• Korean Journal of Heritage: History & Science
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• v.50 no.4
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• pp.82-103
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• 2017

Systems operating construction expenses for preservation and repair of the architectural heritage may be divided into two in the Japanese colonial era. They are preservation cost nd preservation cost-aided constructions, according to the ownership of a building. Preservation cost construction refers to preservation and repair of government-owned buildings that Japanese Government General of Korea had the ownership and the right of management, and preservation cost-aided construction means preservation and repair of private buildings such as Buddhist temples. In the case of preservation and repair of buildings owned by the government, it was done by the Japanese Government General of Korea, so the same agent executed the budget and managed the properties. They included royal tombs and relics, old government offices, Hyanggyo and some Seowon. On the other hand, in the case of preservation and repair of private buildings, they were private properties, so Japanese Government General of Korea had rights only for permission of preservation and repair. If there was a request for .preservation and repair by an owner, the Japanese Government General of Korea decided on whether it would support its expenses or not and played a role of management and supervision. It applied to Buddhist shrines and pagodas owned by Buddhist temples and shrines and temples owned by individuals and families. Hence, in the case of government-owned buildings, because the preservation cost was spent from the Japanese Government General of Korea's budget for investigation expenses of historical remains or repair expenses of Jeolleung and ruins, they were classified into preservation cost constructions. As for private buildings, the cost was spent from their budget for aiding preservation expenses, so they were classified into preservation cost-aided constructions. Because preservation cost construction and preservation cost-aided construction were conducted by two different agents, there were a little difference in procedures for executing a construction. There was no big difference in the general progress of constructions but was an administrative difference in the kinds of documents submitted and the roles of field supervisors. Such dual systems remained unimproved throughout the Japanese colonial era. The Japanese Government General of Korea was the colonial government so much influenced by the Japanese Government. Most Japanese architectural heritage was owned by Buddhist temples and Shinto shrines and there was almost no building owned by the government, resulting in a unitary system unlike Korea. Heritage system by the Japanese Government General of Korea was established under the influence of Japan regardless of the situation in Korea. Accordingly, Japanese Government General of Korea could not present a definite solution in the bisected system of preservation and repair expenses for the heritage. It shows the limits of the Japanese Government General of Korea in the colonial era.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.8
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• pp.618-626
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• 2019

Stem cell therapy is not expected to bestow any therapeutic benefit because of the low engraftment rates after transplantation.Various cell-carrying scaffolds have been developed in order to overcome this problem. When the scaffold is formed by 3-dimensional (3D) printing, it is possible to create various shapes of scaffolds for specific regions of injury. At the same time, scaffolds provide stem cells as therapeutic-agents and mechanically support an injured region. PCL is not only cost effective, but it is also a widely used material for 3D printing. Therefore, rapid and economical technology development can be achieved when PCL is printed and used as a cell carrier. Yet PCL materials do not perform well as cell carriers, and only a few cells survive on the PCL surface. In this study, we tried to determine the conditions that maximize the cell-loading capacity on the PCL surface to overcome this issue. By applying a plasma treated condition and then collagen coating known to improve the cell loading capacity, it was confirmed that the 3% collagen coating after plasma treatment showed the best cell engraftment capacity during 72 hours after cell loading. By applying the spheroid cell culture method and scaffold structure change, which can affect the cell loading ability, the spheroid cell culture methods vastly improved cell engraftment, and the scaffold structure did not affect the cell engraftment properties. We will conduct further experiments using PCL material as a cell carrier and as based the excellent results of this study.

• Korean Journal of Heritage: History & Science
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• v.49 no.2
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• pp.190-205
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• 2016

