• 복식문화연구
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• 제13권4호
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• pp.632-645
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• 2005

The purpose of this research was to investigate the harmony evaluation and the effects used clues on harmony perception in terms of 32 tone on tone coloration of male shirt and necktie by male and female students when it comes to the coloration of male clothes shirts and necktie, after shirts matched necktie with warm and cool color, such as red, blue, and changed only value among three attributes of color. The results are as fellows. As to the red, light-dull, dull-dark was evaluated as harmonized coloration regardless of area-ratio by both male and female students. As to the blue, vivid-dark, light-dark, dull-dark was evaluated as harmonized coloration regardless of area-ratio by both male and femate students. Among 16 red tone on tone coloration stimuli, both female and male students evaluated the same 10 set as harmonized, but among 16 blue tone on tone coloration stimuli, female students evaluated 9 set, male students 12 set, so proved that male's range of harmony more extensive than that of female. It is significant difference between female and male on red dull shirt and vivid tie, blue dull shirt and dull tie combination. Females were positive to red dull shirt and vivid tie combination, males were negative, on the other hand, males were positive to blue dull shirt and dull tie combination, females were negative.

• 한국환경생태학회지
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• 제7권2호
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• pp.172-180
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• 1994

덕유산 국립공원 자연보존지구인 적상산성 일대의 삼림을 대상으로 25개 조사구(20m$\times$25m)의 식생자료를 토대로 상대우점치, 흉고 직경급 분포, 종 다양도지수, DCA 및 TWINSPAN분석을 실시하였다. 25개 조사구에서의 우점수종으로 출현한 수종은 신갈나무, 까치박달, 졸참나무, 층층나무이었고, 전체적으로는 신갈나무가 우점수종으로 생육하고 있었다. 적상산성의 식생은 4개의 식물군으로 분류되었으며, 신갈나무에서 까치박달로 천이되고 있는 천이도중상의 식생구조를 나타내었다. 무주양수발전소의 댐 건설로 인한 기상변화로 적상산성의 삼림식생은 습윤지성 음수계열의 수종으로 식생천이가 가속화될 것으로 예상된다.

• KIEAE Journal
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• 제8권5호
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• pp.49-54
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• 2008

The experimental of temperature, humidity and velocity was taken from the underground pit which utilized the system of ground heat source quite similar to the cool-pit system. Also, through CFD analysis, one could review the effectiveness of analysis of future alternatives. Furthermore, the temperature range of mock up cool-pit system was analyzed by inputting the weather data of annual average soil temperature provided by KMA(Korea Meteorological Administration) into the fluid simulation of anticipated heat distribution. Firstly, the difference between the temperature of air exhaust of the pit or the temperature of air supply of the compressor room and the experimental data for the month of May from the CFD analysis came out to be $0.6^{\circ}C$ and $0.9^{\circ}C$ respectively with tolerance of 3.1% and 4.7%. Secondly, the difference between the temperature of air exhaust of the Pit or the temperature of air supply of the compressor room and the experimental data for the month of July from the CFD analysis came out to be $0.8^{\circ}C$ and $1.1^{\circ}C$ respectively with tolerance of 3.3% and 4.5%. Thirdly, for the month of May, the difference between the experimental data taken for the air exhaust of the Pit or the air supply of the compressor room and soil temperature provided by KMA for monthly and yearly average temperature of Jeonju region came out be $1.9^{\circ}C$ and $1.8^{\circ}C$ respectively with tolerance of 10.7% and 9.8%. Fourthly, for the month of July, the difference between the experimental data taken for the air exhaust of the Pit or the air supply of the compressor room and soil temperature provided by KMA for monthly and yearly average temperature of Jeonju region came out be $1.1^{\circ}C$ and $1.4^{\circ}C$ respectively with tolerance of 4.5% and 5.8%. The result of above experiments allowed us to establish CFD model set up as a verification tool that is based on experimental data collected within the Pit area. Also, one could confirm the possibility to apply weather data of soil temperature provided by KMA in order to anticipate proper value for CFD analysis.

• 한국의류학회지
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• 제25권3호
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• pp.516-524
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• 2001

This dissertation has been intented to grasp the components of personal colors and classify personal colors. The Method of the study was quasi-experimental. In the experiment to evaluate personal colors, the subjects was 315 male and female college students in Taegu and Kyungbuk area. The evaluations were analyzed by SAS and the methods used were descriptive statistics, cluster analysis, T-test. The results obtained were as follows: First, the major components of subjects personal colors were found to be the colors of skin and hair. Secondly personal colors were classified into three types: warm, cool, and ambiguous. Third types of personal colors tended to be different between men and women.

• Journal of Mechanical Science and Technology
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• 제17권7호
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• pp.1063-1072
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• 2003

Direct immersion cooling has been considered as one of the promising methods to cool high power density chips. A fluorocarbon liquid such as FC-72, which is chemically and electrically compatible with microelectronic components, is known to be a proper coolant for direct immersion cooling. However, boiling in this dielectric fluid is characterized by its small value of the critical heat flux. In this experimental study, we tried to enhance the critical heat flux by increasing the nucleate boiling area in the heat spreader (Conductive Immersion Cooling Module). Heat nux of 2 MW/㎡ was successfully removed at the heat source temperature below 78$^{\circ}C$ in FC-72. Some modified boiling curves at high heat flux were obtained from these modules. Also, the concept of conduction path length is very important in enhancing the critical heat flux by increasing the heat spreader surface area where nucleate boiling occurs.

