• Journal of Digital Convergence
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• v.14 no.3
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• pp.55-62
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• 2016

Today, demand for job training of married immigrants is increasing. This research aims to propose developmental Edu-Tech based on the demand for education contents and the characteristics of multicultural family. Based on analysis such as FGI(focus group interview) and expert interview, this paper presents a four methods for development of EduTech for multicultural people, such as language skills, the recommendation technology of customized training contents, contents design based on gamification and user experience design. This research contributes to the direction of the method to use EduTech as a tool for gaps in education and welfare state.

• The Journal of Society for e-Business Studies
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• v.17 no.2
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• pp.149-163
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• 2012

Logistics systems provide their service to customers by coordinating the resources with limited capacity throughout the underlying processes involved to each other. To maintain the high level of service under such complicated condition, it is essential to carry out the real-time monitoring and continuous management of logistics processes. In this study, we propose a method of estimating the service completion time of key processes based on process-state information collected in real time. We first identify the factors that influence the process completion time by modeling and analyzing an influence diagram, and then suggest algorithms for quantifying the factors. We suppose the container terminal logistics and the process of discharging and loading containers to a vessel. The remaining service time of a vessel is estimated using a decision tree which is the result of machine-learning using historical data. We validated the estimation model using container terminal simulation. The proposed model is expected to improve competitiveness of logistics systems by forecasting service completion in real time, as well as to prevent the waste of resources.

• KIISE Transactions on Computing Practices
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• v.21 no.1
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• pp.94-99
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• 2015

With the recent machine learning paradigm of using nonparametric Bayesian statistics and statistical inference based on random sampling, the Dirichlet distribution finds many uses in a variety of graphical models. It is a multivariate generalization of the gamma distribution and is defined on a continuous (K-1)-simplex. This paper presents a sampling method for a Dirichlet distribution for the problem of dividing an integer X into a sequence of K integers which sum to X. The target samples in our problem are all positive integer vectors when multiplied by a given X. They must be sampled from the correspondingly gridded simplex. In this paper we develop a Markov Chain Monte Carlo (MCMC) proposal distribution for the neighborhood grid points on the simplex and then present the complete algorithm based on the Metropolis-Hastings algorithm. The proposed algorithm can be used for the Markov model, HMM, and Semi-Markov model for accurate state-duration modeling. It can also be used for the Gamma-Dirichlet HMM to model q the global-local duration distributions.

• Journal of the Korean Solar Energy Society
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• v.31 no.1
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• pp.68-77
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• 2011

The concern of green building has been increased with an environmental problem or a rising oil price by industrialization. Therefore offices, schools and some buildings are expected to acquire the green building certification increasingly, but the information such as a process of green building certification, the state of certificated buildings, a score as specific clauses on green building certification is to seek. For not only school facilities make an effect to an student's learning achievement, but is the place where adolescents in a period of growth almost spend their life, eco-friendly school facilities is absolutely required. For this reason, systematizing the information related with the green building certification is to be needed in school field as well Therefore the effort to systematize certification management of eco-friendly school and provide information of certificated building, certification application procedure and sources related with certification for convenience is needed. Also reference material to decrease an inefficient time and expenses and to systematize certification evaluation is be able to beneficial. On the study, for such as the purpose above-mentioned, as the appraisal standard with 12 selected schools randomly is arranged. Based on the assessed scores table, features or something in common as a cause of the score change between preliminary and main certification is to be classified and anaylized.

• The Journal of the Korea institute of electronic communication sciences
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• v.15 no.2
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• pp.349-356
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• 2020

This paper introduces the implementation of a driver's condition warning system using eye aspect ratio to prevent a car accident. The proposed driver's condition warning system using eye aspect ratio consists of a camera, that is required to detect eyes, the Raspberrypie that processes information on eyes from the camera, buzzer and vibrator, that are required to warn the driver. In order to detect and recognize driver's eyes, the histogram of oriented gradients and face landmark estimation based on deep-learning are used. Initially the system calculates the eye aspect ratio of the driver from 6 coordinates around the eye and then gets each eye aspect ratio values when the eyes are opened and closed. These two different eye aspect ratio values are used to calculate the threshold value that is necessary to determine the eye state. Because the threshold value is adaptively determined according to the driver's eye aspect ratio, the system can use the optimal threshold value to determine the driver's condition. In addition, the system synthesizes an input image from the gray-scaled and LAB model images to operate in low lighting conditions.