Buddhist stupas, which are a symbolic architecture of Buddhism and enshrine the Jinsinsari of Buddha, were reinvented as stone stupas appropriate for the natural soil of Korea from existing wooden stupas around the 7th century after the introduction of Buddhism. Later, the construction of a stone stupa was expanded to local areas from the central area around the 9th century; thus, stone stupas of more diverse local colors were built in a nationwide scale, and today it is called a "country of stone stupas". While focusing on the stylistic interchanges between stone stupas, which were established in each region in accordance with the localization of the establishment of stone stupas that was begun actively from the 9th century, this paper selected several cases of stone stupas among about 50 stone stupas in the Gangwondo-region. First, the study compared the stone stupas and Buddhist priest tower of Seollimwonji, Jinjeonsaji, and Geodonsaji, which are located at the same temple site as the current Buddhist priest tower, from among typical Silla style stupas that match the 9 stone stupas in the Gangwon-do region. This is because stylistic interchanges were possible while there were mutually organic relationships between Buddhist statues such as stone stupas, Buddhist priest towers, stone lanterns, and Buddhist pedestals, which used the same stone material along with the expansion of Buddhism to local areas in accordance with the spread of Zen Buddhism in the 9th century. Second, a comparison was made of the stylistic similarities between the Woljeongsa Palgakgucheong (eight sides nine-storied) stone stupa and the Sinboksaji Samcheung (three-storied) stone stupa, which are totally different in regard to the number of stories and the flat form. These two stone stupas are representative Goryeo stone stupas. The Woljeongsa stone stupa is a Goguryeo-oriented stone stupa with many sided multiple stories whereas the Sinboksaji stone stupa has been known as an early case of the insertion of the support of Tapsin in each story. Although the two stone stupas may look very different, but through close investigation it was confirmed that there were many stylistic interchanges between them and not only the seated stone Buddha statue in the cylinder jewel case in front of the stupa but also the stone stupa established by the same master. Consequently, this paper aimed not merely to mention the simple patterns of stone stupas, but, further, to trace the interchange in patterns in accordance with the construction period based on those patterns.

• Korean Journal of Heritage: History & Science
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• v.50 no.2
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• pp.116-139
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• 2017

Naksansa Temple was famous for a miracle temple where Lee Haeng-ri(李行里), King Ikjo(翼祖), had prayed for offspring and soon begat King Dojo(度祖). According to the First King's Annals("太祖實錄"), King Dojo was the person who directly received prophecy of founding a Joseon. For these reasons, Naksansa Temple received attention concerning the foundation of Joseon. The birth story of King Dojo and his father's prayer at the Avalokitesvara Bodhisattva cave(觀音窟), Naksansa Temple, was well known among the noblemen and royal families until the Late Joseon period. Lee Seoung gye(李成桂) paid particular attention to the Naksansa Temple, and King Sejo(世祖) also made people rebuild the temple when he went for a royal tour in Gangwon-do. Naksansa Temple was built during the time when King Sejo made many temples in order to strengthen the royal authority. King Sejo made people extensively rebuild the temple, praying for health and longevity of King Yejong(his son). King Sejo's will of rebuilding the Naksansa Temple was very strong. The residents of the area had to pay a huge cost because the rebuilding of the Naksansa Temple was a big construction. Hak-yeol(學悅), who had a responsibility of rebuilding the Naksansa Temple, forcedly obtained supplies as he received protection from the royal family. Naksansa Temple thrived with the protection of the royal family after rebuilding. King Yejong and Seongjong gave Naksansa Temple slaves and fields(田地). He also bestowed upon the temple the salts which was the tribute paid by Gangwon-do. In order to protect the precincts of the Naksansa Temple, the government closed the Yang Yang Main Street near Naksansa Temple and built a new road. And the signs of preventing fishing(捕漁) was built along the coast of Naksan in four kilometers in order to keep people out. Although the Naksansa Temple declined in the late Joseon period, it still received support under the protection policy and maintained its reputation as an original Buddhist shrine.

• Economic and Environmental Geology
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• v.52 no.4
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• pp.259-274
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• 2019

Using portable XRF and SWIR analyzer, the characteristics of element dispersion and wallrock alterations induced by interaction between hydrothermal fluids and host rocks were investigated and ore exploration factors were estimated for the orogenic-type Samgwang Au deposits. On this purpose, in-situ measurements were conducted for 804 spots at regular intervals with a total of 4,824 times for host rocks, consisting of schist and gneiss, and altered wallrocks contacted with quartz veins in the Bonhang adit of the deposit, and the results were compared with quantitative data obtained by XRF and ICP analysis. The regression coefficients are 0.88 for major elements and 0.56 for trace elements, excluding V. For polished rock slabs, better results came out for major elements, 0.97 and for trace elements, 0.65. In altered wallrocks contacted with quartz veins, elements such as Fe, Zn, and Rb exhibit positive correlations with As in concentrations, while V forms a negative trend. Contour maps demonstrate that As, Zn, Rb, Fe, Ti, Cr, and Ni are enriched together near quartz veins, showing similar elemental behaviors. In-situ analysis using portable SWIR analyzer represents that schist and gneiss contain mica, illite, chlorite, sericite, amphibole, and epidote, while illite, sericite, gypsum, and mica are present in the altered rocks contacted with quartz veins. In contour maps, chlorite occurs mostly in host rocks, while sericite is concentrated near quartz veins. These results are similar to those of previous studies for element dispersion and hydrothermal alteration, and support the possibility for application of in-situ analysis on the exploration of orogenic gold deposit.

