• (The)Korea Educational Review
• /
• v.22 no.3
• /
• pp.67-87
• /
• 2016

The paper has tried to analyze the sense of 'meta-praxis' in the educational discourse. Against the dichotomy of theory vs practice, the senses of practice and 'meta-praxis' can be hold under the Greek conception of human activities such as theoria, poiesis and praxis. We can establish the meaning of meta-praxis contrasted with one of metaphysics, not with one of meta-theory. Some significant points included in the concept then have been minutely examined so as to lead us to get the recursive structure and practicability. The Buddhist notion such as 'Well-Rounded Discretion' and the linguistic one such as 'Grand Father' throw light on the educational practice and discourse. These are ones that we never fail to recognize in terms of 'meta-praxis'.

• Proceedings of the Korean Institute of Landscape Architecture Conference
• /
• 2011.03a
• /
• pp.98-101
• /
• 2011

• Journal of Educational Research in Mathematics
• /
• v.18 no.1
• /
• pp.1-24
• /
• 2008

The purpose of this study is to uncover weaknesses in the constructivism in mathematics education and to search for ways to complement these deficiencies. We contemplate the relationship between the capability of construction and the performance of it, with the view of the 'Twofold-Structure of Mind.' From this, it is claimed that the construction of mathematical knowledge should be to experience and reveal the upper layer of Mind, the Reality. Based on the examination on the conflict and relation between the structuralism and the constructivism, with reference to the 'theory of principle' and the 'theory of material force' in Neo-Confucianist theory, it is asserted that the construction of mathematical knowledge must be the construction of the structure of mathematical knowledge. To comprehend the processes involved in the construction of the structure of mathematical knowledge, the epistemology of Michael Polanyi is studied. And also, the theory of mathematization, the historico-genetic principle, and the theory on the levels of mathematical thinking are reinterpreted. Finally, on the basis of the theory of twofold-structure, the roles and attitudes of teachers and students are discussed.

• Proceedings of the Korea Society of Environmental Biology Conference
• /
• 2002.11a
• /
• pp.72-80
• /
• 2002

광양만 지역 수직군집구조는 최상부는 해조류가 거의 분포하지 않으며, 상층 하부부터 Ulva spp.가 우점하고 있으며, 저서동물은 최상부지역에는 따개비류가 우점하며, 하부로 갈수록 Oysters가 우점하였다. 그리고 층별군집구조는 상층부는 Biofilm이, 중ㆍ하층부는 Ulva spp.가 우점하며, 하층부로 갈수록 Turf algae의 밀도가 높다. 따개비류는 상층부와 중층부에서 우점하고 있으며, 중하층부로 갈수록 Oysters가 우점하며 총알고동은 상층부에서 중하부에서는 삿갓조개류의 밀도가 높았다. 남해 서상지역의 수직군집구조는 8월 조사결과 상부는 Brown crustose algae가 중부부터는 지층이, Ulva spp. 등이 하부에서는 유절산호조류, 개서실 등이 우점하였으며, 10월 조사에서 상부에는 해조류가 거의 발견되지 않았으며, 중부이하에서 지층이, 개서실, 유절산호조류 등이 하부에는 가시명불 등이 우점하였다. 저서동물은 말미잘, 삿갓조개류, 고둥류 등이 높이와 관계없이 균일한 밀도를 보였다. 그리고 층별군집구조는 상층부는 지층이, 무절산호조류 등이, 중층부는 개서실, ULva spp. 유절산호조류, 지층이 등이, 하층부는 개서실, 유절산호조류, 가실덤불 등이 우점하였다. 저서동물은 전층에서 따개비류, 말미잘 등이 우점하였다. 상주지역의 수직군집구조는 상부는 해조류가 거의 대부분 분포하지 않으며, 중부는 Biofilm, 우뭇가사리가, 하부에서는 지충이, 패, Brown crustose algae, 무절산호조류, 톳 등이 밀도가 높게 나타났다. 저서동물은 상부에는 총알고둥과 따개비류, 중ㆍ하부는 삿갓조개류, 말미잘이 우점하였다. 그리고 수평군집구조는 Biofilm이 상층부의 일부 지역에서 조사되었으며, 중층부는 Biofilm, Brown crustose algae, 무절산호조류, 패, 지층이 등이 우점하며, 하부는 지충이, 톳, 유절산호조류, 무절산호조류, Brown crustose algae 등이 우점하였다. 저서동물은 상층부는 총알고둥이 중층부는 삿갓조개류, 말미잘, 군부, 해면류가 하층부는 해면류, 삿갓조개류, 말미잘 등이 우점하였다.

• Journal of the Korea institute for structural maintenance and inspection
• /
• v.23 no.5
• /
• pp.96-103
• /
• 2019

Middle-rise reinforced concrete residential buildings account for a large portion of the Korea, and structural performance analysis are needed for problems that could occur during the construction of such buildings. Thus, a middle-rise reinforced concrete residential building with 25 stories are selected as a sample model for structural performance analysis. The structural analyses are performed by dividing a sample model into the construction stage models of the 5th, 10th, 15th, 20th and 25th floors and the completion stage models with the design completed. For the comparisons of structural performances, Eigenvalue analysis results and lateral-load-resisting capabilities and structural design performances of structural members are analyzed. As a result of analyses, it was confirmed that both the construction and completion stage do not exceed KBC criteria limits at the lateral displacement and story drift ratio, and structural design performances of structural members confirm structural safety in all components except for some members of the wall. Therefore, it was concluded that if structural stability is obtained during the completion stage of a middle-rise reinforced concrete residential building, structural stability is secured under construction.

