• 한국주거학회:학술대회논문집
• /
• 한국주거학회 2011년도 춘계학술발표대회 논문집
• /
• pp.290-295
• /
• 2011

The purpose of this paper was to study on the attitudes about Reverse-Mortgage among Baby Boomers to offer the basis for revitalization of Reverse-Mortgage. Social survey research using a questionnaire was conducted among the babyboomer's living in Seoul area from September $30^{th}$ to October $14^{th}$. The data from 102 respondents were analyzed using SPSS PASW 18.0. The main findings were as followings 1) although 64% of the respondents prefered to type which could withdraw temporary cash, but main factor that affected the use was a stability in one's old age 2) 72% of respondents thought adequate age for application was over 66. So lowering the qualification of age looked not need for revitalization 3) babyboomer's said that they would use reverse-mortgage if they couldn't get benefit from other pension inspite of getting lower recognition on house inheritance. It was be cause they regarded Reverse-Mortgage as a final step. In conclusion, current qualification and limit for withdraw looks adequate but it need public relations about its merit unlike other pension. And it has to emphasize its stability so that baby boomer can feel easy from holding a mortgage on their house.

• 해양환경안전학회:학술대회논문집
• /
• 해양환경안전학회 2006년도 추계학술발표회
• /
• pp.137-141
• /
• 2006

선박용 디지털 컴퍼스를 사용하는 경우 선박의 진방위를 획득하기 위해서는 고정밀도의 자차와 편차가 필요하다. 편차는 지구자장의 주 자장과 경년변화에 대한 구면 지구 조화 모델을 이용한 WMM(World Magnetic Model)으로 예측 가능하였고, 자차는 포아송 방정식을 적용한 자차계수 합성과 분석 방법을 적용한 방법을 이용하여 획득 가능하였다. 실습선 '새누리호' 항해 중 디지털 컴퍼스에 편차와 자차를 가해준 결 과 정확한 진방위 획득이 가능하였다.

• 대한원격탐사학회:학술대회논문집
• /
• 대한원격탐사학회 2006년도 Proceedings of ISRS 2006 PORSEC Volume I
• /
• pp.324-327
• /
• 2006

This research is about the optical characteristic of red tide which is collected from Nam-Hae for basic research of red tide remote sensing technique development. 21 kinds of red tide organisms are cultivated to investigate optical characteristic of them on the level of laboratory, and chlorophyll specific absorption coefficient($a^*$) and backscattering coefficient($b_b^*$) are estimated by using spectrophotometer. Absorption spectrums according to species are appeared diversely from 0.005 to 0.06 (mg/ $m^2$), and the shapes of spectrums are also different. The range of $b_b^*$ are appeared $10^{-2}{\sim}10^{-4}$ mg/ $m^2$, which have around 100 times differences between species, and the shape of spectrum also have significant difference between species. These results are able to use as an input data of inverse model from ocean color.

• 대한원격탐사학회:학술대회논문집
• /
• 대한원격탐사학회 2007년도 춘계학술대회 논문집
• /
• pp.183-187
• /
• 2007

적조원격탐사의 기초연구로서 적조생물의 광학적 특성을 조사하였다. 연구에 사용된 적조생물 종은 와편모조류에 속하는 종으로 Scrippsiella trochoidea이다. 광학적 특성 조사를 위해 순수 배양된 생물종을 미세조류은행(KMCC)에서 구입하여 배양하였다. 배양된 샘플로 chlorophyll 농도, 홉광계수(absorption coefficient, a), 소산계수 (attenuation coefficient, c), 역산란계수(backscattering coefficient, $b_b$), 입자크기분포(size distribution, Fd)를 측정하였다. 본 연구의 결과는 2000년 적조 생물종 원격탐사 기술개발 보고서의 결과와 비교해 보았으며, 홉광계수 측정방법에 있어서 filter technique과 부유상태에서 측정한 결과를 비교하였다. 홉광계수에 있어서 기존연구와 본연구의 결과는 매우 유사한 홉광 스펙트럼올 나타내었으며，filter technique와 부유상태에서 측정한 홉광도는 filter technique를 이용한 것이 높은 값을 나타내었다. 이는 multiple absorption, 즉 ${\beta}-effect$에의한 것으로 보인다. 역산란 스펙트럼은 노이즈가 많이 나타났는데 이것은 농도가 충분하지 않아서 나타난 것으로 추정된다. 적조생물의 고유광특성이 해색에 영향을 미칠것이라고 보고 이들 결과는 해색을 재현하기 위한 해색모텔의 입력변수로 활용될 수 있다.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2004년도 하계학술대회 논문집 A
• /
• pp.113-116
• /
• 2004

Many methods to examine the vulnerable areal for the contingencies in the power system. The most widely used index for the vulnerable area investigation has been the reactive power margin or sensitivity analysis. But we can get the results of these analyses if only the results of load flow are convergent in severe contingencies, otherwise these methods are not adoptable. We can present a good index for overcoming severe contingencies, if we can get the vulnerable areas by bus sensitivity in severe contingencies, though the power flow equation is unsolvable. This paper simulates unsolvable severe contingencies by using branch parameter continuation power flow. We can compute the vulnerable areas in unsolvable severe contingencies by normal vector at a nose point of a $\nu-V$ curve. Presented method is checked the input reactive power of the vulnerable areas in KEPCO system.

