소형궤도 열차용 유도 전력 전송 시스템 특성해석

민병훈,이병송,Min, Byung-Hun,Lee, Byung-Song 한국조명전기설비학회 2007 조명·전기설비학회논문지 Vol.21 No.3

본 논문에서는 전자 유도 법칙을 이용한 차량용 유도 전력 집전장치가 제안하였으며 전력 전송 특성을 개선하기 위한 전력 집전체의 몇 가지 설계에 관련된 개점을 제시하였다. 또한 다양한 공진 주파수로 동작되는 직렬 공진 컨버터와 연결하여 전력 전송 시스템의 해석을 나타내었다. 동작 주파수와 파라미터의 변동에 대한 시스템의 민감도가 고려되며, 유도 전력 전송 시스템에 있어서 전력은 코일이나 트랙의 형태인 1차 권선을 통하여 하나, 혹은 그 이상의 절연된 급전 코일로 전송된다. 본 논문은 유도전력전송의 집전장치의 구조를 기존변압기와 유사한 등가회로의 파라미터로 구성하고, 공극 및 권선을 고려한 1차, 2차측 파라미터를 설정하여 1차측 급전 주파수의 변화에 따른 집전특성에 대하여 기술하였다. In this paper, the inductive power collector using electromagnetic induction for vehicle such as the PRT(Personal Rapid Transit) system is suggested and son ideas for power collector design to improve tile power transfer performance are presented. And also, the analysis of the inductive power transfer system in conjunction with series resonant converter operating variable high frequency is shown. Of particular interest is the sensitivity of the complete system to variations in operational frequency and parameters. In inductive power transfer system electrical power is transferred from a primary winding in the form of a coil or tract to one or more isolated pick-up coils that my relative to the primary. The ability to transmit power without contact enables high reliability and easy maintenance that allows inductive power transfer system to be implemented in hostile environments. This technology has found application in many fields such as electric vehicles, PRT(Personal Rapid Transit) etc. But, low output power is generated due to a loosely coupled characteristic of the large air-gap. Therefore, we will show you various characteristic of inductive power transfer system as double layer construction of secondary winding, which was divided in half to increase both output current and output voltage, a model of power collector and parallel winding structure, a model of concentration/ decentralization winding and the effects of parameter and operational frequency variation.

영화 속 타자성 분석 - <포도나무를 베어라>를 중심으로 -

민병훈(Min, Byung-Hun) 한국영상제작기술학회 2021 영상기술연구 Vol.- No.35

Director Min Byunghun" s third feature film, < Pruning the Grapevine>(2006) has been constantly interpreted as a kind of growth period that young theological students cannot but undergo in the narrative stream of faith and salvation. It is very interesting to substitute a philosophical thought for an analysis on the film. The philosophical thought is the concept of Other(他者) stressed by E. Levinas. In the film, several beings as alter ego with "the Face of the Other" appear among a series of accidents in which Suhyeon, a theological student, again invokes a conflict with Sua, his exgirlfriend and comes to feel a sense of guilt. The film symbolically expresses the process in which the subject with falsity, fear and weakness genuinely ask for the Other"s or her forgiveness. Inner truths which have never been said are discovered with the technique of "Otherness" as the uncertain and unlimited world, since a mirror device reinforcing the three-dimensional characteristics of characters, and furthermore, a large Otherness world in which the characters are engaged with each other like toothed wheels and which therefore covers the whole space-time in the film were established. By analyzing <Pruning the Grapevine>, the Otherness-centered film, this study emphasizes a limit of the subject and the necessity of Other. In addition, only altruistic attitudes with which one can face and be responsible for things different from him/her does not allow him/her to recognize the world as a target to be conquered, but to progress toward the future. It can be also found that the communication with God, which we cannot predict, would begin, only if we are not afraid of God"s mask created by us and prune false grapevines.

