• 건축역사연구
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• 제20권6호
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• pp.147-168
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• 2011

The objective of this study is to establish the method of conservation for traditional Korean settlements, based on the field surveys on the representative traditional settlements in Korea and China. The method is approached from grasping the conservation mechanism in which non-physical aspects deeply influence physical ones. The study has analyzed the characteristics and problems in the current methods of conservation for the traditional settlements, through comparing conservation practices at the World Heritage-class settlements such as Yangdong, Hahoi, and Oeam villages in Korea and Xidi-cun, Hong-cun, and Dangjia-cun in China. As a consequence of the study, the conservation method for the traditional Korean settlements is established as follows; Firstly, the conservation targets are classified into 4 types in terms of the relations of elements; individual, correspondent, sequential, and network elements. Secondly, the conservation strategies include the structuralizations of targets, by means of sequencing and networking. Thirdly, the conservation programs are made in consideration of the sustenance, transformation, replacement, and extinction of traditional use patterns.

• 한국유기농업학회지
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• 제12권4호
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• pp.377-397
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• 2004

The objectives of this study are to find out, the fact-analysis of environmental friendly farm households around the Chuam Dam through the sample survey, 2) the developing strategies to improve the EPA on the assumption that is the conservation of Chuam Dam's water quality. The data used in this study comes from 75 sample farm households. The developing strategies to improve the EPA around Chuam Dam was found out that the efficiency measure of land utilization around CImam Dam, producing of high quality and safety agricultural products, promoting of the EPA connected with tourist agriculture, improving of the EPA products and supporting of price and income. In conclusion, there must be strategic measures to increase the income of environmental friendly farmers and to conserve the Chuam Dam's water quality.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제12권11호
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• pp.5449-5464
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• 2018

Recent works have validated the possibility of reducing the energy consumption in wireless heterogeneous networks, achieved by switching on/off some base stations (BSs) dynamically. In this paper, to realize energy conservation, the discrete time Markov Decision Process (DTMDP) is developed to match up the BS switching operations with the traffic load variations. Then, an asynchronous decision-making algorithm, which is based on the Bellman equation and the on/off priorities of the BSs, is firstly put forward and proved to be optimal in this paper. Through reducing the state and action space during one decision, the proposed asynchronous algorithm can avoid the "curse of dimensionality" occurred in DTMDP frequently. Finally, numerical simulations are conducted to validate the effectiveness and advantages of the proposed asynchronous on/off strategies.

• 설비공학논문집
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• 제12권6호
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• pp.609-615
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• 2000

The energy conservation is one of the most important issues in recent years. Especially, the energy conservation through improved control strategies is one of the most highly possible area to be implemented in the near future. The energy conservation of the ice storage system can be accomplished through the improved control strategies. A real time building load prediction algorithm was developed. The expected highest and the lowest outdoor temperature of the next day were used to estimate the next day outdoor temperature profile. The measured dry bulb temperature and the measured building load were used to estimate system parameters by using the on-line weighted recursive least square method. The estimated hourly outdoor temperatures and the estimated hourly system parameters were used to predict the next day hourly building loads. In order to see the effectiveness of the building load prediction algorithm, two different types of building models were selected and analysed. The simulation results show less than 1% in error for the prediction of the next day building loads. Therefore, this algorithm may successfully be used for the development of improved control algorithms of the ice storage system.

• 보존과학회지
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• 제34권6호
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• pp.549-556
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• 2018

In November 2011, various artifacts were excavated from the No. 8 stone-lined tomb in Suchon-ri, Gongju by the Chungnam Institute of History and Culture. These included artifacts with lacquered mainframe and silvery metal ornament. These were recovered together with soil and underwent conservation treatment. In this paper, we discuss the scientific analysis and conservation treatment of the lacquered artifacts excavated from the Suchon-ri site. Among our findings is that the artifacts have three layers of lacquer coating and the metal parts are primarily composed of Ag. As the artifacts were recovered with soil from the site, the soil was removed from underneath and inside the artifacts. The inside of the lacquerware was reinforced with rayon paper using 3% funori, and the metal was treated with acrylic resin after removing the acrylic resin previously used to recover the artifact, followed by cleaning. The metal was also internally reinforced with gauze. Finally, the interior reinforcement was made using PVA and resin in pulp and attached with funori to preserve the shape of the lacquerware, and the exposed rayon was finished with acrylic paint. The main advantages of this study are its review of conservation treatment strategies for lacquer artifacts whose numbers have recently increased, and the application of new conservation treatment methods.

