• Korean Journal of Optics and Photonics
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• v.8 no.3
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• pp.175-182
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• 1997

To design a high resolution three-mirror telescope for visible spectral region, initial design technique based on the generation of flat field anastigmatic solutions limited by mechanical structure was proposed. An initial design of the three-mirror telescope that features relatively high focal ratio(F/14.5), large aperture diameter(600 mm), and squared field of view(0.27$^{\circ}$$\times$1.3$^{\circ}$) was done using an initial design program. Code V was used to optimized the initially designed optical system. As a result, MTF value of the telescope was about 0.5 at Nyquist frequency in each field except for the edge of the CCD.

• Journal of Digital Convergence
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• v.14 no.9
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• pp.53-61
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• 2016

This study aimed to understand the effectiveness of teachers' backgrounds and digital textbook training experiences on digital competency, understanding of the digital textbook, perception of the digital textbook effectiveness and attitude toward the digital textbook. A total of 101 valid elementary, middle and high school teachers participated in the survey and the data were analyzed using the SPSS statistical package. As a result, male teachers showed higher digital competency than female teachers. Also, teachers who experienced with digital textbook training understood more about the digital textbook. It was suggested that a newly structured professional development program for the digital textbook considering teachers' personal backgrounds should be developed.

• Journal of The Korean Association of Information Education
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• v.26 no.5
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• pp.307-315
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• 2022

The purpose of this study was to design a training program for pre-service elementary teachers, incorporating the concepts of extended reality technologies. This program contained the basic skills necessary for them to utilize in their future classrooms. To accomplish this, 12 undergraduate students of various majors enrolled in one of Korea's national universities of education were selected as research subjects. For a total of 6 times over 6 weeks, they participated in a training program learning the basic concepts of virtual, augmented, and mixed reality, as well as creating their own education software to use in simulated classes. To improve the quality of future research efforts, this study found it would be beneficial to: 1) expand the relevant support equipment, 2) provide students with preliminary, background knowledge of text-based programming, 3) introduce short-term, more intensive training, and 4) improve the survey methods for this research.

• Journal of The Korean Association For Science Education
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• v.44 no.4
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• pp.301-311
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• 2024

We developed a small-group training program for in-service teachers focused on scientific modeling. We collected the discourses of the teachers who participated in the activity and analyzed them by type. The training program employed a collaborative approach in which a small group completed tasks and produced outputs based on the theme of 'galaxies and the Universe' to enable practical application in classes. Three in-service science teachers participated in the training program. Their discourses were recorded, transcribed, and classified into types based on individual turns and interaction units. The language expressions of the teachers reflected the unique characteristics of the teaching profession, with each participant having preferred language expression types, albeit with a generally low prevalence of specific language expression types across the participants. Differences in discourse characteristics related to the modeling theme, task presentation method, and model types, revealed that variations in the proportion of interaction unit types during the modeling design, build, and evaluation stages were primarily influenced by the teachers' familiarity with the modeling theme. While the task presentation method also influenced interaction types, model types had little impact on the distribution of interaction types. Considering these findings, training programs on modeling for in-service teachers should include a checklist to encourage sufficient interaction between participants as well as propose proper questions that can be effectively addressed through collaboration.

• Proceedings of the Korean Society of Computer Information Conference
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• 2022.07a
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• pp.387-388
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• 2022

본 연구에서는 비 정보과 교사들의 효과적인 SW 교육 교수효능감 함양을 위하여 팀 프로젝트 기반 융합 교육 프로그램을 개발하였다. 개발된 교육 내용은 융합교육 및 팀 프로젝트에 대한 이해를 바탕으로 수학, 과학, 정보 등이 융합된 다양한 프로젝트를 실습한 뒤, 직접 문제 해결을 위한 프로젝트의 설계 및 개발과 발표, 동료 평가 및 피드백의 과정으로 구성되어 있다. 이는 10주간 비 정보과 교사들에게 처치되었고, 사전-사후 t-검정 결과, 통계적으로 유의한 향상을 나타내었다. 하지만 본 연구의 실험은 단일집단을 대상으로 하였기 때문에 추후 통제집단과의 비교를 통하여 향상에 대한 통계적 비교가 필요로 된다.

