액체 로켓 추진 시스템의 최적 비용 설계

임진우,김진석,김영복,정규현 한국신뢰성학회 2022 한국신뢰성학회 학술대회논문집 Vol.2022 No.11

항공기 형상의 2단계 공력최적설계를 위한 Kriging 모델과 Adjoint Variable 기법의 활용

임진우,이준석,이병준,김종암(Kim Chongam) 한국산업응용수학회 2009 한국산업응용수학회 학술대회 논문집 Vol.4 No.2

본 연구에서는 global optimization method 와 local optimization method 의 장점을 취하여 multi-stage 설계 방법을 제안하였다. 설계변수가 상대적으로 적은 날개 평면설계에 kriging + EI 와 GA(Genetic Algorithm) optimizer 를 적용하여 global optimization 을 수행하였다. 반면 상대적으로 설계변수가 많은 날개 표면 설계 문제에 discrete adjoint approach 를 적용하여 local optimization 을 수행하였다. Multi-stage 설계의 성능 검증을 위해 drag-decomposition 을 통해 최적설계 전후의 drag 감소량을 induced drag, wave drag 등으로 구분하여 비교하였다.

(구)장항제련소 주변 부지 매입구역 비소 오염토양에 대한 중성 인산염 토양세척법의 적용가능성 평가

임진우,김영진,양경,남경필,Im, Jinwoo,Kim, Young-Jin,Yang, Kyung,Nam, Kyoungphile 한국지하수토양환경학회 2014 지하수토양환경 Vol.19 No.4

In accordance with the view on remediated soil as a resource, this study assessed the applicability of soil washing with the neutral phosphate for remediation of arsenic (As)-contaminated soil. Three soil samples of different land uses (i.e., rice paddy, upland field and forest land) were collected from the study site, and the aqua regia-extractable As concentrations were 59.2, 30.8 and 53.1 mg/kg, respectively. Among the neutral phosphate reagents, ammonium phosphate showed the highest As washing efficiency. The optimized washing condition was 2-hr washing with 0.5M ammonium phosphate solution (pH 6) and soil to liquid ratio of 1 : 5. The extraction efficiencies of As did not guarantee the residual soil As concentrations to satisfy the Korea soil regulatory level (i.e., Worrisome level) in the three soil samples. To enhance washing efficiency, the As-contaminated soil was submerged in washing solution (1 : 1, w/v) for 24 hr and 1-hr washing with 0.5M ammonium phosphate solution was tested. As extraction efficiencies of 36.1 (rice paddy), 21.4 (upland field) and 26.4% (forest land) were attained, which satisfied the Worrisome level for Region 1 (25 mg/kg of As) in rice paddy, but not in upland field and forest land.

어뢰의 각 구성부 특성 및 적용된 기술에 관한 연구 동향

임진우,이희진 대한전기학회 2020 전기학회논문지 P Vol.69 No.2

In modern times, competition and confrontation in the oceans between countries are increasing due to conflict factors such as sovereignty, maritime channels, and marine resource development in the world. In order to respond to the conflict, the superpowers and neighboring countries have increased maritime capabilities and developed related weapons systems are working. Korea, which has three sides at sea, is increasing competition among nations to secure national interests in the ocean. in light of this, preoccupation of marine power has become an important task. In this paper, the torpedoes can be understood by describing the general contents of torpedoes, the naval core attack weapon, and the functions and features of each component.

