토마토 과실의 숙성기간은 운송기간과 상품성에 상당한 영향을 미친다. 특히, 고온에서는 과실숙성이 빨라지므로, 숙성기간은 열대지방에 수출하는 토마토 품종에서 반드시 고려되어야 한다. 토마토 과실숙성을 효과적으로 차단하는 RIPENING-INHIBITOR (Rin) 유전자는 열성 유전하는 돌연변이체에서 보고되었고, 교잡후대(Rin/rin)에서는 숙성이 느리게 진행되어 저장성이 상당히 향상된다고 알려졌다. 따라서, 본 연구에서는 수출용 토마토 품종의 육성을 위해, 과실 숙성의 저해와 관련한 Rin 유전자 특이적인 분자 표지를 개발하고자 하였다. Rin과 rin유전자의 mRNA와 genomic DNA의 염기서열 정보를 확보하고 다형성을 나타내는 프라이머 조합을 선발하여, 공우성 SCAR 분자표지로 개발하였다. 토마토 육성 라인 24주에서 과실숙성 정도와 PCR밴드를 비교한 결과, 공우성 마커는 동형(Rin/Rin, rin/rin)과 이형(Rin/rin)의 유전자형을 구별하기에 적합하였으며 이를 이용하여 저장성이 좋은 토마토 품종개발에 도움이 될 것으로 기대한다.

본 연구에서는 가뭄빈도해석을 위해 이변량 확률분포함수를 적용하였으며, 가뭄 특성(가뭄 지속기간과 심도)의 상호 관계를 고려하여 지역적 가뭄특성을 종합적으로 판단하였다. 또한 단변량 가뭄해석의 한계점을 극복하기 위한 방안으로 이변량 가뭄해석을 수행하였으며, 이를 위해 코플라 함수를 적용하였다. 가뭄 발생의 확률 및 경향성을 종합적으로 나타내어 줄 수 있는 결합 확률밀도함수를 추정한 후, 지점별 가뭄빈도해석 및 과거 최대가뭄사상에 대한 단변량 및 이변량 재현기간을 산정하여 비교·분석하였다. 또한, 우리나라의 과거 최대가뭄사상에 대한 가뭄위험도분석을 위해, 연속되는 50년과 100년 동안 최소 한번 발생하는 확률(과거 최대가뭄사상 크기의 가뭄)을 강우관측지점별로 계산하여 가뭄위험지역을 예상하였다. 그러나 우리나라와 같이 강수자료의 기록연한이 짧은 경우에는 이변량 가뭄빈도해석을 수행하는 데 큰 불확실성을 야기할 가능성이 있다. 그러므로 가뭄해석 결과의 불확실성을 정량화시키기 위한 방안으로 강수모의기법을 활용하였으며, 그 결과 관측된 가뭄사상으로 추정된 이변량 가뭄빈도곡선에 대한 5%, 25%, 50%, 75%, 그리고 95%의 신뢰구간을 제시할 수 있었다. 또한 가뭄 지속기간과 심도의 95% 신뢰수준에 대한 이변량 가뭄재현기간의 경계값(상한값 및 하한값)을 추정하였다. 그 결과 불확실성의 원인은 가뭄빈도해석 시 고려되었던 두 변량에 대한 낮은 상관성으로 인해, 확률적인 방법으로 결합분포모형을 추정하는 데 있어 발생한 불확실성인 것으로 확인되었다.

In this prolonged economic recession, the countries in Northeast Asia play a crucial role in the global market and the relationship between Korea and China gets more attention due to its significant achievement during the past 20 years after the establishment of diplomatic ties in 1992. In this regards, this study presents general overview of Korea-China Car Ferry Route and evaluates the efficiency level of each operating route using DEA model. Incheon-Yingkou, Incheon-Lianyungang, Pyeong Taek-Lianyungang are analyzed as efficent routes, while from the view point of passenger efficiency, 4 routes i.e, Incheon-Dalian, Incheon-Dandong, Pyeong Taek- Weihai, Gunsan-Shidao are also noted as efficient routes. Consequently, other inefficient routes can benchmark these efficient routes by increasing cargo volume and passengers.

