• Earthquakes and Structures
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• 제10권3호
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• pp.629-643
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• 2016

Among all the natural disasters, earthquakes are the most destructive calamities since they cause a plenty of injuries and economic losses leaving behind a series of signs of panic. The present study highlights the moment-curvature relationships for the structural elements such as beam and column elements and Non-Linear Static Pushover Analysis of RC frame structures since it is a very simplified procedure of non-linear static analysis. The highly popular model namely Mander's model and Kent and Park model are considered and then, seismic risk evaluation of RC building has been conducted using SAP 2000 version 17 treating uncertainty in strength as a parameter. From the obtained capacity and demand curves, the performance level of the structure has been defined. The seismic fragility curves were developed for the variations in the material strength and damage state threshold are calculated. Also the comparison of experimental and analytical results has been conducted.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2004년도 Proceedings of ISRS 2004
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• pp.318-321
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• 2004

The damage scale and damage area in the coast have been increased dramatically because of calamities such as typhoon. tidal wave. flood and storm. Especially. 409 cases. which reach to about $40.9\%$ of natural disasters of 1,000 cases for the recent 15 years have happened on coast area. More than $40\%$ of natural disasters also occurred every year is happening in coastland. Therefore, there is a great need to construct all related GIS database such as atmospheric phenomena (typhoon. tidal wave, flood and storm). harbor facility, harbor traffic and ebb and flow. Furthermore. the certain system should be developed and integrated with NDMS (National Disaster Management System) by using 3D web GIS technology. In this study. the coast disaster area management system was designed and developed by using 3D web GIS technique so that the coast disaster area could be monitored and managed in real time and in visual. Finally. the future disaster in coast area could be predicted scientifically.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2010년도 추계 학술발표회
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• pp.749-758
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• 2010

Embankment Slope (or Fill Slope) is defined as artificial slope formed by the filling of soil or rocks on the original ground. Recently a lot of embankment failures and collapse has occurred due to the increase of torrential rainfall and typhoons. Embankment collapse has lead to a great loss of lives and property therefore there is a need to establish a systematic embankment slope management system that will handle the maintenance and repair of risky embankment slopes. The objective of this study is to establish an "Embankment Slope Management Method" for embankment slopes located along national highways all over Korea. The method for field investigation of embankment slopes was recommended and the system for investment priority determination was also developed. The factors that lead to the collapse of embankment slopes caused by natural calamities were also determined through the initial survey of embankment slopes located along river fronts and mountainous areas.

• International Journal of Computer Science & Network Security
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• 제22권10호
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• pp.177-182
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• 2022

Technology is progressing with every passing day and the enormous usage of electricity is becoming a necessity. One of the techniques to enjoy the assistances in a smart home is the efficiency to manage the electric energy. When electric energy is managed in an appropriate way, it drastically saves sufficient power even to be spent during hard time as when hit by natural calamities. To accomplish this, prediction of energy consumption plays a very important role. This proposed prediction model Coherent Weighted K-Means Clustering ARIMA (CWKMCA) enhances the weighted k-means clustering technique by adding weights to the cluster points. Forecasting is done using the ARIMA model based on the centroid of the clusters produced. The dataset for this proposed work is taken from the Pecan Project in Texas, USA. The level of accuracy of this model is compared with the traditional ARIMA model and the Weighted K-Means Clustering ARIMA Model. When predicting,errors such as RMSE, MAPE, AIC and AICC are analysed, the results of this suggested work reveal lower values than the ARIMA and Weighted K-Means Clustering ARIMA models. This model also has a greater loglikelihood, demonstrating that this model outperforms the ARIMA model for time series forecasting.

