하천변의 식생분포에 관한 연구 : 곡교천을 사례로 Case Study for Goggyochun

조해용 선문대학교 ·중소기업기술지원연구소 1999 선문공대 연구/기술 논문집 Vol.4 No.1

본 연구는 곡교천 주변 식물들의 분포구조를 조사하고 식물분포와 환경요인과의 상호관계를 조사하였다 1998년 8월부터 10월까지 총 11개 조사지점을 곡교천을 따라 선정하여 식물분포구조와 토양환경요인들을 결정하였다 습지식물들이 44종으로 구성되었다 조사지점에서 가장 빈번하게 채취된 종들은 미국개기장, 소리쟁이, 쑥, 환삼덩굴 그리고 바램이였다 그 중 큰개여뀌와 환삼덩굴종이 군집내에서 우점종으로 나타났다 토양분석결과 유기물의 함량과 점토의 성분이 상류지역에서 높고 반면 모래의 성분은 하류지역에서 높게 나타났다 This study was conducted to investigate the distribution pattern of plants on streamside of Goggyochun, and to determine the relationships between plant distribution and environmental factors A total of 1 1 survey sites were selected along the Goggyochun during the period of between August and October 1998, and vegetation distribution pattern and soil environmental factors were determined The wet land plants were composed of 44 species The most frequently occurring species in the study sites were Panicum dichotomiflorum, Rumex crispus, Arternisia princeps var orientalis, Humulus japonicus and Digitaria sarguimalis, and among them the persicaria nodosa and Humlus japonicus species were dominants of the community. Analysis of soil properties showed that organic matter and clay content were higher in the upstream region while sand content was higher in the downstream region.

하천변 식생의 식물사회학적 연구

조해용 선문대학교ㆍ중소기업기술지원연구소 2000 선문공대 연구/기술 논문집 Vol.5 No.1

곡교천의 9개지점을 1999년 4월부터 7월까지 수생 및 습생관속식물의 종조성, 분포 및 식물군락의 구조를 조사하였다. 조사지역에 분포하는 수생식물은 27과 68속 83종 14변종 1아종 2품종이었다. 조사지점에서 가장 빈번하게 채취된 종들은 미국개기장, 소리쟁이, 쑥, 환삼덩굴 그리고 바랭이였다. 그 중 큰개여뀌와 환삼덩굴이 군집네에서 우점종으로 나타났다. 군집의 종다양성도지수는 0.806-1.148이고, E지점이 가장 높았다. 균등도는 0.504-0.841이고. 군집유사도지수는 0.181-0.800으로 나타났으며, E지점과 G지점과의 상관관계에서 가장 높았다. The flora, vegetation structure, distribution of the vascular hydrophytes and hygrophytes were investigated in the nine sites of Goggyochun from April to July in 1999. The flore was composed of 27 families, 68 genera, 83 species, 1 subspecies, 14 varieties and 2 forms. The most frequently ocurring species in the study sites were Panicum dichotomiflorum, ??umex crispus, Arternisia princeps var. orientalis, Humulus japonicus and Digitaria sarguimalis, and among them the ??ersicaria nodosa and Humlus japonicus species were dominants of the communitγ. The ranges of species diversity indices (H') were 0.806-1.148. It was highest in the site E which was the disturbed area. The ranges of equitabilitγ were .504-0.841. The ranges of community similarity indices (CC_s) were 0.181-0.800 among the nine sites, and hiBhest between ite E and site G.

