• Journal of Engineering Education Research
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• v.5 no.1
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• pp.77-84
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• 2002

The 18th century Joseon(朝鮮) science philosopher Hong Dae-Yong(洪大容, 1731-83) tried to create his own scientific system, while partially keeping the Eastern view of nature and accepting Western science and technology. Most of all, he confirmed that Western science and technology was based on mathematical principles and accurate observation and wrote a math book, [Juhaesuyong(籌解需用)]. Therefore, we have good reason to call him a mathematician. He produced so many achievements that he can be considered a natural scientist in the late Joseon era; he accepted the Eastern view of nature critically and sometimes refused it. He also suggested new and various scientific thoughts, including an infinite universe theory, on the basis of Western scientific thought. Hong Dae-Yong emphasized the importance of practice. He understood the principle of the Western Honcheonui(渾天儀) and manufactured an alarm clock with a craftsman's help. He was an excellent engineer and he set a personal observatory. Considering the level of scientific technology at that time, it is reasonable to regard Hong Dae-Yong as a 'scientific technologist in the 18th century Joseonera', well equipped as a mathematician, a natural scientist, and an engineer. In conclusion, it is with 'mathematical thinking, creative conception, and practical activities' that Hong Dae-Yong maintained throughout his life that we can set a guide to produce excellent Korean scientific technologists and engineers in the 21st century.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.40 no.6
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• pp.775-781
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• 1995

This study was conducted to find out the variation in some medicinal components of Korean green tea by processing recipe and harvesting time in Bongsan-ri(steamroasted green tea) and Buchun-ri(roasted green tea) area. Total chlorophyll content of green tea grown at Bongsan-ri and Buchun-ri was 293mg% and 275mg% and ratio of chlorophyll a to chlorophyll b was 70:30 and 67:33 respectively. The later harvested one had the higher chlorophyll content but the chlorophyll content of the last harvested green tea at Buchun-ri decreased more sharply. Water-soluble pectin of green tea produced at Bongsan-ri and Buchun-ri was 2.05% and 1.84%, respectively. It also increased at the later harvested ones. Total amino acids content of Bongsan-ri and Buchun-ri tea was 2,156mg% and 1,723mg%, respectively. The later harvested tea showed the remarkably decreased. Caffein and catechins of Bongsan-ri and Buchun-ri tea were 2.03%, 11.52% and 2.62%, 14.05%, respectively, Total free catechins content of Bongsan-ri and Buchun-ri tea was 35.59% and 42.73%, and ester type was 58.09% and 44.47%, respectively. Extracted catechins and caffeins of green tea were increased when extracting water temperature was raised from $65^{\circ}C$ to 85$^{\circ}C$ and leaching time was lengthened from 3min. to 9min. About 89% catechins and 97% caffeins of green tea was extracted by nine minutes soaking in 85$^{\circ}C$ water.

• PNF and Movement
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• v.6 no.3
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• pp.11-18
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• 2008

Purpose : The purpose of this study was to evaluate Influence of Stretching exercise on Flexibility of Trunk and Equilibrium Ability in Post-Adolescent. Methods : Stretching group(n=20), control group(n=20) measured trunk extension ROM, trunk flexion ROM, trunk lateral flexion ROM, and equilibrium ability at pre-intervention, post-intervention in 3 weeks, post-intervention in 6 weeks. Results : Trunk extension ROM, trunk flexion ROM, trunk lateral flexion ROM, and equilibrium ability of stretching group was significantly increased within the intervention period (p<.05). The trunk extension ROM, trunk lateral flexion ROM, equilibrium ability was significantly different among the experimental groups at in 3 weeks and in 6 weeks, but trunk flexion ROM was significantly different at only in 6 weeks(p<.05). Conclusion : In conclusion, it was found stretching exercise can increase Flexibility of Trunk and Equilibrium Ability. stretching exercise need to be applied for Post-Adolescent.

• Journal of the Korean Society for Library and Information Science
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• v.54 no.2
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• pp.435-455
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• 2020

The purpose of this study is to examine the publication, composition, method of composition, and acceptance patterns of JujaDaejeon anthologies edited by Joseon scholars in the Joseon dynasty. When a large amount of JujaDaejeon was published in the 16^th century, anthologies of JujajaDaejeon was compiled, published and learned as a way to understand it. A total of 13 kinds of JujajaDaejeon anthologies were published, including six kinds in the early Joseon period and seven kinds in the late Joseon period. And the composition of main anthologies showed a trend that was supplemented by Jeong Gyeong-se's Jumunjakhae from Lee Hwang's Jujaseojeolyo, and aggregated into Song Si-yeol's Jeoljaktongpyeon(boyu). JujaDaejeon consists of total 3,645 works except for poems. Among them, 1,734 works were selected by 13 anthologies. The theme of a work with a high cumulative number of selections is the virtue and attitude of the king, policy proposals, the appointment of talent, the duty of subjects, criteria for evaluating historical figures, opposition to harmony with Jin and territorial restoration, and academic discussions. This study is expected to be meaningful in the field of the research on the acceptance of the foreign books and acceptance of the Zhu Xi's works in the Joseon dynasty.

