• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2005년도 추계종합학술대회
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• pp.906-910
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• 2005

본 논문에서는 이미 표준화 된 휘도에서 고 휘도를 향상을 시키기 위해서 휘도 향상에 직접영향을 미치는 실험모델을 제안 하였다. 국산램프(K社)와 일본램프의 제품에서 ${\phi}$2.6램프보다 ${\phi}$l.6램프을 사용함으로 세경화에 따라 200[cd/m$^2$]정도 휘도가 향상됨을 알 수 있었다. 기존에 BLU상에서는 LCD Panel을 장착하면 그 휘도는 초기램프 보다 약 1/100 - 1/200정도로 낮아진다. 시트 Variation에 따른 비교분석을 한 결과 시트 구성인 'LCP + DIFFUSER + BEF II(H) + BEFII(V)' 구성이 가장 고휘도 분포가 나타나는 것을 알 수 있으며, 고 휘도 구현을 하기위한 효율적인 구성 기준을 제안하였다.

• 한국실내디자인학회논문집
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• 제17권3호
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• pp.68-76
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• 2008

This study investigated composition elements and estimation of image in lobby from user viewpoint that is the central space of local cultural institution, and spectator mainly utilizes. Progress process of study develops investigation device including literature investigation, professional panel and lobby space image measurement tool through on-the-spot probe and, executed supporting research to spectator. As the result of the study, first, lobby space image exerts absolute effect to local cultural institution image-building, and is grasped on constituent that floor, ceiling, entrance and lighting and decoration is important in image-building of lobby space. Second, the image of the important lobby space was grasped in order of convenient image(M = 3.98) bright image(M = 3.87), and cozy image(M = 3.80). Third, the results on investigating semantic structure of the lobby image, emotional factor, styling factor, spatial factor, and peculiar factor are composed of important factors that decides image of lobby space. Fourth, as the result of image analysis for lobby space, the degree of satisfaction for the local cultural institution was entirely low against the importance. In particular, the image for convenience, individuality, locality and dignity was not sufficient in all the three places. Therefore, lobby design of local cultural institution shall also suggest more various lobby space image from culture oriented viewpoint.

• 한국실내디자인학회논문집
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• 제19권2호
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• pp.144-154
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• 2010

This study aimed at analyzing physical characteristics of art-walls which is a focal point in contemporary interiors of the apartment houses. The factors for the analysis were types of apartments, positions, widths, compositions of elevation, and materials of art-walls. 89 art-walls were selected for the analysis ranging from $76m^2$ to $187m^2$. The result shows that wood was mostly applied to art-walls in small types of apartment in combination with other materials, and the composition of elevation was asymmetric. If the width of art-walls became smaller, the elevation was dominantly designed with symmetrical grid using tiles. Tiles turned out to be the general material for the single-applied material. However, if more than two materials were applied to art-walls, wood was chosen as the main material. Regardless of the types of apartment, big-sized art-walls were usually designed in the living room, and two different types of materials were applied to the walls. It reveals that art-walls of apartment houses have been planned and designed with focuses on the living room in the housing space. To make a modular panel for the art-walls, 400mm and 800mm sizes were both suggested, 400mm for the smaller composition, and 800mm for the larger composition of the art-walls. A Wall image is becoming more essential to the living space these days, because it can be both decorative and also supportive to residents' various individualities. Therefore, it is expected that further researches on art-walls are continuously performed, and also various designs of art-walls based on the modular system are developed in the near future.

• Asian-Australasian Journal of Animal Sciences
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• 제28권8호
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• pp.1209-1215
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• 2015

Since lamb is a commodity, producers cannot control the price of the product they sell. Therefore, managing production costs is a necessity. We explored the study of elasticities as a tool for basing decision-making in sheep production, and aimed at investigating the composition and elasticities of lamb production costs, and their influence on the performance of the activity. A representative sheep production farm, designed in a panel meeting, was the base for calculation of lamb production cost. We then performed studies of: i) costs composition, and ii) cost elasticities for prices of inputs and for zootechnical indicators. Variable costs represented 64.15% of total cost, while 21.66% were represented by operational fixed costs, and 14.19% by the income of the factors. As for elasticities to input prices, the opportunity cost of land was the item to which production cost was more sensitive: a 1% increase in its price would cause a 0.2666% increase in lamb cost. Meanwhile, the impact of increasing any technical indicator was significantly higher than the impact of rising input prices. A 1% increase in weight at slaughter, for example, would reduce total cost in 0.91%. The greatest obstacle to economic viability of sheep production under the observed conditions is low technical efficiency. Increased production costs are more related to deficient zootechnical indexes than to high expenses.

• 한국진공학회지
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• 제8권1호
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• pp.70-74
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• 1999

Plasma Display Panel(PDP)에서 보호막 물질로 사용중인 MgO 특성을 개선하기 위하여 본 연구에서는 MgO-CaO 박막을 전자빔 증착법으로 제조하였다. MgO 최대 증착속도는 1025 $\AA$/min이었으며 CaO 첨가비가 증가함에 따라 증착속도는 감소하였고, XRD 패턴은 전체적으로 낮은 2$\theta$각 방향으로 이동하였다. MgO 대한 CaO의 최대 고용도는 0.13이다. 최적전압특성을 나타낸 조성은 Mg 47.1 at%, Ca 1.3 at%, O 51.6 at%이었으며 이때 방전개시전압은 176 V, 메모리마진은 0.5였으며 증착속도는 515$\AA$/min이었다.

