증 서버간의 상호 인증 메커니즘이 요구 되어지고 있으며 무선랜이 향후 정보 통신 기반 구조로 자리하기 위해서는 사용자의 이동성을 보장하기 위한 효과적인 핸드오프 기술이 절실하다. 본 논문에서는 무선랜 공중 액세스망의 보안성 강화를 위하여 가입자 인증 및 키 관리 기술을 분석하고 현재 표준화가 진행 중인 EAP-TLS를 기반으로 하여 동일 네트워크 내의 서로 다른 AP 간에 메시지 전달 시 발생할 수 있는 키 유출을 막기 위해 메시지의 전달 경로를 바꾸고, 좀 더 높은 보안성을 제공하기 위해 공개키를 이용한 효율적인 핸드오프 메커니즘을 제안한다.

건설(토목)분야의 유비쿼터스 기술의 응용에 관한 연구

장복진,윤병만,여운광 明知大學校 産業技術硏究所 2005 産業技術硏究所論文集 Vol.24 No.-

It is recently recognized that ubiquitous computing revolution has been already beginning at various fields of industry. It is not exceptional in civil engineering. The primary reason is that, as the next generation of information technology (IT), certainly, it will be a very important kernel to provide extreme advantages to human beings in the future. Therefore, the fundamental concept of ubiquitous technology is introduced and reviewed. Also the possibility of application to civil works is investigated in this study. In addition, some elementary monitoring devices with this concept are, as example, designed to apply at the construction site.

기존 도시 상업지역의 고밀고층화에 대한 사회기여적 지구단위계획 연구

박찬무 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-

While the industrialization process was develping, the rapid urbanization development has brought up high-rise building in Metro area in Seoul. Therefore they may be feasible in economic development but the city may lose traditional community based on cooperation and self-help regional identity. Existing urban planning policy has chased to profit only for cooporation not to social value capture for citizen. Therefore, it is necessary for building a city structure and social space for community possible to revive the self-identity. This research intends to propose district unit planning as a new urban plan for Glocalization which is 21th century's phenomena. It also investigates social value captured urban district plan which composes residents' participatory process of development and commercial unit district for citizen to resurrect self-help regional identity in social space i.e. Local culture center for park-link family oriented District Unit Plan.

버스정보시스템의 품질관리 평가기법 연구

임성빈,금기정,김원태,손승녀 明知大學校 産業技術硏究所 2006 産業技術硏究所論文集 Vol.25 No.-

버스정보시스템(BIS: Bus Information System)이란 기존의 버스교통에 첨단의 정보ㆍ통신, 컴퓨터ㆍ전자, 제어 등의 기술을 접목시켜, 실시간으로 버스위치를 파악하고, 수집된 정보를 가공하여, 버스 이용자 및 관리자에게 각각의 필요한 운행정보를 제공하는 시스템이다. 현재 국내의 버스정보시스템 또는 버스관리시스템(BMS)의 추진이 활발히 진행중이다. 이와 같이 각 자치단체 단위로 설치, 운영되고 있는 버스정보시스템(BIS) 교통정보의 질적 향상은 향후확대 사업 및 운영관리 측면에 있어서 중요한 사안이다. 따라서 본 연구는 기 구축 운영중인 안양시 버스정보제공서비스를 대상으로, 품질을 극대화하고 유지하는 총체적 품질관리에 적용할 수 있도록 시스템의 수준에 적합한 평가항목을 선정하여 평가함으로써 시스템의 최적의 질(quality)을 유도하는데 기여하고자 하였다. 이는 궁극적으로 대중교통서비스의 질적 향상을 도모하고 대중교통 이용 활성화 및 보다 효율적인 대중교통운영으로 도시교통문제를 적극적으로 해결할 수 있는 방안으로서 매우 유익하고 시기적절한 연구로 판단된다.

공학교육 프로그램 평가체제 구축 및 운영

김인택,강상희 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-

Assessment processes for engineering programs are presented in this paper. Some results obtained from the case studies in America and the assessment process developed in Myongji University for accrediting programs in engineering are introduced.

전략적 건설지식체계구축을 위한 Framework 개발

鄭榮洙,姜昇希,李揆現,崔寅星 명지대학교 산업기술연구소 2005 産業技術硏究所論文集 Vol.24 No.-

The purpose of this paper is to develop a framework for construction knowledge management. The variables of proposed framework includes knowledge types strategic business functions, and engineering data types. Thus, This study defined knowledge types, strategic business functions, and engineering data types of a case study construction company in order to form a framework. A knowledge action plan of the case construction company was also developed by using the framework. The proposed framework and knowledge action plan for the company will contribute to develop knowledge management system related to engineering of strategic business functions.

파라핀 슬러리를 이용한 지역냉방기술의 개발에 관한 연구

최은수,박범진 明知大學校 産業技術硏究所 1995 産業技術硏究所論文集 Vol.14 No.-

A new technique using a paraffin slurry in a convective heat transfer was developed recently. The objective of the present study is to apply the developed technique to a district cooling. It needs high thermal capacity and low pressure drop. So far, we were concentrating on the second requirement; the low pressure drop. In order to have it we studied Non-Newtonian flow, espicially shear-thinning fluid. From now on, we can concentrate on the first requirement; the high thermal capacity. Small particles of paraffin were scattered in the carrier fulid, water. When they were melted on the heating test section, a high effective heat capacity can be expected from the fluid.