• Cartoon and Animation Studies
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• s.37
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• pp.335-360
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• 2014

An infatuation with webtoons is facilitated by the ultra-rapid internet infrastructures and the highest ratio of penetration of smartphones in the world. Recently, the webtoon has been the focus of a new cultural content and its development has been noticed both and home and abroad. This study aims to find the new role of webtoon as a socio-cultural communication media. The webtoon reflects the reality as it is and shows directly and minutely the social problems, even although the other media make it glorified or reduced. We observe the role of webtoon as a new communication media content that can make the place for social discussion within several generations and social stratums, in which the producer and the consumer can communicate directly and immediately. Two webtoons( and ) have been selected for a textual analysis. In two webtoons, we analyse the method of representation of the social problem in the technique of expression and storytelling. This helps us maintain that the webtoon deserves as the socio-cultural communication media and the social problems represented in webtoon must have been evaluated more valuable in a new perspective.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.36 no.2
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• pp.185-196
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• 1991

The rice culture, the most representative farming in humid regions of East Asia, have been playing a decisive role in supplying finance and staple food of the nations. This situation must be formed with exchange of techniques and interests in the matter betwen China, Korea and Japan. Especially Korea was obligated to playa bridge role because of geographical conditions, thereby the situations of agriculture were repeatedly reclaimed, and recovered by changes of cultures during external aggression, and internal disturbances. Thus, it is obvious that development of rice culture and its techniques was being undaunted in Korea. Nevertheless, in history of Korea, the documents of the government on chronicles of the dynasty were plentiful, while they were very poor in countryside and rural communities, so that it is very hard to search the transition process of rice culture and its techniques. Finally, the faming books that were begun editing from the early Chosun dynasty are here divided chronically and examined, and also the interrelationships are compared and discussed here. The objectives of this study were to discuss the following questions？ How were the dryfarming techniques, introduced from the ancient China by the end of Koryo dynasty, established to fit for our situations？ What were the basis for reestablishment of the techniques with originality？ How were they continued and changed through the internal and external wars in the Chosun dynasty？ What were suggested from these continuously results by the end of the Chosun dynasty?

• Applied Chemistry for Engineering
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• v.10 no.1
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• pp.143-147
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• 1999

The present paper describes the solvent extraction behaviors and the mutual separation of Am and Eu by sulphur bearing Cyanex 301 acidic extractant in sodium nitrate solutions. Original Cyanex 301 was not able to separate the Am and Eu because of their similar extraction behaviors. The saponification of commercial Cyanex 301 was performed by small amounts of 8 M NaOH solutions and saponified Cyanex 301 was able to separate of Am from Eu with high selectivity in sodium nitrate aqueous solution. The separation factors ($SF_{Am/Eu}$) were increased with saponified ratio of commercial Cyanex 301, pH of sodium nitrate solution and initial concentration of Eu. To obtain the homogeneous saponified Cyanex 301, heterogeneous saponified Cyanex 301 was treated with addition of octyl alcohol or filtration. The observed $SF_{Am/Eu}$ was 32.3 for the former and 930 for the latter. Finally, the stripping behaviors of Am and Eu were similar and stripping yields showed 96.1% for the 1 M $NaNO_3$(pH=1.3) and 99% for the mixture solution of 0.05 M DTPA and 1.5 M lactic acid.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.20 no.1
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• pp.75-82
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• 2009

In this paper, we proposed a U-shaped broadband RFID tag antenna with a parasitic element operating at UHF band. The proposed tag antenna consists of a U-shaped half wavelength dipole antenna and an inverse U-shaped parasitic element inside the U-shaped dipole antenna. In order to have good impedance matching, the commercial tag chip is attached to the lower center of the rectangular shaped feed. On the condition of VSWR<2, the tag antenna had the measured bandwidth of 4.96 % from 882 to 927 MHz and showed the gain deviation of less than 3.16 dB. On the condition of VSWR<5.8, the tag antenna satisfies the worldwide UHF RFID bandwidth and is showed the gain deviation of less than 5.07 dB. The minimum gain deviation characteristic appears near the center of bandwidth which minimizes variation of gain deviation characteristic with respect to the frequency.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.5
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• pp.1573-1579
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• 2010

In this paper, we studied efficient design of wireless transmission system for unified data transmission in a subway and railway. It is increased that need of broadband multimedia service to make useful environment for users and to support the operation of railway system. High bandwidth is better if we need more services. But, high bandwidth requires more cost at tunnel of subway. And more bandwidth makes received antenna sensitivity bad. So it needs more wireless stations. We deduced best bandwidth for subway wireless transmission system using the cost of installation and efficiency of system. Consequently, we proposed efficient service model for broadband wireless system at a subway. Subway broadband wireless transmission system is testing and extended to province subway. The cost of subway broadband wireless transmission system is saved, because the system can be efficiently designed using proposed service model. Therefore, the effectiveness of it will be expected to be very big.

• Korean Journal of Social Welfare
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• v.56 no.4
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• pp.239-268
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• 2004

This study examined the role of self-construals in marital satisfaction among men and women, and explored how independent and interdependent self-construals contribute to or undermine marital satisfaction. Data were drawn from a self-administered questionnaire study in which 489 married people(aged 25-75) residing in Seoul participated. Path analyses were conducted using Structural Equation Modeling Program, and a goodness of fit of the proposed path model was evaluated. As expected, the positive impact of independent self-construal on marital satisfaction was mediated by self-esteem and clarity of communication, and that of interdependent self-construal on marital satisfaction was mediated by psychological stability and a sense of relational well-being. The direct effects of these two types of self-construal on marital satisfaction were opposite. As predicted, independent self-construal decreased marital satisfaction, whereas interdependent self-construal increased it. All of the direct and indirect effects of independent and interdependent self-construals on marital satisfaction were statistically significant, except the indirect effect of interdependent self-construal as mediated by psychological stability. The goodness of fit indexes of the path model indicated that the model was acceptable. However, the results of separate path analyses for men and women showed that some of the effects of self-construals on marital satisfaction differed by gender. Based on these results, implications for clinical social work practice were discussed.

