• Proceedings of the Korea Information Processing Society Conference
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• 2008.05a
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• pp.804-807
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• 2008

최근 고령화 사회가 되면서 언제 어디서나 실시간으로 진료가 가능한 서비스들을 개발하려는 노력이 진행 중이며, 이에 관련된 기술의 중요성도 급증하고 있다. 특히 유비쿼터스 컴퓨팅과 유비쿼터스 네트워크를 활용한 노인건강 관리시스템(이하 U-SilverCare)의 필요성이 급증하고 있다. 본 논문에서는 U-SilverCare에서 유용하게 사용될 수 있는 가속도 센서를 소개하고 U-SilverCare에서 가속도 센서 사용의 적합성 실험과 실험 결과를 분석한다.

• Journal of Chest Surgery
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• v.29 no.4
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• pp.403-407
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• 1996

One hundred and twenty three patients underwent 137 thoracostomies for spontaneous pneumothorax in the department of Thoracic and Cardiovascular Surgery, Gyeongsang National University from January 1987 to December 1994. There were 118 men and 6 women and average age was )2.4 years. The two most common surgical Indications were recurrent pneumothorax and continuous air leakage. Other indications were visible bullae on simple X-ray, previous contralateral pneumothorax, incomplete expansion of the lung, and bilateral pneumothoraces. Methods of thoracotomy were subaxillary thoracotomy in 82 cases, lateral minithoracotomy in 12 cases and posterolateral thoracotomy in 43 cases. Operation time was 63.0 $\pm$ 30.8, 98.3 $\pm$ 37.9, 186.9 $\pm$ 87.9 minutes respectively, and postoperative chest tube keeping time was 5.2 $\pm$ 4.1 days in subaxillary thoracotomy, 6.2 $\pm$ 5.0 days in minithoracotomy and 10.0 $\pm$ 5.8 days in posterolateral thoracotomy Bullae were present mostly at the apex in spontaneous and tuberculous pneumothorax comparred to the cases of chronic obstructive or emphysematous lung disease, where there were no redilection of presence of bullae (p< 0.01). Operative procedures were wedge resection, bullae obliteration and lobectomy. Postoperative complications were continuous air leakage, bleeding, brachial plexus injury, empyema, and wound infection, but all the complications were cured by the time of discharge. There was no mortality.

• The Korean Journal of Elementary Counseling
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• v.11 no.2
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• pp.193-217
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• 2012

The purpose of this study was to investigate and suggest directions and assignments of elementary school counseling based on positive psychology. For this purpose, the goal, contents, techniques and effects of counseling based on positive psychology were examined. Based on this review, the suggested implications for directions and assignments of elementary school counseling as follows; In connection with the directions of elementary school counseling, first, it was suggested that problem-focused counseling approaches centered a small number of problem children should be changed to strength based counseling approaches facilitating all children's whole development, happiness and well-being. Second, it was suggested that continuous and systematic counseling helps should be served to all children so that they can aware, experience and use their character strengths in their all lives at the inside and outside of their school. In connection with the assignments of elementary school counseling, first, increasing children's understanding on happiness, developing counseling programs for enhancing happiness and verifying their effects were discussed. Second, developing effective applying plans of positive counseling techniques and verifying their effects were discussed. Finally, making researches on our children's character strengths and interventions for developing their character strengths were discussed.

• 한국지구과학회:학술대회논문집
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• 2005.09a
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• pp.199-206
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• 2005

