• Journal of architectural history
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• v.30 no.6
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• pp.7-22
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• 2021

This study was prepared to understand the changes in the stylobate and the characteristics of contrasting with the wooden pagoda of Hwangnyongsa Temple, which occupies an important position in ancient architecture. Literature data related to the wooden pagoda of Hwangnyongsa Temple, excavation data, and newly identified stylobate stone were examined.The reconstruction period of the wooden pagoda of Hwangnyongsa Temple, the size and form of the stylobate, the plan of the stylobate, the height plan, and the elevation plan were reviewed one after another.Since its foundation in 646, the wooden pagoda of Hwangnyongsa Temple has been rebuilt during the reign of King Gyeongmun in 873 and a stylobate has been rebuilt. Through the analysis of similar cases with the wooden pagoda's face stone members, the elevation of the stylobate was proved. It is estimated that the size and format of the wooden pagoda stylobate were similar to those of the reconstruction stylobate. It seems that the Sumijwa style stylobate was first introduced to the foundation of the wooden pagoda of Hwangnyongsa Temple. This is of great significance in that it provided a fundamental motif for the stylobate of architecture and stone architecture of the Unified Silla period.

• Journal of the Korean Geosynthetics Society
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• v.5 no.1
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• pp.15-23
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• 2006

Sand Compaction Pile and Stone Column method have been used in widely during several decades as a technique to reinforce soft soils and increasing ultimate bearing capacity, accelerate consolidation settlement of the foundation ground. Stone column method, making a compaction pile using crushed stone, is a soft ground improvement method. However, stone column method is difficult to apply to the ground which is not mobilized enough lateral confine pressure because no bulging failure resistance. Hence, in present study, development the geogrid reinforced stone column system for settlement reduction and wide range of application of stone columns. To develop this system, triaxial compression tests were conducted for evaluation which is about behavior characteristics of stone column on replacement rate and confine pressure. Then, 3-dimensional numerical analysis were evaluated for application of the GRSC (geogrid reinforced stone column) system as evaluate behavior characteristics and settlement reduction effect of stone column reinforced by geogrid on types and reinforcing depth change of geogrid.

• Proceedings of the KSR Conference
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• 2006.11b
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• pp.1376-1379
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• 2006

Vibro crushed-stone compacted pile (VCCP) method is one of a ground improvement technique by a vibro compaction in vertical direction with crushed stone to build up stone pile foundation in other to ensure stability of soft ground. In spite of its long applied history in geotechnical engineering division, most of studies have not been based on the reliable In-situ condition but on the laboratory tests including model tests. These model tests can express standard and ideal behavior but exceptional status that can be occur in the ground cannot be considered efficiently. This study performed the the series of trial construction to investigate the effect of VCCP method on the improvement of soft ground expecially in railroad construction site.

• Journal of Conservation Science
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• v.32 no.4
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• pp.561-570
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• 2016

This research was a technical case study for the authentic restoration of the seven-storied Simgoksa stone pagoda after disassembly and reconstruction using three-dimensional image analysis. During disassembly and reconstruction, the pagoda's properties were analyzed in terms of the overall modification and displacement of the pagoda. Distortion was minimized by ensuring structural stability during the reconstruction process. Also, the original site of the pagoda was examined in order to utilize it fully during rebuilding. Before reconstruction of the pagoda, moss and lichen on the stone surfaces were removed by scientific surface cleaning. The foundation of the pagoda was reinforced with rammed earth than was similar to the original foundation using a mixture of soil and quicklime. The results are expected to provide valuable data for the reconstruction of other stone pagodas.

• Journal of architectural history
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• v.18 no.1
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• pp.7-29
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• 2009

In understranding the essence of the Korea traditional Architecture, it is important to consider the jointing methods of architectural members, architectural technologies, etc. Especially the purpose of this study is understanding on the Jointing Method of Wooden Members in the period of Unified Silla Architecture. It's conclusion is summarized as follows. 1. A section of column has very close to do with the foundation stone. The structures of foundation stone and column are generally concluded by butt joint, arrow-head joint, housed joint by Grang-e method. Judu is structured by arrow-head joint And, in general, beam is structured by Sagaematchum Chumcha and sagaljudu of Don direction. At the head of Pyungju and the body of Goju, Changbang is structed by Jangbumachum with arrow-head joint or by jumukchang-machum. Also, it is surmised that Gyisoseum and Anssolim methods had been applied to columns from former ages. The example can be found at Bagjae Mireuksaji stone pagoda. Bagjae Mireuksaji stone pagoda taking wooden-pagoda form adopts Gyisoseum and Anssolim methods. We can also find such a sort of methods from other stone constructions like Budo, etc. 2. Injahwaban is structured by short Changbumachum with arrowed-head joint at upper members, and by Anjangmachum at the lower part. This sort of Gongpo style can be seen in the mural painting of tomb of Koguryo and in Buplyungsa, Buplyunsa, Bupkisa-located in Japan, which are influenced by Bakjae or Unified Silla. It is considered that at the end of the late United Silla, Injawhaban had been replaced with Chumcha and Soro on the Pyungbang under influence of Dapo style from China.