• 한국식품영양과학회지
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• 제11권4호
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• pp.1-6
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• 1982

식생활(食生活)에 많이 이용(利用)되고 있는 자건(煮乾)멸치국물에 대한 조리시간(調理時間)의 조건(條件)을 밝힐 목적(目的)으로 멸치국물을 우러내는데 많이 사용되고 있는 자건(煮乾)멸치중 대멸과 중멸을 원료(原料)로 하여 조리시간(調理時間)에 따른 국물중의 유리(遊離)아미노산(酸), 그리고 칼슘과 철에 대한 용출량(溶出量)을 실험(實驗)하였다. 대멸과 중멸 원료(原料)의 유리(遊離)아미노산(酸)의 함량차이(含量差異)는 다소 있었으나 함량(含量)이 높은 순(順)은 histidine, alanine, lysine, leucine, glycine, glutamic acid이며 전유리(全遊離)아미노산(酸)의 $67.1%{\sim}76.6%$를 차지하였다. 조리시간별(調理時間別) 유리(遊離)아미노산(酸)의 용출량(溶出量)은 10분간(分間)보다 30분간(分間)의 용출량(溶出量)이 많았고 많이 용출(溶出)되는 유리(遊離)아미노산(酸)은 histidine, alanine, lysine, leucine, glycine 및 glutamic acid로써 이들 유리(遊離)아미노산(酸)이 국물의 풍미(風味)에 중요(重要)한 구실을 할 것이라고 보아진다. 칼슘과 철은 대멸과 중멸간에 함량차이(含量差異)는 거의 없으며 조리시간별(調理時間別) 용출량(溶出量)은 10분간(分間)이 가장 낮았으며, 30분간(分間)과 40분간(分間)에는 차이(差異)가 거의 없으므로 이들 조리시간(調理時間)은 30분간(分間)이 가장 좋았다.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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• pp.1095-1098
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• 2004

In this study, $Bi_2O_3-B_2O_3-ZnO$ glass system, which was expected to have similar properties with PbO containing glass system, was selected as a PbO replaceable potential composition because the atomic weight and ionic radius of Bi is similar to those of Pb. Glasses with different modifier/former ratio were prepared by melting the raw ingredient mixtures in $Bi_2O_3-B_2O_3-ZnO$ system, and the thermal and electrical properties of the sintered samples were examined. The glass transition temperatures and the dielectric constant of the glass pellets were between 350 $^{\circ}C{\sim}$500 $^{\circ}C$ and 15-35, respectively.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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• pp.33-38
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• 2006

An evolutionary optimization process involving genetic algorithm and combinatorial chemistry was employed in an attempt to develop titanate-based red phosphors suitable for tri-color white light emitting diodes We screened a eight-cation oxide system including $(K,Li,Na)_x(Y,Gd,La,Eu)_yTi_zO_{\delta}$ in terms of luminescent efficiency. The combination of genetic algorithm and combinatorial chemistry was proven to enhance the searching efficiency when applied for phosphor screening. As a result, the composition was optimized to be $(Na_{0.92}Li_{0.08})(Y_{0.8}Gd_{0.2})TiO_4:Eu^{3+}$, The luminance of this phosphor was 110 % of that of well-known scheelite variant phosphor at an excitation of 400 nm.

• Transactions on Electrical and Electronic Materials
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• 제8권3호
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• pp.121-124
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• 2007

The $Zn_2SiO_4:Mn$ phosphors were prepared using polymer matrix technique in order to improve the performance of green emitting phosphors for plasma display panel(PDP). $Zn_2SiO_4:Mn$ phosphor exhibits a strong green emission around 520-530 nm. The emission intensity and particle size of powders were controlled by sintering temperature and raw material composition. The zinc silicate $Zn_2SiO_4:Mn$ single phase were obtained at lower temperature than prepared by solid-state reaction method. PL luminance of $Zn_2SiO_4:Mn$ phosphor was similar to the commercial material.

• Agribusiness and Information Management
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• 제5권2호
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• pp.1-5
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• 2013

Demographic transition drives changes in consumer demand for food products. This study examines how rising incomes and population trends affect spending on food purchased for home. The objective of this study is to characterize the relationships between selected socio-demographic factors and food selection among South Korean households. Panel data from Rural Development Administration (RDA) in South Korea in 2010 was used (n=971). Household food purchases were classified into one of the five food groups from Composition of Foods of RDA. Multiple regression analysis was used to analyze the effects of household size and income based on the expenditure share on each food group. All statistical analyses were performed using SAS/ PC version 9.3. Results show that household socio- demographic characteristics have a strong influence on food purchasing, with the purchase of vegetables and fruit, and processed food and pre-packaged being particularly sensitive.