시냅스 소자 적용을 위한 니켈 실리사이드 웨지구조를 가지는 저항변화 메모리 어레이

학위논문 (박사) -- 서울대학교 대학원 : 공과대학 전기·정보공학부, 2021. 2. 박병국.Advancement of Internet of Things (IoT) and artificial intelligence (AI) boosted the development of next-generational computing system – neuromorphic computing. Also referred to as brain-inspired computing, unlike currently used von Neumann architecture that processes data sequentially, this technology is able to handle huge amount of data in parallel by integrating the role of processor and memory simultaneously. Not limited to the parallel processing capability, utilizing the neuromorphic computing system would pave the way for efficient solutions to the field of automotive, healthcare and consumer electronics industries. In order to meet an expectation of next-generation in-memory computing technology, numerous research facilities deal with state-of-the-art devices that could be implemented with a hardware-driven architecture. Resistive Random Access Memory (RRAM) has been widely investigated as one of possible candidates for synaptic devices by taking advantages of its scalability, CMOS compatibility and simple structure. Using various switching materials make RRAM device attractive in terms of optimizing the energy efficiency for neural network application. Conventional metal-insulator-metal (MIM) structure has higher reliabilities to function as the synaptic device, yet comparatively high current level reaching a few mA limits RRAM to expand to large size cross-point array. To solve this problem, metal-insulator-silicon (MIS) structured RRAM device has been given attention for its relatively low current level, which suits for low power operation of neuromorphic computing system. In this dissertation, Nickel silicided (NiSi) nano-wedge RRAM array was fabricated for potential application as a synaptic device. Instead of having highly-doped Si bottom electrode (BE), NiSi has relatively lower resistivity which lead to decreased switching power consumption. Performing neural network requires a large size cross-point array operating at low energy. Utilizing NiSi BE nano-wedge RRAM not only reduce the total power, but metallic BE improves the switching reliability issues. Furthermore, NiSi BE wire in the cross-point array has largely reduced a wire resistance, which is essential during a vector-matrix multiplication (VMM) to guarantee high accuracy of data recognition. Based on fabricated nano-wedge RRAM array having both Si and NiSi BE, we performed a current summation and obtained improved results with less current loss from NiSi BE array. In addition, SPICE simulation was carried out to analyze the optimized ratio between the cell and wire resistance in order to minimize the current loss. Reduction of wire resistance by using NiSi BE on nano-wedge RRAM array not only achieved an improvement of switching parameters, it showed a feasibility of hardware implemented synaptic device for neuromorphic computing application.