• Journal of The Korean Association of Information Education
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• v.17 no.2
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• pp.167-175
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• 2013

This paper examined various study case about smart grid and STEAM education. We develop this STEAM education of IT subject using smart grid for 3rd and 4th graders in elementary school. We make this program and teaching materials by considering about student's intellectual level and interests. We offered this program to 10 elementary 4th graders in Jeju island step by step for 6 period to evaluate the effectiveness of the developed program and teaching materials. Future work will include the follow-up and extended study. It will be expected that students will be able to develop their abilities by this STEAM education using IT.

• Journal of the Korea Convergence Society
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• v.10 no.3
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• pp.149-155
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• 2019

In this study, the multiplicity of synchronous online class discussion activity is explored at conceptual level. From the cultural-historical activity theory (CHAT), each utterance may be considered as a product of the activity system. Alderfer's ERG theory is employed as another theoretical framework for the study. Based on the subject's existence, relationship, growth needs, their class discussion activities constitute four different dimensions: physical/biological, cultural/institutional, social/relational, and cooperative knowledge construction. It is inherent in individual activities and has a different arrangement according to their interests and situations, and at the same time acts as a factor of cooperation and competition among the participants. Through this, collective discussion activities represent complex and dynamic development patterns.

• Korea Trade Review
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• v.44 no.4
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• pp.87-100
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• 2019

A country's participation in international technical standards development directly relates to its trade competitiveness. Many countries adopt international standards or influence their development process through the ISO/IEC. This study applies the ABCD Model to assess such activities through a constructed ITS index, not only in terms of 'level' of contribution but also in terms of 'process' participation that can give important implications related to the future potential influence of countries in standards development. Having examined seven countries, Korea showed the lowest score implying the need to enhance its performance in both 'international standards adoption' and 'internationalization of domestic standards'. Korea needs to more actively participate in currently on-going standards development processes, establish more offices that improve accuracy in the development, and consider participating in additional committees where domestic interests may potentially be at stake. Although KATS has improved greatly in regards to its relevant activities and database construction, a more active and specific plan must be made to allow its efforts to successfully influence Korea in international standards development. Confronted with strong challenges from directly competing countries in trade like China and Japan that showed better ITS scores, there is a need for Korea to step up its research and participation in this field.

• The Transactions of the Korea Information Processing Society
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• v.3 no.3
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• pp.493-500
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• 1996

As the greater interests are focused onto wireless message transfer, wireless data base access and mobile computing the techniques for integrating various dat a services into the mobile communication systems are seriously needed. In this paper we propose a traffic handing scheme to provide mixed media services more effectively, and analyze is performance. The proposed scheme was found to improve data performances and, regardless of varying data traffic load, provide acceptable level of blocking rate to voice services simultaneouly. Also it is more effective for message-oriented data services.

• Korea Trade Review
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• v.41 no.2
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• pp.185-202
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• 2016

Interests in renewable energy have been increasing with low-carbon policy and concerns about radioactivity. And solar energy is receiving attention as the most realistic energy in the industry. Demand for solar energy was started in Germany and European countries, and further expanding to other countries. And Korea became one of the high technology level countries in that industry. So, systematic analysis is needed for trading fact and overseas expansion of Korea's photovoltaic energy together with increased demand in the world. In this paper, we analyzed panel data for 25 years, from 1990 to 2014 from 11 countries that have track record with Korea's PV product. It is conducted based on Gravity model and matched with general report for Korean PV industry. But it shows different result for other factors.

• Journal of Korean society of Dental Hygiene
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• v.6 no.4
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• pp.375-385
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• 2006

The purpose of this study is to analyze the influence of attitude of mothers on the dental health and behavior of dental health management on children on the dental caries of their children, and the questionnaire survey was implemented and analyzed for 202 children in fifth and sixth grades of two elementary schools in Ulsan City along with their mothers with the following outcome. 1. 80 students from entire subject students(39.6%) are subjects of dental caries with the average DT index shown to be $1.78{\pm}1.04$ and tended to have higher in the upper level of grade. 2. In the attitude of dental health management for mother, 95 students(47.0%) visited the dental clinic within 6 months with the main purpose of treatment, rather than preventive work, for 141 students(69.8%), and hey have high level of interests on the teeth condition of their children but they rarely take a close look at the dental condition for their children. 3. The efforts of mothers on preventing the dental caries by mothers showed in the sequence of regular instructions for brushing, limiting the sugar intake, fluorine coating, sealant, regular examination and the like and DT rate will be decreased by these kinds(p<0.05). 4. The number of dental caries of children with the attitude of mother in dental health showed noticeable differences statistically with respect to the brushing method, use of dental sanitation goods, scaling, visit to dental office and others(p<0.05). With the above conclusion, the attitude and behavior of mothers on dental care influences greatly on the dental health of children. Therefore, in order to improve the dental health of children, it would be important to recognize the importance of attitude and behavior of dental health for mothers for positive dental care with the support in policies.

