a-TN-LCD의 전기광학특성에 표면액정배향이 미치는 영향

황율연,이창훈,서대식,이보호 崇實大學校 生産技術硏究所 1996 論文集 Vol.26 No.2

The characteristics of the response time and the viewing angle on twisted nematic(TN)-liquid crystal display(LCD) and amorphous (a)-TN-LCD without rubbing were investigated. To measure the Tansmission-Voltage, response time, and viewing angle characteristics, we prepared three kinds of LC cells and then studied the surface liquid crystal alignment effect. It was found that the response time on a-TN-LCD was fast compared to the TN-LCD, and the weak anchoring strength was attributed to the fast response time on a-TN-LCD. Also, we obtained the wide viewing angle characteristics on-a-LCD. We suggest that the liquid crystal alignment effect on LCD device is very important for electro-optical characteristics.

충북지역 도시방재계획의 도시계획적 진단과 발전방향 : 도시계획서 분석 및 전문가 의견조사를 중심으로

백기영,황희연,박병호,이만형,황재훈,류을렬 永同大學校 1999 硏究論叢 Vol.5 No.1

본 연구는 도시방재계획의 현황을 도시계획적 차원에서 진단하고 그 발전방향을 도출하고자 하는 목적하에, 충청북도의 조례와 지침중 도시방재 관련 사항을 정리하며, 충청북도 지방도시계획위원회 회의록 및 관련자료를 검토하여 방계계획의 취급 수준을 파악하였다. 실제 도시계획 상황에 대한 진단은 도시계획 보고서를 대상으로 도시방재계획의 위상을 분석하고 평가하였다. 또한 도시방재계획의 위상과 관련 전문가의 인식수준을 평가하고 이를 바탕으로 향후 바람직한 도시방재계획의 위상을 설정하기 위해 필요한 사항을 분석하고자, 도시방재에 관한 일반의식 수준, 도시재해에 관한 대처방안, 도시방재계획의 평가방향 등을 중심으로 설문조사를 실시하였다. 이상과 같은 충북지역의 방재계획에 대한 도시계획적 진단을 바탕으로 도시방재계획 관리체계의 방향 도출과 도시방재계획의 향후방향 제안을 시도하였다. This paper examines the status quo of the existing urban disaster prevention plans in Chungbuk Province and suggests alternative orientations for the future application. Its methodological themes center around the systematic compilation and accountability of disaster-related ordinances, mostly hinged on evaluation of major disaster items documented in various urban master or revision plans. In addition, it recommends the concrete guidelines and contents in disaster prevention plans, both of which are based on the aggregated results of expert opinion survey in and around Chungbuk Province. In order to tackle with diverse and unpredictable disasters which are well observed in modern urban society, this paper urges that the relatively weak legal and planning standards of the existing disaster prevention plans have to be immediately revised. For instance, the paper vividly shows that the present dimension of disaster prevention plans within the existing master plans and perception of specialist are not satisfactory mainly because of the internal limitation of the existing plans. Secondly, it seems imperative for planners to pay attention to systematic operation and management, even starting from the early development stage of urban disasters. Lastly, it proposes the alternative checklists given to measure the suitability of the disaster plans.

기업의 관리능력, 직능간 통합, 기회인지활용능력, 혁신성과및 수출성과간의 관계* 황경연

황경연(Kyung-Yun Hwang):성을현(Eul-Hyun Sung),조대우(Dae-Woo Cho) 한국무역연구원 2017 무역연구 Vol.13 No.6

The aim of this study is to analyze the relationship between management capability, interfunctional integration, opportunity recognizing and capitalizing capability, innovation performance, and export performance of export venture firms. Such relationships are studied over a sample of 102 Korean export venture firms by using the partial least squares (PLS) analysis. The results obtained show that the degree of management capability positively influences inter-functional integration as well as opportunity recognizing and capitalizing capability. The study also finds evidence that inter-functional integration has a positive effect on opportunity recognizing and capitalizing capability. Further, the study finds that inter-functional integration and opportunity recognizing and capitalizing capability are critical determinants of innovation performance. In addition, opportunity recognizing and capitalizing capability positively affect innovation performance and these factors, in turn, have a positive effect on export performance. This study, however, finds that inter-functional integration has no significant effect on export performance and indirectly influences the latter through innovation performance. This paper provides several theoretical and practical implications for export venture firms in Korea.

