• Explosives and Blasting
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• v.27 no.2
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• pp.19-25
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• 2009

According to increasing demands for a redevelopment of a wall-slab structure apartment, new explosive demolition methods, which are different from those for RC structure apartment, are requested. In this study, to provide basic design data on explosive demolition of wall-slab structure apartment, wall-slab structure apartments were classified according to building types and dimensions. Also adequate explosive demolition methods for wall-slab structure apartment are analyzed by using blasting pattern factors such as height(H), breadth(B) and length(L) of apartment.

• Journal of the Speleological Society of Korea
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• v.11 no.12
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• pp.43-47
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• 1985

I. 위치 1. 강원도철원군동송면상로2리 2. 용정산 (해발 m)의 4분능선 해발 250m지점의 북향사면 II.동굴규모 1. 총연장 130 m 2. 주동의 연장 87 m (중략)

• Korean Journal of Construction Engineering and Management
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• v.18 no.2
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• pp.49-57
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• 2017

This study intends to determine the decision making criteria of leasing in mix-used shopping mall, analyze the variation of their weight by store size inside mall and lend-lease perspective for lessor and lessee towards the identification of optimal leasing environment in mix-used shopping mall development. The decision making have been identified based on the number of prior literature review and expert consultation. And the AHP methodology and Fuzzy theory have been implemented to develop the weight for criteria based on experts survey. Research finding indicates that the 2 categories with 6 criteria and 24 sub-criteria have been determined. It is noteworthy that the large sized group would be located in both ends on main floor with their requested store size; middle sized group done over second floor with low rent by attracting with both competitive brands and key-tenants; small sized group done in both ends on main floor or on 2 to 3 floor connecting to main circulation. This should be examined in the planning stage of SPA lessee solicitation by the lessor in mix-used shopping mall development project.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.28 no.1
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• pp.199-213
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• 2018

Since 2008, large-scale personal information breach incidents have occurred frequently. Even though national education, policy, and laws have been enacted and implemented to resolve the issue, personal information breaches still occur. Currently, individuals cannot confirm detailed information about what personal information has been affected, and they cannot respond to the breaches. Therefore, it is desirable to develop various methods for preventing and responding to personal information infringement caused by breach and leakage incidents and move to privacy protection behaviors. The purpose of this study is to create understanding of personal information security and information breach, to present services that can prevent breaches of personal information, to investigate the necessity of and analyze the potential public demand for such services, and to provide direction for future privacy-related information services.

• Design Convergence Study
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• v.15 no.5
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• pp.55-70
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• 2016

Multi shopping malls provide us new life-style nowadays with the term, malling. Multi shopping malls are consisted of selling space, entertainment space and convenience space so that arrangement and circulation planning of each facilities have large influence to users. Based on this influences, this study aims to provide basic data for multi shopping malls' circulation planning. Therefore, this study selected 6 multi shopping malls in Seoul and conducted survey that satisfaction of circulation planning of multi shopping malls. For user satisfaction investigation, we studied concept of multi shopping mall following Korean building act and selected composition and characteristics of circulation. Also, we classified the malls to size and circulation shapes for comparison of the satisfaction results. Classified types are high-rise and low-rise and they are separated to small size and big size. In addition, classified circulation shapes are categorized to net type, loop type, cyclical loop type and multi type by forms of central space and main stream of the malls.

• Journal of Korea Port Economic Association
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• v.36 no.1
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• pp.129-140
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• 2020

In the future, the global container handling market will be reorganized into larger ships and shipping alliances, and the bargaining power of shipping companies will be further strengthened. Therefore, the global terminal operator (GTO), which has a global network, vast experience, and operational know-how, is expected to strengthen its competitiveness. In Korea, the central government promoted the development of GTOs in the mid-2000s, but it failed, mainly due to disagreements between port stakeholders. In this study, the macroeconomic indicators that have the same effect in all regions were used to analyze GTO management performance. In the short term, it could be used to establish the business strategy of domestic terminal operators based on changes in macroeconomic indicators. In the long term, it would be used to establish a promotion strategy for GTOs in Korea. The results of analyzing the impact of macroeconomic indicators on the GTO's profit show that the GTO's profit is significantly affected by cargo handling capacity, the consumer price index of the United States, the Shanghai Composite Index, the Crude Oil Price, and the London Inter-bank Offered Rate (LIBOR). However, the scale of impact was not significantly different between public and private GTOs.

• Journal of the Korean earth science society
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• v.21 no.4
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• pp.408-422
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• 2000

Multiple geophysical methods were applied over the Manjang cave area in Cheju Island to compare and contrast the effectiveness of each method for exploration of underground cavities. The used methods are gravity, magnetic, electrical resistivity and GPR(Ground Pentrating Radar) survey, of which instruments are portable and operations are relatively economical. We have chosen seven survey lines and applied appropriate multiple surveys depending on the field conditions. In the case of magnetic method. two-dimensional grid-type surveys were carried out to cover the survey area. The geophysical survey results reveal the characteristic responses of each method relatively well. Among the applied methods, the electric resistivity methods appeared to be the most effective ones in detecting the Manjang Cave and surrounding miscellaneous cavities. Especially, on the inverted resistivity section obtained from the dipole-dipole array data, the two-dimensional distribution of high resistivity cavities are revealed well. The gravity and magnetic data are contaminated easily by various noises and do not show the definitive responses enough to locate and delineate the Manjang cave. But they provide useful information in verifying the dipole-dipole resistivity survey results. The grid-type 2-D magnetic survey data show the trend of cave development well, and it may be used as a reconnaissance regional survey for determining survey lines for further detailed explorations. The GPR data show very sensitive response to the various shallow volcanic structures such as thin spaces between lava flows and small cavities, so we cannot identify the response of the main cave. Although each geophysical method provides its own useful information, the integrated interpretation of multiple survey data is most effective for investigation of the underground caves.