• Journal of Korean Society of Industrial and Systems Engineering
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• v.18 no.34
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• pp.51-60
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• 1995

The key competition factor of manufacturing industries has progressively changed from cost to quality and time. Recently, the manufacturing environments more rapidly change than before. So, many companies want to introduce a advanced manufacturing system like CIMS to meet various user's needs and short delivery. But there is a considerable gap between the decision to invest and the achievement of promised benefits. Managers, generally, cannot afford CIM invesment unless they can determine beforehand that CIM will work in thier company and that will provide a coherent strategy and satisfactory return on investment In many cases, it is impossible to justify CIM investment by only economical analysis. Decision making problems like CIM investment are of a multiple objective nature. So, decision making process and multiattribute utility function are very useful methods to evaluate CIM justification In this paper, we described the key functions of CIM justification evaluation using IDEF methodology and developed the applicattion procedure of DMP and MUF method for CIM justification.

• Korean Journal of Computational Design and Engineering
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• v.14 no.3
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• pp.176-185
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• 2009

Modern manufacturing systems consist of highly automated manufacturing devices, and they are controlled by complicated PLC programs. To make sure the achievement of the control objectives of a manufacturing system, it is very important to monitor the dynamic system behaviors of the manufacturing system. In this paper, we propose a monitoring methodology of a PLC program based on the Software In the Loop Simulation(SILS), which makes use of the time gap information between PLC signals. The errors relevant with PLC signals can be found using the proposed methodology, comparing a normal PLC signal trajectory with a target PLC signal trajectory. The proposed methodology has been implemented and tested with simple examples.

• International Journal of Advanced Culture Technology
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• v.12 no.2
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• pp.190-195
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• 2024

This study aimed to investigate types of emotional experiences that college students undergo, particularly those affecting learning motivation and academic performance. To this end, six college students residing in Seoul, South Korea participated in a series of 'focus-group interview (FGI)' sessions in which in-depths discussions took place. The researcher attempted to draw the participant students' opinions and ideas as they made interactions with each other. Three participants were placed in each of two groups, and each group had approximately 90-minutes-long sessions. The results showed that positive emotions, such as joy and enthusiasm, can increase learning motivation and academic achievement, while negative emotions such as anxiety and stress can hinder them. The findings also highlight that students actively employ coping strategies to manage negative emotions. Moreover, the study underscores students' desire for improved emotional support from instructors, indicating a gap between their expectations and the actual emotional care provided in educational settings. Relevant issues are discussed for future suggestions.

• Journal of Gifted/Talented Education
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• v.18 no.2
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• pp.239-264
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• 2008

The gap in academic achievement owing to entrance age in elementary school has been used as important basic data to formulate policies on school entrance system and other educational policies. Other countries have made further studies to prove the effect on academic achievement of age gap between students in the same grade. This study identified the clear difference in a component ratio in the participants and the successful candidates based on the by entrance age during the entrance examination of the "K" science education center for the gifted. Also, this study analyzed the difference in success in an examination depending on the season of birth between the participants and the successful candidates during the entrance examination. It also compared the birth ratio by season of each group including common students. Some preceding studies with common or backward students show the result that students who entered the school in full age have higher level of academic achievements than students in younger age. But the results of this study proved that gifted students who entered the school in full age did not have a high level of academic achievements. Like these studies, this study show the result that school entrance age works as an important factor of selection of gifted students. Students who entered the school in full age entered much more the "K" science education center for gifted students than students in young age.

• The Journal of the Korea Contents Association
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• v.9 no.4
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• pp.372-381
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• 2009

Recently, the number of children of multi-cultural family is increasing and the achievement gap between city and farming village is getting larger. It will be alternatives to develop e-learning contents which students can study by themselves where there are internet connected computers. As one of the solutions to improve students' writing ability, we developed animation e-learning contents about manuscript paper usage and sentence signs. As a result of applying e-learning contents to students, we can make sure that e-learning contents are more effective than existing means such as workbook-centered education and web contents persuaded by text in academic interesting, satisfaction and achievement. Consequently, we offer this training methods as alternatives which can increase academic performance for multi-cultural family and Korean students who are behind the other students in language ability.

