• 제목/요약/키워드: Protection and Restoration

검색결과 306건 처리시간 0.033초

자연형 하천평가를 위한 원격탐사법 응용 : 다중파장 위성영상의 식생지수 중심 (An Application of Remote Sensing Method for Close-to-nature Stream Evaluation : Focusing on Vegetation Index of Multi-Spectral Satellite Image)

  • 윤영배;조홍제;김근영
    • 한국수자원학회:학술대회논문집
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    • 한국수자원학회 2006년도 학술발표회 논문집
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    • pp.462-466
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    • 2006
  • Close-to-nature stream evaluation is one of the processing to make the streams over in order to keep them natural. It is integral to evaluate and make an accurate analysis of them on the purpose of maintaining streams healthy. For many instances, there are, stream organization evaluation for restoration by German government, evaluation for ecosystem protection in natural preserves by New Zealand government, and stream-view evaluation for restoration by Britain government so on. In case of the country there are analysis and evaluation of stream physical organization by Cho, Yong-hyun, Close-to-nature stream evaluation for restoration by Kim, Dong-chan, evaluation of stream properties in korea by Park, Bong-jin. Close-to-nature evaluation by Lim, Chan-uk, that is advanced version of Park, Bong-jin's, shows form of stream including waterway curve, sand bar, diversity of flow, river bed material, diversity of minor bed, minor bed bank protection works, bank protection material. It also does environment of stream including side of minor bed vegetation, width of surface of the water/width of the river etc.. By the way, this evaluation does not have free access to apply those details above in the field, it often happens that you get various outcome from the one spot. so you must need more realistic testing method to obtain more accurate data. Remote sensing method is highly recommended because this is very useful for collecting realistic data of vegetation index. what is more, it can not only scan even the minimum area within its resolving power but also do obtain data anytime. Vegetation index indicates Ratio vegetation index, Normalized difference vegetation index, Soil adjusted vegetation index, Atmospherically resistant vegetation index etc.. The research is focusing on Cheokgwa stream which is the branch of Taehwa river and shows 19 sectioned Close-to-nature stream performed according to the method by Lim, chan-uk. Besides let you know vegetation index came from image data of satellite landsat 7 with the variation of buffering area, of the day 9. may. 2003. Of all, the outcome 0.758 at 200m buffer-zone of NDVI was the best we have got so far.

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석조문화재 보존처리에 따른 원형보존과 진정성 고찰 - 원주 법천사지 지광국사탑 보존처리 사례를 중심으로 - (A Study on the Original Form and Authenticity of the Stone Cultural Heritage according to the Conservation Treatment - With Focus on the Stupa of State Preceptor Jigwang from Wonju Beopcheonsa Temple to the Conservation Treatment -)

  • 이태종;조하진;박희정;강산하
    • 보존과학회지
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    • 제35권3호
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    • pp.259-268
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    • 2019
  • 석조문화재는 조성된 직후부터 복합적 훼손요인에 의해 손상되거나 본래의 역사적 진정성을 잃어버린 채 현재에 이르게 된다. 원형보존과 진정성을 회복시키기 위한 다양한 인위적 개입을 원주 법천사지 지광국사탑 보존처리 사례를 중심으로 설명하였다. 지광국사탑의 보존처리는 해당 문화재의 연구와 보호에 기여하는 모든 과학적 기술적 수단을 확보한 후 진행하였으며, 지광국사탑의 미학적, 역사적 가치를 보존하고 원 재료와 원형에 대한 이해를 바탕으로 추진하였기 때문에 과도한 복원은 지양하였으며 원형보존과 진정성을 회복하는데 기여한 것으로 판단된다.

우리나라 물관리 체제의 혁신 (Restructuring of Water Governance Institution in Korea)

  • 김승
    • 한국농공학회:학술대회논문집
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    • 한국농공학회 2005년도 학술발표논문집
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    • pp.679-685
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    • 2005
  • In Korea, water management policy had been successfully conducted until late 1980's. During the period, fundamental needs of human-being, such as requirements of drinking and irrigation waters and flood protection for living, had been satisfied. However, most of recent water problems occurred after the late 1980's such as water quality management and new water resources development, have been unresolved and accumulated. Because, our water governing institutions have become ineffective as water management issue has been changed gradually from fundamental human needs such as water supply and/or flood protection to complex/integrated issues, for example, river restoration. To solve those water problems accumulated, we needs a new paradigm of water governing institution such as setting up national water management committee and river basin committee, in order to coordinate water-related ministries' policies and establish national water resources planning in an integrated format.

