• Horticultural Science & Technology
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• v.28 no.3
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• pp.484-491
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• 2010

This study investigated the effects of the intergenerational horticultural activity program on the improvement of emotion and self-esteem for the elderly and young children. When the pre- and post-treatments of the elderly was compared, both the control and treatment didn't show a significant difference in emotion. In self-esteem of the elderly the control didn't show a significant difference; on the contrary, treatment showed a highly significant difference ($p$<0.01). When a comparison was made on the pre- and post-treatment of young children, the control didn't show a significant difference in emotional intelligence; on the contrary, treatment showed a highly significant difference ($p$<0.001). In self-esteem of young children both the control and the treatment didn't show a significant difference. The results suggest that intergenerational horticultural activity program can improve young children's emotional intelligence and the elderly's self-esteem.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.40 no.2
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• pp.135-143
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• 2020

Natural drought is a three-dimensional phenomenon that simultaneously evolves in time and space. To evaluate the link between meteorological and hydrological droughts, we defined a drought event from a three-dimensional perspective and analyzed the propagation characteristics in time and spaces. Overall results indicated that 77 % of the total cases of spatio-temporal droughts was propagated based on the single category relationship between meteorological and hydrological drought events, while 23 % was affected by multiple meteorological drought events to the occurrence of hydrological drougts. Especially, it turned out that the hydrological drought was caused by the spatio-temporal effects of the propagation of four meteorological drought events generated due to long-term lack of precipitation in 1994-1995. In addition, the meteorological drought caused by the lack of precipitation in the summer of 2001 lasted for several months, and was propagated to the hydrological drought in April 2002.

• Journal of the Korean Data and Information Science Society
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• v.24 no.1
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• pp.105-115
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• 2013

As far as the universities in south Korea are concerned, they have to meet the need of the situation as the number of the incoming students are decreasing because of the population-reducing in south Korea. The Ministry of Education Science and Technology is enforcing the restructuring of an universities by evaluating all the universities in Korea by using some indices (employment rate, supplement rate of students etc.). Most of the universities in Korea are widely permitting the changes of the major study as a method to improve the 'supplement rate of students' among some measures. These changes of major study (moving in and moving out) can give rise to difficulties in managing an university because there might be the departments with a small number of students as they moving out from low level departments to high level ones. Moreover, as raising the change rate of the major study, there is no loss from the university's point of view but a department could be in a difficult situation. The purpose of this study is to grasp the characteristics for changing major study by a general statistical analysis and graphs produced by a social network analysis with the D university's case. The results of this study are as follows; (a) category is from the engineering to humanity-society, (b) entrance level is from low to high, and (c) employment rate is from low to high as well.

• Journal of Embryo Transfer
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• v.9 no.1
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• pp.95-102
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• 1994

