CAN/CAM 기술의 현상

정정화,Jeong, Jeong-Hwa 한국전자정보통신산업진흥회 1986 電子振興 Vol.6 No.3

양자점 레이저 다이오드의 식각 깊이에 따른 접합온도 측정

정정화,한일기,이정일,Jeong, Jung-Hwa,Han, Il-Ki,Lee, Jung-Il 한국진공학회 2008 Applied Science and Convergence Technology Vol.17 No.6

순방향 전압-온도 (forward voltage-temperature)법을 이용하여 양자점 레이저 다이오드의 접합온도를 측정하였다. 식각 깊이가 깊은 mesa 구조의 경우 입력전류에 대한 접합온도의 증가율은 0.05 K/mA인 반면, 식각 깊이가 낮은 mesa 구조의 경우 0.07 K/mA로서 상대적으로 높게 측정되었다. 깊은 mesa 구조에서의 상대적으로 낮은 접합온도 증가율은 mesa 측면 방향으로의 열확산 효과 때문인 것으로 설명된다. Junction temperature of quantum dot laser diodes is investigated by utilizing forward voltage-temperature method. In the case of ridge type laser diodes with deep mesa the increasing rate of junction temperature to current is about 0.05 K/mA, while in the case of shallow mesa the increasing rate is about 0.07 K/mA. It is explained that the relatively low increasing rate in the deep mesa results from the heat expansion to the lateral direction of mesa.

홍색 비황 광합성 세균 Rhodopseudomonas sp. KH4의 Extracellular polysaccharide의 중금속 흡착

정정화,서필수,공성호,이종렬,이상섭,Jeong, Jeong-Hwa,Seo, Pil-Soo,Kong, Sung-Ho,Lee, Jong-Yeol,Lee, Sang-Seob 한국미생물학회 2006 미생물학회지 Vol.42 No.4

본 연구에서는 경기도 안양에 있는 하천에서 분리한 홍색 비황 광합성 세균Rhodopseudomonas sp. KH4에서 생성된 extracellular polysaccharide (EPS)의 중금속 흡착특성에 대해 연구하였다. 100 mg/L의 Cd과 Cu의 최적 흡착조건(온도$40^{\circ}C$ Cd; pH 8, Cu; pH 5)에서 1.0 g/L의 EPS를 첨가하였을 때, Cd의 경우 30분 동안 842 mg/L, Cu의 경우 10분 동안 70.0 mg/L가 흡착되었다. 또한 Cd과 Cu가 각각 100 mg/L씩 공존되어 있는 경우, pH 5, $25^{\circ}C$에서 EPS 1.0 g/L 첨가하였을 때 Cd과 Cu가 각각 16.8 mg/L, 48.7 mg/L가 흡착되었다. 또한 Langmuir 등은 흡착식으로 부터 EPS 1.0 g/L, pH 5, $25^{\circ}C$에서 Cd과 Cu의 흡착량은 각각 76.9 mg/L, 67.1 mg/L로 실제 경험치와 큰 차이를 보이지 않았다. 에탄올 침전법으로 정제된 KH4 strain으로부터 생성된 EPS는 gas-liquid chromatography (GLC) 분석에 의한 중성당 분석 결과, arabinose, glucose, mannose가 각각 2.4%, 7.1%, 90.5%로 mannose가 대부분을 구성하였다. In the present study, we examined biosorption characteristics of heavy metals onto the extracellular polysaccharide (EPS) produced by the purple nonsulfur photosynthetic bacteria Rhodopseudomonas sp. KH4, which was isolated from a stream in Anyang, Kyonggi-Do. When Cd (100 mg/L) and Cu (100 mg/L) were added to EPS (1.0 g/L) in the optimal condition (Cd; pH 8, Cu; pH 5, $40^{\circ}C$), 84.2 mg/L of Cd and 70.0 mg/L of Cu were adsorbed within 30 min and 10 min, respectively. When 100 mg/L of Cd and Cu were present as mixture, 16.8 mg/L of Cd and 48.7 mg/L of Cu were adsorbed at $25^{\circ}C$, pH 5. The maximum adsorption capacity determined by fitting Langmuir isotherms model was suitable for describing the biosorption of Cd (76.9 mg/g) and Cu (67.1 mg/g) by EPS. The neutral monosaccharide in the EPS determined by GC consisted of arabinose (2.4%), glucose (7.1%) and mannose (90.5%).

