• Proceedings of the Korean Society of Medical Physics Conference
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• 2003.09a
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• pp.47-47
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• 2003

Abstract: RF Birdcage Resonator는 높은 자장 균질성과 신호 대 잡음비의 특성이 좋음으로 인해 MRI와 MRS 연구에 보편적으로 사용되고 있다. 본 연구는 인체를 비롯한 동물실험을 위한 다양한 실험대상에 따라 코일의 크기를 예측하여 Birdcage Resonator를 개발하였다. Unloaded와 Loaded 상태에서의 전기적인 성향을 Lumped Element Circuit Theory를 따라 일반적인 분석을 하였을 뿐 아니라 실제적인 실험을 통한 분석도 하였다. Introduction: Birdcage Resonator 는 자장 균일성이 뛰어나고 신호대잡음비가 좋아 Magnetic Resonance Imaging과 Spectroscopy에 유용하게 사용되어지고 있다. 이 연구에서는 실험대상에 따른 여러 가지의 Birdcage Resonator를 개발하기 위해 Lumped Element Circuit Theory를 사용한 일반적인 이론적 방법론을 이용하여 코일을 분석하였을 뿐 아니라 실제 제작한 후 실험을 통한 실질적인 영상분석도 병행하여 진행하였다. Method: 실질적인 개발에 앞서 Lumped Element Circuit Theory를 통해 이론적인 분석으로부터 나온 여러 parameter들을 정리하였다. 제작 후 실험적인 분석은 Network Analyzer (HP 4195A, 미국)를 통한 1차적인 분석을 한 후 최종적으로 3T MRI 장비 (메디너스, 한국)에서 수행하였다. 제작된 Birdcage Resonator의 종류는 기본적으로 Low-Pass Filter를 적용한 12-column 구조이다. 각각의 직경과 element의 길이는 다음과 같다. 1) 직경 13cm, element의 길이 22cm, 2) 직경 15cm, element의 길이 22cm, 3) 직경 17 cm, element의 길이 25cm. Result and Discussion: 여러 parameter들을 이론적으로 계산하여 실제 Birdcage Resonator를 제작하여 실험적인 분석을 한 결과 많은 차이가 있음을 알 수 있었다. 그 이유는 이론적인 계산에서는 생각되지 않았던 요인들이 실제 제작에 있어서는 많은 영향을 미쳤기 때문인 것이다. Network Analyzer를 통한 1차적인 분석 후에도 실제의 Magnet Field내에서 또 다시 차이가 나는 것 또한 같은 이유에서이다. 그러므로 Birdcage Resonator 제작에 있어서 이러한 여러 요인들을 충분히 고려하여야 할 것이다. Acknowledgement: 본 연구는 2002 년도 한국과학재단 목적기초연구사업 (과제번호 : R0l-2002-000-00294-0 (2002) 지원아래 수행되었다.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10e
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• pp.520-522
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• 2002

본 논문에서는 기업 구성원들이 지식경영을 실천하는데 필수적인, 구체적 방안과 그 사례연구를 제시한다. 그 실천방안은 현업에서 쓰고 있는 암묵지를 명시지로 변환하고 이를 정보시스템을 활용하여 지식경영이론을 적용하고자 하였다. 기존의 H사 지식경영의 방식을 전사적 차원의 접근방식이라면, 본 논문에서는 실무자중심에서 상향식으로 지식경영을 실천해 가는 방법론을 제공한다. 구체적으로는, H사의 정보통신운영부의 통합배선과 업무에 지식경영을 적용하여 실제의 부서 지식경영 방침을 수립하였다. 이로써 발전된 전사적 지식경영시스템에 대한 향후 과제도출과 이해를 도모하였다.

• Journal of the Korean School Mathematics Society
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• v.14 no.1
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• pp.31-42
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• 2011

The purpose of this study is to explore how elementary mathematics teachers' adaptations of a reform-oriented mathematics curriculum material in the USA, Everyday Mathematics, influence elementary students' opportunities to learn mathematics. I illustrate how elementary mathematics teachers alter the curriculum material and how such alterations influence their students' opportunities to learn mathematics in their mathematics classrooms. Results suggest that the teachers with Everyday Mathematics did not appear to maintain the cognitive demand of mathematical tasks as appeared in the curriculum material, as set up by the teacher, and as enacted in the classrooms. The results also show that the teachers seemed to omit components including important tasks and suggestions in the curriculum material. As a consequence, the students did not have an opportunity to think and understand mathematics conceptually and meaningfully; they were exposed and encouraged to learn mathematics procedurally.

• Journal of Korean Home Economics Education Association
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• v.35 no.4
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• pp.61-79
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• 2023

This study was approached as a method of reflective observation to build practical knowledge about home economics by reevaluating the experience of participating in the national development of the 2022 revised home economics curriculum through self-questioning, review, and reflection. The results are as follows: First, "all learners will still live in an unpredictable future society and choose the best actions to better themselves, their surroundings, and the world." Second, the value of home and education in the overall curriculum structure is "home economics education are life lessons that help future generations develop the competence necessary to lead a better life." Third, "in order to ensure the sustainability of all humanity and the world in the future society, the area of intentional learning that helps young people choose and lead better lives should be the core, and home economics education should focus on 'Good life Literacy'.

