• Journal of The Korean Association of Information Education
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• v.22 no.1
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• pp.141-149
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• 2018

In order to analyze the educational effects of digital textbooks for elementary students, the 3~4 graded elementary students were selected and designated as panels in 2014 to conduct the longitudinal study. We conducted a questionnaire survey on students who were in grade 5 or 6 in elementary school in 2016 to evaluate their effects on cognitive domain, social domain, social domain, psychomotor domain, and learning competency. As a result, 5th grade students using the digital textbooks for 3 years showed higher educational effectiveness than 6th grade students using the digital textbooks for 2 years. In addition, the use of the digital textbooks for three years has been shown to have improved educational effectiveness in all areas except students' psychomotor domain. These educational effects were higher for students with higher scores, more times using digital textbooks, and higher teachers' smart education capacity.

• Annual Conference of KIPS
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• 2007.05a
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• pp.679-682
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• 2007

살아있는(in-vivo)실험체에서 여러 차례 획득된 영상의 관심영역 특성을 측정, 분석하기 위한 영상처리기법의 정확성은 동물을 희생시켜(in-vitro) 촬영한 영상과의 정량적 비교분석을 통해 검증할 수 있다. 하지만 육안검사에 의존한 기존 분석방법은 객관성이 떨어지는 단점이 있다. 따라서 본 논문에서는 in-vivo영상인 PET 영상과, in-vitro영상인 Autoradiography 영상에서 관심영역 특성을 객관적, 정량적으로 비교하는 방법을 제안한다. 종양을 심은 누드마우스에 방사성 동위원소를 표지하여 획득한 이 두 영상에서 종양 조직 성장 지표가 되는 체적과 조직의 활성도를 나타내는 방사능섭취량(SUV)을 각각 측정하고 이를 비교하였다. 또한 두 영상획득의 시간차에 의해 방사성동위원소가 붕괴되어 영상 전체의 명암도가 감소하게 되므로 시간에 반비례하게 변하는 방사성동위원소의 양을 고려하여 영상명암도를 보정하였다.

• 대한공업교육학회지
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• v.37 no.2
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• pp.21-55
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• 2012

The purpose of this study was to develop teacher-training for improvement of teaching efficacy of technology teacher. The study was carried out through Delphi research method. It was executed for investigating the professional and wide-range opinions of expert panel to examine the validity. The validity was confirmed by concurrence ratio, convergence ratio, contents validity ratio (CVR). Major results of this study were as follows: First, necessity, nature, purpose of teacher-training for improvement of teaching efficacy of technology teacher was set up. And this teacher-training have 12 objectives in 3 domains (cognitive, affective, psychomotor). Second, contents of this teacher-training were designed to be applicable for 10 modules (300 hours). For example, module1 (introduction of technology education), module2 (construction technology), module3 (information communication technology), etc. Third, educational method, training educator, evaluation method of this teacher-training were developed. Fourth, each module of this teacher-training is 30 hours in length. And summer or winter vacation is appropriate for this teacher-training time. Appropriate teacher-training time is six hours a day. Fifth, roles of educational institution for this teacher-training were suggested. Sixth, strategies to vitalize this teacher-training were suggested.

• Journal of Gifted/Talented Education
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• v.19 no.3
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• pp.585-602
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• 2009

The purpose of this study was to compare the 5 OEs of Korean gifted elementary students and non-gifted and to find out the gender difference in gifted and non-gifted to clarify the best predictor of giftedness in gender group. The total subjects of this study were 372 Korean third, fourth, and fifth grade elementary school children. One hundred sixty six children of them belonged to a gifted group, and 206 were non-gifted group. Two hundreds one out of 372 subjects were boys and 171 were girls. The Overexcitability Questionnaire II(OEQII) used in this study was developed by Falk, Lind, Miller, Piechowski, & Silverman in 1999. The OEQ II is consisted of 50 Likert-type items, classified into five subscale: psychomotor, sensual, imaginational, intellectual, and emotional. And it was translated into Korean. It was administered in group sessions during the winter of 2008. Data were analyzed with SPSSWin 12.0. MANOVA was conducted to determine statistical differences by giftedness and by gender. The results revealed that the level of 5 OEs of gifted elementary children was higher than non-gifted(normal) children. The intellectual OE showed the most powerful explanation among the 5 forms of OEs. This study also found the gender difference within the gifted group as well as with the whole subjects. The mean scores of sensual, imaginational and emotional OEs were higher in girls than in boys. Based on the gender difference within the gifted group and the whole group, it is assumed that imaginational OE may be the best predictor of gifted girls among school-age children.