상가건물임대차보호법의 문제점

조명래,서해용 건국대학교 사회정책연구소 2003 사회과학연구 Vol.16 No.-

무한천과 곡교천의 식생 구조와 관리에 관한 연구

조해용 선문대학교 1998 공과대학논문집 Vol.1 No.1

하천개발이 하천의 생태계에 미치는 영향을 알아보기 위해 무한천과 곡교천의 식생구조와 관리를 조사 하였다. 무한천은 건강한 생태계를 유지하고 있어, 하천에서 각종 휴양활동을 하기에 충분했다. 그 이유는 습지 식물이 지천으로부터 영양분을 흡수하여 하천의 생태계를 건강하게 보존토록 하기 때문이다. 습지식물은 상류로부터 하류로 갈수록 증가하며, 상류에는 수많은 수목과 습지식물이 나타난다. 그러나 하천의 개발지역인 중류에 는 미국가막사리, 미국개기장과 같은 귀화식물이 우점종을 이룬다. 하천의 생태계를 보존하기 위해서는 하천개발후의 자정작용을 위해 습지식물이 부분적으로 도입되어야 하며, 아울러 지속적인 관리가 요구되어진다. To investigate the impact that the river development effects the river ecosystem, plants ecosystem and structure in Muhanchun and Goggyochun were surveyed. Muhanchun maintains the sound ecosystem. It has sufficient capacity for recreation-activities on the river. The reason is that a hydrophyte absorbs nutrients from the stream and the river ecosystem maintains sound. Number of hydrophyte increase from upstream going forward to downstream. In the upstream various woody plants and hydrophyte appeared. But at midstream, which is the developed area, naturalized plants dominate such as Bidens frondosa, Panicum dichotomiflorum etc. To manage the creek ecologically, hydrophytes should be introduced in partly, for natural purification after rehabilitation of the riverside, and steadily monitoring is demanded.

遺留分算定에 관한 考察

조명래,서해용 건국대학교 사회정책연구소 1999 사회과학연구 Vol.11 No.-

아산시 지역의 토양과 식물체 중 중금속함량에 관한 연구

조해용,김성민 선문대학교 중소기업기술지원연구소 2001 선문공대 연구/기술 논문집 Vol.6 No.1

도시지역 토양의 중금속오염과 그 영향을 파악하는 기포자료를 제공하기 위해 아산지역의 토양과 자생하는 식물체 중에 함유된 Pb, Zn, Cu, Cd, Cr과 토양의 토성, pH 그리고 유기물함량도 조사하였다. 아산지역 11개 지점을 선별하여 1999년 6월에서 9월 사이에 조사하였다. 토양의 유기물과 점토함량은 상류지역에서 높았으며, 반면 모래성분은 하류지역에서 높게 나타났다 토양의 pH와 유기물함량은 각각 6.70-9.94와 2.39-15.16범위에 있었고, 중금속인 Pb과 Cd의 평균치는 각각 11.96ppm과 1.64ppm으로 한국의 토양과 비교하여 약간 높게 나타났다. 여뀌식 물체에 있어서 Zn과 Pb의 평균함량은 각각 8.30ppm과 7.38ppm으로 나타났는데 이는 다른 식물체의 함량보다 높았다. In order to provide the basic information for a full understanding on the heavy metal pollution of cities, the contents of Pb, Zn, Cu, Cd and Cr in soils and plants in Asan city were investigated, and soil texture, pH and organic matter of soils were also investigated. A total of 11 survey sites were selected in Asan areas during the period of between June and September 1999. Analysis of soil properties showed that organic matter and clay contents were higher in the upstream region while sand content was higher in the downstream region. The pH and the organic matter contents of soils were at range of 6.70-9.94 and 2.39-15.16% respectively. The average contents of Pb and Cd in soils were 11.96ppm and 1.64ppm respectively, and these values were higher as compared with those of ordinary soil in Korea. The average contents of Zn and Pb in Persicaria hydropiper were 8.30ppm and 7.38ppm respectively, and these values were higher than other plants.

