• 한국관개배수논문집
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• 제19권1호
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• pp.50-63
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• 2012

Many reclaimed tideland projects in Korea have been conducted to secure the food self-sufficiency. In fact, the domestic food self-sufficiency has been greatly improved and reclaimed tideland projects contribute to Korea's economic and social development directly or indirectly replacing agricultural lands from urbanization, industrialization. As result, current self-sufficiency of rice reach the demand(104.6%) while rate of upland crops has less than 30% of self-sufficiency rate and corn, wheat, soybeans, etc. are virtually dependent on imports. Domestic price of crop is expected to be unstable by trend of international grain prices. Therefore, developing reclaimed tidelands as upland which is originally constructed for paddy fields could be a good option to become steady in domestic crop market and dedicate to ensure a stable food security. The study to prepare measures for dealing with disasters in reclaimed tidelands of west coast district is required in order to utilize those sites for infra construction of multi-utilization in those sites and The result of flooding analysis in this study can suggest policy direction for practical utilization of reclaimed tidelands in yellow sea area.

• 한국조경학회지
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• 제16권2호
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• pp.59-68
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• 1988

The relative difference between Korean rural region and urban region has increased by the rapid urbanization and industrialization since 1960. Therefore it will be important to raise the income of the people living in rural region. So the Korean government established the collective side job area and rural industrial area for the increasing of the non-agricultural income. For this, the touristic resources development is also the another important means of the rural region development. So the purpose of this thesis exists in the presentation of the direction of the touristic resources development in rural region. For this purpose, three representative regions among the Korean rural regions were selected and the case study was accomplished. In this way the rough direction of the touristic resources development in rural region has presented The direction of the development and the conclusion were as follows : 1)Planners must establish the planning with the vision and demand of future than percent condition. 2)Because the urbanization is continued incessantly, the rural region is developed to be the space of resort. 3)The touristic resources development in rural region is contributed to the regional development through the raising interaction of the touristic resources. 4)The rural region is developed to be the space of the Korean rural tradition 5)The grassland os constructed in the mountenous land and the landscape of the Korean national land is changed to be the picturesque landscape. 6)The construction of the traditional artistic products is accomplished to increase the income of the people in rural region.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2010년도 추계 학술발표회 2차
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• pp.32-37
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• 2010

Recently, the land area for many people has been limited because of industrialization and modernization in Korea. The large-scale constructions like the reclamation development projects have been progressed to resolve this problem mentioned above. Therefore, as many of the usefulconstruction materials as possible are needed to perform the large-scale construction projects. Many studies for the utilization of pond ash which has a similar characteristic of sand have been conducted and there has been often occurred many structural problems on roadbed in winter. Therefore, the characteristics of the freezing and thawing for Controlled Low-Strength Material (CLSM) using pond ash were analyzed and evaluated by unconfined compressive strength test in this study. As a result of this study, it was confirmed that new CLSM using pond ash with cement (8.2% by weight)was able to stand for the freezing and thawing behavior.

• 수산해양교육연구
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• 제26권3호
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• pp.587-596
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• 2014

The study aims at suggesting the direction of industrial utilization for harmful jellyfish which appears in large quantities in the Korean coastal areas. If the technology of industrial utilization for the jellyfish is developed, it will be possible to grow the industry to the export industry due to the mass appearance of jellyfish in Korean coastal areas. The industrial utilization of jellyfish should follow the direction of minimizing the damage by the jellyfish blooms and maximizing the resource recycling of the jellyfish. Therefore, Korea needs construction of infrastructure for the industrialization and promotion of R&D in order to activate the industrial utilization. Finally, the study suggested issues and tasks for promoting the industrial utilization of jellyfish as follows. First, Korea should stabilize the high quality raw material supply system. Second, mass processing technology should be developed for the industrial utilization of the jellyfish. Third, research and manual development should follow for the preparation of turning the jellyfish to the food. Fourth, extraction technology of useful non-food substance such as extracting collagen from jellyfish should be developed and accelerate the industrial utilization of non-food area.

