• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2002년도 하계학술대회 논문집 Vol.3 No.2
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• pp.849-852
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• 2002

Recently, amorphous selenium is used as x-ray conversion material for flat-panel x-ray detector. In this paper, we investigated the effect of breakdown under high voltage and leakage current in PN-type multi-layer structure based on p-type a-Se and n-type conductive thin film. Experimental results show that the multi-layer based detector reduced leakage current because n-type CeO2 conductive layer prevent from hole injection into a-Se layer from collection electrode, Also, the breakdown voltage was improved by dielectric layer between a-Se and top electrode.

• 한국고분자학회:학술대회논문집
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• 한국고분자학회 2006년도 IUPAC International Symposium on Advanced Polymers for Emerging Technologies
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• pp.332-332
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• 2006

Well difined sulfonated styrene and n-butyl acrylate (nBA) block copolymers were synthesized by CuBr catalyzed living radical polymerization followed by acification by thermolysis. Neopentyl styrene sulfonate (NSS) was polymerized with PnBA macroinitator precursor ($M_{n}=19,500,\;PDI\;<\;1.09$) and CuBr catalyst with N,N,N',N' -pentamethylethyleneamine (PMDETA) to give nBA-NSS block copolymer with narrow polydispersity ($M_{n}=29,900,\;PDI\;<\;1.15$). PNSS segments in the block copolymer were then acidified by thermolysis at $150^{\circ}C$ resulting in polystyrene segments with 100 % sulfonic acid groups.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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• pp.1577-1582
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• 2006

Tandem OLED structures formed by connecting two or more low-voltage electroluminescent units (stacks) are effective for achieving high efficiency at low current density as well as long operational lifetime. We have fabricated white emitting tandem structures with two or three low-voltage white-emitting stacks using transparent organic "PN"-type connectors. Three- stack white tandem structures with efficiency greater than 24 cd/A at D65 and operational stability of about 110,000 h. (extrapolated) at $1000\;cd/m^2$ have been demonstrated. With a stacked structure, the power consumption for displays using an RGBW format can be reduced by 25% compared to previously described formulations. We have also fabricated advanced white tandem structures where the color gamut (NTSC x,y ratio) has been improved to greater than 70% using standard color filters. The white OLEDs can also be used to increase the colorrendering index CRI (>80%), an important consideration for solid-state lighting.

• 전기전자학회논문지
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• 제3권2호
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• pp.285-294
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• 1999

본 논문에서는 다치논리 함수의 GRM(Generalized Reed-Huller)계수 생성 방법에 관하여 제안하였다 일반적인 GRM계수의 생성 방법은 Reed-Muller(RM) 전개식를 이용하여 극수 P=0의 RM계수를 구하고 이를 확장하여 모든 GRM계수를 구하는 방법을 사용한다. 본 논문에서 제안한 알고리즘은 모든 극수의 GRM계수를 구하지 않고 극수의 0의 개수를 순차적으로 비교해가며 GRM계수를 구하는 방식이다.

• 품질경영학회지
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• 제22권4호
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• pp.13-27
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• 1994

This study is concerned with design of EWMA control charts for counted data. Control charts for the fraction defective and the number of defects are designed. Performance analysis is accomplished for validity of the designed EWMA control charts. Average run length(ARL) is adopted as a criterion for comparison. Simulation results show that the designed EWMA control charts have shorter ARL than pn, p and c control charts when the fraction nonconforming or the average defect number are shifted. This means that the designed control charts can detect the out of -control state of the process more fastly than the traditional control charts.