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Ethernet 기반 가입자망의 보호 및 절체에 대한 연구 (A study on the Protection/Restoration of High speed Ethernet in Optics Layer)

  • 신상배;조성대;박영일
    • 한국통신학회논문지
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    • 제27권10C호
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    • pp.933-936
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    • 2002
  • 인터넷 사용의 급증으로 말미암아 패킷을 효과적으로 처리할 수 있는 이더넷 장비의 용량도 빠른 속도로 증가하고 있다. 한편 이더넷의 용량이 증가함에 따라 장치의 고신뢰성이 요구되고 있다. 본 논문에서는 현재 메트로 영역에서 사용되는 장치들에 적용 가능한 광링크 보호절체 방식을 제시하고 실험 결과를 보였다.

스마트 그리드 환경에서 개인정보 보호를 위한 효율적인 비밀분산 데이터 관리 방안 (Efficient Secret Sharing Data Management Scheme for Privacy Protection in Smart Grid Environment)

  • 이성용;여상수
    • 디지털융복합연구
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    • 제11권12호
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    • pp.311-318
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    • 2013
  • 스마트 그리드 환경에서 소비자의 개인 프라이버시를 보호하기 위해서, 민감한 개인정보 데이터에 대한 보안 정책과 기술 프레임워크를 마련하는 것은 매우 중요한 일이다. 본 논문은 스마트 그리드에서의 개인정보보호를 위해서 제안된 데이터 비밀분산 관련 기법들을 소개하고, 기존 기법들의 문제점을 설명한다. 본 논문에서 제안하는 기법은 분산 복원 알고리즘에서 라운드 횟수를 감소시키고, 데이터베이스의 개수 또한 조절할 수 있도록 함으로써 효율성과 안전성 측면에서 향상됨을 보여준다.

다목적 기능을 가진 수목보호패드의 성능 연구 (Performance Research of a Multi Functional Tree Protection Pad)

  • 정용조;이경연
    • 한국환경복원기술학회지
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    • 제21권1호
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    • pp.133-143
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    • 2018
  • In spite of the growing importance of landscaping trees, the rate of flawed and withered trees damaged by pest, disease, drought or frost is increasing. In order to evaluate the performance of the Tree Protective Pad, which are developed to reduce the failure ratio in landscape planting, the tree protective pad for 'digging', 'pest controlling', and 'insulating' are tested based on the five functional criteria; moisturizing effect, wither preventive effect, pest and disease control, thermal effect, tensile strength, and environmental performance. The result of this study is as follows. The moisturizing effect of the tree protective pad for digging is found to be outstanding. According to the result of testing the pad on trees, in particular, it is better than jute tape in wither preventive effect, which means it is expected to prevent flaw and wilt from planting during the improper seasons like summertime. The experiment of installing the protective tree pad for pest controlling to the trunk of Quercus mongolica shows that preventive effect of the pad from diseases and insects is superior, and it also has economical effect by reducing the use of agricultural chemicals. The comparative test of the pad for insulating and jute tape proves that the temperature of the pad is about $2^{\circ}C$ higher than outside. The rate of tensile strength and biodegradation of the pad exceeds the optimal level, so it is revealed that the pad may be the work efficient and environment-friendly product. Likewise, by timely irrigating trees, the tree protective pad economically prevents trees from pest, disease,drought or frost, which may be caused by improper seasonal or delayed planting. As a means of reducing the flaw and facilitating the growth of trees, the exceptional performance of the pad is expected to effectively used in landscape planting and management.

재제조된 노후 디젤엔진의 수소첨가에 따른 출력 및 배출가스 특성 (The Engine Performance and Emission Characteristics of Remanufactured Diesel Engine by Hydrogen Enrichment)

  • 김용태;우재환;서삼원;김창기;박범수
    • 한국수소및신에너지학회논문집
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    • 제25권5호
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    • pp.533-540
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    • 2014
  • The remanufacturing industry for automotive parts is a major issue which affects the environment protection and CO2 reduction throughout the world. Beside this, remanufacturing technologies of worn-out diesel engines have been developing to make as close to new as possible. In this study, the characteristics of the engine-power output and exhaust emissions of remanufactured diesel engine by hydrogen enrichment are evaluated by measuring the engine and vehicle test. Moreover, with worn-out diesel engine and first generation common-rail engine, we compared by testing their characteristics, resulting in the restoration of engine-power output more than 93%, as well as marvelously reduces the THC and NOx emission. At a guess, high pressure injection of diesel increases fuel atomization characteristics with excellence combustion efficiency, resulting in reduction of THC emission. Also, rapid cooling of EGR decreases combustion temperature, resulting in reduction of NOx emission. Consequently, these remanufacturing for diesel engine enables worn-out diesel engine to have restoration to the original state. Simultaneously achieved 2 goals called that CO2 emission reduction and protection of environment by remanufacturing engine.

