• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2005년도 추계 학술발표회 제17권2호
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• pp.117-120
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• 2005

In order to achieve target ductility the stress-strain relation of confined concrete is indispensible. In this study the specimens with different transverse reinforcement ratios were tested. The test results were compared with empirical equations and the characteristics of confinement effect were investigated.

• Kyungpook Mathematical Journal
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• 제55권3호
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• pp.541-548
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• 2015

In this paper, concepts of quasi-normal and dually quasi-normal relations are introduced. Characterizations of these relations are obtained. In addition, particulary we show that the anti-order relation ${\nleqslant}$ ($={\leqslant}^C$) is a (dually) quasi-normal relation if and only if the partially ordered set (X, ${\leqslant}$) is an anti-chain.

• 디지털융복합연구
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• 제5권2호
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• pp.99-108
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• 2007

As the transaction using mail order sales mediating sites such as Auction rapidly increase, consumer damages are also increasing. Therefore, in this study, the methods to remedy consumer damages occurring from transactions through mail order sales mediating sites such as the Payment Deposit System, the systems to resolve disputes without any litigation and the systems in relation to the Consumer Basic Act have been examined and measures to improve the systems have been groped. For the transactions using mail order sales intermediating sites, it is necessary to impose more responsibility on mail order sales mediators although the responsibility may not be required to be at the level of mail order sellers such as internet shopping malls. Therefore, institutional supports are necessary to effectively protect consumers in the transactions using mail order sales mediating sites and to induce damaged consumers to actively file claims for compensations. In relation to this, the Collective Dispute Mediation System and the Consumer Group Litigation System under the Consumer Basic Act may become good examples. The consumers who have been subject to the same or similar damages in the transactions using mail order sales mediating sites should also be allowed to participate in the Collective Dispute Mediation under the Consumer Basic Act or actively utilize the Consumer Group Litigation System. Also, it is desirable to reflect these systems on 'the Act on Consumer Protection in E-Commerce etc' so that these systems can also be directly applied to the transactions using mail order sales mediating sites.

• Journal of Information Processing Systems
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• 제11권2호
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• pp.184-204
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• 2015

Fuzzy Formal Concept Analysis (FCA) is a mathematical tool for the effective representation of imprecise and vague knowledge. However, with a large number of formal concepts from a fuzzy context, the task of knowledge representation becomes complex. Hence, knowledge reduction is an important issue in FCA with a fuzzy setting. The purpose of this current study is to address this issue by proposing a method that computes the corresponding crisp order for the fuzzy relation in a given fuzzy formal context. The obtained formal context using the proposed method provides a fewer number of concepts when compared to original fuzzy context. The resultant lattice structure is a reduced form of its corresponding fuzzy concept lattice and preserves the specialized and generalized concepts, as well as stability. This study also shows a step-by-step demonstration of the proposed method and its application.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2005년도 춘계학술대회
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• pp.516-519
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• 2005

The pilot tidal current power plant is to be constructed at the Uldolmok between Chindo and Haenam, during next year. and extensive coastal engineering research works have been carried out. In this paper we describes some observation results of the tide and tidal current. as well as modeling work in order to investigate the tide and tidal current regime change in relation to the tidal current power plant (TCPP) construction. The special modeling skill in order to consider the turbine operation in the TCPP is developed and applied to the estimation for the flow regime change by the simple layout of the tidal current power plant.

• 신재생에너지
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• 제1권2호
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• pp.73-78
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• 2005

The pilot tidal current power plant is to be constructed at the Uldolmok between Chindo and Haenam, during next year, and extensive coastal engineering research works have been carried out. In this paper we describes some observation results of the tide and tidal current, as well as modeling work in order to investigate the tide and tidal current regime change In relation to the tidal current power plant [TCPP] construction. The special modeling skill in order to consider the turbine operation in the TCPP is developed and applied to the estimation for the flow regime change by the simple layout of the tidal current power plant.

• 통합자연과학논문집
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• 제4권3호
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• pp.229-237
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• 2011

Today they use a weather radar with spatially high resolution in predicting rainfall intensity and utilizing the information for super short-range forecast in order to make predictions of such severe meteorological phenomena as heavy rainfall and snow. For a weather radar, they use the Z-R relation between the reflectivity factor(Z) and rainfall intensity(R) by rainfall particles in the atmosphere in order to estimate intensity. Most used among the various Z-R relation is $Z=200R^{1.6}$ applied to stratiform rain. It's also used to estimate basic rainfall intensity of a weather radar run by the weather center. This study set out to compare rainfall intensity between the reflectivity of a weather radar and the ground rainfall of ASOS(Automatic Surface Observation System) by analyzing many different cases of heavy rain, analyze the errors of different weather radars and identify their problems, and investigate their applicability to nowcasting in case of severe weather.

• 건축역사연구
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• 제8권3호
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• pp.39-51
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• 1999

The purpose of this study is to establish the theory of the spatial composition that is 'The Structure of Relation' in Korean traditional houses. This study has been focused on the spatial composition of Hyangdan. The form composition is an element defining primitive functions and space and producing aesthetical effects, where 'quality as a substance' is not important but 'quality as a relation' is essential. Quality as a meaningful relationship comes from realization and regulation of visual attributes among form elements. Each form compositional element establishes the hierarchical structure logically with the entire order, In order for the quality of all form compositional elements to be clarified as a meaningful relationship logically, 'compositional concept' which combines a series of form elements into the grammatical dependence to a specific direction, has to be assumed. If the intrinsic relationship among a series of form compositional elements fails to confront with the 'contextual concept' which eventually indicates unique conditions for a place according to the refined compositional concept, the result of form composition never leads to a specific solution

• 경영과정보연구
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• 제10권
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• pp.95-115
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• 2002

E.U(Europe Union) and I.S.O(International Standard Organization) have promoted environmental problems from an individual enterprise level to international level. E.U have practiced E.M.A.S(Environment Management Audit Scheme), they have explained environmental information to local residents by an environmental statement and they have introduced verification system by identification person. One year later, I.S.O have published ISO 14000 series by environmental audit in 1996. Modem enterprise must go well with profitability and sociality. Environmental accounting was appeared in order to agree with profitability and sociality. Environmental accounting is to solve environmental problems, to protect natural resources, to measure effect of environment, and to transmit information of environment. Accountability's theory must be based social fairness and systemic legality. We need the accountability in order to system of Environmental accounting. But the conception of environmental accounting and accountability are not defined in our country. Therefore the purpose of this study is to established the relation of environmental accounting and accountability.

• 전자공학회논문지B
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• 제31B권12호
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• pp.20-26
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• 1994

Lossless system has been employed to design the perfect reconstruction filter banks and has particularly a close relation with the desing of orthogonal wavelet filter (OWF). With such a relation, we generalize 2-band OWF to the M-band OWF which has an improved performances. The improvement is achieved using the two techniques. One is that the wavelet low pass filter has (N-1)th order regularity with extra zeros while the existing filter has N-th order regularity. The other is that unitary matrix is designed by adding the zeros to the proper positions. As a result, M-band OWF designed by propose method has better performance than M-band OWF designed by exsiting method.