• 한국잡초학회지
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• 제31권4호
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• pp.394-400
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• 2011

중국에서 발상되어 우리나라에서 일반화하였던 고대 농법 혼파는 재해대책의 하나로서 최소한의 식량곡물을 확보하는 수단이었다. 이들 기술에 대한 역사적 흐름도를 중국농서인 "제민요술"(5세기 전후)와 "왕정농서"(1313)부터 우리나라 고대농서인 "농사직설"(1429)"한정록"(1610) "색경"(1676) "증보산림경제"(1766) "과농소초"(1799) "임원경제지"(1843)로부터 인용 제시하였다. 이들 혼파원리를 응용하는 무비 무농약 벼 이품종 혼파법은 아졸라 투입 무경운 벼 다품종 직산파를 전제로 하여 새로운 생력친환경 농법으로 제시하였다. 아울러 기존 연구결과들을 인용하여 현실적 타당성을 제시하여 평가하였다.

• 한국초등과학교육학회지:초등과학교육
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• 제26권1호
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• pp.63-75
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• 2007

This study investigated how the contents of biology domains that were dealt with in the 7th national elementary-school science curriculum were in turn dealt with in the other subject matter areas. Through this, it was hoped that the place and identity of biology as a subject could be more clearly established and defined and additionally, more basic data for developing the new national science curriculum could be acquired at the same time. Subject matter areas that overlapped with biology in the 7th national elementary-school curriculum were practical arts, social studies and physical education. The structure and composition of specific components that were dealt with by these subject matter areas were very different from those of science, and the analysis showed that they failed to correspond across grades. Moreover, topics such as 'natural calamities and the environment' and 'human reproduction' that were dealt with by other subject matter areas, but not in science must be included for developing the new national science curriculum. Accordingly, when it comes to composing the contents of each subject matter area during creation of the new national curriculum, the relevant experts in related subject matter areas should be mobilized to conduct in-depth analysis of the following areas: viability, the most appropriate level of difficulty, and appropriateness of any hierarchy of relative importance between subjects. Additionally, efforts to reflect any improvements in the way the new national curriculum is developed which come about through this research are needed.

• 한국화재소방학회논문지
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• 제19권2호
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• pp.81-92
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• 2005

각종 재난으로부터 국민의 생명과 재산을 신속하고 정확하게 구조$\cdot$구급하는 것은 국가의 당연한 책무이다. 소방방재청의 출범으로 재난으로부터 국민의 생명과 재산 보호를 최우선하는 국가 정책이 실현될 수 있는 기틀이 마련되었다. 그럼에도 불구하고 아직 만족할 만한 재난대비가 이루어졌다고 볼 수 없다. 각종 재난이 발생할 때마다 대응체계의 문제점이 항상 지적되어 왔다. 특히 위난시 긴급구조와 구급의 체계는 아직 선진국 수준에 도달하려면 많이 부족하다. 재난과 관련한 대응에서는 예방과 대비가 무엇보다도 중요한 일이다. 그러나 현재의 재난은 특별한 예고 없이 발생하는 것이 특성이니 만큼 발생이후 신속한 구조와 구급 대비체계를 확립하는 것 또한 매우 중요한 일이다. 먼저 긴급구조$\cdot$ 구급과 관련한 법령의 과감한 통$\cdot$폐합을 통하여 구조$\cdot$구급체계를 일원화할 수 있는 제도적 기틀이 마련되어야 한다. 이를 통하여 구조 구급체계의 전문화와 현장대응능력을 강화하여야 한다. 또한 실제로 긴급구조와 구급을 담당하는 119구조$\cdot$구급대의 인적$\cdot$물적 장비의 보강을 통하여 구조$\cdot$구급의 능력을 향상시켜야 한다

• 대한전자공학회논문지TC
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• 제45권9호
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• pp.67-74
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• 2008

