• Proceedings of the Plant Resources Society of Korea Conference
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• 2019.04a
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• pp.60-60
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• 2019

지속가능한 개발이 주목받고 남북 평화의 시대를 맞이하여 임업분야와 농업 축산분야가 결합된 혼농임업(Agroforestry)이 주목받고 있다. 혼농임업(Agroforestry)은 식량, 과실, 풀사료, 땔감, 목재 등을 생산하고 토양보전을 실천하여 지속농업을 가능케 하는 복합영농의 한 형태이며, 북한 산지의 경우 황폐화된 산지가 많아 경제성과 산림녹화를 동시에 해결할 수 있어 많은 관심을 받고 있다. 본 연구는 강원도 하늘목장을 시범목장으로 선정하여 조사를 실시하였고, 연구조사지의 총 면적은 2.4ha로 백두대간과 오대산국립공원이 인접한 지역으로 다양한 식물상을 파악할 수 있는 지역이다. 그러므로 외래종침입에 따른 생태적 교란을 방지하기 위하여 완충지대를 설정하고 식물상 조사를 실시하였다. 그리고 조사지내의 대표 수종으로 선정된 모수만 남기고 벌채를 실시하여 변화양상을 모니터링 하였다. 2014년~2017년 총 3개년 계절별 조사를 통해 임간초지의 식물상 정보를 파악하였고 임간초지의 관속식물상을 조사한 결과 92과 250속 323종 4아종 43변종 6품종으로 총 376분류군이 조사되었다. 자원식물의 유용도 분석한 결과 식용자원(E)이 160분류군으로 가장 많은 비율을 차지하고 있었으며, 약용(M) 141분류군, 관상용(O) 45분류군으로 나타났으며, 용도미상(U) 식물도 73분류군이 분포하고 있는 것으로 나타났다. 또한 연구 대상지역의 특성을 고려하여 조성된 초지 내에서 조사료로 사용할 수 있는 식물 종을 파악하였다. 나아가 미비한 임간초지 식생의 DB를 구축하고, 지속가능한 녹색성장을 모색하여야 할 것이다.

• Journal of the Korean Chemical Society
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• v.44 no.5
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• pp.422-428
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• 2000

Optimum analytical conditions of the aluminium ion were established by flow injection analysis. Eriochrome Cyanine R(ECR) dye reacts with the aluminium ion at pH 6.0 to form a complex that exhibits maximum absorption at 535 nm. Reaction conditions including the mixing and the reaction coil length, the concentration and the pH of the buffer solutio, temperature, and injection loop volume were optimized to intro-duce this reaction into flow injection analysis. The results were as follows. A mixing coil length of 0.5 m and a reaction coil length of 4.0 m, the pH 6.0 and 1M of acetate buffer solution, the ECR concentration of 0.56 mM, the reaction temperature of 40$^{\circ}C$, the injection loop volume of 300${\mu}L$ were chosen as optimum conditions. Under these conditions the detection limit of the aluminiumion was less than 0.05 mg/L and the repeatability was better than 1%. A sampling frequency of 24 times for an hour was achieved. Interfering ions such as $F^-$, HP$O_4^{2-}$, $Fe^{2+}$, $Fe^{3+}$, $Mn^{2+}$, and other anions were tested, interference did not occur up to 1,000mg/L of ion concentration and up to 2,CO0mg/L of sulfate ion con-centration. This method was applied for the determination of aluminium ion in tap water and ground water of Jeonju and the Gochang area. The results showed that the aluminium residual in tap water of the Jeonju area was at a mean of 0.478mg/L and that in tap water of the Gochang area was at a mean of 0.278mg/L. Aluminium ion residual of the tap waters in the Jeonju area was higher level than that in the Gochang area. Aluminium residual in the ground water of the Jeonju area was 0.386 mg/L and was lower compared to 0.564 mg/L for the Gochang area.

