• Journal of Gifted/Talented Education
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• v.24 no.1
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• pp.45-61
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• 2014

In this study, the meta-analysis technique was applied to investigate the effectiveness of gifted education in non-cognitive areas. Studies conducted during the years from 2002 to 2012 were searched and then the outcomes from the 18 studies were used for meta-analysis. The statistically positive effects were in the leadership programs (the combined effect size=1.226, p<.001), in the career programs (the combined effect size=1.103, p<.001), in the programs related to social skills (the combined effect size=1.684, p<.001), in the programs for gifted students who show underachievement (the combined effect size=1.486, p<.001), and in the bibliotherapy programs (the combined effect size=0.613, p<.001) for the gifted. Implications of the study were discussed in depth based on the results.

• Proceedings of the Korean Society for Information Management Conference
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• 2006.08a
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• pp.127-134
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• 2006

이 연구에서는 국내 인지과학 분야의 연구자 소속 정보와 논문의 표제어 분석을 통해 학제적 구조 파악을 시도해 보았다. 연구 결과 국내 인지과학 분야에서 대표되는 학문 영역은 컴퓨터과학, 심리학, 언어학, 인지과학, 철학, 교육학, 의학, 경영학이었다. 두 시기(1기: 1989-1998, 2기: 1999-2003)로 구분하여 분석한 결과 국내 인지과학 분야는 1기에서는 컴퓨터과학, 심리학, 언어학 순으로 우세한 학문분야가 나타났다. 이와 달리 2기에서는 심리학, 컴퓨터과학, 인지과학, 언어학의 순이었다. 이 같은 결과는 컴퓨터과학의 비중이 초기에 가장 높다가 감소했다는 점에서 외국의 사례와 유사하지만, 외국에 비해서 언어학 분야 연구자의 비중이 다소 높은 것이 국내 인지과학 연구의 특징인 것으로 나타났다. 연구자가 사용한 표제어를 분석한 결과 두 시기에서 모두 컴퓨터과학과 심리학은 인지과학분야에서 융합되기 보다는 독자적인 연구영역을 형성하였다. 또한 시기별 표제어 분석을 통해서 컴퓨터과학이나 심리학 소속 인지과학 연구자들의 관심사가 1기에서 2기로 넘어가면서 변화한 부분을 확인할 수 있었다.

• School Mathematics
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• v.16 no.2
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• pp.387-407
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• 2014

Gender differences have been given major attention in mathematics education in the context of pursuing gender equity in instructional and learning environment. It had been traditional belief that male students would outperform female students in mathematics, especially in the areas as geometry. This belief has been given doubts by cumulated empirical evidences that gender differences are gradually diminishing or even reversing its direction as time goes on. In this study, gender differences in geometry were explored using TIMSS 8th grade mathematics data administered in TIMSS 2003, 2007, and 2011, based on a cognitive diagnostic modeling(CDM) approach. Among various CDM models, the Fusion model was employed. The Fusion model has advantages over other CDM models in that it provides more detailed information about gender differences at the attribute level as well as item level and more mathematically tractable. The findings of this study show that Attribute 3(Three-dimensional Geometric Shapes) revealed statistically significant gender differences favoring male students in TIMSS 2003 and 2007, but did not show significant differences in TIMSS 2011, which provides an additional empirical evidence supporting the recent observation that gender gap is narrowing. In addition to the general trends in gender differences in geometry, this study also provided affluent information such as gender differences in attribute mastery profiles and gender differences in relative contributions of each attribute in solving a particular item. Based on the findings of the CDM approach exploring gender differences, instructional implications in geometry education are discussed.

• Journal of Korea Multimedia Society
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• v.14 no.11
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• pp.1365-1372
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• 2011

This paper proposes a cognitive contrast enhancement algorithm based on the non-linear masking to advance low cognitive contrast in dark regions of images. In order to improve brightness in dark regions of an image, we propose a new contrast enhancement algorithm based on the non-linear masking using regional adaptive parameters of an image. For performance evaluation of the proposed method, chromaticity and saturation comparison as a quantitative assessment and z-score comparison as a qualitative assessment were executed between test images and their simulated images by SSR, MSR, a conventional non-linear masking and the proposed method, respectively. As a result, the proposed method showed low chromaticity and saturation difference and improved cognitive contrast for the three methods.

• Annual Conference on Human and Language Technology
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• 2004.10d
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• pp.319-322
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• 2004

한글은 알파벳 문자처럼 소리를 바탕으로 한 표음문자이지만, 각 글자의 형태는 표의문자인 한자와 유사한 시각적인 효과를 제공한다. 본 연구에서는 자기공명 영상법을 이용하여 한국인이 한글문자와 그림을 인지할 경우 나타나는 신경망적 특성을 알아보았다. 그 결과. 한글과 그림 자극에 대하여 양반구 모두에서 후측두엽 부위의 활성화가 나타났다. 그러나, 전두엽과 측두엽 부분의 활성화는 오직 한글자극의 경우에만 관찰되었다. 좌반구 중전 두엽의 활성화는 음성 및 의미론적 처리와 관련되어 있다고 볼 수 있으며, 우반구 anterior cingulate 활성화는 언어 및 소리의 형성과 관계가 있다고 할 수 있다. 본 연구에서는 우반구 medial frontal 영역인 BA 8의 활성화가 관찰되었다 이 영역은 시각적으로 고차적인 비음성적 자극을 통제하거나 그와 유사한 시각공간적인 정보의 분석과 관련이 있다고 알려져 있다. 본 연구의 결과는 한글의 특성적인 형태가 특정 영역을 활성화시킨 것을 시사한다.

