• Journal of Gifted/Talented Education
• /
• v.24 no.3
• /
• pp.463-477
• /
• 2014

The purpose of this study was to investigate the conceptions toward ICT in students who are currently enrolled in giftedness in invention classes. A total of 147 students at the junior and high school level responded to a 33 item questionnaire. Results show that these students consider ICT as very important and that it will become more important in the future. They also indicated that they frequently use ICT in their studies and also in their work. But a majority of the students considered their level of expertise in the ICT area as 'moderate', and their application of the programs as 'elementary'. Thus it can be assumed that these students did not have enough opportunity to learn ICT related skills. These students also expressed the desire to receive systematic instructions in the ICT area beginning from simple application to program development. The students thought that ICT skills need to be incorporated into the invention education to lead to better inventions. Considering the fact that the ICT area is becoming increasingly important and that Korea is considered a representative country in ICT, the reality of ICT education does not stand up to expectations, and the creative software development capacity is relatively low. Therefore, there is a need to incorporate ICT contents into the education for the giftedness in invention classes, and also to form connections with software development and invention education.

• Journal of the Korea Society of Computer and Information
• /
• v.24 no.12
• /
• pp.9-16
• /
• 2019

The goal of this study is to propose an efficient model for recognizing and classifying tree images to measure the accuracy that can be applied to smart devices during class. From the 2009 revised textbook to the 2015 revised textbook, the learning objective to the fourth-grade science textbook of elementary schools was added to the plant recognition utilizing smart devices. In this study, we compared the recognition rates of trees before and after retraining using a pre-trained inception V3 model, which is the support of the Google Inception V3. In terms of tree recognition, it can distinguish several features, including shapes, bark, leaves, flowers, and fruits that may lead to the recognition rate. Furthermore, if all the leaves of trees may fall during winter, it may challenge to identify the type of tree, as only the bark of the tree will remain some leaves. Therefore, the effective tree classification model is presented through the combination of the images by tree type and the method of combining the model for the accuracy of each tree type. I hope that this model will apply to smart devices used in educational settings.

• Journal of Korean Society of Occupational and Environmental Hygiene
• /
• v.31 no.1
• /
• pp.73-82
• /
• 2021

Objectives: This study aimed to investigate the public cognition and information acquisition route for heavy metals and organic solvents in the general population in order to provide information for the development of public relations materials. Methods: The study was carried out by questionnaire from January to March 2011 by an interview with trained surveyors. There were 700 participants, divided by gender and age. A questionnaire was issued consisting of subjective and objective cognition evaluation items and questions about information acquisition route and preferred information acquisition route for six heavy metals and five organic solvents. Data were expressed as a percentage using the SPSS 23.0 software package. Result: For heavy metals, subjective and objective cognition degrees were higher in the order of lead, mercury, cadmium, and arsenic. They were higher among males than females, and in adults compared to school-age subjects. For organic solvents, both cognition degrees were high in the order of acetone, benzene, and formaldehyde. However, cognition degree by gender and age showed a complex pattern. As a response to information acquisition route, broadcast media had the highest in all ages and genders, followed by word of mouth from neighbors in elementary school children, school education or expert lectures in middle and high school students up to people in their 30s, and print media among those in their 40s to over 60s. There was no difference in the order by gender. As a response to preference for information acquisition route, broadcast media also proved the highest in all ages and genders, followed by school education or professional lectures among those in elementary school and over their 60s, and the internet in other age groups. Females preferred school education or expert lectures and word of mouth from neighbors, while males preferred the internet. In the case of the internet, the ranking was higher for preferred information acquisition route compared with the ranking for information acquisition route. Conclusions: This data on cognition degree, information acquisition route, and preferred information acquisition route according to gender and age can provide basic data for the development of educational and promotional materials for heavy metals and organic solvents exposure management.

• Journal of the Korea Society of Computer and Information
• /
• v.24 no.1
• /
• pp.179-186
• /
• 2019

The purpose of this study is to investigate the drinking culture and attitude difference by gender and grade of Korean college students. A questionnaire was conducted to analyze the characteristics and meaningful differences by two variables about drinking pattern, culture and related policies. The analysis showed that regardless of gender, far more students were against than in favor of prohibition on drinking within campus, whose legislation recently failed. Meanwhile, there was a significant difference by grade in victimization experience regarding drinking within the campus, and by gender in frequency, beverage type, volume, onset of drinking within school. There was no statistically significant gender-based difference in response to experience of damage caused by drinking, but the research results of the related papers show that the female students are more dangerous and need special attention and care. Universities should implement a professional counseling program that is customized according to gender or level of education, and managed by group. Moreover, health authorities must seek a way to lead this move, such as providing incentives to the universities, which efficiently deal with students' drinking problem. And the prohibition on drinking within campus, whose legislation recently failed should be reconsidered.

• Journal of Radiation Protection and Research
• /
• v.47 no.2
• /
• pp.67-76
• /
• 2022

Background: We conducted a cross-sectional study of residents within and outside Fukushima Prefecture to clarify their perceptions of the need for smartphone applications (apps) for explaining exposure doses. The results will lead to more effective methods for identifying target groups for future app development by researchers and municipalities, which will promote residents' understanding of radiological situations. Materials and Methods: In November 2019, 400 people in Fukushima Prefecture and 400 people outside were surveyed via a web-based questionnaire. In addition to basic characteristics, survey items included concerns about radiation levels and intention to use a smartphone app to keep track of exposure. The analysis was conducted by stratifying responses in each region and then cross-tabulating responses to concerns about radiation levels and intention to use an app by demographic variables. The intention to use an app was analyzed by binomial logistic regression analysis. Text-mining analyses were conducted in KH Coder software. Results and Discussion: Outside Fukushima Prefecture, concerns about the medical exposure of women to radiation exceeded 30%. Within the prefecture, the medical exposure of women, purchasing food products, and consumption of own-grown food were the main concerns. Within the prefecture, having children under the age of 18, the experience of measurement, and having experience of evacuation were significantly related to the intention to use an app. Conclusion: Regional and individual differences were evident. Since respondents differ, it is necessary to develop and promote app use in accordance with their needs and with phases of reconstruction. We expect that a suitable app will not only collect data but also connect local service providers and residents, while protecting personal information.

• Structural Engineering and Mechanics
• /
• v.60 no.4
• /
• pp.633-653
• /
• 2016

One of the major threats to the stability of classical columns and colonnades are earthquakes. The behavior of columns under high seismic excitation loads is non-linear and complex since rocking, wobbling and sliding failure modes can occur. Therefore, three dimensional simulation approaches are essential to investigate the in-plane and out-of-plane response of such structures during harmonic and seismic loading excitations. Using a software based on the Distinct Element Method (DEM) of analysis, a three dimensional numerical study has been performed to investigate the parameters affecting the seismic behaviour of colonnades' structural systems. A typical section of the two-storey colonnade of the Forum in Pompeii has been modelled and studied parametrically, in order to identify the main factors affecting the stability and to improve our understanding of the earthquake behaviour of such structures. The model is then used to compare the results between 2D and 3D simulations emphasizing the different response for the selected earthquake records. From the results analysis, it was found that the high-frequency motion requires large base acceleration amplitude to lead to the collapse of the colonnade in a shear-slip mode between the drums. However, low-frequency harmonic excitations are more prominent to cause structural collapse of the two-storey colonnade than the high-frequency ones with predominant rocking failure mode. Finally, the 2D analysis found to be unconservative since underestimates the displacement demands of the colonnade system when compared with the 3D analysis.