본 논문은 네트워크카메라 기반 영상감시시스템에서 발생하는 단위 네트워크 간 영상정보 공유 불가, 사용자 증가에 따른 대역폭 및 처리부하 증가, 네트워크 변경내역 지속적 모니터링 불가 둥의 문제를 해결하기 위한 서버의 구조를 제안하고 이를 설계 및 구현하였다. 제안한 서버는 영상분배 기능을 제공함으로써 기존의 문제들을 해결하면서도 대용량 영상감시시스템을 위하여 다수의 네트워크카메라 및 다수의 사용자에 대한 관리와 서비스가 가능하도록 설계되었다. 구현한 영상분배서버를 실제의 영상감시시스템에 적용하여 실험한 결과 100여대의 네트워크카메라에 대한 접속을 유지하는 상황에서 수백여 사용자의 동시 접속을 처리하면서도 납득할 만한 서비스 픔질을 유지함을 확인하였다. 본 논문의 영상분배서버를 활용하면 교통상황 정보 및 재난재해 감시 등의 대국민 서비스를 위한 대용량 영상감시시스템의 서비스 품질 향상에 기여할 것으로 기대된다.

• Current Research on Agriculture and Life Sciences
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• 제2권
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• pp.42-55
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• 1984

The direction of scientific researches on tree improvement and forest management in several universities and research institutes in Japan can be summarized as follows: They put a great emphasis on sugi, Cryptomeria japonica and cypress, Chamaecyparus oblusa which are two major conifer species largerly planted in the Japanese forestry. In the research of sugi, a great concern has been made in evaluating inheritance of forest tree, quantitative characters and genetic parameter of growth, and in breeding for resistance to diseases and insects and to all the natural calamities. Interaction between environmental conditions and genetic nature of tree can be concerned factors in relation with forest damage, together with silvicultural conditions and pest infestation. Selfing hybrids of $F_1$ made from crossing twisted-leaf sugi, defomity leaf type and midori sugi, normal leaf type segregated the normal needle, twisted needle, green leaf and albino leaf type. It seemed that separation of many defomity individuals can be governed by two dominant complementary genes and from the near loci of which it was detected lethal genes. 52% of Japanese forestry is occupied by the small forest landowners like Korean forestry. This made difficulty for forest improvement such as progressive afforestation and for capital accumulation form forestry. The Forest Corporation was established at first in 1959 to aming at productive forestry structure and forest management, and afforestation. For these purpose, 35 Forest Corporations are at moment operating throughout Japan. However, investment in forestry business becomes less attractive since the wage in forest production duction increased in higher trend. than timber price. Therefore, an artifical afforestation becomes yearly decreased. At present. the self-sufficient rate of timber production in Japan is about 35%, and so a great effort is being made to increase self-sufficient rate of timber production.

• 사회복지연구
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• 제42권4호
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• pp.5-34
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• 2011

최근에 들어 대규모의 재난으로 인한 인명과 재산의 피해를 보면서 재난정신건강에 대한 관심의 필요성이 부각되고 있다. 본 연구는 재난 피해자의 정신건강 문제의 발생과 회복과정의 다양한 사회경제적 영향요인 등에 관한 실증적 연구와 이론적 논의에 대한 검토를 근거로 다차원적 재난정신건강 서비스 모델을 제시하였다. 재난피해자의 정신건강문제는 재난이란 외상적 경험과 개인내적 특성에 의해 영향을 받지만, 재난 복구 과정에 개인과 지역사회가 겪는 사회·경제·정치적 경험이 정신건강문제에 지대한 영향을 주는 것으로 나타났다. 이에 재난피해자에 대한 임상적 개입에만 초점을 두는 전통적 재난정신건강모델보다는 재난 피해자 개인과 지역공동체, 이들을 둘러싸고 있는 다양한 환경체계에 대한 다각적인 개입을 포함하는 다차원적 재난정신건강 서비스로의 전환을 제안하였다. 다차원적 모델은 전통적인 사회복지의 개입전략들을 활용하면서 재난 피해자 개인과 지역공동체의 정신건강과 사회경제적 정의를 실현할 수 있는 다양한 차원에서 개입 전략과 사회복지분야가 취해야 할 방향을 제시하였다.