• 한국지구과학회지
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• 제27권4호
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• pp.425-432
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• 2006

본 논문에서는 노은 생활 폐기물 매립장의 사전 환경 영향 평가 단계에서 수행되었고 주로 기반암 깊이와 침출수 분포를 조사하기 위해 굴절법 토모그래피 방법이 수행되었다. 본 탐사 방법은 토목 분야와 환경 분야에 응용되어왔다. 굴절법 토모그래피 방법을 수행하기 위해 침출수의 예상 유동방향과 직각으로 추정되는 3개의 측선을 설정하여 적용하였다. 본 연구 지역인 노은 생활 폐기물 매립장은 개략적으로 3층 구조로 구성되어 있고 하류에서 상류 지역으로 갈수록 기반암까지 깊이가 점진적으로 얕아지고 특히 하류 지역에서는 부분적으로 침출수 등이 충진되어 있는 지층이 존재하고 있음이 확인되었다. 따라서 생활 폐기물 매립장 하부 지반의 침출수의 분포 뿐만 아니라 매립장 하부의전체적인 지반 구조를 분석하기 위해 굴절법 토모그래피 탐사가 효과적인 방법으로 확인되었다.

• 대한지하수환경학회지
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• 제4권2호
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• pp.61-72
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• 1997

임해지역에서의 지하수 이용 및 지하공동 건설시 육지부 대수층으로의 해수침투가 문제될 수 있으며, 지하수질의 저하 또는 지하공동내의 시설부식을 초래할 수 있다. 본 연구는 임해지역의 지하공동시설 주변 지표수와 지하공동내 유입수에 대한 수질 분석과 환경동위원소 분석, 그리고 지하공동과 해안사이에 위치하는 수직수벽공에서의 심도별 수리특성조사와 수리간섭시험 등을 통하여 해수침투 현상을 규명하고, 이를 수리지질학적 관점에서 해석하였다. 육지부가 자유면대수층 조건일 때 이론적인 담수-해수체 경계면과 연구지역에서 확인된 해수침투경로와는 상당한 차이가 있었다. 지하공동으로 침투하는 해수의 주 경로는 해수체와 연결되는 sub-horizontal 단열대인 것으로 해석되었다. 임해지역에서 준평형 상태의 지하수체계에 변화를 초래하는 인위적 행위로 인하여 담수-해수체 경계면에 영향을 미치는 가장 큰 요인은 해수체와 연결되는 투수성 단열대의 분포특성이다.

• 대한기계학회논문집B
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• 제34권10호
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• pp.893-899
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• 2010

박동유동조건에서 관상동맥 내의 유동특성과 혈류역학적 인자 분포를 선행연구에서 수행하여 혈류역학이 관상동맥 내의 협착현상과 연관관계가 있음을 밝혔다. 동맥경화증의 호발부위인 관상동맥 분지부에서 혈류역학적 변수를 분석하여 동맥경화증의 발생기전을 규명하는 것이 본 연구의 목적이다. 동맥경화증에 의한 협착현상은 혈액과 혈관벽 사이의 생화학 반응뿐 아니라 유동박리나 벽전단응력과 같은 혈류역학적 인자와도 관계 있음을 확인하였다. 관상동맥 분지부의 분지각이 증가할수록 분지부 단면에서의 재순환영역의 크기가 증가하고 교란유동이 발생하게 된다. 이 재순환영역이 관상동맥에서 동맥경화의 시작점으로 의심되는 영역이라 할 수 있다.

• 농촌계획
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• 제12권4호
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• pp.83-88
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• 2006

Recently, management and restoration efforts using the plants promote the disturbed habitats such as a set-asides or field boundaries. But, side effects are coming out because of using the exotic plants in restoration process. This study was conducted to select the native plant species used for restoration through the vegetation survey and plant community analysis at small stream-side in rural villages. We surveyed at two small stream-sides in open field and high land area in 2005 as a case study. Total 126 species was found at small stream side in open field area. As the result of important value' calculation, Persicaria thunbergii 23.0%, Humulus japonicus 18.6%, Phragmites communis 4.4%, Bromus japonicus 4.2%, and Rosa multiflora 3.4% were in the order of important value. Total 92 species were found at small stream side in high land area. As the result of important value' calculation, Dactylis glomerata 16.1%, Artemisia princeps var. orientalis 11.0%, Persicaria thunbergii 10.9%, Humulus japonicus 9.3%, Phragmites japonica 5.2% and Phragmites communis 3.5% were in the order of important value. We selected some plant species to use in restoration after due consideration of problems of exotic plant and high coverage and density species, and ecological process; Persicaria thunberii, Phragmites communis, Bromus japonicus, Rosa multiflora, Equisetum arvense, Digtaria sanguinalis, Impatiens textori, and Artemisia princeps var. orientalis in open field stream-side, and Artemisia princeps var. orientalis, Persicaria thunbergii, Phragmites japonica, Phragmites communis, Artemisia selengensis, Panicum bisulcatum, Rorippa indica, and Equisetum arvense at hghland stream-side. We will verify the selected native plants and plan the utilization of the native plants in restoration at stream-side in rural village.

