스템핑 금형개발을 위한 SPCC소재와 SPCEN소재의 비교연구

정동원,안현길,문원섭 제주대학교 공과대학 첨단기술연구소 2005 尖端技術硏究所論文集 Vol.16 No.2

The static implicit finite element method is applied effectively to analyze total panel stamping processes, which include the forming stage. Complicated and abnormal large size panel was analyzed by using commercial program called Auto-Form. Analysis results examining possibility and validity of the Auto-Form software and the factor study are presented. Further, the simulated results for the total panel stamping processes are shown and discussed. Its application is being increased especially in the automotive industrial area for the cost reduction, weight saving, and improvement of strength.

目標管理를 通한 企業成長方案에 關한 硏究

楊雲燮 群山大學校 1982 論文集 Vol.4 No.-

Management is the dynamic force which converts human and nonhuman resources into organizational Performances. It is a process which integrates previously stated resources into something that is greater than the mere sum of its parts. So the role of management is to facilitiate the effective and efficient attainments of organizational goals and personal needs of its members. Today's manager, however, has faced with difficulties in the light of changing environment, and it is his agency to deal with the change and must cope with the environment it has set in turbulent motion. And these difficulties should be solved not by the external factors, but by the internal factors such as motivation, participation in management and self-goal setting or self-control etc. Management by objectives (MBO) is best known as a system which encourages increased participation in management of the organization at all levels and emphasizes accomplishments and results and also a system of management designed to faciliate planning and organizational control, organizing and assigning tasks, problem-solving and decision-making, and motivation and self-control, as well as other important functions and activities. Activities such as performance appraisal, manager development, Compensation and manpower-planning can be meaningfully integrated into this system. The writer assumed that the actual application of this MBO system in organization through member-control by planned objective members and management productivity by objectives should be very helpful trying for the growth of Enterprise, so he studied the above title as the following contents.

백양꽃(Lycoris koreana) × 개상사화(Lycoris aurea) 교잡 미숙배로부터 식물체 생산

송원섭,박인현,박진형 圓光大學校大學院 1992 論文集 Vol.10 No.-

This experiment was conducted to investigate cultural conditions of immature embryo in Lycoris koreana×Lycoris aurea hybrid. Optimum concentration of ager supplemented to Murashige and Tucker(MT) medium for plantlet production was 6g/l. Optimum concentration of sucrose supplemented to MT medium for plantlet production was 30~50 g/l. For plantlet prodution, MT medium supplemented with NAA 0.01 mg/l plus zeatin 0.1~0.01mg/l and without olant growth regulator was most effective. Optimum level of PH controlled to MT medium for plantlet productiom was 4.5~5.0. Key words : Lycoris koreana, Lycoris aurea, immature embryo, plantlet production.

개방 스터브를 갖는 평행결합선로의 해석과 응용

이원균,이홍섭,황희용 江原大學校 産業技術硏究所 2007 産業技術硏究 Vol.27 No.B

In this paper, the exact analysis of the parallel coupled line with open stub is presented. This structure shows LPF characteristics with broad stopband and sharp skirt characteristics. We derived the exact Z-matrix expression of the structure. In order to show the validation of the expression we designed 3^(th) order Chebyshev LPF using the structure. The simulated data excellently agreed with the predicted values by the calculation using the derived expression.

초등학교 내 특수학급 교사의 사기 분석 연구

김원경,임종섭 한국정신지체아교육학회 2001 지적장애연구 Vol.3 No.-

본 연구는 초등학교내 특수학급 담당교사들의 사기 정도를 교육정책, 보수 등 8가지 문항으로 구성된 설문지에 의한 조사를 기초로 분석하였다. 충청남도내 특수학급 설치교 187개소를 대상으로 표집하였고, 사기 저해 요인을 담당교사들의 성별, 교육경력, 교사자격 소지유형, 도시 농촌등 소재지에 따라 어떤 차이가 있는지 연구하였다. 연구결과 사기정도는 남자보다 여자 교사의 인식정도가 낮았고, 자격 소지 면에서는 특수학교 교사자격증 1개 소지자가 가장 불만이 높았으며, 특수교육 경력과 학교소재지는 비슷한 수준으로 인지되고 있었다. 특수교사 사기 진작을 위하여 개선해야 할 우선 준위는 특수교육 정책, 근무환경, 승진 등으로 나타났다. This study is designed to make an analysis of what differences the knowledge of teachers for the handicapped regarding the factors of lowering their morale make in accordance with the types of the teachers and to offer measures to promote the morale of teachers in charge of special classes. The researcher worked with the questionnaires of 111 teachers(recovery ratio:59.4%) out of those of a total of 187 teachers in charge of elementary classes in South Chungcheong province. The questionnaire was composed of 24 questions in 8 categories with the help of the opinions of the teachers in charge and my academic adviser as well as literary research and precedent study: educational polices for the handicapped(3), human relationship(3), pay(3), social status(3), working environment(4), principals' leadership(3), promotion(2), and personnel matters(3) It is necessary that educational policies for the handicapped should first be subjected to changes with the view of promoting the morale of teachers in charge of education for the handicapped. And the subjects want working environment and promotion system to be improved. The researcher suggests that such compensation measures as providing additional points and extra benefits should be supplemented and improved and that facilities for the handicapped should be expanded with a view to enhancing the morale of teachers in charge of special classes.

