• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.22 no.12
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• pp.20-28
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• 2008

It is prevalent to research on the energy saving systems using daylight. Daylight responsive dimming systems are to automatically control lighting output by available daylight for maintaining target illuminance on the workplane. The system application is not popular because of blocked daylight by shading systems. Automated roller shading systems automatically control shade height by sun position and sky conditions. Both daylight responsive dimming systems and automated roller shading systems should be integrated for energy savings and visual luminous environment. In this research, software are developed and integrated for control of integrated systems.

• 발명특허
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• v.16 no.8 s.186
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• pp.32-35
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• 1991

• KIPS Transactions on Software and Data Engineering
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• v.3 no.7
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• pp.271-276
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• 2014

Short message service(SMS) in a mobile communication environment is a very convenient method. However, it caused a serious side effect of generating spam messages for advertisement. Those who send spam messages distort or deform SMS sentences to avoid the messages being filtered by automatic filtering system. In order to increase the performance of spam filtering system, we need to recover the distorted sentences into normal sentences. This paper proposes a method of normalizing the various types of distorted sentence and extracting keywords through automatic word spacing and compound noun decomposition.

• Journal of Digital Contents Society
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• v.15 no.4
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• pp.481-489
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• 2014

In this paper, the automatic standby power blocking socket outlet to reduce standby power by blocking power threshold is implemented. Where, the standby power means a flowing power when a disused power electronic is plugged into the socket outlet. The proposed socket outlet can cut off the standby power by establishing a proper block power threshold electronic device according to each electronic device because it can monitor the amount of power through the smart machines such as the real-time PC or mobile phone and directly control the blocking power threshold. The software is implemented by using Visual Studio software, code vision and SN8 C studio, and the hardware is embodied in ATmega128, SN8F27E93S, USB to UART, and relay etc. Through the simulation, we find that the standby power of the proposed method is similar to that of the conventional method in case of the cellular phone but the standby power of the proposed method is much less than that of the conventional method in case of the computer, air conditioning, and set-top box. Therefore, it is proved that the proposed socket outlet has a superior performance in terms of the standby power.

• Proceedings of the Korean Society for Rock Mechanics Conference
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• 2002.10a
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• pp.104-112
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• 2002

최근 도심지 지하철내 누유로 인한 악취·화재의 위험이 대중매체를 통해 보도되어 사회적 문제로 대두되고 있으며, 개정된 토양환경보전법 및 지하수법에 따라 주유소오염에 대한 정화기준이 강화되고 있어 도심지 주유소와 인접한 천층부 지하철터널의 누유대책 마련이 절실히 요구되고 있다. 도심지 지하철터널의 누유대책을 서울시 지하철 00공구 설계사례를 통해 먼저 지하수 유동분석에 의한 지하수위 검토와 오염자 추적에 의한 누유확산 범위를 파악하고, 두 번째로 누유감지센서에 의한 누유조기경보, 유량계 및 수질센서에 의한 수질data화의 수질 및 유량자동모니터링 시스템을 구축하며, 마지막으로 Oil-Stop 맨홀에 의한 누유분리 차단대책을 제안하고자 한다.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2007.06a
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• pp.456-457
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• 2007

ATCB의 구조 중 아크 소호부는 공기 중에 노출된 금속(그리드)이 일정한 간격을 두고 적층되어 있는 모양을 하고 있다. 아크 소호부의 주기능은 아크를 소호실 안쪽으로 유도하여(기중 차단방식) 여러 개의 짧은 아크로 분할시키며 아크를 냉각, 소멸시켜 전류 차단을 빠르게 하는 것이다. 아크를 구동시키는 소호살의 형상과 구조에 따라 아크의 구동력은 많은 차이를 보이게 된다. 여기서는 신개념의 자동절체 스위치인 ATCB(Automatic Transfer Circuit Breaker)의 그리드의 구조에 따라 아크 구동력을 비교하여 아크 소호부의 최적 형상과 절연구조를 설계, 모델링하였다.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10e
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• pp.70-72
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• 2002

전자우편(E-Mail)은 아주 편리한 통신수단이지만, 무분별한 광고성 스팸메일(Spam-Mail)의 침입과 무단으로 타인의 메일을 가로채거나 변조할 수 있기 때문에 메일의 신뢰성이 문제가 되고 있다. 본 연구에서는 이와 같은 문제를 해결하기 위하여 메일의 제목과 내용의 문자열을 분석하여 자동으로 스팸메일을 구분할 뿐만 아니라 보안도구인PGP(Pretty Good Privacy)를 이용하여 메일을 암호화하고 인증하여 근본적으로 스팸메일을차단하는 시스템을 개발한다.

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.23 no.2
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• pp.73-77
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• 2009

• The KIPS Transactions:PartC
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• v.18C no.2
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• pp.61-70
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• 2011

Even though internet community is becoming the basic communication tool with rapidly changing internet environment, its damage is on the rise due to increasing spam messages of unspecified individuals. Currently, various methods to block spam mails, but studies on block spam messages from being automatically posted in community are still insufficient. This study suggested methods to block spam messages in internet community by collecting spam messages posted in internet community to analyze characteristics and frequencies of the messages and create block regulations. It collects spam messages of all messages saved in database of internet community, analyze the collected messages to create normalized rules that can define spam messages, and inspect spam messages among posted messages by using the regulations to block them. The suggested method has a structure that can block various types of spam messages by using information of spam messages collected and flexibly deal with changing spam message types.

• Journal of IKEEE
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• v.24 no.2
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• pp.665-668
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• 2020

When a node in automotive CAN bus is hacked, such node should be blocked to prevent severe danger in the car. In order to do that, such node should be uniquely identified. However, there is no way to identify individual nodes in a CAN bus. In this paper, a physical layer security method is proposed where individual nodes are identified by assigning unique ID to the nodes during booting process. The proposed method was implemented in a CAN controller using Verilog HDL, and it is verified that the node ID auto-setting and internal attack defense are successfully performed.