現代思想과 靑年文化 : 哲學的 敎育學的 思想을 中心으로

趙鏞振,徐海吉 충남대학교 미국학연구소 1976 美國學論文集 Vol.1 No.-

Ⅰ. Cultural situations are classified into several parts : traditional culture and alien culture, pure and popular, main stream and non main stream, and finally youth culture. Among other cultures, we can not overlook youth culture, which is closely related to modern culture and civilization. First of all, we must have good knowledge of the youth culture: what it is, how it is composed on what value it is made, what type of thought pattern the modern youth who live in the current technical civilization have My purpose in this paper is to study these problems from the viewpoint of philosophy and education. Ⅱ. If our life is comparable to a tree, the child period is the period of seed growing, the adolescent period is that of blooming in preparation for bearing fruit, and the senescence period is that of bearing fruit ready to fall. The culture formed during the adolescent period has something to do with the establishment fo the co-ordinates of our life. Culture is chiefly formed by what the adolescents think of and what they do during the adolescent period. Ⅲ. The youth culture has at present a seriously significant task of modern thought and humanism, since their resentment, renunciation, resistance, suspense, despair and delinquency are closely related to the social problems. Very tight problems might arouse without the accurate knowledge of the youth culture. The adolescent period is not the transition period but the period when we can from individual views. Ⅳ. Their resistance, secession, irresponsibility, alienation, egoistic mind, enervation etc. have become a challenge against our traditional culture. Therefore we can not bur relate this youth culture with the social problems. Social agreement and open tendency play a significant role in the formation of the youth culture. By means of research on the relationship between the youth culture and the modern thought, that is, between the youth culture and Pragmatism, Instrumentalism, Operationsim, I have attempted to grasp the true character of the youth culture. Ⅴ. I have analyzed complex factors of the youh culture and examined into J. Deway's educational view in addition to T. Brameld's viewpoint. Dewey pointed out the irrationality of their respective viewpoints between traditional education and progressive education and made both the extreme viewpoints harmonized by means of philosophical methods. It is deemed to be a desirable method to tie and harmonize traditional culture and youth culture. According to Dewey, education is the very cultivation of its ability and education is achieved by forming the habit of "Reflective thought" Therefore the forming of "Reflective thought" means tha we can make the adolescent adapted to circumstance and guide them into the right path. Ⅵ. Brameld's reconstructionism is based on the idea that we can not overcome present crisis by means of progressivism and essentialism, but consolidated theory which was adopted from the advantages of both the ideas. The core of Brame;d's thought is the construction of democratic world culture and the realization of social self. As a means of principle to achieve the above, he took social agreement. The social agreement is made by means of social persuation through communication of individual desire. The youth culture must also be assimilated through this method. It is my conviction that Brameld's theory to construct Utopian world is our ultimate educational goal and thought.

이동 열원을 고려한 전자빔 용접의 유한요소해석

조해용,정석영,김명한,조창용,이제훈,서정 한국레이저가공학회 2001 한국레이저가공학회지 Vol.4 No.1

Simulation on the electron beam welding of Al 2219 alloy was carried out by using commercial FEM code MARC, which encounters moving heat sources. Due to axisymmetry of geometry, a half of the cylinder was simulated. A coupled thermo-mechanical analysis was carried out and subroutine for heat flux was substituted in the program. The material properties such as specific heat, heat transfer coefficient and thermal expansion coefficient were given as a function of temperature and the latent heat associated with a given temperature range is considered. As a result, the proper beam power is 60kVX60mA and welding speed is 1~1.5 m/min. The residual stress in the heat-affected zone as well as the fusion zone does not increase. It is necessary to use jigs for preventing distortion of cylinder and improving weld quality.

인공토양 생산과 인공지반에 이용방안에 관한 연구

조해용,김진용,김성민 선문대학교 ·중소기업기술지원연구소 2002 선문공대 연구/기술 논문집 Vol.7 No.1

인공토양을 생산하기 위해 점토와 톱밥에 첨가제를 사용하여 혼합한 재료는 화로에서 300~400℃로 약 20분 정도 처리하였다. 인공토양이 인공지반에서 토양의 조건으로 적당한가를 조사하기 위해서 인공토양의 물리·화학적 특성을 분석하였다. 인공토양의 입자크기는 직경 1.5~8㎜ 이었고, 점토토양과 펄라이트A와 비교해서 투수성, 총 질소 그리고 총 인이 높았다. 또한 인공지반의 녹화를 위한 경량토로서 펄라이트를 대신 인공토양을 이용하면 경제적인 효과가 기대된다. For the production of artificial soil, a mixture of clay saw dust as additives was formulated, and was thermally treated in the firing kiln at 300-400℃ for about 20minutes. The physico-chemical characteristics of the artificial soil were analyzed, in order to be used as a soil conditions to the artificial ground. The particle sizes of artificial soil were controlled to 1.5~8㎜ in diameter. Artificial soil showed high in permeablility, total nitrogen and total phosphorous concentration compared to the clay soil and perlite. In addition, artificial soil could be a cost-effective substitute for perlite as a light material for greening of artificial ground.

자동차용 컨트롤 링크 업셋 용접부의 용접성 및 피로강도 향상에 관한 유한요소 해석

조해용,권혁홍,이봉규 한국공작기계학회 2001 한국생산제조학회지 Vol.10 No.6

This study is concerned with Finite Element Analysis on welded part of control link for automobile. For analysis, control link was modeled into two parts, ring and rod. Heating condition, temperature distributions and fatigue fracture strength were analyzed using "HEAT Ⅲ" and "ENDURE" module of NISA Ⅱ. Metal flow in the process of welding was simulated by DEFORM^TM 2D. The analyzed results were compared with experimental inspection. Quality of welded part was able to be improved by controlling metal flow in the process of welding by increase the friction constant of ring part. Heat transfer analysis and flow simulations were in good agreement with welding experiments.