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소형화된 구형 SIR을 이용한 대역통과필터 설계 및 제작
남훈,임영석,Nam, Hun,Lim, Yeong-Seog 대한전자공학회 2001 電子工學會論文誌-TC (Telecommunications) Vol.38 No.2
본 논문에서는 소형화된 구형 SIR(Stepped Impedance Resonators)을 이용하여 IMT-2000에 적용할 수 있는 중심주파수 1.95GHz에서 60MHz의 대역폭을 갖는 4-극 준-타원 함수 대역통과필터를 설계 및 제작하였다. 시뮬레이션은 NUFDTD(Nonuniform Finite Difference Time Domain)을 사용하여 3가지 기본 결합구조에 대한 결합계수를 구하였다. 소형화된 구형 SIR은 기존의 마이크로스트립 구형 개방 루프 공진기 필터 보다 50% 이상의 크기를 감소됨을 알 수 있었다. SIR을 대역통과필터에 적용시 제 3고조파 내에서의 스퓨리어스 응답 특성은 최대 19dB의 우수한 특성을 보였으며, 실험한 결과와 시뮬레이션 결과가 잘 일치하였다. In this paper, a four-pole quasi-elliptic function bandpass filter of 1.95GHz center frequency with 60 MHz bandwidth for IMT-2000 using miniaturized square SIR(Stepped Impedance Resonator) is designed and fabricated. The simulation of NUFDTD(Nonuniform Finite Difference Time Domain) is used to design the resonator and to calculate the coupling coefficient of three basic structures. The size reduction of miniaturized square SIR resonator is about more than 50% compare with a square open loop resonator. Bandpass filter using this resonator shows good microwave characteristic with the harmonic suppression of about 19dB. The results of measurements are almost similar to those of simulation.
이남훈 ( Nam Hun Lee ) 한국영화교육학회 2008 영화교육연구 Vol.10 No.-
This paper mainly overlooks process of a study of HD Format. From above investigation, probing the role of computer graphics and special effects in HD feature film is the main concern in this project. As to reach its intent, this paper demonstrates orderly approach to film through special effects and usage of PC software in many degrees with exemplary HD feature film However, this paper not only demonstrates the making of film but also beacons approach to HD feature film with special effects. In fact, many films are made with HD by students, industry, and self-oriented, but these films are made in short period of time and are obscure to define as HD performed due to its character. Vis a Vis, instead of demonstrating all of HD formats, this paper mainly discusses HD formats through “Varicam” by Panasonic in HD feature. Sudden development of HD formats brought budget cut to film production, along with many different attempts in making films. However, it is still not fully understood to those who are not professional in that their usual final formats are mostly in DVD`s or DV tapes. This project will guide them to understand the highly recommended or commonly used HD formats by comparing and researching among the formats. In addition, this will provide usage of DI, Digital Intermediate, which, once was a highly cost task, now is a task that could be performed in personal computers. Of course, it is not as easy as done with highly cost equipments nowadays, but rapid development of PC will soon become near equal to those highly cost equipments, a statement which can be assured with its current ability to perform with 2k resolution. Discreet Toxik and Discreet Combustion in software, and Discreet Lustre for Window in color revision, basically completes DI. To understand how DI performs will beacon to effective production of low budget HD feature film. In the result, acumen of HD task as a nouveau approach to production of film will provide effective and productive Digital society and legitimate understanding of its performance.
전기방사를 이용한 히알루론산 멤브레인의 제조 및 금 나노입자 촉매 담체로의 응용
이남훈(Nam hun Lee),박현민(Hyun Min Park),이상명(Sang Myung Lee),이대원(Dae Won Lee) 강원대학교 산업기술연구소 2018 産業技術硏究 Vol.38 No.1
In this study, hyaluronic acid (HA) was electro-spun to fabricate nanofibrous membranes for support materials. Because HA is very hygroscopic, it is difficult to obtain enough viscosity to apply electrospinning method. Therefore, we mixed HA with polyethylene oxide (PEO) to obtain proper viscosity and added adipic acid (ADH) to promote cross-linking of PEO/HA during electrospinning. The morphology of PEO/HA membrane was optimized according to PEO/HA concentration ratio and spinning rate. Finally, we fabricated gold-nanoparticle-embedded PEO/HA membranes and their catalyst activities were evaluated in tetramethylbenzidine (TMB) oxidation.
다중스크린을 이용한 전통극 활성화 연구 -「달빛아래 태양을 품다」 제작사례를 중심으로-
이남훈 ( Nam Hun Lee ),김태형 ( Tae Hyung Kim ) 커뮤니케이션디자인학회 2012 커뮤니케이션 디자인학연구 Vol.38 No.-
전통극 활성화를 위한 다양한 시도들이 이루어지고 있는 상황에서 본고에서는 다중스크린을 이용해서 영상미디어 퍼포먼스의 형태로 접근하려고 한다. 이에 「달빛아래 태양을 품다」의 사례를 통해 다양한 접근시도들을 논의하고 이에 다중스크린을 활용한 사례를 정리하고자 한다. 이를 증명하기 위해 요셉 스보보다의 이론을 들어 다중스크린의 영상적 효과를 증명하고자 한다. 결국 전통극의 활성화를 위한 다양한 접근 중 영상적 접근을 강조하고 이에 단순한 영상활용이 아닌 다중스크린의 활용적인 부분을 통한 접근법을 대안으로 내세운다. 미디어 포퍼먼스 의 공간이 결국 무대화가 되어 기존의 전통극의 양식을 탈피하고 관객의 참여가 자연스럽게 유도되어 기존의 극장적 프레임이 파괴되고 관객이 주체가 되는 새로운 형태가 된다고 볼 수 있다. Traditional performance for the activation of various attempts made in this paper in situations where using a multi-screen performance in the form of visual media is trying to access, This <under the moonlight cherish the sun> with examples of attempts to discuss various approaches utilizing such cases a multi-screen, would like to clean up. To prove their theory of Joseph, Waynesboro, for a more multi-screen is to prove the effectiveness of the youngsangjeok. Eventually jeontonggeuk youngsangjeok of various approaches for the activation of this simple approach emphasizes the use of imaging applications, not part of a multi-screen as an alternative approach naeseunda through. Media performance as the end stage of the space is a painter, and breaking away from traditional forms of jeontonggeuk the participation of the audience is induced naturally existing geukjangjeok frame is destroyed, the principal audience can see that the new form.