• 한국환경복원기술학회지
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• 제21권4호
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• pp.65-73
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• 2018

Although the road construction in forest is increasing and there is a need for development ecological restoration on deforest area, no consideration has been given to individual trees in there. This study analyzed aerial photographs of deforest area before and after road construction for determining the degree of forest destruction by extracting individual trees. Study area was selected in the sites where are damaged by road construction in GongJu-si, YuSung-gu, and YeongDong-gun. The aerial photograph taken 1979 before construction is panchromatic image of 80cm in GSD (Ground Sample Distance) and other photograph taken 2016 after construction is multi-spectral image of 10cm in GSD. In order to minimize the difference of GSD, we conducted image re-sampling process for setting to same GSD for the two photographs. After that we carried out visual interpretation method for determining to change of individual tree. The result found that for GongJu-si of the number of individual tree was 1,014 in 1979 and 886 in 2016, which decreased by 128 (12.6%) and the average width of those decreased from 5.77m to 5.75m by 0.47%. In case of YoungDong-gun, the number of it was 761 in 1979 and 746 in 2016, which decreased by 2.0% and the average width of it decreased from 8.99mm to 8.90m by 1.1%. Lastly in case of YuSung-gu, the number of it was 1,578 in 1979 and 988 in 2016, which decreased by 37.4% and the average width of it decreased from 7.09m to 6.65m by 6.21%. these result imply that road construction causes destruction of forests. Since there are limitations such as errors due to researcher, it is necessary to construct a quantitative analysis method for the change of the deforest area. It is need to study the method of extracting individual tree in deforest area more accurately using high-resolution image of GSD 10cm or more as well. This study can be used as a basic data for the ecological restoration of the deforest area considering characteristics of individual tree such as height, diameter at breast height, and biomass.

• 한국수자원학회논문집
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• 제42권7호
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• pp.525-535
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• 2009

본 연구에서는 상수관망에서 개별적으로 노후도가 심하여 개량이 필요한 구간을 보다 정확하게 구분하기 위해 새로운 개별관로 정의 방법이 개발되었다. 적절한 관로 최소구성성분 길이를 결정하기 위하여 여러 가지 관로 최소구성성분 길이에 대한 평균 누적파손횟수경사선의 분산값을 비교하여 가장 큰 분산값을 나타내는 관로 최소구성성분 길이인 4 m 를 연구대상 지역의 상수관망에 적용하였으며 관로 ID는 39개로 구분되어졌다. 관로의 경제적 최적교체 시기는 한계파손율과 관로의 파손경향모형을 이용하여 결정되었는데, 각 관로 ID에 대하여 관로의 선형적 파손경향, 지수적 파손경향 또는 선형과 지수형 사이에 있는 파손경향 모두에 적용될 수 있는 General Pipe Break Prediction Model(Park and Loganathan, 2002)과 수정된 시간척도를 이용한 ROCOF(Park et al., 2007)를 적용하여 연구대상 상수관망의 최적교체시기를 산정 및 분석하였다. ROCOF 모형화 과정에서 대수-선형과 와이블 ROCOF를 적용 후 최대로그우도 추정값을 비교하여 최대로그우도가 큰 값을 가지는 ROCOF를 각 관로 ID의 ROCOF로 사용하였다. 관로파손으로 인한 사회적 비용이 관로의 최적교체시기에 미치는 영향도 분석되었다.

• 한국수자원학회논문집
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• 제33권S1호
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• pp.124-129
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• 2000

• 수산해양교육연구
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• 제10권2호
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• pp.162-183
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• 1998

