• Journal of the Korean Society of Costume
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• v.61 no.2
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• pp.32-46
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• 2011

The study researched the characteristic of helmet and armor reflecting Joseon Dynasty by focusing on the helmet and armor appearing in dramas, the Tear of Dragon and King Sejong, whose common point is the historical background, the early Joseon Dynasty, among the historical dramas, which are manufactured on the basis of historical person or age. First, the helmet and armor appearing in historical drama was reproduced on the basis of historical record depending on age. In the early Joseon Dynasty, helmet was classified into cheomju and wonju and armor was classified into chalgap, swaejagap, gyeongbeongap, dujeonggap and dudumigap. In drama, the Tear of Dragon and King Sejong, for helmet, cheomju and wonju were used and for armor, chalgap, dujeonggap and dudumigap, whose type and manufacture method were similar to that of historical record, were reproduced. Second, the helmet and armor appearing in historical drama searched for function. In drama, the Tear of Dragon, rather than heavy iron, plastic and textile were used and the metal scale inside armor was removed. In drama, King Sejong, the weight of armor was decreased by removing the metal scale inside armor and easy wearing was secured by using velcro. Third, the helmet and armor appearing in historical drama expressed various dramatic interpretations. In drama, the Tear of Dragon, the same color as that of armor was adopted for helmet to provide stable and unified feeling. Visually splendid display was added to armor by matching powerful prime color and glossy metal. In drama, King Sejong, modem sense was added to helmet and armor by actively using pastel color reflecting modem fashion.

• Journal of Korean language education
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• v.29 no.3
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• pp.55-82
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• 2018

The purpose of this study is to analyze Language Achievement tests of King Sejong Institute which have been carried out from 2014 to 2017. Language Achievement tests of King Sejong Institute has been developed since 2014, the test is operated in 99 institutes of 46 countries now (As of first half of 2017) When this study analyzes the result of evaluation for 4 years, it was found that the number of nations enforcing the evaluation, institutes and examinees has continued its growth. In the early stage of evaluation, the examinees from Asian regions take up majority but the recent proportion of European region is getting bigger gradually. In addition, only beginner level evaluation was carried out in the early stage but recently its range is expanded to the intermediate level. This Language Achievement tests of King Sejong Institute can be utilized very valuable data which can diagnose the present and future of oversea Korean language education. In order to elevate public confidence as Korean language achievement test, this study suggested, first, increase the feedback effect of evaluation, second, establish the learning history information of examinees along with the test scores, third, conduct the training for evaluator in order to increase the validity and reliability of the evaluation, fourth, seek to utilize the results of the achievement test.

• Journal of architectural history
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• v.25 no.4
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• pp.19-29
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• 2016

This study is based on the 15th century's architecture Mohwagwan and Taepyeonggwan and the architects behind it. The results were as follows: First, inline with Ming dynasty's protocol, the King of Joseon marched with honor guard in front of his people. Therefore, the Joseon dynasty needed to match space was implemented and result in Mohwagwan and Taepyeonggwan. Second, King Taejong founded Mohwaru to share the role with Taepyeonggwan. He appropriately utilized Mohwaru as a place in manners before people enter the Seoul city wall. And He organized this architecture on the level of the palace. Third, Pak Jacheong was overseer the whole constructive process, from the selection of site, landscaping, construction, maintenance to civil engineering of Mohwaru. There are many difficulties, but he completed through the construction work owing to the protection of King Taejong. Forth, Hong Li worked with Pak Jacheong to build Taepyeonggwan and Mohwagwan from Taejong to Sejong. Supervisors in King Sejong times were required not only private capability but also understanding the Confucianism ritual. Hong Li was faithfully performed the role. Fifth, Sejong was recognized only an excellent ruler but he was also a great coordinator with a professional knowledge about architecture. These Sejong's action fully can be seen as an architect.

• Animal Systematics, Evolution and Diversity
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• v.28 no.2
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• pp.84-96
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• 2012

Some gorgonians in the families, Primnoidae and Isididae within the suborder Calcaxonia were collected from subtidal zones between depths of 10 and 45 m in the coastal regions of King Sejong Station ($62^{\circ}13'S$, $058^{\circ}47'W$), Korea Polar Research Institute of Korea Ocean Research and Development Institute (KORDI) by SCUBA diving from 2009 to 2011. Three species in the Primnoidae, $Arntzia$ $gracilis$ (Molander, 1929), $Thouarella$ ($Thouarella$) $antarctica$ (Valenciennes, 1846) and $Onogorgia$ $nodosa$ (Molander, 1929), and also one species in the family Isididae, $Tenuisis$ $microspiculata$ (Molander, 1929) are newly recorded to octocorallian fauna in Marian Cove and Potter Cove of King George Island. These four species have been described in detail.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1996.11a
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• pp.707-710
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• 1996

During King Sejong's reign in early Chosen Dynasty, the Korean science had been in full bloom. Among the many splendid achievements of the period, though most of them are not extant, astronomical instruments and clocks made for equipping the Royal Observatory are taken as typical works that reflect the characteristics of the King's scientific projects and discussed in the view point that what and how much a well-planned drive and a future-oriented leader can accomplish.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1996.11a
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• pp.702-706
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• 1996

The King Sejong's Striking water-clock was named for its distictive day and night time announcing system. Its time announcing system generates acoustic and visual signals for the twelve double hour, and combinations of two different acoustic signals for the five night watches, The mechanism of this signal generation system is triggered by a copper ball which is mechanically digitized time keeping signal, and is generated from the water clock. The time announcing system consisted four parts: 1) the mechanical amplifier which changes small copper to heavy steel ball, 2) day time announcing system, 3) night time announcing system, 4) sounding mechanism. The time announcing system of King Seong's Striking Clepsidra is remotely related to the Arabic clock system, however, it does have world-widely distictive mechanisms of its era, such as mechanical amplifier, self-weight rachet mechanism, and resetable mechanical computer etc.

