• Proceedings of the Korea Information Processing Society Conference
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• 2000.10a
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• pp.301-304
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• 2000

전자상거래 지원 시스템에서 판매지원 에이전트는 고객의 취향을 파악하여 구매자에게 가장 적절한 상품을 탐색하여 사용자의 만족도를 극대화할 수 있어야 한다. 이에 인공지능 기법에 하나인 사례기반 추론기법을 이용한 판매지원 에이전트와 감성공학을 응용한 신제품 디자인 개발지원 에이전트를 결합한 다중 에이전트 시스템을 제안하고자 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2004.11a
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• pp.3-6
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• 2004

전자상거래의 지원 시스템에서 판매지원 에이전트는 고객의 취향을 파악하여 구매자에게 가장 적절한 상품을 탐색하여 사용자의 만족도를 극대화할 수 있어야 한다. 이에 데이타마이닝의 기법 중의 하나인 사례기반추론기법을 이용한 판매지원 에이전트와 감성공학을 이용한 신제품 개발지원과 기존 제품의 리모델링을 제시하는 에이전트를 결합한 다중 에이전트 시스템을 제안하고자 한다.

• Environmental Engineering Research
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• v.16 no.3
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• pp.113-119
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• 2011

This study traces the origin, evolution, and current state-of-the-art of engineering-oriented water-quality management and modeling. Three attributes of polluted water underlie human concerns for water quality: rubbish (aesthetic impairment), stink (ecosystem impairment), and death (public health impairment). The historical roots of both modern environmental engineering and water-quality modeling are traced to the late nineteenth and early twentieth centuries when European and American engineers worked to control and manage urban wastewater. The subsequent evolution of water-quality modeling can be divided into four stages related to dissolved oxygen (1925-1960), computerization (1960-1970), eutrophication (1970-1977) and toxic substances (1977-1990). Current efforts to integrate these stages into unified holistic frameworks are described. The role of water-quality management and modeling for developing economies is outlined.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2006.05a
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• pp.415-416
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• 2006

In this paper, we propose the ergonomics design method in shape design applicable which considers the user interface for railroad. This study focuses on ergonomics design and sensibility engineering design, user interface, which should be considered from the conceptual design stage of the rolling. Human's sensitivity and User Interface of railroad investigated ergonomics studies of several type. The sensibility engineering design made approach of user center design in railroad design. New design railroad to satisfaction passenger's various desire, to safety and convenient through high technology, to sufficient passenger's aesthetic sense. Therefore, we have application to properly of ergonomics design element in railroad design. we expert visual design and user interface help greatly in excellent railroad design.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2011.10a
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• pp.135-136
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• 2011

자유낙체란 자유로이 낙하하는 물체를 말한다. 즉 물체의 초기 운동 상태와 무관하게 중력의 영향으로만 자유롭게 낙하하는 물체를 말하는 것이다. 본 논문에서는 공기의 저항을 무시하고, 수직방향으로 짧은 거리의 범위 내에서 고도에 의한 자유낙하 가속도의 변화가 없다고 가정한다. 이러한 가정 하에, 자동차가 수직 상 방향으로 출발하여 최고점에 도달하는 시간, 최대높이, 자동차가 출발 위치로 돌아오는 시간과 자동차의 속도, 자동차가 땅에 떨어질 때의 시간 및 속도에 대하여 알아본다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2011.10a
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• pp.153-156
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• 2011

수면은 인간에게서 중요한 생리 현상이며, 인간은 일생의 삼분의 일 정도를 잠을 자면서 보낸다고 한다. 본 논문에서는 이러한 수면을 이루는 환경을 개선하기 위하여 수면을 측정하고 수면의 질 발전 방향을 모색한다. 수면 측정을 위하여 $X^2$ 히스토그램을 이용한 장면 전환 검출 방법을 이용한다. $X^2$ 히스토그램 방법은 통계학적 장면 전환 검출 방법의 하나로서 다른 히스토그램 방법보다 성능이 우수하기 때문에 많은 연구에서 사용된다. 그리고 수면의 질을 발전시키기 위하여 피곤한 정도, 음주의 정도, 그리고 공복의 정도를 입력하여 각 상황별 뒤척임을 추출한다.

• Steel and Composite Structures
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• v.17 no.5
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• pp.735-751
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• 2014

Concrete-filled steel tube (CFT) composite columns, either circular (CCFT) or rectangular (RCFT), have many economical and aesthetic advantages but the behavior of their connections are complicated. This study aims to investigate, through an experimental program, the performance and behavior of different connections configurations between circular concrete filled steel tube columns (CCFT) and gusset plates subjected to shear and axial compression loadings. The study included seventeen connection subassemblies consisting of a fixed length steel tube and gusset plate connected to the tube end with different details tested under half cyclic loading. A notable effect was observed on the behavior of the connections due to its detailing changes with respect to capacity, failure mode, ductility, and stress distribution.

• Journal of the Korean Society for Precision Engineering
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• v.17 no.6
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• pp.69-75
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• 2000

At the stage of initial design, prototypes are needed for engineering and aesthetic purposes. In order to get a fast and non-expensive prototype, designers prefer rapid prototyping(RP) to any other means. In driving a 3D CAD model into rapid prototyping, sectioning the model is essential and there are two negotiation-needed targets, enhancing accuracy while taking less build-time, which makes adaptive slicing taken into account. In spite of the advantages of adaptive slicing, it is not yet applied to real RP machines because of the limits of hardwares. In this thesis, a new slicing algorithm which (1)uses several values of thickness available in a RP machine. (2)determines total number of layers to make the prototype within the intended time and (3)arranges the layers using orthogonal arrays to minimize the volume error caused by the difference between a given CAD model and a fabricated model is presented. And the algorithm is expected to have possibility of assisting RP machines to take the advantages of adaptive slicing.

• Structural Engineering and Mechanics
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• v.10 no.1
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• pp.27-36
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• 2000

The Oktalok nodal connection system is an aesthetic and efficient system. It has been widely used throughout Australia. The paper will briefly introduce the concept and application of the Oktalok nodal system. The existing design method is based on the assumption that the joints are pin-ended, i.e., the rotational stiffness of the joints is zero. However the ultimate capacity of the frame may increase significantly depending on the rotational stiffness of the joints. Stiffness tests and finite element simulations were carried out to determine the rotational stiffness of the Oktalok joints. Column buckling tests and non-linear finite element analyses were performed to determine the member capacity of columns with semi-rigid end conditions. A simple formulae for the effective length factor of column buckling is derived based on the above experimental and theoretical investigations.

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.37 no.4 s.112
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• pp.52-59
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• 2005

Most of printing paper market today have been occupied by western paper and some machine-made Hanji used don't show the characteristic advantages for traditional hand-made Hanji. Although hand-made Hanji has an aesthetic and qualitative value, it has limited uses because of poor printability as printing paper. Unlike western paper, conventional Hanji cannot be used as Printing paper because it is impossible to make the clear formation of printed dot and to develop a high level of sizing and picking problem occurs during printing. Improvements of physical and optical properties such as roughness, smoothness, air permeability, contact angle, opacity, and paper gloss as well as sizing level were accomplished through internal and surface sizing and calendering, which made the paper better suited for printing and decreased problems during printing.