• Steel and Composite Structures
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• v.52 no.3
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• pp.357-376
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• 2024

In this paper, weakly bonded ultra-high-strength steel bars (UHSS) were used as longitudinal reinforcement in recycled aggregate concrete shear walls to achieve resilient performance. The study evaluated the repairability and hysteresis performance of shear walls before and after retrofitting. Quasi-static tests were performed on recycled aggregate concrete (RAC) and steel fiber reinforced recycled aggregate concrete (FRAC) shear walls to investigate the reparability of resilient shear walls when loaded to 1% drift ratio. Results showed that shear walls exhibited drift-hardening properties. The maximum residual drift ratio and residual crack width at 1% drift ratio were 0.107% and 0.01mm, respectively, which were within the repairable limits. Subsequently, shear walls were retrofitted with bonded X-shaped CFRP strips and steel plates wrapped at the bottom and retested. Except for a slight reduction in initial stiffness, earthquake-damaged resilient shear walls retrofitted with a composite method still had satisfactory hysteresis performance. A revised damage assessment index D, has been proposed to assess of damage degree. Moreover, finite-element analysis for the shear wall before and after retrofit retrofitting was established in OpenSees and verified with experimental results. The finite element results and test results were in good agreement. Finally, parametric analysis was performed.

• Transactions of the KSME C: Technology and Education
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• v.3 no.3
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• pp.225-232
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• 2015

The control element drive mechanism (CEDM) is an electro-mechanical device to control reactivity of the nuclear reactor. The conventional CEDM was installed on a nozzle of the reactor vessel closure head as an ex-vessel type. However, there have been demands for an in-vessel CEDM to fundamentally eliminate the rod ejection accident. Conceptual design of the in-vessel CEDM, which was developed based on the existing technology of the ex-vessel CEDM, is introduced in this paper.

• Journal of IKEEE
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• v.19 no.3
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• pp.407-414
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• 2015

Electrical impedance tomography is an imaging technique to reconstruct the internal conductivity distribution based on applied small currents and measured voltages through an array of electrodes attached on the boundary of a domain of interest. In this paper, an analytical solver with complete electrode model is derived and the analytical voltage data are calculated. Moreover, the voltage data are also computed with existing numerical solvers such as finite element method and boundary element method. The forward solutions using homogeneous and inhomogeneous conditions are compared with phantom experiments through the root mean square errors.

• 한국정보교육학회:학술대회논문집
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• 2011.01a
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• pp.1-5
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• 2011

A change toward a digital society is requiring of the human quotient who had new informatization ability, and is large to education is affecting it. The digital Storytelling which effective anger to be educational of traditional Storytelling was combined with came into being in these changes. As I provide together multi-media element such as a screen and sound digital Storytelling jumps over the existing Storytelling, and to move, I easily cause an interest of student, and I stimulate intellectual faculties various of a schoolchild, and I make bidirectional enemy interaction possible. Therefore, I extract whether it is the education that it can apply on-site an elementary school of a cow in this study after analyzing digital Storytelling, and digital Storytelling designs the class that it is possible, and I will present it.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2011.06a
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• pp.16-19
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• 2011

In 2010 Manila Conference, the revised STCW (International Convention on Standards of Training, Certification and Watch-keeping for Seafarers) of IMO recalled that a large percentage of maritime casualties and pollution incidents are caused by human error. Therefore, education and training improvement will play important role to reduce maritime casualties. From this, we focus on improving safety during sailing through upgrading the education and training for Korean cadets by updating maritime education and training program. In terms of a maritime education program from some of the maritime universities in the world such as United States Merchant Maritime Academy(USMMA) Philippine Merchant Marine Academy(PMMA), are compared to the Maritime University in Korea. As a result, we suggest an effective education system.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2006.05a
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• pp.817-820
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• 2006

The IT education is the element which is important from information anger society which is changing quickly to be self-explanatory and the talented men who will work from IT field educates the role of the college agency for is becoming larger. But information - computer subject are not regular academic work still from the secondary school and the disciple of teacher appointment the teacher positivity from the now college of education which is coming to be narrow little by lit시e must dispose positive and spontaneously. Becomes the hazard IT powerful country which will reach and our country computer education for analysis it tries the appointment humble refusal for the curriculum and a computer teacher positivity of the hazard college of education and it analyzes, the reporter to propose field must be improved it.

