반사광 측정 모드에서 금과 은의 쌍금속 표면 플라즈몬 공명 칩의 특성과 임계각을 이용한 굴절률 계산

김형진 ( Hyungjin Kim ),이성엽 ( Sung Youp Lee ),김홍탁 ( Hong Tak Kim ),양기원 ( Ki Won Yang ),손영수 ( Young Soo Sohn ) 한국센서학회 2015 센서학회지 Vol.24 No.6

A bimetallic chip made of gold and silver was investigated in intensity interrogation mode to confirm enhancement of the SPR sensor resolution. Both reflectance curves of the bimetallic chip and the conventional gold chip was acquired and compared. The line width of the reflectance curve of the bimetallic chip was narrower than that of the conventional Au chip, resulting in steeper tangential slope. The reflectance was monitored at the angle related to the steepest tangential slope. The change in reflectance of the bimetallic chip was larger than that of the Au chip. The critical angle was analyzed by differentiating the reflectance with respect to incident angle twice. Acquiring the critical angle regarding to the sample informs the refractive index of the sample. Using various concentration of Bovine Serum Albumin, we confirmed that refractive index was linearly related to variation of reflectance of the bimetallic chip.

집중 소자를 사용한 이중 대역 루프형 그라운드 안테나 설계

이형진(Hyungjin Lee),류양(Yang Liu),이재석(Jaeseok Lee),김형훈(Hyung-Hoon Kim),김형동(Hyeongdong Kim) 한국전자파학회 2012 한국전자파학회논문지 Vol.23 No.5

본 논문에서는 집중 소자로 임피던스 대역폭과 공진 주파수 컨트롤이 가능한 이중 대역 루프형 그라운드 안테나를 제안한다. 제안된 안테나의 이중 대역 특성은 기존의 루프형 그라운드 안테나의 형태에 추가적인 공진루프 급전 구조를 삽입하여 구현하였다. 적절한 캐패시터와 인덕터를 사용하여 2.45 GHz와 5.5 GHz 대역에서 VSWR<3에서 각각 85 MHz와 725 MHz의 임피던스 대역폭을 만족시켰으며, 시뮬레이션과 측정 결과를 통하여 그 타당성을 입증하였다. 제안된 안테나의 면적은 10×5 mm<SUP>2</SUP>로 작은 크기를 갖고 있을 뿐만 아니라, 구현하고자 한 이중 대역에서 좋은 방사 패턴과 안테나 효율을 나타내었다. This paper presents a dual band loop-type ground antenna using lumped-elements that control the impedance bandwidth and resonant frequency. The dual-band operation of the proposed antenna is realized by inserting an additional resonated loop feed structure into the reference ground antenna. As the proper value of the capacitor and the inductor are chosen, the impedance bandwidth of our antenna with voltage standing wave ratio(VSWR) equal to 3 is 85 MHz and 725 MHz at the 2.45 and 5.5 GHz frequency band, respectively. Its validity is demonstrated via both the computed and measured results. Good antenna patterns and efficiencies are achieved at the dual frequency bands, as well as the physically small antenna element size(10×5 mm<SUP>2</SUP>).

SCM과 6 Sigma를 결합한 혁신 방법론 개발

박형진(Hyungjin Park),김형태(Hyoungtae Kim),윤정기(Junggee Yoon),양홍모(Hongmo Yang),정방환(Banghwan Chung),가철순(Chulsoon Kah),박흥옥(Heungok Park) 대한산업공학회 2006 대한산업공학회지 Vol.32 No.4

자동변속기의 직접유압제어 시스템 개발에 관한 연구

양갑진(Kabjin Yang),이현우(Hyunwoo Lee),이창훈(Changhoon Lee),성형진(Hyungjin Sung),김현철(Hyunchul Kim),이기수(Gisu Lee) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11