• Journal of the Korean Geotechnical Society
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• v.21 no.10
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• pp.27-39
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• 2005

A finite difference program with 3-D governing equation expanded from 1-D self-weight consolidation is developed to analyze the consolidation behavior of surface dredged soil with horizontal drains. Various boundary conditions with horizontal drains and seepage pressure of pore water infiltrated to the drains are considered in the program. A laboratory soil chamber experiment for the consolidation of dredged soil is performed to validate the program and the measured settlement-time result is compared with the one predicted by the program. The influence of design conditions of horizontal drains such as horizontal installation spacing, installation depth and number of drain layers, on the consolidation is analyzed.

• Proceedings of the Korean Information Science Society Conference
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• 2005.11a
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• pp.205-207
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• 2005

유비쿼터스 컴퓨팅 응용으로 위치 추적 서비스, 산업용 제어 핀 관리 시스템, 홈 자동화 시스템 등 다양한 서비스들이 이미 사용되고 있거나 개발되고 있다. 물류 환경에서의 화물 컨테이너 관리 시스템은 선적하는 컨테이너의 안전을 보장하고 선적 경로와 현재의 위치 등을 제공하여 수출입업자에게 경제적인 이점을 제공할 수 있다. 본 논문에서는 유비쿼터스 물류환경에서 화물 컨테이너의 현재 위치를 확인할 수 있는 시스템을 설계하고 구현하였다. 컨테이너 위치 확인 시스템은 DV-hop 기법을 바탕으로 리더와 태그간의 홉 수를 계산하고 이를 이용하여 컨테이너의 정확한 위치를 결정한다. 시뮬레이션은 TOSSIM을 이용하여 리더와 태그의 정보 수집을 하였고, 서버 프로그램의 정보 분석 과정을 거쳐 태그의 위치를 계산하였다.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10c
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• pp.556-558
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• 2004

개인 컴퓨터의 소형화에 따라 유비쿼터스 컹퓨팅을 위한 웨어러블 컴퓨터가 개발되고 있다. 하나의 웨어러블 서비스 프로그램이 다양한 웨어러블 네트워킹을 활용하고 웨어러블 디바이스에 독립적으로 동작하기 위해 웨어러블 컴퓨터용 미들웨어가 필요하다. 웨어러블 컴퓨터용 미들웨어는 자원제약적 환경에 적합하도록 설계되어야 하며 BAN(Body Area Network)을 구성하는 다양한 웨어러블 디바이스의 동적 환경설정 기능을 지원해야 한다. 본 논문에서는 초경량, 초절전 웨어러블 미들웨어를 소개하고, 소형 웨어러블 디바이스간의 통신을 위해 동적 디바이스 환경설정 및 BAN 구성을 가능하게 하는 네트워크 PnP(Plug and Play) 컴포넌트를 설계 하였다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.2
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• pp.995-1005
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• 2015

This study is to analyze the AHP of the lifelong education program per each domain of six classifications. According to this study result, the relative importance of the lifelong education program per each domain is as following: Literacy education, Vocation and Workforce education, Citizen Participatory education in descending order of importance. As for the relative importance of the lifelong education program per each subcomponent is Expended literacy, Fundamental Life Skill, Workforce Continuing Education in descending order of importance. The results of this study can be used in lifelong educators of education and training and lifelong education, designed, theoretically realistic lifelong education programs development and management of educational practice field, provides many implications for the development of lifelong learning as practical implications.

• Journal of the Korean Society for Library and Information Science
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• v.44 no.2
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• pp.221-239
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• 2010

The purpose of this study is to cultivate the educational competency of pre-librarians in the Department of Library & Information Science. To achieve this, first, the program is developed which is based by PBL(Project Based Learning) method for LIS education. Second, the questionnaire for education librarian self-efficacy is developed to measure the education librarian self-efficacy. Third, data were collected from 42 LIS undergraduate students at the beginning and end of the semester-long program during which it was adopted. The data were analyzed by paired t-test with SPSS. Analysis shows the program has a significant effect on the improvement of educational self-efficacy for pre-education librarians. Also, it is hoped that for this program will be applied to continuing education programs for education librarians and teacher librarians.