• Journal of Korean Tunnelling and Underground Space Association
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• v.5 no.3
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• pp.279-289
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• 2003

In karst formation area, the tunnel support system is an important factor for the tunnel safety during operation. It is also not easy to determine the tunnel supporting system in the design stage. Therefore, it is necessary to standardize the tunnel supporting system in uncertain ground condition. This paper presents the standardization of the tunnel supporting systems to be adopt in karst formation. For the tunnel planned in the project area, karst features and the expected scenarios in the tunnel area were developed based on the results of the geological and geotechnical assessment. In order to provide specific supporting system and construction details for a wide range of possible karst features, the generalized typical support systems are developed according to the classification of karst features. In addition, the initial support systems and construction sequence for each karst feature are also presented in this paper.

• 한국지구물리탐사학회:학술대회논문집
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• 2008.10a
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• pp.167-172
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• 2008

A microgravity survey was applied for detecting and mapping karstic cavities over limestone area at Gaeun. The gravity data were collected at about 1, 100 stations by 4 m interval. The density distribution beneath the profiles was drawn by two dimensional inversion based on the minimum support stabilizing functional, which generated better focused images of density discontinuities. We also imaged three dimensional density distribution by growing body inversion. The density image showed that the cavities were dissolved, enlarged and connected into a cavity network system.

• The Journal of the Korea Contents Association
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• v.19 no.6
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• pp.575-586
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• 2019

In order to find out perception of group home for the people with disabilities worker on sexual behavior of adults with developmental disabilities in a holistic way, This study conducted in-depth interviews with six research participants using Giorgi's phenomenological study method to understand the meaning of perception of sexual behavior of adults with developmental disabilities. According to data analysis, these experiences appeared as two thematic themes: 'sexual trouble behavior' and 'perception of sexuality'. Two sub-themes of 'Excessive expression of sexual desire', 'Improper sexual behavior that can lead to sexual offenses' were derived from the essence theme of 'sexually problematic behavior' and 'perception of sexuality' were derived from the essence theme of 'lack of suitable solution', 'conditions that are not enough to have sex appeal', 'frustrated sexuality', 'some dilemma problem', 'sexuality that is not different from non-disabled', and 'love and sex are ok, pregnancy and marriage are no'. Based on this, group home caregivers contribute to their role as the main agents who reinforce and reproduce the sexual norms of adults with intellectual disabilities, while at the same time they experience confusion in their values about sexual norms of people with intellectual disabilities. Based on the results, We discusses the major intervention plan for education programs to enhance the competences of group home caregivers in order to form a holistic perspective of group home caregivers in sexuality of people with intellectual disabilities, and provide rational solutions.

• Journal of the Speleological Society of Korea
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• no.44
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• pp.3-16
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• 1995

동굴에는 석회동굴 그밖에 용암굴과 파식굴 등으로 구별되는데 그 대부분은 석회동굴이다. 석회동굴인 경우 이의 생성과정과 그 특성을 보면 다음과 같다. 지표면에 내린 빗물은 땅속에 스며들어가 지하수류를 이루어 투수층을 따라 흘러 빠져 들어간다. 이때 이 공동이 동굴이 되는데 공동의 천정면에서 떨어지는 물방울이 그 위 지층에서 석회암층을 스며 내릴 때에는 석회질이 용해된 물방울이 공동천정에서 고드름 모양으로 종유석을 발달시키거나 또는 공동바닥에 떨어져 석순을 성장시킨다. 이것이 석회동굴이다.(중략)

• Korean Journal of Animal Reproduction
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• v.20 no.3
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• pp.279-288
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• 1996

The objective of this study was to determine the effect of EGF on the development of IVM/IVF bovine embryos and their ICM and TE cell number. In addition, we examined the combined effect of EGF and coculture to the bovine embryo development and the expression of EGF-R protein on bovine embryos by indirect immunofluorescence. The results obtained in these experiments were summarized as follows: When the IVM/IVF 4- to 8-cell embryos were treated at 0, 1, 10, 100 ng/ml of EGF, EGF treatment group showed improved development to blastocyst and increased pattern of ICM and TE cell number compared with control, although there is not significantly different. The stimulating effect of EGF (10 ng/ml) to the develop ment level of IVM/IVF bovine embryos significantly increased development rate to blastocyst after 8-cell stage (p<0.05), although there is no significant effect to the increase of ICM and TE cell numbers. Also, expression of EGF-R on the bovine embryonic stage by indirect immunofluor escence presents after 4-cell stage and the intensity of the EGF-R staining was variable with the development progression. On the other hand, embryos cultured in coculture group added either with or without EGF commonly indicated the significant difference in development rate to blastocyst and Total cell number compared with control. These results suggest that the a addition of EGF to the coculture may stimulate the coculture effect between IVM/IVF bovineembryos and cumulus cells. Therefore, EGF could promote preimplantation bovine embryo development by binding with expressed EGF~R after 4-cell stage, and stimulate the production of embryotrophic factors from the coculture environment. Also, the present study showed that there was no significant effect of EGF to the increase of ICM and TE cell number although the rate of blastocyst significantly increased when treated with EGF after 8-cell stage (p<0.05).