본 연구는 종모우의 선발방법으로 난포란을 이용하여 실험실내 정자의 수정능력을 직접 검정하여 평가코자 시도되었다. 즉 본 실험은 후대검정중에 있는 한우 후보종모우 15두의 동결융해정자의 수정능력을 평가하기 위하여 정액을 고장액(HIS)에 처리한 후 DM에서 6시간 그리고 소 난포액이 20% 첨가된 DM에서 4시간 전배양하여 수정능을 획득시켜 정자의 활력과 첨체 반응율을 조사하였고 전배양된 정자의 체내(토끼 난관) 또는 체외수정능력을 조사하기 위하여 FCS 15%, 발정암소혈정(CSS) 10%가 첨가된 mKRB에서 체외성숙된 한우난포란과 수정시켜 수정능력을 평가하였으며 인공수정에 의한 개체별 수태율과도 비교 검토한 바 다음과 같은 결론을 얻었다. 1. 한우 난포란의 체외성숙율은 BSA 첨가구 에서 43.8%, FCS 15% 첨가구에서 67.4%, CSS10% 첨가구에서 69.9%이었다. 2. 토끼 난관에서 체외수정율은 BSA 참가구에서 43.8%, FCS 15% 참가구 41.2% 및 CSS 10% 참가구 35.0% 이었다. 3. 후보종무우 15두의 정액을 HIS-DM으로 처리후 6시간 전배양하였을 때 정자의 활력지수는 9-32%였고 첨체반응율은 19-44% 이었으며 20% 난포액을 첨가하여 4시간 전배양 하였을 때 정자의 활력지수는 9-13% 이었고 첨체반응율은 20-43%로 개체간에 차이가 있었다. 4. 체외수정율은 6.6-85.7%였으며, 발정암소혈청(CSS) 10%가 첨가된 mKRB에서 성숙시킨 난포란이 FCS 15% 첨가된 mKRB에서 성숙시킨 난포란보다 다소 높았으나, 정자수정능획득방법간에는 차이가 없었 다. 5. 체외수정율에 있어서 전배양후 정자활력지수와는 부의 상관이 었으며, 첨체반응율과는 낮은 정의 상 관을 나타냈다. 6. 종모우의 수태율은 체외수정율, 정자활력지수 및 첨체반응율과 낮은 정의 상관관계를 나타냈다. 7. 종모우의 개체간 수태율 우열순위에서는 수정율순위와의 사이에 더욱 낮은 부의 상관관계를 보였다. 8. 이상의 연구결과 비록 후대정검중의 제한된 자료로 인하여 종모우 수태율과 체외수정율간에 유의적 인 상관관계는 없었으나, 연결 한우 수정율 평가에 대한 실험실내의 검정가능성을 찾을 수 있었다.

• Economic and Environmental Geology
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• v.55 no.4
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• pp.389-398
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• 2022

Many studies have been conducted to accurately predict the correlations between As and heavy metals content in contaminated soil and cultivated crops; however, due to the low correlation between the two, few clear results were obtained to date. This study aimed to create statistical models that predict the As content transferred from soil to polished rice, considering the physicochemical properties of the soil, as well as the total content and the single-extracted content of As in the soil. Predictive models were derived through regression analysis while sequentially classifying soil samples according to pH, soluble As content by single extraction, and organic matter content of the soil. The correlation coefficients between the As content in 80 polished rice and total As content and Mehlich soluble As content in the soil were low, 0.533 and 0.493, respectively. However, the models derived after sequential classification of the soil by pH, a ratio of total As content to Mehlich soluble As content, and organic matter content greatly increased the predictive power; ① 0.963 for 13 soils with a pH higher than 6.5, ② 0.849 for 15 soils with pH lower than 6.5 and a high ratio of As_Tot/As_Mehlich, ③ 0.935 for 30 soils with pH lower than 6.5, a high ratio of As_Tot/As_Mehlich, and organic matter content lower than 8.5%. The suggested prediction model of As transfer from soil to polished rice derived by soil classification may serve as a statistically significant methodology in establishing a rice cultivation standard for arsenic-contaminated soil.

• Clinical and Experimental Pediatrics
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• v.49 no.6
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• pp.691-695
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• 2006

Hepatoblastoma is a hepatic tumor predominantly occurring in children. The usual site of metastasis is the lung. There are only several reports worldwide on the distant metastasis of hepatoblastoma to the central nervous system in children. Only one reported case showed survival of a patient after multiple resections of a recurrent brain lesion. Involvement of the cardiovascular system has been reported in the medical literature. Lesions almost always involve the right-side of the heart. We report a case of recurrent hepatoblastoma at multiple sites, including brain, left atrium of the heart and lung in a 6-year-old girl who was partially treated in the past at the age of 1.5 years; the patient had been event-free for four and a half years.

• Journal of the military operations research society of Korea
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• v.35 no.1
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• pp.83-93
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• 2009

The future warfare is known as an effective centric paralysis warfare where military high technologies such as pinpoint strikes are applied. In this future warfare, for supporting military operation leadership and power of concentration in the combat, a new concept of logistic support is required and the focused logistic is proposed as an alternative. To implement this focused logistic, asset visibility should be assumed for every combat units in real time. However, current logistic information systems provide only limited information. In this study, a prototype information system for class 2 and 4 supplies is proposed for overcome limitations of current information system. The developed prototype zooms in on combat units providing business process integrations and logistic function synchronization. Also, asset visibility, the essential element of focused logistics, is presented and utilized to show the speedy and effective logistic support.