• Journal of the Ergonomics Society of Korea
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• v.31 no.4
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• pp.593-599
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• 2012

Objective: This study aims to implement a non-contact gesture-based interface for presentation purposes and to analyze the effect of the proposed interface as information transfer assisted device. Background: Recently, research on control device using gesture recognition or speech recognition is being conducted with rapid technological growth in UI/UX area and appearance of smart service products which requires a new human-machine interface. However, few quantitative researches on practical effects of the new interface type have been done relatively, while activities on system implementation are very popular. Method: The system presented in this study is implemented with KINECT$^{(R)}$ sensor offered by Microsoft Corporation. To investigate whether the proposed system is effective as a presentation support tool or not, we conduct experiments by giving several lectures to 40 participants in both a traditional lecture room(keyboard-based presentation control) and a non-contact gesture-based lecture room(KINECT-based presentation control), evaluating their interests and immersion based on contents of the lecture and lecturing methods, and analyzing their understanding about contents of the lecture. Result: We check that whether the gesture-based presentation system can play effective role as presentation supporting tools or not depending on the level of difficulty of contents using ANOVA. Conclusion: We check that a non-contact gesture-based interface is a meaningful tool as a sportive device when delivering easy and simple information. However, the effect can vary with the contents and the level of difficulty of information provided. Application: The results presented in this paper might help to design a new human-machine(computer) interface for communication support tools.

• Journal of Elementary Mathematics Education in Korea
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• v.5 no.1
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• pp.55-75
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• 2001

The purpose of this paper is to find out the full extent of abilities of elementary students on area of operations and the effects on student's affective domain toward mathematics, after providing 3rd grade students with Skemp's play activities instead of providing activities suggested in the textbook of 7th curriculum. For this study, we will first analyse new elementary mathematics curriculum of 3rd grade and then explore mathematical factors for play activities related to operational sections. The play activities are revised from that of Skemp's for our classroom circumstances, but the ideas included from Skemp's such as thinking aloud were not changed. The experimental group while consists of 39 students were taught Skemp's play activities instead of usual textbook activities for 30 hours for the second term. In all other area, both the experimental group and the comparative group were taught the same contents. Statistical data is as follows 1) In addition and subtraction, the experimental group had 5.6% higher score than the comparative's, but the difference of mean of the both groups is not significant within 5% level. 2) In multiplication and division, the experimental group had 7.8% higher score than the comparative's and also the difference of mean of the beth within 5% level is significant. 3) When measured the effects in affective domain, the interests, attitude, and values for mathematics had about 10% higher score after the experiment than before the experiment. So we conclude that Skemp's activities are more effective than the activities suggested in the textbook on the area of operations, especially in multiplication and division.

• Journal of Korean society of Dental Hygiene
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• v.22 no.3
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• pp.199-207
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• 2022

Objectives: The objectives of this study were to find the influential factors of dental hygienists' work environment and level of perception of rights on their retention intention, and to provide basic data for protecting their rights and interests and improving their employment rate. Methods: From June 6 to July 24, 2021, a questionnaire survey was conducted among 214 dental hygienists via an online link. After questionnaire collection, IBM SPSS program (ver. 21.0; IBM Corp., Armonk, NY, USA) was used to conduct frequency analysis, t-test, one-way ANOVA and multiple regression analysis. Results: The significant and positive influential factors of dental hygienists' retention intention were married individuals (p=0.022), fewer working hours (p<0.001, p=0.007), good work environment (p=0.002), higher wages (p<0.001, p<0.001), higher education (p=0.032), and perception of rights in a mid-level (p=0.038). Conclusions: It is necessary to consider wages and welfare equivalent to dental hygienists' work intensity and workload. By regularly educating dental hygienists to increase their perception of rights, expanding an opportunity of participation, and improving their work environment, it will be possible to increase their retention intention and efficiently establish manpower in dental clinics.

• Journal of the Korean Society of Costume
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• v.57 no.5 s.114
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• pp.99-111
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• 2007

The purpose of this study were to identity face satisfaction and make-up behavior according to their lifestyles of middle aged women. The subjects were 350 women of 40 - 59 years old. The results of this study were as follow: 1. Lifestyle factors of middle aged women were self confidence, leisure activities, interests in appearance, economical efficiency, conservatism, and value-orientation. They were classified into four types of dignified & appearance interested group, passive stagnated group, unconfident & economic group, and value-oriented & leisure group according to their lifestyles. 2. They were satisfied with their eyes, lips, and eyebrows, but not satisfied with face tone, face shape, and skin texture. Total face satisfaction level was over average. The face satisfaction level of dignified & appearance interested group and value-oriented & leisure group were higher than other groups, but that of passive stagnated group was the lowest. 3. They pursued internal beauty and natural makeup, and did not follow trendy colors. Dignified & appearance interested group pursued characteristic, elegant, changeable, and various make-up colors, but value-oriented & leisure group pursued more various, changeable, and trendy colors. They did not prefer trendy products because of high price. Dignified & appearance interested group and unconfident & economic group were highly price-oriented, but value-oriented & leisure group purchased trendy products. 4. Dignified & appearance interested group included working women with not much income, but passive stagnated group included low-educated and non-working women. Unconfident & economic group included low-educated non-working women with not much income, but value-oriented & leisure group included highly-educated working women with high income.