• Journal of Educational Research in Mathematics
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• v.25 no.3
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• pp.303-321
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• 2015

This research purposes to find out the mathematical cognitive characteristics of Korean students and compare it with that of TIMSS 2011 high-achieving countries based on the Cognitive Diagnostic Theory. Based on framework and questions of TIMSS 2011, we select cognitive attributes. Using the data of 8th grade students' mathematical achievement in TIMSS 2011, we compare and analyze the top 15-countries students' cognitive traits. As a result, cognition domain of TIMSS 2011 is reclassified as 9 cognitive attributes. we could distinguish between easy attributes and difficult attributes that students in each country relatively think. Especially, Students of Korea relatively think Recall/Recognize, Compute, Classify/Measure and Represent are easy. On the other hand, relatively they have difficulties in Retrieve, Implement, and Generalize. Based on this research result, It is necessary to establish an educational measures for each attributes which students have difficulties.

• Journal of the Korean Geographical Society
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• v.36 no.2
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• pp.161-176
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• 2001

This study is to find a theoretical basis for the effective teaching-learning of the geographical concept through comparing two cognitive pshychological perspectives: Piaget's cognitive development stage theory and Vygotsky's theory with higher mectal function and zone of proximal development(ZPD). Piaget't theory of cognitive development stage has been empirically proved in the spatial concept development and provided a basis for geographical educational psychology. In spite of this contribution, it has its own limitation in that students cannot learn cocepts beyond their cognitive development stage. On the other hand, Vygotsky supposed that concept development has been done by teaching-learning. This study suggests that Vygotsky's theory gives more comprehensive thoretical basis for its effective teaching-learning about the geographical concept development.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.12 no.1
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• pp.75-81
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• 2012

Road identification is the important task for extracting a road region from the high-resolution satellite images, when the road candidates is extracted by the pre-processing tasks using a binarization, noise removal, and color processing. Therefore, we propose a noble approach for identifying a road using the orientation-selective spatial filters, which is motivated by a computational model of neuron cells found in the primary visual cortex. In our approach, after the neuron cell typed spatial filters is applied to the isolated connected-labeling road candidate regions, proposed method identifies the region of perceiving the strong orientation feature with the real road region. To evaluate the effectiveness of the proposed method, the accuracy&error ratio in the confusion matrix was measured from road candidates including road and non-road class. As a result, the proposed method shows the more than 92% accuracy.

• The Journal of the Korea Contents Association
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• v.15 no.5
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• pp.403-413
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• 2015

The purpose of this study was to examine the degree of moral distress and turnover intention in nurses. Participants were 129 nurses working at a university hospital. Data were collected using a structured questionnaire survey from July 1 to August 8, 2014. Total mean score of moral distress was 3.18 and that of turnover intention was 3.20. There was a statistically significant differences on turnover intention between the group with high moral distress and the group with low moral distress (t = -2.11, p = .037). Further researches are needed to develop and provide ethics education program and moral distress management program to reduce the degree of moral distress of nurses in nursing practice.

• Journal of the Korean Society of Radiology
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• v.8 no.5
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• pp.231-240
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• 2014

The purpose of this study were to analyze that the Seoul neuropsychological screening battery (SNSB) for the evaluating cognitive assessment of the Parkinson's disease patients with mild cognitive impairment (PD-MCI) and the changes of the cerebral ventricle volume in the brain magnetic resonance imaging (MRI), and we has been bring forward the guideline to determine the diagnostic criteria for the PD-MCI. To achieve this, we was diagnosed with Parkinson's disease patients (PD-MCI group: 34 patients; Parkinson's disease with normal cognition, PD-NC group: 34 patients) to perform the SNSB test for the attention, language, memory, visuospatial, and frontal/executive functions and the brain MRI. Additionally, to compared the change of the cerebral ventricle volume, we performed the brain MRI for the 32 normal control (NC) group. The volumetric analysis for a specific cerebral ventricle performed by using Freesurfer Ver. 5.1 (Massachusetts general Hospital, Boston MA, USA). As a results, compared to the PD-NC group, the PD-MCI group were statistically significant reduction in the ability to perform the memory and the visuospatial function (p<0.05). The volumetric changes for a specific cerebral ventricle were statistically significant variation in the left and right lateral ventricle, left and right inferior lateral ventricle, and 3rd ventricle. Although, in order to compared the objectification, the normalized percentage applied to the volumetric changes showed to extend the PD-MCI group than the PD-NC group. Specially, the left and right ventricle extension for the PD-MCI patients conspicuously had showed a quantitative linear relationship between the memory and the visuospatial function for the SNSB (r>0.5, p<0.05). Therefore, we were able to judge the diagnostic criteria of the PD-MCI through that can observe the volumetric variation of the specific cerebral ventricle by using Freesurfer in brain MRI, and to analyze the correlation between the SNSB.