CO2농도와 온도의 상승으로 인한 지구온난화가 진행되었을 때 광, 수분 그리고 유기물 구배에 따른 멸종위기식물인 황근의 생육과 생태적 지위폭의 변화를 알아보았다. 대조구(야외)와 처리구(CO2 + 온도 상승구)로 나누어 각각 광, 수분 그리고 유기물구배를 두어 재배하였다. 그 연구결과, 황근은 낮은 광량보다 높은 광량을 선호하나, 광량이 787±77.76μmol m-2s-1을 넘어가면 높은 광량이라 하더라도 생육이 어려웠다. 또한 유기물이 없거나(0%) 너무 많은 토양(20%)에서는 생육이 어려웠다. 그러나 수분 구배에 따른 경향이 보이지 않았다. 황근의 고사율은 대조구보다 처리구에서 광량이 높은 조건을 제외한 모든 구배에서 높았다. 이는 CO2와 온도가 상승하면 광에 대한 내성범위가 좁아진다는 것을 의미한다. 대조구와 처리구를 비교하였을 때, 수분구배에 따른 경향은 보이지 않았다. 유기물구배에서 는 대조구보다 처리구에서 모두 고사율이 낮았는데, 이는 유기물에 대한 내성의 범위가 넓어진 것을 의미한다. 황근의 생태적 지위폭은 처리구가 대조구보다 광 구배에서 30.1% 좁아졌으며, 수분 구배에서 8.6% 그리고 유기물 구배에서 30% 넓어졌다. 따라서 CO2농도와 온도의 증가로 인한 지구온난화가 진행되면, 황근의 생육은 광량에 의해서 제한될 것으로 판단된다.

몇 가지 도자기 분화 식물의 관상 위치에 따른 생장 반응 을 알아보기 위해 호랑가시나무 (Ilex cornuta Lindl.), 백자단 (Cotoneaster dammeri), 무늬산호수(Ardisia pusilla ‘Variegata’) 및 석곡(Dendrobium moniliforme Sw.)을 수태로 도자기분에 심어 재배온실, 실내의 밝은 쪽, 중간 쪽, 어두운 쪽에서 3개월 간 처리한 후에 식물의 생존율 및 생육 조사를 하였다. 실내위 치에 따른 호랑가시나무의 생존율은 온실이 100%, 실내 밝은 쪽은 80%, 중간은 60%, 어두운 쪽은 60%이었다. 석곡은 호랑 가시나무와 비슷한 생존율을 보였고, 무늬산호수의 생존율은 모든 처리에서 100%이었다. 하지만 백자단은 온실에서 75%, 실내 밝은 쪽은 50%, 중간은 25%, 어두운 쪽은 25%이었다. 호 랑가시나무의 처리기간내의 초장 생장율은 온실이 31.1%, 실 내의 밝은 쪽은 27.3%, 중간 쪽은 27.3%, 어두운 쪽은 4.4%이 었고, 백자단, 무늬산호수 및 석곡의 초장 생장율도 호랑가시 나무와 유사한 경향으로 광도가 낮아질수록 감소하였다. 한편 호랑가시나무의 엽수 증가율 또한 초장 생장율과 비례하여 온 실이 7.5%, 실내 밝은 쪽은 7.2%, 중간 쪽은 6.1% 그리고 어 두운 쪽은 2.7%로 나타났고, 백자단, 무늬산호수 및 석곡의 엽 수 생장율도 호랑가시와 유사한 경향으로 광도가 낮아질수록 감소하였다. 따라서 도자기 분화 식물을 실내에서 오랫동안 관상하기 위해서는 햇볕이 가장 잘 드는 실내 밝은 쪽에서 관 리하는 것이 바람직하다.