• 한국측량학회지
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• 제20권2호
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• pp.145-153
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• 2002

국토의 효율적인 관리와 이용 및 계획은 사회 공동체의 이익은 물론이거니와 국가 발전에 이바지하는 중요한 기초가 된다. 이러한 국토 관리와 계획을 수립하기 위해 가장 먼저 선행되어져야 하는 것은 국토에 대한 올바른 조사와 정보의 획득이다. 원격탐사에 의한 국토조사방법은 적은 시간에 적은 인력을 동원하여 양질의 조사 결과를 얻을 수 있는 가장 합리적인 방법이다. 본 연구에서는 남한강 유역을 포함하는 1980, 1985, 1990, 1995 및 2000년대의 Landsat 영상을 이용하여 영상분류를 실행하고 토지피복 변화량을 분석하였으며 남한강 유역의 관리를 위한 유용한 정보를 제시하였다. 특히, 댐의 건설과 산업화 등에 기인하여 수역의 증가와 산림 및 농경지의 감소가 확연히 나타나 있음을 본 연구의 결과를 통해 알 수 있었다.

• 한국조경학회지
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• 제25권1호
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• pp.100-111
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• 1997

Owing to the urbanization, the industrialization and joining to WTo, there are lots of fallow and abandoned farmlands in Korea. Those results have occurred inefficient land use and destruction of agricultural ecosystem with the secondary succession and invasion of alien weeds. Using these fallow and abandoned farmlands, Korean government tries to create the ecological parks for the nature conservation, amenity, education and research, etc. For these purposes, materials on the ecological park construction were gathered from abroad such as England, Germany, Switzerland and Japan and also field trips to those countries were executed in April,1996. Accordingly, the goal for the ecological parks could be set suitably to Korean situation as of Japanese styles which are characterized by man-made biotopes. For a case study, dragonfly was selected as an indicator of the rehabilitation of water-side ecosystem, arid a site was selected for the dragonfly biotope under the criteria of selection to the Experimental Farm of Korea University including near abandoned farmlands (Dogok-ri, Wabu-eup, Namyangju city Kyunggi-do). Natural and cultural factors of this site were inventoried and analyzed, and then with the results dragonfly biotope was planned to the site with the detailed ecotechnology.

• Structural Engineering and Mechanics
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• 제73권5호
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• pp.543-554
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• 2020

This paper aims to investigate the seismic performance of RC short columns and long columns with welding stirrups. Through the low-cyclic horizontal loading test of specimens, the seismic performance indexes such as failure modes, hysteretic curve, skeleton curve, ductility, energy dissipation capacity, stiffness degradation and strength degradation were emphatically analyzed. Furthermore, the effects of shear span ratio, stirrups ratio and axial compression ratio on the performance of specimens were studied. The results showed that the seismic performance of the RC short columns with welding stirrups were basically the same as that of the RC short columns with traditional stirrups, but the seismic performance of RC long columns with welding stirrups was better than that of RC long columns with traditional stirrups. The seismic performance of RC short columns and long columns with welding stirrups could be improved by increasing stirrup ratio and shear span ratio and reducing axial pressure ratio. Moreover, the welding stirrup have the advantages of steel saving, industrialization and standardization production, convenient construction, and reducing time, which indicated that the welding stirrups could be applied in practical engineering.

• Structural Engineering and Mechanics
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• 제82권1호
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• pp.55-67
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• 2022

The precast reinforced concrete frame system is a method for industrialization of construction. However, the seismic performance factor of this structural system is not explicitly clarified in some existing building codes. In this paper, the seismic performance factor for the existing precast concrete building frame systems with cast-in-situ reinforced shear walls were evaluated. Nonlinear behavior of the precast beam-column joints and cast-in-situ reinforced shear walls were considered in the modeling of the structures. The ATC-19's coefficient method was used for calculating the seismic performance factor and the FEMA P-695's approach was adopted for evaluating the accuracy of the computed seismic performance factor. The results showed that the over-strength factor varies from 2 to 2.63 and the seismic performance factor (R factor) varies from 5.1 to 8.95 concerning the height of the structure. Also, it was proved that all of the examined buildings have adequate safety against the collapse at the MCE level of earthquake, so the validity of R factors was confirmed. The obtained incremental dynamic analysis (IDA) results indicated that the minimum adjusted collapse margin ratio (ACMR) of the precast buildings representing the seismic vulnerability of the structures approximately equaled to 2.7, and pass the requirements of FEMA P-695.

