• Journal of Power Electronics
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• 제16권6호
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• pp.2109-2118
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• 2016

Based on the space vector pulse width modulation (SVPWM) theory, this paper realizes an easier SVPWM strategy, which is equivalently implemented by CBSPWM with zero-sequence voltage injection. The traditional SVPWM strategy has no effect on controlling the neutral-point voltage balance. In order to solve the neutral-point voltage unbalance problem for neutral-point-clamped (NPC) three-level inverters, this paper proposes a neutral-point voltage balance controller. The proposed controller realizes controlling the neutral-point voltage balance by dynamically calculating the offset superimposed to the three-phase modulation waves of an equivalent SVPWM strategy. Compared with the traditional SVPWM strategy, the proposed neutral-point voltage balance controller has a strong ability to balance the neutral-point voltage, has good steady-state performance, improves the output waveforms quality and is easy for digital implementation. An experiment has been carried out on a NPC three-level inverter prototype based on a digital signal processor-complex programmable logic device (DSP-CPLD). The obtained experimental results verify the effectiveness of the proposed neutral-point voltage balance controller.

• 조형예술학연구
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• 제6권
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• pp.60-80
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• 2004

This study aims at the observation of the Real in the Post-Lacanian theory. It is focused on two questions as ideology and fantasy. On this basis Slavoj $\v{Z}i\v{z}ek$ has rearticulated the theory of ideology by reexamining Althusser's version of it critically. The ideology is the logic of fantasy based on the foreclosure. And the ethical act of identifying with the symptom is absolutely called for in order to radically rearticulate it. The really key element in the concept is now found to be Lacanian object a, the symptom as jouissance. In additional, the two part of the study, far from belonging to two different domains, that of political analysis and artistic analysis, relate to each other like the two surfaces of a Moebius band. Finally, the role of the Lacanian real is radically ambiguous: true, it erupts in, the form of a traumatic return, derailing the balance of the Order, but it serves at the same time as a support of this very balance. The real functions here not as something that resists symbolization, as a meaningless leftover that can not be integrated into the symbolic universe, but on the contrary, as its last support.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제10권10호
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• pp.4724-4747
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• 2016

To efficiently reduce on-grid energy consumption, the admission control algorithm in the hybrid energy powered cellular network (HybE-Net) with base stations (BSs) powered by on-grid energy and solar energy is studied. In HybE-Net, the fluctuation of solar energy harvesting and energy consumption may result in the imbalance of solar energy utilization among BSs, i.e., some BSs may be surplus in solar energy, while others may maintain operation with on-grid energy supply. Obviously, it makes solar energy not completely useable, and on-grid energy cannot be reduced at capacity. Thus, how to control user admission to improve solar energy utilization and to reduce on-grid energy consumption is a great challenge. Motivated by this, we first model the energy flow behavior by using stochastic queue model, and dynamic energy characteristics are analyzed mathematically. Then, fuzzy logic based admission control algorithm is proposed, which comprehensively considers admission judgment parameters, e.g., transmission rate, bandwidth, energy state of BSs. Moreover, the index of solar energy utilization balancing is proposed to improve the balance of energy utilization among different BSs in the proposed algorithm. Finally, simulation results demonstrate that the proposed algorithm performs excellently in improving solar energy utilization and reducing on-grid energy consumption of the HybE-Net.

• Asia Marketing Journal
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• 제19권2호
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• pp.63-80
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• 2017

This study investigated the impact of advertising of socially controversial products on its endorsers and products, and the role of media in moderating the results. Using the source credibility model with 174 survey samples, advertising of controversial products as a form of product placement (PPL) was found to have negative impact on consumers' attitude toward the endorsers. The results also confirmed that the moderating effect of media credibility on consumers when developing perceptions toward the endorsers. The results suggest marketing managers to use endorsers with careful consideration in designing advertising messages for socially controversial products, especially when delivered as a product placement on television.

• 동아시아경상학회지
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• 제9권4호
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• pp.57-67
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• 2021

Purpose - The corporate culture's energy is recognized to go through the company and facilitate a new balance to realize success, which means that the culture in an environment of various organizations affects the performance of its employees. The purpose of the current research is to investigate the impact of organizational culture on employee performance. Research design, data, and methodology - The current research conducted a qualitative content analysis. The primary research approach applied by qualitative content analysis is an inductive methodology, and this approach is a type of reasoning that seeks the application of logic, which later helps develop a theory that will guide the future research. Result - Research findings of the present study indicated that five solutions to the problems encountered through the execution of culture are attached to how effective the organizational culture are when workers execute. Thus, culture is realized to boost structure, because the structure of an organization elevates the behavior of the organization. Conclusion - Workers will be aware of both the negative and positive implications of executing culture in the organization. Therefore, organization managers must learn that various employees are vital people in their vicinity, and creating a culture that would make a good rapport with them is vital.

• 동양고전연구
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• 제33호
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• pp.31-56
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• 2008

여헌 장현광은 조선시대 여타의 유학자에 비해 철저하게 성리학의 본질을 충실하게 탐구하고, 심도 있게 학설을 확장시킨 학자이다. 여헌은 성리학적 교육의 기본 체계인 "대학"과 "중용"에 의거하여 자신의 학설을 강화한다. 이러한 사유의 전개에 근거하여 여헌의 교육사상은 세 측면에서 조명해 볼 수 있다. 첫째, 여헌은 교육의 기준으로서 성인군주론(聖人君主論)을 심화한다. 그것은 본질적으로 존천리알인욕(存天理?人欲)을 추구하며, 도덕적 각성과 덕치주의를 강조한다. 둘째, 여헌은 교육의 양식으로서 성경(誠敬)의 공부론을 강조한다. 여헌은 마음에 성(誠)과 경(敬)을 세울 것을 강조하고, 두 가지의 차별성을 인정하면서도 동일한 맥락에서 이해한다. 셋째, 여헌은 교육의 방법으로서 분합(分合)의 조화를 주창한다. 여헌은 그의 독특한 리기경위설(理氣經緯說)을 통해, 역(易)의 논리에 따라 어느 한쪽으로 치우치거나 지나치지 않는 중용의 관점을 유지한다. 이러한 여헌의 교육적 사유는 현대 교육적 의미에서 볼 때, 교육의 표준을 도덕의 확립에 두고, 교육의 양식과 방법에서 중용적 통찰을 고려하는 아이디어를 제공한다. 요컨대, 여헌의 교육사상은 일관성을 지닌 전통 성리학의 교육적 지혜를 담고 있는데, 현대 교육의 기준 혼란, 내용의 비체계화, 방법적 치우침에 대한 균형 감각의 중요성을 재검토하는 데 주요한 시사점을 준다.