Various seismic isolation methods are being applied to bridges and buildings to improve their seismic performance. Most seismic isolation systems are the structural seismic isolation systems. In this study, the seismic performance of geotechnical seismic isolation system capable of isolating the lower foundation of the bridge structure from ground was evaluated. The geotechnical seismic isolation system was built with teflon, and the model structure was made by adopting the similitude law. The response acceleration for sinusoidal waves of various amplitudes and frequencies and seismic waves were analyzed by performing 1-G shaking table experiments. Fixed foundation, Sliding foundation, and Rocking foundation were evaluated. The results of this study indicated that the Teflon-type seismic foundation isolation system is effective in reducing the acceleration transmitted to the superstructure subject to large input ground motion. Response spectrum of the Rocking and Sliding foundation structures moves to the long period, while that of Fixed foundation moves to short period.

Most of existing buried pipes are composed of reinforced concrete. Reinforced concrete pipes have many problems such as aging, corrosion, leaking, etc. The polyethylene (PE) pipes have advantages to solve these problems. The plastic pipes buried underground are classified into a flexible pipe. National standard that has limited the long-term vertical deformation of the pipe to 5% for flexible pipes including PE pipe. This study presents a prediction for the long-term behavior of the polyethylene pipe based on ASTM D 5365. This prediction method is presented to estimate by using the statistical method from the initial deflection measurement data. We predict the behavior of long-term performance on the double-wall pipe and multi-wall pipe. As a result, it was found that the PE pipe will be sound enough more than 50 years if the compaction of soil around the pipe is more than 95% of the standard soil compaction density.

This study was conducted to ameliorate the productive performance of Hanwoo cow using hill pasture grazing system. Twenty seven animals aged 9 were designed to divide with 3 groups which were Control (restricted concentrate and hay for 5 months), T1 (restricted concentrate and pasture grazing ad libitum for 5 months) and T2 (restricted concentrate, 30 g/head of mineral nutrients and pasture grazing ad libitum for 5 months). Average daily gains increased higher in the order of T2, Control and T1. The conception rate of Control, T1 and T2 after artificial insemination during post-grazing period were 88.9%, 100%, 100%, respectively. In conclusion, the results indicated that hill pasture grazing system might enhance not only the productive performance of Hanwoo cow but also profit for conventional feeding system.

To improve rice productivity in Myanmar, we evaluated two Korean rice cultivars and one Myanmar rice cultivar comprised of planting density and fertilization amount in three experiments from rainy season 2014 to dry and rainy season 2015. In the planting density experiment during wet season 2014, the rice yield in ‘Yeongpoong’ and ‘Shwethweyin’ cultivars increased considerably under high planting density but there was no significant differences in rice yield of ‘Dasan 2’ cultivar between planting density treatment. In dry season cultivation 2015, rice yield increased considerably under high planting density at all experimental cultivars. In wet season cultivation 2015, the rice yield of ‘Dasan 2’ and ‘Yeongpoong’ cultivars was significantly increased except ‘Shwethweyin’ cultivar. The yield of ‘Dasan 2’ cultivar was high in rainy season but there was much variation in yield among the planting density treatment and cultivation years. The yield of ‘Yeongpoong’ cultivar was higher in wet season cultivation than dry season cultivation and significantly increased with planting density. In the fertilization amount experiment, the yield of ‘Dasan 2’ cultivar cultivated in wet season 2014 was increased considerably with increasing fertilization amount but there was no difference between ‘Yeongpoong’ and ‘Shwethweyin’ cultivar. The yield of ‘Yeongpoong’ cultivar cultivated in dry and wet season 2015 was increased significantly with increasing fertilization amount. The Myanmar rice cultivar ‘Shwethweyin’ was no difference in yield with increasing fertilization amount. The yield of Korea cultivars ‘Dasan 2’ and ‘Yeongpoong’ was increased significantly with increasing fertilization amount but there was some yearly and seasonal variation. From the above results, if cultivation techniques would be applied in Myanmar, it is possible to raise productivity by using Korean rice cultivars.