Effects of a purifying paddy field on diminishing nutrient loads of effluent from paddy fields of ducks using rice culture

( Eul Soo Yun ),( Jae Saeng Lee ),( Hwang Won Kang ),( Ki Yeul Jung ),( Yeong Dae Choi ),( Edwin Ramos ) 한국토양비료학회 2008 한국토양비료학회 학술발표회 Vol.2008 No.1

Analytical Method for the Validation of Three Polyphenols as a Marker Compound for the Standardization of <i> Solidago virgaurea</i> subsp. <i> gigantea</i> Extracts and Antiadipogenesis of Harvesting Time and Location

Hwang, Seung Hwan,Kim, Ju Hee,Wang, Zhiqiang,Lee, Jae-Yong,Lim, Soon Sung Hindawi 2017 Journal of analytical methods in chemistry Vol.2017 No.-

<P>Protocatechuic acid (PC), chlorogenic acid (CA), and kaempferol-3-<I>O</I>-rutinoside (K-<I>O</I>-R), isolated from the<I> Solidago virgaurea</I> subsp.<I> gigantea</I> (SV) extract, were quickly and efficiently separated using HPLC. Our chromatographic method was found to effectively separate PC, CA, and K-<I>O</I>-R at retention times of 5.36, 8.22, and 17.04 min, respectively. Linearity of PC, CA, and K-<I>O</I>-R was found to be in the range of 4.85–485.00, 47.5–1900.00, and 8.50–850.00 <I>μ</I>g/ml. Recoveries ranged between 101.32 and 103.30%, 95.82 and 100.25%, and 96.18 and 99.37%, for PC, CA, and K-<I>O</I>-R, respectively. The antiadipogenesis activity of SV extracts collected from five different months and from seven different regions was evaluated using an Oil Red O staining assay in 3T3-L1 cells. Extract from SV collected in April from the Ulleung Island produced over 106.89% inhibition of adipogenesis without cytotoxicity at 50 <I>μ</I>g/ml. This extract had a high amount of PC and K-<I>O</I>-R. The developed HPLC method was found to be fast, accurate, precise, and reproducible and could be applied to qualitative and quantitative analysis of three bioactive compounds in SV extracts. The SV extract collected in April from Ulleung Island can be used as a functional food ingredient preventing obesity.</P>

국제경영 : 대덕연구개발특구내 정부출연연구기관에서 도입한 기술이 수출성과에 미치는 효과 분석: 기업의 흡수능력을 중심으로

( Kyung Yun Hwang ),( Eul Hyun Sung ) 국제지역학회 2014 국제지역연구 Vol.18 No.1

본 연구는 대덕연구개발특구내 정부출연연구기관에서 기술을 도입한 기업을 대상으로 도입기술의 기술적 속성, 기업의 흡수능력, 제품/공정 혁신, 수출성과 간의 관계를 분석하였다. 특히 본 연구에서는 기술적 속성이 제품/공정 혁신에 영향을 미치는 관계에서 기업의 흡수능력이 조절하는 효과를 분석하였다. 이러한 관계를 분석하기 위해 대덕 연구개발특구내 정부출연연구기관에서 기술을 이전 받은 기업을 대상으로 2014년 1월2일부터 약 2주간 설문조사를 통해 자료를 수집하였다. 본 연구는 PLS(Partial Least Square)분석 방법을 활용하여 수집된 자료를 토대로 연구모형을 검증하였다. 실증결과, 도입기술의 기술적 속성이 우수할수록 제품/공정 혁신에 긍정적인 영향을 미치는 것으로 나타났다. 또한 기업의 흡수능력이 높을수록 제품/공정 혁신에 긍정적인 영향을 미치는 것으로 나타났다. 그리고 도입기술의 기술적 속성이 제품/공정 혁신에 영향을 미치는 관계에서 기업의 흡수능력이 조절하는 효과가 존재하는 것으로 나타났다. 한편제품/공정 혁신은 기업의 수출성과에 긍정적인 영향을 미치는 것으로 나타났다. 본 연구는 기업의 흡수능력이 제품/공정 혁신에 독립적으로 긍정적인 영향을 미치기도 하지만 기술적 속성과 상호작용을 통해 제품/공정 혁신에 긍정적인 영향을 미치는 관계를 확인하였다는 점에서 의의가 있다. This study aims to investigate the question of how the technologies derived from Government-funded Research Institutes (GRI) in Daedeok Innopolis affect firms` export performances, especially focusing on attempting to find the role of firms` competence-technology absorption-to lead to their production/process innovations that play crucial role in enhancing their sustainable competitive advantage, using survey data. The survey was conducted for tow weeks, January 2-15, 2014. PLS is used to test the relationships. The commonality found in the results of the study is that high evaluation of technology introduced from GRI has a positive effect on firm`s product/process innovation, and that the innovation leads to increase in its export performance. The study also finds a solid evidence that firm`s technology absorption capacity moderates the relationship between the introduced technology and its product/process innovation, indicating that the technology absorption capacity used as moderating variable positively affects its product/process innovation. Some academic contributions and policy implications based on the results of this research are suggested.

