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김경모 동의공업대학 1999 論文集 Vol.25 No.1
This paper describes the development of a turbulence model based on the eddy viscosity concept. The model is a combination of the Squire eddy viscosity model applied to the inner region and the outer Cebeci - Smith eddy viscosity model, Calculated results show that the model is capable of predicting accurately the steady two dimensional incompressible turbulent boundary layers without pressure gradients some results for the unsteady case are also presented. The potential of extending the model for a variety of turbulent flows is also discussed.
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김경모 金烏工科大學校 1993 論文集 Vol.14 No.-
Determining the tolerance of materials and parts for the given specification of finished goods is still longstanding problem to be solved in engineering department. The method of determining engineering tolerance proposed by Taguchi is well known for its simple concept and so can be easily used in practical fields. In reality, three major factors to determine the tolerance(the cost factors, parameters for the distribution of the cause-characteristics, and the relationship between the cause-characteristics and the object-characteristics) are uncertain yet. This study proposes a robust design procedure to determine the tolerance of the cause-characteristics. A hypothetical problem is analyzed to show the usefulness of the proposed procedure.
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원자재 Lot Splitting을 고려한 단일제품 생산재고모형
김경모 慶尙大學校 1986 論文集 Vol.25 No.2
An integrated production-inventory model with raw material lot splitting is analyzed. The model incorporates the problem of determining the production batch size and the procurement policy for the deteriorating raw material. It is found that the production-inventory system is sensitive to raw material lot splitting. When The deteriorating constants are quite large and/or the ordering costs of raw material are small relative to the other system costs, a substantial cost savings would be achieved if we raw material lot splitting.
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김경모 동의공업대학 1998 論文集 Vol.24 No.1
This paper describes an experimental study of the low frequency transverse vibration modes of a thin circular flat plate that is simply supported at three or four points on the circumference, carried out by using time-averaged holographic interferometry. The main purpose of the experimental investigation was to determine the natural frequencies and the corresponding mode shapes of the circular plate with three or four simple support points. Natural vibration modes exceeding 50 have been obtained for the two kinds of plates. The natural frequencies obtained have been expressed in terms of a dimensionless frequency parameter. The analytical solutions for the vibrational modes of a thin circular flat plate that is simply supported at three or four points on the circumference are presented. The mode shapes and corresponding eigen values are also obtained. Results show that the modes can be grouped into four different types depending on the manner by which they receive the pressure at the support points. The experimental results are compared with the present theoretical values.
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고등학교 [경제] 수업의 교수-학습 방법에 대한 질적 연구
김경모,황상주 한국사회교과교육학회 2005 사회과교육연구 Vol.12 No.1
The purpose of this study is to investigate the status-quo and teaching method of the [Economics] class of high school qualitatively. Two [Economics] teachers of academic track high school are interviewed in-depth and are observed participantly. By the result of this study the [Economics] class of Korean high school are heavily influenced by the cultural-institutional environment of the preparation for the Korean SAT, especially in the contents and method of teaching and learning pace. As far as the instructional method concerned we can find the very monotonous instructional method, for example, 'problem-solving after explaining the concept and principle or generalization' and 'example-exposing' method, in the [Economics class] The over-all results and the implication of this study is as follows. (1) The rationale and contents of secondary economic education should be based on the concrete class implementation (2) It is urgently required that the instructional manuals should be developed and distributed on national level. (3) Because the economic knowledge and perspectives of economy and economic education is very important there needs the institutional compliment for increasing the expertise of economic class teachers.. 본 연구는 고등학교 경제수업에 대한 질적 연구를 통해 현재 이루어지고 있는 고등학교 경제 수업의 현실과 교수-학습 방법에 대해 파악하고자 한 연구이다. 자료 수집은 인문계 남자 고등학교의 [경제]담당 두 명의 교사를 선정하여 그들의 수업을 참여관찰하고 심층면담의 방법을 통해 이루어졌다. 고등학교 [경제]수업은 ‘수학능력시험 대비’라는 문화적․제도적 환경에 의해 수업의 내용과 방법, 진도 등의 편제 등이 크게 영향을 받고 있었다. 수업에서 교사들이 주로 보이는 교수-학습의 형식은 ‘개념․원리설명 후 문제풀이’였으며, 추상적 내용을 현실과 연결시켜 이해할 수 있는 ‘사례 제시’의 방법을 주로 활용하였다. 즉매우 교사 중심의 단조로운 교수-학습 방법이 적용되고 있었다. 연구의 결과를 통해 시사점을 정리하면 다음과 같다. 먼저, 무엇보다도 교실 현장 의 상황을 기반으로 경제교육의 방향이나 내용이 설정될 필요가 있다는 점이다. 둘째, 국가적 차원에서 학교 경제교육의 교수-학습에 직접적 도움이 되는 수업 자료를 개발․보급하는 것이 필요하며, 셋째, 교사들의 경제관과 내용 지식 및 경제교육에 관한 인식이 무엇보다 중요함으로 [경제] 담당 교사들의 교과 전문성을 향상시킬 수 있는 다양한 제도적 보완이 필요하다는 것이다.
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김경모,김현진,김영,조진민,오석희 연세대학교의과대학 2016 Yonsei medical journal Vol.57 No.5
Purpose: Exclusive enteral nutrition (EEN) therapy effectively induces clinical remission in Crohn’s disease (CD). It remains unclear,however, whether partial enteral nutrition (PEN) can maintain remission. This study was performed to determine the abilitiesof oral EEN and oral PEN to induce and maintain clinical remission in pediatric patients with CD, respectively. Materials and Methods: Pediatric patients with CD who received oral EEN at a single center in 2000–2014 were identified retrospectively. Remission rates of the EEN and PEN during the 2 years study period were determined. Risk factors for EEN and PEN failure were identified. Results: Of the 66 patients who started EEN, 61 (92%) completed the course. Clinical remission was achieved in 88% (58/66) of the patients. All 58 patients with remission continued with PEN: 43 (74%) were treatment adherent. The cumulative remission rates at 1 and 2 years were 67% and 52%, respectively. Differing from EEN, limited therapeutic efficacy of PEN was shown in severeCD patients. Female gender associated significantly with non-adherence. Conclusion: Oral EEN and PEN effectively induced and maintained remission in a pediatric population. Non-adherence was a limiting factor in the success of therapy.
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김경모 金烏工科大學校 1994 論文集 Vol.15 No.-
단일제품과 다수의 원자재를 갖는 이단계 조립체계에 대해 제품의 생산주기와 원자재의 주문주기를 동시에 결정하는 통합 생산재고모형을 다룬다. 특히, 구매금액의 상한과 같이 원자재에 대한 제약이 주어진 경우에 적용될 수 있는 고정주기 주문모형에 대해 분석한다. 최적 원자재 group이 consecutiveness property를 갖음을 증명하고, 이 성질을 이용하여 shortest path model을 수립한 후 최적해 결정을 위한 절차를 개발한다, 개발된 해법절차를 가상적인 생산문제에 적용시켜 생산변수들에 대한 생산정책의 민감도를 분석한다.
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