• Electrical & Electronic Materials
• /
• v.6 no.6
• /
• pp.573-581
• /
• 1993

0.10Pb(Sb$_{1}$2/Sn$_{1}$2/)O$_{3}$-0.25PbTiO$_{3}$-0.65PbZrO$_{3}$ 세라믹을 소결온도 및 시간을 각각 1200-1250[.deg.C]에서 2, 4, 6시간으로 변화시켜 제작하였으며 시편의 소결조건 및 MnO$_{2}$(0~0.30mol%)첨가량에 따른 잡음특성을 관찰하였다. 초전계수 및 전압감도는 1250[.deg.C]에서 2시간 소결시킨 시편에서 각각 3.49x$10^{-8}$[C/$cm^{2}$K], 147[V/W]의 최대값을 나타내었다. 초전형 적외선 검출기의 잡음특성에 있어 증폭기의 전류잡음 .DELTA.V$_{i}$가 총 잡음전압에 대해 지배적인 경향을 나타내었으며 MnO$_{2}$가 0.24[mol%] 첨가된 1250[.deg.C]에서 2시간 소결시킨 시편에서 가장 양호한 pop-corn잡음특성을 나타내었다.다.

• Proceedings of the KIEE Conference
• /
• 2015.07a
• /
• pp.235-236
• /
• 2015

전력계통의 오프라인 해석에 가장 보편적으로 사용되는 시뮬레이션 프로그램으로는 PSS/E와 DSATools가 있다. 두 개의 프로그램 모두 PSS/E Raw Data Format을 조류계산을 위한 기본 입력 Data로서 사용하고 있다. Raw Data는 모선 번호를 이용하여 계통의 토폴로지를 구성하고, 전력계통 해석을 수행한다. 오프라인 해석에서는 모선 번호를 이용한 해석이 가능하다. 하지만, 모선 개수가 변하는 실시간 환경에서는 모선 번호 기반의 해석이 어렵다. 본 논문에서는 실시간 환경에서 온라인 DSATools를 이용한 해석이 가능 하도록 설비명이라는 개념을 도입한다. 이 설비명 기반의 온라인 DSATools를 실시간 EMS와 연계를 위한 시스템 구성 및 데이터 종류에 대하여 알아보도록 한다.

• Proceedings of the KIEE Conference
• /
• 1998.11a
• /
• pp.319-322
• /
• 1998

This paper presents a comparison of off-line power system analysis packages in terms of the main structure, the computation algorithm, and the I/O structure of programs, which is necessary for the use of the real-time power system simulator to be developed at KEPRI. PSS/E, PSAPAC, EUROSTAG, and EMTP are investigated and a case study is performed to show the compatibility of input data between PSS/E and PSAPAC.

• Journal of Pharmacopuncture
• /
• v.11 no.2
• /
• pp.125-130
• /
• 2008

Objective The purpose of this study was to report the efficiency of Bee Venom Pharmacopunture Therapy by managering of Benign Prostatic Hyperplasia patients. Method Two patients were treated with Bee Venom Pharmacopunture and another Korean Medicine therapy for six weeks and compared with I-PSS(International Prostate Symptom Score) before and after. Results After treated with Bee Venom Pharmacopunture Therapy, 'I-PSS' values decreased significantly all the patients. Conclusions Bee Venom Pharmacopunture Therapy was shown fairly effective to Benign Prostatic Hyperplasia.

• Proceedings of the KIEE Conference
• /
• 2008.07a
• /
• pp.1277-1278
• /
• 2008

Pentacene 박막 트랜지스터의 소스/드레인 전극을 폴리머인 Poly(3,4-ethylene dioxythiophene) poly(styrenesulfonate) (PEDOT:PSS)를 사용하여 잉크젯 프린팅 방법으로 제작하였다. 펜타신 박막 트랜지스터는 열 증착법을 사용하여 폴리며 기판위에 100nm의 두께로 증착하였다. 게이트 절연막은 $SiO_2$ 위에 Polymethly Methacrylate (PMMA)를 증착시킨 double layer를 사용하였다. PMMA 위에 증착시킨 pentacene 결정립이 $SiO_2$ 위에 증착한 pentacene 결정립 보다 크게 성장하였고, double layer의 절연막을 씀으로 인해 게이트 누설 전류가 감소함을 보였다. Pentacene 증착 온도에 따른 결정립 크기를 비교하여 가장 적절한 온도를 찾았다. 프린팅 방법을 사용하여 만든 박막 트랜지스터는 전계효과 이동도가 ${\mu}_{FET}=0.023cm^2/Vs$ 이고, 문턱이전 기울기 S.S=0.49V/dec, 문턱전압 $V_{th}=-18V$, $I_{on}/I_{off}$ 전류비 >$10^3$의 전기적 특성을 보였다.

