• The Bulletin of The Korean Astronomical Society
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• v.36 no.2
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• pp.142.1-142.1
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• 2011

UBVI and $H{\alpha}$ CCD photometry of IC 1848, one of active star-forming regions in Cas OB6, is carried out as a part of Sejong Open cluster Survey (SOS) project. An OB association is an ideal laboratory for studying the triggered star formation and star formation history. Our purposes are to provide deep photometric data up to 21 mag in V and physical parameters of IC 1848. We classify 79 early-type stars and 186 pre-main sequence (PMS) stars as being the members of the cluster using photometric criteria. The IR excess emission PMS stars by Koenig et al. (2008) are also included as members of IC 1848. Total number of members is 414. We derive the interstellar reddening (=$0.659{\pm}0.058$ mag), reddening law ($R_V=4.0{\pm}0.1$), distance modulus ($V_0-M_V=12.0{\pm}0.1$ mag) using the early-type members of IC 1848. We also determine the age of the cluster ($3.5{\pm}1.5$ Myr) by placing the theoretical isochrones on the HR diagram.

• 보존과학연구
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• s.28
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• pp.105-119
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• 2007

Restoration of earthenware is largely composed of selection of clay, making(forming), and firing. This study lays emphasis on the making method and open-air firing. For making methods, This study used coiling method partly with priority given to ring method. The most significant feature of this restoration work is the making method of tap-forming, in which 외박자(out tap instrument) and 내박자(inter tap instrument) would be tapped and formed. For firing, This study used open-air firing method in the most primitive way. This method needs no special device and equipment and makes the work more simple and easy. The previous study was on the making method by archeological and preservation-scientific research but this study emphasized the restoration work in an actual earthenware maker's position. Through the result of this study, This study wish this would be an opportunity to present another model of various restoration methods for other researchers those who wanted to participate in the restoration and openair firing.

• Journal of the Korean Society of Costume
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• v.24
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• pp.121-142
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• 1995

The Expressionism took shape in the early twentieth century, so called as the time of change and innovation which intermediated between the time of extreme prosperity and peace and the time of disruption. This study is based on the wide sense of Expressionism out of various concepts of Expressionism. The afore-mentioned phenomenon was emphasized all the more in the French Expressionism and it is the most important and substantial object in the Art to make a direct transference of emotion , feeling and thought and it could be regarded as one of characteristics of the French Expressionism . In Addition, the Expressionism produced " Aesthetics on Ugliness "Aesthetics des H lichen )" in creating work of art. It was an expression of the Existentialism based on Humanism for modern people who lived at time of nihility and such artistic movement accepted polarity and ambivalance concepts claimed by Nietzsche into three specific fields in accordance with thought and technique in the work of art and those are the Intuitional Expressionism. Cubistic Expressionism and Fantastic Expressionism. This study makes a close analysis of costume style trends on the basis of the categorized Expressionism enumerated as above. The characteristics of Intuitional Expressionism is that poverty and a sense of alienation dominated all society and thus the social reality brought a trend of social participation . This social reality effected significantly modern costume style and a reformative costume turned up at last . This reformative costume was classified into Gar onne look, Military look and Lingerie look by characteristics of style in order to make a close examination for the relationship between social reality and the reformative structure. Cubistic Expressionism effected costume forming and changed costume style through " Deformation " and " Distortion" in forming technique , and also it has developed geometrical style of costume, which could be symbolized by mechanism. And on the other hand, this Cubistic Expressionism has emphasized exaggerated expression ability to produce rigid and stiff style of costume. Fantastic Expression pursued basic artistic worth from the primitive and ethnic customs and accepted fantastic oriental Exoticism . This Fantastic Expressionism effected costume style of twentieh century and such designers as Lon Bakst, Paul Poiret, Elsa Schiapareli adopted intentive primary color. It also applied " Depaysment" to modern costume style , which introduced avant-garde design to give an impact through destruction of the existing traditional concept. This study also analized seven major representative costume designers of the early twentieth century. They are L on Bakst, Paul Poiret, Madeline Vionnet, JeanPatou, Gabriel Chanel and Elsa Schiaparelli. These designers deployed creative costume design work with peculiar expression technique based on the French expressionism. The costume study related to art history was so far made mostly to approach costume forming but only a few study is found to have approached idealistic background of art history in connection with creating costume. From that point of view, it is profoundly significant for this study to analize idealistic background and characteristics of Expressionism and relationship between costume and expressionism and to examine modern costume of twntieth century in conjunction with technical characteristics and spiritual sense of Expresionism.eristics and spiritual sense of Expresionism.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.24 no.9
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• pp.1219-1226
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• 2000

