• Korean Journal of Human Ecology
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• v.21 no.5
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• pp.837-848
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• 2012

This study evaluated the types of daily routines that occurred in child care centers based on four general categorizations: time spent on indoor free choice activities, outdoor activities, group activities and special activities. In addition, resulting child care teacher behaviors were examined based on daily routine types. A total 23 classes' activity times and teacher behaviors were observed. The collected data were analyzed using descriptive statistics, hierarchical cluster, and Mann-Whitney U. Results indicated that there were 2 principle daily routine, 'indoor/outdoor activity time oriented' and 'group activity time oriented'. Analysis showed that teachers who belonged to the 'indoor/outdoor activity time oriented' type showed more positive affect, positive guidance, neural guidance, and less non-involved behavior. Results suggest the importance of time spent on free choice activities in the context of daily routine for quality childcare.

• Journal of Multimedia Information System
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• v.1 no.2
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• pp.133-142
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• 2014

In the revised 2015 curriculum, it is emphasized that fostering of the students as the capable 'creativity-convergent' individuals can be achieved by offering them the opportunities to cultivate the basic knowledge in liberal arts, society and scientific technologies through schooling. While retaining the basic principle of 'fostering creative people', this fundamentally-reformed curriculum involves improvements in the elementary and middle school curriculums in response to the national and social demands in which active responses to the changes in the educational environments and amelioration of the problems posed in the field applications are required. Accordingly, a novel future-oriented curriculum is necessary for the classroom teaching, and to realize the goal, the 'Competence-oriented Social Multimedia Computer Network Curriculum' adopting the virtualization and the 'Bottom-up' methods has been proposed in this paper as a feasible and practical curriculum. Our curriculum will be compared with the recent Cisco high school curriculum and analyzed contemplating recent curriculums in US, UK, Japan and India. Two 1-year practice courses are examined to prove the validity of the proposed curriculum for a period of two years as a qualitative research project. The results of the comparative analysis will show that our proposed curriculum is superior to the Cisco high school curriculum in the aspects of economic feasibility and learning satisfaction.

• International journal of advanced smart convergence
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• v.7 no.3
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• pp.79-91
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• 2018

Service Oriented Architecture (SOA) has appeared as an absorbing architectural approach that empowers the available systems to reveal their performance in the act of services, without creating important changes to the systems. This approach, due to its flexibility of adoption, has been widely recognized as an appropriate approach for implementing in organizations by many scholars and practitioners. Though, there are many studies that depict success factors of SOA; at the same time a few minor cases of failure has also been reported in the literature. In spite of the availability of rich material on SOA (in general), there is no systematic literature review on the potential aspect of SOA adoption factors. Hence, this article presents a systematic review of existing studies related to the SOA adoption and its success and failure factors from 2009 to 2015. The principle purpose of the study is to bring forward the existing issues and share our findings with researchers. Moreover, the findings of this paper would help IT experts in organizations to concentrate on the key factors highlighted in this study, so that they could decide whether it is advisable to adopt SOA or not in their context.

• The Transactions of the Korean Institute of Electrical Engineers
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• v.36 no.8
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• pp.529-538
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• 1987

The time optimal position control scheme based on the Pontryagin's minimum principle is proposed in the current source inverter(CSI) fed induction motor system. The field oriented induction motor system is modelled with a second order plant and a switching curve is obtained by solving Hamiltonian equation. The validity of time optimal control solution has been verified by experimental tests carried out with a prototype MC68000 based microcomputer system, and 5Hp induction motor. Experimental results are in a close agreement with those the digital simulation ones.

• Proceedings of the KIPE Conference
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• 1999.07a
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• pp.394-398
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• 1999

Direct Torque Control method for an Induction Motor is presented which is quite different from field-oriented control. It carries out a precise and quick control of the stator flux and electromagnetic torque of an IM without calling for coordinate transformation, speed measurement, and stator current control. In principle, moreover, DTC operation requires only the knowledge of the stator resistance.

