PNL S/ABS HUS’G L/R 제품개발을 위한 성형해석

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

The characteristic of sheet metal process is the few loss of material during process, the short processing time and the excellent price and strength. FEA applications with the sheet metal forming process is purpose that increasing due to the potential of time and cost saving. This study are industrial field problem solve using AutoForm which used a Static implicit way. According to this study, the results of simulation will give industrial site good information to access the Design sheet metal forming.

유화제 첨가량이 MMA/BA 합성 라텍스 폴리머 시멘트 모르타르의 특성에 미치는 영향

형원길,조영철,장성주,김완기,소양섭 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2

The purpose of this study is to clarify the effect of the emulsifier ratio on properties of the polymer modified mortar using methylmethacrylate-buthyl acrylate(MMA/BA) latexes, and to obtain basic data necessary to develope appropriate latexes for cement modifiers. Polymer modified mortars using MMA/BA latexes are prepared with various monomer ratios, and tested for air content, flexural and compressive strengths. From the test results. we knew that the water-cement ratio is decreased with an increase in the amount of emulsifier. And the air content is increase with an increase in the polymer cement ratios. In general, the superior compressive and flexural strength of polymer-modified mortars using MMIA/GA latexes is obtained ant a bound MMA content of 80 percent and a emulsifier ratio of 6 percent.

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.

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.

우리나라 近代 學校體育에 관한 硏究 : 1876 ~ 1910을 중심으로 Centered 1876 to 1910

金文燮,元忠熙 公州大學校 스포츠科學硏究所 1996 스포츠科學硏究所論文集 Vol.- No.10

This study investigated physical activities of schools on the basis of the backgrounds to grasp what the school physical education were, how they were developed, and what the significance to the history of physical education in Korea is. In the history of modern physical education, the period of the modern physical education covered 1876 to 1945 - from the year of opening her harbors to the year of the Liberation. But this study excluded 1910 to 1945 - from the year of Japan's colonization to the year of the Liberation, for the education were not performed independently and voluntarily in colony. The period is divided into three according to clear distinctions. The first period is that of the birth of modern physical education. It starts from 1876 when the harbors were opended to the foreigners by Byong-ja-su-ho-jo-yak(丙子修護條約) and ends in 1885 when Christian private schools were established, during which the traditional military arts were educated in My-ye-hak-kyo(武藝學敎) and Won-san-hak-sa(元山學舍). The second period (1885-1904) is that of the reception, when western spots were introduced and physical education was reinforced with the importance of whole-person education. The last period is that of the fixation of modern physical education. It covers from Eul-sa-bo-ho-jo-yak(乙巳保護條約:1905) to Han-il-hab-byoung(韓日合倂:1910), during which nationalistic physical education was activated and the ideologies of modern physical education were established. The findings of the study are as follows: (1) The modern physical education in Korea was regarded as the means of physical training, which shows nationalistic trends. (2) The military arts were educated as formal curricula in the first period, and the military gymnastics was in the second period. And then, in the third period, the school gymnastics was educated for 2 or 3 classes a week as a compulsory subject. In comparison with 3 classes a week of these days, the curriculum of school physical education can be thought to have been formed in this period. (3) In the second period, Christian missionaries introduced western sports such as football, basketball, tennis, and so on, which were performed as extra-curricular activities. Such aspect gave the chance for the diverse curriculum of these days. (4) Won-dong-hoei(運動會), which was performed in Foreign Language School for the first time, was activated continuously. This made a contribution to the popularization of physical education and the formation of the regional culture of physical education. (5) In the process of the modernization of physical education, the concepts of recreation and sanitation added to the simple concept of physical training. And there was a try to systematize the theory of physical education. These enabled the concept of physical education to be extended.

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.

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 : 1. Embryogenic Callus 誘起 및 器內不定胚 發生에 미치는 植物生長調節物質의 效果 1. Effect of Plant Growth Regulators on Embryogenic Callus Induction and Somatic Embryogenesis

宋沅燮,朴仁鉉,丁蓮圭 順天大學校 農業科學硏究所 1990 農業科學硏究 Vol.4 No.-

Young stem and leaf segment of Foeniculum vulgare for producing embryologic callus and embryos were cultured in vitro on various medium as well as MS medium treated with different concentration of plant growth regulators alone or in combination with other plant growth on MS medium, whereas was lower in treatments with BAP and kinetin. The combination effect with 2,4-D 0.01㎎/ℓ and cytokinins varied with kind of cytokinins. The plot of BAP added with 2,4-D 0.01㎎/ℓ was effective as high as 2,4-D alone treatment. MS and MT medium were more effective than LS and W medium in production of somatic embryos from incubated embryologic callus. Most favorable plant growth regulator for producing somatic embryos was 2,4-D 0.01㎎/ℓ but IAA, ABA, BAP, and kinetin were less effective at any concentration. BAP 0.01㎎/ℓ added with 2,4-D 0.1㎎/ℓ effective as high as 2,4-D 0.1㎎/ℓ alone in somatic embryo 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.

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.