• 한국정보교육학회:학술대회논문집
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• 2009.08a
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• pp.53-59
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• 2009

21세기 지식정보사회에서는 창의력, 문제해결력 등의 고등인지사고능력이 요구된다. 따라서 본 연구에서는 두리틀을 이용한 프로그래밍 수업을 통해 아동의 창의력과 문제해결력을 향상시키고자 한다. 아동의 프로그래밍 활동을 능동적으로 할 수 있는 환경을 조성하여 주되, 교사가 문제해결 과정에 따라 학습진행 과정을 모니터링하여 학생들의 문제해결 능력을 신장시켜주는 안내된 발견식 수업 모형을 적용하였다. 컴퓨터 프로그래밍의 과정에 필요한 인지적 요구사항을 토론이나 소크라테스식 질문을 통하여 반드시 거치도록 안내하였다. 초등학교 5학년 학생을 대상으로 두리틀을 이용하여 안내된 발견식 수업모형을 적용 한 결과 창의성과 문제해결력 측면에서 효과가 있음을 알 수 있었다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.5 no.5
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• pp.395-402
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• 2004

We need to develop technology of identifying high temperature high pressure(HTHP) synthetic diamond and HTHP treated natural diamonds from untreated natural diamonds to cope with sophisticated diamond enhancing technology. We had successfully identified synthetic diamonds using a vibrating sample magnetometer due to their ferromagnetic property. In addition, we identified the HTHP enhanced TypeIa, TypeIIa diamonds by employing non-destructive Fourier Transform Infrared(FTIR) spectroscopy.

• Proceedings of the Korea Information Processing Society Conference
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• 2013.11a
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• pp.23-25
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• 2013

가상화는 이미 다양한 분야에 적용되어 컴퓨팅 효율성을 높이고 있으나 장치 가상화 과정의 빈번한 입출력으로 인한 성능 저하로 높은 장치 처리량을 요구하는 분야에는 적용이 어렵다. 이를 극복하기 위한 모델들이 제안되었으나 이전 모델들은 특별한 하드웨어를 요구하거나 불필요한 게스트 장치 처리 과정을 거치는 문제가 있다. 이에 본 논문에서는 특별한 하드웨어 환경을 요구하지 않는 소프트웨어적 기법을 제안하여 근본적인 모드전환 비용을 해결하였다. 또한 제안한 가상화 인지 소켓 모델의 프로토타입을 구현하여 성능 향상의 타당성을 입증하였다.

• 한국노년학
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• v.31 no.4
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• pp.1155-1167
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• 2011

The purpose of this study was to investigate the frequency of falls, fear of falling, perceived health status, and number of disease according to cognitive function in community-dwelling the elderly women. This study utilized a descriptive survey design. Data were collected for six months with 311 elderly women who visited in public health center at S city. After obtaining Institutional Review Board(IRB) approval, a face-to-face, and private interview was conducted with each participant who was eligible and agreed to participate in this study by trained graduate-level nursing students. The questionnaires consisted of MoCA-K, K-MMSE, Fall Efficacy Scale, PHS scale. The collected data were analyzed with SPSS/WIN 17.0 program, which was used descriptive statistics, Chi-Square test and t-test, Correlation. The major findings of this study were as follows; 1) The average age of the subjects was 71.68±5.13 and cognitive function score was 22.14±4.32. approximately 35% of participants had fallen within one year. 2) there were significant differences in perceived health status according to cognitive function. 3) fear of fall and cognitive function, perceived health status and cognitive function were significant correlation. In conclusion, this study will contribute to establish strategies for preventing fall. Interventions for fall prevention and fear of fall enhancement should be developed with the consideration of the level of cognitive function in the elderly. Reducing the fear of falling through the comprehensive nursing intervention will ultimately improve the quality of life in the elderly.

• Journal of the Korean School Mathematics Society
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• v.12 no.3
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• pp.291-305
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• 2009

The purpose of this article is to formulate the base that mathematical thinking power can be improved through activating the metacognitive ability of students in the math problem solving process. The guidance material for activating the metacognitive ability was devised based on a body of literature and various studies. Two high school students used it in their math problem solving process. They reported that their own mathematical thinking power was improved in this process. And they showed that the necessary strategies and procedures for math problem solving can be monitored and controled by analyzing their own metacognition in the mathematical thinking process. This result suggests that students' metacognition does play an important role in the mathematical thinking process.

• The Journal of the Korea institute of electronic communication sciences
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• v.13 no.5
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• pp.1043-1050
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• 2018

In this paper, we propose a reinforce learning based on cooperative sensing scheme to select optimal secondary users(SUs) to enhance the detection performance of spectrum sensing in Cognitive radio(CR) networks. The SU with high accuracy is identified based on the similarity between the global sensing result obtained through cooperative sensing and the local sensing result of the SU. A fusion center(FC) uses similarity of SUs as reward value for Q-learning to determine SUs which participate in cooperative sensing with accurate sensing results. The experimental results show that the proposed method improves the detection performance compared to conventional cooperative sensing schemes.

• Journal of KIISE
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• v.42 no.1
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• pp.130-137
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• 2015

With the rapid increase of energy consumption and environmental problems, the need for green techniques is increasing. Network coding can provide a solution by reducing unnecessary data transmission and by estimating traffic patterns. In addition, it can amplify the synergy with the cognitive radio network (CR) since the CR has recognition and optimal decision functionalities. In this paper, we propose a network coding based green cognitive radio network. With the simulations, we show that the proposed scheme is up to 25% better than the previous work.

• Proceedings of the KHMA Conference
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• 2008.11a
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• pp.264-264
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• 2008

• Journal of the KSME
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• v.50 no.10
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• pp.37-42
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• 2010

이 글에서는 자동차의 품질향상이 자동차 시장에 미치는 파급효과와 최근 도요타 품질문제에서 나타난 신뢰성의 하락 영향을 분석하고 예측할 수 없는 미래의 자동차 시장에서 우리나라 자동차산업 발전에 기여할 수 있는 신뢰성의 역할이 무엇인지에 대해 생각해보고자 한다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.11
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• pp.189-196
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• 2019

This study identifies the moderating effects of cognition on the relationship between self-care confidence and self-care behavior in the diabetic elderly. The participants were 205 elderly subjects with diabetes, who visited a citizen health center located in D city, Korea. Data were collected from 20th April to 31st August 2015, and were analyzed by t-test and multiple regression. Our results reveal no significant differences between the depressive and non-depressive groups, when considering diabetes self-management confidence, knowledge, behavior and cognitive function. Cognitive function had a moderating effect in the relationship between self-care confidence and self-care behavior only in the depressed group. Our results indicate that it is therefore necessary to apply individual nursing intervention based on cognitive function and depression level, and to develop various programs for improving the cognitive function and depression amongst the diabetic elderly.