This study aimed to evaluate the growth of Ilex cornuta Lindl. & Paxton, Cotoneaster dammeri, Ardisia pusilla ‘Variegata’, and Ilex aquifolium 'Silver Queen' when sphagnum moss was used for media, and the pottery plants were submitted to different temperatures and shade levels. After transplantation to pottery pots with Sphagnum Moss, the growth of I. aquifolium 'Silver Queen' at 25℃ of soil was the highest with 16.8 cm in plant height, 75.0 in leaf number, 256.5 cm2 in leaf area, 18.9 g in fresh weight. I. cornuta Lindl. & Paxton and A. pusilla ‘Variegata’ were in the same range but soil temperatures of 15℃, 20℃, or 30℃ had no effect and the survival rate remained 100%. On the other hand, when I. aquifolium ‘Silver Queen’ was submitted to night temperatures of 4℃, 8℃, 12℃, or 15℃, the following results were obtained: 14.1 cm in plant height, 70.0 in number of leaf, 221.1 cm2 in leaf area, and 18.9 g in fresh weight at 15℃; C. dammeri showed similar results. The survival rate at night temperature 4℃ or 8℃ was 100%, but the plant growth was sluggish. In shading 30% or 60%, the fresh weight of I. aquifolium ‘Silver Queen’, I. cornuta Lindl. & Paxton, and A. pusilla ‘Variegata’ was increased at shading 60% as the plants became taller. Non shading increased the leaf number and leaf area of plants compared with shading. In conclusion, the quality of small woody plants in pottery can be improved when the plant is grown before shipping at a soil temperature of 25°C and a greenhouse night temperature of 15°C, at 30% shading after acclimation

This study aimed to evaluate the growth of Ilex cornuta Lindl. & Paxton, Cotoneaster dammeri, Ardisia pusilla ‘Variegata’, and Ilex aquifolium ‘Silver Queen’ when sphagnum moss was used for purpose of export and the pottery plants were submitted to different watering and quick versus slow release fertilizer. The growth of I. aquifolium 'Silver Queen' watered 50 mL every 3 days was the highest with 16.0 cm in plant height, 79.3 in leaf number, 178.2 cm2 in leaf area, and 18.5 g in fresh weight. C. dammeri also grew best when watered every 3 days. However, the survival rate was 100% for I. aquifolium 'Silver Queen' watered at 12-day intervals and C. dammeri watered at 6-day intervals or more. With quick release fertilizer of 1,000 – 2,000 mg·L-1 applied at 1- to 4-week intervals, I. aquifolium 'Silver Queen' and C. dammeri, plant height, number of leaf, leaf area, and fresh weight increased as fertilizing intervals were shorter. During the short quick release fertilizing at 4-week intervals, the survival rate remained 100%. With slow release fertilizer of 0.5 mg, 1 mg, or 2 mg applied at intervals of 6, 12, and 18 weeks, I. cornuta Lindl. & Paxton and A. pusilla ‘Variegata’ plant height, number of leaf, leaf area, and fresh weight increased with increase of fertilizer amounts and shorter intervals of fertilizing. However, concentration of fertilizer had no effect on plant growth. During the short slow release fertilizing at 18-week intervals, the survival rate remained 100%. Therefore, to improve the quality of small woody plants in the pottery aimed for export, it is preferable to water at intervals of 3 days after acclimation, and use either quick release fertilizer at 3-week intervals or slow release fertilizer at 12-week intervals.

The Korean peninsula has known as a minor-to-moderate seismic region. However, some recent studies had shown that the maximum possible earthquake magnitude in the region is approximately 6.3-6.5. Therefore, a seismic vulnerability assessment of the existing infrastructures considering ground motions in Korea is necessary. In this study, we developed seismic fragility curves for a continuous steel box girder bridge and two typical transmission towers, in which a set of seven artificial and natural ground motions recorded in South Korea is used. A finite element simulation framework, OpenSees, is utilized to perform nonlinear time history analyses of the bridge and a commercial software, SAP2000, is used to perform time history analyses of the transmission towers. The fragility curves based on Korean ground motions were then compared with the fragility curves generated using worldwide ground motions to evaluate the effect of the two ground motion groups on the seismic fragility curves of the structures. The results show that both non-isolated and base-isolated bridges are less vulnerable to the Korean ground motions than to worldwide earthquakes. Similarly to the bridge case, the transmission towers are safer during Korean motions than that under worldwide earthquakes in terms of fragility functions.

