• Journal of Korea Water Resources Association
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• v.53 no.12
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• pp.1183-1192
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• 2020

Economic analysis is a basic step in establishing disaster mitigation measures, but it is difficult to verify the results due to uncertainty. Therefore, the scope of investigation and analysis is wide. However, it is difficult to predict the amount of damage caused by flooding because the collection of relevant data is limited in the ungauged basin. In this study, distributed runoff analysis and flooding analysis were performed, and a method of estimating the amount of flood damage in the ungauged basin was proposed using collectible social and economic indicators and flood analysis results. For distributed runoff analysis and flooding analysis, GRM (Grid based Rainfall-runoff Model) and G2D (Grid based 2-Dimensional land surface flood model) developed by Korea Institute of Civil engineering and Building Technology were used. The method of substituting collectible social and economic indicators into the simple method and improvement method was used to estimate the amount of flood damage. As a result of the study, it was possible to estimate the amount of flood damage using satellite data and social and economic indicators in the ungauged basin.

• Land and Housing Review
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• v.13 no.1
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• pp.67-84
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• 2022

This study aims to investigate the value of greenbelts exploring how they can be linked with green infrastructure networks. This research interprets the results of geographical information system (GIS) analysis differently from a conventional approach. The findings of the research are four-fold based on the analysis of the Daejeon Metropolitan Area. First, the most controversial greenbelts are laid on Yuseong-gu because the relaxation of the greenbelts for new housing development has caused outstanding issues since the early 2000s. Decisions on further relaxation or restoration of the greenbelts, which will provide a new direction for the establishment of green infrastructure networks, should be made through accurate environmental assessments. Second, the connected north-south corridors of large cities will affect the greenbelts not only in Daejeon, but also in the entire Chungcheong Provinces, and surrounding local municipalities, which should be considered for the revision of the greenbelt policy. Third, it is expected to experience growing development pressures towards neighboring municipalities due to the ongoing strict greenbelt policy. Among them, the most likely areas are Sejong City to the north and Nonsan to the south, requiring policy measures. Fourth, the value of green infrastructure should be added to current evaluation criteria rather than a binary approach - relaxing or preserving the greenbelts - to be holistically integrated with a metropolitan plan.

• The Journal of the Korea Contents Association
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• v.22 no.10
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• pp.703-722
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• 2022

The concentration of local businesses in the capital region promotes a decrease in the local population and polarization between the capital region and non-capital regions. It affects the competitiveness of local industries and creates a vicious cycle throughout the local economy, society and culture. Therefore, this study classified the companies in the capital region and non-capital regions by group and examined the effect of the innovation capability factors of companies on the creation of business performance. We analyzed the effects of R&D capabilities, which are elements of innovation capability, and open innovation and convergence capabilities on business performance. Smart PLS 3.0 was used for analysis including direct and indirect mediating and moderating effects, multi-group analysis, and structural equation model analysis. As a result, R&D capability did not have a significant effect on business performance, but it has a positive influence towards business performance through convergence capability and open innovation. However, the effectiveness of open innovation in non-capital regions and convergence capabilities in capital region were not statistically significant. In particular, in terms of open innovation, as the difference between groups is statistically clear, follow-up measures are suggested especially in non-capital regions.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.36 no.5
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• pp.383-393
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• 1991

Lodging of rice plant is the most important damage by unfavourable weather conditions in rice cultivation. High levels of nitrogen application and growing of Japonica rice variety is one factor to increase the lodging damage. Lodging of rice plant decreasing grain yield; 34% at milky. 21% at dough. 20% at yellow stage. decreasing grain Quality. increasing green rice. and increasing labor cost to harvest. To decrease lodging damage. the lodging resistant varieties will be selected and cultural practices such as amount and time of nitrogen application. planting density. water management. and disease and pest control methods have to be study for the short and strong culm. and good rooting system. Also. application methods such amount and time of plant growth regulators and new types of chemicals will be develop for the reducing lodging of rice plant. To decrease the lodging damage in direct seeding cultivation. first identifying the differences of lodging mechanisms between hand transplanting and direct seeding, second establish the suitable direct seeding methods such as seedling establishement. fertilization. and water menagement.

• Journal of the Society of Disaster Information
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• v.19 no.3
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• pp.673-688
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• 2023

Purpose: Fires that occur during construction are infrequent, but cause great damage. Recently, with the growth of the logistics and distribution industry, the number of construction sites for new logistics warehouses is increasing, so it was selected as a research subject and research was conducted to reduce accidents at construction sites through the development of a fire risk assessment tool to quantitatively approach fire prevention. Method: A comprehensive fire risk assessment tool was accumulated by classifying the work in progress, classifying combustibles and ignition sources by grade, excluding air (oxygen), which is difficult to control, and additionally substituting evacuation safety. Result: Using the developed and proposed fire risk evaluation tool, excavation work with low fire risk, facility construction with medium fire risk, and finishing work with high fire risk were sampled to derive the result (CGI). Conclusion: In this study, it was possible to establish specific preventive measures and evaluate evacuation safety by controlling physical conditions (combustibles) and energy conditions (ignition sources) according to the risk assessment by developing a tool that can evaluate the risk of 14fire occurrence at construction sites. It is expected that in the future, through the application of the fire risk evaluation tool at construction sites, it will be provided as a criterion for establishing a process plan that can reduce risk and evaluating the adaptability of firefighting equipment.14

• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.252-252
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• 2020

대하천 주변 광역상수도 공급지역은 가뭄 발생시에도 안정적으로 물이용이 가능하나, 중소하천을 수원으로 하는 하천의 상류지역은 가뭄시 물공급 안정성이 취약하다. 따라서 중소하천을 대상으로 가뭄시 물 공급시설의 효율적 운영, 물부족 위험도 평가, 가용 수자원의 최적이용 등 종합적인 대책 마련을 위해서는 신뢰성 높은 수문량(하천유출량 및 수자원가용량) 예측이 필요하다. 기존의 가뭄시 하천유출량 예측정확도 평가는 통계적 회귀분석을 통한 가뭄지수 기반의 가뭄상황의 예측에 치중하여 불확실성이 크며 국내 유역의 복잡한 물이용체계를 고려하지 않아 시·공간적인 규모에 따라 상이한 결과를 나타내며 실측자료 기반의 하천유출량과 비교하면 정확도가 대부분 60% 이하로 나타난다(이상은 등, 2015). 본 연구에서는 상세 물이용체계를 고려한 정도높은 수자원가용량의 평가를 위하여 한강권역 내의 한탄강댐 상류 유역을 테스트베드로 선정하였다. 한탄강댐 상류유역은 다수의 복잡한 농업용 수리시설 운영에 따른 수자원가용량 예측정확도가 매우 낮은 지역으로 본 연구를 통해 정도 높은 수자원가용량 예측정확도를 확보하기에 적정한 유역이라 판단하였다. 수자원가용량을 평가하기 위한 모형은 한국건설기술연구원에서 개발된 CAT3.1(Catchment hydrologic cycle Assessment Tool 3.1)을 이용하였다. CAT 3.1은 중소하천 유역내의 인위적인 물이용체계(광역급수, 재이용, 지하수 취수, 하천수 취·배수 등)를 반영한 수문량(하천유출량 및 수자원가용량) 평가 및 예측이 가능한 모형으로 기존 개념적 매개변수 기반의 집중형 수문모형과 물리적 매개변수 기반의 분포형 수문모형의 장점을 최대한 집약하여 개발되었다. 한탄강댐 상류유역의 물리적 매개변수는 최대한 기 구축된 GIS 자료를 활용하여 추출하였다. 토지이용현황은 산림과 농업지역이 대부분을 차지하여 농업용수 공급이 대부분인 물이용체계를 가지고 있다. 따라서 한국농어촌공사에서 관리하는 11개 농업용 저수지에 대한 취수현황 및 제원, 국가지하수센터의 유역내 지하수사용량, 하폐수처리량을 기본 입력 자료로 사용하였다. 특히 농업용 저수지의 경우에는 저수지출구점을 기준으로 저수지 상류유역 및 한국농어촌공사에서 기 구축된 관개면적 공간자료를 기본으로 수혜구역을 세분화하여 모형을 적용하였다.

• Proceedings of the Korea Water Resources Association Conference
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• 2021.06a
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• pp.441-441
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• 2021

우리나라의 홍수조절용댐은 총 5개소로 영산강유역에 두 개소와 한강유역에 세 개소가 있다. 한강유역에 있는 세 개소의 홍수조절지용댐은 한강상류의 북한지역에서 발생하는 집중호우에 대비하기 위한 댐으로, 임진강 하류지역의 수해방지를 위한 한탄강댐과 군남홍수조절지(군남댐)가 있으며 북한강 하류와 수도권의 홍수예방을 위한 평화의 댐이 있다. 영산강유역에 있는 두 개소의 홍수조절지는 2006년에 수립한 영산강치수종합대책에서 계획이 수립된 시설로 2011년 4대강 사업의 일환으로 설치하여 K-water에서 운영 중에 있다. 4대강 사업 이전의 영산강유역은 홍수량을 조절할 수 있는 홍수조절용량이 전무했던 실정으로 하도에서 홍수량의 전량을 수용해야했던 홍수에 매우 취약한 하천이었다. 그러나 4대강 사업을 통하여 영산강유역의 4대호를 비롯한 농업용댐의 숭상을 통한 홍수조절용량의 확보와 더불어 나주천변저류지와 담양홍수조절지, 화순홍수조절지를 설치하여 홍수로부터 상대적으로 안전한 하천으로 변모할 수 있었다. 그러나 영산강유역의 다른 하나의 과제는 여전히 남아있다. 우리나라의 하천 중에서 가장 수질이 악화되어 있는 하천이라는 불명예이다. 홍수조절지는 1년 중 3개월에 해당하는 홍수기에 사용할 수 있는 시설로 1년 중 9개월에 해당하는 비홍수기에는 홍수조절지의 효율적인 공간활용을 위하여 주민지원사업 등 다각도로 고민하여 사용하고 있으나 하천 외적인 문제를 수용하는 범주에 머무르고 있다. 하천이 가지고 있는 문제점을 다소라도 해소할 수 있는 목적으로 사용될 수 있다면 하천 외적인 문제를 수용하는 것 보다 하천 내적인 문제를 해소하는 목적으로 사용하는 것이 보다 바람직할 것으로 판단된다. 이를 위하여 영산강의 내적인 가장 큰 문제점은 수질악화로 인한 수질개선이라 할 수 있다. 따라서 홍수기로 한정되어 사용하는 홍수조절지를 해당하천의 내적인 문제를 다소라도 해소할 수 있는 공간으로 비홍수기에 기여할 수만 있다면 비홍수기의 활용목적을 확대하여 다목적조절지로의 변모가 필요하다고 판단한다. 따라서 본 연구에서는 영산강유역에 있는 담양홍수조절지와 화순홍수조절지의 두 개소 홍수조절지를 활용하여 영산강 수질개선에 기여할 수 있는 정도를 파악하였다. 비홍수기에 유출량의 일부를 조절지에 담수해 두었다가 수질개선 목적의 희석수로 방류하는 시나리오를 마련하여 시나리오별로 영산강의 수질개선효과를 분석하여 제시하였다. 수질개선효과를 분석하기 위하여 EFDC모델을 구축하고 모델 수행을 위한 시나리오는 조절지의 담수율과 방류량 그리고 조절지의 관리수질조건 등을 이용하여 작성하고 수질예측 결과에 따라 TOC, CHl-a, T-P 수질항목을 대상으로 수질개선효과를 분석하여 제시하였다.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.30 no.6D
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• pp.685-695
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• 2010

