진공증착법으로 제조된 PVDF 유기박막의 초음파 응답 특성에 관한 연구

박수홍,Park, Soo-Hong 한국진공학회 2009 Applied Science and Convergence Technology Vol.18 No.3

본 논문의 목적은 진공증착법을 이용한 $\beta$-PVDF($\beta$-Polyvinylidene fluoride) 유기 박막의 제조와 제조된 유기 박막의 초음파 응답 특성을 연구하는데 있다. 진공 증착은 증발원 온도 $270^{\circ}C$, 인가 전계 142.4kV/cm, 진공도 $2.0{\times}10^{-5}Torr$에서 실시하였다. 기판온도의 증가에 따라서 결정화도는 47%에서 67.8%로 증가함을 알 수 있었다. 초음파 응답특성에서 거리를 1cm에서 100cm로 변화시켰을 경우, 출력전압은 0.615V에서 0.4V로 감소하였다. The purpose of this paper is to discuss the fabrication of $\beta$-PVDF($\beta$-Polyvinylidene fluoride, $\beta$-PVF2) organic thin films through the vapor deposition method and to investigate the ultrasonic response properties of the organic thin films produced. Vapor deposition was performed under the following conditions : the temperature of evaporator, the applied electric field and the pressure of reaction chamber were $270^{\circ}C$, 142.4 kV/cm and $2.0{\times}10^{-5}\;Torr$, respectively. The results showed that the degree of crystallinity increased from 47% to 67.8% with an increase in the substrate temperature. In the case of a sensor response characteristic by varying the distance from 1cm to 100cm, the output voltage decreased from 0.615V to 0.4V.

통신위성에 작용하는 섭동력의 영향평가와 궤도결정

박수홍,Park, Soo-Hong 한국정밀공학회 1992 한국정밀공학회지 Vol. No.

This study concerns about the orbit prediction and orbit determination of Korean future communication satellite, called 'Moogunghwa", which will be motioned in the geo-stationary orbit. Perturbation effect on the satellite orbit due to nonspherical gravitation of the earth, gravitation of the sun and moon, radiation of sun, drag of the atmosphere was investigated. Cowell's method is used for orbit prediction. Orbit determination was performed by using Extended Kalman Filter which is suitable for real-time orbit determination. The result shows that the chacteristics of the satellite orbit has east-west and south-north drift. So the periodic control time and control value in the view of the periodic of error can be provided. The orbit determination demonstrated the effectiveness since the convergence performance on the positon and velocity error, and state error standard deviation is reasonable.able.

진공증착법으로 제조된 PVDF 유기박막의 압전 센서 응답 특성에 관한 연구

박수홍,Park, Soo-Hong 한국진공학회 2008 Applied Science and Convergence Technology Vol.17 No.5

본 논문의 목적은 진공증착법을 이용한 $\beta$-PVDF($\beta$-Polyvinylidene fluoride) 유기 박막의 제조와 제조된 유기 박막의 압전 특성을 연구하는데 있다. 진공 증착은 증발원 온도 $270^{\circ}C$, 인가 전계 142.4kV/cm, 진공도 $2.0{\times}10^{-5}Torr$에서 실시하였다. 기판 온도의 증가에 따라서 $\beta$형태의 PVDF 함유량은 72%에서 95.5%로 증가함을 알 수 있었다. 힘 모우멘트를 $1.372{\times}10^{-5}N{\cdot}m$에서 $39.2{\times}10^{-5}N{\cdot}m$로 변화시킨 응답특성의 경우, 출력전압은 1.39V에서 7.04V로 증가하였다. The purpose of this paper is to discuss the fabrication of $\beta$-PVDF($\beta$-Polyvinylidene fluoride, ${\beta}-PVF_2$) organic thin films through the vapor deposition method and to investigate the piezoelectric properties of the organic thin films produced. Vapor deposition was performed under the following conditions : the temperature of evaporator, the applied electric field and the pressure of reaction chamber were $270^{\circ}C$, 142.4 kV/cm and $2.0{\times}10^{-5}Torr$, respectively. The results showed that the amount of $\beta$-form PVDF increased from 72 % to 95.5 % with an increase in the substrate temperature. In the case of a sensor response characteristic by varying the force moment from $1.372{\times}10^{-5}N{\cdot}m$ to $39.2{\times}10^{-5}N{\cdot}m$, the output voltage increased from 1.39V to 7.04V.

가맹본부의 경영지원이 가맹점의 경영성과와 관계결속에 미치는 영향

박수홍(Soo-Hong Park) 조선대학교 지식경영연구원 2021 기업과 혁신연구 Vol.44 No.2

무궁화위성의 궤도결정

박수홍(Park Soo Hong),조겸래(Cho Kyeum Rae) 제어로봇시스템학회 1992 제어로봇시스템학회 국내학술대회 논문집 Vol.1 No.1

국악관악기 품질평가를 위한 음고특성분석

박수홍(Soo-Hong Park),옥승호(Seung-Ho Ock),서인화(In-Hwa Seo),김소리(So-Ri Kim),정환희(Hwan-Hee Jeong) 한국소음진동공학회 2011 한국소음진동공학회 학술대회논문집 Vol.2011 No.4

In this study, peak frequencies of korean traditional wind instruments according to instruments were measured for introducing quality certification system. Also major dimensions of instruments were measured too, for analysis on manufacturing precesion.