국가 보호지역 통합 시스템의 양적 확대 목표에 대한 평가 (Evaluating Quantitative Expansion Goals of the National Protected Areas Integrated System)

  • 홍진표
    • 한국환경복원기술학회지
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    • 제21권3호
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    • pp.57-65
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    • 2018
  • The study is conducted to establish the National Protected Areas Integrated System(NPAIS) which includes National Protected Areas(NPAs) and other conservation measures in terms of effective ways for biodiversity conservation. Additionally, it is carried out to evaluate progress toward quantitative expansion goals in Aichi biodiversity Target 11. The NPAIS consists of NPAs and other effective area-based conservation measures(OECMs). There are two different types of OECMs. OECMs type I, including water-source protection Areas(WPA), riparian zones(RZ), fishery-resource protection zones (FPZ), and urban natural park zones(UNPZ), is a potential protected area which is recommended to be incorporated into the NPAs for effective management. OECMs type II means development restriction zones(DRZ), natural recreation forests(NRF), and buffer zones for Korea national arboretum(BKNA). As a result of evaluating the quantitative expansion goals of the NPAIS, terrestrial and inland water protected areas exceed 17% of the quantitative goal in Aichi biodiversity Target 11. The larger the area of individual OECMs and the lower the degree of overlap with NPAs, the higher the contribution of them to the terrestrial and inland water protected areas. DRZ contributes to enlarge more than 3% of quantitative expansion. And RZ and NRF contribute more than 1%. The marine protected areas are expanded by $1,425km^2$ through FPZ, but the expanded area is very small as comparing with the total marine area. It adds only 0.321% to the quantitative expansion. The rest of OECMs also has very poor quantitative expansion contributions in the marine area. Consequently, the NPAIS is effective for quantitative expansion of land areas, but not for marine areas.

보호지역 관리를 위한 생물다양성 평가 (The biodiversity representation assessment in South Korea's protected area network)

  • 최혜영;;주우영;권혁수
    • 한국환경복원기술학회지
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    • 제23권1호
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    • pp.77-87
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    • 2020
  • National parks and other protected areas often do not adequately protect national biodiversity because they were originally created for socio-economic and/or aesthetic values. The Korean government has committed to expanding the extent of protected areas to fulfill its commitments to the Aichi Biodiversity Convention. To do so, it is necessary to quantify the current levels of biodiversity representation within existing protected areas and to identify additional conservation needs for vulnerable species and ecological systems. In this study, we assess the proportion of species ranges found in South Korea's protected areas, for the species documented in the 3rd National Ecosystem Survey. We modeled the range distribution of 3,645 species in the following taxonomic groups; plants (1,545 species), mammals (35), birds (132), herptiles (35), and insects (1,898) using the MaxEnt species distribution model and calculated how much of each species' range is within protected areas. On average, 17.4% of plant species' ranges are represented in protected areas, while for mammals and insects an average 12.0% is currently conserved. Conservation representation for herptiles averages 9.3%, while it is 8.6% for birds. Although large proportions of species that have restricted distributions should be represented in protected areas, 17 plant species, two insects (Parnassius bremeri and Lasioglossum occidens), and one bird species (Phylloscopus inornatus) with ranges smaller than 1,000 ㎢ have less than 10% of their ranges within protected areas. Establishing specific conservation goals such as the protection of endangered species or vulnerable taxonomic groups will increase the efficiency of the biodiversity conservation strategies. In addition, lowland coastal areas are critical for biodiversity conservation because the protected areas in South Korea are mainly composed of high mountainous areas.

WDM 기반 2-OLT 구조를 이용한 PON 시스템 보호 및 절체 (Protection/Restoration of PON Systems Using WDM based 2-OLT Structure)

  • ;박영일
    • 한국통신학회논문지
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    • 제37B권12호
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    • pp.1168-1173
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    • 2012
  • 본 연구에서는 2개의 OLT를 이용한 PON 보호/절체에 관해 제안하였다. 본 제안된 방식을 이용하면 고장 상황에서도 가입자 영역에 서비스를 지속적으로 할 수 있고, 정상적인 동작을 수행할 수 있게 된다. 기존 보호/절체 방식과의 차이점은 제안된 방식의 경우 두 OLT에 다른 파장을 적용함으로써 정상 상태에서 두 OLT를 모두 사용하여 이용 효율을 높인다는 점이다. 보호 모드에서는 Shared-bandwidth 할당 방식을 적용함으로써 효율을 극대화하였다. 성능 분석을 통해 제안된 시스템이 효율적으로 이더넷 기반 PON 시스템의 신뢰성을 높일 수 있음을 확인하였다.