• Journal of Bio-Environment Control
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• v.29 no.4
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• pp.406-413
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• 2020

This study was conducted to find out optimum fruiting node order, pinching node order, and harvesting time in hydroponics using coir substrates to produce high quality melon (Cucumis melo L.) fruit. Three plants per coir slab (100 × 20 × 10 cm) were planted for each treatment. Yamazaki standard nutrient solutions for melon were supplied with 1.8, 2.0, and 2.3 dS·m^-1 at the early, middle (fruit enlargement step), and late growth stages, respectively. Two cultivars of 'PMR Dalgona' and 'Earl's Aibi' were used for fruiting node order and pinching node order experiments. Fruiting node treatments were conducted three replications (8-10 ^th, 11-13 ^th, and 14-15 ^th nodes) and pinching node treatments treated with three replications (18 ^th, 21 ^th, and 24 ^th nodes). Two cultivars of 'PMR Dalgona' and 'Earl's Crown' were used for fruit harvesting time experiment and treated with in four replications (45, 50, 55, and 60 days after fruiting). In growth characteristics, the leaf width and leaf area of 'PMR Dalgona' were the greatest 28.2 cm and 10,845 ㎠. Respectively, 11-13 ^th fruiting nodes or more. The node length of 'Earl's Aibi' was the longest by 147.6 cm at 11-13 ^th fruiting nodes. For fruit quality characteristics, the fruit weight of 'Earl's Aibi' at 11-13 ^th fruiting node fruiting was the greatest by 2.0 kg. The soluble solids content (SSC) of 'PMR Dalgona' was the highest by 14.5 °Brix at 8-10 ^th nodes in fruiting node orders and 14.5 °Brix at the 24 ^th pinching node order, respectively with significant difference. The SSC tends to increase in the same for both cultivars of 'PMR Dalgona' and 'Earl's Aibi' as the position of fruiting node was lower. The SSC and fruit weight of melon harvested at 55-60 days after fruiting was the best. From the results of this study, most of SSC tends to increase in the lower position of fruiting node order and the higher pinching node order, whereas the fruit weight shows a tendency of increasing with higher fruiting node. In addition, the SSC of fruit increased as the number of days after fruiting increased, and further research is needed for more various cultivars. In melon hydroponics using coir substrates, it is needed to figure out the characteristics of each cultivar to determine optimum fruiting node order, pinching node order, and fruit harvest time.

• The Research Journal of the Costume Culture
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• v.17 no.3
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• pp.499-511
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• 2009

As the demand of the consumer for high-sense clothing, relation with materials is becoming important even in clothing construction. Especially, the cutting angle of materials is becoming an crucial element in the formation of silhouette, and drape of Hem line, of skirts. Accordingly, in this study, Hem line shapes between real clothing and 3D virtual clothing of "i-Designer" were analyzed by manufacturing semi-flare skirts of polyester 100% according to a cutting angle, and the results are as follows. As a result of comparison of silhouette between the real clothing and the virtual clothing, the real and the virtual have a similar feeling regardless of a cutting angle. In case of drape shapes, both the front and the lateral side were represented in almost similar shapes. The back side, however, the real and the virtual showed a great difference in case of grain direction. And in the whole silhouette, the real and the virtual were represented similarly. It could be known that with regard to Hem-line drape shapes between the real clothing and the virtual according to a cutting angle, the real clothing is represented in a location farther from the body than the virtual clothing and, the location or number of node was similarly showed in the real and the virtual.

• The Journal of the Korea Contents Association
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• v.18 no.3
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• pp.286-298
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• 2018

This study presents determinants of resettlement considering population, economy, residential environment, policy characteristic, proposes implications for increase of resettlement. The research method deducted determinants of resettlement by union groups using logistic regression, union members are divided to more 10 years group and under 10 years group focused on real estate ownership duration. The analysis results are summarized as follows. More 10 years group has higher age, neighborship, satisfaction about pre-sale price, inside region in redevelopment promotion project, satisfaction about increase of real estate price, the higher resettlement decision probability. Under 10 years group has higher satisfaction about increase of real estate price, satisfaction about pre-sale price, satisfaction about floor area ratio incentive, the higher resettlement decision probability. the political implications must be customized financial support considering economic situations and increase of asset value by real estate ownership duration.

