• 한국산림과학회지
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• 제102권1호
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• pp.113-121
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• 2013

가장자리는 산불 피해 후 산림생태계 변화 및 회복과정에 중요한 역할을 하는 것으로 알려져 있다. 본 연구는 산불피해지의 공간 자기상관성을 고려하여 산불피해지 가장자리 형성과 경관특성변수들과의 관계 분석에 목적을 두고 수행되었다. 연구대상지로는 2000년도에 발생한 삼척 산불피해지를 선정하였으며, 대상지내 경관특성변수 측정을 위하여 산불피해지 전 지역을 포함하도록 500 $m^2$ 격자를 생성하였다. 연구에 사용된 경관 특성 변수들로는 표고, 경사, TWI(Topographic Wetness Index), SRI(Solar Radiation Index)을 사용하였고, 연료유형변수와 토지피복 변수를 포함시켰다. 격자들은 산불피해지 경계선과 교차하는 격자는 가장자리로 그 외의 격자들은 내부지역으로 설정하였다. 공간자기 상관을 보정하기 위하여 경관 변형된 t-검정과 상관분석을 실시하였다. 분석 결과 산불피해지 경계 형성과 양의 관계를 보이는 변수는 TWI, SRI, 물, 전, 답, 개발지, 나대지이며, 음의 관계를 보이는 경관특성변수는 경사, 표고, 그리고 모든 연료 유형 변수들이었다. 특히 TWI은 r=0.437로 경계형성과 강한 양의 관계를 보였다. 따라서 산불 피해지의 경계는 산림과 이질적인 토지피복 혹은 토지이용이 존재하는 경우와 경사가 완만하고 표고는 낮으며, 토양 및 지표면의 상대습도가 높은 지형에서 형성될 가능성이 높은 것으로 나타났다.

• 한국산학기술학회논문지
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• 제20권5호
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• pp.27-35
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• 2019

본 연구는 땅밀림과 같이 예측할 수 없는 재해가 발생했을 때 신속 합리 효과적인 복구계획 수립에 기초자료를 제공하고자 수치지형도와 항공 LiDAR 자료를 이용하여 땅밀림 발생지역에서 변위 특성을 분석하였다. 이를 위해 본 연구에서는 항공 LiDAR 자료를 통하여 땅밀림 발생지점을 탐지하고 지형변화와 발생규모를 정량적으로 분석하였다. 그 결과 본 연구대상지는 국내 땅밀림 발생의 일반적 형태인 말굽형태로 나타났고, 붕괴방향은 북쪽이었다. 땅밀림 발생의 전체 면적은 약 2.5ha, 활락애는 길이 약 327.3m, 평균 폭 19.3m, 평균 깊이 8.6m로 분석되었다. 땅밀림이 대규모로 발생한 것은 아니지만, 도로가 위치한 인접사면에서 발생하여 옹벽 도로가 파손되는 등 큰 피해가 발생하였다. 땅밀림 발생지의 현장조사는 접근성, 안전성 등의 문제로 제한사항이 있지만 항공 LiDAR를 통하여 정확한 분석이 가능한 장점이 있었다. 그러나 항공 LiDAR는 비용이 많이 드는 단점이 있기 때문에 신속 지속 장기적인 모니터링에는 무인기에 LiDAR를 탑재하는 기술을 개발하여 이를 활용하는 것이 효율적이다. 이러한 땅밀림 발생지에서는 땅밀림의 이동방향, 규모 변화와 같은 정보를 지속적으로 획득해서 복구계획 수립 및 피해를 예방하는데 있어 활용해야한다.

• Spatial Information Research
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• 제11권3호
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• pp.241-249
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• 2003

본 연구의 목적은 GIS 분석기법에 의해 북한의 경제활동에 최적인 산업입지 지역을 분석하기 위한 기초 자료를 제공하는데 있다. 이러한 목적을 달성하기 위해 먼저 남포지역이 사례지역으로 선정되었다. 이는 환경적 요인과 사회문화적 요소에 의해 최적의 입지지역을 구분하기 위함이다. 두 번째로 자연환경 요소인 토지이용 상태와 지형요소가 분석되었다. 토지피복도와 식생지수 분포도가 작성되었고, 고도와 경사도 등을 분석하기 위해 수치고도모형이 작성되었다. 재해영향평가의 수단인 USLE는 산업단지 개발사업 도중의 환경변화를 최소화하는 방안으로 제안되어 본 연구에 적용되었다. 본 연구에서는 GIS와 USLE의 분석에 의해 환경변화를 최소화하는 최적의 산업입지지역 선정 방안을 제안하였다.

• Journal of the Korean Institute of Landscape Architecture International Edition
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• 제1호
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• pp.67-74
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• 2001

Now that importance of landscape planning unique to each area is emphasized, it is necessary to conduct landscape planning by taking advantage of natural environments unique to each ares, because its natural environments are regarded as one of the assets the area possesses. This study targets at Kawachinagano City, Osaka, one of the residential areas that I not only rich in natural and historical elements, but also has been rapidly growing. The purposes of this study are to evaluate change in landscape structure over time by analyzing relation between landform and pattern of expanding the built-up area at three time points of 1932, 1967, and 1994 with GIS (ARC/INFO 7.0.3, ARC/View 3.0 (ESRI)), as well as to make some suggestions for planning landscape unique to the area. Data on main ridges, sub ridges, main rivers, and other landform were read from the elevation map, and data on woodland, and parks and open spaces (having more than 3 ha area) were read from the existing land use map. The data were used to understand the natural structure of the city from topographic viewpoint. Next, the existing land use map prepared with data on the built-up area and urban axes consisting of roads and streets were overlaid on the elevation map in order to understand relation between pattern of expanding the built-up area and the natural structure.