• 한국농공학회지
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• 제35권2호
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• pp.33-42
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• 1993

In order to obtain the basic information for the optimal settlement planning in the reclaimed area, various existing settlement conditions on reclaimed farming village were analysed through a case study of in-and-round farming villages in Deuk Ryang Reclaimed Area. By comparison study between in-and-around villages, the allocation policy of farming settlement in the samll and medium scale area was proposed. The results obtained in this study were as follows ; 1.The population structure of the inner village(Ansim village) had become worse than the around village during 1976~1981 period from the viewpoint of total and female emigration ratios. Especially, the originally unbalanced sex ratio of Ansim village had worsen to the unacceptable ratio of 1.5 : 1(male : female). Therefore, the structural stability of the population should be carefully improved in the newly reclaimed farming villages by the systematic long-term controlling machanism.2.The farming status of Ansim village was much lower than the around villages viewing of the cultivated acreage and agricultural machinery stock Therefore, the continuous and intensive governmental support different from the existing farming area should be required for the settling of reclaimed farming. 3. The regularity of the village site as a planned village, though pursed in the first phase of village construction, had been severely disturbed inflowing of squatters. Recently, there are increasing vaccant houses in the village, and the level of living amenities and personal mobility of Ansim village are much lower than the around village. So, now, the physical structure of the village should be improved to the level of village reconstruction or new village construction. 4. The cultivated area of Ansim village leans to the south side which would be unfavoured by the farmers of the around villages, while its distributing pattern should be concentric around the village site. This phenomenon disturbs the central fuction of the planned farming village. In this respect, role assignment, relationship and balance of competence in farming activities should be planned between in-and-around villages in the reclaimed area from the initial stage. 5. Putting together the above results in this study, the farming and living conditions of Ansim village threaten its existence as a planned new farming village in the reclaimed area. And, so, the full scale reconstruction of village structure, including moving to the new site, should be designed as soon as possible. Although further many studies should be carried out, it would be sure that the new village planning should be reconsidered in the small and-medium scale reclamation works.

• Journal of Ecology and Environment
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• 제43권2호
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• pp.117-128
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• 2019

Background: Cliffs are a major plant habitat around the coastal area, but in contrast to sand dunes and salt marshes, they have been little investigated in Korea. There are simple descriptions of cliff vegetation in studies on island vegetation, but there is no published paper, which addressed sea cliff vegetation synthetically. Furthermore, the coastal area where this study was carried out was designated as a conservation reserve. Even though, this area is exposed to intense recreational use such as trekking in these days. This study aims to clarify spatial distribution and structure of vegetation along the environmental gradient on coastal cliff and plateau in the Janggi peninsula (Homigot) located on southeastern Korea. Further, this study has also another objective to prepare a restoration plan to protect this conservation reserve from intense human disturbance. Results: Landscape elements were arranged in the order of sea cliff risen directly on the sea, seashore, coastal cliff, and plateau covered with relatively deep soil in a coastal area of the Janggi peninsula (Homigot), southeastern Korea. Vegetation was sampled at 59 plots arranged from the sea cliff through the seashore and coastal cliff to plateau. The sea cliff, seashore, and coastal cliff, which compose the coastal landscape, were dominated by the seashore spatulate aster (Aster spathulifolius Maxim.) community, dwarf sand sedge (Carex pumila Thunb.) community, and seashore spatulate aster (Aster spathulifolius Maxim.) community. On the plateau corresponding to the ridge of the coastal cliff, black pine (Pinus thunbergii Parl.) community, golden rain tree (Koelreuteria paniculata Laxmann) community, east Asian hackberry (Celtis sinensis Pers.) community, sawleaf zelkova (Zelkova serrata Makino) community, and Korean oak (Quercus dentata Thunb.) community were established in the mentioned order along distance from the sea. Stand ordination showed a vegetation sequence from the seashore through the cliff to the plateau, consistent in its overall pattern among sites. This was dominated by topography. There is evidence for the importance also of salinity, drought and of soil depth. Conclusion: The lack of scientific interest in cliffs to date is in striking contrast to the commonness of cliffs around the whole national territory and to the attraction cliffs have had for humans throughout history. Cliffs provide a unique habitat, rarely investigated from an ecological viewpoint. Cliffs may represent an invaluable type of ecosystem, consisting of some of the least disturbed habitats on earth and contributing more to the biodiversity of a region than their surface coverage would indicate. Although this coastal area where this study was carried out was designated as a conservation reserve, this area is in danger of severe disturbance due to excessive recreational use. We recommended a restoration plan to protect this area from such a disturbance.

