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이원영,Lee, Won-Yeong 대한석유협회 1992 석유와 에너지 Vol.1992 No.7
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FMS의 고장진단을 위한 전문가 시스템의 구축방안에 대한 연구
이원영 한국경영과학회 1995 經營 科學 Vol.12 No.1
The objective of this paper is to present a framework for an expert system for fault diagnosis in an FMS(Flexible Manufacturing System). First, a system is analyzed structurally and functionally, giving the relationships between the system's components. These relationships, represented by strata, are then stored in a deep knowledge base(DKB). Next, the specific knowledge, represented by echelons, about the symptoms and their probable causes for each component is stored in a shallow knowledge base(SKB) in the form of rule. When the fault diagnosis process begins, it starts to search the DKB and then the SKB, which is called hybrid reasoning in artificial intelligence.
이원영,Lee, Won-Young 한국기록학회 2000 기록학연구 Vol.0 No.2
The classification of records is basically different from that of librarian materials because records have a nature of spontaneous and correlated product made during the process of work, as well as a value of proof and information. Hence the main task of archival management institute is to classify those records through the process of transfer and receipt for the purpose of reservation and utilization of their value. Therefore, the records should be classified by the manner, which reflects the function and organization of producing institute, and in turn, the principles of producing site and original record order should be maintained for this purpose. The characteristics of librarian materials and records and the tasks of management institutes form the basis of very different principles. The records can present the characteristics of producing institute and maintain the value made by the correlated nature as they are classified, managed and preserved by the above principles, In addition, it is known how and why they were produced and utilized, as well as they can be preserved in original form and effectively arranged, recorded and managed.
이원영,김동준,김윤중,한국희,유홍근,김현철,진세환,구제환,김도영,조광섭,Lee, Won Young,Jin, Dong Jun,Kim, Yun Jung,Han, Gook Hee,Yu, Hong Keun,Kim, Hyun Chul,Jin, Se Whan,Koo, Je Huan,Kim, Do Young,Cho, Guangsup 한국진공학회 2013 Applied Science and Convergence Technology Vol.22 No.3
The influence of gas flow on the plasma generation in the atmospheric plasma jet is described with the theory of hydrodynamics. The plasma discharge is affected by the gas-flow streams with Reynolds number (Re) as well as the gas pressure with Bernoulli's theorem according to the gas flow rate inserted into the glass tube. The length of plasma column is varied with the flow types such as the laminar flow of Re<2,000 and the turbulent flow of Re>4,000 as it has been known in a general fluid experiments. In the laminar flow, the plasma column length is increased as the increase of flow rate. Since the pressure in the glass tube becomes low as the increase of flow velocity by the Bernoulli's theorem, the breakdown voltage of plasma discharge is reduced by the Paschen's law. Therefore, the plasma length is increased as the increasing flow rate with the fixed operation voltage. In the transition of laminar and turbulent flows, the plasma length is decreased. When the flow becomes turbulent as the flow rate is increasing, the plasma length becomes short and the discharge is shut down ultimately. In the discharge of laminar flow, the diameter of plasma beam exposed on the substrate surface is kept less than the glass diameter, since the gas flow is kept to the distinct distance from the nozzle of glass tube. 대기압 플라즈마 제트 장치의 유량 변화에 대한 플라즈마 방전 특성을 실험적으로 조사하고 이를 유체역학적으로 해석하였다. 유리관에 주입되는 아르곤 기체의 유량 변화에 대한 레이놀즈 수(Re)로 결정되는 기체 흐름의 형태 변화와 베르누이 정리에 의한 압력 변화가 플라즈마 발생에 영향을 준다. 유리관 내부에 발생하는 플라즈마의 길이 변화의 실험을 통하여, 아르곤 기체에 대한 레이놀즈 수가 Re<2,000이면 층류이고, Re>4,000이면 난류가 형성된다. 이는 일반 유체에서 알려진 결과와 일치한다. 층류에서 유량의 증가로 플라즈마의 길이가 증가한다. 층류와 난류의 전환 영역에서 플라즈마의 길이는 줄어든다. 난류 영역에서는 방전 기체의 흐름이 불규칙함으로서 방전 경로가 흐트러져 플라즈마 칼럼의 길이가 매우 짧아지고 급기야 플라즈마가 소멸된다. 층류에서 주입 유량의 증가로 유리관 내의 유속이 증가하면, 베르누이 정리에 의하여 유리관 내부의 압력이 낮아진다. 관내의 압력이 낮아지면, 파센 법칙에 의하여 관내의 전기장의 세기가 증가하여 방전 전압이 낮아진다. 따라서 주입 유량이 증가하면, 동일한 구동 전압에서 유리관에 발생하는 플라즈마의 길이는 길어진다. 층류의 방전은 유리관 밖에서도 층류의 흐름이 일정 길이로 유지되므로 시료 표면에 조사되는 플라즈마 빔의 직경은 유리관의 직경 이하로 유지된다.
이원영,장규섭,최용희,Lee, Won-Young,Chang, Kyu-Seob,Choi, Yong-Hee The Korean Society of Food Preservation 2000 한국식품저장유통학회지 Vol.7 No.2
A supercritical fluid extraction was performed for the extraction of phenolics from grape seeds which up to now have been discarded. The optimum condition for extraction process was predicted through response surface methodology using central composit experimental design. The extraction amount of grape seed phenolics was increased by increasing extraction temperature, pressure, and concentration of co-solvent (ethanol). The optimum extraction conditions were 84.83$^{\circ}$C, 51.50MPa and 1.27% ethanol. The yield of phenolics using SFE was higher with 3 folds than ethanol and 4 folds than hexane but less than 80% methanol. In the respects of food poisoning, the approved solvents were restricted to ethanol and hexane. So, SFE for extraction of phenolics could be powerful alternative method for solvent extraction.
이원영,조근호,박천호 한국화훼연구회 2001 화훼연구 Vol.9 No.1
This study focuses on changes in the kinds of flowers, colors, shapes of bridal bouquet in Korea for 50 years from 1950's to 1990's. The results show that two to three kinds of flowers were used in 1960's and 1970's, but various materials were used in 1980's and 1990's. White chrysanthemums rank first in 1950's and 1960's, carnations in 1970's, but roses and cymbidiums in 1980's, and use of cymbidiums, roses, and denphalae increased in 1990's. When it comes to foliage, camellia leaf used most frequently until 1960's and Asparagus in 1970's, but use of various tropical foliage such as scindapsu, ivy, Rumora fern increased in 1980's. In colors, white was most preferred in 1950's and 1960'sl pink was added in 1970's, but both white and pink were used in bouquet and boutonniere in 1990's. In shape, large arm bouquet was most preferred in 1950's. Round bridal bouquet with long asparagus stem was most favorite style in 1960's and 1970's, cascade shape and empire bouquet in 1980's, and various bridal bouquet such as cascade, round, triangular and free style in 1990's. In boutonniere they used triangular most frequently.