• Smart Structures and Systems
• /
• 제30권5호
• /
• pp.433-446
• /
• 2022

Despite efforts to reduce unexpected accidents at confined construction sites, choking accidents continue to occur. Because of the poorly ventilated atmosphere, particularly in long, confined underground spaces, workers are subject to dangerous working conditions despite the use of artificial ventilation. Moreover, the traditional monitoring methods of using portable gas detectors place safety inspectors in direct contact with hazardous conditions. In this study, a long-range (LoRa)-based wireless safety monitoring system that features the network organization, fault-tolerant, power management, and a graphical user interface (GUI) was developed for underground construction sites. The LoRa wireless data communication system was adopted to detect hazardous gases and oxygen deficiency within a confined underground space with adjustable communication range and low power consumption. Fault tolerance based on the mapping information of the entire wireless sensor network was particularly implemented to ensure the reliable operation of the monitoring system. Moreover, a sleep mode was implemented for the efficient power management. The GUI was also developed to control the entire safety-monitoring system and to manage the measured data. The developed safety-monitoring system was validated in an indoor testing and at two full-scale water pipeline construction sites.

• 한국조경학회지
• /
• 제34권3호
• /
• pp.120-138
• /
• 2006

A city evolves over time. It grows, transforms, and sometimes degrades. Chuncheon is at a turning point from a city souggling with regulations regarding clean water supply and a military encampment to a masterpiece city with a sustainable vision. The city is getting ready to restructure itself to become a world-famous culture and tourism complex expanding its physical boundary across the Camp Page site and absorbing Jungdo as a major tourist attraction. The landscape in the future blueprint of Chuncheon will play a great role in restructuring urban form. The regenerated in will have a new networked open space system as well as re-evaluated landscape resources. The hybrid theoretical practice called 'landscape urbanism' burgeoning in the fields between 'landscape architecture' and 'urbanism' can guide us in considering the terms of the relationship between a city and landscape when we design a future city Landscape urbanism is considered to be an effective framework by which we can diagnose the current status of a landscape in our contemporary urban design practice in Korea. This paper tries to provide a different perspective from the viewpoint of landscape urbanism to decipher the hidden implications of the social agreement on the role of landscape in urban structure by re-reading eight design proposals presented for the ChunCheon G5 international design competition based on the main principles of landscape urbanism. The G5 design competition is a great opportunity to test out new ideas on a city, demonstrating the relative values among various urban-design professional realms. First, this paper provides an overview of the main ideas of landscape urbanism based on the literature review and case studies. Second, framework categories are suggested in order to extract the explicit and implicit ideas on the landscape. Third, eight proposals are reviewed according to the suggested categories to situate the current landscape design of Korea within the mainstream of contemporary practice of landscape urbanism. Based on the review of eight proposals, the following diagnostic conclusions are made; first, the ideas of landscape urbanism have not been actively introduced in large-scaled urban landscape projects in Korea like Chuncheon G5. Second, it remains to be a big task for landscape professions to be able to participate in design consortiums on an equal footing. Third, In order to introduce and reify the ideas of landscape urbanism in Korea, it is inevitable and critical to test the ideas in both academic fields and professional practices to find the appropriately adjusted model of landscape urbanism.

• 한국전통조경학회지
• /
• 제31권3호
• /
• pp.114-121
• /
• 2013

관음현상기는 세조가 미지산 상원사에 행차했을 때, 담화전(曇華殿) 상공에서 목격한 백의관세음보살의 화현 모습을 최항에게 일러 찬(讚)한 글이다. 관음현상기에는 화공이 그린 백의관음화현도가 붙어 있는데, 이 그림으로 인해서 조선 초기의 상원사의 모습을 알 수가 있게 되었다. 본 연구에서는 관음현상기에 실린 기록과 그림을 통해서 조선 초기 상원사의 경관성을 살피는 것에 주목하였다. 연구 결과, 조선 초기 상원사의 건물 배치나 공간구성 그리고 건물의 형식이나 조경처리에 있어서 다른 산지 사찰과는 다른 특별성이나 차별성을 확인할 수 있었다. 이러한 특별성이나 차별성은 상원사가 왕실의 원찰이라는 사격을 가지고 있었기 때문에 가능했던 것으로 보인다. 특히, 조경적 측면에서 볼 때, 경석은 주목되는 바가 큰데, 그것은 사찰조경이 주로 물을 재료로 해서 이루어졌다는 지금까지의 생각을 보완케 만드는 자료가 될 수 있기 때문이다.