지구과학은 실생활과 직접적으로 관련되거나 학생들이 친숙하게 생각하는 많은 개념들을 포함하고 있으며 이런 특성은 과학캠프나 자연탐사 활동에서 지구과학과 관련한 탐구주제가 학생들의 큰 호응을 얻는 사실을 설명할 수 있다. 하지만 정규 수업에서 이루어지는 지구과학 실험 수업은 교과서에 제시된 자료해석 위주의 실험이 많아 학생들의 흥미를 반감시키는 경우가 많으며 자료 측정과정에서 과학자가 느낄 수 있는 중요하고 귀중한 경험을 놓칠수 있다. 그런데 인터넷에서는 해양과 대기, 천문, 지질 각 분야에서 지속적으로 갱신되는 실시간 관측 자료를 제공해 주는 곳이 많으며 이 실시간 자료들을 고등학교의 지구과학 실험에 이용할 수 있도록 학습 프로그램을 개발하면 기존의 자료해석 실험이 가지는 한계를 극복하고 학생들의 지구과학에 대한 호응도를 높일 수 있으며 보다 다양한 탐구 능력을 향상 시킬 수 있다. 이러한 학습 프로그램의 특징은 탐구 중심 혹은 문제 해결 학습을 강조하는 현재의 교육 목표를 잘 반영할 수 있다. 본 연구의 목적은 인터넷에서 제공되는 지구과학 관련 실시간 자료들을 활용할 수 있는 고등학교 지구과학 학습 프로그램을 개발하고 이를 지원할 수 있는 홈페이지를 구축한 후 실제로 수업에 적용하여 교육적 효과를 확인하는 것이다. 연구 결과 실시간 자료를 이용하는 고등학교 학생들을 위한 지구과학 학습 프로그램을 12개의 주제에 대해서 완성했다. 먼저 지구과학실험 시간에 적용할 수 있는 2차시 분량의 학습 프로그램 6주제를 개발했는데 개발 주제는 '지진이 일어나고 있는 곳은 어디인가?', '진앙으로 판의 경계를 결정하기', '진앙의 위치를 찾아라', '암영대를 찾아라', '태양의 자전 주기를 측정하기', '태양활동' 이다. 각 주제별로 수업소개, 학습목표, 과정, 학습자료(학생 활동지, 기타 자료, 수업 내용과 관련한 실시간 자료 제공 사이트 목록), 평가 자료를 만들었다. 학생들의 활동 내용은 <지진이 일어나고 있는 곳은 어디인가?>의 주제를 예로 들면 학생들이 실시간으로 전 세계의 지진활동을 모니터하는 사이트에 접속하여 최근에 지진이 어디에서 일어났는지 알아보고 지난 30일 동안에 일어났던 규모 4 이상의 지진 자료를 다운 받아 세계 지도에 점으로 표시한다. 이 때 학생들은 손으로 진앙의 위치를 지도에 그리는 대신 엑셀의 그래프 기능을 이용하여 지도에 진앙의 위치를 나타내게 한다. 또 개인 과제 연구에 적용할 수 있는 학습 프로그램을 5가지 개발하여 학생들이 특정한 주제에 대하여 탐구 과제를 수행할 수 있게 했는데 개발된 주제는 '태양 활동으로 오로라 예측하기', '국제 우주 정거장을 찾아내자', '한반도 부근의 해양 기상과 해수의 물리적 상호 관계', '일기도 분석을 통한 태풍의 진로 예측', '우리 나라 조석 예측' 이다. 마지막으로 사이버 학습을 통해서 수업 시간의 제약 없이 과제 형태로 처치 가능한 학습 프로그램 개발 했는데 그 주제는 '태풍이 저위도에서 북상하는 이유?'이다. 개발된 프로그램 중 2차시 학습 프로그램은 과학고 중학생 영재반에게, 개인 탐구 과제는 과학고 1학년 학생들에게, 사이버 수업 형태는 과학고 2학년 학생에게 적용시켰다. 실시간 자료 활용을 지원하는 홈페이지를 만들어 자료 제공 사이트에 대한 메타 자료를 데이터베이스화했으며 이를 통해 학생들이 원하는 실시간 자료를 검색하여 찾을 수 있고 홈페이지를 방분했을 때 이해하기 어려운 그래프나 각 홈페이지가 제공하는 자료들에 대한 처리 방법을 도움말로 제공받을 수 있게 했다. 실시간 자료들을 이용한 학습은 학생들의 학습 의욕과 탐구 능력을 향상시켰으며 컴퓨터 활용 능력과 외국어 자료 활용 능력을 향상 시키는데도 도움을 주었다.

• School Mathematics
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• v.10 no.3
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• pp.357-374
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• 2008

The complex number system is supposed to introduce first chapter in the first grade of high school. When number system is expanded to complex numbers, the main aim is to understand preservation of algebraic structure with regard to the flow of curriculum and textbook. This research reviewed overall alternative articulation and treatment of textbooks from a logical viewpoint. Two research questions are developed below. First, in the structure of the current curriculum, when we consider student's 'level', how are the alternative articulation and treatment of textbooks in complex unit on a logical point of view? Second, What are more logical alternative articulation and treatment? What alternative articulation and treatment are suitable for a running goal? and what are the improvement which is definitive?

• Journal of Korean Elementary Science Education
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• v.25 no.4
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• pp.383-395
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• 2006

School science is often criticized as being too remote from both learners' interests and needs and as maintaining scientist-oriented approaches rather than humanistic ones. Although science is mainly taught on the basis of textbooks inside classrooms, the learning of science can not be confined to the boundaries of curriculum and school. Firstly, this paper briefly reviews and characterizes the historical development of science education with a series of analogies, and then suggests a new analogy, a so-called 'Hearts-On' approach to science education which emphasizes the humanistic aspects and the contextual dimension of science education. Secondly, it critically examines how much traditional school science teaching, particularly in physics, is limited in terms of the context of learning (i.e. textbook, laboratory, classroom, local, and global) as well as in terms of the context of the contents (i.e. physical, personal, social, and global). Thirdly, some recent attempts initiated by the author and colleagues are explained as examples of the Hearts-On approach to science education. In particular, a series of community-based science programs led by SNU and the development of a series of books on 'Contextual Physics'(i.e. Body Physics, Wearing Physics, Dining Table Physics, and Sports Physics) are outlined. Finally, the idea of scientific humanism is explored in relation to the context-rich approaches in science education. It is hoped that this paper helps us to reconsider how we can expand the world of science education beyond the boundaries of the curriculum and school and into a more humanistic one.