• 한국자원식물학회지
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• 제28권4호
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• pp.400-410
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• 2015

Juniperus chinensis (Cupressaceae) is a valuable woody plant resource, but this rare plant is only distributed in restricted regions in Korea. In this study, we surveyed the geographic distribution regions, variation of sex ratio and the dynamics of natural populations of J. chinensis. in order to establish conservation strategies for the sustainable conservation of this important resource tree. The 17 natural populations of J. chinensis are restrictively distributed in the shore cliffs of (1) Ulleungdo island, (2) Gyeongju-si to Gangneung-si of the eastern coast, the riverside cliff along (3) Donggang-river of Jungsun-gun and Pyeongchang-gun and (4) branch of Nakdonggang-river in Uiseong-gun. The populations in Ulleungdo island showed continuous population distribution of over 200 individuals, but populations in other regions had discontinuous population distribution of under 200. The population of J. chinensis surveyed in Korea was estimated in ca. 3,200 individuals. The sex ratio (male/female) among populations of J. chinensis was diverse with variation from 0.46~1.67 range, but showed no significance. The sex ratio of the total individuals by species level was 0.74, and the percentage of female tree was significantly higher than the male. The results of dynamics analysis within population among regions showed that seedlings and saplings of J. chinensis in three regions surveyed were continuously regenerating. The distribution of DBH class showed a stable population structure of inverse J shape graph, but fragmentation and decrease in populations because of invading broad-leaved shrubs and trees from the surroundings were concerned. Further studies, and in situ and ex situ conservation strategies for the sustainable conservation on natural populations of this rare resources woody plant, J. chinensis in Korea are recommended.

• 에너지공학
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• 제3권2호
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• pp.121-129
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• 1994

• 한국산림과학회지
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• 제102권3호
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• pp.428-436
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• 2013

우리나라 희귀식물인 꼬리겨우살이(꼬리겨우살이과) 자생 집단의 효율적인 보전대책을 수립하기 위하여 자생 집단의 분포와 자생지 특성을 구명하고, 이를 토대로 보전지위 평가를 수행하였다. 한반도에서 꼬리겨우살이는 지리산에서부터 백두대간을 따라 설악산까지 분포하였으며, 전체 개체 중 97.8%가 강원도 지역에 집중분포 하였다. 그리고 꼬리겨우살이의 1,385개체가 480개의 기주식물에 기생하는 것으로 확인되었으며, 해발 353~1,250 m의 범위에서 광이 충분한 능선부위에 분포하는 것으로 관찰되었다. 꼬리겨우살이의 기주식물 범위는 5과 6속 10분류군(9종 1변종)이었으며, 그중 신갈나무에서 81.5%가 확인되어 가장 선호하는 결과를 보였다. 꼬리겨우살이의 분포와 자생지 특성조사 결과를 토대로 IUCN 적색목록 기준에 의한 보전지위를 평가한 결과 지역수준에서 VU등급으로 분류되었다. 그리고 꼬리겨우살이의 최대 분포지역인 설악산과 태기산, 오대산 지역에 대해 현지 내 보전구역으로 설정하여 집중보호를 해야 할 것으로 판단되었다. 이와 같이 꼬리겨우살이의 자생 집단의 지속가능한 보존을 위한 보전전략과 이를 위한 전략수립을 도출하였다.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
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• pp.361-364
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• 2005

The use of remotely sensed data and geographic information system (GIS) to develop conservation-oriented watershed management strategies on Imha Dam, Korea, is presented. The change of land use for study area was analyzed using multi-temporal Landsat imagery. A soil loss model was executed within a GIS environment to evaluate watershed management strategies in terms of soil loss. In general, remotely sensed data provide efficient means of generating the input data required for the soil loss model. Also, GIS allowed for easy assessment of the relative erosion hazard over the watershed under the different land use change options. The soil loss model predicted substantial declines in soil loss under conservation-oriented land management compared to current land management for Imha Dam. The results of this study indicate that soil loss potential (5,782,829 ton/yr) on Imha Dam in 2003 is approximately 1.27 times higher than that (4,557,151 ton/yr) in 1989. This study represents the first attempt in the application of GIS technology to watershed conservation planning for Imha Dam. The procedures developed will contribute to the evolution of a decision support system to guide the land planning and dam management in Imha Dam.

• 한국어류학회지
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• 제21권sup1호
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• pp.52-62
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• 2009

한반도 주변 3개 해역은 서로 다른 지형과 다양한 해류의 교차로 종다양성의 근간이 된다. 또한, 복잡한 해류가 만나는 전선 주변으로는 좋은 어장이 형성된다. 그러나, 남획에 의한 자원의 감소 및 EEZ 발효에 의한 어장의 축소는 새로운 수산자원 관리법을 필요로 하게 되었다. 수산자원의 효율적 관리를 위해 우선 다양한 해양환경에 적응한 지역개체군의 실체를 파악하는 것이 필요하다. 지역개체군의 형태 및 유전에 관한 연구는 자원의 관리단위 및 구역을 명확히 하는 데 기여할 것이다. 최종적으로 해역별 수산자원의 관리방안 제시가 가능할 것으로 기대된다.