An automatic transmission of a car is computerized for fuel efficiency improvement with safety and the convenience, and is applied, and is the tendency which expands. The best in new technical development by a domestic and abroad professional part producer to an automatic transmission and system development for gear control. But it's lack of the quality standard and the reliability by the country and is the standard which evades development and depends on overseas forward part traders for technical development. The automatic transmission attachment rate increases direct hydraulic control system for gear control of an automatic transmission by Customer Request as well as global market competitive power securement and market preceding acquisition through the import substitution effect by development this, so technical development to this field and technological growth are requested by a completed car and a close consortium. In this paper cutting down time being needed for an optimization design and trial product development through an electromagnetic field interpretation and a computational fluid dynamics interpretation in development of the hydraulic control solenoid valve applied to an automatic transmission, and contributing to development expense reduction effect by efficiency-development tends to grasp an hydraulic control solenoid valve and valve body matching.

고단 자동변속기용 유압 비례제어 솔레노이드 밸브 개발

양갑진(Kabjin Yang),이현우(Hyunwoo Lee),이창훈(Changhoon Lee),성형진(Hyungjin Sung),김현철(Hyunchul Kim),이기수(Gisu Lee) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11

An automatic transmission of a car is computerized for fuel efficiency improvement with safety and the convenience, and is applied, and is the tendency which expands. The best in new technical development by a domestic and abroad professional part producer to an automatic transmission and system development for gear control. But it’s lack of the quality standard and the reliability by the country and is the standard which evades development and depends on overseas forward part traders for technical development. The automatic transmission attachment rate increases direct hydraulic control system for gear control of an automatic transmission by Customer Request as well as global market competitive power securement and market preceding acquisition through the import substitution effect by development this, so technical development to this field and technological growth are requested by a completed car and a close consortium. In this paper cutting down time being needed for an optimization design and trial product development through an electromagnetic field interpretation and a computational fluid dynamics interpretation in development of the hydraulic control solenoid valve applied to an automatic transmission, and contributing to development expense reduction effect by efficiency-development tends to grasp an hydraulic control solenoid valve and valve body matching.

자동변속기의 직접유압제어 시스템 개발

양갑진(Kabjin Yang),이현우(Hyunwoo Lee),이창훈(Changhoon Lee),성형진(Hyungjin Sung),김현철(Hyunchul Kim),이기수(Gisu Lee) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5

An automatic transmission of a car is computerized for fuel efficiency improvement with safety and the convenience, and is applied, and is the tendency which expands. The best in new technical development by a domestic and abroad professional part producer to an automatic transmission and system development for gear control. But it"s lack of the quality standard and the reliability by the country and is the standard which evades development and depends on overseas forward part traders for technical development. The automatic transmission attachment rate increases direct hydraulic control system for gear control of an automatic transmission by Customer Request as well as global market competitive power securement and market preceding acquisition through the import substitution effect by development this, so technical development to this field and technological growth are requested by a completed car and a close consortium. In this paper cutting down time being needed for an optimization design and trial product development through an electromagnetic field interpretation and a computational fluid dynamics interpretation in development of the hydraulic control solenoid valve applied to an automatic transmission, and contributing to development expense reduction effect by efficiency-development tends to grasp an hydraulic control solenoid valve and valve body matching.

직접유압제어 액츄에이터 최적화 설계에 관한 연구

양갑진(Kabjin Yang),이현우(Hyunwoo Lee),이창훈(Changhoon Lee),성형진(Hyungjin Sung),김현철(Hyunchul Kim),이기수(Gisu Lee) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11

An automatic transmission of a car is computerized for fuel efficiency improvement with safety and the convenience, and is applied, and is the tendency which expands. The best in new technical development by a domestic and abroad professional part producer to an automatic transmission and system development for gear control. But it"s lack of the quality standard and the reliability by the country and is the standard which evades development and depends on overseas forward part traders for technical development. The automatic transmission attachment rate increases direct hydraulic control system for gear control of an automatic transmission by Customer Request as well as global market competitive power securement and market preceding acquisition through the import substitution effect by development this, so technical development to this field and technological growth are requested by a completed car and a close consortium. In this paper cutting down time being needed for an optimization design and trial product development through an electromagnetic field interpretation and a computational fluid dynamics interpretation in development of the hydraulic control solenoid valve applied to an automatic transmission, and contributing to development expense reduction effect by efficiency-development tends to grasp an hydraulic control solenoid valve and valve body matching.