• Korean Journal of Biological Psychiatry
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• v.3 no.2
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• pp.203-210
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• 1996

Objects : To investigate the relationship between the age of onset with the atrophy and the white matter hyperintensities observed in the brain MRI of Alzheimer patients. Methods : The authors measured volumetrically cortical and ventricular brain atrophy and rated semiquantitatively white matter signal hyperintensities in nine presenile and 18 senile Alzheimer patients, who were matched for dementia severity, according to NINCDS-ADRDA criteria and in age-matched 10 presenile and 11 senile control subjects. Results : Presenile Alzheimer patients showed significantly greater cortical and ventricular atrophy indices(p<0.05) but no difference in white matter hyperintensity scores compared to the age-matched control group. On the contrary, senile Alzheimer patients showed significantly greater white matter hyperintensity scores(p<0.05) but no difference in cortical and ventricular atrophy indices compared to the age-matched control group. Conclusion : An earlier onset was related to marked brain atrophy with less white matter lesions and a later onset is related to marked white matter lesions with less brain atrophy in Alzheimer's disease. Our results suggested the passible difference in the pathophysiology between the presenile and the senile-onset Alzheimer's disease.

• Journal of Gifted/Talented Education
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• v.21 no.3
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• pp.741-760
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• 2011

The purpose of this study was to compare the 5 OEs of Korean gifted elementary and middle school students and non-gifted, and to find out the gender differences and level of school differences to clarify the possibility of identification instrument of giftedness based on the 5 OEs as the affective factor of giftedness. Total subjects were 270 in this study. Among them, gifted group were 74, and non-gifted group were 196. Boys were 202, and girls were 168. Elementary students were 34, middle school students were 40 within the gifted group. OEQII (Kim, 2008) were modified and used for elementary students. The result of this study were as follows. First, the level of 5 OEs of gifted students was significantly higher than non-gifted students. Second, gender differences were found. Total OEs and sensory OE and emotional OE of girls were significantly higher than boys'. Third, there were significant interaction effects among gifted and non-gifted and gender factor in total OEs and psychomotor OE and sensory OE. Fourth, there was no significantly differences of 5 OEs between elementary and middle school gifted students, which may be interpreted that OEs were consistent affective factors of giftedness. OEs were discussed as the possibility of identification instrument of giftedness.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.28 no.4
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• pp.14-27
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• 2010

This study is aimed at understanding the wisdom of our ancestors in Korean traditional villages and finding out cues to designate and utilize community space in planning residential area in villages by examining community space in Korean traditional villages from cultural landscape point of view. This study designated 18 Korean traditional villages which have been preserving Korean traditional culture up to now, so deserve conservation from historical, cultural and artistic viewpoint. This study divided community spaces in each village into social area and ritual area depending on their uses and functions based on the results of pilot study and main study. In addition, ritual areas were also divided into Confucian ritual area and ethnic ritual area. Specifically, this study examined characteristics of space location and users by understanding the location of community space factors in the 18 villages. As for the factor analysis of community spaces, community factors established after the modern age were examined from modern viewpoint, and factors which had been destroyed or lost their original functions were examined from retrospective viewpoint. In conclusion, this study found out that cultural landscape in Korean traditional villages were affected by social relationship among villagers. The community spaces of villagers were multiple-function space rather than a space which was exclusively used by a specific class. Though the occupation of these spaces was separated and differentiated depending on sexes and ages, villagers tried to understand and respect each other through tacit communication.

• Journal of Korean Elementary Science Education
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• v.24 no.1
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• pp.86-101
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• 2005

In this study, a brain-basrd model for science teaching and learning was developed based on the natural processes which human acquire knowledge about a natural object or on event, the major domains of science educational objectives of the national curriculum, and the human brain's organizational patterns and functions. In the model, each educational objective domain is related to the brain regions as follows: The affective domain is related to the limbic system, especially amygdala of human brain which is involved in emotions, the psychomotor domain is related to the occipital lobes of human brain which perform visual processing, temporal lobes which perform functions of language generating and understandng, and parietal lobes which receive and process sensory information and execute motor activities of body, and the cognitive domain is related to the frontal and prefrontal lobes which are involved in think-ing, planning, judging, and problem solving. The model is a kind of procedural model which proceed fiom affective domain to psychomotor domain, and to cognitive domain of science educational objective system, and emphasize the order of each step and authentic assessment at each step. The model has both properties of circularity and network of activities. At classrooms, the model can be used as various forms according to subjects and student characteristics. STS themes can be appropriately covered by the model.