구운동 폐광산 하류 논토양의 토심별 중금속함량

윤을수(Eul-Soo Yun),박성학(Sung-Hak Park),고지연(Jee-Yeon Ko),정기열(Ki-Yeol Jung),박기도(Ki-Do Park),황재복(Jae-Bok Hwang),박창영(Chang-Yeong Park) 한국토양비료학회 2010 한국토양비료학회지 Vol.43 No.5

토양오염 방지사업에 의해 복원이 완료된 지역인 밀양시 구운동광산의 오염원인 잔존 광미 퇴적지의 광미와 주변 농경지에 대한 오염형태를 조사하여 환경 복원의 기초자료를 얻고자 수행하게 되었다. 본 연구 대상지는 경남 밀양시 무안면 마흘리 구운동 광산 주변 수계 및 토양으로 조사지의 지질은 신라통 안산암질이며 광산의 광상은 함유 황광으로 주 채굴금속은 금, 은, 동, 납, 아연이었으며, 잔존 광미 퇴적지의 광미와 주변 농경지의 중금속을 분석하였다. 광구 직하류 휴경논 표토 (0-16 cm)의 화학성은 pH는 4.3-4.4내외, 치환성석회 및 고토함량은 각각 0.2 및 0.04 cmolc kg<SUP>-1</SUP> 인 반면 토심이 깊어질수록 높아졌다. 광구수 및 광미 적치장 유출수의 직접 영향은 받는 최상류 퇴적토양(SI)의 0.1N HCl 가용성 Cu, Cd, Pb, Cr 및 Ni의 함량은 각각 97, 0.6, 197, 0.28 및 0.12 mg kg<SUP>-1</SUP>이었고, 최하류 논 (SIII)의 경우 Cu 25, Cd 2.8, Pb 16.7,Cr 0.17 및 Ni 0.44 mg kg<SUP>-1</SUP>이었다. 휴경지 논 토양 토심별 중금속 함량은 Cr, Pb, Cu는 토심 16 cm 상부에서, Cd, Ni는 토심 16-60 cm 부위에서 높은 분포특성을 보였다. This study was conducted to investigate form of pollution brought by residual of mine tailing in agricultural land, and get basic information need for environment restoration. Guundong mine was completely restored region by implementation the soil pollution prevention plan. The districts is soils in Guundong mine vicinity the Mahul-ri, Muan-myeon, Miryang city, Gyeongsangnam-do. The nature of soil studied is the Shinra series andesite and mineral deposits which contain brimstone and heavy metals such as gold, silver, copper, lead, and zinc. The residual mine tailing and around agricultural land of heavy metals analyzed with 0.1N HCI solubility. The chemical properties of surface soil in upper part around mining area were pH 4.3-4.4, organic matter 19-21 g kg<SUP>-1</SUP>, available P2O5 85 mg kg<SUP>-1</SUP>, exchangeable Ca 0.21-0.25 cmolc kg<SUP>-1</SUP>, exchangeable Mg 0.04 cmolc kg<SUP>-1</SUP>. The pH, exchangeable Ca, and Mg were increased with soil depth. The contents of 0.1N HCl extractable Cu, Cd, Pb, Cr, and Ni in soil (siteI) which influenced by outflow water from mine tailing were 97, 0.6, 197, 0.28 및 0.12 mg kg<SUP>-1</SUP>, respectively. The vertical distribution of heavy metals in soil varied considerably among the metals kind. In case of siteI, The content of Cu, Pb, and Cr in soil was highest at surface soil. However, the content of Cd, Zn, Ni, and Mn was high at middle part of soil profile.

농약의 환경 유출 평가모델 종류별 특성에 대한 고찰

황재복(Hwang Jae-Bok),Watanabe Hirozumi,이용환(Lee Yong-Hwan),윤을수(Yun Eul-Soo),최영대(Choi Young-Dae),박성태(Park Sung-Tae) 한국잡초학회 2009 한국잡초학회 별책(학술대회 초록집) Vol.29 No.1

시설딸기 후작 잡곡의 생육특성 및 토양화학성 변화

윤을수 ( Eul Soo Yun ),정기열 ( Ku Yuol Jung ),박창영 ( Chang Young Park ),조희정 ( Hee Jeong Jo ),황재복 ( Jae Bocg Hwang ),최영대 ( Young Dae Choi ),남민희 ( Min Hee Nam ) 한국토양비료학회 2011 한국토양비료학회 학술발표회 Vol.2011 No.1

하우스재배 수수의 예취시기별 그루터기 재생 및 양분흡수 특성

윤을수 ( Eul Soo Yun ),정기열 ( Ki Yuol Jung ),박창영 ( Chang Young Park ),황재복 ( Jae Bocg Hwang ),최영대 ( Young Dae Choi ),남민희 ( Min Hee Nam ) 한국토양비료학회 2011 한국토양비료학회 학술발표회 Vol.2011 No.-