• International Commerce and Information Review
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• v.5 no.2
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• pp.47-69
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• 2003

The computer was only used to calculate and solve the mathematical problems, to send the simple data, and to exchange the text based informations in the early 1990's. But nowadays, computer technology give us the chance to exchange digital goods and services, etc. And more, computer and computer based systems can be applied everywhere, for example, it can be used at office, at home, and at school. Most of all, one of the remarkable changes is the development of mobile industry, which can be applied anywhere and anytime. So, this study focused on the current situation and promotion plans of the mobile industry. Mobile is based on the IT, IT and mobile technology are the foundation stone of ubiquitous computing environments. Accordingly, this thesis analysis the meaning of ubiquitous, the meaning and roll of mobile industry. With the analysis of this, the conclusion is that to develop and success the new business model at home and overseas, the cooperation of government section and industry section is the most import thing to make it out.

• 보존과학연구
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• s.19
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• pp.159-177
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• 1998

Three-story Stone Pagoda(East) on Kamǔnsa temple constructed in A.D. 682 during the reign of King Shinmun-wang of the Unified Shilla period(668~935) was repaired by Cultural Properties Office in 1996. At that time, 27 objectsincluding sari case, small Buddha etc. were excavated. The 26 objects on foundation parts have been treated. Several objects were analyzed by EDXRF. As a result, the small Buddha of gilt bronze was proved to be an gold amalgam. The degree of gold purity was about 22K, and the excellence of gold-refining technique of that day was verified.

• 보존과학연구
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• s.27
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• pp.103-128
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• 2006

Rock properties of the five storied stone pagoda in the Mooryangsa temple are consist mainly in medium grained biotite granite with partly pegmatite veinlet. A part of the foundation stone is substituted in identical rock properties of the pagoda. The upper part of the pagoda is used purples and stone, gray shale and granodiorite. The most serious problem of the pagoda is structual instability from centered subsidence of the ground in northwestern direction remarkably. In southern view, the upper part of the pagoda also is slanted a little in right, it will need reinforcement by engineering method for structual stability of the stone pagoda. Weathering states of the stone pagoda are affected results of natural and artifical factors due to the surface-exfoliation, fine-fissure, crack, falling offs. On the rock surface of the pagoda, ferro-manganese hydroxide compounds are coated along the rainpathway. Also, bryophyte range concentration spreads raindrops face of roof rock properties, which areadd biological weathering effects. For the synthetic evaluation of the deterioration state, we make detailed surface weathering maps, it will be contribute to investigation for future conservation schemes.

• 한국지구물리탐사학회:학술대회논문집
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• 2004.08a
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• pp.180-189
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• 2004

The name of (Ban)wolseong thanks to its having a shape like a half-moon. Wolseong fortress is one of 'Gyeongju Historic Area', world heritage. The Silla kingdom's royal palace previously maintained its capital fortress at the locale of Wolseong. However its real face has been kept in mystery. This study grafts Geophysics on modern Archaeology and approaches with scientific and systematic methods to an excavation plan or archaeological study by means of GPR exploration which can complement archaeological curiosity without destroying Wolseong fortress. The exploration area is $12,000m^2$ in front of Seokbinggo(stone storage for ice). It is only $10\%$ area of Wolseong fortress. As a conclusion, GPR detected 7 of squared buildings($8{\times}8m^2$ size), stone wall, an entrance for the fortress, lots of foundation stones, road(presumptive), and a presumptive pond which size is 35${\~}$40m in diameter.

• Proceedings of the Korean Geotechical Society Conference
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• 2008.10a
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• pp.1415-1426
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• 2008

Stone columns, locally called "GCP (granular compaction pile)" can be used to improve strength and resistance against lateral movement of a foundation soil like rigid piles and piers. Also installation of such a discrete column facilitates drainage, and densifies and reinforces the soil in the sense of ground improvement. The integrity of the GCP has been indirectly controlled with the records of each batch including depth and the quantity of stone filled. An integrity testing was attempted using crosshole S-wave logging. The method is conceptionally same as the crosshole sonic logging (CSL) for drilled piers. The only and critical difference is that S-wave should be used in the logging, because P-wave velocity of the stone column is less than that of ground water. The crosshole sonic logger does not have the capability to measure S-wave propagating through the skeleton of crushed stone. An electro-mechanical source, which can generate either P- or SH-waves, and a 1-D geophone were used to measure SH-waves. Two 76mm diameter cased boreholes were installed 1 meter apart across the nominal 700mm diameter stone column. At every 10cm of depth, shear wave was measured across the stone column. One more borehole was also installed 1 meter outward from the one of the above boreholes to measure the shear wave profile of the surrounding soil. The diametric variation of the stone column with respect to depth was evaluated from the shear wave arrival times across the stone column, and shear wave velocities of crushed stone and surrounding soil. The volume calculated with these variational diameters is very close to the actual quantity of the stone filled.