• Proceedings of the Plant Resources Society of Korea Conference
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• 2018.04a
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• pp.39-39
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• 2018

지금까지 통조화(Stachyurus praecox)는 일본특산식물로 알려져 있으며, 일부 수목원 식물원에서만 식재된 국내 미기록종이다. 본 조사에서는 전남 완도군 생일면 일대 무인섬에서 통조화 자생지를 최초 발견하였다. 이 일대 해발고 50m 이하의 지점에서 불규칙적으로 최대 H8.0m, R24cm 등 150여 개체 이상 분포하는 것으로 확인되었다. 조사지 식생의 교목층은 생달나무(Cinnamomum japonicum), 아교목층은 통조화(Stachyurus praecox), 관목층은 참식나무(Neolitsea sericea), 초본층은 두루미천남성(Arisaema heterophyllum)이 우점하고 있었다. 국내에서는 통조화(Stachyurus praecox)에 대한 기초자료가 부족하여 그간 암수딴그루, 낙엽활엽관목으로 여겨왔다. 그러나 이번 자생지 발견을 통해 암꽃만 있는 단성화 개체뿐만 아니라 암술과 수술이 함께 있는 양성화 개체가 더 많이 자생하고 있는 것으로 조사되었다. 또한, 단성화(암꽃)에서만 전년도에 결실한 종자가 달려있다는 점과, 양성화에서는 화기의 탈락이 빈번하고 수정된 개체를 발견할 수 없었던 점으로 보아 이 지역에서 자생하는 통조화는 암꽃양성화딴그루로 사료된다. 향후, 이 지역 통조화의 정확한 동정을 위해 동일한 속의 유사분류군과의 유연관계를 비교하고, 관찰 및 조사가 필요하다.

• Venture DIGEST
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• s.101
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• pp.34-34
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• 2006

삼국지에서 제갈공명은 "나라를 부강하게 만들려면 국민을 교육해야 하고, 교육을 바로 하기 위해서는 사제지관계를 바로 해야 한다"고 말했다. 관계라는 것은 사람을 다루는 모든 사람들에게 요청되는 핵심이다. 사회가 건강하기 위해서는 각 구성요소가 상호 연관할 수 있는 관계적 합리성을 통해서 균형과 조화를 이루어야 한다. '나'라는 존재가 '너'와 소통하지 못하고 또 기업이 사회와도 소통하지 못한다면, 자기중심적이고 자폐적으로 되어간다면 결국 병들기 마련이다. 육체적 건강이든 정신적 건강이든 혹은 사회적 건강이든 관건은 '통'과 '불통'의 문제로 압축된다.

• The Science & Technology
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• v.31 no.5 s.348
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• pp.32-34
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• 1998

10년 전의 일이다 .그해 미국유럽 남미 등 전세계 학자들의 연구논문 좀 보내달라는 편지를 1백여통이나 받았다. 논문제목은「강제감쇄조화진동자로」 J.Phys.A2월호에 게재되었는데 박사과정의 제자와 함께 4년의 노력끝에 얻어낸 결실이었다. 제자의 박사학위논문으로 발표되니 이 원고덕에 소련과 국교정상화 후 한국의 물리학자중 최초로 모스크바를 방문하는 계기가 마련되었고 소련에서 3주동안 융숭한 대접을 받았다.

• Proceedings of the KIEE Conference
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• 2005.05b
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• pp.64-66
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• 2005

대규모 택지지역등에 전력을 공급하기 위하서는 정확한 수요예측과 이에 따른 배전선로 통구성, 설계, 시공, 공사관리 등의 복합적인 업무가 수반된다. 대부분의 택지개발지역은 환경의 조화를 위하여 지중배전설비로 구축하는 것이 일반적이다. 택지개발지역내 배전설비 구축은 새로운 도화지에 그림을 그려야 함으로 10년 앞을 내다보는 안목으로 시행하여야 할 것이며 이에 택지개발지역의 지중배전설비 구축시의 설계 및 시공시의 착안사항에 대하여 기술하였다.

• Journal of KSNVE
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• v.10 no.4
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• pp.642-647
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• 2000

Conventional cepstrum has been widely used to detect echo and fault signals embedded in noise. One of the problems of finding impulse signals using the conventional cepstrum in that it is normally very sensitive to signal to noise ratio (SNR). This paper proposes a signal processing method to detect impulse signal in noisy environment. Because the proposed method minimizes the variance of signal power at a cepstrum domain, it is suggested to be called as minimum variance cepstrum (MV cepstrum). Computer simulations have been performed to understand the characteristics of the MV cepstrum. Both mathematical approach and computer simulations confirmed that the MV cepstrum is a useful technique to detect impulse in noisy environment.

