• The Journal of the Korea institute of electronic communication sciences
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• v.16 no.2
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• pp.385-394
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• 2021

In this paper, a new equation of electromagnetic wave transmission matrix was proposed to calculate the reflected power and transmitted power for the multi-layered planar lossy structure. The applied human leg was modeled as a four-layer planar structure of skin, fat, muscle and bone. The complex dielectric constant to consider the loss of each of these layers was calculated using the 4-pole cole-cole model parameter. When electromagnetic waves were incident on the skin surface, total reflected and transmitted power, and human body loss were calculated for a frequency band of 0.1 to 20.0 GHz. And for various muscle thicknesses, the power reflected only from the outermost bone and re-radiated from the skin was calculated. It was confirmed that at the muscle thickness of 3.0 mm and the frequency of 4.6 GHz the return loss was -6.13 dB, which was 3.42 dB lower than the average value.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2010.10a
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• pp.469-470
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• 2010

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2012.05a
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• pp.1175-1176
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• 2012

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2000.11a
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• pp.140-145
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• 2000

BTX는 석유화학곧업에서 생산되는 방향족탄화수소 화합물의 주요 생산품목인 Benzene, Toluene, Xylene을 일컫는 말로서 석유화학공정에서 간단히 줄여서 쓰는 용어이다. 벤젠, 톨루엔, 크실렌 등은 페인트 희석제로 쓰이는 유기용매의 주성분들이며, 인체에 중독성을 나타내는 유해물질이기도 하며 소방법상에서는 인화성액체인 4류 위험물로 취급하고 있다.(중략)

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2010.05a
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• pp.1367-1368
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• 2010

• Proceedings of the Optical Society of Korea Conference
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• 2007.07a
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• pp.37-38
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• 2007

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2010.05a
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• pp.774-775
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• 2010

• Proceedings of the Korean Fiber Society Conference
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• 1998.10a
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• pp.227-231
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• 1998

Poly(lactic acid)(PLA)는 인체내에서 재흡수성(resorbability), 분해물의 비독성, 성형물의 높은 기계적 강도 등과 같은 바람직한 특성을 가지는 생체 친화성 고분자로서 fracture fixation devices, drug delivery system 및 surgical suture 등과 같은 의료용 소재로의 응용에 관한 연구가 활발히 진행되고 있다[1-2]. (중략)

• Journal of Korea Society of Industrial Information Systems
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• v.3 no.1
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• pp.93-100
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• 1998

인력운반작업(Manual Materials Handling)에 의해 초래되는 요통의 발생을 줄이기 위해서 작업설계부터 작업부하량에 영향을 미치는 요인들에 대한 과학적이고 체계적인 고려가 이루어진 분석방법이 도입되어야 할 필요성이 크다고 하겠으며 이를위하여 우선 최대근력의 측정과 평가가 선행되어야만 될 것이다. 따라서 신체적인 특성과 각 근력의 상호관계가 분석·고찰되었으며 최대근력을 실험적으로 측정하여 평가하였다.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2013.10a
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• pp.174-175
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• 2013