• Korean Institute of Interior Design Journal
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• v.24 no.3
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• pp.38-47
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• 2015

This study evaluated non-liturgical space of catholic churches based on the four principles of universal design; accessible design, supportive design, safety-oriented design, and adaptable design. To design those spaces in terms of supportive design principle, diaper exchanging station needs to be placed in the restroom. Findings of this study are as follows: In terms of accessible design, valid width of entrance door to each room(more than 800mm), installation of elevator, height of riser in the stair, and width of step board were appropriate, but there were many spaces where door sils were not removed. In terms of supportive design, notice board at teacher's room and installation of storage closet, and width of passage to office(more than 1,200mm) were also appropriate, but storage closet at a meeting and prayer room, and space for storing flowers appeared inappropriate. To design those spaces in terms of supportive design principle, diaper exchanging station needs to be placed in the restroom. In terms of safety-oriented design, installation of round-edged furniture, use of non-slip flooring material, installation of safety emergency bell at a restroom, and installation of wall handle were required. In terms of adaptable design, space for wheelchair users at each room, installation of the furniture that can adjust the height, installation of desk with different height at an office, installation of toilet and basin considering children were considered to be necessary.

• Communications of Mathematical Education
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• v.27 no.3
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• pp.249-266
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• 2013

The purpose of this research is to investigate the principles for the development of mathematics textbook based on storytelling through literature review, textbook development, and classroom implementation. Mathematics textbook based on storytelling has been developed to help students learn mathematics interesting and meaningful. The principle for the development principles include as the principle of context, process-oriented, communication, and diversity. The developed mathematics textbooks was implemented in high school mathematics classes in order to investigate the effectiveness of the textbooks. We analyzed the data collected by the survey and the interview to find that the mathematics textbook based on storytelling had positive effect on teaching and learning of mathematics. We discussed the implication for the future development and implementation of mathematics textbook based on storytelling.

• The Journal of Korean Association of Computer Education
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• v.12 no.5
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• pp.1-13
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• 2009

Systematic information protection education is necessary to evoke the importance of information protection to the students and to provide them with alternatives to cope with malicious attacks. However, there have been too little development of the methods of systematic education and teaching materials to allow an effective education of information protection in the classrooms today. In this paper, we developed principle-oriented visual learning materials using UCC (User Created Content) for an effective education of information protection and evaluated the effectiveness of our approach with independent sample t-test method after being used in two classes, a test group and a control group. In particular, using UCCs, which have become the most frequently used contents in the Internet, as visual material for the education of information protection, proved to be effective in promoting the interest of students in classes and highly useful in education.

• Geophysics and Geophysical Exploration
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• v.20 no.3
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• pp.176-184
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• 2017

To interpret the seismic image precisely, random noises should be suppressed and the continuity of the image should be enhanced by using the appropriate smoothing techniques. Structure-Oriented Filter-Edge Preserving (SOF-EP) technique is one of the methods, that have been actively researched and used until now, to efficiently smooth seismic data while preserving the continuity of signal. This technique is based on the principle that diffusion occurs from large amplitude to small one. In a continuous structure such as a horizontal layer, diffusion or smoothing is operated along the layer, thereby increasing the continuity of layers and eliminating random noise. In addition, diffusion or smoothing across boundaries at discontinuous structures such as faults can be avoided by employing the continuity decision factor. Accordingly, the precision of the smoothing technique can be improved. However, in the case of the structure-oriented semblance technique, which has been used to calculate the continuity factor, it takes lots of time depending on the size of the filter and data. In this study, we first implemented the SOF-EP method and confirmed its effectiveness by applying it step by step to the field data. Next, we proposed and applied the corner response method which can efficiently calculate the continuity decision factor instead of structure-oriented semblance. As a result, we could confirm that the computation time can be reduced by about 6,000 times or more by applying the corner response method.

• Journal of Industrial Convergence
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• v.17 no.4
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• pp.45-51
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• 2019

In this study, climate change considerations are an important measure to create a resilient city that conforms to the principle of sustainable development that balances the economic, social and environmental harmony of a country or city and can preserve its size, function and characteristics to the maximum extent possible. In this regard, the public transportation system being built and operated in Dublin City, Ireland, illustrates the city's system through green traffic. Therefore, based on the urban-based conditions equipped by Dublin, Ireland, in that Dublin is realizing preemptive mass-traffic-oriented urban development (TOD) considering climate change, the purpose of the study was to classify the methods of research as internal (strong and weak) and external (opportunity and threat) factors through SWOT analysis and to present mass-oriented urban development strategies and policy implications.