Place and Routing

정정화,Jeong, Jeong-Hwa 대한전자공학회 1989 전자공학회지 Vol.16 No.1

박근혜정부의 지방분권정책 평가와 과제

정정화 ( Jeong Jeong-hwa ) 한국자치행정학회 2017 한국자치행정학보 Vol.31 No.3

본 연구는 박근혜정부가 추진한 지방분권정책을 ①정책목표와 추진과제의 적합성, ②정책결정자의 의지, ③추진기구의 효율성, ④추진과정의 민주성과 추진전략의 적절성, ⑤정책관련 집단의 요구와 지지, ⑥추진성과 등 여섯 가지 평가요소에 따라 분석하였다. 역대정부와 비교·평가한 결과, 박근혜정부의 지방분권정책 추진체계는 정책목표·추진과제·추진과정·추진전략·추진기구 등 전반적으로 체계성과 효율성이 높은 것으로 평가되었다. 그러나 최고정책결정권자인 대통령의 의지와 추진성과는 낮은 것으로 분석되었다. 이같은 평가결과를 토대로 도출한 문재인정부의 지방분권정책 추진방향과 과제를 제시하면 다음과 같다. 첫째, 지방분권에 대한 중앙부처와 정치권 등의 저항과 반발을 극복하기 위해서는 지방분권을 담보할 수 있는 개헌이 선결과제이다. 둘째, 임기 중에 달성할 수 있는 과제를 선별해 집중하는 전략이 필요하다. 셋째, 지방정부의 재정자율성과 책임성을 증대하기 위해서는 자주세원 중심의 재정분권을 강화해야 한다. 넷째, 진정한 지방분권을 달성하기 위해서는 직접민주주의 요소를 담은 주민들의 참여통로가 확대되어야 한다. This study analyzed the Park Geun-Hye Administration's Decentralization Policy by 6 evaluation factors such as policy goals, policy decision-maker's will, promoting organizations, accomplishment procedures and strategies, policy-related groups' demand and support, and progress results. As the result of the evaluation, the Park Geun-Hye Administration's Decentralization Policy resulted in a very high standard of the reasonability of policy goals, policy-related groups' demand and support, the efficiency of promoting organizations, and the appropriateness of accomplishment procedure and strategy compared with other governments. However, president Park Geun-Hye had a very low will of pushing forward with the plan and the outcomes were evaluated as the lowest of all the governments. The following suggestions are made on the basis of the results of such evaluation. Firstly, for the new government to push ahead with decentralization policy successfully, local governments and decentralization-related organizations need to focus on their ability for realization of presidential campaign about decentralization policy. Secondly, it needs to select the tasks for the local residents to be able to recognize the effects of decentralization policy and adopt strategies for emphasizing those tasks. Lastly, revising the current Constitution is an essential prerequisite to reinforce decentralization fundamentally.

오피스의 에너지 절감을 위한 공조시스템안 및 제어영역의 도출

정정화(Jeong, Jeong-Hwa),강기남(Kang, Ki-Nam),송두삼(Song, Doo-Sam) 대한건축학회 2010 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.30 No.1(계획계)

尖端產業團地 誘致를 위한 地方政府 活動의 效果分析

鄭貞和(Jeong Jeong-Hwa) 한국지방자치학회 2000 韓國地方自治學會報 Vol.12 No.4

This study attempts to find out the effectiveness of the local governments I attraction efforts for deciding the location of high-tech industrial parks. To achieve the purpose of this study, a research was conducted of the Media-valley and Techno-park by qualitative analysis method. The location determinants are economic-spatial (conditions of location), political (election, political party), attraction effort -related (spporting policies, local governor's efforts), and environmental variables(location decision structure, the object of national land development plan). This study was able to find out the correlation between local governments' attraction efforts and location decision for high-tech industrial parks. In this study, local governments' attraction efforts had a great effect on location decision. The variables of local governments' attraction efforts(especially spporting policies) were more influential in the Media-valley rather than Techno-park in which the location decision structure was different from each other. This proves that attraction efforts are affected by environmental variables(especially location decision structure). In this study, we suggest that the central government should delegate more power to local governments so that they can work out their own proper policies for attracting various facilities. This is because the successful establishment of high-tech industrial parks very much depends on the localities' progressive will.

중소규모 오피스 건물의 열적쾌적감과 에너지 절감을 도모하는 공조 시스템 및 제어방안

정정화(Jeong-Hwa Jeong),이영재(Young-Jae Lee),송두삼(DooSam Song) 대한설비공학회 2010 대한설비공학회 학술발표대회논문집 Vol.2010 No.6

In these days, green building movement is prevailing in the world, but existing HVAC control system, for example VAV or CAV, have problems about a low energy efficient and that can't satisfy residential comfortable. This is particularly responsible for the inadequate HVAC control strategies and system performance. In this study, as an innovative indoor air-conditioning method, the multi-system air-conditioning system will be proposed. Through field measurement, the indoor thermal comfort of the proposed system was reviewed and the control logic to maximize the proposed system performance in terms of energy efficient will be suggested.