• 설비공학논문집
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• 제19권1호
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• pp.36-42
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• 2007

The latest cars give much importance in the role of HVAC system that controls the environment of the area for passengers more than just basic capability In this study, we drew the automobile interior as three dimension and arranged a method of numerical analysis on HVAC environment in the automobile interior displaying air current distribution and temperature distribution through simulation of the automobile interior on the ventilation volume and outlet area, The aim of this study is to develop the estimated method for HVAC environment in the automobile interior. Results of numerical analysis, to cool automobile interior needs more considerations if thinking cheerful surroundings of automobile interior air but the more magnitude of outlet is small, the more cooling capability is excellent and realistic countermeasures about a realistic geometry and boundary condition.

• Weed & Turfgrass Science
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• 제5권4호
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• pp.268-273
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• 2016

Potassium is well-known to improve turfgrass tolerance to environmental stresses such as low temperature and drought stress. Low mowing height reduces leaf area of turfgrass that is main place for photosynthesis and carbohydrate production. Closely-mowed turf would suffer from summer decline by low level of carbohydrate resulted from low photosynthesis of reduced leaf area. The objective of the study is to investigate K rate and mowing height for Kentucky bluegrass. The K rate treatments were 5, 10, and $20g\;K_2O\;m^{-2}$ for the low, medium and high K rates, respectively. The bi-weekly mowing treatment was made for treatments. Mowing was implemented at 40 and 100 mm using a rotary mower. Regardless K rates, the high mowing height would be required when the air temperature is higher than $28.5^{\circ}C$ and high turfgrass quality of Kentucky bluegrass is needed. When the air temperature is optimal for cool-season grass, the high mowing height and the low K rate is needed for the root length of Kentucky bluegrass.

• 한국조경학회지
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• 제38권3호
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• pp.107-114
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• 2010

본 연구는 한국 온대중부지역 소나무림 군락식재 모델을 제시하기 위해 충청남도 당진군 일대 소나무림을 대상으로 다양한 경급의 소나무림을 조사하였다. 유령림부터 장령림까지 총 $10{\times}10m(100m^2)$의 방형구 92개소를 설치하고, 출현개체별 규격을 모두 조사하였으며, 개체간 생육거리 분석을 위해 44개 조사구에 대해서는 1/100 scale로 교목층과 아교목층 수목의 위치를 조사하였다. 분석결과, 모든 조사구의 교목층은 양호하게 발달해 있었으나, 아교목층의 흉고단면적이 교목층의 10%에 미치지 못하고 있었으며, 관목층의 경우 일정한 피복율을 보이지 않고 조사구마다 매우 다양하였다. 이에 소나무 군락식재는 교목층과 관목층의 구조로 조성하는 것이 바람직한 것으로 판단되었으며, 관목층의 경우에는 특정 경향이 없어 식재하려는 인접 지역의 소나무림을 별도로 조사하여 적용하는 것이 바람직한 것으로 판단되었다. 군락식재 모델을 위한 소나무 교목층 흉고직경급별 단위면적당 생육개체수 및 단위면적당 생육개체수와 생육수목간 최단거리와의 회귀식은 높은 설명력을 보였다.

• Journal of Advanced Marine Engineering and Technology
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• 제33권2호
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• pp.244-251
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• 2009

Porous media have especially large surface area per volume, which contain complex fluid passage. If porous media can be applied to cool a CPU or an electronic device with large heat dissipation, it could result in heat transfer enhancement due to the enlargement of the heat transfer area and the flow disturbance. This study is aimed to identify the heat transfer and pressure drop characteristics of high-porosity metal foams in a horizontal channel. Experiment is performed with the various heat flux, velocity and pore density conditions. Permeabilities, which is deduced from Non-Darcy flow model, become lower with increasing pore density. Nusselt number also decreases with higher pore density. High pore density with same porosity case shows higher pressure loss due to the increase of surface area per unit volume. The fiction factor decreases rapidly with increase of Reynolds number in Darcy flow region. However, it converges to a constant value of the Ergun coefficient in Non-Darcy flow region.

• 한국조경학회지
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• 제27권4호
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• pp.80-86
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• 1999

The purpose of this study was to suggest a case study and anlaysis of the visual impact in dam construction through visual impact assessment method in Dong-sang river. The results can be summarized as follows; 1) For the evaluation of the visual impact of dam construction, five steps such as field analysis of visual status, finding visual sensitivity area and visual control point, making visual simulation material and evaluation, and visual impact analysis and assessment were suggested as desirable. 2) In the case study, the visual impact of dam construction was evaluated to be simple, unique, modern, static, cool and unfamiliar. 3) There was a few difference between the pre-construction and post-construction in statistical test. Especially, The dam in Man-Jee area was evaluated to be artificial, unique and destroyed in statistical difference, and then we design dam structure with visual friendliness. 4) In conclusion, there was high correlation between pre-construction landscape and post-construction landscape through semantic differential scale method using eleven adjectives. Therefore, we state that there is no visual impact for the dam construction for the moment.