• Korean Journal of Social Welfare
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• v.59 no.3
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• pp.229-252
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• 2007

Traditional quantitative approaches to comparative social policy research in welfare state have mostly focused on cross-national variations in social policy. More recently, they have attempted to account for disparities in the local provision of social policy. However, heavily relying on traditional theories of welfare state development (e.g., industrialism theory, power resource approach, and state-centric thesis), most of them seem to have explained the local variation from a central or national perspective, thereby completely ignoring the local perspective. Furthermore, their theoretical bases have been exclusively derived from the social context of post-war era. In tackling these issues, this study aims at localizing and updating the theoretical framework of local welfare policy in the post-industrial age. The framework provided in this study calls for a shift in the theoretical perspective towards more local and new approaches (e.g., new social risks, new public management and intergovernmental relations).

• Clean Technology
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• v.5 no.2
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• pp.69-78
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• 1999

Separation characteristics of cutting oil-in-water emulsions were studied experimentally by using various kinds of flat-type microfiltration and ultrafiltration membranes. For ultrafiltration membranes the permeation behavior of cutting oil emulsions obeys the film model, whereas a significant deviation from the model was observed for ASYPOR microfiltration membranes. The experimental data obtained for all the membranes showed that the effect of operating pressure on the permeation flux of oil-in-water emulsions is not very significant. At low transmembrane pressures the permeation flux decreased gradually with increasing filtration time, whereas the permeation flux at high transmembrane pressures decreased steeply for early filtration time. However, every flux eventually reached a constant value that depends only on the applied transmembrane pressure. For the hydrophobic polycarbonate microfiltration membrane the permeation flux increased with the filtration time. The critical permeation pressures were also determined from the data obtained from unstirred cell experiments.

• Journal of the Korean Geographical Society
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• v.44 no.3
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• pp.282-300
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• 2009

This paper attempts to focus the ways in which Seoul as an urban space can be read and interpreted from gender perspective, assuming Seoul as a cultural text which represents modernity and post-modernity. Drawing on discussions of urban sociology and human geography which have analyzed the relationship between material spaces and social subjects, this paper explores the gendered segregation and representations of space in Seoul which has been constructed through the process of modernization. The framework of spatial interpretation of Seoul, concentrating on imageablity and legibility, consists of three dimensions; gendered division of labour and sphere, dichotomy of representations along with femininity and masculinity, and the ways of interlocking between modernity and post-modernity. In this paper, 'fl$\check{a}$nerie', Benjamin's method of interpretation of urban culture and the way of seeing with 'speculum' of Irigaray are adopted as metaphoric methodologies. It is an attempt to develop a new methodology to analyze and interpret urban space from gender-cultural perspective.

• Journal of the Korean Society for Library and Information Science
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• v.58 no.2
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• pp.199-223
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• 2024

This study presents book curation services as one of the ways to establish the social role and status of public libraries in a changing social environment. It aims to identify the quality factors that influence user satisfaction and the intention to continue using public library book curation services. For this purpose, the quality factors were limited to information quality through a literature review on curation services in libraries and various fields, from which specific factors were extracted. A questionnaire survey and statistical analysis were then conducted among public library users. The results showed that among the information quality factors, variety and interestingness affect user satisfaction, while discoverability and usefulness impact both user satisfaction and the intention to continue using the services. Based on these findings, we suggest that public libraries should offer book curation services that allow users to discover new information and select themes that are engaging and interesting, and provide information about various genres and types of books.

• Journal of the Korean Home Economics Association
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• v.37 no.5
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• pp.61-84
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• 1999

The purpose of this study is to understand the context of cosumers' lives in Korea with a narrative analysis method. The epistemological orientation of eh narrative analysis is Interpretivism, which blends the two polar philosophical perspectives, Empiricism and Rationalism, and includes Narrotology, Hermeneneutics, Semiotics, and Structural Criticism. Narrative analysis takes as its object of investigation the story itself. This study collects eleven narrative plots from four housewives, into which Labov's structural approach is applied. This study shows clearly that the socio-cultural environment in which consumers live has strong influence on their consumption behavior and also reveals that narrativization tells not only about past actions but how individuals understand those actions, that is, meaning.

• Journal of Korea Entertainment Industry Association
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• v.5 no.1
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• pp.65-72
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• 2011

The major purpose of this study is to investigate the influencing factors toward continuance intention in e-learning services. For this purpose, we introduced Post Acceptance Model(PAM) proposed by Bhattacherjee(2001) as basic analysis framework. Based on the relevant literature reviews, this study posits seven characteristics, that is, contents quality, interactivity, expectation confirmation, perceived ease of use, perceived usefulness, user satisfaction, and continuance intention as key variables to describe the post acceptance behavior in e-learning services. Data have been collected from users who have used e-learning services and the research model and hypotheses were tested through covariance structural model analysis. The results of this study are summarized as follows. First, contents quality, interactivity, and expectation confirmation have positive influence upon perceived usefulness. Second, contents quality, interactivity, expectation confirmation, and perceived ease of use have positive influence upon user satisfaction. Lastly, perceived usefulness have positive effect on the user satisfaction, and perceived usefulness and user satisfaction positively related to continuance intention in e-learning services. The findings have significant implications for e-learning service providers and academic researchers.