• Ecology and Resilient Infrastructure
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• v.2 no.4
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• pp.311-316
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• 2015

This study defined and classified no-net-loss-of-greenness (NNLG) based on the law, and then assessed the NNLG index by metropolitan cities and provinces in Korea after estimating NNLG evaluation indicators for the introduction of NNLG for health improvement of urban ecosystems. The results are as follows. First, NNLG was the comprehensive meaning that was included in the greenbelt and park greenbelt and the green area which was defined by the Act on Urban Parks, Greenbelts, etc. and the National Land Planning and Utilization Act respectively. Second, NNLG was classified as a park greenbelt which was included urban parks and greenbelts such as buffer greenbelts, scenic greenbelts, and connecting greenbelts, green areas which was included in green conservation areas, green production areas, green natural areas, and green coverage which is included forests, grasslands, and wetlands that were occupied by vegetation such as trees, shrubs, and plants. Third, NNLG index by cities and provinces was assessed based on the estimation of NNLG evaluation indicators, which included parks and greenbelt areas per capita, green areas per capita, green coverage per capita, ratio of parks and greenbelts, ratio of green areas, and ratio of green coverage. As a result, Sejong city got the highest point of NNLG index and Seoul and Daegu got lowest points of NNLG index among metropolitan cities in Korea. Chungbuk got the highest point of NNLG index and Kyonggi and Jeju got lowest points of NNLG index among provinces in Korea.

• Korean Journal of Environment and Ecology
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• v.26 no.4
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• pp.498-511
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• 2012

Mountainous wetland have many species such as II grade endangered species of wild flora and fauna(Drosera rotundifolia) and environmental indicator species(Utricularia racemosa, Habenaria linearifolia, Parnassia palustris, Molinia japonica, etc.). Accordingly, the mountainous wetlands is very important. However, most mountainous wetlands will disappear by natural or artificial aridness processes. Thus, it needs to manage mountainous wetland for protecting from aridness. This study has found out the wetland status of the environmental ecology and aridness processes moreover, it has suggested ways of improving wetland conservation plan and wetland aridness management plan. According to the results of topography structure survey, Hwaeom wetland's altitude is ranged within 750~810m(87.4%), and slope is less than $10^{\circ}$. There was ideally suited mountainous wetland. However, the water supply(1.6 meters depth and 0.8 meters wide) was built on under the wetland. For that reason, there was concerned about the aridness processes by sweeping away peat layer and dropping the water level. The distribution area of hygrophyte was narrowed to 6.7% whereas, woody plants and xerophytic plants was achieved a dominant position. If it leaves the situation as it is, the mountainous wetland will be developed next succession as forest ecosystem. Therefore, in order to sustain the mountainous wetland from aridness, it is set to the base direction of conservation and management as main schemes. Moreover, we have suggested that setting the vegetation conservation and management area which considering a ecological vegetation characteristics, managing the ecotone vegetation, setting the buffer zone for protection of ecological core areas, protecting the mountainous wetland indicator species and designating the management vegetation. In conclusion, in order to sustain and maintain a soundly wetland ecosystem, it needs to several management of wetlands damage factors. 1) suppression of the excessive groundwater to basin, 2) stabilization of wetland via hydrologic storage, 3) suppression of changing and transforming wetland into forest by succession via management of xerophytic plants.

• Journal of Environmental Impact Assessment
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• v.24 no.1
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• pp.51-65
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• 2015

The flora distributed around Mt. Hwangseok were summarized as 495 taxa including 97 families, 295 genera, 394 species, 4 subspecies, 80 varieties and 17 forms. In the component ratio of taxa, pteridophyta was 4.2%, 1.2% of gymnospermae, 78.8% of dicotyledonae and 15.8% of monocotyledonae. The rare plants were 9 taxa including Aconitum chiisanense, Eranthis stellata, Aristolochia contorta, Viola albida and so forth. The Korean endemic plants were 13 taxa including Populus tomentiglandulos, Pseudostellaria coreana, Aconitum pseudolaeve, Thalictrum actaefolium var. brevistylum and so forth. The specific plants by floristic region were 16 taxa including Cimicifuga heracleifolia, Sanguisorba longifolia, Symplocarpus renifolius, Betula davurica and so forth. The plants adaptable to climate change were 11 taxa including Aconitum pseudolaeve, Ajuga spectabilis, Carex okamotoi, Rhynchosia volubilis and so forth. The naturalized plants were 20 taxa including Fallopia convolvulus, Rumex crispus, Phytolacca amrericana, Robinia pseudoacacia and so forth. The invasive alien plant was Aster pilosus. The emergence of local ecologically important species, set the correct range for the core and buffer zone, transition zone, coded will be necessary, the distribution of the specialty plant areas and rare plants, an area management plan should be organized by nature. In addition, a variety of assessment techniques and accurate data to establish the validity of the core area is also set to acquire.