This study investigated the quality characteristics between spring cultivars of Kimchi cabbage(Brassica rapa L. ssp. pekinesis). We measured the weight, length, width, formation index, midrib thickness and moisture contents of fresh Kimchi cabbage for characteristics of growth. And we analyzed the free sugar, amino acid, organic acid, mineral, pectin and cellulose contents of fresh Kimchi cabbage. The hardness and firmness were measured for texture of fresh Kimchi cabbage. The weight of 'K-power' cultivar was the highest than other cultivars. The ‘Jeongsang’ cultivars was the thinnest midrib thickness in cultivars, but it was not significantly different. The free sugar levels of spring cultivars was the highest in ‘Chunkwang’. Malic acid content of ‘Jeongsang’ was significantly different among spring cultivars. Also amino acid content of ‘K-power’ and ‘Chunkwang’ were significantly different among spring cultivars Mineral content in ‘K-power’ and ‘Bomaknorang’ were greater than that of other cultivars. Especially Na, Ca and Mg contents of ‘K-power’ and ‘Bomaknorang’ were higher four times than that of other cultivars. Pectin content of ‘Jeongsang’ was higher than that of other cultivars, but it was not significantly different. Hardness and Firmness were not significantly different among spring cultivars.

This study describes the identification of Panax species using mitochondrial consensus primers. Initially, a total of thirty primers were tested in ten Korean ginseng cultivars and two foreign Panax species, P. quinquefolius and P. notoginseng. In the polymerase chain reaction (PCR) amplification results, three primers (cox1, nad1/2-3 and nad2/1-2) generated co-dominant polymorphic banding patterns discriminating Korean ginseng cultivars from P. quinquefolius and P. notoginseng. However, these primers could not generated polymorphisms among the Korean ginseng cultivars, and simply represented species-specific polymorphisms for P. quinquefolius and P. notoginseng. Primers PQ91 and PN418 were designed from the consensus sequence of nad1/2-3 region. Two banding patterns (A or B) were detected in PQ91. Korean ginseng cultivars and P. notoginseng shared the same banding pattern (A type) and P. quinquefolius was identified another banding pattern (B type). In the case of PN418, two banding patterns (A or B) were detected in the Korean ginseng cultivars and two foreign Panax species. Korean ginseng cultivars and P. quinquefolius shared the same banding pattern (A type) and P. notoginseng was identified another banding pattern (B type). The combination banding patterns of three Panax species, Korean ginseng cultivars (Panax ginseng C. A. Mey.), P. quinquefolius and P. notoginseng, was identified as 'AA', 'BA' and 'AB', respectively. Consequently, PQ91 and PN418 primer sets can be used to distinguish among Panax species.

In this paper, the seismic performance of FCW apartment building with porous hysteretic damping system(PHDS) is examined by comparing with the building designed by KBC2009. The results show that even though the seismic force-resisting system is designed to reduce the design seismic base shear by 75 percent, the building with PHDS is enough to satisfy the performances required by the national seismic code

Many researches about damage prediction for earthquake have been managed separately in Korea so that it would be managed comprehensively and systematically. Also it is necessary to develop the algorithms of ground for earthquake disaster response system in NEMA. This is a study to improve the reliability for damage estimation. We compared foreign cases to find a development direction which can be applied to the earthquake disaster response system.

This study proposed simplified design procedure of friction damper for enhancing structural seismic performance. Friction damper has a nonlinear characteristic as performing stick and slip motion. So that reason, design of friction damper is difficult. For easy design of damper, first, equivalent damping ratio of the friction damper is derived. Second, design procedure is proposed by the equivalent damping ratio. Finally, seismic performance of structure installed with the friction damper is verified by five earthquake data.

The purpose of this study is to consider site effect in order to estimate Soil-Structure and attenuation parameters with a greater degree of reliability. Site amplification is calculated by proposed Nakamura (H/V ratio). The site amplifications using acceleration motion were compared at several sites. The result can be used for the study of site classification and removal of the site amplification effects.

This study is to understand the flexural behaviors of hollow core beam using GFRP reinforcing Bar. The ultimate goal of this study is to apply the hollow core slab using GFRP reinforcing bar in a construction site. To achieve this, five specimens is planned and conducted on experimental study. The shape and size of specimen are rectangular shape of cross section with 210mm x 230mm. As a results of test, to add deformed bar in hollow core beam using GFRP reinforcing bar demonstrated superior flexural performance. Therefore hollow core beam using GFRP reinforcing bar is considered appropriate to apply in the field.