• 호남수학학술지
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• 제38권2호
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• pp.385-391
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• 2016

We consider Jacobi filds as the first derivatives for ${\varepsilon}$, the energy of harmonic extensions, in a given manifold. In this paper we see that the Jacobi fild is bounded by the given boundary map. Here we give no restriction concerned with the curvature for the given manifold.

• 한국환경생태학회지
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• 제9권2호
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• pp.202-210
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• 1996

오대산 국립공원의 주연부 수종 및 식생구조를 밝히기 위하여 1995년 7월 1일-4일에 현지조사를 실시한 결과는 당므과 같다. 오대산 곡간부에 위치한 삼림주연부의 종구성은 삼림내부와 상이하였다. 종다양도, 종수, 수관피도 및 개체수는 주연부에서 임내로 갈수록 감소하였다. 병꽃나무는 온대기후대 전역의 주연부에서 경쟁력이 우수한 수종으로 나타났으며, 오대산 국립공원에서만 출현한 주연부 수종은 조회풀과 산조팝나무이었다.

• Journal of Mechanical Science and Technology
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• 제17권12호
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• pp.1949-1960
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• 2003

This paper presents vibration and noise control of flexible structures using squeeze mode electro-rheological mounts. After verifying that the damping force of the ER mount can be controlled by the intensity of the electric fild, two different types of ER squeeze mounts have been devised. Firstly, a small size ER mount to support 3 kg is manufactured and applied to the frame structure to control the vibration. An optimal controller which consists of the velocity and the transmitted force feedback signals is designed and implemented to attenuate both the vibration and the transmitted forces. Secondly, a large size of ER mount to support 200 kg is devised and applied to the shell structure to reduce the radiated noise. Dynamic modeling and controller design are undertaken in order to evaluate noise control performance as well as isolation performance of the transmitted force. The radiated noise from the cylindrical shell is calculated by SYSNOISE using forces which are transmitted to the cylindrical shell through two-stage mounting system.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1987년도 정기총회 및 창립40주년기념 학술대회 학회본부
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• pp.449-453
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• 1987

This paper presents the detecting algorithm of inrush current which causes protective equipment to maloperate in energizing a power distribution line. This detecting algorithm uses the method which extracts the decay component and energy of 2nd harmonics by Prony Spectral Estimation Method existed AR model to new ARMA model. In this paper, the inrush currents are obtained by model simulations and fild tests. By applying these data to the detecting algorithm, it has been confirmed to discriminate inrush currents from fault currents.

• 한국표면공학회지
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• 제21권1호
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• pp.3-9
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• 1988

An electroless plating both for normal orientation of HCP-structure of Co-P to the film plane was developed. An ammonical succinate-citrate bath containg MnSo4, NiSO4 was studied Ni was codeposited into the films in order to decrease the saturation magentization (MS) since low Ms is necessary to decrease the magentizing fild. Mn was also codeposited to increase perpendicular orentaon of Co-P film. Effects on film composition and magnetic properties were studid in connection with follwing four factors such as concentration of NiSo4 and MnSo4, bath temp and pH.

• Journal of Magnetics
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• 제11권4호
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• pp.167-169
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• 2006

Nanocrystalline CoFeHfO thin films have been fabricated by RF sputtering method. It is shown that the CoFeHfO thin films possess not only high electrical resistivity but also large saturation magnetization and anisotropy field. Among the composition investigated, $Co_{53}FE_{22}Hf_{10}O_{15}$ thin film is observed to exhibit good soft magnetic properties: coercivity ($H_{c}$) of 0.18 Oe; anisotropy fild ($H_{k}$) of 49.92 Oe; saturation magnetization ($4{\Pi}M_{s}$) of 15.5 kG. The frequency response of permeability of the film is excellent. The excellent magnetic properties of this film in addition of an extremely high electrical resistivity (r) of $185\;{\mu}cm$ make it ideal for uses in high-frequency applications of micromagnetic devices. It is the formation of a peculiar microstructure that resulted in the superior properties of this film.