PET/Nylon66/Clay 나노복합재료의 열적물성 및 표면특성

이민호 ( Min Ho Lee ),구자훈 ( Ja Hun Ku ),민병훈 ( Byung Hun Min ),김정호 ( Jeong Ho Kim ) 한국공업화학회 2011 공업화학 Vol.22 No.5

본 연구에서는 PET와 Nylon66의 블렌드에 몬모릴로나이트(PM) 또는 유기화제로 개질된 clay (Cloisite 25A 또는 15A)를 첨가하여 PET/Nylon66/clay 나노복합재료를 제조하였다. 나노복합재료는 용융삽입법을 이용하여 제조하였고 DSC 측정을 이용하여 분석한 결과 clay의 첨가로 인해 PET/Nylon66 블렌드의 결정화특성이 변화되는 것을 확인하였다. 특히 C25A가 PET/Nylon66 블렌드와의 상호작용이 가장 커서 결정화온도를 가장 크게 변화시키는 것으로 나타났다. 나노복합재료의 표면을 AFM으로 관찰한 결과에서도 C25A를 이용한 나노복합재료가 가장 표면의 굴곡이 적어서 상대적으로 표면이 균일한 것으로 나타났고 기계적 물성측정에서도 전반적으로 C25A를 이용한 나노복합재료가 우수한 물성을 나타내는 것으로 관찰되었다. 각 나노복합재료의 표면 극성도를 조사하기 위하여 접촉각 측정을 하였는데 유기화 정도가 클수록 표면의 접촉각이 커져서 극성이 낮아지는 것을 확인하였다. Nanocomposites of blends of polyethyleneterephthalate (PET) and polyamide66 (Nylon66) containing natural and organically modified montmorillonite clays (PM, Cloisite((R)) 25A and 15A) were prepared by melt mixing. DSC results showed that the addition of clay changed the crystallization behavior of PET/Nylon66 nanocomposites. Clay C25A was observed to most significantly change the crystallization temperature than other clays in blends of PET and Nylon66, which may be caused by the difference in interaction with matrix polymers. AFM results also showed that the lowest value of surface roughness was observed for nanocomposites containing C25A indicating the smooth and relatively homogenous surface. Mechanical properties measurement showed the similar results. Contact angle was measured to study the difference in hydrophobicity. An increase in contact angle was observed for nanocomposites with C25A or C15A due to the increased hydrophobicity.

농산물 안전인증을 위한 AIGT 시스렘의 설계 및 구현

정회경,유성재,김기태,민병훈,Jung Hoe-Kyung,Yu Seong-Jae,Kim Ki-Tae,Min Byung-Hun 한국정보통신학회 2006 한국정보통신학회논문지 Vol.10 No.7

최근 정보 매체들의 발달로 인해 소비자들이 식품문제에 대한 다양한 정보를 접하게 되면서 농산물의 안전성에 대한관심이 점차 높아지고 있다. 이런 가운데 국내의 농업환경은 농산물의 안전을 인증할만한 체계를 갖추지 못하고 있으며, 이런 상황이 계속 된다면 우리 농산물은 경쟁력을 잃고 외국 농산물들에게 시장을 내어주게 될 우려가 있다. 이에 본 논문에서는 농업환경을 개선하여 안전성이 높은농산물을생산하고투명한정보를제공하여 소바자들의 신뢰성을 높일 수 있도록 AIGT(Agricultural Information Gathering and Tracking) 시 스템을 설계 및 구현하였다. 또한, 국내 농업환경에 맞는 데이터 구조를 정의 하였으며, 효율적인 환경개선을 위해 모니터링과 화상회의를 도입하였다. Recently, customers interest increase in the agricultural product safety when receiving the many information about food problem due to the development of media. Such amid, domestic agricultural environment don't have a system that safety certification of agricultural product. At this rate, domestic agricultural products will decrease the competitive power and apprehend by the giving a market to foreign agricultural product. In this paper, we designed and implementation of AIGT system for the improvement of agricultural environment to producing the agricultural product safety and customers' reliability increase to offering clear information. Also, we defined the right data structure for agricultural environment. The monitoring and video conference are imported for efficient improvement of environment.

