• Proceedings of the Korean Institute of Communication Sciences Conference
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• 1996.10a
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• pp.1039-1042
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• 1996

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 1996.10a
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• pp.701-705
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• 1996

• 전기산업
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• v.5 no.3
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• pp.85-96
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• 1994

• NEWSLETTER 전기공업
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• no.97-13 s.182
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• pp.30-35
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• 1997

• NEWSLETTER 전기공업
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• no.97-17 s.186
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• pp.30-32
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• 1997

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.33 no.5
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• pp.418-426
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• 2020

This study tested the electrical, structural, and thermal safety of LED lighting products, available on the market. Five recessed LED systems, 20 W each, and five fixed LED systems, 25 W each, were selected. Dielectric strength tests, live part electric shock protection tests, and thermal tests were conducted on the LEDs. These were key tests for user safety, according to the specification of the safety criteria for electric products, KC 60598-1, South Korea. In addition, the wiring temperature of UL1007, 60227 IEC 08, and UTP cables, was measured. The results of the study gave an in-depth examination of the safety of LED lighting systems for users.

• Rapid Communication in Photoscience
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• v.3 no.4
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• pp.76-78
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• 2014

Fluorescent nucleic acids were prepared utilizing the polymerase extension (PEX) reaction to incorporate fluorescent molecules. 2'-Deoxyuridine triphosphate (dUTP) derivatives possessing pyrene molecules as fluorophores were synthesized using the aqueous-phase Sonogashira coupling between 5-Iodo-dUTP and acetylene-linked pyrene molecules. The incorporation of the pyrene (Py)-labeled deoxyuridine triphosphates (PyU) into DNA by polymerase was evaluated by polyacrylamide gel electrophoresis, demonstrating that the PyU can work as a good substrate for the PEX reaction. The fluorescent properties of the functionalized DNA prepared by the PEX reaction were characterized by steady-state fluorescence measurements. The Py-conjugated DNA showed typical emission spectra of the pyrene, and the DNA with two pyrene molecules connected to each other by a diethylene glycol linker exhibited a broadened emission attributed to the electronic interaction between the Py molecules.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.12 no.1
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• pp.136-142
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• 2001

In this paper, a method of canceling and suppressing differential mode crosstalk noise signals caused by non-uniform coupling between two transmission lines in UTP (unshielded twisted pair) modular jacks is discussed. Differential mode crosstalk noise signals in balanced transmission lines with UTP modular jacks were suppressed, by applying field cancellation techniques to this modular jack. To verify an effectiveness of the field cancellation techniques, 8 pin modular jacks were made, and the NEXT (Near End Crosstalk) losses were measured to prove its applicability by the network analyzer(HP8720C) at 100 Mb/s.

• 한국정보통신설비학회:학술대회논문집
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• 2005.08a
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• pp.53-55
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• 2005

일반주택지역을 위한 초고속인터넷 제공방안은 xDSL과 HFC 기술방식이 적용되어 왔다. HFC는 전송속도의 기술적 한계를 가지며, xDSL은 기존 동선을 활용하는 솔루션으로 경제적인 장점을 가지지만 동선 선로품질에 따라 품질저하가 발생한다. 이에 UTP케이블이 기포설된 1등급 아파트에만 공급 가능하였던 100Mbit/s 패스트이더넷을 일반주택지역에 공급하기 위한 유사FTTH 시스템이 개발되어 현장에 운용 중이다. 광코어 절감 및 운용유지 측면을 고려하여 WDM-PON (Wavelength Division Multiplexing-Passive Optical Network, 파장분기 수동형광가입자망) 방식을 채택하였으며, 가입자 인근 전주까지 광케이블이 포설되어 ONU(Optical Network Unit)가 설치되며, ONU로부터 가입자 댁내 단말까지 가공형 UTP케이블을 통해 패스트이더넷을 공급하는 방식이다.

• 전기산업
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• v.8 no.5
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• pp.121-125
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• 1997