• Product Safety
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• s.204
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• pp.50-53
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• 2010

• Proceedings of the Korean Fiber Society Conference
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• 1997.10a
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• pp.202-206
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• 1997

• Proceedings of the Korean Institute of Landscape Architecture Conference
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• 2014.10a
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• pp.69-70
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• 2014

• The Safety technology
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• no.98
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• pp.38-38
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• 2006

• KCID journal
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• v.13 no.1
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• pp.118-126
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• 2006

• The Journal of Korean Institute of Communications and Information Sciences
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• v.34 no.12C
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• pp.1192-1196
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• 2009

In this paper, we present a bitwise metric generating function for a binary reflected Gray coded (BRGC) M-PSK signal by means of coordinate rotation. Using the properties of the BRGC mapping, we minimize the number of coordinate rotations. The proposed function does not rely on channel state information (CSI), and provides low implementing complexity.

• 한국디지털정책학회:학술대회논문집
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• 2006.12a
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• pp.177-184
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• 2006

지적 창의경영은 지식의 공유와 생성으로 나눌 수 있는 데, 지식 생성 분야에서 창의성 연구에서 나온 창의적 문제해결 방법론이다. 이 글에서는 공학 분야에 주로 사용되는 TRIZ 이론을 비공학 분야와 비즈니스 분야, 지적 창조경영의 지식 생성 분야에서 응용사례와 활용 가능성을 기술하였다. TRIZ는 공학분야의 전세계 특허와 기술혁신 사례들을 분석하여 개발하였으나, 이 창의적 문제해결 이론은 러시아 공산주의 사회라는 특수한 상황에서 개발되어서 경영과 비즈니스를 다루고 연구하는 일에는 많은 어려움이 있었다. 그러나 러시아가 개방되면서 최근 TRIZ의 다양하고 강력한 기법들을 비공학 분야와 선진기업 경영이나 비즈니스에 접목시켜 연구되고 있다. TRIZ연구는 변화와 경쟁이 기본이라고 여겨지는 비지니스 활동에서 강력한 문제 해결능력과 아이디어를 가지도록 도와주고 있다. 이 글에서 비즈니스에서 성공과 실패라는 모순을 일으키는 문제를 고전적인 TRIZ의 모순 해소 매트릭스와 비슷한 비즈니스 매트릭스를 이용해서 해결되는 선진 기업의 창조적 경영 응용 사례를 살펴 보고 향후 활용 가능성을 연구하였다.

• Journal of the Korean Geotechnical Society
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• v.20 no.5
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• pp.59-66
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• 2004

This study compared the reinforcing effect of sand by Geocell to those of newly devised Tirecell$^{\circledR}$ made by waste tires, tire mat by sidewalls of tires. Plate loading tests in a large chamber were conducted for different reinforcing materials at the same conditions of relative density, embedded depth of sand. The combination of Tirecell and sidewall gives the highest increase of bearing capacity and reduction of settlement. The Geocell with the same height of Tirecell gives similar reinforcement effect to the tire mat made by sidewalls.

• Journal of the Korean Geotechnical Society
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• v.15 no.6
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• pp.201-217
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• 1999

Bearing capacity of soil can be improved by several conventional ground improvement techniques like stabilization and compaction. In recent time, the use of reinforced soil has become popular due to the availability of durable strong geosynthetic materials. In this papers, through the laboratory model tests on sandy ground reinforced by mats about the strip footing under plane strain condition, the effects of bearing capacity improvement and behaviour of sandy ground were observed. And bearing capacities calculated by proposed method and measured by tests were compared.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2002.05a
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• pp.81-84
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• 2002

Recently Bentonite mat is applied various structure : External waterproofing for underground structure, A reclaimed land, Artificial lake, Large-scaled civil structure, etc. With these various structure environment, water quality for application of Bentonite Mat affects watertightness. Specially spot with a large quantity of Chloride ion like salt water, degree of watertightness revelation is evaluated and applied. In this study, it is a main goal to investigate watertightness of Bentonite Mat with distilled water and salt water dissolved chloride ion Contents 0.88%. The result of this paper is as follows. 1) Water permeability coefficient of Bentonite Mat : distilled water(1.21$\times$10$^{-9}$cm/sec), salt water(3.12$\times$10$^{-7}$cm/sec). 2) Variation of thickness : distilled water(187%), salt water(108%). 3) Swelling ratio : distilled water(1500%), salt water(350%).