인류사회에서 급속도로 성장하는 사물인터넷 시대에서 지속적으로 증가하는 방대한 양의 데이터를 처리하기 위한 뇌신경망을 모방한 하드웨어에 대한 연구가 활발히 진행되고 있다. 기존에 폰 노이만 방식은 순차적으로 데이터를 처리하여 메모리 및 CPU 간의 병목현상으로 인한 실시간 패턴 인식의 정확도 및 속도의 한계에 부딪치고 있으며, 계속해서 발전하는 시대적 요구에 부응하기 위해 효율성을 극대화한 병렬 처리방식이 가능한 뉴로모픽 칩의 개발이 절실해 지고 있다. 기존의 반도체 소자 기술을 활용하여 뉴런 회로 및 시냅스 소자의 구현을 목표로 궁극적이며 신개념의 시스템반도체 개발을 목적으로 두고 있으며, 소리 및 이미지 처리 등 빅데이터를 사람의 뇌처럼 적은 에너지원으로 실시간으로 정밀한 연산 능력을 갖춘 뉴럴 네트워크 창출을 위해 글로벌 Big Tech 업계들간의 협업이 중요해지고 있다. 본 논문에서는 니켈 실리사이드 하부전극을 가지는 웨지구조의 저항 변화 메모리 어레이를 제작하여, 전기적 특성은 물론 시냅스 소자로서의 가소성에 대한 분석을 진행하였다. 먼저, 평면 저항 변화 메모리 소자를 제작하여 기본적인 전기적 특성에 대한 측정을 확인한 후, 실리콘 하부전극에 대한 비등방성 식각을 통해 소자에 대한 스케일링을 진행하였다. 간단한 공정 과정인 습식 식각방식을 통해 수 나노 미터의 폭을 가지는 실리콘 웨지 구조를 구현하였으며, 셀의 스케일링에 따른 동작 전압, 전류 및 저항 변화를 통계적으로 검증하였다. 높은 도핑 농도를 가지는 실리콘 하부 전극의 경우 저항 변화 메모리 적용에 있어 신뢰성에 다소 취약한 현상을 발견하였다. 이를 개선하기 위해 니켈 실리사이드 공정을 추가적으로 진행하여 전극의 비저항을 감소시키고, 이에 따른 소자의 스위칭 파라미터 및 신뢰성의 개선은 물론 시냅스 소자의 가소성도 구현됨을 확인하였다. 마지막으로 웨지구조 저항 변화 메모리 어레이를 제작하여 벡터-행렬 연산을 진행하였다. 단순 도핑된 하부전극 대비, 실리사이드 전극을 활용한 어레이의 낮은 라인저항으로 인해 동일한 비트라인의 전류 합산 연산시 더 낮은 전류감소를 확인하였다. 이로 인해 저전력 및 고효율 하드웨어 기반 뉴로모픽 컴퓨팅 체계의 실현 가능성에 발전을 가져올 것으로 기대한다.Contents Abstract i Contents iv List of Figures vii List of Tables xiv Chapter 1 Introduction 1 1.1. Background 1 1.2. Silicon BE RRAM as a synaptic device 6 Chapter 2 Si nano-wedge RRAM device 8 2.1. Electrical characteristics of planar RRAM device with Si bottom electrode 8 2.2. Novelty of wedge-structure 15 2.2.1. Scaling effect 15 2.2.2. Fabrication process of Si nano-wedge RRAM 19 2.3. DC characteristics 26 2.3.1. HfOx-based nano-wedge RRAM 26 2.3.2. TiOx-based nano-wedge RRAM 32 2.4. Pulse characteristics 35 2.5. Limitation of Si BE RRAM device 37 2.6. Nickel silicidation to the bottom electrode 39 2.6.1. Effect of NiSi on its resistivity 41 2.6.2. Comparison of NiSi and TiSi 43 2.6.3. Process flow of single NiSi BE nano-wedge RRAM device 48 2.7. Improvement of switching parameters in NiSi BE RRAM device 53 Chapter 3 NiSi BE nano-wedge RRAM Cross-Point Array 71 3.1. Device structure and fabrication process 73 3.2. Electrical characteristics 78 Chapter 4 Hardware implementation as a synaptic device 83 4.1. Vector-matrix multiplication 86 4.2. Spice simulation for optimization of cell to wire resistance 94 4.3. Estimation of NiSi BE wire resistance 98 Chapter 5 Conclusions 102 Bibliography 104 Abstract in Korean 110 List of Publications 113Docto

