• KIEAE Journal
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• v.13 no.3
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• pp.61-69
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• 2013

The experiment on thermal characteristics of on-dol systems were carried out to apply to New Han-ok's heating system. Change of surface temperature varied with heating times, distribution of surface temperature, radiation property were surveid on four on-dol system in laboratory conditions. Followings are results. 1) "Hwang-to unit" was most favorable condition of the distribution of floor surface temperature. And the results from reaching time to thermal comfort temperature of on-dol system showed that "Hwang-to unit" was the most favorable to continuance of floor temperature. 2) There were a little difference in surface floor radiations of $30^{\circ}C$ for three wet on dol-systems. 3) It was suggested that "Hwang-to unit" is the most appropriate to floor heating system of new han-ok considering eco-friendship and continuance of floor temperature in intermittent heating condition.

• Proceedings of the PSK Conference
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• 2003.04a
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• pp.160.2-161
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• 2003

Hwang Chil (Dendropanax morbifera Lev.) belongs to Aralia elata group. This plant is only found in Korea and is considered to be along with ginseng. The physiological activities of it have been reported as having scavenging effect on oxygen free radicals and anti-carcinogenic effect. As most of the anti-oxidants were effective on protecting hepatotoxicity from alcohol, hard tissues restoring and skin whitening, the effectiveness of Hwang Chil extracts was screened. (omitted)

• Journal of the Korean Operations Research and Management Science Society
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• v.6 no.1
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• pp.75-82
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• 1981

This paper considers urban emergency service systems that dispatch vehicles (facilities) from fixed bases with the objective of finding an optimum allocation of emergency facilities. A case study of fire station problem of Seoul city is conducted to analyze the deployment of fire-fighting resources and develop a class of improved deployment strategies with Parameteric Allocation Model (P.A.M.). The study shows a long term plan leading to balanced fire protection for most fire hazardous districts as well as low alarm districts.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2008.04a
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• pp.317-320
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• 2008

Smoke is recognized as the major killer in fire situation. smoke often migrate to building locations remote the fire space, threatening life and elevator shafts frequently become smoke-logged, there by blocking evacuation and inhibiting rescue and fire fighting. It is the aim of this study to investigate and analyze the research trends of smoke movement in Fire.

• Proceedings of the KSRS Conference
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• 2004.10a
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• pp.140-143
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• 2004

The west coast of the Korean Peninsula is famous for its large tidal range (up to 9 m) and vast tidal flats. With comparison the sedimentary environments of open and close tidal flat using remote sensing, we select Kanghwa tidal flat and Hwang-Do tidal flat in Cheonsu Bay. Prior to surface sediment discrimination using remote sensing, sedimentary environments including intertidal OEM, hydraulic condition, and relationship between grain size and various tidal condition are investigated. Remote sensing has the potential to provide synoptic information of intertidal environments. The objectives of this study are: (i) to generate an intertidal digital elevation model (OEM) using the waterline method of Lansat TM/ETM+, (ii) to investigate the tidal channel distribution using texture analysis, and (iii) to analyze the relationship between surface grain size by using in-situ data and intertidal OEM and tidal channel density by using high-resolution satellite data such as IKONOS and Kompsat EOC. The results demonstrate that satellite remote sensing is an efficient and effective tool for a surface sediment discrimination and long term morphologic change estimation in tidal flats.

• Journal of Korean Society of Water and Wastewater
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• v.37 no.5
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• pp.281-288
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• 2023

This study was performed to evaluate the pollutants removal characteristics of two types of RBFs(Riverbank filtration, Riverbed filtration) intake facilities installed in Nakdong River and in Hwang River respectively. The capacity of each RBF is 45,000 m³/d for riverbank filtration intake facility and 3,500 m³/d for riverbed filtration intake facility. According to data collected in the riverbank filtration site, removal rate of each pollutant was about BOD(Biochemical Oxygen Demand) 52%, TOC(Total Organic Carbon) 57%, SS(Suspended Solids) 44%, Total coliforms 99% correspondingly. Furthermore, Microcystins(-LR,-YR,-RR) were not found in riverbank filtered water compared to surface water in Nakdong River. DOC(Dissolved Organic Carbon) and Humics which are precursors of disinfection byproduct were also reported to be removed about 59% for DOC, 65% for Humics. Based on data analysis in riverbed filtration site in Hwang River, removal rate of each contaminant reaches to BOD 33.3%, TOC 38.5%, SS 38.9%, DOC 22.2%, UV254 21.2%, Total coliforms 73.8% respectively. Additionally, microplastics were also inspected that there was no obvious removal rate in riverbed filtered water compared to surface water in Hwang River.