• 복식
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• 제38권
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• pp.101-122
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• 1998

The purpose of this study is to define the fundamentals of one symbolic concept, so calles vestment-sign, based on the logical relationship of sign system about the trichotomy by charles S. Peice's sign concept for the communication system of meaning in the non-linguistic image domain. To prove the argument of vestment-sign, I selected 3 type of vestment language by styliste, Elsa Schiaparel-li. The third image vestmental chosen here, titled“Larme-Illusion(1938)”,printed by Salvad-or Dali will produce one symbolic proposition as a logical result which is generated and developed through the interpretation of other images. First of all the text, which is manifested by Elsa Schiaparelli's first image vestmental, tit-led“Notation Musical(1937)”and is symbolized as one category in the representation of the form, is regarded symbolic and metaphorical from a standpoint that the title and the meaning is connected to the form. The second image vestment, titled“Ruches Noirs(1938)”represents externally splendid feminity man-ifested by the symbolic and metaphorical expression. And the purity of sensitivity aiming to humanity in the detail of the poetic feeling of naturalism makes us imagine the battle fild of furious sensitivity. Like as the result of the battle, the third image stimulated our eyesight with the“absence”of dressing function. The proposition of the text,《Death》which the third image delivers, constructs sign system to bring up a meaning with the disappearance of physical“signifier”. This establishment of the symbolic concept presents the etymological authority of symbol generation called“Design”.

• Journal of Preventive Medicine and Public Health
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• 제6권1호
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• pp.65-70
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• 1973

The study in the fild of medical instrument has been out of the interest by any of the life scientist in Korea. Especially, the recent developments in the medical electromics are remarkable one. Authors planned this study to ascertain the possibility of setting up the thermister thermometer with available accessories of demestic prouducts including some specific foreign assembly parts. By proper use of the thermister as one of the wheatstone bridge, we could detect tile resistance variations due to the environmental temperature variace. The intensive care for the bridge circuit and compensation scheme was required. The calibration procedure adopted here makes it possible to read the current as the temperature. The temperature range was determined by the examination and construction of the graph of the resistance-temperature variation. The determination of electric current, available ambient-temperature, the reduction of excessive current and self-heating of the thermister were made. Renovation in response-velocity was under taken too. This electronic thermometer was designed and assembled by the circuitry developed in accordance with the maximum availability of domestic products with some foreign-made parts. The result of our experiment showed very stable function and proved to be the most promissing item in the actual application as long as the thermistor thermister is concerned.

• 한국자기학회지
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• 제2권2호
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• pp.156-162
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• 1992

저자장방법으로 양성자 자기회전비율을 측정할 때, 지자장을 상쇄시켜 무자장 실험공간을 형성시킬 필요가 있다. 이를 위해 일정한 자장성분은 헬름홀쯔코일에 흐르는 정전류에 의하여 상쇄 되고, 미소변화 자장은 폐회로를 구성하는 궤환장치에 의해 자동적으로 상쇄되는 지자장 상쇄장치 를 설계하였다. 지자장성분을 상쇄하기 위해 코일상수가 같은 대형 및 소형 3축 헬름홀쯔코일과 미 소변화 자장 상쇄용 궤환증폭기를 제작하였다. 제작된 시스템을 사용하여 일반실험실 내에서 예비 실험을 한 결과 수십 ${\mu}T$ 의 일정한 자장성분과 ${\pm}100nT$ 의 미소변화 자장을 상쇄하여 잔류자 장이 ${\pm}10nT$ 이하인 공간을 형성하였다.

• 디지털융복합연구
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• 제12권1호
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• pp.531-537
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• 2014

패션스타일리스트의 분야와 역할중 패션 분야가 확대되어지면서 더욱 감각적이고 세련되며 특별한 것을 요구하는 시점에 이들이 각 분야마다 다양한 역할을 수행하고 있는 전문가로서 시대적 흐름에 부응하여 패션산업을 한걸음 발전시키는 단계에 이르게 하였다는 견해이다. 패션스타일리스트의 역할은, 매체를 통한 배역의 성격에 따라 이미지 스타일이 가능하도록 분위기에 맞는 패션 이미지를 연출하고 모델을 통해 특정 이미지를 형성시켜 수용자 내면의 흥미, 욕망을 유발시켜 상품의 인지도와 광고에 대한 기여도를 높이고 구매 행동을 촉진시키는 역할을 해야 한다. 또한 패션 테마나 컨셉에 맞춰 패션화보내의 모델에게 의상과 헤어 메이크업등의 스타일을 연출하고 빠른 트렌드를 읽기 위해서 패션에 대한 예리한 통찰력, 패션감각과 센스, 분석력, 기획력이 우선시 되어야 한다는 것이다. 본 연구는 최근 급부상하고 있는 패션스타일리스트의 분야와 역할을 살펴보고 직업적 전문성 확보와 소비자의 패션감각을 높여주는 요소로서 시대의 고성장 부가가치의 산업과 패션 전문 분야로의 활성화와 도약을 기대해 볼 수 있겠다.