This paper describes the Bayesian approach for reliability demonstration test based on the sequential samples from the one-shot devices. The Bayesian approach involves the technical method about how to combine the prior distribution and the likelihood function to produce the posterior distribution. In this paper, the binomial distribution is adopted as a likelihood function for the one-shot devices. The relationship between the beta-binomial distribution and the Polya’s urn model is explained and is used to make a decision about whether to accept or reject the population of the one-shot devices by one by one then in terms of the faulty goods. A numerical example is also given.

본 연구에서는 한국 멸종위기식물인 분홍장구채의 보전 및 인공재배를 위해 식물공장 내 인공적인 광 조건에서 일어나는 생리와 개화반응 특성을 알아보았다. 이를 위해 분홍장구채를 식물공장의 각 챔버에 적색광, 청색광, 백색광, 적색+원적색 혼합광, 적색+청색 혼합광 그리고 적색+청색+백색 혼합광 하에서 재배하여 광합성률, 증산률, 기공전도도, 수분이용효율, 엽록소함량, 최소엽록소형광, 최대엽록소형광, 광계II의 광화학적 효율 그리고 잎과 꽃 수를 측정하였다. 그 결과 적색 단일광과 적색+원적색 혼합광에서 분홍장구채는 가장 많이 개화하였으며, 이 광조건에서는 광합성률, 증산률 그리고 기공전도도는 상대적으로 다른 조건보다 높았으나 수분이용효율은 차이가 없었으며, 엽록소함량은 적었 다. 특히 최소 및 최대 엽록소형광과 광계II의 광화학적 효율은 적색 단일광 조건에서 다른 광 조건보다 낮았다. 이러한 결과는 분홍장구채의 꽃의 생산을 위해서는 적색 단일광이나 적색+원적색의 인공광 조건에서 재배하는 것이 효율적이 라는 것을 의미한다.

To select appropriate Korean varieties in Myanmar, a serial experiments using rice varieties developed in Korea were conducted for 2 years, 2014 and 2015. Among the yield components, panicle number per hill of Shwe Thwe Yin, Myanmar variety, was 14, 19, 17 for 2014 dry season, 2014 wet season and 2015 dry season, respectively, which are 6, 1.3 and 5 panicles more than that of Korean varieties. The grain number per panicle, the ripened grain rate, 1,000 grain weight and yield of Korean rice varieties higher than that of Shwe Thwe Yin, Myanmar variety, at 2014 dry season and wet season. However, grain numbers per panicle, ripened grain rate of Shwe Thwe Yin were similar to that of Korean varieties, the yield of Myanmar variety was higher than yield of Korean varieties, at 2015 dry season. And to study the wide area adoptability, korean rice varieties and Shwe Thwe Yin were tested for 2 years, 2014, 2015 and 3 regions, the yield of Hanareum, Hangangchal 1 and Dasan 2 were higher than the yield of Shwe Thwe Yin and the regional variation of these korean varieties lower than that of Shwe Thwe Yin at 2014 wet season. Dasan 2 and Hangangchal 1 were selected as promising rice varieties in Myanmar.