• Journal of the Korean Association of Geographic Information Studies
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• v.17 no.4
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• pp.40-51
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• 2014

This study aims to investigate urban inundation considering building footprints based on dual-drainage scheme. For this purpose, LiDAR data is cultivated to generate two original data set in terms of DEM with $1{\times}1$ meter and building layer of the study drainage area in Seoul and then the building layer is overlapped as vector polygon with the mesh data with the same size as DEM. Then, terrain data for modeling were re-sampled to reduce resolution as $10{\times}10$ meters. As results, the simulated depth without considering building footprints has a tendency to underestimate the inundation depth compared to observed data analized by CCTV imagery. Otherwise, the simulation result considering building footprints revealed definitely higher fitness. The difference of inundation depth came from the variation of inundation volume which was relevant to inundation extent. If the building footprints are enlarged, the possible inundation depth is increased, which results in being inundation depth higher because hydrological conditions such as rainfall depth are conservational. Otherwise, according to comparison of inundation extents, there were no significant difference but the case of considering building footprint was revealed slightly higher fitness. Thus, it is concluded that the considering building footprint for inundation analysis of urban watershed should be required to improve simulation accuracy synthetically.

• Proceedings of the Korean Nuclear Society Conference
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• 1998.05a
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• pp.603-608
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• 1998

유체내의 물체 주위에서 유동박리로 인해 생성되는 와류쉐딩은 열전달이나 물질전달을 촉진시키는 이점이 있으나, 항력을 증가시키거나 유동 및 온도의 요동에 의해 구조물을 손상시키는 단점이 있다. 특히 물체와 주위 유동 사이에 공진이 일어나면 항력값이 증가하면서 항력과 양력의 진폭이 급격히 증가하여 물체에 심각한 손상을 초래할 수 있다. 본 연구에서는 레이놀즈수 200 이하의 층류유동에서 공진시 물체 주위의 유동현상과 이로 인한 양력과 항력의 변화들을 수치해석방법을 통하여 분석하였다 수치해석은 일반좌표계에서 유한체적법을 적용하여 Navier-Stokes 방정식을 차분화하였다. 이때 방정식의 종속변수로는 공변속도를 채택하였으며, 이산화된 방정식은 분리단계법을 이용하여 수치해를 구하였다. 입구유속의 강제진동에 의한 사각실린더 주위의 와류쉐딩시 공진이 발생하는 강제진동수의 범위는 원통실린더의 경우와 유사하였으나 상대적으로 폭이 더 좁았다 그리고 공진이 발생하는 강제진동수의 범위는 진폭이 증가할수록 증가하였다. 쉐딩 진동수가 일정하면서 입구유속의 진폭이 증가하면 이에 비례하여 실린더 주위의 유속이 상대적으로 증가하게 되어 와도가 강해지면서 입추유속 진폭에 비례하여 항력의 평균값 뿐 아니라 항력과 양력의 진폭도 증가하였다. 그리고 실린더 뒷면의 와류 생성영역은 진폭에 비례하여 감소하였다. 진폭의 변화에 따라 상변화가 서로 상이한 것은 실린더 뒤쪽의 와류들이 상하면의 합력차이를 변화시켰고 이것이 진폭변화에 따라 상변화를 상이하게 나타나게 한 원인으로 진폭이 클수록 실린더 뒤쪽에서 압력변화가 심하게 변하면서 실린더 앞쪽까지 더 많은 영향을 미쳤기 때문이다.선원의 사용자에게 제공되는 최종방사능을 평가하는데 유용하게 사용될 수 있다.r의 분포를 보였다.cting the effect of earthquake on structures. This paper is based on the presented paper at the Bertero Symposium held in January 31an4 February 1 at Berkeley, California, USA which was entitled "Needs to Evaluate Real Seismic Performance of Buildings-Lessons from 1995 Hyogoken-Nambu Earthquake-". The lessons for buildings from the damage due to the Hyogoken-Nambu Earthquake are necessity to develop more rational seismic design codes based upon a performance-based design concept, and to evaluate seismic performance of existing buildings. In my keynote lecture at the Korean Association for Computational Structural Engineering, the history of seismic design and use of structural analysis in Japan, the lessons for buildings from the Hyogoken-Nambu Earthquake, the