• 한국정밀공학회지
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• 제20권3호
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• pp.221-229
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• 2003

In the early phases of the product life cycle, Life Cycle Assessment (LCA) is recently used to support the decision-making fer the conceptual product design and the best alternative can be selected based on its estimated LCA and its benefits. Both the lack of detailed information and time for a full LCA fur a various range of design concepts need the new approach fer the environmental analysis. This paper suggests a novel approximate LCA methodology for the conceptual design stage by grouping products according to their environmental characteristics and by mapping product attributes into impact driver index. The relationship is statistically verified by exploring the correlation between total impact indicator and energy impact category. Then a neural network approach is developed to predict an approximate LCA of grouping products in conceptual design. Trained learning algorithms for the known characteristics of existing products will quickly give the result of LCA for new design products. The training is generalized by using product attributes for an ID in a group as well as another product attributes for another IDs in other groups. The neural network model with back propagation algorithm is used and the results are compared with those of multiple regression analysis. The proposed approach does not replace the full LCA but it would give some useful guidelines fer the design of environmentally conscious products in conceptual design phase.

• 한국지반공학회논문집
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• 제21권5호
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• pp.123-131
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• 2005

우리나라에서는 최근 해안 매립지역에서의 건설공사가 증가하고 있는 추세이다. 이러한 경우 말뚝기초에서는 부마찰력과 관련된 안정성 평가가 중요한 설계요소가 된다. 그럼에도 불구하고 말뚝의 부마찰력 문제는 많은 지반 기술자들에게 충분한 이해가 부족한 실정이다. 그 이유는 부마찰력이 말뚝의 침하와 관련된 문제임에도 불구하고 대부분의 설계기준들은 안전율에 의한 말뚝의 지지력 산정에만 초점을 맞추고 있기 때문이라고 생각된다. LRFD 설계법은 말뚝의 지지력과 관련된 극한한계상태해석 외에 침하량과 관련된 사용성해석을 고려하므로 전통적인 국내 설계기준을 보완하는 방법이 될 수 있다. 본 논문에서는 부마찰력이 작용하는 말뚝에서 LRFD 설계기법을 적용하는 방법에 대해 논의하고 이를 전통적인 설계기법과 비교하여 보았다. 또한, 말뚝 재하시험을 통한 실제 사례분석을 통하여 각 설계기법의 적용성을 비교분석 하였다. 이러한 분석을 통해 부마찰력이 작용하는 말뚝의 안정성 분석 시 접하는 문제를 해결하기 위해 몇 가지 대안을 제시하였다.

• Earthquakes and Structures
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• 제4권6호
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• pp.587-606
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• 2013

The given paper presents a new approach in design of seismic isolation systems of base isolated buildings. The idea is to install not one big size rubber bearing under the columns and/or shear walls, or one by one with certain spacing under the load-bearing walls, but to install a group/cluster of small size bearings, in order to increase the overall effectiveness of the isolation system. The advantages of this approach are listed and illustrated by the examples. Also the results of analyses of some buildings where the approach on installation of clusters of rubber bearings was used in their isolation systems are given for two cases: i) when the analyses are carried out based on the provisions of the Armenian Seismic Code, and ii) when the time history analyses are carried out. Obtained results are compared and discussed. Paper also presents, as an example, detailed analysis and design of the 18-story unique building in one of the residential complexes in Yerevan. Earthquake response analyses of this building were carried out in two versions, i.e. when the building is base isolated and when it is fixed base. Several time histories were used in the analyses. Comparison of the obtained results indicates the high effectiveness of the proposed structural concepts of isolation systems and the need for further improvement of the Seismic Code provisions regarding the values of the reduction factors. A separate section in the paper dedicated to the design of high damping laminated rubber-steel bearings and to results of their tests.

• International Journal of Control, Automation, and Systems
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• 제5권1호
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• pp.93-98
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• 2007

A class of new observers in descriptor linear systems, proportional-derivative(PD) observers, are proposed. A parametric design approach for such observers is proposed based on a complete parametric solution to the generalized Sylvester matrix equation. The approach provides complete parameterizations for all the observer gains, gives the parametric expression for the corresponding left eigenvector matrix of the observer system matrix, realizes elimination of impulsive behaviors, and guarantees the regularity of the observer system.

• 디지털콘텐츠학회 논문지
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• 제4권2호
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• pp.157-165
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• 2003

본 논문은 사용성 공학에 기반한 개발 방법론을 고안하여 디지털 디자인이 인터페이스 사용성에 효과적이며 디지털 예술 작품에서도 적용될 수 있음을 보여준다. 본 연구에서 제안한 방법론을 적용하여 구체적인 디지털디자인 작품 개발 사례를 보임으로써 효율성을 제시한다.

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 1998년도 가을 학술발표대회 논문집 디자인 학 연구
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• pp.88-89
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• 1998

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2001년도 Bulletin of The 5th Asian Design Conference International Symposium on Design Science
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• pp.19.2-19
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• 2001

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2003년도 봄 학술발표대회논문집
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• pp.130-131
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• 2003

• 한국실내디자인학회논문집
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• 제19권3호
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• pp.77-85
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• 2010

The Therme Vals is a hotel and spa which combines a complete sensory experience designed by Peter Zumthor. This study aims to find emotional design approaches of the Therme Vals through references, observation from site visit, interview and discussion related to this topic. This space was designed for visitors to luxuriate and rediscover the ancient benefits of bathing. The combinations of light and shade, open and enclosed spaces and linear elements make for a highly sensuous and restorative experience. The study observed the emotional design characteristics of the Therme Vals through space approach, aesthetic and experiential sides. For space approach side, emotional experience in gradual process to approach the space was mentioned, for aesthetic side, mystical combination of light, stone and water was observed, for experiential side, 5 senses experience and space programing for adjusting the density of the space were observed. This study found that the spa has the quality of spiritual, soul-touching delight like religious experience. The fascination for the mystic qualities of a world of stone within the mountain, for darkness and light, for light reflections on the water or in the steam saturated air, pleasure in the unique acoustics of the bubbling water in a world of stone, the ritual of bathing-all these notions were explained in Peter Zumthor's construction details. In the result of the interview and discussion, people love the space and praised it highly for the emotional design regardless of space experience, age, sex or ethnicity. Emotional design approaches based on human nature, materiality, and memory of the places is more powerful than other emotional design ideas with technical devices, special themes, digital effects, vivid colors and shapes.

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2001년도 Bulletin of The 5th Asian Design Conference International Symposium on Design Science
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• pp.34.2-34
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• 2001