• Journal of Veterinary Clinics
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• v.27 no.3
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• pp.307-309
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• 2010

A 25-year-old female California sea lion (Zalophus californianus) died after a history of depression, loss of appetite, weakness and weight loss. At necropsy, multifocal to coalescing, tan to white, firm nodules, ranging from 0.5 to 3 cm in diameter were observed throughout both kidneys. Renal adenocarcinoma metastasis to the liver, spleen and small intestine was diagnosed based on gross and histopathological findings. To the best our knowledge, this is the first reported case in Korea, and understanding this case will support management and diagnosis of future cases of renal adenocarcinoma in California sea lions.

• Proceedings of the Korean Vacuum Society Conference
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• 2011.08a
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• pp.136-136
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• 2011

AlSb는 광전자 소자응용에 매우 유용한 재료이며 이를 이용한 반도체소자 설계 및 밴드갭 엔지니어링을 위해서는 화합물 반도체의 전자밴드구조를 포함한 광학적 특성이 반드시 요구된다. 본 연구는 이러한 요구의 해결방안으로서 AlSb 화합물의 유전함수 온도의존성을 0.7~5.0 eV의 에너지 영역에서 타원편광분석법을 이용하여 분석하였다. AlSb는 산소와 급격히 반응하기 때문에, 대기 중에서 물질 고유의 광특성이 유지되기 어려울 뿐만 아니라, 박막 위에 생성되는 산화막 때문에 순수한 AlSb의 유전함수 측정이 불가능하다. 따라서 박막의 산화 효과를 최소화하기 위하여 초고진공 상태의 molecular beam epitaxy 챔버 안에서 800 K의 온도로 성장한 1.5 ${\mu}m$ 두께의 AlSb 박막을 상온 300 K 까지 온도를 단계적으로 변화시켜가며 타원편광분석기를 이용하여 실시간으로 측정하였다. 각 온도에서 측정된 AlSb의 유전함수를 2차 미분하여 전이점(critical point)을 분석한 결과 $E_0$, $E_0+{\Delta}_0$, $E_1$, $E_1+{\Delta}_1$, $E_0'$, $E_0'+{\Delta}_0'$, $E_2$, $E_2+{\Delta}_2$에 해당하는 각 전이점들의 온도 의존성을 확인할 수 있었다. 실험에서 측정된 특정 온도를 포함하여 임의의 온도에서의 AlSb의 유전함수를 유도하기 위하여 변수화모델을 사용하였고 이를 통하여 각 변수들의 온도 의존 궤적을 분석하였다. 2차 미분법을 이용한 전이점들의 온도의존성 분석결과를 기준으로 변수화 모델링을 진행하였으며 그 결과 각 온도에서 실제 유전함수와 근소한 차이를 갖는 AlSb의 유전함수 모델을 만들 수 있었다. 따라서 본 연구결과는 반도체 물성에 대한 학술적 측면뿐 아니라 고온에서의 소자공정 실시간 모니터링 및 반도체 소자 설계 등의 산업적 측면에서 매우 유용하게 사용될 것으로 기대된다.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.14 no.1
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• pp.13-21
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• 2015

This study focuses on operational analysis of 2 types of intersection shared lanes. First, the analysis showed that a through & right-turn shared lane is always less used than the adjacent through-only lanes and as a result, operational efficiency deteriorates. To improve the efficiency fine-tuning in signal timing optimization using lane-by-lane traffic volume data is required. Further improvement can be achieved by guiding drivers to equally use the shared lane. For left-turn & U-turn shared lanes, it was found that saturation flow rate is affected by interference between U-turn and conflicting right-turn movements. However, since such interference does not occur in every cycle, a statistical model must be established to develop realistic adjustment factor for saturation flow rate of the shared lane.