• Journal of the Korean Institute of Intelligent Systems
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• v.22 no.6
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• pp.700-705
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• 2012

This paper addresses an intelligent digital redesign (IDR) technique for observer-based output-feedback control systems, in order to efficiently convert a pre-designed Takagi-Sugeno fuzzy model-based analog controller into a sampled-data one in the sense of state matching. A delta operator is used to get an asymptotic relation between the analog and the sampled-data control systems. The IDR problem is viewed as a minimization problem of the norm distances between linear operator to be matched. The condition is represented as linear matrix inequalities, and the separation principle on the IDR is shown.

• Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
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• v.7 no.6
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• pp.937-945
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• 2017

Economy of Communion (EoC) is an emerging economic principle that recognizes the dilemma of traditional perspectives and turns to human centered values and ideas. Furthermore the EoC encompasses all the principles derives from free market economy, ethical norm and social solidarity. This study aims to understand Economy of Communion concepts and its ripple effects under current Korean economy condition which mainly follows Neo-liberalism. Korean economy needs new paradigm to deal with intensifying economical inequality in Korea these days. By understanding EoC's primary value and studying research cases and Sungsimdang, Seokwangsa one of EoC enterprise cases in Korea, this study suggests new economic paradigm. In response to the needs, two important practices should be manifested through fraternity: 1) mutural equity, and 2) dissemination of giving culture. These are construct the economy of communion, which is defined as unique humanism. This study is also expected to suggest new paradigm that establishes new economy system that can cover current economy system's problems.

• Korean Journal of Social Welfare Studies
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• v.44 no.2
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• pp.141-168
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• 2013

The purpose of this study is to substantially understand and identify experienced social exclusion of the disabled in Korea. For this, the 8 times in focus interview implemented on 31 of the disabled with regard to disability type, gender, age, education, job etc. The results, firstly it found that participants experienced material deprivation due to inequality on economic distributions, and the multi-deprivation of social rights overall social systems and scopes resulted from the disability discrimination against the organization of society. Nextly, it represented that they got the exclusion from social participation and isolation and alienation in social relationships in the dimension of society. In that, particularly, a sort of invisible type of social exclusion such as an intolerant and double social norm and values is found, which has been impacted on their impairment or disability in the participants. This founded results contribute on applying fundamental data for political and practical implementations for social inclusion of the disabled, as well as theoretical building for conception of social exclusion of the disabled.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.18 no.4
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• pp.1042-1058
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• 2024

Terahertz (THz) communication is becoming a key technology for future 6G wireless networks because of its ultra-wide band. However, the implementation of THz communication systems confronts formidable challenges, notably beam splitting effects and high computational complexity associated with them. Our primary objective is to design a hybrid precoder that minimizes the Euclidean distance from the fully digital precoder. The analog precoding part adopts the delay-phase alternating minimization (DP-AltMin) algorithm, which divides the analog precoder into phase shifters and time delayers. This effectively addresses the beam splitting effects within THz communication by incorporating time delays. The traditional digital precoding solution, however, needs matrix inversion in THz massive multiple-input multiple-output (MIMO) communication systems, resulting in significant computational complexity and complicating the design of the analog precoder. To address this issue, we exploit the characteristics of THz massive MIMO communication systems and construct the digital precoder as a product of scale factors and semi-unitary matrices. We utilize Schatten norm and Hölder's inequality to create semi-unitary matrices after initializing the scale factors depending on the power allocation. Finally, the analog precoder and digital precoder are alternately optimized to obtain the ultimate hybrid precoding scheme. Extensive numerical simulations have demonstrated that our proposed algorithm outperforms existing methods in mitigating the beam splitting issue, improving system performance, and exhibiting lower complexity. Furthermore, our approach exhibits a more favorable alignment with practical application requirements, underlying its practicality and efficiency.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.19 no.2
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• pp.13-25
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• 2024

Local decline can be caused by business closures or the departure of the youth. Most countries have been striving to overcome regional inequality through local or community entrepreneurship using assets or contents obtained from differentiated and original embedded resources. The purpose of this study is to conceptualize local contents and local entrepreneurship. To reach the research goals, this paper utilizes the grounded theory as qualitative methodology. From the main findings, this paper suggests that entrepreneurship in the local is influenced by informal alley or specific location (regions) institution outputs so called as local contents which are local norm, culture, local identities. This paper conceptualizes local contents as 'product of creative scenario'. And this work also suggests the liner model for local content innovation. The contribution of this work are two: 1) showing how the local content creation process; 2) analyzing the how local entrepreneurship configures. It can be inclusive potential startups items rooted at the unique resources and assets of the locals and reflecting the originality of locality. In terms of local institutional perspectives, local development takes pace when advancing application of local entrepreneurship. In order for that, practical challenging is more needed by using informal local institutions. Also 'three step linear model' will be applied to educate the new creators. Local contents and local entrepreneurship can definitely rehabilitate locality.