• Journal of the Korean School Mathematics Society
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• v.12 no.2
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• pp.309-325
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• 2009

The purpose of the study was to investigate the differences between Korean mathematics textbooks and CPMP textbooks in the view of conceptual network, structure of mathematical contents, instructional design, and teaching and learning environment to explore the implications for mathematics education in Korea. According to the results, Korean textbooks emphasized the mathematical structures and conceptual network, on the other hand, CPMP textbooks focused on making connections between mathematical concepts and corresponding real life situations as well as mathematical structures. And generalizing mathematical concepts at the symbolic level was very important objective in Korean textbooks, but in the CPMP textbooks, investigating mathematical ideas and solving problems in diverse contexts including real- life situations were considered very important. Teachers using Korean textbooks preferred an explanatory teaching method with the use of concrete manipulatives and student worksheet, however, teachers using CPMP textbooks emphasized collaborative group activities to communicate mathematical ideas and encouraged students to use graphing calculators when they explore mathematical concepts and solve problems.

• Korean Journal of Ecology and Environment
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• v.49 no.4
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• pp.320-333
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• 2016

This study was carried out to elucidate the development of unprecedented water-bloom caused by a single species of colonial green algae Eudorina elegans in the upstream area of the Seungchon weir located in the Yeongsan River from late April to May 2013. The Yeongsan River is typically regulated system and the waterbody is seriously enriched by both external and internal sources of nutrients. Seasonal algal outbreaks were highly probable due to various potential factors, such as the excessive nutrients contained in treated wastewater, slow current, high irradiation and temperature, in diatom (winter), green algae (spring) and bluegreen algae (summer). Spring green-tide was attributed to E. elegans with level up to $1,000mg\;m^{-3}$(>$50{\times}10^4cells\;mL^{-1}$). The bloom was exploded in the initial period of the algal development and after then gradually diminished with transporting to the downstream by the intermittent rainfall, resulting in rapid expansion of the distribution range. Although the pulsed-flows by the weir manipulation was applied to control algal bloom, they were not the countermeasures to solve the underlying problem, but rather there still was a remaining problem related to the impact of pulsed-flows on the downstream. The green-tide of E. elegans in this particular region of the Yeongsan River revealed the blooming characteristics of a colonial motile microalga, and fate of vanishing away by the succeeding episodic events of mesoscale rainfall. We believe that the results of the present study contribute to limno-ecological understanding of the green-tide caused by blue-green algae in the four major rivers, Korea.

• The Korean Journal of Archival Studies
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• no.27
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• pp.3-33
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• 2011

Despite the Public Records Management Act in effect for more than 10 years and the various achievements of 'Records management Innovation' made by the former government, records management in Korea still remains unsatisfactory in many fields. Especially one of the main concerns is about the records centers in the public offices failed to work efficiently. There remains lots of so-called ancient regime elements in the records center system, which causes the lack of stability. Divisions of general affairs in the public offices had played main role in records management for more than 50 years since the establishment of the government, and their role was limited to take over some records created and to manage the poor stack room. According to the Public Records Management Act revised in 2007, data center was renamed to records center and it was obliged to place records center under the office of planning management or the office of administration. But records centers have been nevertheless operated at a very formal level in most public offices. It is the real state of affairs that professional records management system interconnecting records office, records center and archives is not achieved. Why is it? This article is an answer to this question. This article attempt to find out on the inner causes such as structure of records center, records management profession, records management methodology, and above all historical background. In addition, it put stress on the necessity of definite separation between records office and records center and assurance of independent operation of records center for the normalization of the records management system. Improvement of methodology including records management process is also of great importance. And the standardization of records management business of the records center is suggested as one of the main tasks on the basis of the accumulation of 'best practices of records management' in the cooperation with the records management community.

• Journal of the Korea Convergence Society
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• v.8 no.12
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• pp.265-274
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• 2017

This paper examines the problems of big data analysis education and suggests ways to solve them. Big data is a trend that the characteristic of big data is evolving from V3 to V5. For this reason, big data analysis education must take V5 into account. Because increased uncertainty can increase the risk of data analysis, internal and external structured/semi-structured data as well as disturbance factors should be analyzed to improve the reliability of the data. And when using opinion mining, error that is easy to perceive is variability and veracity. The veracity of the data can be increased when data analysis is performed against uncertain situations created by various variables and options. It is the node analysis of the textom(텍스톰) and NodeXL that students and researchers mainly use in the analysis of the association network. Social network analysis should be able to get meaningful results and predict future by analyzing the current situation based on dark data gained.