의류 유통경로별 판매지수에 대한 시계열 분석

박수홍 ( Soo Hong Park ),선일석 ( Il Seok Sun ) 한국유통경영학회(구 한국유통정보학회) 2016 유통정보학회지 Vol.19 No.3

Purpose: With the environmental changes in clothing distribution, the domestic clothing distribution path has changed dramatically. To respond to it, an in-depth study is required to conduct the clothing distribution paths. Therefore, this study attempts to draw suggestions on overall clothing distribution paths by employing the time-series predictive analysis. Research design, data, and methodology: The main purpose of this study was to analyze and predict the relations of distribution paths by categorizing four clothing distribution paths, such as a department store, a large mart, a retail shop, and a non-store retailing. In order to examine the predictive analysis, the ARIMA model was used. In addition, the VAR model of Granger Causality Test was employed to investigate the causal relations regarding distribution paths. Results: After confirming the data stabilty by the ADF, each distribution path model was established by the Autocorrelation Coefficient and the Partial Autocorrelation Coefficient. The study results predicted the ARIMA model such as a department store ARIMA(1,0,0)(0,1,0)12, a large mart ARIMA(0,1,1)(0,1,0)12, a retail shop ARIMA(0,1,2)(0,1,0)12, and a non-store retailing ARIMA(1,1,0) (1,1,0)12, respectively. Conclusions: In conclusion, according to the predictive analysis, the overall sale index of four clothing distribution paths were influenced by the seasons. More specific, this study results indicated that a large mart and a non-store retailing increased the overall sale index; however, a retail shop showed a decreased sale index. Additionally, the total sale index of the department store was consistent, but fluctuated by the seasons. Additionally, the study results provided that most distribution paths were influenced by the seasons and impacted the total sale index each other, except a department store and a retail shop.

판토그라프 구조설계를 위한 기구해석 기법 개발

박수홍(Park Soo-Hong),김휘준(Kim Hwi-Jun),정경렬(Chung Kyung-Ryul),배정찬(Bae Jung-Chan) 한국철도학회 1999 한국철도학회 학술발표대회논문집 Vol.- No.-

Pantograph, which collects current from cartenary system, is one of important parts of high-speed train. Kinematic analysis is basic component of pantograph design. But kinematic analysis is very complex and time-consuming. Therefore numerical calculation of pantograph kinematics is necessary. In this study, pantograph kinematic analysis software was developed and relationship between kinematic parameters and pantograph performance was investigated. The software and relationship between kinematic parameters and pantograph performance are helpful to pantograph designers.

유통경로 상 갈등과 관계만족이 충성과 태만에 미치는 영향: 화장품 산업을 중심으로

박수홍 ( Park Soo-hong ),선일석 ( Sun Ll-seock ) 한국유통경영학회(구 한국유통정보학회) 2017 유통경영학회지 Vol.20 No.3

국내 화장품 산업은 수입브랜드의 국내진출, 중저가 화장품의 소비자 인식변화 등으로 인하여 시장구조의 변화가 시작되었으며, 백화점, 방문판매, 온라인쇼핑몰, 브랜드숍, 할인점 등 다른 산업에 비해 판매채널이 매우 다양한 특징을 가지고 있기 때문에 유통경로 측면에서의 화장품 산업에 대한 연구가 필요한 실정이다. 이에 본 연구에서는 화장품 유통경로에 관한 연구를 수행하였으며, 박수홍(2015) 외의 연구의 후속연구로서 유통경로 구성원의 관계만족과 갈등이 충성과 태만에 미치는 영향과 더불어 발언이라는 매개변수를 활용하여 직ㆍ간접적인 영향력을 분석하였다. 연구결과 상호간의 만족은 발언 및 충성에 정(+)의 영향을 미쳤으나 갈등은 통계적으로 유의미한 영향력을 보이지 않았다. 이러한 연구결과는 유사 연구에서 제시한 결과와는 다른 차이점으로 화장품 유통경로 상 힘의 영향력에 따른 결과로 유추할 수 있었다. 향후 연구에서는 본 연구 결과를 기반으로 화장품 유통경로에서의 긍정적인 상생 전략을 도모하는 연구가 수행되기를 기대한다. This With regard to cosmetics industry in Korea, a change in market structure began due to entry of imported brands into Korea, a change in consumer recognition of mid- and low-priced cosmetics, and the like. And compared with other industries, the cosmetics industry has characteristics of very diverse sales channels such as department store, door-to-door sales, online shopping mall, brand shop and discount store. Accordingly, the actual condition is that there is necessity for study on cosmetics industry from the distribution channel aspect. Hence, a study on cosmetics distribution channel was made in this study. And direct·indirect effect was analyzed by utilizing a parameter called voice in addition to effect that distribution channel members` relationship satisfaction and conflict had on loyalty and neglect in the follow-up study regarding the studies made by Soohong Park et al. (2015). According to the results of study, satisfaction had a positive (+) effect on voice and loyalty. However, conflict didn`t show statistically significant effect. These results of study were difference from results presented in similar study, and it was possible to infer that these results were produced according to the effect of power in cosmetics distribution channel. It is to be hoped that a study to seek positive win-win strategy in cosmetics distribution channel will be made in the further study, based on the results of this study.

공간다기준의사결정을 이용한 공시지가 비교표준지 자동선정

박수홍(Park soo hong),홍성언(Hong sung eon),김현석(Kim hyun suk),김정엽(Kim jung yeop) 대한공간정보학회 2003 한국지형공간정보학회 학술대회 Vol.2003 No.4