이산시간 필터와 델타 시그마 에이디씨를 이용한 모바일 티브용 이산시간 알에프 리시버 구현

이영재(Young-Jae Lee),민병훈(Byung-Hun Min),호아이남(Hoai-Nguyen Nam),김성도(Seong-Do Kim),유현규(Hyun-Kyu Yu) 대한전자공학회 2010 대한전자공학회 학술대회 Vol.2010 No.6

The discrete-time RF receiver intended for mobile TV applications is developed to be easily merged with digital front-end (DFE) with excellent performances. The digital noise cancellation logic block of MASH 2-2 delta-sigma modulator is directly connected with DFE and reduce its quantization noise. A discrete-time DS-ADC predicting a SNR of 70dB over 4MHz signal bandwidth at a sampling rate of 250MHz is cascaded with switched capacitor filter through the clock synchronization to eliminate the signal loss between SCF and DS-ADC. The sensitivity for DVB-H system is about -90dBm with a power consumption of 100mW.

다성분 혼합 기체에 대한 수소 PSA 에서 세정기체의 영향

김선희(Sun Hee Kim),민병훈(Byung Hun Min),서성섭(Sung Sub Suh) 한국공업화학회 2002 응용화학 Vol.6 No.1

젊은 여자에서 체중 감량을 위한 한약 복용 후 생긴 우측 허혈성 대장염 1예

김남준 ( Nam Jun Kim ),김충훈 ( Chung Hun Kim ),조진현 ( Jin Hyun Cho ),고성민 ( Sung Min Ko ),민병훈 ( Byung Hoon Min ) 대한장연구학회 2011 Intestinal Research Vol.9 No.3

Ischemic colitis has a relatively high prevalence in the elderly population with underlying vascular disorders such as hypertension and usually occurs on the left side of the colon. However, ischemic colitis also rarely occurs in healthy young adults with no risk factors. Herbal medication use is increasing, particularly for weight loss. Ischemic colitis associated with herbal medication use has been rarely reported. Here, we describe a case of right-sided ischemic colitis in a young woman that was potentially linked to the use of herbal medication. An 18-year-old woman was admitted to our emergency department with abdominal pain and bloody diarrhea for 1 day. Her medical history was unremarkable for bowel ischemia risk factors. However, she had taken herbal medication for weight loss for the past 2 weeks. Abdominopelvic CT showed diffuse wall thickening with decreased mucosal enhancement from the ascending to the transverse colon. A colonoscopic biopsy specimen showed coagulative necrosis of the mucosa, hemorrhage, and inflammatory cell infiltration. The abdominopelvic CT, colonoscopy, and biopsy findings were compatible with ischemic colitis. Her abdominal pain and bloody diarrhea improved completely with conservative management, and she was advised to discontinue the use of herbal medications. (Intest Res 2011;9:230-233)

연구논문 : 수종 딸기 품종의 지역별 화아분화기 및 화아발육 특성

김운섭 ( Woon Seop Kim ),김태일 ( Tae Il Kim ),장원석 ( Won Suk Jang ),민병훈 ( Byung Hun Min ),윤화모 ( Wha Mo Yoon ) 한국국제농업개발학회 2005 韓國國際農業開發學會誌 Vol.17 No.4

근접장 시스템의 2 축 deck mechanism

정미현(Mi-Hyeon Jeong),박홍수(Hong-Soo Park),이성훈(Seong-Hun Lee),서정교(Jeong-Kyo Seo),최인호(In-ho Choi),민병훈(Byung-Hoon Min) 한국소음진동공학회 2007 한국소음진동공학회 학술대회논문집 Vol.2007 No.11

요관류내 결석과 요관 결석을 동반한 좌측 완전 중복요관 1예

김주홍,민병훈,노충희,최희석 인제대학교 1984 仁濟醫學 Vol.5 No.4

There are several complications associated with duplicated ureter. The ureterocele calcali are not common. We report a unusual case of the ureterocale calculi and ureter stone associated with left duplicated ureter. In this patient, the ureterocele calcali and ureter stone were extracted. The ureterocelectomy and common sheath reimplantation were done. After three months, the patient was checked by I.V.P. and V.C.U.G.. That result was visualized of normal finding.