개발과 보전을 둘러싼 부처간 정책갈등 : 환경부의 대응전략 및 영향요인 탐색

정정화 ( Jeong Hwa Jeong ) 한국정책연구원 2002 한국정책논집 Vol.2 No.-

개발부처와 보전부처간 정책갈등을 영월댐 건설과 새만금 간척사업을 사례로 선정하여 보전부처인 환경부의 대응전략 및 전략 선택에 미친 영향요인을 탐색한다. 개발부처와의 정책갈등 상황에서 환경부가 선택한 대응전략에 미친 영향요인으로 조직외부요인(정치적 지지)과 조직내부요인(조직위상, 전문성, 리더십), 상황적 요인(선거)을 선정하여 사례를 분석한 결과 환경부가 영월댐 사례에서는 환경 영향평가라는 계도적 장치와 전문성을 바탕으로 건설교통부의 댐건설정책에 맞서 강도 높은 경쟁전략을 사용하였으나, 새만금 사례에서는 담수호 수질예측결과 농업용수로 사용할 수 없다는 판단을 내리고도 사업추진 여부에 대해서는 입장을 밝히지 않은 채 농림부의 경쟁전략에 소극적으로 대응하는 타협전략으로 선회하였다. 이같은 대응전략 변화에는 조직외부요인인 정치적 지지의 차이에서 일차적으로 기인한 것으로 나타났다. 전자에서는 환경부가 환경단체와 지역주민, 언론, 대통령, 의회ㆍ정당으로부터의 강한 지지를 획득한 반면 후자에서는 외부정치세력의 지지를 얻지 못하였다. 조직내부요인 가운데 환경부 장관은 전자에서는 적극적인 리더십을 발휘해 환경단체와의 정책연대가 형성되었지만, 후자에서는 소극적인 리더십이 확인되었다. 그러나 새만금 사례의 경우 환경부의 대응전략과 개발부처의 추진전략 선택에는 해당사업이 부처내에서 차지하는 비중과 정치적 의미, 매몰비용<sunk cost), 조직의 이해관계 등이 강하게 작용한 것으로 밝혀져 개발ㆍ보전부처간 정책갈등 양상과 대응전략 선택의 정치적 맥락을 분석하기 위해서는 행정부내의 의사결정과정을 설명하는 다른 모형의 적용 필요성이 제기되었다. The policy conflict over development and preservation issues among ministries in the central government has been one of the main policy agenda that raises serious troubles in the policy coordination and consensus-building. The purpose of this study is to examine the respective strategies choiced by the Ministry of Environment(MOE) and then search for determinants which have affected strategic calculation of MOE, when faced with environmental issues. This study focuses on two environmental conflict cases, that is, Yongwol Dam and Saemangum Reclamation Project. This study postulates three factors affected MOE's strategic choice that is external variable(political support), internal variable(organizational position within government, bureaucratic expertise, readership) and contingent variable(election). Through a case study of policy-making process surrounding Yongwol Dam Project, MOE used competing strategy in opposition to the Ministry of Construction & Transportation but in the case of Saemangum Reclamation Project acted passively and used compromising strategy against the Ministry of Agriculture & Forestry. The change of strategy between two cases is primary caused by the difference of political support. In the case of Yongwol Dam Project MOE not only received strong support from NGOs, local residents, public opinion, and president but also established policy solidarity with NGOs. But in the case of Saemangum Reclamation Project MOE has not gained external-political support. Moreover, the former has been observed active readership, but on the other hand the latter passive. This paper has some limitations to explain strategic choice of MOE and developmental government, so suggests that another model explaining intra-governmental policy-making process is necessary to apply on this study.

정부와 NGO의 관계 비교연구

정정화(Jeong-hwa Jeong) 서울행정학회 2006 한국사회와 행정연구 Vol.17 No.1

This paper analyses the relation between government and environmental NGOs in America, Japan, and Korea. In many countries, the types of the government-NGO relationship depend on various factors such as the characteristics of political system, historical and social atmosphere, and nature of the problems in hand. This paper probes two major factors that can condition the government-NGO relationship, which are organizational characteristics of NGOs and political opportunity structure which means a relative openness of political system and configuration of political power among the relevant actors participating in policy-making process. The comparative analysis shows that the political opportunity structure has much affected the model of the government-NGO relationship, while organizational characteristics of NGOs played an insignificant role. As a result, the interdependence model of government-NGO relationship is found under the circumstances where the openness of political system is enlarged and the configuration of political power is favorable to NGO.