• Journal of the Korean Society of Costume
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• v.64 no.2
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• pp.150-162
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• 2014

This study examined the excavated clothes of Lady Sim Cheongsong(1753~1810) in Jecheon which were excavated in 2012. Lady Sim died at the age of 57 and the excavated relics belonged to the 18th and 19th centuries. The excavated relics consisted of 9 pieces of three-kind-clothes. They showed various qualities such as Plain-Silk, Plaited-Silk, Patterned Twill, Plain Twill, Plain Satin, and Satin Damask. Through comparing them with the other excavated clothes of the 18th and 19th centuries, we can comprehend the periodical changes of the excavated Jegori and Yeomo (the hat for a dead woman). The excavated Jegori shows the difference of length and form from the other Jegori of the 18th century. The total length of the excavated Jegori ranged from 24 cm to 25 cm, which is 10 cm shorter than that of the other Jegori of the 18th century. The excavated hat for a dead woman shows the changes of the form and needlework. The form of a rectangular cover was changed into that of a round shape. In regards to the sewing composition, the way of inserting the cover into Mosin(the body of the hat for a dead woman) was replaced by that of connecting the cover into Mosin. The excavated clothes show three kinds of textile fabrics: plain silk fabrics and plaited silk, plain twill and four-leaf-patterned twill, eight-leaf-plain satin of life-lettered textile and five-leaf satin damask, and plain satin. Especially, the combination of eight-leaf satin and four-leaf twill with mixed textile is considered as a fabric of high quality. The excavated clothes of Lady Sim Cheongsong showed a periodical change which was different from the clothes of the 18th century in terms of the formal composition of Jegori and Yeomo. Regarding Women's Jegori a short length and slim and long sleeves are changed into short and tight Jegori, which signaled the specific change of Jegori aesthetics. The significance of the excavated clothes of Lady Sim Cheongsong lies in its role as the bases for understanding the couture culture of the 19th century.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.20 no.1
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• pp.75-82
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• 2007

This paper addresses a method for shape optimization of a continuous elastic body considering stability, i.e., buckling behavior. The sensitivity formula for critical load is analytically derived and expressed in terms of shape variation, based on the continuum formulation of the stability problem. Unlike the conventional finite difference method (FDM), this method is efficient in that only a couple of analyses are required regardless of the number of design parameters. Commercial software such as ANSYS can be employed since the method requires only the result of the analysis in computation of the sensitivity. Though the buckling problem is more efficiently solved by structural elements such as a beam and shell, elastic solids have been chosen for the buckling analysis because solid elements can generally be used for any kind of structure whether it is thick or thin. Sensitivity is then computed by using the mathematical package MATLAB with the initial stress and buckling analysis of ANSYS. Several problems we chosen in order to illustrate the efficiency of the presented method. They are applied to the shape optimization problems to minimize weight under allowed critical loads and to maximize critical loads under same volume.

• Journal of the Korean earth science society
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• v.34 no.6
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• pp.588-601
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• 2013

In geophysics and geophysical exploration fields, we can use information about inclination and azimuth in various ways. These include borehole deviation logging for inversion process, real-time data acquisition system, geophysical monitoring system, and so on. This type of information is also necessarily used in the directional drilling of shale gas fields. We thus need to develop a subminiature, low-powered, multi-functional inclination and azimuth measurement system for geophysical exploration fields. In this paper, to develop real-time measurement system, we adopt the high performance low power Micro Control Unit (made with state-of-the-art Complementary Metal Oxide Semiconductor technology) and newly released Micro Electro Mechanical Systems Attitude Heading Reference System sensors. We present test results on the development of a multifunctional real-time inclination and azimuth measurement system. The developed system has an ultra-slim body so as to be installed in 42mm sonde. Also, this system allows us to acquire data in real-time and to easily expand its application by synchronizing with a depth encoder or Differential Global Positioning System.

• The Korean Journal of Mycology
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• v.23 no.1 s.72
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• pp.92-104
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• 1995

Ten species of Cordyceps species were collected throughout Kangwon province including Chuncheon Dongsanmyun KNU forest experiment from June to September, 1993. Collected Cordyceps species were identified as Cordyceps militaris, C. roseostromata, C. kyushuensis, C. scarabaeicola, Phytocordyceps ninchukiospora, C. nutans, Paecilomyces tenuipes, C. sphecocephala, Hymenostilbe odonatae, Torrubiella sp.. C. militaris, type species of Cordyceps species, was mainly formed on pupae of Lepidoptera and found after the rainy season around July. Fruiting body of C. roseostromata was morphologically similar to those of C. militaris, but relatively small in size and they were also found on lawn or pupa of Lepidoptera. Fruiting body of C. scarabaeicola was found on adult Scarabaeidae specifically and collect fruiting bodies of C. kyushuensis were on larva of moth. C. nutans and C. sphecocephala had host specificity on Hemiptera and Hymenoptera, respectively. Each species formed elliptical fertile part attach to the slim and carneous stalk and they were collected the most in specimen number through whole season of the summer. Ascospore of Phytocordyceps ninchukiospora on seed was characterized by two viable, multiseptate, fusiform units linked end-to-end by a long, filiform connective. Paecilomyces tenuipes, imperfect stage of the genus Cordyceps is multi-infective fungi that attack all stages of all groups of insects. Hymenostilbe odonatae attacks only adult Odonata and Torrubiella sp. formed on spider was difficult to collect because it was found the back side of leaf. As results of cultural test PDA medium showed the best mycelial growth. In the experiment of effect of the acidity inside of the media, C. militaris was good on pH 5, C. nutans and Phytocordyceps ninchukiospora were good on pH 6 and Paecilomyces tenuipes was on pH 7 and C. scarabaeicola was on pH 9. All isolates tested showed the best mycelial growth at $20^{\circ}C$. Morphologically similar isolates were used to analyze protein banding pattern among and within species. As a result, C. militaris, C. roseostromata and C. kyushuensis were clustered into close species and C. scarabaeicola and Phytocordyceps ninchukiospora were relatively distant from those species.