• Journal of the Korean Association of Geographic Information Studies
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• v.20 no.2
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• pp.17-31
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• 2017

The purpose of this study was to carry out a comprehensive assessment of Donjibong Park in Daegu and establish a master plan for green space considering the functional characteristics of the park. For this purpose, green space in the park was assessed based on 13 indicators using three functions. A comprehensive green master plan was then proposed. Green spaces with high scores for the natural-ecological and environmental-control functions were found in the central area of the park, whereas green spaces with low scores were found near the park boundary and paved areas. Green spaces in the southeast were found to have a high score for usage functions due to their proximity to a residential area. In the master plan based on the comprehensive assessment, the plan space was divided into a conservation area, restoration area, buffer area, environmental monitoring area, observatory/trail/facility area, and waterside green space area. Also, concrete plan directions were proposed based on each plan space. These results can be utilized for establishing objective plans in the future construction of new parks.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.12
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• pp.443-451
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• 2017

The purpose of this research is to examine ways to improve the quality of life of elderly people living alone in urban areas by identifying their stress, social support, and quality of life as well as analyzing the relationships between these factors. In this research, a questionnaire survey was conducted for approximately two weeks including 232 elderly people aged 65 years and above who were using 10 senior welfare centers in the Seoul and Gyeonggi regions. The results of the analysis based on the collected data showed that of the stresses experienced by elderly people living alone in urban areas, the stresses of health, family, and psychological and social stresses had negative effects on social support and quality of life. Also, it was found that the social support of elderly people living alone had positive effects on the quality of life. Additionally, it was found that social support had a mediating effect in the relationship between stress and quality of life of elderly people living alone in urban areas. In other words, social support plays a buffer role in enhancing the quality of life regarding health, family, economy, and psychological and social stresses. This research has significant implications in that it was conducted on elderly people living alone, since elderly people living alone are not only under more stressful circumstances in a vulnerable environment than other seniors but also their quality of life is much lower. The implications of this research are that, from a social point of view, these elderly people living alone should no longer be neglected and that differentiated policy interventions for elderly people living alone is required.

• Journal of Industrial Convergence
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• v.18 no.5
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• pp.77-87
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• 2020

The purpose of this study is to analyze the effect of discrimination experiences of adolescents currently using regional children's centers on school life adaptation and the moderating effect of parent-child communication in the process. Data from the first sixth year (2016) of the Children's Panel Survey, which was collected by the Central Children's Center, were used. At the time of the survey, the sample was selected from a total of 392 adolescents who were enrolled in the third year of middle school and currently living with their parents. This study analyzed the correlation analysis of variables related to school life adaptation of adolescents using local children's centers, frequency analysis, descriptive statistics analysis, correlation analysis, and control effects to explain the moderating effect. As a result of the analysis, it was found that parent-child communication, a modulating variable, has a buffering effect in the relationship between discrimination experiences and student life adaptation. To this end, it sought to develop practical programs such as communication methods and parent-child camps. The results obtained through this study can be used as basic data to broaden the theoretical discussions on adaptation to school life of local children's centers and to prepare appropriate policy visits to expand the effects of social intervention.

• Proceedings of the Korea Water Resources Association Conference
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• 2021.06a
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• pp.303-303
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• 2021

