논문 / 유해배기가스 저감을 위한 Hole 형 노즐의 미립화 특성실험

정진도(Chung Jin Do),유병구(Yu Byoung Gu) 한국액체미립화학회 1997 한국액체미립화학회지 Vol.2 No.3

외다이아프램을 사용한 현장용접형 각형강관ㆍH형강보 접합부의 탄소성거동에 관한 연구

정진안(Chung Jin-An),한석종(Han Seok-Jong),양일승(Yang Il-Seung) 대한건축학회 2010 大韓建築學會論文集 : 構造系 Vol.26 No.8

This study focuses on the development of a new method of H-shaped beam-to-square column connection with outer diaphragm with field welding. The specific type of beam-to column connection with external stiffener using field welding is proposed. The structural behavior of this connection is examined experimentally. The two loading type tests are conducted under the experimental parameters given as details. First are described symmetrical loading test that supported the both ends or a beam simply and applied load from the column top end for investigating a fundamental characteristic of this connection. Further are given the anti- symmetrical loading test that carries out simple support of the column top end and the column base, and applied load from the both ends of a beam for investigating structural performance of this connection. From the results, it makes clear that the external stiffener type connection proposed in this paper is reliable connection method.

TRIZ를 이용한 키인터록 시스템 개발

정진상(Jin sang Chung) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11

The “Key Interlock System” is applied as a regulation of North America (F/CMVSS 114) which has caused troubles, big operation noise, excessive heating of solenoid The TRIZ is a romanized acronym for Russian: (Teoriya Resheniya Izobretatelskikh Zadatch) meaning “The theory of inventive problem solving.” It is innovative and logical problem solving methodology. This paper will introduce analysis of the problem, solving the problem using TRIZ method and the test results

일본 건축용강재 인증제도 소개 및 사례

정진안(Jin-An Chung),정미영(Mi-Young Jung),이호준(Ho-Jun Lee) 한국강구조학회 2021 韓國鋼構造學會誌 Vol.33 No.6