Land cover change and forest fragmentation analysis for Naypyidaw, Myanmar

Myanmar(Burma) has been preserved valuable environmental resources because of its political isolation. But recently, Myanmar has moved a capital city(Naypyidaw) at central forest area and it has been urbanized radically since 2005. In this paper, we built multi-temporal land cover map from Landsat images of 1970s to 2012 with ENVI 4.5 software. For a broad approach, administrative district Yamethin which includes Naypyidaw is classified into 3 classes and with only Naypyidaw region is classified with 4-5 classes to analyse specific changes. And with forest cover extracted by Object Oriented Classification, we evaluated forest fragmentation before and after the development using Patch Analyst(FRAGSTATs 3.3) at Yamethin area. For Yamethin area, there were significant forest cover change, 51% in 1999 to 48% in 2012, and for Naypyidaw area, 67% in 1999 to 57% in 2012 respectively. Also landscape indices resulted fromPatch Analyst concluded that the total edge, edge density and mean shaped index of forest patches increased and total core area is decreased. It is attributed from land cover change with urbanization and agricultural land expansion.본 연구는 2012년도 환경부 차세대 에코이노베이션 기술 개발사업(과제번호 : 416-111-014)의지원으로 수행되었음.OAIID:oai:osos.snu.ac.kr:snu2013-01/102/0000004341/8SEQ:8PERF_CD:SNU2013-01EVAL_ITEM_CD:102USER_ID:0000004341ADJUST_YN:YEMP_ID:A075721DEPT_CD:527CITE_RATE:0FILENAME:첨부된 내역이 없습니다.DEPT_NM:조경·지역시스템공학부EMAIL:[email protected]_YN:NCONFIRM:

예연소를 활용하는 암모니아 압축착화엔진 연소전략 개발 및 시뮬레이션 연구

학위논문 (박사)-- 서울대학교 대학원 : 공과대학 기계항공공학부, 2018. 2. 송한호.In recent years, with the increase in the spread of the renewable energy and the development of its technologies, the necessity of development of energy storage medium technology for storing renewable energy which is intermittent. Hydrogen is one of the energy storage media that has received much attention. There have been many studies on the use of hydrogen as fuel and energy storage in the form of hydrogen. However, since hydrogen has an extremely low boiling point, it is difficult to store the hydrogen as a liquid phase, and when stored in a high-pressure gas phase, the energy density of the hydrogen based on volume is somewhat lowered. Ammonia is an energy storage medium that can compensate for the drawbacks of hydrogen. Since ammonia does not contain carbon in its molecular structure like hydrogen, it does not produce carbon-related emission during combustion, and has a merit of storability and transportability because it is in a liquid phase under a condition of room temperature and 10 atm. Focusing on the possibility of using ammonia as a hydrogen carrier, a combustion strategy for pure ammonia as an engine fuel to convert the stored energy into a usable form has been proposed, which uses ammonia itself as a combustion promotor. Under this strategy, the conditions of sufficiently high temperature and pressure to cause the spray combustion of ammonia are obtained by the auto-ignition of a pilot-injected mixture of air and ammonia. To confirm the feasibility and the operating characteristics of an engine with the ammonia combustion strategy proposed in this study, engine modeling has been conducted, the combustion strategy has been simulated, and a parametric study has been performed. To analyze the mechanisms of NO production in an engine with the proposed combustion strategy, the NO production process has been classified into four phases, and the NO production in each phase has been analyzed under various start of injection timing and fuel amounts.1. Introduction 1 1.1 Research background 1 1.2 Characteristics of ammonia 4 1.3 Previous researches 6 1.3.1 Indirect use of ammonia as a fuel 6 1.3.2 Direct use of ammonia as a fuel 7 1.4 Objectives of study 9 2. Methodology 11 2.1 Combustion strategy for ammonia engine 11 2.2 Model description 14 2.2.1 Modeling scope and major assumptions 14 2.2.2 Spray model 15 2.2.3 Chemical reaction model 17 2.2.4 Thermodynamics model 21 2.2.5 Simulation parameters 23 3. Operating characteristics of the engine with ammonia combustion strategy 29 3.1 Pre-combustion of ammonia-air mixture 29 3.2 Influence of SOI timing on engine performance 32 3.3 Engine performance under varying ratio of pilot and main injection with fixed amount of total fuel used 35 4. NO production analysis 44 4.1 Mechanism of NO production in ammonia spray 44 4.2 Influence of SOI timing on each phase of NO production 50 4.3 NO production under varying amount of fuel used 61 4.3.1 Amount of main injection variation 61 4.3.2 Amount of pilot injection variation 70 5. In-situ NO reduction 76 5.1 Additional stage of combustion strategy for NO reduction 76 5.2 Modification of spray model for in-situ NO reduction 77 5.3 In-situ NO reduction under various start of post-injection timing 79 6. Conclusions 86 Reference 89Docto