벌꿀 및 당액의 혼합비에 따른 수분활성도 예측

심원근,이은현,강현아,장규섭 충남대학교 농업과학연구소 1995 농업과학연구 Vol.22 No.2

In order to distinguish the honey in the market whether it is real or not simply and conviniently, the changes of water activity was investigated due to the addition of starch syrup and sucrose solution to the honeys such as Korean, Acacia, Chestnut and Mixed. The regression equations were obtained to predict the water activity of the honeys. In general, the honey was below 21% in moisture, below 0.6% in ash, 420 to 710cP in the viscosity, 0.57 to 0.62 in the water activity and 77 to 80brix in sugar content. The water activity of the samples were higher as the quantity of starch syrup and sucrose solution added increased. Starch syrup was more influence than sucrose solution. The regression equations between water activity and starch syrup concentration of honeys were obtained and R^2 value were higher than 0.90.

열전 반도체를 이용한 냉수기 개발에 관한 연구

이원희,정순원,구경완,이명섭 永同大學校 1997 硏究論叢 Vol.3 No.1

본 논문에서는 기존의 냉매 대신에 열전 소자를 사용하여 구성한 냉수기가 갖는 여러 가지 장점 및 냉수기의 중요 소자인 TEC 모듈(Thermo Electric Cooler Module)에 대한 최대 효율 구동 방법 등을 연구하였다. 또, 열교환기의 재질 및 모양, 방열판과 냉각팬의 크기 등을 변화시키면서 냉수기로서 최적의 효율을 가질 수 있도록 냉수기를 설계하였고, 그 설계를 바탕으로 실험을 하여 TEC 모듈(Thermo Electric Cooler Module)을 이용한 냉수기가 상품화 가능성이 있는지를 검토하였으며, 그 결과를 기술하였다. We developed a new cooling system which applies TEC module using peltier effect. Our cooling system has better effiency and make smaller pollution than conventional cooling system. We applies that cooling system to making cool water dispenser. We designed the cold water dispenser of optimum effiency varying material, shape, and size of heat sink and cooling fan. The possibility of a commodity on this designed cold water dispenser is investigated.

쉘 요소를 이용한 박판 성형 공정 해석의 산업현장 적용에 관한 연구

정동원,고형훈,문원섭 제주대학교 공과대학 첨단기술연구소 2005 尖端技術硏究所論文集 Vol.16 No.2

Finite element analysis of sheet metal forming process is generally carried out by the explicit and implicit time integration method. And membrane, shell and continuum element are applied to finite element analysis. Membrane analysis can not provides sufficient information for the process which involve considerable bending effects. Shell element allows the consideration of bending effects, but involves too much computational time. In order to estimate in sheet metal forming processes used Auto-Form software using static-implicit method and shell element. Result, by applying this to an industrial site the productivity improvement and cost reduction etc. effect able was predicted.

정적-내연적 이론을 이용한 Cowl Top Otr 판넬 해석에 관한 연구

정동원,안현길,고형훈,문원섭 제주대학교 공과대학 첨단기술연구소 2005 尖端技術硏究所論文集 Vol.16 No.1

The static implicit finite element method has been effectively applied to analyze total cowl top otr panel stamping processes, which include the forming stage. Complicated and abnormal large size cowl top otr panel was analyzed by using commercial program called AutoForm. Analysis results examining possibility and validity of the AutoForm software and the factor study are presented. Furthermore, the simulated results for the total cowl top otr panel stamping processes are shown and discussed. Its application is being increased especially in the automotive industry for the cost reduction, weight saving, and improvement of strength.

茴香(Foeniculum vulgare G.)의 器內增殖 : 2. 몇가지 유기물과 활성탄의 첨가가 器內不定胚 發生에 미치는 效果 2. Effect of Complex Addenda and Activated Charcoal on somatic Embrogenesis

宋源燮,朴仁鉉,丁蓮圭 順天大學校 農業科學硏究所 1991 農業科學硏究 Vol.5 No.-

Somatic embryogenesis from incubated embryogenic callus in vitro cultured stem and leaf segment of Foeniculum vulgare promoted with complex addenda(coconut milk, yeast extract, malt extract and sucrose) as well as sucrose added on MS medium containing 2,4-D 0.01㎎/ℓ or not. Treatment of coconut milk 50㎎/ℓ was effective, otherwise the higher concentration decreased production of somatic embryos. Up to 300㎎/ℓ of yeast extract increased embryogenesis rate but 500㎎/ℓ treatment severely dropped the rate. Malt extract and sucrose increased proportionally the rate of somatic embryogenesis with higher concentration, up to 87% in malt extract 500㎎/ℓ and 93% in sucrose 50g/ℓ when 2,4-D 0.01㎎/ℓ was added on the medium. Activated charcoal treatment decreased remarkably the rate of somatic embryogenesis. In all treatment the adding plots of 2,4-D 0.01㎎/ℓ was higher than the non-adding plots in somatic embryogenesis.