• Journal of Bio-Environment Control
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• v.14 no.2
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• pp.83-88
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• 2005

A study was conducted on three pollination methods on oriental melon(sageageol-ggul) grafting with pumpkin(seongjutozoa) for the labor-saving and to improve fruit set. Fruit weight, flesh thickness and fruit setting rate of oriental melon were greater in growth regulators treatment than those of pollinated by bees. Sugar content and hardness of fruits pollinated by bees were higher than those of by growth regulators. From the last ten days of the February to the first ten days of the March, fruit setting rate was $95\%$ in fruit setting growth regulators, whereas it was $46\%$ and $45\%$ in pollinated by honey and bumble bee, respectively. After the middle of March, the percentage of fruit setting was >$98\%$ in all the pollination methods. The cultivation under plastic houses of oriental melon, suitable fruiting time far the pollination by bees was decided after middle days of the March. Chromaticity and especially the value of 'a' of fruit of oriental melon pollinated by bees were higher than those of growth regulators. The percentage of fermented fruits of bee pollinated and growth regulators treated was $6.7\~9.1\%\;and\;28.1\%$, respectively. The weight of 100 seeds of bees pollinated were higher than that of growth regulators. The more increased the weight of 100 seeds the less appeared the rate of fermented fruits. The percentage of marketable fruits of the honey and bumble bee pollinated and that of growth regulators treated was $82\%,\;80.3\%\;and\;62.5\%$, respectively. The decreasing rate of fruit weight during storage of bees pollinated was less than those of growth regulators. In these results, the introduction of honey bee and bumble bee for the pollination of oriental melon was able to labor-saving of fruit set and increase of fruit quality.

• Journal of Energy Engineering
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• v.24 no.1
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• pp.24-31
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• 2015

The purpose of this study is to provide the thermal comfort range according to the residential style and clothing level at radiant floor heating space, and compare the annual energy consumption and energy cost for each condition. Lower neutral point temperature has been stood for floor sitting style than chair sitting style, which appears that the thermal sensation was affected by local heat transfer between floor surface and the human body. The result of research indicates that neutral point temperature was in inverse proportion with the clothing level. It is interpreted that the increasing of clothing level results decrement of heat loss from human body, and is available to achieve same thermal comfort at lower room temperature. It was analyzed that the floor sitting style is more economical residential style than the chair sitting style, because the energy consumption of the floor sitting style is saved by 6.0% in average to compare with that of the chair sitting style. It is analyzed that energy consumption has been decreased by 13.5% with the clothing level of 1.2 Clo than with that of 1.0 Clo, and decreased by 18.0% than with that of 0.8 Clo, which explains that the energy saving can be achieved with the variation in life habit to increase the clothing level.

• Journal of the Korean Society of Costume
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• v.54 no.3
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• pp.43-51
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• 2004

The purpose of this study was to compare ideal clothing and actual clothing behavior between Korean and Japanese college students. 185 Korean students and 91 Japanese students were used into data analysis from October to December. 2000. The age range was 18 to 28 years. The results were as followed. 1) Japanese students wanted to wear fitted clothing styles with revealing the body, while Koreans wanted to wear not only fitted styles but also relaxed and coved body styles. 2) Korean students wore more loose styles and fitted upper styles and pants than Japanese students. On the other hand, Japanese students wore fitted clothing styles and skirt. 3) Japanese students showed higher correlation between ideal clothing styles and actual clothing styles than Koreans. This means that although Koreans want to wear ideal styles, they don't wear those styles much. 4) Overweight students tended to avoid wearing fitted and revealed body styles, pursuing more loose and coved body styles. This tendency showed stronger to Koreans than Japanese students.

