• 한국안전학회지
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• 제35권2호
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• pp.84-93
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• 2020

In recent years, the scale of damage from disasters such as earthquakes and large-scale fires and floods that are occurring in Korea is increasing. Accordingly, interest in urban disaster prevention that combines living infrastructure such as roads and parks is boosting, and it is urgent to prepare measures to reduce the damage scale of local cities. The purpose of this study is to derive implications for disaster prevention measures in areas where disaster prevention safety of local cities is weak through examples of disaster prevention safety of local cities in case of disaster. To this end, this study analyzed the regional characteristics, current status, and disaster prevention problems of regional cities in Japan, and selected disaster-vulnerable areas, and considered the distance relationship between disaster prevention bases through road network analysis. In addition, road closure simulation using ArcGIS Network Analyst was conducted to analyze disaster prevention safety in the area. As a result, the situation of the village which has a high possibility of isolation by natural disasters was grasped in advance. Through this, the suburbs confirmed the necessity of supplementing the disaster prevention function through transportation maintenance such as forest roads, and it was found that the city needs to prepare a risk management system. Furthermore, this study suggests the need for research on areas with a high possibility of isolation, especially in areas where disaster prevention functions are weak in local cities in case of disaster, and shows countermeasures for disaster prevention measures and resident education.

• 한국제4기학회지
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• 제13권1호
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• pp.53-65
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• 1999

기후변화와 이에 따르는 식생변화, 인위적인 토지이용 변화 등 '지역환경생태시스템의 변화'에 대한 '지역 물수지변화' 추정은 오직 필자가 개발한 BROO $K_{TOP}$과 같은 '물리기반 물수지 모델(Physical based Water Balance Model)'류에 의해서만 가능하다. 본 연구에서는 독일 중북부 농업지대와 산림지대에 대해서 $BROOK_{TOP}$ 소프트웨어를 이용하여 정립된 물리기반 지역물수지모델에 독일 포츠담 기후변화연구소(PIK) 시나리오와 체코 프라하대학에서 개발한 중부유럽 대상 GCM 기후변화 시나리오를 적용하여 물수지변화를 추정하였다. 이와 같은 기후와 지표.지하조건을 고려 한 지구온난화에 따른 수자원변화 예측시스템 개발은 하천수$\cdot$지하수 개발 및 수질 관리, 농업경작관리, 환경생태계 관리, 자연 재해 관리, 토지이용계획 및 지역개발계획 등을 위한 시스템개발의 기반이 된다

• 한국콘텐츠학회논문지
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• 제20권5호
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• pp.291-302
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• 2020

아이돌이 주도하는 한국의 대중음악은 이제 전세계적인 팬덤을 확보하였다. 이로 인해, 아티스트를 넘어서 한국의 경제 상황에도 커다란 영향력을 행사하고 있다. 즉, 아이돌 그룹 하나가 크게 히트를 치면 조 단위의 외화를 벌어들일 수 있게 된 것이다. 따라서 아이돌 그룹을 성공시키고 이를 유지시키는 것이 상당히 중요한 과제로 떠올랐다. 본 연구에서는 소속사가 손익분기점으로 삼는 데뷔 후 3년차 및 평균적인 재계약 직후 시점인 8년차 아이돌의 생존여부를 인공신경망, 의사결정나무, 랜덤 포레스트를 활용하여 예측해보고자 한다. 그리고 생존에 있어 무엇이 중요한 요인인지를 나무 모델의 특성중요도 및 로지스틱 회귀분석을 활용하여 설명하였다. 그 결과, 데뷔 시점의 경쟁자 수, 최초 그룹의 구성원 수, 다루는 장르의 수 등의 요인이 유의하다는 결론을 얻을 수 있었다. 이를 통해, 최종적으로 아이돌 그룹을 보다 효율적으로 기획, 관리함으로써 산업 경쟁력을 증진할 수 있을 것으로 기대한다.

• 한국멀티미디어학회논문지
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• 제22권11호
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• pp.1324-1337
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• 2019

This study set out to investigate an energy harvesting device to ensure stable energy supply to batteries and data collection devices and a monitoring system for acer pictum sap to check collected data. Acer pictum sap farmers have written down weather information and yield of acer pictum sap manually for data storage. Since the job is done manually, there are many missing values in their data. In addition, it is not easy to manage batteries due to the characteristics of the areas where acer pictum sap is collected. The present study thus decided to build an energy harvesting device based on new renewable energy to ensure stable energy supply by taking into consideration power load, daily power consumption, and number of days with no sunshine for various devices. For a monitoring system, the investigator proposed a JSP-based web page to monitor temperature, humidity, volume of collected water, and battery state in real time. The proposed energy harvesting device was applied to reduce missing values in data. It promoted stable energy supply to the batteries and data collection devices, reducing the percentage of missing values in data from 30.55% to 0%.