• Bulletin of the Korean Space Science Society
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• 1993.04a
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• pp.9-9
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• 1993

No Abstract. See Full-text

• Journal of the Korean Society of Costume
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• v.16
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• pp.111-123
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• 1991

We suppose that Poback-cheok appeared with wearing clothes in the ancient times. At first, man used body as a scale, and it is gradually diversified with social development. It is clear that also in the time of Shilla-Dynasty, the United Shilla-Dynasty and the Goryeo-Dynasty, the system of degree existed in historical relation to that of China. But we don't know it's real length, because there is no recording until the beginning of the Yi-Dynasty. The first recording about Poback-cheok appeared in the time of the King Sejong. Hwangjong-Cheok which is a original vessel of the degree system appears in the 7th years of the King Sejong. In the 12th years of the King Sejong, Ju-cheok, Youngjo-cheok and Joyegi-cheok appeared. In the 13th years of the King Sejong, Poback-cheok appeared as a new changed one. At that time, the length of Poback-cheok is recorded as 44.75cm in chapter of Oye and Jonsoo Pobaek-cheok is recorded as 46.73cm in Jeonjesangjeongso's picture, and it is recorded as 46.80cm in the Kyunggugdaijeon. The scale system is put in good order in the time of King Sejong. But it is confused by the war of 1636 after King Seonjo period. In the 26 th year of King Youngjo, it is reappeared as one of the King Sejong, and it is fixed as 46.80cm. The length is used until the proclamation in the 6th years of the Kwangmu(1902), and then the length of Pobaek-cheok is changed as 48.48 cm, that is measured by a Gok-cheok. After that time, the scale system is very confused during the introduction of new civilization and the Korean-Japanes Unit. So it is used longer or shorter(that is, 49.24cm or 48.91cm). And the metric system is introduced by Japanes in 1926, and it reached the present time. According to use, the actual thing with is used in the end of the Yi-Dynasty is various from 30cm to 70cm. And according to material and craft-man, it can be devided into Hwa-gag scale, Najeon-blacklacquer-scale, bamboo-scale, wooden-scale. The way of expression of measure is always followed by the decimal system. The other half part, except the part of expression of graduation, is put on decorate with a pattern. Also we can see the idea of living on this point.

• Atmosphere
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• v.26 no.2
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• pp.277-288
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• 2016

Polar lows are intense mesoscale cyclones that mainly occur over the sea in polar regions. Owing to their small spatial scale of a diameter less than 1000 km, simulating polar lows is a challenging task. At King Sejong station in West Antartica, polar lows are often observed. Despite the recent significant climatic changes observed over West Antarctica, adequate validation of regional simulations of extreme weather events such as polar lows are rare for this region. To address this gap, simulation results from a recent version of the Polar Weather Research and Forecasting model (Polar WRF) covering Antartic Peninsula at a high horizontal resolution of 3 km are validated against near-surface meteorological observations. We selected a case of high wind speed event on 7 January 2013 recorded at Automatic Meteorological Observation Station (AMOS) in King Sejong station, Antarctica. It is revealed by in situ observations, numerical weather prediction, and reanalysis fields that the synoptic and mesoscale environment of the strong wind event was due to the passage of a strong mesoscale polar low of center pressure 950 hPa. Verifying model results from 3 km grid resolution simulation against AMOS observation showed that high skill in simulating wind speed and surface pressure with a bias of $-1.1m\;s^{-1}$ and -1.2 hPa, respectively. Our evaluation suggests that the Polar WRF can be used as a useful dynamic downscaling tool for the simulation of Antartic weather systems and the near-surface meteorological instruments installed in King Sejong station can provide invaluable data for polar low studies over West Antartica.

• Publications of The Korean Astronomical Society
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• v.26 no.3
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• pp.129-140
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• 2011

In this paper, we have studied Sogyupyo (小圭表, small noon gnomon) of the Joseon dynasty. According to the Veritable Records of King Sejong (世宗, 1418 - 1450), Daegyupyo (大圭表, large noon gnomon) with a height of 40-feet [尺] was constructed by Jeong, Cho (鄭招) and his colleagues in 1435, and installed around Ganuidae (簡儀臺, platform of Ganui). On the contrary, the details of Sogyupyo are unknown although the shadow length measurements by Daegyupyo and Sogyupyo are found on the Veritable Records of King Myeongjong (明宗, 1545 - 1567). By analysing historical documents and performing experiments, we have investigated the construction details of Sogyupyo including its development year, manufacturer, and installation spot. We have found that Sogyupyo would be manufactured by King Sejong in 1440 and placed around Ganuidae. And Sogyupyo would be five times smaller than Daegyupyo, i.e., 8-feet. On the basis of experiments, we suggest that although it is smaller, Sogyupyo was equipped with a bar [橫梁] and a pin-hole projector [影符] like Daegyupyo in order to produce the observation precision presented in the Veritable Record of King Myeongjong.