• 대한설비공학회:학술대회논문집
• /
• 대한설비공학회 2008년도 하계학술발표대회 논문집
• /
• pp.395-401
• /
• 2008

Since metallic foam will increase the performance of heat exchanger, it have caused many researcher's attention recently. Our research base on the model that metallic foams applied to heat exchanger. In this case, there is three kind of heat transfer mechanisms, heat conduction in fibers, heat transfer by conduction in fluid phase, and internal heat change between solid and fluid phases. In this paper we study both the hydraulic and thermal aspect performance. Pressure drop along air flow direction will be presented. As thermal aspect, we first discuss the acceptance of applying thermal equilibrium among the two phases. then to calculate the dimensionless temperature profile, the heat transfer coefficient and Nu number in 14 metallic foams(7 Aluminium foams, 7 FeCrAlY foams). All these discussion is based on the same velocity u=2 m/s.

• Journal of Ginseng Research
• /
• 제34권1호
• /
• pp.68-75
• /
• 2010

This study sought to optimize the extraction and enzymatic treatment conditions of Panax ginseng leaves, stems, and roots for the production of fermented ginseng. The optimization enhanced the extraction of total saccharide, a nutrient and growth-activating factor for Lactobacillus bacteria. The hydrolysis of ginseng leaves, stems, and roots was tested with eight enzymes (Pentopan, Promozyme, Celluclast, Ultraflo, Pectinex, Ceremix, Viscozyme, and Tunicase). The enzymatic hydrolysis conditions were statistically optimized by the experimental design. Optimal particle size of ginseng raw material was <0.15 mm, and optimal hydrolysis occurred at a pH of 5.0-5.5, a reaction temperature of 55-$60^{\circ}C$, a Ceremix concentration of 1%, and a reaction time of 2 hr. Ceremix produced the highest dry matter yield and total saccharide extraction. Ginseng leaves were found to be the most suitable raw material for the production of fermented ginseng because they have higher carbohydrate and crude saponin contents than ginseng roots.

• 한국항해항만학회지
• /
• 제30권5호
• /
• pp.321-329
• /
• 2006

이 연구의 최종목적은 기존의 선박용 자기 컴퍼스를 대체할 수 있는 디지털 컴퍼스 개발에 있다. 우선, 3축의 고정밀 프럭스-게이트센서와 소형 스텝 모터를 이용하여 새로운 디지털 컴퍼스 장치를 개발하였다. 그리고 기존 자차측정 방법과 달리 선박의 선회 없이 자동으로 자차의 분석과 수정이 가능하도록 기존 자차이론에 칼만필터 개념을 접목시킨 새로운 자차수정 이론을 제안하였다. 개발한 디지털 컴퍼스와 제안한 자차수정 방법의 유효성을 실습선 '새누리호'를 이용한 성능평가 실험을 통하여 유효성을 검증하였다.

• 한국항해항만학회:학술대회논문집
• /
• 한국항해항만학회 2006년도 춘계학술대회 및 창립 30주년 심포지엄(논문집)
• /
• pp.77-85
• /
• 2006

이 연구의 최종목적은 기존의 선박용 자기 컴퍼스를 대체할 수 있는 디지털 컴퍼스 개발에 있다. 우선, 3축의 고정밀 프럭스-게이트 센서와 소형 스텝 모터를 이용하여 새로운 디지털 컴퍼스 장치를 개발하였다. 그리고 기존 자차측정 방법과 달리 선박의 선회 없이 자동으로 자차를 분석하고 수정하며 갱신할 수 있는 자차수정 이론을 제안하였다. 실습선 '새누리호'를 이용한 성능평가 실험을 통하여 개발한 디지털 컴퍼스와 제안한 자차수정 방법의 유효성을 검증하였다.

• 한국식품영양학회지
• /
• 제34권3호
• /
• pp.302-309
• /
• 2021

This study examined the quality characteristics of yanggaeng with rice germ; it was incorporated into yanggaeng at different levels (containing 5% rice germ, 10% rice germ, 15% rice germ, and 20% rice germ) based on the total weight of red bean extracts. For analyzing the quality characteristics of yanggaeng, moisture content, hardness, color, antioxidant activity, total polyphenol content, reducing sugar, and vitamin E were determined. There was no significant difference in the moisture content and hardness except in the control. For color, lightness and yellowness of yanggaeng increased as the concentration of the powder was increased, whereas there was no significant difference in redness. As the rice germ powder was increased, total polyphenol content and antioxidant activity increased significantly, whereas reducing sugar decreased. Especially, total vitamin E, including isomers, increased as the concentration of the powder increased from 0.41 mg/100 g to 4.03 mg/100 g. Therefore, it could be possible to develop processed products with functional snack for yanggaeng prepared by adding 10% rice germ.