회원작품 - 서울대학교 생명공학연구동

임진우,Im, Jin-U 대한건축사협회 2016 建築士 Vol.2016 No.10

Rousseau의 敎育思想에 關한 一硏究

林鎭宇 김천과학대학 1981 김천과학대학 논문집 Vol.9 No.-

Jean Jacques Rousseau had a repulsion feeling in his mind about the superstitious view on religion, clogmatic creed, absolute government, the extreme difference between rich and poor, their usurped actions to people, and ethical corruption and luxurious life of the upper class. He called these social conditions an artificial state and, from this state, he saw a image of man who was ruined. If he manifested the impression as a ruined man, we can impress it as a human alienation or inhumanized man. We have had sensations from the urbanized society and the mechanized material civilization. Rousseau proposed two directions so that the inequaled and corrupted society would be reformed, and a new moral social order would stand. The one is a political theory through the discourse of social contract, the other is educational thought that he mentioned in "Emile". The main contents of the former is to set up through the social contract. But the contractor, that is, the man, must be reformed in the first place through the education. This is the contents of latter. Rousseau showed the man as a educational object when he said in the Book I Emile that everything is good as it comes from the hands of the Author of Nature, but everything becomes evil in the hands of man. Under the major premise that man is good primarilly, he saw that it is a process of the artificial society that made the man ill. He made a theme to help return man to primitive humanities, and proposed a state of nature as the ideal aims of education. He provided for equality, freedom, compassion, fraternity and spontanity as characteristics of natural state. The aim of this education is not to give something to child, but develope and preserve the natural tendency that child has possessed from birth. As the extreme result of this exertion, We would bring up the moral freeman. This man would be able to get competency and to Keep a new soeial order. The general goal in the educational theory of naturalism may be a human restoration. For the human restoration, in other words, it means that man should be taken out of the artificial society and placed in contact with nature, and discover the natural law, and live according to that law.

병신년에 바라보는 한국 건축설계의 현재와 미래

임진우 새건축사협의회 2015 건축과사회 Vol.30 No.-

現代 敎育理論의 學校敎育에 대한 이미지

林鎭宇 김천과학대학 1993 김천과학대학 논문집 Vol.19 No.-

The purpose of this study is to examine the ideas of schooling in the dominant educational theories in contemporary world, to see how they affected on the image of schooling in the minds of present men. Three representative theories, i.e., theories of deschooling, theories of radical revisionist historians of education, and Marxist theories were consulted. Deschoolers depicted schooling as manipulative, custodial, and meritocratic agency. putting the problems of education in the context of institutionalization, they emphasized the manipulative aspect of schooling. Radical revisionist historians figured schooling as repressive agency for social amelioration. Locating the problems of schooling in the context of social reform, they focused on the inabilityof schooling for social mobility. Marxist theorists viewed school as an agency of social and cultural reproduction. Considering schooling in the milieu of political and cultural domintation, they highlighted the reproductive function of schooling in the capitalist social structure. The image of schooling in the 1970s was not bright. But from the late 1970s on, with the coming of new social ethos and post-Marxist approach, a new image of schooling is forming. The new image is much more affirmative than the immediately former one, recognizing the limitations of former criticisms.

다이나모 기반의 차량 제동력 검사장비 개발 연구

임진우,이광희,김부현,이철희,Lim, Jinwoo,Lee, Kwang-Hee,Kim, John,Lee, Chul-Hee 한국자동차안전학회 2017 자동차안전학회지 Vol.9 No.4

Dynamo based vehicle inspection device is end of line device for automobile industry. The device is utilized as implementing vehicle functionality inspection such as brake force, cruise control, kick-down acceleration, CAN inspection. As dynamo based inspection device is broadly adopted in automobile industry, the dynamic study is required to verify the vehicle test equipment reliability. This research recommends appropriate dynamic brake force inspection procedure and theoretical background for developed equipment. Dynamic characteristic of brake force implementation to roller is simplified. With simplified characteristics, the indirect brake force measurement strategy is developed and adopted. Comparison of each brake force result, the appropriate brake force inspection criterion is given.

노수막종의 비전형적 전산화단층촬영 소견

임진우 대한영상의학회 1988 대한영상의학회지 Vol.24 No.1

The intracranial meningioma represent 15% of all intracranial tumors in adult and CT is the most useful for identifying the meningiomas. Most intracranial meningiomas have typical CT findings of round sharply delineated isodence or hyperdense tumor in a juxtadural location with intense homogenous enhancement and mild degree of peritumoral edema. The authors reviewed 88 cases of meningioma confimed pathologically in Korea university Medical Center for recent 4 years. Among them, 14 cases had unusual CT findings. We described and analized atypical CT findings of these 14 patients. Atypical findings consisted of irregular eccentric low density in 4 cases peripheral cyst formation in 3 cases marked edema in 3 cases low density mass with thick rim enhancement in 2 cases.