• Korean Journal of Heritage: History & Science
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• v.48 no.3
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• pp.60-79
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• 2015

The study examined reconstruction and building plan of Buyeo Muryangsa Temple in the 17th century and reviewed its construction process and supporting power since the Imjin War of 1592. In addition, The architectural features and design plan of Geukrakjeon that is the most important position in the reconstruction were examined. The reconstruction process of Muryangsa Temple is as follows. Firstly, the study reviewed the reconstruction order of Muryangsa Temple that was progressed in a short period of time from 1624 to 1636. In doing so, the reconstruction period was adjusted from 1633 to 1624 so that the construction order of Muryangsa Temple might be the reconstruction of Geukrakjeon in 1624, Gwaebul in 1627, Sojosamjonbul in 1636 and Beomjong in 1636. Secondly, as the reconstruction of Muryangsa Temple was progressed in a short period of time of 13 years, it was assumed there was great supporting power. In particular, it was found that Jinmukdaesa who lead the construction of Wanju Songgwangsa Temple had an impact on the construction of Muryangsa Temple.It was conjectured that Shin family of the royal family as the supporting power of Songgwangsa through the support of Jinmukdaesa had an impact on Muryangsa Temple. Thirdly, the study reviewed architectural features of Geukrakjeon which has the most important meaning of the reconstruction of Muryangsa Temple. By comparing other reconstructed temples, the architectural style of Muryangsa Temple was examined. In particular, features of Gongpo and furniture were reviewed. In doing so, Muryangsa Temple, the study proposed a possibility that Geukrakjeon would be constructed by an artisan in the same genealogy of Wanju Hwasamsa Temple Geukrakjeon. Finally, the design plan of the building was reviewed with Yongcheok of 309mm used for the construction of Geukrakjeon. Geukrakjeon had perfect proportion compared with other reconstructed temple in the late Joseon period, and golden ratio of 1:1.41 was applied in many areas of building. the study also proposed that the stable design of Geukrakjeon was carried out by the building plan of overall Garam at the time of reconstruction of Muryangsa Temple in the late Joseon period.

• Korean Journal of Construction Engineering and Management
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• v.20 no.4
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• pp.22-33
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• 2019

The government has steadily revised and developed laws and systems for activating remodeling of apartments in response to the problems of aged apartments. However, despite such efforts, remodeling has yet to be activated. For many reasons, this study noted that there were no tools for reasonable profitability judgements and decision making in the preliminary stages of the remodeling project. Thus, the feasibility evaluation model was developed. Generally, the profitability judgements are made after the conceptual design. However, decisions to drive remodeling projects are made at the preliminary stage. So a feasibility evaluation model is required at the preliminary stage. Accordingly, In this study, a feasibility evaluation model was developed for determining preliminary stage profitability. Construction costs, business expenses, financial expenses, and generally sales revenue were calculated using the initial available information and remodeling variables derived through the existing cases. Through this process, we developed an algorithm that can give an overview of the return on investment. In addition, the preliminary stage feasibility evaluation model developed was applied to three cases to verify the applicability of the model. Although applied in three cases, the difference between the model's forecast and actual case values is less than 5%, which is considered highly applicable. If cases are expanded in the future, it will be a useful tool that can be used in actual work. The feasibility evaluation model developed in this study will support decision making by union members, and if the model is applied in different regions, it will be expected to help local governments to understand the size of possible remodeling projects.

• Journal of Bio-Environment Control
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• v.28 no.3
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• pp.243-254
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• 2019

With the recent accelerated policy-making and interests in new renewable energy, plans to develop and supply the new renewable energy have been devised across multiple regions in Korea. Solar energy, in particular, is being applied to small-scale power supply in provincial areas, as solar cells are used to convert solar energy into electric energy to produce electric power. Nonetheless, in the case of solar power plants, the need for a large stretch of land and considerable sum of financial support implies that the planning step should take into consideration the most suitable meteorological and geographical factors. In this study, the proxy variables of meteorological and geographical factors associated with solar energy were considered in analyzing the vulnerable areas regarding the photovoltaic power generation facility across the nation. GIS was used in the spatial analysis to develop a map for assessing the optimal location for photovoltaic power generation facility. The final vulnerability map developed in this study did not reveal any areas that exhibit vulnerability level 5 (very high) or 1 (very low). Jeollanam-do showed the largest value of vulnerability level 4 (high), while a large value of vulnerability level 3 (moderate) was shown by several administrative districts including Gwangju metropolitan city, Jeollabuk-do, Chungcheongbuk-do, and Gangwon-do. A value of vulnerability level 2 (low) was shown by the metropolitan cities including Daegu, Ulsan, and Incheon. When the 30 currently operating solar power plants were compared and reviewed, most were found to be in an area of vulnerability level 2 or 3, indicating that the locations were relatively suitable for solar energy. However, the limited data quantity for solar power plants, which is the limitation of this study, prevents the accuracy of the findings to be clearly established. Nevertheless, the significance of this study lies in that an attempt has been made to assess the vulnerability map for photovoltaic power generation facility targeting various regions across the nation, through the use of the GIS-based spatial analysis technique that takes into account the diverse meteorological and geographical factors. Furthermore, by presenting the data obtained for all regions across the nation, the findings of this study are likely to prove useful as the basic data in fields related to the photovoltaic power generation.