• 한국수자원학회논문집
• /
• 제46권3호
• /
• pp.277-285
• /
• 2013

경인아라뱃길의 경관기능은 조망대상으로써 인근 아파트주민에게는 외부경제효과를 의미한다. 본 연구의 목적은 주택가격에 내재된 아라뱃길 조망권의 가치를 평가하는 것이다. 적용된 방법은 헤도닉가격모형(HPM)이다. 조망 수혜지역 내에 있는 아파트들 중 2011년 기간에 실제 거래가 이루어진 총 4,207세대로부터 수집된 자료를 기반으로 아파트매매가격, 단지특성, 입지특성, 시점특성 등과 관련된 변수들을 도출하였다. 투입 속성으로서 조망권변수는 수치지형도와 Google Mapview의 결합에 의해 고안된 조망권 알고리즘에 의해 도출되었다. 기존에 수행된 주택가격결정모형의 추정결과와 비교해 보았을 때, 본 모형의 추정결과는 계수의 크기에 있어 다소의 차이는 있으나 방향성에 있어서는 일치하는 경향을 보였다. 특히, 주거공간으로부터 아라뱃길까지의 거리와 아라뱃길의 조망권이 주택가격 형성에 있어 중요한 역할을 한다는 점을 밝혔다. HPM에 의해 추정된 조망권의 가치는 평당 16.5만원으로 나타났다. 역내 모집단 아파트로 확장된 아라뱃길 조망권에 의한 지역자산 고도화 효과는 총 891억원으로 추정되었다.

• 한국환경복원기술학회지
• /
• 제3권1호
• /
• pp.80-90
• /
• 2000

This study was carried out to introduce current status and development strategy for an environmental restoration of stream side in Japan, and to consider a methodology which could be effectively applied for the environmental restoration of stream side in Korea. Since the end of 20th century, the native ecology and landscape of Japan remained only a limited areas such as stream side, water side and forest areas. Therefore, recently the works of forest conservation and erosion control of environmental restoration on stream side tended to increased. The strategic prospects of environmental restoration in Japan were summarized as follows : 1. From the ecological point of view, we have to develop a certain method and technology in construction of forest conservation and erosion control to prevent environmental problem from erosion control works. 2. We have to restore not only a continuity of stream side forest from a primitive area to an estuary but also the stream side forest to preserve and restore a stream side vegetation on a primitive watershed areas. 3. We have to improve a method of construction or removal of a structure which were constructed in the stream to restore a water side environment and an interaction system for an integration on a forest land, stream, and erosion control. Additionally, we have to establish an integrated evaluation method and an enforcement system after investigation of influences on natural environment, stream, and forest etc. 4. We have to conduct an integrated research to investigate the ecosystem of stream side, and construct environmentally friendly water park and erosion control park which considered natural environment and its landscape. Additionally, we need to introduce and adopt a natural style stream construction method to restore a water side areas.

• 아시안잔디학회지
• /
• 제20권2호
• /
• pp.253-264
• /
• 2006

우리나라의 대부분의 골프장은 법적, 경제적 이유로 건설부지가 계곡과 능선 또는 봉우리를 포함할 수밖에 없는 실정이다. 계곡과 능선은 생태계에 있어서 매우 중요한 부분을 차지하고 있으므로 이를 훼손하는 것은 생태환경의 변화에 큰 영향을 미치게 된다. 따라서 골프장 공사로 인해 발생하는 훼손을 최소화하고 기존의 계곡 또는 하천이 하던 생태적 기능을 수행할 수 있는 생태복원형 하천을 환경보상적 차원에서 설치하는 것이 매우 중요하다. 본 논문에서는 골프장 내의 하천을 생태하천으로 복원하기 위해 고려해야할 사항과 적합한 공법 및 사례를 통하여 골프장건설로 인한 환경영향을 최소화하고 자연환경과 조화를 통하여 최적의 골프장을 조성할 수 있도록 설계도면 실례를 들어 제안하였다.

• 한국수자원학회논문집
• /
• 제54권7호
• /
• pp.535-544
• /
• 2021

농업용수는 용수수요의 48%를 차지하고 있으며, 농업 유역내의 유량관리를 위해서는 농업저수지의 관리가 중요하다. 효율적인 농업용수의 활용을 위해서는 농업저수지 및 농업 유역 내 수자원의 분포를 모니터링 할 수 있는 기술이 요구된다. 이에 본 연구에서는 2018년부터 2020년까지 3년간의 Sentinel-1 영상을 활용하여 지상의 수체를 탐지하기 위한 임계값 결정 방법 세 가지(고정 임계값, Otsu 임계값, Kittler-Illingworth (KI) 임계값)을 비교하여, 정확한 저수면적을 산정하기 위한 임계값 결정 방법을 평가하고자 하였다. 또한 이동, 고삼, 기흥저수지에서 저수면적과 저수량의 관계를 분석하여, SAR 영상 기반의 저수량을 산정하였고 지상관측 자료와의 검증을 수행하였다. 수체를 탐지하기 위한 임계값 결정 방법은 KI 임계값의 경우가 가장 정확한 것으로 나타났으며, KI 임계값을 활용하여 산정된 저수량은 이동, 고삼, 기흥저수지의 지상관측 자료와의 검증에서 평균 r = 0.9235, KGE' = 0.8691 로 높은 일치도를 나타냈다. 계절에 따른 오차 특성은 충분히 관측되지 않았으나, 저수면적과 저수량 간의 관계가 급격하게 바뀌는 고수위에서의 과소 산정 문제가 발생할 수 있다. 따라서 정확한 저수량 추정을 위해서는 지상관측 자료를 통한 저수면적-저수량 관계 파악이 선행되어야 한다. 추후 수자원위성을 통한 SAR 자료의 활용이 가능해지면, 본 연구의 결과를 바탕으로 저수량 모니터링 및 가뭄 대응을 위한 활용에서 유용할 것으로 판단되나, 홍수예방 등의 목적으로 활용하기 위해서는 추가적인 연구가 필요하다.

