• 한국지구물리탐사학회:학술대회논문집
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• 2008.10a
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• pp.167-172
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• 2008

A microgravity survey was applied for detecting and mapping karstic cavities over limestone area at Gaeun. The gravity data were collected at about 1, 100 stations by 4 m interval. The density distribution beneath the profiles was drawn by two dimensional inversion based on the minimum support stabilizing functional, which generated better focused images of density discontinuities. We also imaged three dimensional density distribution by growing body inversion. The density image showed that the cavities were dissolved, enlarged and connected into a cavity network system.

• Geophysics and Geophysical Exploration
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• v.10 no.1
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• pp.44-49
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• 2007

It is difficult to obtain high-resolution images by 3D gravity inversion, because the problem is extremely underdetermined - there are too many model parameters. In order to reduce the number of model parameters we propose a 3D gravity inversion scheme utilising Euler deconvolution as a priori information. The essential point of this scheme is the reduction of the nonuniqueness of solutions by restricting the inversion space with the help of Euler deconvolution. We carry out a systematic exploration of the growing body process, but only in the restricted space within a certain radius of the Euler solutions. We have tested our method with synthetic gravity data, and also applied it to a real dataset, to delineate underground cavities in a limestone area. We found that we obtained a more reasonable subsurface density image by means of this combination between the Euler solution and the inversion process.

• Journal of the Korean Society of Costume
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• v.50 no.3
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• pp.13-30
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• 2000

The purpose of this study was to analyzed the types of Deformation dipicted on the late 1990s western costumes. The late 20th century cultural experience or lifestyle is interpreted with 'popular culture' ,popular culture is described as cultural phenomenon in postmodern condition. Contemporary popular culture may no longer be strictly 'working-class' as the idealistic purists of political formalism would like to , but does emerge from subordinate cultures, from the inventive edges of the consensus, and from the previously ignored and suppressed. It gestured through a widening democratization of styles, sounds and images, to an important remarking , to new possibilities , new perpectives, new projects. The growing importance of popular culture as a source for change of expression in the art, expecially new desire and will of artists has been caused lots of ' Deformation' in their works. Deformation, doesn't mean to represent object faithfully as it were seen through the artist's eyes. In a sense it implies that artists deform it with conscious or unconscious form. So in this study , the phenomenon of the postmodern western costumes is to describe ' formative language' called 'Deformation.' and it is classified three types, that is, 'Deformation of human-body image.' , Deformation of silhouette.' 'Deformation of detail.'. First , Deformation of human-body image is represented by deconstructive , subversive image in western costumes, a lot of costumes types of deconstruction have been shown by fashion designers are emphasized empathy with Deformation of human-body image. Second, Deformation of silhouette is also represented subversion of traditional manner and ultiity, underwear and outwear structure and ugly image. parody image of postumodernism , and so on. Above all, the late 1990s western costumes with Deformation of silhouette was an infinitely larger and more complex world than it appeared from outside and has expressed as a rejection against the values which traditional aesthetic concept had pursued, And parody through the change of internal meaning is to bring about parodox, irony, contempt, satire , unexpectedness by applying the original to inapproporate subject through its substition, inversion. Third, Deformation of detail is represented overdecoration, exaggerative distortion of for , overlapping and fetish image, parody image, kitsch image, and so on , Once fetish achieve a certain' style factor' among trendsettler, they are picked up by internationally famous fashion designers, The characteristics of kitsch are overdecoration , unfitness , imitation , used western costumes.

• Geophysics and Geophysical Exploration
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• v.10 no.4
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• pp.383-392
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• 2007

Karstic features and mining-related cavities not only lead to severe restrictions in land utilizations, but also constitute serious concern about geohazard and groundwater contamination. A microgravity survey was applied for detecting, mapping and monitoring karstic cavities in the test site at Muan prepared by KIGAM. The gravity data were collected using an AutoGrav CG-3 gravimeter at about 800 stations by 5 m interval along paddy paths. The density distribution beneath the profiles was drawn by two dimensional inversion based on the minimum support stabilizing functional, which generated better focused images of density discontinuities. We also imaged three dimensional density distribution by growing body inversion with solution from Euler deconvolution as a priori information. The density image showed that the cavities were dissolved, enlarged and connected into a cavity network system, which was supported by drill hole logs. A time-lapse microgravity was executed on the road in the test site for monitoring the change of the subsurface density distribution before and after grouting. The data were adjusted for reducing the effects due to the different condition of each survey, and inverted to density distributions. They show the change of density structure during the lapsed time, which implies the effects of grouting. This case history at the Muan test site showed that the microgravity with accuracy and precision of ${\mu}Gal$ is an effective and practical tool for detecting, mapping and monitoring the subsurface cavities.