• Nuclear Engineering and Technology
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• v.23 no.3
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• pp.285-298
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• 1991

An example application of the fuzzy set theory is first made to a simple portion of a given accident progression event tree with typical qualitative fuzzy input data, and thereby computational algorithms suitable for application of the fuzzy set theory to the accident progression event tree analysis are identified and illustrated with example applications. Then the procedure used in the simple example is extended to extremely complex accident progression event trees with a number of phenomenological uncertainty issues, i.e., a typical plant damage state‘SEC’of the Zion Nuclear Power Plant risk assessment. The results show that the fuzzy averages of the fuzzy outcomes are very close to the mean values obtained by current methods. The main purpose of this paper is to provide a formal procedure for application of the fuzzy set theory to accident progression event trees with imprecise and qualitative branch probabilities and/or with a number of phenomenological uncertainty issues.

• The Journal of the Acoustical Society of Korea
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• v.34 no.4
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• pp.257-263
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• 2015

Acoustic identification of inner materials in a single-layer cylindrical shell is investigated with acoustic resonance theory. The theoretical resonance peak frequencies for a cylindrical shell are little affected by the density variation, but remarkably changed by the sound speed variation of inner materials. Such acoustic dependency can be utilized to identify inner materials in a cylindrical shell. Acoustic resonance spectrogram for a single-layer cylindrical shell is theoretically plotted as functions of normalized frequency and sound speed of inner materials. The inner materials can be acoustically identified by overlapping acoustic resonance peaks from measured backscattering sound field on the spectrogram. To experimentally confirm this method, backscattering sound field of cylindrical shell filled with water, oil or ethylene glycol was measured in water tank. The inner materials could be identified by acoustic resonance peaks of the backscattering sound field monostatically measured with a transduce of 1.05 MHz center frequency.

• Journal of the Earthquake Engineering Society of Korea
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• v.7 no.4
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• pp.81-87
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• 2003

In this paper, the feasibility of using Shannon's sampling theorem to reconstruct exact mode shapes of a structural system from a limited number of sensor points and localizing damage in that structure with reconstructed mode shapes is investigated. Shannon's sampling theorem for the time domain is reviewed. The theorem is then extended to the spatial domain. To verify the usefulness of extended theorem, mode shapes of a simple beam are reconstructed from a limited amount of data and the reconstructed mode shapes are compared to the exact mode shapes. On the basis of the results, a simple rule is proposed for the optimal placement of accelerometers in modal parameter extraction experiments. Practicality of the proposed rule and the extended Shannon's theorem is demonstrated by detecting damage in laboratory beam structure with two-span via applying to mode shapes of pre and post damage states.

• Journal of Korean Philosophical Society
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• v.139
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• pp.23-45
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• 2016

This paper analyzes Paul Ricoeur's theory of mutual recognition with the concern for the establishment of a desirable relationship between cultures. Ricoeur tries to construct his own theory via Hegel and Honneth. He thinks, according to their theory, the state of being recognized could not arrive eternally. This means that the struggle for recognition could continue permanently. To put an end to the struggle for recognition, Ricoeur introduces the state of peace made possible by the exchange of ceremonial gifts. In other words, the struggle could be eliminated symbolically thorough the exchange of gifts. The mutuality established by this process however, can not accomplish its meaning without overcoming the original dissymmetry between one and the other in which phenomenology has a keen interest. To integrate the dissymmetry into mutuality, Ricoeur gives attention to 'between' the giver and the receiver in the system of gift exchange. He carries out this task by securing a just distance, or a distance in proximity.