The rice growing area in Yunnan province of China can be divided into six regions based on climate weather conditions, altitude, ecotype of rice varieties, eco-system, and so on as follows: the alpine and high elevation area of Japonica rice, the cold and warm area of Japonica rice, the Indica and Japonica rice area, the single and double cropping area, the paddy and upland rice area, and the single cropping area of Indica rice. In Yunnan, the annual acreage of rice cultivation has been maintained about 1 million hectares, only 3.8 percent of China’s paddy fields. Amounts of unhulled rice production in 2013 was estimated to be around 6.7 million tons. And average unhulled rice yield per ha was 5.79 tons to 6.70 tons during 2011 to 2013. The three major breeding stages commonly have been for rice breeding program: selection of purelines from native varieties by the first 1960s.: dissemination of introduced varieties from foreign countries in the mid 1960s through 1970s; and creation of new developed varieties by hybridization followed by selection after 1980s. In terms of developing Joponica rice variety, its breeding objectives has been set differently depending on altitude: high yielding, grain quality, cold tolerance, and adaptable to low nitrogen fertilizer varieties for growing in areas of 2,100 m to 2,600 m above the sea level; high yielding, grain quality, resistance to disease, and cold tolerance varieties for cultivating in areas of 1,800 m to 2,100 m; and high yielding, grain quality, resistance to disease, and lodging tolerance varieties for planting in areas of 1,450 m to 1,800 m. In addition, researchers are breeding Japonica hybrid varieties for improving yield potentials in Yunnan Agricultural University.

본 연구는 심리적 임파워먼트가 LMX와 조직몰입의 관계를 매개하는지, 그리고 육성적 피드백이 심리 적 임파워먼트의 매개효과를 조절하는지 밝히는 것을 목적으로 한다. 연구에 사용된 표본은 수도권에 소 재한 6개 대기업에 근무하는 327명의 직원이었으며, 이들로부터 수집한 자료를 분석한 결과는 다음과 같 다. 첫째, LMX는 심리적 임파워먼트와 조직몰입에 유의한 정(+)의 영향을 미쳤다. 둘째, 심리적 임파워먼 트는 조직몰입에 유의한 정(+)의 영향을 미쳤으며, LMX와 조직몰입 간의 관계를 부분 매개하였다. 셋째, 육성적 피드백의 수준이 높아질수록 LMX가 심리적 임파워먼트에 미치는 정(+)의 영향이 강화되었다. 넷 째, 육성적 피드백의 수준이 높아질수록 LMX와 조직몰입 간의 관계에 대한 심리적 임파워먼트의 매개효과가 강화되었다. 본 연구 결과는 조직 구성원의 조직몰입 수준을 향상하기 위해서는 LMX를 관리하는 동시에 육성적 피드백을 높은 수준으로 제공함으로써 조직 구성원이 경험하는 심리적 임파워먼트를 증진 하는 것이 중요하다는 것을 시사한다.

본 연구의 목적은 청소년 인성코칭프로그램을 개발하고 그 효과성을 검증하는데 있다. 연구 목적을 달성하기 위하여 KEDI(한국교육개발원)에서 개발한 인성검사 설문지의 하위덕목에 도미향 외(2014) CPA코칭모델과 코칭대화모델을 적용하여 인성코칭프로그램을 구성하였으 며, Y시 소재의 G중학교, H중학교, J중학교의 중학생 30명 중에서 15명을 실험집단, 15명을 통제집단으로 나누어 프로그램을 실시하였다. 실험집단 15명을 대상으로 주 1회 인성코칭프로 그램을 90분씩 총 10회기에 걸쳐서 실시하였다. 인성코칭프로그램의 효과분석을 위해 KEDI 인성검사를 실험집단, 통제집단에 사전, 사후로 실시하였으며 수집된 자료는 SPSSWIN 18.0 프로그램을 이용하여 양적분석을 하였다. 연구를 통해 얻은 결과는 실험집단의 인성지수는 10개의 하위덕목 모두에서 유의미한 차이 가 나타나며, 하위덕목별 변화의 정도는 각각의 인성덕목의 총점이 다르다는 것을 고려할 때 개별적인 차이를 비교하는 것은 의미가 없다는 것을 알 수 있다. 실험집단이 15명이라는 점과 10주간의 짧은 기간 동안 프로그램을 진행한 한계가 있었음에도 불구하고 실험집단의 인성지수가 유의미하게 향상되었다는 점은 인성코칭프로그램이 청소년의 인성함양에 긍정적인 효과가 있음을 알 수 있다. 이러한 결과는 현재 인성교육이 가지고 있는 문제점에 대한 해결방안으로써 코칭프로그램의 접목을 통한 다양한 인성코칭프로그램의 개발의 가능성을 제시하고 있다.