• 천문학회보
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• 제43권1호
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• pp.67.1-67.1
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• 2018

We present high-resolution near infrared (IR) spectra of two candidate planetary nebulae (PNe) that were serendipitously found toward the Galactic center (GC). Our spectra obtained using GNIRS on Gemini North reveal strong Br ♑ and He I recombination lines. In one of the targets, we confidently detect Pa ♌ emission. Based on Br ♑ and Pa ♌ lines, we estimate a foreground reddening to be Av=27 mag, which confidently puts this object at the GC distance. Along with the presence of highly excited emission lines such as [S IV], [Ne III], [Ne V], and [O IV] detected in the mid-IR spectra from the Spitzer Space Telescope, and the extended emission in the Pa ♋ narrow-band image from the Hubble Space Telescope, this makes it the first spectroscopically confirmed PN in the GC.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2010년도 제39회 하계학술대회 초록집
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• pp.206-206
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• 2010

1차원 나노 소재 중 ZnO 나노선은 우수한 전기적, 광학적 특성으로 최근 센서, 디스플레이등 다양한 정보전자 소자에 활용 가능성이 높아지고 있다. 현재 보고된 ZnO 나노선 소자는 주로 단일선이나 랜덤 네트워크 형태로 제작되어 소자의 공정성, 재현성 및 균일성 확보가 매우 중요한 이슈가 된다. 본 연구에서는 화학기상증착법으로 성장한 ZnO 나노선을 슬라이딩 트랜스퍼 공정을 통하여 원하는 기판에 정렬된 형태로 전이하여 전계방출소자 (field effect transistor) 어레이를 제작하고 그 특성을 분석하였다. 또한, p-형으로 도핑된 Si 기판을 패터닝하여 정렬된 ZnO 나노선과 pn-정션 소자를 제작하여 정류특성과 electroluminescence 특성을 분석, 설명하였다.

• 한국임상수의학회지
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• 제14권2호
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• pp.185-194
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• 1997

This study was conducted to assess the application of spectrograms in the diagnosis of laryngeal paralysis and the arytenoidopexy with bilateral vocal cord excision (laryngofissure) for the relief of laryngeal paralysis. Laryngeal paralysis represented two types of stridor A and B (AN, PN). There were significant differences in Dominant Frequency ( DF, p<0.01), which were $3590{\pm} 209.81 Hz, 7445\{pm}418.54 Hz$, respectively. After arytenoidopexy with bilateral vocal cord excision (laryngofissure), $PaO_{2} levels (100.57{\pm}7.59 mmHg) were more increased than that (86.5 {\pm} 3.34 mmHg)$ of pre-operative dogs.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2014년도 춘계학술대회
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• pp.553-556
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• 2014

최근 선박 전자 장비들이 디지털 인터페이스 표준을 위해 NMEA(National Marine Electronics Association)에서는 CAN Part B 표준 버스 프로토콜 기반의 네트워크 표준인 NMEA2000 표준을 개정하였다. NMEA2000는 네트워크상에서 PnP 기능을 가지는 멀티토커, 멀티리스너로서 네트워크 관리를 위한 서버가 필요 없는 멀티마스터의 실시간 제어 네트워크이다. 본 연구에서는 NMEA2000 기반의 선박 센서용 프로토콜 변환 알고리즘의 구현과 NMEA2000/CAN/Ethernet/RS422, RS485, RS232 포맷 변환 및 NMEA2000 기반 전용 케이블을 고려한 아날로그 데이터 모듈 외형 설계 및 개발을 목표로 한다. 본 연구를 통해 NMEA2000 핵심 기술의 개발과 적용을 통해 새로운 조선 IT 시장을 선점할 수 있을 것으로 기대된다.

• Asian Pacific Journal of Cancer Prevention
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• 제15권18호
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• pp.7559-7562
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• 2014

Currently the most important prognostic factor in lung cancer is the stage. In the current lung TNM classification system, N category is defined exclusively by anatomic nodal location though, in other type of tumours, number of lymph nodes is confirmed to be a fundamental prognostic factor. Therefore we evaluated the number of mediastinal lymph nodes as a prognostic factor in locally advanced NSCLC after multimodality treatment, observing a significant effect of the number of lymph nodes in terms of OS (p<0.01) and DFS (p<0.001): patients with a low number of positive mediastinal nodes have a better prognosis.