1960년대 이후 농업 경영을 현대화하기 위한 실험들 : 협업농장을 중심으로

정진아(Chung, Jin A) 건국대학교 인문학연구원 2021 통일인문학 Vol.87 No.-

농지개혁이 단행되었음에도 불구하고 1950년대 내내 한국의 농업 경영은 악화되었고, 농어촌 고리채가 누적되었다. 근본적인 원인은 영세소농 구조를 극복하지 못했기 때문이었다. 농림부 산하의 농업구조정책심의회는 협업 경영을 대안으로 제시했다. 이에 관과 민간의 협업농장 실험이 전개되었다. 농림부는 1963년 경기, 전남, 전북, 경남, 경북 등 5개 지구에 시범 협업개척농장을 설치했다. 1960년대 중반부터 충청북도와 경상북도, 전라북도는 도정 차원에서 특성화 협업농장을 설립했고, 농협은 산하조직으로 작목반을 설치했다. 의욕적인 협업농장 설립에도 불구하고 작목반을 제외한 관 주도의 협업농장은 오래지 않아 소강상태에 빠졌다. 권위주의적이고 일방적인 간섭과 통제가 낳은 결과였다. 관 주도의 협업농장 실험이 추진되고 있을 때 한편에서는 민간협업농장이 하나 둘 생겨나고 있었다. 특히 증평협업농장은 민간협업농장으로서 현재까지 50년 이상 유지되고 있다. 그 비결은 다음과 같다. 첫째, 위기와 시행착오 속에서 농민들 자신의 협업모델을 만들어갔다. 둘째, 농장원들이 정관과 규율에 합의하면서 농장을 조기에 안착시켰다. 셋째, 민주적인 의사결정 구조와 연찬을 통해 공동체성을 확보했다. 넷째, 개별경영을 배제하고 농장으로 역량을 집중함으로써 협업경영의 이점을 확보했다. 다섯째, 교육과 의료 복지시스템이 확보됨으로써 농장생활에 대한 만족도가 높아졌다. 여섯째, 이 모든 것의 결과로서 생산성이 제고되었고 수익성을 갖춘 경쟁력 있는 협업농장이 되었다. 1960년대 이후 농업경영을 현대화하기 위한 관 주도, 혹은 민간협업농장의 실험들은 한국 협업농업 역사의 중요한 자산으로서, 이를 반추하는 과정에서 우리는 한국 협업농업이 나아갈 길을 찾을 수 있을 것이다. Despite the implementation of land reforms, agricultural management in Korea deteriorated throughout the 1950s, and high usurious loans were accumulated in rural areas. The root cause was that the small peasant structure could not be developed. The Agricultural Structure Policy Council, under the Ministry of Agriculture and Forestry, suggested cooperative farming as an alternative. Accordingly, a cooperative farm experiment between the government and the private sector was developed. In 1963, the Ministry of Agriculture and Forestry installed Pilot Cultivation Farms in five districts, Gyeonggi, Jeonnam, Jeonbuk, Gyeongnam, and Gyeongbuk provinces, and since the mid-1960s, Chungcheongbuk-do, Gyeongsangbuk-do, and Jeollabuk-do have established specialized cooperative farms at the policy level of the province, and the NongHyup installed the Jakmokban as an affiliated organization. Despite the ambitious establishment of the cooperative farm, the government-led cooperative farm fell into a lull before long. This was the result of the authoritarian and unilateral interference and control. While government-led cooperative farm experiments were sluggish, private cooperative farm experiments were conducted throughout the country. In particular, the secret that the Jeungpyeong Cooperative Farm was able to maintain as the best private cooperative farm for more than 50 years is as follows. First, in the midst of crisis and trial and error, farmers created their own cooperative farming model. Second, the community was secured through a democratic decision-making structure. Third, the cooperative farm members settled their farms by agreeing with the articles of incorporation and discipline. Fourth, the advantage of cooperative farming was secured by excluding individual farming and concentrating capabilities on farms. Fifth, satisfaction with farm life was increased by securing education and medical welfare systems. Sixth, as a result of the above, productivity improved, and it became a competitive cooperative farm with profitability. Since the 1960s, cooperative farm experiments to modernize agricultural management have been an important asset in the history of cooperative farming in Korea, and in the process of looking back, we will be able to find a way forward for Korea"s cooperative farming in the future.

전후 이승만 정권의 기간산업 육성론

정진아 ( Chung Jin A ) 역사문제연구소 2009 역사문제연구 Vol.13 No.2

After the Korean war, the Syngman Rhee government intended to foster a basis that would sustain a free economy and then establish a system to accept foreign aid, and also to nurture both light & key basic industries at the same time, for a speedy capitalist development of the economy. In order to do so, the Syngman Rhee government heeded to the U.S. suggestion, and established a legal basis for a free economy by making amendments to the economic section of the Constitution, while also dissolving the government`s running of industries to facilitate private managements of the industry. The government also boosted key basic industries that manufactured fertilizers, plate glass, cement and steel. Yet promotion of key basic industries could have caused some controversies for expanding national running of the industry, so regulations that would dictate the transfer of those industries` control to the private sector had to be put in place. It was to let the government abide by the principle of the industries` free operation, a concept that was already agreed upon by both Korea and the U.S. And such move was also taken to make it possible for the Korean government to accept U.S. demands regarding free economy and at the same time enable rapid development of the economy, while also remedying Korean economy`s problems, such as imbalance in the industrial structure, insufficient capital, and the underdeveloped nature of the capitalists. The post-war efforts of the Syngman Rhee government for nurturing key basic industries displayed a layer of meanings. First, it shows us the Rhee government`s perception of the task of developing the heavy chemical industry. Rhee government considered heavy chemical industry as a key industrial area that would ensure the long-term prosperity of the entire industry, and an area which could proceed without interruption even after the foreign aid was ceased. So Rhee government wished that the development of key basic industries which had huge interactive potentials would lead to a full scale development in the heavy chemical industry. Second, Rhee government`s efforts show us that such efforts also included a fostering program for major capitalists directly aided and funded by the government. Rhee government planned to first develop key basic industries with funding from the Korean Industrial bank, and then transfer the operation of such industries to the private sector. The key basic industries were usually huge, and played a vital and instrumental role in the development of the economy and industries in general, so any private company chosen to oversee such industry would become a major capitalist in an instant. Third, Rhee government`s efforts show us the historical flow of the entire industrialization process, which was led by the State and later culminated in the Economic development plans of the Park Chung Hee government. The Koreans allowed the state to intervene in the economic operations of the country in order to break free from the colonial industry structure that had been established during the occupation period, and also in order to make possible a rapid capitalist development, after the Korean war. The State-led industrialization policies resulted in hatching the Industry Recovery plan, and construction of key basic industries.