• Journal of the Korean Home Economics Association
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• v.11 no.4
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• pp.424-435
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• 1973

This paper attempts to find out the development of designs of chairs in interiors. It will discussed by dividing into two periods; the pre-world war I, and the post-world war I up to date. In the first part it will concentrate on four types of design materjals; plywood, metal, solid wood, and plastic chairs. In the second part it will deal with only two materials; Metal and solid wood. Under each material one designer and manufacturer, the country where the designer worked, and related dates. It will discuss how the design materiai was exploited by each designer within its potentials including how chair was made, what design elements could do, whether he used the potentials, and the potentials were fully exploited. And it discusses the success of the chair design material as shown in the interiors or failure of the chair design material. Fainally under each material one picture of chairs, one or two pictures for the chairs in the interiors, of the chairs will be provided. A bibliography will be attached to the end of the paper.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.35 no.12
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• pp.1293-1300
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• 2011

The configurations of the evaporator and condenser of a water chiller can be determined from the trade-off between the heat transfer area, which is related to the capital cost and the pressure drop, which is associated with the operational cost. In this study, the design of the water chiller focused on minimizing the water pressure drop of both condenser and evaporator for given cooling capacity and requirements. Commercial enhanced tubes were employed to simulate real-life conditions. The results of the present analysis were compared with those obtained by HTRI software for verifying them. The results indicated that a reduction in the water pressure drop, which is associated with the short length of a tube, can be effected by decreasing the number of tube passes and increasing the number of tubes and the tube diameter. However, using a large number of tubes with smaller diameters can reduce the capital cost because the tubes are short. The reduction of the capital cost is due to the fact that a small-diameter tube has low internal thermal resistance and hence contributes to a decrease in the overall thermal resistance per unit length.

• Management & Information Systems Review
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• v.29 no.2
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• pp.97-118
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• 2010

This paper explores the mean and volatility spillover effects among Chinese, Korean, and the U.S. stock markets during the Asian and global financial crises. We found that, during the Asian Financial crisis, there was no mean spillover effect to the Chinese stock markets. However, there were reciprocal mean spillover effects between the U.S. and the Korean market. This implies that Korean market was open, while Chinese market was secluded from the international financial market at that time. The negative volatility spillover effect between the U.S. and China reinforces this finding. During the global financial crisis, there was reciprocal mean spillover effect between the U.S. and China, and between the U.S. and Korea. This may reflect the fact that Chinese market has opened to the international financial market. However, the volatility spillover effect does not exist between China and the U.S., while the U.S. and Korea has reciprocal volatility spillover effect to each other. These findings may imply that China is still in the process of opening her stock market to international investors.

• Journal of the Society of Naval Architects of Korea
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• v.36 no.3
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• pp.29-40
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• 1999

A numerical method in frequency domain for the analysis of the acoustic wave equation governing the sound field generated by a non-cavitating propeller under a steady of unsteady loading condition is developed. Theory shows that only multiples of the blade passage frequency exist and that the wave number consists of the frequency component due to the nonuniformity of the wake and the Doppler effect originated from the rotation of the blades. Correlation with experiments for a two bladed propeller, designed to be load-free at a particular advance speed, indicate that the thickness effect can be significant in steady case, but can be negligible compared to the unsteady loading effect.

• Journal of the military operations research society of Korea
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• v.33 no.1
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• pp.75-92
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• 2007

Most of countries in the world are stepping up military conversion to achieve military modernization. The issues of military conversion hold reallocation of financial resources, reorientation of R&D, restructuring of military industry, demobilization, base closure and relocation, scrapping of surplus weapons and so on. Also ROK is stepping up military modernization through defense reform. In particular, ROK has the plan to convert bases; transfering U.S. Forces in Korea and conducting the merger and abolition of bases. In this respect, we expect increase of base conversion easily in the future. Therefore, we tried to find the strategy of base conversion that ROK can conduct base conversion with success in this study. So that we analyze cases of base conversion which were conducted in ROK and U.S. Moreover, we extract problems of the process of base conversion in ROK and finally find out substitutes.