• Proceedings of the KIEE Conference
• /
• 2011.07a
• /
• pp.1451-1452
• /
• 2011

ZnO 나노선을 수열합성법을 이용하여 합성 하였다. ZnO 나노선을 이용하여 고효울 소자 제작하기 위해 반듯이 필요한 조건인 밀도 조절을 위해 PDOT:PSS를 에어브로쉬를 이용하여 분사하여 Dot의 형태로 열처리 한후 나노선을 합성 하였고 SEM 이미지를 통하여 밀도가 조절된 것을 확인 하였다.

• Proceedings of the KIEE Conference
• /
• 2009.07a
• /
• pp.1332_1333
• /
• 2009

The electrical properties of an inorganic/organic heterojunction has been investigated by spin coating the p-type polymer poly(3,4 ethylenedioxythiophene) : poly(styrenesulfonate) (PEDOT:PSS) on an n-type gallium doping zinc oxide (GZO) film. Current-voltage (I-V) characteristics of the fabricated heterojunction diodes have a good rectifying characteristics. The barrier height is calculated 0.8 eV.

• Steel and Composite Structures
• /
• v.21 no.5
• /
• pp.981-997
• /
• 2016

To avoid the cracks of cast-in-place concrete in shear pockets and seams in the traditional composite beam with precast decks, this paper proposed a new type of prefabricated steel truss-concrete composite beam (ab. PSTC beam) with pre-embedded shear studs (ab. PSS connector). To study the initial cracking load of concrete deck, the development and distribution laws of the cracks, 3 PSTC beams were tested under hogging moment. And the crack behavior of the deck was compared with traditional precast composite beam, which was assembled by shear pockets and cast-in-place joints. Results show that: (i) the initial crack appears on the deck, thus avoid the appearance of the cracks in the traditional shear pockets; (ii) the crack of the seam appears later than that of the deck, which verifies the reliability of epoxy cement mortar seam, thus solves the complex structure and easily crack behavior of the traditional cast-in-place joints; (iii) the development and the distribution laws of the cracks in PSTC beam are different from the conventional composite beam. Therefore, in the deduction of crack calculation theory, all the above factors should be considered.

• Proceedings of the KIEE Conference
• /
• 2000.11a
• /
• pp.214-216
• /
• 2000

This paper presents an comparative study on the effect of STATCOM and UPFC to the power system static analysis. The effect of STATCOM can be analyzed with PSS/E program which is generally used in power system analysis, while UPFC model for static analysis is not provided yet. Thus, UPFC is equivalently represented as a synchronous condenser and load, while the active and reactive power of the specific transmission line and the voltage of the bus is controlled appropriately. This procedure is implemented by IPLAN which is an external macro program of PSS/E. The simulation results show that UPFC is more effective to control the bus voltage than STATCOM, because UPFC can control not only the bus voltage where the parallel inverter is installed but also the active and reactive power flow in the transmission line where the series inverter is installed.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 2003.04a
• /
• pp.123-126
• /
• 2003

Recently, there is a growing concern on the photovoltaic effects using organic materials. This is a phenomena which converts the solar energy into the electrical one. We have fabricated a device structure of $ITO/PEDOT:PSS/CuPc/C_{60}/BCP/AI$. The PEDOT:PSS layer is made by spin coating, and the other organic layers are made by thermal vapor deposition. By measuring the current-voltage characteristics with an illumination of light, we have obtained value of Voc=0.38V, Jsc=$0.5mA/cm^{2}$. And a fill factor and efficiency are about 0.314 and 0.083%, respectively. A 500W xenon lamp(ORIEL) is used for a light source, and the light intensity illuminated into the device was about 10mW.