• 국제학술발표논문집
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• The 4th International Conference on Construction Engineering and Project Management Organized by the University of New South Wales
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• pp.12-16
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• 2011

Building Information Modeling (BIM) is being widely spread in AEC industry worldwide and also in South Korea. Although the creation of digital model is better to be started at design stage, it can also improve the productivity of construction by simulating the actual construction process and environment. This paper presents application of BIM-based simulations related with design changes to transfer floors in 58-storey reinforced concrete office building. Transfer floor is not only a structurally important part of the building but also a challenging part of the actual construction in terms of sequence and period due to the complexity of the work. Preconstruction of rebar, mechanical, and plumbing is performed to review the construction drawings and to perform clash detection. Each item of application is evaluated for its effectiveness on actual construction and for the development potential.

• 정보교육학회논문지
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• 제12권4호
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• pp.395-404
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• 2008

초등학교 수학과 입체도형 학습은 구체물을 활용한 구체적 조작을 통해서 추상적인 입체도형을 직관적으로 이해하도록 돕는 다양한 활동이 필요하다. 입체도형 학습에 있어 구체물의 활용은 효과적이지만, 구체물에서는 확인이 어려운 전개도나 다양한 형태의 입체도형 등은 컴퓨터의 반구체물을 활용하는 것이 효과적이다. 또한 컴퓨터를 활용하게 되면 방과 후에도 같은 학습 자료를 학생들이 활용할 수 있어서 구체물을 활용한 학습의 한계를 보완할 수 있다. 본 연구에서는 플렉스와 플래시를 개발도구로 사용하여 초등학생 수준에서 쉽게 조작하고 사용할 수 있도록 학습 어플리케이션을 개발하였다. 본 연구에서 개발한 입체도형 학습 어플리케이션 활용을 통해 학생들의 직관적이고 자유로운 탐색 및 구체물의 보완, 학습 흥미유발 등의 효과가 기대된다.

• 한국공작기계학회논문집
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• 제11권3호
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• pp.110-116
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• 2002

Here are shown on stress and vibration evaluations and application of piping system in petrochemical plant with and actual example. While stress evaluation by thermal growth has no argument on the calculated results, vibrational evaluations have some different results in accordance with the evaluation methods. In case of the static stress evaluation the ASME B3l.3 code defines 7000 cycles of fatigue lift: in operating the piping system with a design condition. However, the method of vibrational evaluation on piping systems in petrochemical plants has not been established clearly, yet. In this stuffy, it is purposed to present the requirement of a vibrational evaluation method for petrochemical plant piping system, with an actual application.

• 유체기계공업학회:학술대회논문집
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• 유체기계공업학회 2004년도 유체기계 연구개발 발표회 논문집
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• pp.614-625
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• 2004

The main purpose of this study is to get flowrate coefficient 'q' and to study characteristics of flowrate of screw pump. This study is based on Muskin's formula and depends on the computer simulation. The results of study are as follows. 1. Flowrate coefficient will reduce according to increase of inclination. The larger the pitch ratio is and the smaller the diameter ratio is, the more coefficient reduces. 2. As a rule, the coefficient increases according to reduction of the diameter ratio, but the coefficient tends to reduce when the ratio is less than 0.45. So, in actual application, it is recommended that the ratio should be above 0.45. 3. If the pitch ratio increases, the coefficient increases in case of small inclination and decreases in case of large inclination. 4. The coefficient increases according to number of windings. Especially, singles winding is not used in actual application because it has too small coefficient. 5. The coefficient decreases when the influent water level falls. Flowrate is almost zero when the water level is below $40\%$ of Filling Points.

• 한국환경과학회지
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• 제22권5호
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• pp.533-542
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• 2013

In this study, estimation methods for actual evapotranspiration have been studied using the concept of potential and actual evapotranspiration. Among the diverse estimation methods, SWAT-K application is chosen for hydrological modeling. For Jeju island we have characterized annual and monthly evapotranspiration using SWAT-K. In the results, simulated potential evapotranspiration reached to the 91% of small pan evaporation. With respect to the temperature lapse rate($-6^{\circ}C/km$) depending on the altitude of Halla mountain, evapotranspiration rate decreased by 7.5% compared to the status when the temperature data from the Jeju weather station were applied to the watershed. As the average of annual rainfall increased, potential evapotranspiration was increased, actual evapotranspiration was, however, decreased.