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.11 no.4
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• pp.66-73
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• 1997

A capacitor discharge impulse magnetizer using semiconductor switching device is used to produce a high current impulse of short duration in a magnetizing fixture for magnets of the various shapes. The price of today's magnetizer is relatively expensive. This paper described a method for cost estimation of capacitor discharge impulse magnetizer using semiconductor switching device and the economical efficiency analysis. We used a cost structure consisted of five major subsystems. Especially, we estimated the potential for a cost reductions in impulse magnetizer as a function of time using the learning curve, and the potentials of cost by depreciation. The reliable results were obtained by using iron-core fixture coupled to a middle-voltage magnetizer.

• Journal of Embryo Transfer
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• v.21 no.1
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• pp.7-11
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• 2006

개 난자의 체외성숙과 체외수정을 통해 수정란을 획득하기 위하여 개 난소를 채취하여 난자의 형태, 난소의 채취시기 등이 체외성숙과 체외수정에 미치는 영향을 구명하기 위하여 수행하였다. 1. 난구세포 부착 및 미부착 난자를 48시간 배양했을 때 체외 성숙율은 $42.0{\pm}3.4%,\;24.4{\pm}4.1%$였다. 난구 세포 부착 난자의 체외 성숙율이 미부착 난자의 체외 성숙율보다 유의하게 높게 나타났다(p>0.05). 2. 난소를 휴지기, 난포기 및 황체기로 구분하여 난자를 회수하여 배양했을 때 체외 성숙율은 각각 35.6%, 50.0%, 31.1%였고 체외 발생율은 각각 2.2%, 20.0% 및 8.9%로서 난구 세포 부착 난자가 미부착 난자에 비해 유의한 체외 수정율을 나타냈다. 3. 난구세포 부착 및 미부착 난자를 이용하여 체외수정시켰을 때 체외 수정율과 체외 발생율은 각각 48.0%, 35.6% 및 22.5%, 13.3%로서 난구세포 부착 난자가 미부착 난자에 비해 유의하게 높게 나타났다.

• Journal of the Korean Magnetics Society
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• v.2 no.2
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• pp.145-149
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• 1992

The characteristics of electromagnetic devices with permanent magnet depends greatly on the remanence pattern of permanent magnet. So, it is necessary to analyze the pattern of remanence in permanent magnet. This paper presents a finite element analysis of magnetizer considering the nonlinearity and anisotropy of yoke and magnet in magnetizer. The distributions of magnetizations are obtained according to the variations of magnetizing currents for two kinds of magnetizers with different magnetizing poles. It is found that the excessive magnetizing current results in the reduction and polarity reversion of magnetization in the multi-pole magnetizing system where the pole angle is too small. During the design and analyzing of multi-pole magnetizer, it must be considered that there exists an optimal value of magnetizing current and pole angle of magnetizer.

• Proceedings of the Korea Water Resources Association Conference
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• 2018.05a
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• pp.260-265
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• 2018

충적하천은 환경 변화에 따라 하천의 형태가 변화하고, 흐름 또한 변화하는 특성을 지닌다. 내성천은 대표적인 충적하천으로 최근 하도내 사주에 식생이 활착되고 육상화가 진행됨에 따라 식생사주 영역은 증가하고 흐름부의 하폭은 전체 하폭대비 매우 좁아진 상태이다. 따라서 하도내 흐름특성이 변화하여 저평수시 유속이 증가하고 지속적으로 하상침식이 발생하고 있다. 본 연구에서는 내성천에 위치하는 조제, 월포, 향석 관측소의 최근 10년간 강수량 및 수위자료 검토와 각 관측소 위치의 항공사진에 의한 하도내 식생활착 진행과정과 단면측량 자료를 바탕으로 횡단면 침퇴적 변화율을 검토하였다. 또한, 식생활착 및 하상침식의 영향이 수위-평균유속과 수위-유량관계의 변화 양상을 검토하였다. 검토결과 현재까지 내성천의 식생활착 및 하상침식의 원인은 지난 5년간 적은 강수량 영향으로 홍수시 하상소류력이 감소하여 흐름특성이 변화한 것이 주된 요인으로 판단된다.