• Journal of the Economic Geographical Society of Korea
• /
• v.13 no.2
• /
• pp.196-218
• /
• 2010

This study is to investigate the development process and the structure of the machine and material industrial clusters in Yeongnam region, Korea. In theoretical analysis, it is proposed that the wide area industrial cluster has three type of development process and a duplicate (or multi-level) spatial structure. We can ascertain from the case study of industrial clusters in Yeongnam region that An wide machine and material industrial cluster has been formed in Yeongnam region and the cluster has the duplicate structure or multi-level structure.

• 건축구조
• /
• v.8 no.3
• /
• pp.46-47
• /
• 2001

최근 20년 이상된 중층아파트 재건축이 규제강화와 용적율 하향조정 등으로 사업이 어렵게 되자 리모델링에 대한 관심이 높아지고 있다. 이 글에서는 지난 5월 7박 8일간으로 다녀온 일본 도쿄와 싱가폴의 아파트 리모델링 공사현장 사례를 소개하고 우리의 현황을 잠시 살펴보고자 한다

• Journal of agriculture & life science
• /
• v.44 no.5
• /
• pp.15-22
• /
• 2010

Vegetation structure and soil condition were analyzed to provide information for effective management of Acer okamotoanum community. Importance value of A. okamotoanum in upper layer was highest as 120.7, and that of Camellia japonica in middle and lower layer was highest as 61.8 and 15.7, while those of A. okamotoanum were 37.5 and 2.6, respectively. Taxus cuspidata var. latifolia which was designated as vulnerable species by Korea National Arboretum began its existence in lower layer. Species diversity and evenness were 0.674 and 0.706 in upper layer, 0.947 and 0.805 in middle layer, and 1.312 and 0.938 in lower layer, respectively. Soil pH of A. okamotoanum community was 5.79. The contents of organic matter, total N, and available $P_2O_5$ were 7.2%, 0.33%, and 51.1ppm, respectively.

• Journal of Korean Society of Forest Science
• /
• v.80 no.4
• /
• pp.393-407
• /
• 1991

The vegetation structure within Chamaecyparis obtusa plantation was analyzed for the purpose of applying the effective forestation method for Chmaecyparis obtusa plantation, tending and regeneration in the southern districts of korea. The results were as follows ; 1. The importance percentage was high in the order of Eurya japonica, Rhus verniciflua, Chamaecyparis obtusa, Lindera erythrocarpa, Carpinus laxiflora, Styrax japonica, Viburnum dilatatum, Zanthoxylum piperitum and Smilax china among the vegetation of Chamaecyparis obtusa. Importance percentage of natural seedling of Chamaecyparis obtusa was high in lower story but gradually decreased in middle story. 2. The basal area of upper trees had a negative correlation with the density of natural seedlings in the middle and lower story, and it represents that the basal area of upper trees had some effect on the density of natural seedlings within understories. 3. The rate of the A and B class by Raunkiaer's frequency was higher in the vegetation of middle story than that of lower story. 4. By Morisita's index, the species of Chamaecyparis obtusa, Rhus verniciflua, Lindera erythrocarpa, Smilax china. Callicarpa japonica and Lindera obtusiloba were randomly distributed at lower story, but they were aggregatively distributed at middle story. At all of middle and lower story, Eurya japonica and Viburum dilatatum were randomly distributed, and Carpinus laxiflora, Zanthoxylum piperitum and Picrasma quassioides were aggregatively distributed. 5. The number of appearance species and the value of species diversity in western survey area were more than that of eastern survey area. 6. The value of species diversity at lower story was higher than that of middle story, and it represents that the number of individuals of appearance species was composed more even at lover story than middle story. 7. According to cluster analysis by similarity index, the survey areas were separated from inland and seacoast districts. 8. Judging from each stories ordination analysis by dissimilarity index, the vegetation was separated from lower and middle story, and the vegetation of lower story was more progressed succession stage than that of middle story. 9. In Chamaecyparis obtusa stands, Eurya japonica had a positive correlation with Sorbus alnifolia, Hex macropoda. Ficus erecta and Trachelospermum asiaticum, but it had a negative correlation with Zanthoxylum piperitum, Carpinus laxiflora and Parthenocissus tricuspidata. 10. In estimation of the productivity of Chamaecyparis obtusa stands, the value of SC (Conic surface) and VP (Parabolic volume) for upper trees was 94.5% and 99.63%, respectively and SC and VP of middle story was 5.49% and 0.37%, respectively. In the species of middle story, material productivity was high in order of Eurya japonica. Lindera eryhrocarpa, Rhus verniciflua. Carpinus laxiflora and Styrax japonica.

• Journal of Korean Association for Spatial Structures
• /
• v.7 no.4
• /
• pp.97-104
• /
• 2007

This paper is concerned with the vibration characteristics of medium-rise building, which severely vibrated by vehicles. The field vibration measurement was employed for finding the vibration source and vibration reducing method. Time domain data from measurements were also utilized for vibration characteristics, such as effect of buses and subways-induced vibration on the floor vibration of the building. effectiveness of the vibration reducing method was also demonstrated.