• Journal of the Korean Society for Library and Information Science
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• v.53 no.4
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• pp.213-230
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• 2019

Policies has envisioned directions and identified tasks, through the establishment of the University Library Promotion Act and the Ministry of Education's establishment of the Comprehensive University Library Promotion Plan, in order to put some momentum for the development of university libraries. However, these agendas are appropriate for the actual operation of the university itself to achieve these goals. This should be reflected in each university's own university library development plan. In this regard, this study attempts to investigate the perceptions of the effect of the university library strategic plans established by the university itself. Further, through the survey by university libraries, the status of university libraries in each university's regulations, the level of discussions and cooperation with the library strategic plans for each university, and any substantial changes made in university libraries are analyzed.

• Journal of The Korean Association of Information Education
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• v.23 no.4
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• pp.315-327
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• 2019

The purpose of this study was to propose an effective teaching and learning model by investigating the influencing factors of elementary school students' interest and computational thinking in software education based on flipped learning. To accomplish the purpose of the study, we developed a software education program based on flipped learning for elementary school students and applied qualitative research based on the interviews with the students and outputs from the learning process. The results of this study, First, factors affecting interest in the elementary school students' software education based on flipped learning were 'the expectation of class', 'authentic task', 'the accomplishment of task' and 'interaction with peers'. Second, the factor of enhancing computational thinking was 'the accomplishment of task', 'interaction with peers', and 'the teacher's meaningful feedback'.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.16 no.1
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• pp.5-26
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• 2005

Sookmyung Women's University Library developed a Cyber Learning Program for Information Literacy Education in the Fall semester of 2004. The program was enforced as a pass/fail prerequisite of the "Reading & Writing", a compulsory course for the first-year students. The paper describes why and how the university reached to the decision to initiate such a program. It identifies the factors which contributed to the early success of the program by analyzing the contents development process and the actual course management process. Suggestions for further developments is made by analyzing the technical and procedural difficulties faced using the Learning Management System(LMS).

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2004.05a
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• pp.63-63
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• 2004

기계류는 대개 부정형의 형상을 지니고 있으며, 또 표면이 모두 연결되어 있으므로, 진동하는 물체 표면상에서의 소음원 특성을 세밀히 파악하는 일은 매우 어려운 일이다. 음향 인텐시티나 공간 푸리에 변환을 이용하는 홀로그래피 기법 등의 어레이 마이크에 의한 기법들이 제안되었고 또 활용되고 있으나, 이는 어디까지나 음원에서 가까운 음장을 가상적인 음원면이라 보고 재구성하는 것이어서 실제 음원의 특성을 파악하는데 어려움이 있다. 이러한 문제점을 해결하기 위해 음원표면을 경계요소화 모델링을 하고, 어레이 마이크로 측정될 음장의 지점과 표면간의 관계를 수학적으로 정리한 후, 마이크에서 측정된 신호를 이용해 역으로 경계요소해석 계산을 수행하여 음원 특성을 파악하는 기법이 제안되었다. 본 발표에 있어서는 이와 같은 취지에서 ‘개발된 Inverse BEM을 이용한 NAH 기법’에 관한 개괄적인 내용을 설명하고, 그 적용 가능성 및 이 기법의 미래에 대해 설명하며, 다음과 같은 내용의 순서대로 설명된다: $\textbullet$ 각종 음원 파악 기법들의 특성과 이 방법이 필요한 이유 $\textbullet$일반 음향 holography 기법 (STSF)과의 차이점 $\textbullet$ 이론적 배경 개괄 $\textbullet$ 실제 적용 순서에 따른 방법의 설명 $\textbullet$ 후처리 결과물 $\textbullet$ 본 기법의 향후 과제 및 적용 방법의 개선

• Therapeutic Science for Rehabilitation
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• v.10 no.2
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• pp.95-108
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• 2021

Objective : This study aimed to develop prototypes of "smart stacking cones" by combining ICT to evaluate and train the upper extremity function and dual task performance in patients with central nervous system impairment, and to identify the complementary point to the completion of the device through a usability test. Methods : This prototype comprised of a hardware and software system that enabled the evaluation and training of patients and the management of data obtained from patients' performance. Specific measurement variables were established so that patient performance could be measured correctly. Based on the measurement variables, a the prototype included a 'single task evaluation modes', 'dual task evaluation mode', 'single task training mode', and 'dual task training modes'. Additionally, a usability test was conducted to assess clinical applicability and overall satisfaction for the prototype. Results : The results of the usability test were generally found to be appropriate. The 'content adequacy' in the usability test was the area with the highest level of adequacy and the lowest level of inadequacy. Additionally, overall 'satisfaction' in the usability test was the area with the highest appropriate and inappropriate levels. Hence, the overall satisfaction results were unstable. Conclusion : Future studies should be conducted to identify the clinical effectiveness of the device by applying an upgraded smart stacking cone to an actual patient group.

• Korean Journal of Social Welfare
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• v.62 no.2
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• pp.375-397
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• 2010

Previous studies on empowerment have commonly noted that current practice of empowerment understands empowerment only macroscopically and limitedly without reflecting the true idea of empowerment. In addition, they are emphasizing lack of information on specific techniques for the practice. Thus, the present study purposed to examine independent living movement for the disabled, which have experienced structural and institutional changes and produced actual improvements in policies as their results, and the characteristics of empowerment observed in the development process. According to the results of this study, empowerment consists of a total of five stages, and among them, the stage of conscientization is very important for individual empowerment and the stage of organization for macroscopic empowerment.