• 한국환경생태학회지
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• 제30권6호
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• pp.970-976
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• 2016

멸종위기종 개체군의 연령구조를 파악하는 것은 개체군의 변동에 관한 정보를 제공할 수 있기 때문에 중요하다. 본 연구에서는 환경부 멸종위기종 II급과 문화재청 천연기념물로 지정되어 있는 남생이 (Mauremys reevesii)의 등갑에 나타나는 성장선으로 실제 연령을 신뢰성 있게 예측할 수 있는지를 평가하였다. 실험개체는 실 연령이 1-9살인 서울동물원에서 사육하는 100개체였다. 성장선은 중앙 추갑판 네 개와 좌우측 첫 번째 늑갑판에서 측정하였다. 연구결과 실 연령 1-5살까지는 성장선의 수가 실 연령보다 많았으나, 6-9살에는 성장선의 수가 실 연령보다 적었다. 실 연령과 성장선 연령을 비교 평가한 결과 성장선으로 실 연령을 예측하는 것은 6살 이하에서 제한적으로 가능한 것으로 나타났다. 본 연구에서 또한 어린 개체와 암컷 남생이들의 등갑의 길이와 너비를 이용하여 나이를 예측하는 수식을 제공하였으나 연구에 사용한 남생이들의 나이가 실 연령이 어린개체들이 대부분이어서 신뢰성 있는 연령예측은 가능하지 않았다. 종합하면, 등갑에 나타난 성장선을 이용하여 남생이의 실 연령의 예측하는 경우, 성장선 6개 이하는 성장선 수의 최소값을 7개부터는 최대값을 이용하는 것이 가능한 실 연령과의 편차를 줄 일 수 있음을 보여준다. 우리의 연구결과가 비록 제한적이기는 하지만, 국내에서 거북류의 성장선의 수를 이용하여 실 연령을 예측한 첫 번째 연구로, 야외에서 멸종위기종인 남생이의 연령을 평가할 때 유용하게 사용될 것으로 판단된다.

• 정보교육학회논문지
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• 제9권4호
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• pp.635-648
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• 2005

21세기를 맞아 컴퓨터와 정보 통신 기술의 발달로 사회는 빠르게 변화하고 있으며, 기하급수적으로 증가하는 인터넷의 사용은 교수 학습의 패러다임을 변화시키고 있다. 따라서 새로운 정보통신기술을 이용한 학교 교육 현장 및 교육방법의 변화는 불가피한 것이 되었다. 21세기의 지식정보사회에 주역으로 살아갈 학생들에게 최첨단 매체를 이용하여 폭발적으로 증가하는 정보를 효과적으로 수용할 수 있도록 하기 위해서는 정보 소양 교육뿐만 아니라 활용 교육, 더 나아가 평생학습 사회 실현을 위한 정보화 조기 교육이 무엇보다 절실히 필요하다. 이에 본 연구에서는 ICT 활용 교육의 가장 중심에 있으면서 ICT 활용 교육을 주도해 나가는데 가장 앞장서야 할 초등학교 교사들의 ICT 활용 능력에 대해 좀 더 구체적으로 파악해 보고 ICT 활용 교육의 실태와 문제점을 알아봄으로써 ICT 활용 교육의 개선 방안을 제시한다.

• 한국CDE학회논문집
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• 제15권2호
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• pp.94-105
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• 2010

Todays, there is fast transition about the new manufacturing IT methodologies from the conceptual phase into the practical application phase for the strengthening of enterprise competitiveness in manufacturing industry. One of those new methodologies is PLM (Product Life-cycle Management). PLM methodology consists of 3D CAD for the product design, PDM (Product Data Management) for the data management based on the collaboration platform and lastly DM (Digital Manufacturing). DM has evoluted from the stand-alone computer simulation of early 1980s, and now it covers the overall production development and production. Unfortunately, there exist serious critical problems about the actual application of DM for the real work. This is owing to the transition of the point of view from stand-alone type application (such as flow simulation or robot simulation) to that of business process about product development and production management. In this paper, we propose an application framework for the successful project with the digital manufacturing methodology with the concept of Information Strategy Planning, which enables the systematic diagnosis and the quantitative evaluation. Also, we introduce the actual practice of the proposing framework with the ISP project for 'Analysis & Simulation Technique of manufacturing process project' that is being conducted by Chungnam Techno Park.

• 교육시설
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• 제16권3호
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• pp.49-58
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• 2009

This study is carried out to understand application type and change of learning space and to find out actual situation of management in open planned elementary schools. The twelve elementary schools were selected based on case studies and fundamental data of the agencies performing basic plan, the actual situation of management was studied by interviews of principals and teachers. By the results, open planned elementary schools have been notably reduced after the year of 2004 and corridor expending type was broadly chosen as a plane type for open space. It was also shown that learning space was transformed to the independent type integrating open space to the unit classroom in most part of twelve cases. In addition, whole sliding doors fixed in open classrooms by some Provincial Office of Education didn't need certain physical shut-offs, and it was considered as one of useful alternatives to manage open space.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 심포지엄 논문집 정보 및 제어부문
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• pp.323-324
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• 2007

For the efficient and accurate development of a biped humanoid robot, systematic humanoid development platform is a necessary component in building the development environment. The simulator is a significant tool to develop a biped humanoid robot. In this paper, we first present a method for constructing a humanoid simulator that can be easily applied to an actual humanoid. Easy transplantation into an actual humanoid increases the efficiency of simulator and the development speed. Systematic structure, closely modeling and prediction of an actual humanoid is a significant part of the simulator to set a goal. Using the simulator, we can predict the motion of an actual humanoid. The functions and the effectiveness of the developed simulator were evaluated through simulated motions and walks.