• Journal of Korea Society of Industrial Information Systems
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• v.14 no.3
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• pp.76-97
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• 2009

The strategic management process includes the establishment of competitive strategy, its implementation and the measurement of its performance. The sucess of strategic management largely depends on the integration of strategic management process into a managerial tool. This study is on the integration of strategic management process into a managerial tool based on the power process, so that it contributes to strategic success or sustainable competitive advantage of a ￡inn In order to do this, I discussed the principles of the power process, its characteristics, and then suggest their applications to the integration of the strategic management process. According to the results, the power process offers a theoretical and managerial tool which integrates the establishment of competitive strategy with managerial concepts, so that it increases the likelihood of strategic success. Furthermore I discussed the position of the power process approach to competitive advantage in a manner that displays similarities and differences with existing approaches such as industry organizational, resource-based and game theory approach.

• Geotechnical Engineering
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• v.10 no.4
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• pp.17-28
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• 1994

It is well known that human brain has the advantage of handling disperse and parallel distributed data efficiently. On the basic of this fact, artificial neural networks theory was developed and has been applied to various fields of science successfully. In this study, error back propagation algorithm which is one of the teaching technique of artificial neural networks is applied to predict ultimate bearing capacity of pile foundations. For the verification of applicability of this system, a total of 28 data of model pile test results are used. The 9, 14 and 21 test data respectively out of the total 28 data are used for training the networks, and the others are used for the comparison between the predicted and the measured. The results show that the developed system can provide a good matching with model pile test results by training with data more than 14. These limited results show the possibility of utilizing the neural networks for pile capacity prediction problems.

• Journal of Korea Technology Innovation Society
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• v.16 no.4
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• pp.937-953
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• 2013

The theoretical discussion of generation process and development directions of economic fluctuations are actively discussed. This study describes the economic changes applied to empirical research on economic volatility in Korea under the economic theory of network theory [Acemoglu, et al. 2012, 2010]. For the three years in 2000, 2005, and 2010, the network analysis were applied to industry input-output tables. The research results show that the network economic structures in Korea is shifted from a high connectivity among sectors to a lower connectivity. Also, the impact of key industries and the mutual connectivity of input and out among industrial sectors are weaken. Implications for industry and technology policy are derived form the study results.

• Journal of Digital Convergence
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• v.13 no.8
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• pp.439-447
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• 2015

The objectives of this study were to discuss policy for university restructuring from the viewpoint of Habermas' theory of communicative action in Covergence Society, and to provide implications for university restructuring policy in Korea. This study was conducted as a literature review, it discussed the university restructuring policy in Korea, the meaning of Habermas' theory of communicative action, and its implications for university restructuring policy. The main concept of Habermas' theory of communicative action is mutual understanding, and the theory perceives society as systems and lifeworld. Lifeworld pursues communicative rationality. University restructuring in Korea should be promoted through communication between the government and university members rather than through the forced distribution of money by state power.

• Journal of Korea Technology Innovation Society
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• v.14 no.4
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• pp.1050-1072
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• 2011

It is well known that international cooperation is considerably more difficult because of the difference of interests, level of technology of the partners, social and culture as well as various macro-environmental conditions. This case study aims to investigate the success factors of international R&D collaboration between two firms. For it, an in-dept interview was conducted to the Etri-Microsoft Information Security Lab. A comprehensive research on theories, such as resource-based theory, network theory, relationship marketing theory and market power perspective was done as well. The results show clear objectives, communications based on trust, core competence on which the counterpart can rely on, consideration on the government decision process as well as the environment are important for success.

• Journal of Korean Home Economics Education Association
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• v.17 no.2
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• pp.1-10
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• 2005

The purpose of the study was to examine the effects of the lesson using Multiple Intelligence on self-esteem in the unit of Resources management and environment in Technology${\cdot}$Home Economics of middle school. In this study, the lesson using Multiple Intelligence theory for six hours was developed and applied to a class of 37 students of middle school as an experimental group. Lecture-style lesson was applied to the other class of 37 students as a control group. Significant differences between pre-test and post-test scores of self-esteem were found in the experimental group. Post-test scores of self-esteem were higher than pre-test scores of self-esteem in the experimental group. There were no significant differences between pre-test and post-test scores of self-esteem in the control group. It was found that the lesson using Multiple Intelligence theory was effective in improving self-esteem of middle school students.