• 한국정보교육학회:학술대회논문집
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• 2004.08a
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• pp.171-178
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• 2004

현대사회는 산업사회의 발달에 따른 물질 만능주의로 인해 이기적이고 배타적인 사회풍조가 사회 전반으로 점차 확산되면서 전통적 가치관이 경시되고 공동체 의식이 퇴색되어 가고 있는 실정이다. 그러나 인터넷의 발달은 시공간을 초월하여 가정과 학교가 가상의 공간에서 정보의 공유와 상호작용을 할 수 있게 해 줌으로써 웹을 활용한 인성교육이 가능해졌다. 본 논문에서는 이러한 웹의 특성을 활용하여 학습자가 다양한 체험활동 중심의 인성교육을 마을 단위로 실천하도록 한 후 웹 상에 구축된 인성교육 시스템을 이용하여 자신이 체득했던 체험활동 정보를 서로 공유하고 학생, 교사, 학부모가 상호 작용하게 함으로써 학습자가 지속적으로 인성 교육에 관심과 흥미를 갖고 참여할 수 있도록 하는 공동체 의식 함양을 위한 인성교육 시스템을 설계하였다. 더 나아가 웹기반 인성교육 시스템을 통해 마을을 사랑하는 마음과 공동체 의식을 함양하여 마을에 대한 긍지와 자부심을 갖고 상부상조하는 전통을 가꾸어 나가는데 도움을 주고자 한다.

• Communications of Mathematical Education
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• v.34 no.4
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• pp.439-464
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• 2020

This study conducted a systematic review of mathematics teacher learning communities, especially the characteristics of teacher collaboration in community activities. Our review includes 14 research papers published in national academic journals indexed in KCI and 24 research papers in international academic journals indexed in SSCI from 2003 to 2019. Results show that the literature varied in research design, research topics, and patterns relating to teacher collaboration. While both international and national papers report teacher community activities concerning the organization, management, and participation, there were different levels of involvement, visions, and activities across the communities of practice. For example, research in national journals has presented teacher community as professional development while papers in international journals have focused on documenting teacher community becoming a reflective community of practice. This study contributes to understanding the interplay of context, conflicting epistemic culture, and professional agency in fostering collaboration in teacher communities. This paper also discusses relevant research methods to investigate mathematics teacher communities and insights into the policy and practice of mathematics teacher education.

• Clinical and Experimental Reproductive Medicine
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• v.24 no.1
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• pp.43-49
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• 1997

The objective of this study is to determine developmental pattern and cell allocation to the ICM and TE in haploid and diploid of embryos following parthenogenetic activation and in vitro fertilization. The incidence of development to blastocyst was lower in the combined treatments of ethanol stimulation and cytochalasin B as compared to the control. However, the combined ethanol stimulation and cytochalasin B treatment (diploid) accelerated development to the blastocyst as compared to the ethanol treatment alone (haploid). Significantly reduction in the average number of total cells and ICM was observed in the parthenotes alone as compared to fetilized embryos, but those of combined ethanol stimulation and cytochalasin B treatment embryos were significantly increased as compared to ethanol alone embryos. These results suggested that the ploidy affects preimplantation developmental patters and cell allocation to the ICM and TE in the porcine.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10c
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• pp.240-242
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• 1998

컴퓨팅 환경의 발달과 컴퓨터 통신의 대중화에 따라서 공동 작업 환경에 대한 관심이 증가하고 있으며, 공동 저작에 관한 연구가 활발히 진행중이다. 특히 공동 작업 환경에서 사용자간의 상호 작용에서 나타나는 충돌의 해결은 필수적이다. 그러나, 그 동안의 충동에 관한 연구들은 모두 일반적인 공동작업에서의 해결 방법에 국한되어 있으며, 이러한 방식들은, 공동 작업 환경에서 설계/저작 단계에 직접 도입되기 위해서는 저작물의 형태와 특성에 맞게 변경되어야 한다. 본 연구에서는 공동 작업 환경에서 저작물의 구조를 설계하는 단계에서 고려해야 할 사용자들 간의 충돌의 유형을 정의하고 이를 해결할 수 있는 방안을 제시하였다. 이를 통해서 공동 작업 환경에서 공동 저작 시 모든 저작자들의 의견을 반영하는 형태의 저작물을 생성할 수 있으며, 저작물을 사용하는 사용자들에게 사용자의 상황과 특성을 고려한 저작물의 제공을 가능하게 하기 위한 방법을 제시하였다.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2006.11a
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• pp.21-24
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• 2006

공동 현상은 난류와 이상 유동으로 인해 그 해석에 어려움이 따르게 된다. 따라서 본 연구에서는 Pressure based 알고리즘을 이상 유동 포착 기법 중, volume fraction모델에 Kunz의 공동 현상 모델을 이용, 공동 현상을 해석할 수 있는 코드를 개발하였다. 이를 통해 2차원의 수중익 주위의 정상유동 해석을 통하여 수중익 주위의 압력 분포를 비교, 코드의 검증을 마쳤다. 또한 2차원 수중익 주위의 비정상 해석을 통해 재진입 영역의 발달에 따른 공동의 생성 및 붕괴를 모사하여 실험 결과와 비교하였다.