• 한국조경학회지
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• 제37권1호
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• pp.50-64
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• 2009

도시 근교에 입지한 담수호소는 다양한 생물이 서식하는 생물다양성의 보고이나, 무계획적인 이용의 증가로 수질오염과 식생훼손의 위험에 직면해 있다. 이에 본 연구는 사천시 두량저수지를 대상으로 담수호소의 생물다양성 유지와 이용의 조화를 추구하기 위한 관리방안을 제안하고자 동 식물 생태계의 정밀한 조사 분석 자료에 근거한 관리지역 설정 과정을 거쳐 생물다양성 증진을 위한 생태적인 관리방안을 제안하였다. 생태계 조사 분석 자료를 바탕으로 비오톱 유형 평가, 야생동물 서식처 평가, 보호종 출현 유무를 종합한 결과, 생태계 보전지역으로 설정된 지역은 층위 구조가 형성된 자연림과 생물서식의 기반을 제공하는 수면 및 습지, 서식처 다양성이 높은 주연부 지역이 보전가치가 있었다. 관리지역은 식생이 교란된 지역, 오염강도가 높은 상업지, 공업지 등과 낚시로 인해 훼손된 수변지역으로, 식생천이 유도, 관목식재 등의 식생관리와 오염물질관리 체계 구축을 통한 적극적인 관리가 시도되어야 할 것이다. 담수호소에 있어 수변식생과 산림식생 훼손은 생물다양성 및 수질에 직접적인 영향을 미치므로 보존지역과 이용지역을 명확하게 구분하고 이용지역 이외에는 엄정하게 복원 관리하여야 할 것이다.

• 한국환경복원기술학회지
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• 제13권3호
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• pp.114-127
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• 2010

This study aimed at reviewing the case examples of environmental assessment of development projects within management zones, identifying problems and improvement opportunities and suggesting the direction of environmental assessment for management zones that are increasingly segmented Findings showed that first, the assessment of environment soundness in management zones must incorporate the national land environmental map and wide-area ecological axes established by the Ministry of Environment. Second, regarding development activities in management zones, rather than an issue of simply destroying natural environment in a development site itself during a development period, an issue of permanently isolating ecosystems from surrounding areas in a mid/long-term perspective and continually polluting water in mid-stream/upstream regions where sites are located must be considered. Third, in the case of development projects with vast areas, existing plant communities will be disturbed and the naturalness of vegetation will gradually decline due to foreign tree species introduced for landscape architecture. Therefore, creating buffer forests at forest boundaries and planting native tree species that are same as nearby tree species must be examined. Last but not least, when assessing the environmental soundness of management zones, it would be crucial to comprehensively review the environmental, social and locational features of management zones, including surrounding areas, and set the direction of environmental assessment accordingly.

• Clinical and Experimental Pediatrics
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• 제46권2호
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• pp.188-191
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• 2003

저자들은 발열, 피부발진, 물린 부위의 가피(eschar) 등을 주소로 내원하여, 혈청학적으로도 쯔쯔가무시 열로 확진된 소아에서 5일 동안의 azithromycin 투약으로 특별한 합병증 없이 완치된 4례를 경험하였기에 문헌 고찰과 함께 보고하는 바이다.

• 음성과학
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• 제9권3호
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• pp.87-97
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• 2002

The purpose of this study is to analyze the speech duration in Korean-speaking aphasics. Five patients with nonfluent aphasia (2 with traumatic brain injury and 3 with strokes) and five normal adults participated in this experiment. The mean age in patients with nonfluent aphasia was $45.8\pm2.3$ years and $47.4\pm2.3$ years for the normal adults. The Computerized Speech Lab was used to evaluate the acoustic characteristics of the subjects. Voice onset time, vowel duration, total duration, hold and consonant duration were evaluated for the monosyllabic and the polysyllabic words. The patients with nonfluent aphasia did not show the voicing bar on hold area, however, it was seen in the normal persons in the intervocalic position. Explosion duration of glottalized stops in the intervocalic position was significantly prolonged in nonfluent aphasics in comparison with the normal persons. This suggestes that the laryngeal adjustment is disturbed in these patients. Consonant duration, vowel duration, and total duration of the polysyllabic words were significantly longer in the patients with nonfluent aphasia than those of the normal persons. These results demonstrate the disturbances in controlling articulatory muscles during sound production in patients with nonfluent aphasia. The objective and quantitative analysis based on the acoustic characteristics of nonfluent aphasics, will be very useful in therapeutic planning and on the the effects of speech therapy.