• Wind and Structures
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• 제37권2호
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• pp.95-104
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• 2023

The latest revision of AS/NZS 1170.2 incorporates some new research and knowledge on strong winds, climate change, and shape factors for new structures of interest such as solar panels. Unlike most other jurisdictions, Australia and New Zealand covers a vast area of land, a latitude range from 11° to 47°S climatic zones from tropical to cold temperate, and virtually every type of extreme wind event. The latter includes gales from synoptic-scale depressions, severe convectively-driven downdrafts from thunderstorms, tropical cyclones, downslope winds, and tornadoes. All except tornadoes are now covered within AS/NZS 1170.2. The paper describes the main features of the 2021 edition with emphasis on the new content, including the changes in the regional boundaries, regional wind speeds, terrain-height, topographic and direction multipliers. A new 'climate change multiplier' has been included, and the gust and turbulence profiles for over-water winds have been revised. Amongst the changes to the provisions for shape factors, values are provided for ground-mounted solar panels, and new data are provided for curved roofs. New methods have been given for dynamic response factors for poles and masts, and advice given for acceleration calculations for high-rise buildings and other dynamically wind-sensitive structures.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2003년도 추계학술발표회 논문집
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• pp.391-396
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• 2003

The digital map expresses natural topography and artificial things with 3D position coordinates in the computer such as the road, railway, building, river, mountain, paddy and dryland. Therefore, those should contribute to the information-oriented society by maintaining information and providing it to users quickly. However it is difficult to maintain the most recent topographic information all the time because of restricted budget and time. The purpose of this study is to investigate and analyze the updating area of the digital map using remotely sensed data, and to furnish the useful information reducing cost and time. To predict updating area of the digital map, we applied the urban changes analysis method to Landsat TM images from produced date of the digital map to up-to-date. Classification method for urban change analysis applied single band process algorithm. This study presents that updating area of the digital map is predicted by only the rate of 40% on total research area.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2003년도 추계학술발표회 논문집
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• pp.205-209
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• 2003

The urbanization of Korea has been rapidly progressed since 1960. Current available satellite images used in various fields are obtained after 1975. The CORONA Image data declassified in 1995, and are the only source of image which provide 1960's topographic information of the Korean Peninsula. In this sense CORONA imagery can be readily applicable for change detection in various fields such as urban, forest and environmental planning. To generate CORONA mosaic image of Korea we undertook comparative analysis of the various geocoding methods. We also applied the linear regression method to perform the radiometric balance between the strips.

• 수면정신생리
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• 제16권1호
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• pp.16-21
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• 2009

In accordance with the development of EEG and polysomnography in the field of sleep research, the sleep onset period (SOP) between wakefulness and sleep has been considered an important part for understanding the physiology of sleep. SOP in the transition from wakefulness to sleep is a gradual process integrating various viewpoints such as behavior, EEG, physiology and subjective report. Particularly, based on understanding of EEG changes during sleep, SOP has been regarded as a pattern of topographical change in specific frequency and specific state in EEG. Studies on quantitative EEG (qEEG) and event-related potential (ERP) have suggested that SOP shows the changes of functional coordination at the specific cortical areas in qEEG and the changes of regular patterns in response to environmental stimulation in ERP. The development of sleep EEG and topographic mapping of EEG is expected to integrate various viewpoints of SOP and clarify the neurophysiologic mechanism of SOP further.

• 한국조경학회지
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• 제15권1호
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• pp.69-84
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• 1987

According to the complexity and the pluralism of the modern cities, they are changing themselves into the multinoded and social - classless urban environments. The sudden drift of population to the cities is giving rise to the serious environmental problems, and the rapid increase of recreational needs among the citizen is changing the urban society into a leisure - oriented one. In order to coping with the abrupt change in the social and natural urban environments, the various fields of urban society should be co - ordinated. The study uses the green - city concept to get solves the incongruity of urban structure in Chonju City. The existing open space maps were drawn up by the various techniques such as the analysis of the topographic maps and collected data, the interpretation of the aero-photographs and the reconnaissance of site. The authors suggested the existing condition, and the problems and potentials of open space elements in Chonju City through the analysis of the existing condition maps. After synthesizing the contents of analysis, the 7u(hors established an exclusive open space system for Chonju City.

• 건축역사연구
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• 제11권4호
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• pp.45-69
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• 2002

This study aims to find out the genetic characteristics of gridded subdivision area which has its origin from ancient local administrative city-Sangju, Jeonju, Namwon, Kwangju, Chungju. The spatial structure, based on the inter-relationship among gridded subdivision area, city wall, and topographic condition, and the morphological characteristics of gridded subdivision area are analyzed. The points of analysis on morphological characteristics of gridded subdivision area consist of the size of unit block, the organization system of unit block, the orientation of subdivision line. As a result of the analysis, three main characteristics are found. Firstly there can be found no same land subdivision rule among study areas. Secondly, the morphological features of study area were the products of cumulative process of different subdivision areas which were developed in different periods. Thirdly, the original regular gridded land subdivision seems to have been carried out in the object of a farm-land cultivation around 7th century. And there was a change of land-use from farm land to urban land-use during the later 7th century and 8th century.