Prediction of Landslides Occurrence Probability under Climate Change using MaxEnt Model

Occurrence of landslides has been increasing due to extreme weather events(e.g. heavy rainfall, torrential rains) by climate change. Pyeongchang, Korea had seriously been damaged by landslides caused by a typhoon, Ewiniar in 2006. Moreover, the frequency and intensity of landslides are increasing in summer due to torrential rain. Therefore, risk assessment and adaptation measure is urgently needed to build resilience. To support landslide adaptation measures, this study predicted landslides occurrence using MaxEnt model and suggested susceptibility map of landslides. Precipitation data of RCP 8.5 Climate change scenarios were used to analyze an impact of increase in rainfall in the future. In 2050 and 2090, the probability of landslides occurrence was predicted to increase. These were due to an increase in heavy rainfall and cumulative rainfall. As a result of analysis, factors that has major impact on landslide appeared to be climate factors, prediction accuracy of the model was very high(92%). In the future Pyeongchang will have serious rainfall compare to 2006 and more intense landslides area expected to increase. This study will help to establish adaptation measure against landslides due to heavy rainfall.OAIID:oai:osos.snu.ac.kr:snu2013-01/102/0000004341/6SEQ:6PERF_CD:SNU2013-01EVAL_ITEM_CD:102USER_ID:0000004341ADJUST_YN:YEMP_ID:A075721DEPT_CD:527CITE_RATE:0FILENAME:첨부된 내역이 없습니다.DEPT_NM:조경·지역시스템공학부EMAIL:[email protected]_YN:NCONFIRM:

Applying Topographic Classification, Based on the Hydrological Process, to Design Habitat Linkages for Climate Change

The use of biodiversity surrogates has been discussed in the context of designing habitat linkages to support the migration of species affected by climate change. Topography has been proposed as a useful surrogate in the coarse-filter approach, as the hydrological process caused by topography such as erosion and accumulation is the basis of ecological processes. However, some studies that have designed topographic linkages as habitat linkages, so far have focused much on the shape of the topography (morphometric topographic classification) with little emphasis on the hydrological processes (generic topographic classification) to find such topographic linkages. We aimed to understand whether generic classification was valid for designing these linkages. First, we evaluated whether topographic classification is more appropriate for describing actual (coniferous and deciduous) and potential (mammals and amphibians) habitat distributions. Second, we analyzed the difference in the linkages between the morphometric and generic topographic classifications. The results showed that the generic classification represented the actual distribution of the trees, but neither the morphometric nor the generic classification could represent the potential animal distributions adequately. Our study demonstrated that the topographic classes, according to the generic classification, were arranged successively according to the flow of water, nutrients, and sediment; therefore, it would be advantageous to secure linkages with a width of 1 km or more. In addition, the edge effect would be smaller than with the morphometric classification. Accordingly, we suggest that topographic characteristics, based on the hydrological process, are required to design topographic linkages for climate change

Comparison between traditional IPA and revised IPA ; the Suncheon bay wetland reserve