• Korean Journal of Childcare and Education
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• v.15 no.3
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• pp.39-60
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• 2019

Objective: The purpose of this study was to analyze the Nuri-curriculum daycare programs for 3, 4, and 5-year-olds based on the Child Welfare Act. Methods: Data were analyzed according to the analysis criteria for 195 children's safety education programs in the Nuri-Program. The analyzed data used frequency and percentages. Results: First, life safety education was the most important element. And after looking at the contents category of the Child Welfare Act, the results in order are as follows: "raffic safety"; "Health and hygiene management, including the prevention of contagious diseases and drug abuse"; "Safety measures against disasters"; "Precaution and prevention of disappearance and abduction"; and "Prevention of sexual violence and child abuse." Second, there were many safety education activities in accordance to chronological age (3-to 5-years old). Health and safety by subject, season, and life tools were more frequent. By type of activity, conversation and language activity, fairy tales, and plays were the most common activities. Conclusion/Implications: This suggests the need to systematically plan safety education content through a program that links safety-related laws and elements related to the Nuri curriculum in child care centers.

• Journal of Information Technology Applications and Management
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• v.26 no.2
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• pp.27-40
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• 2019

As reliance on information and communication becomes widespread, a variety of information dysfunctions such as hacking, viruses, and the infringement of personal information are also occurring. Korean adolescents are especially exposed to an environment in which they are experiencing information dysfunction. In addition, youth cybercrimes are steadily occurring. To prevent cybercrime and the damage caused by information dysfunction, information security practices are essential. Accordingly, the purpose of this study is to discuss the factors affecting the information security practices of Korean youths, considering information security education, perceived severity, and perceived vulnerability as leading factors of the theory of planned behavior. A questionnaire survey was administered to 118 middle and high school students. Results of the hypothesis test show that information security education affects perceived behavior control, and perceived severity affects attitude. Subjective norms, information security attitudes, and perceived behavioral control were found to influence adolescents' practices of information security. However, perceived vulnerabilities did not affect youths' information security attitudes. This study confirms that information security education can help youths to practice information security. In other words, information security education is important, and it is a necessary element in the information curriculum of contemporary youth. However, perceived vulnerability to youth information security threats did not affect information security attitudes. Consequently, we suggest that it is necessary to strengthen the contents of the information security education for Korean youths.

• Journal of the Korean Society of Earth Science Education
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• v.15 no.2
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• pp.224-234
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• 2022

The purpose of this study was to analyze STEAM elements and convergence types that appeared in the creative and convergent activities in elementary school science textbooks, which were converted from the national issuance system to the authorized system in 2022. For this study, 6 elementary school science textbooks for 3rd and 4th graders were selected. And STEAM elements in creative and convergent activities were analyzed by publishers, grade-semesters, and science fields, and the convergence type was analyzed for each publisher. The results of this study are as follows. First, the total frequencies of STEAM elements and the ratios of each element in the creative and convergent activities of textbooks were different for each publisher. However, among the four elements except for science (S) element in all publishers, the tendency to have a high proportion of art (A) element and a very low proportion of mathematics (M) element was common. Second, the higher the number of fused STEAM elements, the lower the rate of appearance in the textbooks in overall. Also the ratio of convergence types of STEAM elements varied by each publisher. Third, the ratio deviations of art (A), technology (T), and engineering (E) elements for each grade-semester were not large, but the ratio deviation of the mathematics (M) element was large. Fourth, technology (T) and engineering (E) elements appeared a lot in the fields of 'movement and energy' and 'material', while art (A) element appeared a lot in the fields of 'earth and universe', 'life', and 'integration'.

• Journal of Korean Home Economics Education Association
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• v.19 no.1 s.43
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• pp.149-162
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• 2007

Fashion industry that is apparel of the latest textile industry become the center and it is universal inclination that addend value of design is high more and our country apparel industry is accelerating change by life culture industry of the high added value center. Differentiation of goods, high added value anger can be required by activation of professional manpower for strengthening competitiveness of domestic apparel field, and it is design to be texture another thing can raise this. Specific education to train able member of society based on these actual conditions grasping society actual conditions in present age that is specialized and diversifies and atomizes should be achieved. Hereupon, we have researched over current education status about domestic textile related courses and come to a conclusion described below. Domestic textile related courses are offering mostly in weaving and staining as major subjects, therefore distinguished character of each university can not be found. However, in comparison of importance between theoretical courses and practical courses, theoretical courses are gradually considered more importantly And the number of courses about commodity and operation is steadily increasing compared to those of design element. Nevertheless, for the concept of creativity as design education ever been pursuing by experiment and practice, we are also required to keep close relationship with industry as well as making efforts to reduce differences between college education and practical business. In addition, textile related colleges also need to be armed with more professional knowledge in odor to provide their students not only with more job opportunities but also with chances for self-development.