승용차용 터보과급기의 저속 영역 마찰 손실 측정 장치 개발

정진은(Jin Eun Chung),이상운(Sang Woon Lee),전세훈(Se Hun Jeon) 한국산학기술학회 2017 한국산학기술학회논문지 Vol.18 No.1

본 연구에서는 터보과급기의 성능을 저해하는 주요 인자 중 하나인 마찰손실에 대한 연구를 수행하였다. 실제 엔진에서 빈번하게 사용되는 저속 구간에서의 승용차용 터보과급기의 마찰손실 측정 장치를 개발하고, 30,000~ 90,000rpm의 저속영역에서 작동하는 터보과급기의 마찰손실을 측정하였다. 플로팅 베어링 타입의 승용차용 터보과급기를 실험 대상으로 선정하였으며, 마찰손실 측정 장치는 구동 모터, 오일 공급 시스템, 커플링으로 구성되었다. 실제 차량의 저속 운전 상황을 모사할수 있도록 설계, 제작되었고, 회전속도, 오일 온도 및 압력을 실험 변수로 선정하였다. 또한, 마찰손실 측정 장치는 로드셀을 사용하여 발생하는 마찰 토크를 직접 측정하여 마찰손실을 산출하였으며, 마그네틱 커플링을 통해 구동 모터의 동력을 터보과급기 축에 전달하고, 오일 공급 시스템을 오일 온도 및 압력을 조절하였다. 온도 60℃와 90℃, 압력 4bar의 오일을 공급하는 상태에서 터보과급기가 회전수 30,000~90,000rpm으로 작동할 때 터보과급기 회전속도 증가할 때 마찰손실은 증가하며, 대략적으로 과급기 회전속도의 1.4∼1.8 지수승에 비례함을 보이고 있다. 또한 오일온도가 60℃에서 90℃로 증가할 때 마찰손실은 최소 41%, 최대 63% 감소하였다. Turbocharging is widely used in diesel and gasoline engines as an effective way to reduce fuel consumption. But turbochargers have turbo-lag due to mechanical friction losses. Bearing friction losses are a major cause of mechanical friction losses and are particularly intensified in the lower speed range of the engine. Current turbochargers mostly use oil bearings (two journal bearings and one thrust bearing). In this study, we focus on the bearing friction in the lower speed range. Experimental equipment was made using a drive motor, load cell, magnetic coupling, and oil control system. We measured the friction losses of the turbocharger while considering the influence of the rotation speed, oil temperature, and pressure. The friction power losses increased exponentially when the turbocharger speed increased.

Effects of artificial water treatment on the growth and leaf characteristics of Fraxinus rhynchophylla and Fraxinus mandshurica

Jin Chul Chung(정진철),Jeong Ho Choi(최정호),Kyong Woo Park(박경우),Se Kuel Yoo(유세걸),Soo Won Lee(이수원),Jong Hyang Bae(배종향) (사)한국생물환경조절학회 2007 시설원예‧식물공장 Vol.16 No.2