An efficient method is developed for plunger thermal cycle analysis in repeated forming process of the TV glass. The plunger undergoes temperature fluctuation during a cycle due to the repeated contact and separation from the glass, which attains a cyclic steady state having same temperature history at every cycle. Straightforward analysis of this problem brings about more than 80 cycles to get reasonable solution, and yet hard to setup stopping criteria due to extremely slow convergence. An exponential fitting method is proposed to overcome the difficulty, which finds exponential function to best approximate temperature values of 3 consecutive cycles, and new cycle is restarted with the fitted value at infinite time. Numerical implementation shows that it reduces the number of cycles dramatically to only 6-18 cycles to reach convergence within 10 accuracy. A system for the analysis is constructed, in which the thermal analysis is performed by commercial software ANSYS, and the fitting of the result is done by IMSL library. From the parametric studies, one reveals some important facts that although the plunger cooling or the glass thickness is increased, its counter part in contact is not much affected, duo to the low thermal conductance of the glass.

• The Plant Pathology Journal
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• v.25 no.1
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• pp.38-46
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• 2009

Lichen-forming fungi (LEF) were isolated from 67 Hungarian lichen species from ascospores or thallus fragments. LFF were successfully isolated from 26 species with isolation rate of 38.8%. Of the total number of isolation from ascospores (27 species) and thallus fragments (40 species), 48% and 32.5% of the species were successfully isolated, respectively. Comparison of rDNA sequences of ITS regions between the isolated LFF and the original thallus confirmed that all the isolates originated from the thallus fragments were LEF. The following 14 species of LEF were newly isolated in this study; Acarospora cervina, Bacidia rubella, Cladonia pyxidata, Lasallia pustulata, Lecania hyaline, Lecanora argentata, Parmelina tiliacea, Parmotrema chinense, Physconia distorta, Protoparmeliopsis muralis, Ramalina pollinaria, Sarcogyne regularis, Umbilicaria hirsuta, Xanthoparmelia conspersa and X. stenophylla. Antifungal activity of the Hungarian LFF was evaluated against plant pathogenic fungi of Colletotrichum acutatum, C. coccodes and C. gloeosporioides, causal agent of anthracnose on hot pepper. Among the 26 isolates, 11 LFF showed more than 50% of inhibition rates of mycelial growth of at least one target pathogen. Especially, LFF of Evernia prunastri, Lecania hyalina and Lecanora argentata were remarkably effective in inhibition of mycelial growth of all the tested pathogens with antibiotic mode of action. On the other hands, five isolates of Cladonia furcata, Hypogymnia physodes, Lasallia pustulata, Ramalina fastigiata and Ramalina pollinaria exhibited fungal lytic activity against all the three pathogens. Among the tested fungal pathogens, C. coccodes seemed to be most sensitive to the LFF. The Hungarian LFF firstly isolated in this study can be served as novel bioresources to develop new biofungicides alternative to current fungicides to control hot pepper anthracnose pathogenic fungi.

• Proceedings of the KSME Conference
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• 2000.11b
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• pp.192-198
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• 2000

Three dimensional thermal cycle analysis of the plunger is carried out in repeated forming process of the TV glass, which is continued work of two dimensional analysis where an efficient method has been proposed. The plunger undergoes temperature fluctuation during a cycle due to the repeated contact and separation from the glass, which attains a cyclic steady state having same temperature history at every cycle. Straightforward analysis of this problem brings about more than 90 cycles to get reasonable solution. An exponential function fitting method is proposed, which finds exponential function to best approximate temperature values of 3 consecutive cycles, and new cycle is restarted with the fitted value at infinite time. Number of cases are analyzed using the proposed method and compared to the result of straightforward repetition, from which one finds that the method always reaches nearly convergent solution within $9{\sim}12$ cycles, but turns around afterwards without further convergence. Two step use is found most efficient, in which the exponential fitting is carried out fer the first 12 cycles, followed by simple repetition, which shows fast convergence expending only 6 additional cycles to get the accuracy within 2 error. This reduces the computation cycle remarkably from 90 to 18, which is 80% reduction. From the parametric studies, one reveals that the overall thermal behavior of the plunger in terms of cooling parameters and time is similar to that of 2 dimensional analysis.