• Journal of The Korean Association For Science Education
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• v.33 no.5
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• pp.981-994
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• 2013

This study aims to examine two hypothetical models for the variables of students' environmental perspective. First hypothetical model is the mediating role of recognition and familiarity between aesthetic and negativistic perspectives. Second hypothetical model is the separate path from humanistic to dominionistic perspectives. One hundred four tenth grade students participated in this study. We used Pearson correlation, partial correlation, and path analysis to examine the fitness of hypothetical models. The findings showed that the mediating role of recognition and familiarity between aesthetic and negativistic perspectives were statistically accepted. To prevent students' bias for fancy or gross animals, the learning (for instance, recognition and familiarity) may play role in reducing the bias. Second, there were two differential paths from humanistic to dominionistic perspectives (ecologistic-naturalistic path and scientistic-utilitarian path). While ecologistic-naturalistic path does not reach dominionistic perspective, scientistic-utilitarian path does reach dominionistic perspective. To prevent students' dominionistic perspective for nature, they need to understand ecologistic-naturalistic minds for the nature.

• Korean Journal of Health Education and Promotion
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• v.20 no.1
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• pp.203-218
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• 2003

In aging Korean society, many elderly people have difficulty in the areas of health, economic insecurity, role-loss(both work & spouse), loneliness, and family conflicts. Above all, retirement from work is one of the most important stressful life events having influences an elderly's persons economic & social activities, mental state, health status, and Lifelong educational programs could help the aged cope with these situations in later life. Health and social welfare are commonly recognized as an important value of life. They also have an effect on each other. Most people agree that the promotion of health and social welfare is to take a short-cut toward achieving well-being. Thus we need to develop a substantially integrated program of lifelong education, before and after retirement, for the promotion of health and welfare. Universities have the advantage of practicing lifelong educational programs because they have more material, intellectual, and human resources than any other educational facilities. As a result, the purposed of this study is to suggest life-long educational programs for promoting both health conditions and the level of social welfare by utilizing an aging center affiliated with a university. Specifically, the developmental courses of pre-retirement, learning in retirement, elder-hostels, and the connection between pre and post-retirement educational programs are proposed in this study.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.24 no.5
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• pp.44-54
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• 2010

Optimal efficiency control of synchronous reluctance motor(SynRM) is very important in the sense of energy saving and conservation of natural environment because the efficiency of the SynRM is generally lower than that of other types of AC motors. This paper is proposed a novel efficiency optimization control of SynRM considering iron loss using multi adaptive fuzzy learning controller(AFLC). The optimal current ratio between torque current and exciting current is analytically derived to drive SynRM at maximum efficiency. This paper is proposed an efficiency optimization control for the SynRM which minimizes the copper and iron losses. There exists a variety of combinations of d and q-axis current which provide a specific motor torque. The objective of the efficiency optimization control is to seek a combination of d and q-axis current components, which provides minimum losses at a certain operating point in steady state. The control performance of the proposed controller is evaluated by analysis for various operating conditions. Analysis results are presented to show the validity of the proposed algorithm.

• Journal of Fisheries and Marine Sciences Education
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• v.28 no.6
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• pp.1614-1628
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• 2016

The purpose of this study was to examine the relationship between the safety awareness and safety practice of international marriage woman in Kimhae and Changwon city. We carried out a questionnaire survey that was targeted at 138 subjects. Data collected were analyzed with SPSS 21.0 statistical program. Analysis methods were t-test, one way ANOVA, Scheffe test, Perarsons correlation coefficient, and multiple linear regression. The results were as follows. First, safety awareness point was an average of 4.10 point which was higher level. Safety practice point was an over intermediate level of an average of 3.23 point. Second, safety awareness had statistically significant difference according to age, year of Korea residence, born Nation, whether or not Korean citizenshilp, monthly income, temper, satisfaction of marriage. Third, safety practice had statistically significant difference according to housing, monthly income, health state, satisfaction of marriage. Fourth, safety Practice had a positive correlation with home safety awareness, traffic safety awareness, fire safety awareness, and emergency care awareness. Therefore, a higher safety awareness results in having a very well safety practice. Fifth, International Marriage Women from Japan had the highest the level in the Safety Awareness and Safety Practice. From now on, two cities should have a major concern for safety education of fire and emergency care. And the safety education based on learning need analysis need to be done substantially.

• The Journal of Korean Association of Computer Education
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• v.9 no.2
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• pp.37-45
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• 2006

Computer education currently executed at middle schools showed problems of system of education curriculum, repetition, and lack of consistent system as a result of analyzing index for information and communication technology curriculum, and related literatures, and most of the education contents have difficulty to nurture logic thinking and problem-solving ability since they are composed mainly of software function learning. Concerning this issue, this study suggests an innovated computer education curriculum with reinforced information ethics field with computer principle, algorithm, and programming, in other words, a corrected and supplemented version of former content system based on computer science guidance cases of ACM computer science curriculum model of USA, computer science curriculum of Florida state, and Unplugged Project(http://www.unplugged.canterbury.ac.nz) judging that introduction of computer science factors are desperate to improve computer education curriculum in middle schools.