• Journal of the Korean School Mathematics Society
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• v.10 no.3
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• pp.353-367
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• 2007

The purpose of this study was to examine what errors students made in solving word problems with figures and to compare the problem-solving abilities of boys and girls for each type of word problems with figures. It's basically meant to provide information on effective teaching-learning methods about world problems with figures that were given the greatest weight among different sorts of word problems. The findings of the study were as fellows: First, there was no difference between the boys and girls in the types of error they made. Both groups made the most errors due to a poor understanding of sentences, and they made the least errors of making the wrong expression. And the students who gave no answers outnumbered those who made errors. Second, as for problem-solving ability, the boys outperformed the girls in problem solving except variable problems. There was the greatest gap between the two in solving combining problems. Third, they made the average or higher achievement in solving the types of problems that were included much in the textbooks, and made the least achievement in relation to the types of problems that were handled least often in the textbooks.

• The Journal of the Korea Contents Association
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• v.18 no.5
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• pp.303-310
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• 2018

The purpose of this study was to analyze future student competency based elementary Korean language classes to examine how they can be combined with current classes based on achievement criterion. Focus Group Interviews (FGI) were conducted with elementary teachers to find current lesson plans and design strategies, and to analyze their perception of future student competency proposed by Ministry of Education. After competency based lesson design was combined with regular class and implemented, teachers were finally interviewed for feedback of the classes. This study found problem issues such as conception of core competencies, gap between student achievement and competency accomplishment, student evaluation system as well as administrative support for execution. This study concluded that teacher training and systematic support should be enforced to ensure teachers competencies before demanding strategically.

• Information Systems Review
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• v.26 no.2
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• pp.185-203
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• 2024

This study empirically explores the influence of gamification elements and privacy concerns on users' intention to use fitness apps, based on the technology acceptance model (TAM). This research classifies gamification in fitness apps into three categories: achievement-related elements, social-related elements, and immersion-related elements. Although previous research investigated the gamification of fitness apps, few studies combined the impact of gamification with privacy concerns. Considering the significant amount of sensitive personal data collected by fitness apps, we recognize the importance of data privacy and aim to address this gap in research. To achieve this goal, we collected and analyzed data from 187 Korean fitness app users through an online questionnaire. The results confirm the highly significant influence of perceived ease of use, perceived usefulness, and achievement-related gamification elements. Social-related gamification elements, immersion-related gamification elements, and privacy concerns however show insignificant results for the intention to use fitness apps in the Korean market. Location and time limit the generalizability of this study; however, the findings of this study nonetheless offer valuable insights for practitioners and developers to enhance the design and development of their applications.

• International Commerce and Information Review
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• v.16 no.4
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• pp.263-280
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• 2014

The dynamics of global alliance networks can be analyzed in numerous ways. We have chosen to approach it in terms of alliance stability. Although increasing academic attention has been devoted to the alliance dynamics field, the majority of prior research has neither contributed to a coherent knowledge foundation(an academic gap) nor provided adequate answers to managerial questions(a managerial relevance gap). We respond to their call for research by developing an integrated process model that integrates various studies on alliance stability. The primary tasks were (1) to characterize and conceptualize the stability concept to fill the academic gap, and (2) to identify critical endogenous factors underlying alliance stability over the different developmental stages to fill the managerial gap. Knowledge acquired in this paper is also expected to offer alliance managers and practitioners some valuable implications as they strive for stable and successful collaborative relationships. As one of the basic arguments, stability has been viewed as a necessary condition for the achievement of collaborative objectives. When firms form, implement, adjust and evaluate their alliances, they should have the goal of stability in mind. At the same time, management should be in a position to determine the specific actions needed for stability at any given moment in the alliance's lifetime.

• Journal of the Korean Society for Library and Information Science
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• v.57 no.3
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• pp.231-248
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• 2023

The purpose of this study is to trigger a discussion on the educational gap between regions in school library resources. To this end, differences and correlations between other resources invested in the school library and output results were analyzed according to manpower allocation. There was a positive correlation between the number of books, the budget, the number of seats, the number of borrowed materials, and the number of students. It was analyzed that manpower allocation had a negative correlation with the number of subjects in which the ratio of students, the lowest grade in the achievement evaluation, was more than 1/2. As a result of examining the staffing according to the 「School Library Promotion Act」 by regional characteristics, it was found that the allocation rate was statistically significantly higher in the order of metropolitan area, and provincial unit. Depending on the regional characteristics, there were differences in net asset per household as well as differences in school library manpower assignment rates. In contrast, the large cities with relatively affluent school library manpower assignment rates were found to be higher. Therefore, based on the survey contents of this study, it was emphasized that the manpower stipulated in the 「School Library Promotion Act」 should be deployed as soon as possible even in relatively poor areas to bridge the educational gap between regions.