골채채취 후 수변환경 변화와 사주 내 식생이입

공학양 ( Hak Yang Kong ),김세미 ( Semi Kim ),이재윤 ( Jaeyoon Lee ),이재안 ( Jae An Lee ),조형진 ( Hyungjin Cho ) 한국물환경학회(구 한국수질보전학회) 2016 한국물환경학회지 Vol.32 No.2

This study investigated changes of hydrology, soil characteristics, riparian vegetation communities, and geomorphology in sandbars before and after sand-mining to determine the effect of sand-mining at upstream of Guemgang and Bochungcheon streams in Korea. Sand-mining events affected the mining area. They supplied organic matters and nutrients during flood. Sediment deposition caused soil texture change and expansion of vegetation area. However, riverbeds were stabilized after the disturbance. According to the analyses of aerial photographs, the vegetation area was significantly expanded in both dam-regulated streams and dam-unregulated streams after sand-mining. Willow shrubs advanced in disturbed area at an average of 10 years after sand-mining. It took willows trees 10.6 years to become dominant communities. Therefore, it took a total of 20.6 years for new riparian forest to form in sandbar after sand-mining. Our results confirmed that stream flow condition were dependent on vegetation recruitment in dam-regulated streams and dam-unregulated streams. For willow recruitment in unregulated streams, calculation of water level below dimensionless bed shear stress is important because low water level variation is a limiting factor of vegetation recruitment.

자동변속기의 직접유압제어 시스템 개발에 관한 연구

양갑진(Kabjin Yang),이현우(Hyunwoo Lee),이창훈(Changhoon Lee),성형진(Hyungjin Sung),김현철(Hyunchul Kim),이기수(Gisu Lee) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4

An automatic transmission of a car is computerized for fuel efficiency improvement with safety and the convenience, and is applied, and is the tendency which expands. The best in new technical development by a domestic and abroad professional part producer to an automatic transmission and system development for gear control. But it's lack of the quality standard and the reliability by the country and is the standard which evades development and depends on overseas forward part traders for technical development. The automatic transmission attachment rate increases direct hydraulic control system for gear control of an automatic transmission by Customer Request as well as global market competitive power securement and market preceding acquisition through the import substitution effect by development this, so technical development to this field and technological growth are requested by a completed car and a close consortium. In this paper cutting down time being needed for an optimization design and trial product development through an electromagnetic field interpretation and a computational fluid dynamics interpretation in development of the hydraulic control solenoid valve applied to an automatic transmission, and contributing to development expense reduction effect by efficiency-development tends to grasp an hydraulic control solenoid valve and valve body matching.

자동변속기의 직접 유압제어 솔레노이드 밸브 개발

양갑진(Kabjin Yang),이현우(Hyunwoo Lee),이창훈(Changhoon Lee),성형진(Hyungjin Sung),김현철(Hyunchul Kim),이기수(Gisu Lee) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5

An automatic transmission of a car is computerized for fuel efficiency improvement with safety and the convenience, and is applied, and is the tendency which expands. The best in new technical development by a domestic and abroad professional part producer to an automatic transmission and system development for gear control. But it’s lack of the quality standard and the reliability by the country and is the standard which evades development and depends on overseas forward part traders for technical development. The automatic transmission attachment rate increases direct hydraulic control system for gear control of an automatic transmission by Customer Request as well as global market competitive power securement and market preceding acquisition through the import substitution effect by development this, so technical development to this field and technological growth are requested by a completed car and a close consortium. In this paper cutting down time being needed for an optimization design and trial product development through an electromagnetic field interpretation and a computational fluid dynamics interpretation in development of the hydraulic control solenoid valve applied to an automatic transmission, and contributing to development expense reduction effect by efficiency-development tends to grasp an hydraulic control solenoid valve and valve body matching.