The fisheries resources control system in the Fisheries Act of Korea is introducing technical management method and input control method that controls fishing effort. Fishing effort control system of Korea aiming at realizing the maximum sustainable yield does not regulating the limitation of fishing quota and the limitation of fisheries object target fish. Therefore fishing operators who have fishing permit can use fishery resources without any restriction of fishing quota. But there are no rules that can controlling capacity of productivity of fishing by developing of fishing technic and fishing gear. For those reasons, productivity of fishing is superior to reproductivity of fisheries resources. Therefore, the Fisheries Act of Korea rearranges a legal basis for an introduction of fisheries resources management system by TAC, but the contents to be possible for a legal guarantee is not included and it is exceedingly defective as abstract and institutional devices. And that the affairs to be required for an enforcement of the said regime was placed in an administrative mandatory legislation and the danger to be degenerated is high in accordance with the bureaucratic self-righteous and/or the coercion of group's interest concerned and accordingly its substitute legislation system is keenly required. TAC system that is going to be introduced in our country is expected to enforce the Olympic fishing method and the individual quota method in parallel. This method is not certainly proper, because it occurs to overcapitalize and to compete fishing amounts between fishery operators. So as to prevent overcapitalization and fishing competition between fishery operators, and the exhaustion of coastal fisheries resources, individual transferable quota system should be introduced in Korean sea. Accordingly this thesis has attempted to constitute a view to improving problems of the traditional fisheries resources control system and introducing TAC fisheries resources control system.

• 한국환경과학회지
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• 제11권9호
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• pp.843-849
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• 2002

According to tourism resources in Kyonggi province, tourist behavior was dramatically different in that tourists utilizing natural resources were mainly interested in static tourism activities and sight seeing activities while tourist using socio-cultural resources preferred with dynamic tourism activities and relaxation tourism. Therefore, the objectives of reconstruction should be adjusted depending on types of tourism resources (i.e. natural and socio-cultural resources) or natural intensity as well as the development goal of recreational tourism. In contrast, historic and cultural resources surrounded with natural resources showed higher revisit rate, and was conceived as better touring site than individual resource because of historical people, traditional custom, natural sight seeing, etc. Therefore, it is believed that proper utilization of natural resources will increase revisit rate and create new conception as a famous touring site.

• 한국산림과학회지
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• 제80권3호
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• pp.287-295
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• 1991

국립공원(國立公園)을 포함한 자연휴양지(自然休養地)에서 과도한 개발에 따른 자원파괴나 무절제한 이용행위로 인한 환경오염현상은 Social Dilemma에 기인하는 현상으로 볼 수 있다. 자연휴양지(自然休養地)의 Social Dilemma는 공공자원(公共資源)인 산림휴양자원(山林休養資源)을 개발하고 관리하는 과정에서 발생하는 "개인의 이윤추구행위와 공공이익간의 갈등(葛藤)"을 말한다. Social Dilemma는 2가지 특성으로 요약된다. 첫째, 공동체의 구성원 각자가 자신의 이익만을 추구할 경우, 서로 협동하는 경우와 비교해서 더 큰 손해의 댓가를 치러야 하고, 둘째, 공동의 이익을 위해 협동을 하는 경우에는 구성원 각자는 더 큰 보상을 받게 된다. 국립공원(國立公園)에서 Social Dilemma의 해소방안(解消方案)은 크게 구조적(構造的)인 접근방법(接近方法)과 개별적(個別的)인 접근방법(接近方法)으로 구분되고, 구조적(構造的)인 접근방법(接近方法)에는 관리대표자(管理代表者)의 선출(選出), 선택적(選擇的) 보상제도(補償制度) 및 자원(資源)의 소유(所有)나, 관리(管理)를 개별화(個別化)하는 방법이 있으며, 개별적(個別的)인 접근방법(接近方法)에는 직접대화(直接對話)와 홍보(弘報) 및 교육적(敎育的)인 접근법이 포함된다. 본 연구에서는 실험실 연구와 공원현장실험연구의 결과를 Social Dilemma 이론에 의해 종합함으로써 자연휴양지자원에서의 Social Dilemma 이론의 적용을 위한 근거를 제시하였다.