수정된 IPA는 전통적 IPA와 비교시 실제 방문객 만족도가 반영된 관리전략을 수립하는데 있어 효과적인 방법이다. 그러나 전통적 IPA와 수정된 IPA의 비교연구는 제한적이다. 그러므로 본 연구에서는 순천만 습지 내 효과적인 관리전략을 구축하기 위해 전통적 IPA와 수정된 IPA를 비교분석하였다. 첫째, 수정된 IPA를 선정하기 위해 선행연구를 고찰하였고, 공간 내 방문객의 실제 만족도에 영향을 받는 관리전략과 서비스 질을 정량화 할 수 있는 적절한 방법으로 Deng(2007) 방법론을 선정하였다. 둘째, 순천만 습지 내 전통적 IPA와 수정된 IPA를 적용한 결과를 비교분석하였다. 셋째, 수정된 IPA의 관리전략과 변화된 관리요소에 관해 논의하였다. 그 결과, 전통적 IPA 결과보다 관리요구도가 더 높게 도출된 관리요소로 혼잡도가 나타났고, 관리요구도가 더 낮게 도출된 관리요소 중 집중관리에서 저우선순위로 관리전략이 변화하는 관리요소의 경우, 그늘목, 전시시설 내부, 프로그램, 가이드투어가 분석됐으며, 현 상태 유지에서 과잉노력지양으로 분석된 관리요소의 경우, 휴게시설, 낙조, 생울타리, 전시시설 외부로 도출되었다. 이는 현재 순천만 습지 내 관리전략과 비교시 전통적 IPA 결과값보다 수정된 IPA의 결과값에 더 부합된 결과로 실제 방문객들의 만족변화에 대해 탄력적인 반응을 보이는 것으로 분석되어졌다. 이를 통해 의사결정자들의 관리전략 구축시 수정된 IPA가 더 정확하고 신뢰성 높은 기초자료로 제공될 수 있을 것으로 기대된다. Compared to the traditional format, the revised IPA is an effective method for selecting a management strategy as compared to the traditional IPA. Comparison between the traditional IPA and revised IPA with a management strategy has been, however, limited. Therefore, the difference between the traditional IPA and revised IPA was compared to select an effective management strategy in the Suncheon Bay Wetland Reserve. First of all, related papers were reviewed to select an appropriate revised IPA. It was found that Deng (2007)'s revised IPA was appropriate for quantifying service quality and a management strategy that affects the measurable satisfaction of visitors in the space. Second, the results of the traditional IPA were compared with the revised IPA in the Suncheon Bay Wetland Reserve and the management strategy of the revised IPA and the changes of management factors were discussed. It was found that some management factors deviated from the order of the quadrant "low priority for managers", "Concentrate management here", "Keep up the good work" were moved to the order of the quadrants "Concentrate management here", "low priority for managers" and "Possible overkill" in the revised IPA grid. The complexity as a management factor resulted in higher demand management than the traditional IPA, which moved from "low priority for managers" to "Concentrate management here". Management factors resulted in lower demand management than the traditional IPA moved from "Concentrate management here" to "low priority for managers"; these consisted of shade trees, exhibition exteriors, programs, and a guided tour. Also, management factors moved from "Keep up the good work" to "Possible overkill" consisted of relaxation facilities, glow of the setting sun, a hedge, and an exhibition interior. Over all, the revised IPA responded properly to changes in the measurable satisfaction of visitors to the Suncheon Bay Wetland Reserve. Therefore, a revised IPA should be provided for accurate and reliable guidelines when decision makers establish management strategies.OAIID:RECH_ACHV_DSTSH_NO:T201711623RECH_ACHV_FG:RR00200001ADJUST_YN:EMP_ID:A075721CITE_RATE:0DEPT_NM:조경·지역시스템공학부EMAIL:[email protected]_YN:NN

Disaster Prediction and Policy Simulation for Evaluating Mitigation Effects Using Machine Learning and System Dynamics: Case Study of Seasonal Drought in Gyeonggi Province