• 한국조경학회지
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• 제34권3호
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• pp.1-11
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• 2006

This study analyzed characteristics of natural and human environments in Chuncheon's Gongji stream, and suggested nature-friendly planning strategies for self-purification of water quality, biodiversity improvement and conservative waterfront recreation. The environmental analysis included streambed structures, floodplain soils, water quality, vegetation, wildlife, and human facilities. Natural colonization of vegetation for the middle section of the study stream was obstructed by a straightened concrete revetment of baseflow channel, and vehicle movement and concrete parking lots across the floodplain. These human disturbances also deteriorated the naturalness of the stream landscape and limited habitation of bird species. However, natural sedimented wetlands in half of the channel width for the lower section of the stream contributed to a desirable vegetational landscape and greater bird occurrence. Based on BOD measurements, water quality of the stream fell under class $II{\sim}III$ of the stream water-quality standard, but it was worse around sewage outlets due to incomplete sewage collection especially during the dry season. Dominant fish species included typical inhabitants of good water-quality streams that are tolerant of adverse habitat changes. Nature-friendly planning strategies were established based on analysis of the environmental characteristics. They focused on not merely spatial zoning and layout divided into four zones - preservation, partial preservation, conservation and use -, but close-to-nature channel revetment techniques, natural water-purification facilities, biotope diversification, and water-friendly recreation and circulation. Strategies pursued both renewal of stream naturalness and hydraulic stability of streamflow by minimizing transformation of natural channel micro-topography and biotope, and by reflecting natural traces of streambed structures such as revetment scour and sedimentation.

• 환경위생공학
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• 제8권2호
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• pp.25-48
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• 1993

International concern over the environmental pollution is ever increasing, and diversified countermeasures must be devised in Korea also. Global trend, damages, problems and countermeasures with respect to issues mentioned in the Rio Declaration, such as prevention of ozone layer destruction, reduction of migratory atmospheric pollution between neighboring countries, and prevention of global greenhouse effect, were discussed in this report. Conclusion of the report is summarized as follows : A. Measurement, Planning and Monitoring (1) Development and implementation of a global network for measurement and monitoring from the global aspects such factors as related to acid rain(Pioneer substances, pH, sulfate, nitrate), effect of global temperature(Air temperature, $CO_2$, $CH_4$, CFC, $N_2O$) and destruction of ozone layer($CFC_S$). (2) Establishment of network system via satellite monitoring movement of regional air mass, damage on the ozone layer and ground temperature distribution. B. Elucidation of Present State (1) Improvement and development of devices for carbon circulation capable of accurately forecasting input and output of carbon. (2) Developmental research on chemical reactions of greenhouse gas in the air. (3) Improvement and development of global circulation model(GCM) C. Impact Assessment Impact assessment on ecosystem, human body, agriculture, floodgate, land use, coastal ecology, industries, etc. D. Preventive Measures and Technology Development (1) Development and consumption of new energy (2) Development of new technology for removal of pioneer substances (3) Development of substitute matter for $CFC_S$ (4) Improvement of agriculture and forestry means to prevent the destruction of ozone layer and the greenhouse effect of the globe (5) Improvement of housing to prevent the destruction of ozone layer and the greenhouse effect of the globe (6) Development of new technology for probing underground water (7) Preservation of forest (8) Biomass 5. Policy Development (1) Development of strategy model (2) Development of long term forecast model (3) Development of penalty charge effect and expense evaluation methods (4) Feasibility study on regulations By establishing the above mentioned measures for environmentally sound and sustainable development to establish the right to live for humankind and to preserve the one and only earth.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2008년도 학술발표회 논문집
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• pp.1934-1938
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• 2008