• Journal for History of Mathematics
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• v.25 no.3
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• pp.29-39
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• 2012

As a product of modern proof theory, linear logic is a new form of logic developed for the purpose of enhancing programming language by Professor Jean-Yves Girard of Marseille University (France) in 1987 by supplementing intuitionist logic in a sophisticated manner. Thus, linear logic' s connectives can be explained using information processing terms such as sequentiality and parallel computation. For instance, A${\otimes}$B shows two processes, A and B, carried out one after another. A&B is linked to an internal indeterminate, allowing an observer to select either A or B. A${\oplus}$B is an external indeterminate, and as such, an observer knows that either A or B holds true, but does not know which process will be true. A ${\wp}$ B signifies parallel computation of process A and process B; linear negative exhibits synchronization, that is, in order for the process A to be carried out, both A and $A^{\bot}$ have to be accomplished simultaneously. Since the field of linear logic is not very active in Korea at present, this paper deals only with syntax aspect of linear logic in order to arouse interest in the subject, leaving semantics and proof nets for future studies.

• Journal of Digital Contents Society
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• v.18 no.1
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• pp.79-85
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• 2017

Since Korea started producing original animations targeting children, market of character for children has been led by TV animation with continuous broadcasting and OSMU. With a successful fondation in animation toy industry, its market is expanding to film industry, at the same time, brings positive effect for benefit of domestic animation. Therefore, this study researched viewing rate of children's TV animation and analyzed character storytelling to help foster and grow the direction of future animation characters. For the analysis, I selected 20 animations with high viewing rate and analyzed the storytelling of 95 characters based on their roles. The results of this study are as follows: in children's animation appeared various types of characters helping each other to make the viewer learn socializing. In addition, character's external setting varied depending on its role. Moreover, in the characters' internal setting, the most frequently appeared keyword was leadership, however, their personality keyword varied depending on the role.

• Journal of the Korean Society for Library and Information Science
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• v.49 no.1
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• pp.465-482
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• 2015

This study is a qualitative study on the workplace experience of electronic resource acquisition librarian in university libraries. The purpose of this study is to examine the meaning of their task and roles, new change of their role. For this study, we conducted in-depth interviews with 9 electronic resource acquisition librarian in academic libraries and applied phenomenological research method. As result of analysis, 3 catagories were appeared from 11 themes as data analysis. These catagories were characterized as follows: 'coping with structural problems of the real obstacles', 'enduring of psychological pressure', and 'growing as professional with competency'. It is expected to further study on competency for electronic resource acquisition librarian.

• The Journal of the Korea Contents Association
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• v.16 no.1
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• pp.167-178
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• 2016

This research is to understand the causal relationship between class participation motivation, acting expressiveness and psychological happiness through the class of the college students majoring in acting. For this purpose, the simple random sampling method was used and the college students majoring play and acting in the college located in Seoul and Gyeonggi-do as a sample group and total 499 questionnaires were used. For the questions, 73 questions of which the reliability and validity is examined were used. As for a data processing method, it used the statistical package of IBM STATISTICS SPSS 22 and AMOS 22 and analyzed the results by applying the descriptive statistics analysis, confirmatory factor analysis, reliability analysis and structural equation model. The conclusion of this research is as follows. Intrinsic motivation and extrinsic motivation among the class participation motivation of the college students majoring in acting have a significant effect on all sub factors of acting expressiveness and psychological happiness statically, and a motivation has no effect on it. Both personality and expressive impulse of acting expressiveness have an effect on a psychological happiness, and mobility has no effect on it.

• Journal of Korea Port Economic Association
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• v.28 no.1
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• pp.203-227
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• 2012

Based on the review of the existing studies, this study built the conceptual framework describing the structural relationships among port service quality dimensions(port internal service quality, external service quality, interaction quality), customer satisfaction, customer trust and customer loyalty. In specific, switching barrier was included as moderator in customer satisfaction and customer loyalty relationships. The subjects are the customers who use the Busan New Port. A survey using 317 customers was conducted, Confirmatory factor analysis was conducted to test the validity of the measurement model, and AMOS analysis approach was used to gain important insights into how customer retention in the port business can be ensured. Results in this paper indicate that customer trust and satisfaction are identified as antecedents of the port service quality dimensions. Customer satisfaction positively influences trust. Customer trust and satisfaction positively influence loyalty. Switching barrier positively moderates the relationship of customer satisfaction and customer loyalty. Finally, this study suggests that the implications of these findings and offers directions for future research.

• Journal of Convergence for Information Technology
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• v.8 no.2
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• pp.149-155
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• 2018

The purpose of this study is to create a program that will revitalize as an autonomous person through dialogue training that integrates reason and emotion when the personality formed as a child does not help life and growth of reality. The research method is to analyze the current personality as five ego states and find a way to correct or complement the result. Study results found a way to complement the external ego states shown in the state to self-activation techniques, The inner part is to achieve autonomy through the change of Trinity, the ultimate goal of change of Transactional Analysis(TA) namely, the change of three abilities: self-awareness, spontaneity, and intimacy. This is the ability to use all the resources of an individual to solve problems, or to make recovery look real.