• Korean Journal of Heritage: History & Science
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• v.52 no.1
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• pp.64-81
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• 2019

Jeju Island is located at a strategic position, making it an important waypoint on the sea routes of East Asia. As a result, the island suffered many foreign invasions throughout history. Especially, it is widely known that Japanese pirates frequently invaded the island as the island was located on their way as they were sailing to China. Therefore, they built various defensive structures across the island. Fortresses, where a small number of defenders may fend off an enemy, were built in multiple places on the island. This was a strategy for the island to defend itself, as it was almost impossible to get prompt support in an emergency from the mainland due to the long distance. Fortresses, or walled cities, were the center of politics, culture, and economy of many areas. Therefore, they are a valuable resource to study the history and geographical characteristics of a place. For this reason, studies on fortresses started quite early on. However, studies on such relics in Jeju Island began very late. The research on fortresses was launched during the Japanese occupation for most mainland areas. However, studies on the relics on Jeju Island began as late as the 1970s. This was because scholars did not understand the importance of the city walls and fortresses on Jeju Island, and there were no researchers who specialized in city walls or fortresses on the island, as well. As archeological research on Jeju Island began to gain momentum, the studies on city walls and fortresses saw progress; however, these studies are still of an elementary level. In this study, the author summarized the status of studies on the city walls and fortress relics in Jeju Island and their preservation/maintenance status by era. According to the findings of this study, there were two Corean-era city wall/fortress relics and thirteen from the Chosun era., The researcher analyzed and presented the status of studies and the current condition of the relics. The status of attached structures was also documented.Furthermore, a short review of the maintenance work performed so far was provided. Also, the researcher mentioned the problems that accompanied the maintenance process of these relics, along with suggestions for improvement that could be referred to in future restoration/maintenance projects.

• Journal of the Korean Institute of Landscape Architecture
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• v.47 no.4
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• pp.68-80
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• 2019

This study is to provide basic data for the user-oriented design for a middle school meditation forest in the future by analyzing the physical environment characteristics of existing middle school meditation forests, the users' utilization behavior, and the degree of the importance satisfaction. For this purpose, 24 evaluation indices based on site characteristics, naturalness, functionality, and the effectiveness of meditation forest sites were selected for analysis of importance satisfaction. We surveyed and analyzed the students and teachers of two middle schools 'A' and 'B' in Gwangju Metropolitan City. The results of this study are as follows. First, the perception and utilization rates of the meditation forests by students was significantly lower than teachers at both schools. 'A' school has a better use and recognition rate than the 'B' school. Second, the purposes of using meditation forests were rest (49.6%), weekday lunchtime (63.6%), with friends (65.0%) or colleagues (60%), and short (less than 10 minutes) rests (68.6%). They preferred flowers (30.0%) and shading plants (28.9%), mainly using shelters (57.9%) and walking trails (37.1%). Third, as a result of the importance of satisfaction analysis, the average score of the 24 items importance (3.81), higher than the satisfaction (3.62). The 24 items positioned in 4 quadrants are as follows: Nine items are in the I quadrant for 'persistent maintenance'. Three items are in the II quadrant for 'priority correction'. Seven items are in the quadrant III for 'low priority in the management and operation'. Five items are in the quadrant IV for 'avoid over effort'. For the comparison of two middle schools' satisfaction, 'A' school satisfaction was higher than 'B' school for 16 items, which showed a statistically significant difference. It is believed that the users in 'A' school are more satisfied than 'B' school because it has more forests and trails, better accessibility, and a variety of plant types and planting areas in the A school meditation forest. The results of the overall satisfaction analysis showed a significant difference between 'A' school (68.0%) and 'B' school (47.2%) as 'A' school has better shelters and trails. The rankings of the most satisfying space are walking trails (1st place) and shelters (2nd place). The reason for the highest satisfaction was for rest (stress relief and emotional support) in both 'A' and 'B' schools.