• The Transactions of the Korean Institute of Power Electronics
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• v.17 no.1
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• pp.48-56
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• 2012

This paper deals with power electronic converter education program using LabVIEW. LabVIEW is a graphic based programming language with easy debugging, which is suitable for education program that can be used to study and figure out the operation of power electronic converters. When LabVIEW is employed as a simulation program of the operation of power electronic converters, the resulting program has the advantage such that the effects of the change of control variables and circuit parameters on the various variables such as the output voltage and the inductor current etc can be directly displayed without any separate compiling procedure. This paper shows the design procedure and the characteristics of the power electronics education program implemented by LabVIEW focusing on DC-DC converter among power electronic converters.

• Transactions of the Korean Society of Pressure Vessels and Piping
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• v.7 no.4
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• pp.57-62
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• 2011

As NPPs' operating times increase, the integrity of nuclear components is continually degraded due to aging effects of systems, structures and components. In addition, for the case of continued operation beyond design life, additional aging effects occurred during the extended operating period lead to more degradation of the integrity of nuclear components. Therefore, it is very important to mange and evaluate the aging to secure the safety of NPPs. Wolsong unit 1 is approaching to its design life of 30 years in 2012. The license renewal documents for continued operation of Wolsong unit 1 Is under reviewing now. In this paper, regulatory technologies for continued operation of Wolsong unit 1 developed by KINS will be introduced. That technologies include the safety review guidelines, regulatory guides for aging management program and regulatory program for audit calculation.

• Journal of Forest and Environmental Science
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• v.36 no.3
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• pp.243-254
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• 2020

This study was conducted to develop a forest education program through middle school curriculum linkage. We used the ADDIE model, comprising the five phases of Analysis, Design, Development, Implementation and Evaluation, to secure the objectivity of the program. In the Analysis phase, middle school textbooks were analyzed while considering middle school students' needs for curriculum linkage and the developmental stages of adolescents. The Design phase focused on promoting an understanding of curriculum subjects based on what was reviewed in the Analysis phase and concretized and organized a program that can be implemented in the forest, with a focus on science and physical education, based on the results of middle school students' needs. We also established the objectives and goals of curriculum linkage forest education, established the concept of the program, and selected the educational contents, teaching-learning methods, and evaluation methods. In the Development phase, we developed a 2-night, 3-day program linkage with the middle school curriculum and created a manual for instructors and a workbook for students. In the Implementation phase, we revised and supplemented the program through the first test operation with 24 students in their second year of middle school, after which, we carried out a six-session program for the 2-night, 3-day as the second test operation with 17 students in their second year of middle school. In the Evaluation phase, the program was evaluated by the students who participated in the second test operation using questionnaires on satisfaction and curriculum linkage understanding as well as rating scales for attitudes toward forests and environmental sensitivity. The results showed that middle school students showed positive significance in satisfaction and understanding of the middle school curriculum as well as attitudes toward forests and environmental sensitivity through the forest education program.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.18 no.1
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• pp.61-93
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• 2007

This study aims at presenting the scheme for operation of reading classroom programs through analysis of present situation of reading education programs in public libraries. To collect data for analyzing the present situation, the plan and its report in relation to operation of reading classroom programs in 22 public libraries, implemented in winter, 2007, were used. In addition, questionnaire surveys to the librarians in charge of reading classroom programs in 22 public libraries were also carried out. As the remedies to problems of the program operations were presented in identification and participation, contents of education, manpower, reeducation of librarians, budgets, facilities, and work structure. The scheme for operation of reading classroom programs for keeping the characteristics and tradition of public libraries needs to develop an operation manual for reading classroom programs.

• Journal of the Korean Institute of Rural Architecture
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• v.13 no.2
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• pp.31-38
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• 2011

The domestic rural villages have faced on the many problems in future society. The major purposes of this paper are to clarify in space program for the Rural Activating through the Urban-Rural Exchange. Firstly, it has examined the rural amenities of rural resources, such as natural surroundings, culture, history, landscape, economy, community power etc. Secondary, it was checked about analysis of operation programs corresponding to the rural resources. Thirdly, These space program of Urban-Rural Exchange, which has been archived process of spacial planning, was investigated the spacial conditions corresponding to the operation programs. To make Urban-Rural Exchange Center, it was necessary to analyze physical spacial size of building gross area, by data of cross checking with the area per capita and area per household in the rural village. According to the research, Urban-Rural Exchange Center was to be included visiting center, multipurpose room and dining room, exhibiting space, conference room, experience room, welfare space and specialized room with activation of rural village. However additional conditions are required that it is based on the sustainable development, environmentally friendly architecture both operation program and space program for the value of common society, citizen and villagers.

