• 디지털융복합연구
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• 제16권2호
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• pp.157-167
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• 2018

인터넷 전문은행은 2017년 국내에 처음 도입된 이후 빠르게 확산되고 있지만 그 한계점에 대한 이슈 역시 계속 대두되고 있다. 특히 점차 경쟁이 심화되는 핀테크 시장에서 인터넷 전문은행의 지속적 성장을 위해 금융소비자에 대한 이해가 중요하다. 이에 본 연구는 인터넷 전문은행에 대한 소비자 태도 실증을 위해 서비스 전환의도 분석에 다수 활용된 PPM 이론을 적용하여 금융소비자의 서비스 전환의도를 확인하였다. 연구 목적 달성을 위해 카카오뱅크 사용자를 대상으로 설문을 진행하여 수거한 총 132부의 데이터를 Smart PLS 3.0을 통해 분석을 수행하였다. 결론적으로 푸시효과와 풀효과가 주거래은행 전환의도에 정(+)의 영향을 미치는 것을 확인하고, 무어링효과가 주거래 전환의도에 미치는 영향에 사용자의 카카오 뱅크 사용정도가 영향을 미치는 것을 확인하였다. 본 연구를 통해 기존 서비스 전환 연구에 활용되던 PPM이론의 활용 범위를 핀테크 서비스로 확장 하였으며, 실무적으로 인터넷 전문은행 확산 전략 수립에 유효한 시사점을 제공할 것이다. 또한 향후 이를 바탕으로 인터넷 전문은행의 다양한 소비자 태도를 설명하는 연구로 활용 할 수 있을 것이다.

• 유통과학연구
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• 제15권12호
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• pp.53-60
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• 2017

Purpose - This paper analyzes the effect of the handset subsidy and the Mobile Number Portability subscriber subsidy regulation, which are the main regulation adopted in "Law on the Improvement of the Mobile Terminal Distribution System" (Mobile Terminal Distribution Act), on the social surplus, the consumer surplus and profits of telecommunications carriers. We focus our analysis on whether the service charge competition is stimulated enough so that it can compensate for the loss of subsidies. Research design, data, and methodology - We use simple economic model to assess the impact of the handset subsidy and the Mobile Number Portability subscriber subsidy regulation. Unlike the former researches on this topic, we depart from using Hotelling model, and instead use the switching cost model, which uses switching cost as a parameter of market powers of telecommunications carriers. We also study the effect of the two different regulations when they are adopted both independently and concurrently. Results - If the market powers of telecommunications carriers are over certain threshold, contrary to the regulatory agency's assertion, the service charge competition would not be stimulated enough to compensate for the deduction in the subsidies, and thus the consumer surplus is compromised. Number Portability subsidy, especially, undermines the rival's market power and thus reduces the service charge. On the other hand, the regulations will also increase the profits of telecommunications carriers. However, social surplus is maximized when both of the regulations are present because the regulations reduces the frequency of switching handsets inefficiently. Conclusions - In enacting the Mobile Terminal Distribution Act, the telecommunications regulatory agency asserted that the regulation on subsidies will stimulate service charge competition, and in the long run, enhance the consumer surplus. However, contrary to the regulatory agency's assertion, subsidy regulation, especially the regulation on Number Portability subsidy, reduces consumer surplus. On the other hand, the Mobile Terminal Distribution Act can also increase the profits of telecommunications carriers because it decreases competition among the telecommunications carriers. However, the Mobile Terminal Distribution Act can increase the social surplus because it reduces inefficient switching of handsets.

• Journal of Power Electronics
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• 제12권3호
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• pp.458-467
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• 2012

Single phase converters suffer from ripple power pulsating at twice the line frequency. The ripple power is usually absorbed by a bulky capacitor bank and/or a dedicative LC resonant link, resulting in a low power density and a high cost. An alternative solution is using a dc link active power filter (APF) to direct the pulsating power into another energy-storage component. The main dc link filter capacitor can then be reduced substantially. Based on a mainstream dc APF topology, this paper proposed a new control strategy incorporating both dual-loop control and repetitive control. The circuit parameter design is also re-examined from a control point of view. The proposed APF scheme has better control performance, and is more suited for high power applications since it works in CCM and with a low switching frequency.