우리나라는 홍수에 비해 가뭄에 대한 경험이 부족해 관련 정책이 미흡하다. 일반적으로 정책은 실행 후 효과가 확인되기까지 긴 시일이 걸릴 뿐만 아니라 빈번하게 수정되면 사회적 혼란이 야기되므로 이를 사전에 모의할 수 있는 새로운 방법이 필요하다. 본 연구는 기계학습과 시스템 다이내믹스를 이용하여 농업적 가뭄의 진행양상을 예측하고 이를 토대로 가상의 가뭄대응정책의 효과를 시뮬레이션 하는 전 과정을 다루었다. 연구 대상지는 경기도 남부이며, 연구 결과에 의하면 기계학습에 의해 예측된 3 개월간의 가뭄 후의 토양 수분지도는 농업적 가뭄 분포 패턴을 보여 주었다. 그리고 이 지도로부터 확인된 가뭄우심지역과 동일 취수원을 사용하는 모든 지자체를 대상으로 시스템 다이내믹스를 이용하여 가상의 수도가격 인상정책을 모의하였더니 확보 가능한 수자원양이 미미하여 가뭄완화에 거의 실효성이 없는 것으로 나타났다. Korea has had fewer droughts than floods; thus, its drought mitigation policies are insufficient. Typically, it takes a long time to confirm the effects of any policy and frequent revisions to a policy can cause social disruption. Therefore, a new method is needed, with which we can simulate policies in advance based on drought situation forecasts. This study deals with policy evaluation, using machine learning and system dynamics, by forecasting agricultural drought trends and simulating the effects of drought mitigation policies. The study area was the southern part of Gyeonggi Province. As a result, the soil moisture map predicted by machine learning for a time after three months of no rainfall clearly showed the resultant agricultural drought distribution. Also, the water price increase policy was simulated using system dynamics and found to be ineffective for drought mitigation because of insufficient water security measures.OAIID:RECH_ACHV_DSTSH_NO:T201912534RECH_ACHV_FG:RR00200001ADJUST_YN:EMP_ID:A075721CITE_RATE:0DEPT_NM:조경·지역시스템공학부EMAIL:[email protected]_YN:NN

Assessing conservation priorities of unexecuted urban parks in Seoul using ecological network and accessibility analyses

This study aims to quantitatively evaluate the conservation priorities of unexecuted urban parks in Seoul both from an ecological and public perspective. To this end, two methodologies, ecological network analysis based on graph and circuit theory and accessibility analysis, were employed in order to assess ecological connectivity of and public accessibility to unexecuted parks, respectively. This study applied linkage-mapping methods (shortest path and current flow betweenness centrality) of connectivity analysis to an integrated map of landscape permeability. The population-weighted accessibility to unexecuted parks was measured based on a negative exponential distance decay function. As a result, for both ecological connectivity and accessibility, Gwanaksan, Suraksan, and Bulamsan urban natural parks are found to be the most important (rank 1-3) to be conserved. For these sites, inner park areas with conservation priorities for connectivity and accessibility were identified. The findings of the study can be used for giving conservation priority to the unexecuted urban parks in terms of long-term sustainable urban planning.OAIID:RECH_ACHV_DSTSH_NO:T201806605RECH_ACHV_FG:RR00200001ADJUST_YN:EMP_ID:A075721CITE_RATE:0DEPT_NM:조경·지역시스템공학부EMAIL:[email protected]_YN:NN

Modeling the Present Probability of Urban Woody Plants in the face of Climate Change