인위적인 수분처리에 대한 묘고생장 결과 물푸레나무는 수분처리의 영향을 크게 받지는 않았으나, 토양수분이 감소할수록 생장이 감소하였고, 들메나무는 상대적으로 토양수분이 높은 처리구(78~90%)에서 높은 생장을 보였다. 물푸레나무와 들메나무의 큰원직경 또한 토양수분이 감소할수록 생장이 감소하는 경향을 보였다. 물질생산량의 변화는 물푸레나무의 경우 잎, 줄기, 뿌리 등 건중량이 각 처리구별로 토양내 수분이 낮아질수록 통계적으로 유의성을 보이면서 감소하는 경향을 나타냈으며, 토양수분이 78~90%(A)인 처리구에서는 상대적으로 18~30%(D)처리구에 비해 약 2배 이상 높은 물질 생산량을 나타냈다. 들메나무도 각 처리구간에 차이를 보이면서 A처리구와 D의 처리구에서는 통계적으로 유의성을 보였다. 이는 토양수분이 묘목의 수세 약화 및 잎을 포함한 조직의 연화 등 생리적인 부분에 영향을 미치는 것으로 생각된다. 물푸레나무와 들메나무의 엽 특성중 SLA는 토양수분처리에 따라 통계적으로 유의성을 보이진 않았지만 처리구간 수분함량이 적을수록 감소하는 경향을 나타냈다. 그러나 LAR과 LWR의 경우에는 각 처리구간 토양내 수분함량이 적을수록 통계적으로 유의성은 나타나지 않았지만 증가하는 경향을 나타냈다. Although the result of the tree height growth after water treatment, Fraxinus rhynchophylla has little affection by the artificial water treatment, the growth showed decreased tendency as the soil moisture decreased, and F. mandshurica showed high growth in relatively high soil moist 78~90% treated area, The growth of root collar diameter of F. rhynchophylla and F. mandshurica also showed decreased tendency as soil moisture decreased. The changes of biomass according to dry weight of root, stem, leaves of F. rhynchophylla demonstrating statistical significance as moisture contents of soil is lower showing decreased biomass tendency and in the treatment of 78%~90%(A) moisture content showed more than double the higher biomass compare to the treated area of 18~30%(D) moisture contents. Also F. mandshurica showed statistical significance in A and D treatment demonstrating differences among each treatment. This can be purported to have physiological effects like weakening of seedling and softening of tissues including leaves as soil moisture decreased. Ultimately it is regarded to the main reason of unsatisfactory growth for F. rhynchophylla and F. mandshurica that are weak to drought resistance. SLA, which is one of the special traits of leaf area of F. rhynchophylla, didn't show statistical significance between moisture process, it demonstrated decreased tendency as the moisture content interval is minimal. LAR and LWR showed increased tendency while moisture content didn't show statistical significance between treatments as they are minimal.

이승만정권기 경제개발3개년계획의 내용과 성격

정진아(Chung Jin-A) 고려대학교 한국학연구소 2009 한국학연구 Vol.31 No.-

1956년, 6.25전쟁 전 수준으로 생산력이 회복되자 한국정부는 장기경제개발계획 시안을 미국에 제출하고 개발의지를 표명하였다. 미국의 동의하에 1958년 4월 경제개발계획을 전담할 산업개발위원회가 발족되었고, 산업개발위원회는 1960년 4월 경제개발3개년계획을 국무회의에 제출하였다. 경제개발3개년계획은 장기적인 과제로서 경제자립을 염두에 두면서 국가 주도 하에 중화학공업의 발전에 주력하는 계획이었다. 이승만정권은 자본과 기술의 한계로 인해 자본가들이 쉽게 추진하기 어려운 중화학공업의 건설을 국가가 집중 지원함으로써 급속한 경제발전을 이루고 북한과의 체제경쟁에서 승리하고자 하였다. 이러한 이승만정권의 국가 주도 산업화정책과 경제개발계획의 기획과 구상은 박정희정권이 추진한 경제개발5개년계획으로 현실화되었다. After productive power was recovered up to the level of the prewar period, The South Korean government submitted a tentative plan for a long term economic development to the United States. Under the agreement with the United States, the Committee for Industrial Development was created in n April 1958, who submitted a three-year plan for economic development to a Cabinet council in April 1960. This plan was a long term project, which focused on the development of heavy chemical industry while keeping economic independence in mind. Rhee government’s state-led industrialization policies and economic development plans centered on heavy chemical industry were eventually realized to Park Chung Hee’s economic development plans.

춘원 이광수의 소설 <사랑>의 불교적 상호텍스트성 -불교 시 <인과>,<애인>, <법화경>을 중심으로-

정진원 ( Jin Won Chung ) 한국텍스트언어학회 2006 텍스트언어학 Vol.20 No.-