본 연구에서는 시계열 항공영상을 이용하여 갑천의 토지이용 패턴을 제내지와 제외지로 구분하여 분석하였다. 먼저 제내지에서는 주거지, 도로, 공업지, 공공시설이 도시화 증가항목으로 선정된 반면, 농경지, 산림 그리고 하천은 도시화 감소항목으로 분류되었다. 또한 이러한 증가와 감소항목들이 1988년도를 기점으로 역전되는 경향을 나타내었으며 이를 통해 갑천의 토지이용이 1988년을 기점으로 도시화로 전환되었음을 추정 할 수 있다. 제외지에서는 시간이 경과함에 따라 현하천의 면적이 감소하는 것으로 나타났으며 이는 고수부지, 교량 그리고 보와 같은 도시화를 반영하는 토지이용 항목의 면적이 증가된 것을 의미한다. 또한 수문자료를 고려한 현하천에 대한 수계의 비율은 시간이 경과함에 따라 증가하였다. 전반적으로 볼 때, 항공영상은 하천관리 및 계획에 필요한 토지이용 정보를 구축하는데 유용하게 활용될 수 있으리라 판단된다.

• 한국지리정보학회지
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• 제22권4호
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• pp.146-157
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• 2019

본 연구에서는 해외에서는 각광을 받고 있는 해양치유를 국내에 적용하기 위한 시범연구로서 선정된 4개의 시범지자체를 대상으로 해사와 해수, 소금, 머드, 해조류, 산림, 기상 등 7개의 주요 해양치유 관련 자원을 수집하고 GIS 기반의 관련 DB를 구축하였다. 나아가 구축된 DB의 원활한 활용과 해양치유 관련 다양한 콘텐츠의 제공, 관련 산업의 활성화를 지원하기 위하여 웹GIS 기반의 해양치유포털을 구축하였다. 포털에는 GIS 기반의 해양치유에 필수인 해양자원의 주제도는 물론, 국내외 연구문헌, 해양치유요법 관련 매뉴얼과 시범 지자체의 해양치유 관련 다양한 프로그램 등을 포함하였다. 구축된 해양치유포털의 시범운영을 통하여 향후 국내 관련 산업의 활성화에 기여가 클 것으로 사료되었으며, 향후 해양치유자원의 확대 구축과 보다 다양한 콘텐츠의 확보를 위한 후속연구의 필요성도 대두되었다.

• 한국환경과학회지
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• 제23권6호
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• pp.1121-1130
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• 2014

This study aims to find the perception and utilization of the citizen about the dryness watch warning (DWW) among special weather reports. For this we have made up a descriptive questionnaire including the perception, utilization of special weather reports. Using the SPSS 17.0 program, descriptive statistics, t-test, ANOVA and Scheffe test were used to analyze the collected data. The results are as follows; The perception of DWW is measured by 4 point Likert scale and the average is $15.97{\pm}3.70$ (percentile=57.0). This value shows that the awareness level is not that high and according to the occupation, college students show the lowest awareness and housewives show the highest awareness. According to the age, the teens and twenties show the lowest awareness and fifties and sixties show the highest awareness. Although the perception of the teens and college students are rather poor, there were many positive answers that it is necessary to establish the advanced disaster prevention plan according to the questionnaire about the utilization of DWW. Therefore, if we come up with an effective plan to improve the perception than we can expect a large-effect in terms of fire and forest fire prevention. The perception of DWW can be improved by providing weather information and weather related education program on TV or internet which have the high level of preference. Also, it is necessary to provide online and offline program of advertising education and disaster management education through the weather forecast bureau which is the host organization of delivering weather information.

• Journal of Ecology and Environment
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• 제35권2호
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• pp.111-122
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• 2012

The sex ratio and spatial structure of different sexes are major components that affect the reproductive success and population persistence of dioecious plants. The differential reproductive costs between male and female plants are often believed to cause a biased sex ratio and spatial segregation of the sexes through slower growth and/or lower female survivorship. In this study, we examined the sex ratio and spatial structure of one population of $Torreya$ $nucifera$ trees in Jeju Island, Korea. We also tested the effects of the current tending actions in relation to tree vitality. At the population level, the sex ratio of the 2,861 trees was significantly biased toward males; however, it also showed considerable variation among different diameter at breast height classes and across habitats according to terrain level (from upper to lower). In 1999, before tree management (tending) began, among the ecological traits examined, only climber coverage correlated with tree vitality. Intensive tending such as climber removal since 1999 clearly enhanced the vitality of the majority of trees, but its effects were more conspicuous in medium-sized trees than in small ones, in upper terrain trees than those in other terrains, and in females than in males. Both male tree domination in small and large trees and tending effects on females are likely to reflect the effects of female reproductive costs regarding growth and/or survivorship. Spatial segregation between males and females was not observed in $T.$ $nucifera$. Habitat heterogeneity created by the forest's rocky ground and its implications regarding sex ratios and spatial structure require further studies.