The effect of climate change on urban woody plants remains difficult to predict in urban areas. Depending on its tolerances, a plant species may stay and survive or stay with slowly declining remnant populations under a changing climate. To predict those vulnerabilities on urban woody plants, this study suggests a basic bioclimatic envelop model of heat requirements, cold tolerance, chilling requirements and moisture requirements that are well documented as the climatic niche. Each component of the climatic niche is measured by the warmth index, the absolute minimum temperature, the number of chilling weeks and the water balance. Regarding the utility of the developed model, the selected urban plants present probabilities are suggested in the future climate of Seoul. Both Korea and Japans thermal thresholds are considered for a plants optimal climatic niche. By considering the thermal thresholds of these two regions for the same species, the different responses observed will reflect the plants hardening process in a rising climate. The model illustrated that the subpolar plants Taxus cuspidata and Ulmus davidiana var. japonica are predicted to have low suitability in Seoul. The temperate plants Zelkova serrata and Pinus densiflora, which have a broad climatic niche, exhibited the highest present probability in the future. The subtropical plants Camellia japonica and Castanopsis cuspidata var. sieboldii may exhibit a modest growth pattern in the late 21Cs future climatic period when an appropriate frost management scheme is offered. The model can be used to hypothesize how urban ecosystems could change over time. Moreover, the developed model can be used to establish selection guidelines for urban plants with high levels of climatic adaptability.This work was supported by Korea Environmental Industry and Technology Institutue(KEITI) grant funded by the Korea government (ME). (No. 416-111-014)OAIID:oai:osos.snu.ac.kr:snu2013-01/102/0000004341/1SEQ:1PERF_CD:SNU2013-01EVAL_ITEM_CD:102USER_ID:0000004341ADJUST_YN:YEMP_ID:A075721DEPT_CD:527CITE_RATE:0FILENAME:첨부된 내역이 없습니다.DEPT_NM:조경·지역시스템공학부EMAIL:[email protected]_YN:NCONFIRM:

A study on the riskiness and expansion of climate change risk : Focusing on landslide risk

이 연구는 우리 삶에 막대한 위협을 가하는 기후변화와 그로 인해 파생되는 기후변화 리스크의 그 위험성과 확장성을 살펴보는 데 목적이 있다. 이를 위해 우리나라 강원도지역을 대상으로 산사태리스크 예측과 그 피해비용 추정을 통해 기후변화 리스크의 확장성과 위험성을 분석하고자 하였다. 분석방법은 Maxent(Maximum Entropy Model)를 사용하여 향후 2100년까지 3기간(단기미래, 중기미래, 장기미래)을 대상으로 RCP 4.5와 RCP 8.5 시나리오를 적용해 기후변화에 따른 산사태 위험지역 면적과 피해규모를 추정하였다. 분석결과, 장기미래(2071~2100년)에는 과거(2006년 기준)보다 산사태 발생 위험지역이 150% 늘어나고, 피해 발생 규모도 200% 수준으로 커질 것으로 추정되었다. 또한, 건축물, 도로, 농경지와 같은 인간 활동과 관계된 지역의 산사태 위험이 더 커짐을 보였다. 한편, 시각을 넓혀 리스크관리를 주요 업무인 보험업에 대해 보면, 향후 기후변화 리스크의 확장은 보험업에 있어 보험금 지급 규모 거대화와 보험재무구조 악화 등을 초래할 것으로 연결해 볼 수 있다. 따라서 앞으로 보험회사는 기후변화 적응에 필요한 자본 확충과 자산의 유동성 확보 등 선제적 대응을 검토해 볼 가치가 있다. The purpose of this study is to conduct an analysis on the impact of climate change and climate change risk expansion. Above all, we analyze expand of climate change risk by estimating landslide risk and damage cost of Gangwon-do. Maxent (Maximum Entropy Model) is used to analyze landslide hazard areas. We estimate future landslide hazard areas for three periods (short-term, mid-term, and long-term) by using RCP 4.5 and RCP 8.5 scenarios. As a result of analysis, hazard areas increase up to 150% and damage cost increase up to 200% in the long-term future (2071~2100), respectively. Especially, human beings relevant areas such as buildings, roads, and farmlands showed high landslide risk than other areas. Meanwhile, the impact of climate change on the insurance industry is a huge increase in claims due to disasters and diseases arising from climate change. Growth in climate change-related legislation, regulations and reporting requirements on financial soundness and risk disclosure can be another concern. Therefore, the insurance industry needs to build a climate change adaptation strategies include capital raising, liquidity of assets, faithful debt management and so on.OAIID:RECH_ACHV_DSTSH_NO:T201713445RECH_ACHV_FG:RR00200001ADJUST_YN:EMP_ID:A075721CITE_RATE:0DEPT_NM:조경·지역시스템공학부EMAIL:[email protected]_YN:NN