• Korean Journal of Family Social Work
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• no.62
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• pp.71-102
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• 2018

The purpose of this study is to enrich our understanding of the family utilizing childcare by grandmothers and the elderly women by examining the experience of grandmothers who refused to support raising their grandchildren. The researcher focused on grandmothers who have been in charge of caring the family in the main and tried to explore the reasons for their decision not to take care of their grandchildren. For the purpose, Research participants were seven elderly women who have refused raising of their grand-children. Data were collected by in-depth interview and analyzed based on the phenomenological method. As results, it turned out that the elderly women refused caring of their grandchildren due to the burden of parenting and the rejection of an extended mother role, and the fear of family conflicts, but they felt sorry about their refusal of a request for caring support from their adult children. Second. these decisions caused various dynamics of the family members, and they were experiencing psychological difficulties. Third, elderly women perceived raising of grandchildren as a task of adult children or a problem for which the society should be accountable, and felt that the family and the society have shifted the responsibility to them. This research result confirms that a new generation of the elderly women have emerged who have different viewpoints on caregiving. It also presents a necessity to reflect the viewpoints of elderly who are mainly concerned when establishing a policy of caregiving. Based on this finding, this study also presents implications regarding support for family utilizing childcare by grandmothers and support for the elderly women.

• Journal of Digital Convergence
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• v.16 no.11
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• pp.57-67
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• 2018

The purpose of this study is to examine the issues of school arts & culture education policy in Korea, using the four dimensional model of Cooper, Fusarelli, & Randall(2004). Research method is literature analysis, the accumulated policy documents and academic papers were used as the basis data. As a result, the followings are required for effective policy outcome: From the normative dimension, overcoming the pursuit of national growth ideology and bureaucratic rationality; from the structural dimension, securing of practical forms and content through the reform to the teacher mandate system in curriculum operation; from the constituentive dimension, clear division of roles among members through the change of awareness about arts & culture education; and finally from the technical dimension, rational allocation of resources based on firm educational criteria. Building upon the results, promotion of basic academic research, accepting the opinions of arts & culture education parties concerned, expansion of opportunities for cultural art experience of teachers, building up the integrated arts & culture education teacher training system, the reorganization of the teacher training system, and raising the professionalism of teaching artists.

• (The)Study of the Eastern Classic
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• no.59
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• pp.183-211
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• 2015

This paper is to clarify the literary value of sino-korean poems interposed in Changseongamuirok. As the author of Changseongamuirok is thought to be a person with considerable knowledge of sino-korean literature, the sino-korean poems interposed in Changseongamuirok can be the clue to examine his literary ability. Furthermore, evaluation on the sino-korean poems interposed in Changseongamuirok can have the verification of Changseongamuirok's literary value and of the author's ability to create novels and to compose literary pieces be possible, and is thought to help determining who wrote Changseongamuirok. The sino-korean poems interposed in Changseongamuirok is not necessary parts for composition or development of the entire piece but additional parts for explaining and verifying characters and situations. Functions and roles of the interposed sino-korean poems are indeed very limited, but it is thought that the reason the author interposed such sino-korean poems into the piece is that those poems perform functions more than superficial limited ones. When the composition of Changseongamuirok and the literary achievement of its interposed sino-korean poems are examined, it can be thought that the author of Changseongamuirok achieved the level of professional novel writer. From the point of view, it can be said that Changseongamuirok was written in the time closer to the $19^{th}$ century than to the $17^{th}$ century and that the author also had literary and narrative creativity with considerable sino-korean literary ability. Such an author adopted sino-korean poems since he thought those interposed sino-korean poems took important roles for strengthening novelistic value and literary excitement. Further and deeper interests in and researches on sino-korean poems interposed into novels of Joseon dynasty period are expected.

• Journal of Life Science
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• v.32 no.2
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• pp.142-147
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• 2022

Oxysterols are known to be involved in the physiopathology of atherosclerosis. Since 7-ketocholesterol (7-KC) is found in large amounts in oxysterols and in atherosclerotic plaque, the study on how 7-KC may affect monocyte differentiation induced by phorbol myristate acetate (PMA) in the monocytic cell line, THP-1, is essential. 7-KC induced a dose-dependent reduction in cell proliferation without inducing cytotoxicity, and the substantial staining of Nile red demonstrates the increased absorption of intracellular lipids. Although 7-KC itself did not increase cell adhesion, it markedly decreased the adhesion of cells treated with PMA. Furthermore, by observing the effect of 7-KC on phagocytosis using fluorescent-labeled latex beads, 7-KC's ability to abolish phagocytosis in PMA-stimulated macrophages was illustrated. The effect of 7-KC on the expression of selected protein markers on the process of differentiation induced by PMA in THP-1 cells was also examined. 7-KC inhibited expression of ICAM-1, CD11a, SR-A1, and SR-B2 (CD36) in PMA-stimulated THP-1 cells. Conversely, 7-KC drastically increased the expression of SR-D1 (CD68)in PMA-stimulated THP-1 cells. In conclusion, these results suggest that 7-KC modulates monocyte differentiation and activation via the intracellular accumulation of lipid droplets.