• Korean Journal of Pharmacognosy
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• v.33 no.3 s.130
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• pp.182-186
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• 2002

The Coptidis rhizoma is known for containing protoberberine alkaloids. Berberine, coptisine and palmatine are the major constituents of protoberberine alkaloids. The alkaloids were isolated and determined by forming complex compounds from Coptidis rhizoma in preparation I(Sam-Hwang-Sa-Sim-Tang) and II(Hwang-Ryen-Tang). For the determination of these alkaloids, a new spectrophotometric method was developed with a simple and selective sample clean-up using thiocyanatocobaltate[II] complex compound ion. The absorbance of alkaloidal complex compounds in l.2-dichloroethane solution was measured at 625 nm. Calibration curve for the alkaloids isolated from Coptidis rhizoma was linear over the concentration range of 0.2-0.3 mg/ml. The method was proved to be rapid, simple and reliable for the isolation and the determination of the alkaloids in Coptidis rhizoma preparation I and II.

• Journal of English Language & Literature
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• v.54 no.4
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• pp.579-597
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• 2008

This article discusses David Henry Hwang's M. Butterfly as a suggestive text for examining Western masculinity in crisis in the post-imperialist age, in which territorial imperialism is no longer valid. Previous scholarship on M. Butterfly has centered around the interlocking dynamics of imperialism, racism and sexism. Such critical attentions focus on how Hwang deconstructs racialized significations of the East and the West. In these discussions, the issue of gender is often addressed merely as a trope to represent the power relations between the East and the West. As such, gender as well as sexuality is highlighted as the very source of subversion of the power relations. My discussion departs from a critique of the gendered trope of the East and the West, highlighting a postmodern agent, the allegedly feminized character Song Lining: a Chinese actor who passes for a woman for political purposes in postcolonial China. Remaining an "inappropriate/d other" in the gendered imperialist discourse, Song becomes an emergent subject, who is capable of playing gender ambiguity for reclaiming a devalued identity, that of homosexual Asian man. Discussing how the central character Rene Gallimard's masculine identity is constructed in a cross-cultural space and how it evolves, I also argue that Gallimard's melancholic death signifies a historical unsustainability of imperialist masculinity in the postmodern/postcolonial age since World War II.

• Journal of Christian Education in Korea
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• v.64
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• pp.369-407
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• 2020

This article studies the spiritual formation of modern Christian women in the cases of Hwang Ester and Eo Yoon-Hee. I take McGrath's definition of Christian spirituality as my starting point, namely, "Christian spirituality concerns the queset for a fulfilled and authentic Christian existence, involving the bringing together of the fundamental ideas of Christianity and the whole experience of living on the basis of and within the scope of the Christian faith." I center the terms of Christian existence and whole experience of living from McGrath's text, and understand Christian existence to relate to being a disciple and whole experience of living to relate to being a citizen. This study looks at the life history of Hwang Ester and Eo Yun-Hee, and looked at the spirituality of these women with the focus on discipleship and citizenship. Thus, I find that, for modern Christian women, becoming a disciple is inseparable from becoming a citizen. Also, I can see that, in modern women's spirituality, being a true disciple leads to becoming a right citizen.

• The Journal of the Convergence on Culture Technology
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• v.4 no.3
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• pp.159-163
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• 2018

This study describes Brownian motion of human narrative in physiological perspective. The purpose of this study is to investigate how these functions appear in literary works and to apply them to the practice of literary therapy in the future. Hwang Jin-yi's sijo is the first to cut off the longing. Then, It fold that longing and keep it. Finally, It is to unfold those longing. In this folded and unfolded movement, this Sijo is vibrated. This is the Brownian motion of Sijo. In this, the Sijo completes endless love. Using the Brownian motion of these literary feelings, it seems that literary therapy can form conditions of human physiological healing.