• 가족자원경영과 정책
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• 제7권2호
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• pp.117-130
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• 2003

This study investigates the literatures of leisure function and resource of the elderly to consider deeply the meaning of their leisure. In conclusion, this study presents the leisure of the elderly has both of positive and negative functions individually, socially and economically and they have the resources of individual, human and social as the usable resources for leisure but each of resources has disturbing restrictions. On the actual condition of elderly's leisure activity, they enjoy negatively like a watching TV and the using rate of leisure facilities is lower than other age groups.

• 한국수정란이식학회지
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• 제29권1호
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• pp.91-99
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• 2014

Oxygen consumption is a useful parameter for evaluating mammalian embryo quality, since individual bovine embryos was noninvasively quantified by scanning electrochemical microscopy (SECM). Recently, several approaches have been used to measure the oxygen consumption rates of individual embryos, but relationship between oxygen consumption and pregnancy rates of Hanwoo following embryo transfer has not yet been reported. In this study, we measured to investigate the correlation between oxygen consumption rate and pregnancy rates of Hanwoo embryo using a SECM. In addition to, the expression of pluripotent gene and anti-oxidant enzyme was determined using real-time PCR by extracting RNA according to the oxygen consumption of in vivo embryo. First, we found that the oxygen consumption significantly increased in blastocyst-stage embryos (blastocyst) compared to early blastocyst stage embryos, indicating that oxygen consumption reflects the embryo quality (Grade I). Oxygen consumption of blastocyst was measured using a SECM and total cell number of in vitro blastocyst was enumerated by counting cells stained by propidium iodide. The oxygen consumption or GI blastocysts were significantly higher than those of GII blastocysts ($10.2{\times}10^{15}/mols^{-1}$ versus $6.4{\times}10^{15}/mols^{-1}$, p<0.05). Total cell numbers of in vitro blastocysts were 74.8, 90.7 and 110.2 in the oxygen consumption of below 10.0, 10.0~12.0 and over $12.0{\sim}10^{15}/mols^{-1}$, respectively. Pregnant rate in recipient cow was 0, 60 and 80% in the transplantation of embryo with the oxygen consumption of below 10.0, 10.0~12.0 and over $12.0{\times}10^{15}/mols^{-1}$, respectively. GPX1 and SOD1 were significantly increased in over -10.0 group than below 10.0 groups but in catalase gene, there was no significant difference. On the other hand, In OCT-4 and Sox2, pluripotent gene, there was a significant difference (p<0.05) between the below-10.0 ($0.98{\pm}0.1$) and over 10.0 ($1.79{\pm}0.2$). In conclusion, these results suggest that measurement of oxygen consumption maybe help increase the pregnant rate of Hanwoo embryos.

• 한국수자원학회논문집
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• 제40권1호
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• pp.63-72
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• 2007

본 연구의 핵심은 유역별 통합관리에 필요한 재원을 중앙과 지방정부 그리고 유역내의 지자체간에 어떠한 기준으로 분담하느냐를 다루는 것이다. 이를 위하여 본 연구에서는 재원의 배분을 유역 내의 이수, 치수, 수질개선에 따른 분담원칙과 이를 현실적으로 적용할 공통기준과 개별기준을 설정하고, 설정된 기준에 대한 가중치를 계층적 의사결정기법을 통하여 산정하였다. 재원분담 방안을 유역별로 적용한 결과, 합리적인 재원의 조달 방법이 유역별로 매우 상이함을 발견하였다. 한강과 영산강 섬진강 유역은 개별기준과 수익자 부담원칙에 충실한 부담금적 성격이 타당한 반면, 낙동강과 금강유역은 공통기준과 부담능력에 충실한 조세적성격의 재원배분이 합리적임을 발견하였다.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2007년도 Proceedings of ISRS 2007
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• pp.642-645
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• 2007

Mounted in aircraft, LiDAR (Light Detection And Ranging) technology uses pulses of light to collect data about the terrain below. The main objective of this study was to extract reliable the individual tree and analysis techniques to facilitate the used LiDAR data for estimating tree crown diameter by measuring individual trees identifiable on the three dimensional LiDAR surface. In addition, this study can be quantitative analysis of individual tree through the canopy parameter.