This is the study on the current status and system of the elderly medical and welfare facilities with the subjects in Busan. I investigated the problems related to those by analysing the current status and implementing a survey and then suggested a new facility system as a salvation. At present, the elderly medical and welfare facilities can not receive variety of inmates and also they are operated separatedly so the elderly is not able to receive special treatment and nursing at the same time in one facility. Some nursing facilities can give special treatment by connecting specific hospital when it is necessary, but the connection is not activated than our expectancy at the present. On the base of these problems, this study suggested 'one-stop service system' that can afford to give nursing and special treatment in a place ranging wider areas as the solution. The five types of facility system by integrating the results of survey are as followings. 1) Free special nursing facility + The geriatric hospital. 2) The profit special nursing facility + The geriatric hospital. 3) The geriatric hospital + The hospital rooms with silver town residence type. 4) The actual expense special nursing facility + The geriatric hospital + The hospital rooms with silver town residence type. 5) The geriatric hospital + The residential welfare service. It seems that the preparation for the elderly is urgent when considering the facilities related to those are not special any more because every one is supposed to use them some day. The kinds and the degree of elderly's diseases will be more duplicated and significant afterwards. Therefore it is expected that more various and specialized facilities are to be required.

• Korean Journal of Culture and Social Issue
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• v.22 no.3
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• pp.387-410
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• 2016

This study conducted a review of the existential and psychological perspective about the risks and safe. The risk was identified as existential task through the existential philosophy and psychology discussed were the safety regulations as existential need. As existential anxiety that is caused by unmet and insufficiency of the existential needs and the existential task that was presented to identify the subjective risk. Subjective risk as existential anxiety, and suggested that serves as a compass to advance to the completion and the facing the existential. In addition, existential anxiety as a subjective function as a signal that can identify the problem conditions that expressed phenomena. Problematic aspect of a subjective risk was suggested that it can be adjusted through a method for supplying information that can be recognized by an experienced and symmetrical state with the direction of the expressed symptoms. The attempt to determine the existence of and psychological point of view, it gave provided the underlying psychological spokesman for the analysis of human society, including the Sewol ferry of Korea-type disaster. There are also presented some implications that can be applied effectively to give more psychological approach to future risk reduction and safety enhancement. In addition, this study through the various views presented by a comprehensive existential subject of several ways to adjust the status Theme conditioning method (Theme Condition Adjustment Theory: TCAT) to establish a theoretical basis for expecting it to be that.

• Korean journal of applied entomology
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• v.62 no.3
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• pp.117-124
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• 2023

The management of Ricania spp. is difficult because this pest has a wide host range and diverse habitats such as agricultural, suburban, urban, and forested areas. However, the researches for Ricania spp. management have been focused on only agricultural crops. Thus, it is required to determine the arboreal host preference of Ricania spp. at the surrounding areas of the farms to increase its management efficiency. To determine its host preference at arboreal plants, we reviewed the previous studies and investigated the densities of Ricania spp. at woody plants with high ecological importance but insufficiently studied. This study identified 120 species in 53 families of arboreal hosts of Ricania spp. Only Cornus officinalis and Styrax japonicus were preferred by all developmental stages of Ricania spp. The host preference of Ricania spp. was changed according to its developmental stages. This phenomenon would be caused by that each developmental stage of Ricania spp. would prefer different parts of woody plant, and require different nutrients for its survivor and reproduction. These results of this study could be helpful to make a plan of comprehensive management strategies for Ricania spp.