• 대한환경공학회지
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• 제36권1호
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• pp.58-66
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• 2014

도시화 및 산업화 등의 영향으로 인한 도시하천의 수질오염 문제가 사회적 관심의 대상이 되고 있다. 특히, 신도시의 개발로 인하여 유역 내 물순환 특성이 급격하게 변화한다는 사실을 고려할 때, 이에 영향을 받는 도시하천의 장래수질에 대해서도 많은 우려가 제기되고 있다. 그러나 아직 개발이 완료되지 않은 신도시의 장래수질을 정량적으로 예측하는 합리적인 방안은 현 시점까지도 제시되지 못하고 있는 실정이다. 따라서 본 연구에서는 환경부가 장기간의 모니터링 결과에 기반하여 제시한 토지계 지목별 발생부하 원단위를 분포형 강우유출모형인 SWMM (Storm Water Management Model)에 연계 적용함으로써 장래 신도시 내 도시하천의 수질을 거시적으로 예측하는 방법론을 제시하는 한편, 현재 신도시 개발이 진행되고 있는 G 신도시 내 대상유역의 장래수질 예측을 위하여 이를 활용함으로써 그 적용성을 검증하였다. '연단위 유량가중 평균농도 (Y-EMC; Yearly based Event Mean Concentration)' 개념을 도입하여 신도시 개발 이후의 장래수질을 예측한 결과, BOD 18.7 mg/L, T-N 16.2 mg/L 및 T-P 0.85 mg/L로 산정되어 목표수질인 하천생활기준 III등급의 달성이 어려운 것으로 나타났으며, 생활계 배출부하량을 80% 이상 저감시켰을 때 이 기준을 만족할 수 있는 것으로 예측되었다. 본 연구의 결과는 신도시 개발에 따른 장래 토지이용 특성의 변화에 대응하여 도시하천의 수질을 효율적으로 예측 관리하기 위한 기초적인 방법론으로 활용될 수 있을 것으로 판단된다.

• 대한공간정보학회지
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• 제22권4호
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• pp.99-106
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• 2014

1960년대 이후 산업화와 도시화에 따른 무분별한 산림파괴로 인하여 산림 및 생태계가 급속도로 파괴되어왔다. 이에 따라 산림 및 생태계관리를 위하여 식생지도를 제작하기 위한 연구가 전 세계적으로 활발히 진행되어왔다. 우리나라 역시 1986년 제1차 자연생태계 전국조사를 시작으로 하여 현재 제4차 전국자연환경조사가 진행 중에 있으며, 1995년 이후 NGIS사업을 추진함으로써 환경부의 환경공간정보서비스를 통해 식생 관리를 위한 움직임이 활발히 진행되고 있다. 그러나 현재 환경부의 환경공간정보서비스를 통해 제공되는 식생 및 식물상 정보는 텍스트 기반의 우점 식생정보만 제공되고 있으며, 전국자연환경조사 중 일부 자료만 구축되고 나머지 정보는 구축되어 있지 않아 통합적인 식생자료를 관리하기 위한 시스템의 구축이 매우 시급한 실정이다. 따라서 본 연구에서는 환경공간정보서비스에서 제공하고 있는 식생정보의 구축 및 제공에 관한 문제점을 제시하고, 이를 해결하기 위한 방안으로써 식생정보 통합관리시스템의 구축 방안을 제시하였다. 그리고 보다 다양하고 정확한 분석과 계획수립, 의사결정지원을 위하여 관련 시스템과의 연계 구축을 통한 식생정보 활용방안을 제시하였다.