• Journal of Korean Public Health Nursing
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• v.34 no.2
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• pp.182-197
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• 2020

Purpose: This study undertook to qualitatively investigate the operation status, support requirements and improvement plans for establishing an appealing dementia rest area in Gyeongsankbuk-do. Methods: Data were collected from May 1 to June 20, 2019, using participation observation and in-depth interview of 8 health professionals, and were subjected to qualitative analysis. Results: Our analysis revealed 4 themes and encompassing 16sub-themes: 1) program operation status (hard to prepare and operate programs, difficulty adjusting the program level, various needs of program participants, lack of mutual understanding among program participants); 2) policy support needs (need for assistants staff and basic education, requirement of extensive training for the main operators, support program aid equipment, incentive payments and performance reflections); 3) project operation's improvement plan (improved the operation of doubles classes, improved of training materials for the main operators, improved program activities and workbooks, Increasing the number of dementia rest areas); 4) positive effects and changes (positive effects of specialized projects, changes in perceptions of dementia, strengthening community awareness through doubles classes, synergy effect on community health care post awareness) Conclusion: We believe the current study results can be applied as basic data for establishing a new model, and will positively impact the national dementia management project.

• Journal of Astronomy and Space Sciences
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• v.38 no.3
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• pp.185-192
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• 2021

This technical paper deals the practical transformation algorithms between several lunar reference frames which will be used for Korea pathfinder lunar orbiter (KPLO) flight operation. Despite of various lunar reference frame definitions already exist, use of a common transformation algorithm while establishing lunar reference frame is very important for all members related to KPLO mission. This is because use of slight different parameters during frame transformation may result significant misleading while reprocessing data based on KPLO flight dynamics. Therefore, details of practical transformation algorithms for the KPLO mission specific lunar reference frames is presented with step by step implementation procedures. Examples of transformation results are also presented to support KPLO flight dynamics data user community which is expected to give practical guidelines while post processing the data as their needs. With this technical paper, common understandings of reference frames that will be used throughout not only the KPLO flight operation but also science data reprocessing can be established. It is expected to eliminate, or at least minimize, unnecessary confusion among all of the KPLO mission members including: Korea Aerospace Research Institute (KARI), National Aeronautics and Space Administration (NASA) as well as other organizations participating in KPLO payload development and operation, or further lunar science community world-wide who are interested in KPLO science data post processing.

• Korean Management Science Review
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• v.9 no.1
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• pp.41-52
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• 1992

The QOS(Quality of Service) recognized by the customer will become the most important thing under the competitive telecommunications market. Korea Telecom is going to develop many system to manage the telecommunication network, to improve the level of QOS, and to increase the revenue. Operation and Maintenance Adiministration System is one of the systems developed to meet those purposes efficiently. This system gathers qualities data from telephone offices or operation centers and analyze the results of QOS improvement activities and evaluate overall QOS. And also system makes it possible to improve the cost/effectiveness of operation and maintenance of telecommunication network. Operation and Maintenance Administration System has four functional modules, i.e., the user interface module, the database management module, the QOS management module, and the database conversion module. The purpose of this study is to develop the QOS management program, one of the four functional modules of the system,using FOCUS 4GL/DBMS. Since Operation and Maintenance Administration System is developed using FOCUS 4GL, every user can handle and maintain the system very easily and reduce system backlogs.

• The Transactions of the Korean Institute of Electrical Engineers
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• v.43 no.2
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• pp.251-258
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• 1994

To apply the Power MOSFET to the high powerd circuits, the parallel operation of the Power MOSFET must be considered because of their low power rating. This means, in practical applications, design methods for the parallel operations are required. However, it is very difficult to investigate the problem of parallel operations by directly changing the internal parameters of the MOSFET. Thus, in this paper, the effects of internal parameters for the parallel operation are investigated using SPICE program which is often used and known that the program is very reliable. The investigation results show that while the gate resistance and gate capacitances are the parameters which affect to the dynamic switching operations, the drain and source resistances are the parameters which affect to the steady-state current unbalances. Through this investigation, the design methods for the parallel operation of the MOSFET are suggested, which, in turn, contributes to the practical use of Power MOSFETs.

• Journal of the Korea Safety Management & Science
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• v.5 no.4
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• pp.13-20
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• 2003

The purpose of this study is to know the status of prevention on health obstacle in industries with confined space. Total 190 respondents, 95 safety or health managers and 95 confined space workers from 95 industries with confined space are surveyed by hygienists from April 2003, to July 2003. The contents of survey include health-work program in confined space, instrument of oxygen sampling, equipment of ventilation, safety and health education, watching manager, head count, awakening of risk, air condition and emergency training. The results are as follows: 1. It is found 38% of respondents established health-work program in confined space. The percentage of respondents with instrument of oxygen sampling and equipment of ventilation, operation of safety and health education, posting of watching man and operation of head count are 42%, 35%, 75%, 46% and 56%, respectively. 2. The percentage of awakening of risk, confirm of air condition and operation of emergency training are 36%, 25% and 15%, respectively.