소양호 유역의 만대가아자운지구는 2015년 비점오염원 관리지역으로 재지정 되면서 흙탕물 저감을 위해 중앙정부 차원에서 발생원 관리대책, 유출경로 관리정책 및 양한 비점오염 저감시설 등의 노력을 기울이고 있다. 하지만 상류 유역에서는 지속적으로 흙탕물이 발생되고 있으며, 뚜렷한 비점오염 저감효과가 나타나지 않고 있다. 본 연구에서는 정밀조사를 통해 흙탕물 발생 우심 소유역을 분석하고자 하였다. 정밀조사를 위해 관리지역별 하천 및 구거를 분석하였으며, 이를 통해 만대·가아·자운지구별 각 57지점, 31지점, 72지점에서 강우시 수질 모니터링을 수행하였다. 만대지구의 탁도는 167 NTU~7,970 NTU, SS농도는 164.3 mg/L~5,718.0 mg/L 로 관리지역 중 탁도 및 SS 농도가 높았으며, 시행계획상 구분된 소유역별 평균 탁도와 평균 SS농도는 만대천 상류구간이 가장 낮고, 상명천 소유역과 청룡안골, 방추골천, 방추골일천이 흐르는 소유역에서 높게 나타났다. 가아지구의 탁도는 17 NTU~962 NTU, SS농도는 17.8 mg/L~1,020.0 mg/L 로 조사되었으며, 평균 탁도와 평균 SS농도는 가아지구 말단 소유역에서 가장 낮고, 상류 소유역에서 높게 나타났다. 가아천 상류는 탁도 410 NTU와 SS농도 575.0 mg/L, 하류는 탁도 167 NTU, SS농도 197.3 mg/L로 나타나 상류에서 하류로 갈수록 탁도와 SS농도가 낮아졌으며, 상류 유역은 비점저감시설이 밀집해 있음에도 불구하고 다량의 흙탕물이 발생하는 것으로 나타났다. 그러나, 자운지구는 비점오염저감시설이 집중적으로 설치된 상류 유역에 비해 하류 소유역에서 탁도와 SS농도가 높은 것으로 조사되었다. 자운지구의 탁도는 7 NTU~761 NTU, SS농도는 10.8 mg/L~1,199.0 mg/L로 조사되었으며, 평균 탁도와 평균 SS농도는 자운지구의 하류 소한천 소유역이 가장 낮고, 조항천 말단 소유역에서 높게 나타났다. 정밀조사 결과 탁도 및 SS농도가 높게 나타나는 소유역은 공통적으로 고랭지밭의 비율이 높게 나타났기 때문에 고랭지밭에서 발생되는 흙탕물을 효과적으로 관리하기 위해서는 최근 환경부에서 시범 추진하고 있는 농경지 완화조성, 토지 매수사업, 식생완충대 조성 등의 발생원 관리대책 확대 추진이 필요할 것으로 판단된다. 또한 소양호 유역의 비점오염원관리지역은 2020년 비점오염원 관리대책 시행계획이 수립되어 향후 2026년 비점오염 저감 대책이 추진됨에 따라 지속적이고 정밀한 모니터링이 필요할 것으로 판단된다.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2000.04a
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• pp.754-757
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• 2000

인터넷을 이용한 사이버 거래가 빠른 속도로 증가함으로써 기업에게 있어 인터넷 쇼핑몰 구축은 더 이상 선택사항이 아닌 필수 사항이 되었다. 하지만 현재 사이버 거래 수준은 전통적 상거래 수준에 못 미칠뿐더러 거래 항목에 있어서도 매우 제한적인 것이 사실이다. 앞으로 사이버 거래는 계속적으로 증가하리라 전망되지만 제품의 특성 혹은 고객의 기호에 따라 전통적 상거래도 그 영역을 차지하며 함께 양립하여 발전할 것이다. 이에 본 연구에서는 기존의 상거래 시스템에 사이버 거래기능을 추가하는 모델을 제시한다. 먼저 지리적으로 멀리 떨어져 있는 유통망의 정보화를 위하여 인터넷 기술을 이용하고 공급체인(Supply Chain) 전체에 걸친 동기화를 위해 TOC(Theory of Constraint)의 DBR(Drum-Buffer-Rope) 스케줄링을 응용한다. 모든 생산 및 유통의 흐름 속도가 최종 분배 센타에 접수되는 고객의 요구에 따라 이루어지게 함으로써 공급체인 전체에 걸친 동기화를 이룰 수 있고 지속적인 버퍼 관리를 통하여서 재고의 절감은 물론 미출고의 발생도 최소화할 수 있다. 만약 분배 센타에 재고부족 현상이 일어날 경우에는 공급체인 상의 능력제약자원(Capacity Constraint Resource . CCR)을 찾아 개선 활동을 수행하며 공급체인의 흐름 속도를 능력제약자원에 맞추어 조절한다. 분배 센타에서 대리점 혹은 사이버 고객으로의 배송은 부분적 분할납품 Partial Transshipment : PT) 전략을 적용한다. 즉 각 분배 센타가 관리하는 수요지 중 인접한 지역을 부분적 분할납품 전략 적용 수요지로 선택하고 사이버 거래를 통해 생성된 물류가 부분적 분할납품 전략 적용 수요지에 분배되게 함으로써 각 분배 센타의 재고 완충역할을 수행하게 한다. 이에 따라 안전 재고 및 역 배송을 최소화 할 수 있을 뿐 아니라 미 출고로 인한 손실을 최소화하며 고객의 서비스를 일정하게 유지시킬 수 있을 것으로 기대된다.