• 한국조경학회지
• /
• 제27권4호
• /
• pp.1-12
• /
• 1999

This study aims to find basic data for using the quantitative assessment of the sustainability and establishing the systematic index of the planning for local cities to consider the environmentally sound and sustainable development. The research designs to review professional responding to surveys preceded by separate questionnaires and interviews from book reviews, and suggests to make an assessment model of the sustainability for local cities. The research found consequently as follows. Firstly, the research survey items were decides totally 52, grouped 9 assessmental issues and distributed under 4 assessmental domains for the sustainability from the references of book reviews. Secondly, the research result concentrated on the followings from the professional responding to surveys. 1. A most influent factor is the distribution of animals and plants in a nature domain. The next influent factors are the ratio of mass-transportation systems, the numbers of the species of animals and plants, the acreage of conservative forestry, the numbers of reused water resources, and the usage number of water supply, orderly in the nature domain. 2. A most influent factor is the usage number of synthetic detergents in a pollution domain. The next influent factors are the volume of waste water, the number of registered vehicles, the degree of soil pollution, and the charge of development imposition, orderly in the pollution domain. 3. A most influent factor is the acreage of athletic facilities, in an urban domain. the next influent factors are the acreage of recreational facilities, the number and acreage of cultural assets, the number of cultural facilities, the acreage of landscape conservation area, the charge of cultural asset management, orderly in the urban domain. 4. A most influent factor is the number of waste disposal facilities in a participation domain. The next influent factors are the capacity of reused waste, the usage of synthetic detergents, the ratio of waste water disposal, orderly in the participation domain. 5. A most contributed influent domain to the assessment of the sustainability for local cities is the urban domain. The next influent domains are nature domain, participation domain, and pollution domain, orderly in the contribution of the assessment of the sustainability. But, the pollution domain is little relationship with the sustainability. Therefore, it is clear that the abundant greens and the improved level of culture are dominant influences on the sustainabiligy, as like improving the ratio of roadside trees, the acreage of parks, and enlarging the number of cultural facilities.

• 한국조경학회지
• /
• 제35권6호
• /
• pp.48-63
• /
• 2008

This research is to apply suitable natural ecosystem evaluation criteria in order to develop the ecosystem conservation, restoration and ways to build substitute habitats as a compensation plan for damaged soundly natural ecosystems in small-scale projects such as resource recovery facility, filtration, etc. The environmental ecology evaluation i.e. generally based on their actual vegetation, community structure, wildlife, water system survey were measured the primary plans for reflecting unique natural environment level of site. As a result, it is necessary to conserve the land in fallow type of wetland, good conservative condition of deciduous forest, wetlanded watercourse for amphibia and reptiles crossing. However, the plan of filtration plant was destroyed wetland(sound ecosystem), natural forest, asian toad spawning area. According to the result of it schemed to build alternative wetland and spawning area, plan to healthy ecosystem and surface soil transplantation as compensation plan. The alternative wetland and spawning area are not only created a various water levels like depth of water is $0{\sim}30cm,\;30{\sim}60cm$, more than 1.5m but also it leads to asian toad spawning and wildlife inhabitant. Moreover, the ecosystem and surface soil transplantation be applied to use the Quercus acutissima forest resources(114 upper trees, 71 canopy trees, 401 shrubs) and surface soil$(5,072m^3)$ in ecology creation sets.

• 한국제4기학회지
• /
• 제23권1호
• /
• pp.38-41
• /
• 2009

Results from the most recent decade of Mars' missions to Mars highlight a liquid water and water-ice sculpted landscape. Evidence includes layered sedimentary sequences with weathered outcrops, debris flows, fluvial valleys, alluvial fans, deltas, glacial and periglacial landscapes, and geochemical/mineralogical signatures of aqueous activity, including the formation of sulfates and clays, and the leaching and deposition of elements such as potassium, thorium,and iron. Such evidence indicates weathered zones and possible paleosols in stratigraphic sequences, transport of water and rock materials to sedimentary basins, and the possible formation of extensive transient lakes and possibly transient oceans on Mars. This new evidence is consistent with Viking-era geologic investigations that reported magmatic-driven flooding, ponding to form large water bodies in the northern plains, and transient (tens of thousand of years) hydrological cycles. It may even indicate aqueous activity at present. Both endogenic (magmatic driven) and exogenic (both impact cratering and changes in orbital parameters) have influenced paleohydrologic and environmental change on Mars. Abundance of water and dynamic activity would be decisively important for the possibility of past and present life on Mars.