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연구논문 : 과학영재교육 관련 정보센터 구축에 대한 과학영재, 학부모, 전문가의 인식과 요구
김경대 ( Kyoung Dae Kim ),이효녕 ( Hyo Nyong Lee ),이순주 ( Soon Ju Lee ),오희진 ( Hee Jin Oh ) 경북대학교 과학교육연구소 2011 科學敎育硏究誌 Vol.35 No.1
이 연구의 목적은 영재교육의 참여 주체인 과학영재학생, 학부모, 전문가(교사)의 과학영재교육 정보센터 설치에 대한 관점 및 요구를 조사하는 것이다. 전국대학교 부설 과학영재교육원과 과학 고등학교를 대상으로 과학영재교육에 참여하고 있는 전문가(교사) 113명, 학부모 194명, 재학생 343명이 참여하였다. 대상별로 개발된 설문지를 통해 조사한 결과, 연구대상별로 선호하는 정보 및 방문하는 홈페이지가 다르게 나타났다. 과학영재교육 정보센터의 필요성을 묻는 문항에 대상에 따른 차이 없이 전부 긍정적으로 인식하였다. 연구의 결과, 대상에 따라 정보의 이용실태와 요구가 약간씩 다르게 나타나는 것으로 조사되었다. 이 연구의 결과는 과학영재교육을 위한 정보센터 구축에 기초자료를 제공하며, 과학영재교육의 개선을 위해 가치 있는 정보를 제공할 것으로 기대한다. This study investigated the utilizations and needs of the gifted students, parents and experts as to the development of the Information Center for Gifted Education in Science (IC-GES). The participants of this study were 343 gifted students, 194 parents raising gifted students in science, and 113 experts in gifted science education. The survey instrument was developed to examine their perspectives and needs. The results of this study revealed that the gifted students, their parents, and experts showed the diverse utilizations and needs. The gifted students showed the more interest in information on the recruitment of gifted students. On the other hand, parents and experts were interested in gifted education programs and curriculum. They exploited various resources to find out the information on science gifted education. In addition, with respect to the development of the IC-GES, all of the participants of this study indicated that they needed the resource center providing the information regarding gifted science education programs. They also noted that the IC-GES could be a crucial foundation as well as essential reinforcement for gifted science education. This study provides and supports the rationale and needs of the development of IC-GES.
김경대,임헌영,박종오,홍예선,김병규,Kim, Kyoung-Dae,Lim, Hun-Young,Park, Jong-Oh,Hong, Yeh-Sun,Kim, Byung-Kyu 대한기계학회 2002 大韓機械學會論文集A Vol.26 No.7
In recent years, the pathology in the colon grows up annually since people of all ages prefer to have less fiber and more fat food. Therefore, the colonoscopy is generalized in developed countries. But it requires much time to acquire a dexterous skill to perform an operation and the procedure is painful to the patient. Therefore, some studies on the development of autonomous colonoscope are carried out. In this paper, we propose a new and simple locomotive mechanism that can be propelled by elliptic motion of a leg. It has several legs that have constant phase difference each other and those legs are disposed along the upper and lower of the body. In order to evaluate the performance of locomotive mechanism, we carried out the simulations of moving characteristics and the experiments in the colon of a dead pig.
조골세포에서 Aggregatibacter actinomycetemcomitans 생균의 파골세포분화유도 cytokine 발현 유도능 및 침투능
최호길,이양신,김민영,김경대,차정헌,유윤정,Choi, Ho-Kil,Lee, Yang-Sin,Kim, Min-Young,Kim, Kyoung-Dae,Cha, Jeong-Heon,Yoo, Yun-Jung 대한치주과학회 2007 Journal of Periodontal & Implant Science Vol.37 No.3
Osteoblasts regulate osteoclastogenesis by production of various cytokines. Aggregatibacter(A) ac-tinomycetemcomitans is one of periodontopathogens which invades gingival tissue. Therefore, clarifying the effect of alive A. actinomycetemcomitans on osteoblasts is important to understand the mechanism of alveolar bone resorption in periodontitis. We investigated induction of osteoclastogenesis-inducing cytokines, adherence, and invasion by A. actinomycetemcomitans in osteoblasts. Osteoblasts were isolated from mouse calvaria and expression of cytokines was determined by RT-PCR. When the ratio of the number of A. actinomycetemcomtians to the number of osteoblasts was 10:1, 50:1 and 100:1, RANKL mRNA expression was increased. A. actinomycetemcomitans also increased expression of macrophage inflammatory protein (MIP) -1${\alpha}$, interleukin (IL)-1${\beta}$, and tumor necrosis factor (TNF)-${\alpha}$. A. actinomycetemcomitans attached to and invaded osteoblasts at ratio of 1000:1. These results suggest that A. actinomycetemcomitans increases osteoclastogenesis-inducing ability of osteoblasts by stimulating the expression of RANKL, MIP-1${\alpha}$,IL-1${\beta}$, and TNF-${\alpha}$ and that invasion of A. actinomycetemcomitans provides a means by which the bacteria escape from immune system and antibiotic therapy.