• Journal of Food Hygiene and Safety
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• v.32 no.2
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• pp.101-106
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• 2017

Based on the previous reports that majority of teachers have negative perceptions on food additives, a teacher training program called 'Let's teach food additives correctly' was developed and applied to improve teachers' unbalanced perception on food additives and let them teach students with sound scientific background. The 15-hours training program consisted of understanding of food safety and food additives, education materials on food additives, development of teaching-learning plan, meeting with professionals from Ministry of Food and Drug Safety (MFDS), visiting MFDS labs, application to school class, and evaluation. A total of 63 teachers participated in the training through 2 sessions conducted in August 2016. As a result, teachers showed high satisfaction rates (4.2~4.5 in 5.0-Likert scale) and 91.5% answered the training helpful for the school class. Although their initial intention to participate the training was to know the details of negative intake effects of food additives, their such perception was totally changed in addition, they suggested a continuous training for teachers and immediate correction of incorrect information in school textbooks. Also, post-training education for 1,172 students by these teachers appeared to improve the understanding of and the native perceptions on food additives significantly (p < 0.001). Above results showed that the training program could solve the problem of transmitting unbalanced information on food additives to students by training teachers, and such channel could be used to facilitate food-related risk communication.

• Communications of Mathematical Education
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• v.36 no.4
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• pp.611-626
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• 2022

In this study, we introduced the case of college calculus course for vocational high school graduates with coding. We suggest this case as an alternative to overcome mathematics anxiety. Contents, python/SageMath codes, and textbook for this course, which help students to easily and quickly review middle and high school mathematics, were newly developed by authors. Due to the use of codes and chat with classmates in learning management system, most of the students who took this course reported that they no longer felt anxious in complex mathematics problems, had a full understanding of calculus concepts, could solve almost problems in any calculus textbooks with or without codes, and could explain calculus concepts to other students in their own words. In this way if mathematics and coding is properly used in mathematics education, it helps students with weak mathematical backgrounds or mathematics anxiety to restore confidence in mathematics in college. This could be applicable in secondary mathematics education.

• Journal of Intelligence and Information Systems
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• v.29 no.2
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• pp.23-34
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• 2023

Wearable technology for military applications has received considerable attention as a means of personal status check and monitoring. Among many, an implementation to recognize specific motion states of a human is promising in that allows active management of troops by immediately collecting the operational status and movement status of individual soldiers. In this study, as an extension of military wearable application research, a new ankle wearable device is proposed that can glean the information of a soldier on the battlefield on which action he/she takes in which environment. Presuming a virtual situation, the soldier's upper limbs are easily exposed to uncertainties about circumstances. Therefore, a sensing module is attached to the ankle of the soldier that may always interact with the ground. The obtained data comprises 3-axis accelerations and 3-axis rotational velocities, which cannot be interpreted by hand-made algorithms. In this study, to discern the behavioral characteristics of a human using these dynamic data, a data-driven model is introduced; four features extracted from sliced data (minimum, maximum, mean, and standard deviation) are utilized as an input of the model to learn and classify eight primary military movements (Sitting, Standing, Walking, Running, Ascending, Descending, Low Crawl, and High Crawl). As a result, the proposed device could recognize a movement status of a solider with 95.16% accuracy in an arbitrary test situation. This research is meaningful since an effective way of motion recognition has been introduced that can be furtherly extended to various military applications by incorporating wearable technology and artificial intelligence.

• Journal of Digestive Cancer Reports
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• v.5 no.2
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• pp.97-104
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• 2017

Background: Cachexia is a multi-factorial syndrome presenting with chronic illness, decreases in body weight, and loss of adipose tissue and skeletal muscle, mostly in patients with advanced cancer and chronic wasting disease. Even after years of intensive researches, there remains no convincing therapy to prevent cancer cachexia. Methods: In this in vivo study, we have established C26 adenocarcinoma-induced cancer cachexia model in mice to explore the underlying core changes in cytokine, signal transduction, and muscle wasting. The ultimate aim of establishing animal model is to find optimal therapeutics to mitigate cancer cachexia. Results: We have administered C26 adenocarcinoma cells onto BALB/c mice and observed 4 weeks to assess the progression of cancer cachexia. Significant loss of weight accompanied with loss of appetite was noted. As C26 adenocarcinoma xenograft progressed, mortality was started from 3 weeks, accompanied with significant sarcopenia and decreased mice movement. Surges in TNF-α and IL-6 were noted with the commencement of cancer cachexia. Conclusion: Using C26 adenocarcinoma cancer cachexia model, we can screen the optimal therapeutics to mitigate cancer cachexia, in which agents to modulate IL-6, TNF-α, and NF-κB were essential.