• The Bulletin of The Korean Astronomical Society
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• v.44 no.1
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• pp.57.2-57.2
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• 2019

The NISS (Near-infrared Imaging Spectrometer for Star formation history) onboard NEXTSat-1 was successfully launched on last December and is now under the operation phase. The capability of both imaging and spectroscopy is a unique function of the NISS. It has realized the imaging spectroscopy (R~20) with a wide field of view of $2{\times}2deg$. in a wide near-infrared range from 0.95 to $2.5{\mu}m$. The major scientific mission is to study the cosmic star formation history in the local and distant universe. It also demonstrated the space technologies related to the infrared spectro-photometry in space. The NISS is performing the imaging spectroscopic survey for local star-forming galaxies, clusters of galaxies, star-forming regions, ecliptic deep fields and so on. As an extension of the NISS, the SPEHREx (Spectro-Photometer for the History of the Universe Epoch of Reionization, and Ices Explorer) was selected as the NASA MIDEX (Medium-class Explorer) mission (PI Institute: Caltech). As an international partner, KASI will participate in the development and the science for SPHEREx. It will perform the first all-sky infrared spectro-photometric survey to probe the origin of our Universe, to explore the origin and evolution of galaxies, and to explore whether planets around other stars could harbor life. Compared to the NISS, the SPHEREx is designed to have a much wider FoV of $3.5{\times}11.3deg$. as well as wider spectral range from 0.75 to $5.0{\mu}m$. Here, we introduce the status of the two space missions.

• Journal of Contemporary Eastern Asia
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• v.12 no.2
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• pp.35-47
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• 2013

This study aims to understand haiku phenomena from the viewpoint of communication, which emerges from reciprocal relationships among haiku poets, haiku societies, media on haiku, and other establishments relating to haiku. Such an analytic point of view, which tries to consider both the operation of each autonomous agent and that of the whole system consisted by the agents, is included in the realm of second-order cybernetics. The operation of a system cannot be reduced completely to a system's individual components, which is why such a viewpoint is required. Fundamental informatics, which is employed as a theoretical framework, and two haiku movements, which include shin keiko haiku ("new-trend" haiku) and dento ha haiku (Hototogisu-school haiku), forming an important part of modern haiku history, are the focus of this study. As a result, modern haiku history is considered to be an evolution of a haiku system, whose main incentive is an awareness of the production mechanism of haiku communication occurring through second-order observations in the system. This study also illuminates how haiku poets, haiku societies, and media covereage of haiku play roles in the evolution of the haiku system.

• Journal of architectural history
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• v.11 no.1 s.29
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• pp.7-19
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• 2002

Contemporary architecture is developing aspects of variety design in form and material. The various architectural trends even change classical materiality. This concept has the background of current idea - digital, information, imagination with paradigm. So this study aims to show the present status of the expressions in the contemporary architecture in Korea under its dematerialized situation. And like this, we know for study about the relation between dematerialization and current architecture, still more Korean present condition. In chapter one, the background, purpose and method of study are explained. In chapter two, this study inquires the general concept of dematerial. In the process of searching for the forming basic background this study understands the characteristic. In chapter three, this study inquires the aspect of dematerialized expression in modern architect. In chapter four, with characteristics drawn in chapter three, this study show the present status of the expressions in the contemporary architecture in Korea under its dematerialized situation. In chapter five, a synthetic conclusion is presented.

• Journal of the Korean Society of Costume
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• v.50 no.6
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• pp.89-107
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• 2000

Underwear has undertaken the auxiliary role of outwear also. Thus, as outwear has changed forming the characteristic mode in every period, underwear has changed endlessly, so that it may match the form and function of outwear, in accordance with the stream of period. In this study, this researcher examined hoop and petticoat which were used for widening the skirt which is female clothes with diverse names in every period. under one name which is farthingale, centering around the West and korea, from 16th century to 20th century(the first term). In addition, it examined by comparison the relevancy between to the history and change factor of underwear which was used for swelling the skirt in Korean clothes. The result to have studied on the history and change factor about the farthingale of West and Korea is as follows: This study found that the silhouette of women's clothing has a strong relationship with underwear. Also The result to compare the underskirt of the West with that of Korea is as follows : They has other character, but in 18th century, being compared the underskirt of the West with that of Korea, for the swelling of skirt, this study found that they had something in common with the underskirt of the West and Korea.