• 서비스연구
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• 제7권4호
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• pp.15-38
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• 2017

본 연구에서는 상표전환과 반복구매의 소비 형태를 보이는 소비자를 대상으로 그들의 상표전환과 반복구매의 결정 요인은 무엇인지 알아보고자 하며 그러한 상표전환의 과정과 반복구매에서 기업의 촉진활동으로 대표되는 마케팅 반응변수별 차이를 분석하여 그 결과를 마케팅에 적용시키기 위한 시사점을 제공하고자 한다. 이는 유통업계간 과다경쟁과 외형을 중시한 판매경쟁의 결과로 밀어내기식의 마케팅을 전개하고 있는 기업에게 소비자를 개개인의 실체로 인식시켜 이에 맞는 효율적인 촉진활동을 제시함으로써 자사상표에 대한 상표 충성도를 높여 지속적인 반복구매를 하게하고 경쟁상표 소비자의 상표전환을 유도하는데 도움을 주고자 한다. 본 연구 결과를 살펴보면 다음과 같다. 첫 번째 이벤트와 가격할인과 샘플이나 견본상표 혹은 로고(logo) 등이 새겨진 것을 일컫는 제품 프리미엄 등을 선호하는 고객들은 반복구매를 하는 특징이 있다. 두 번째 서비스 혜택과 포인트 형 판촉 그리고 비용절감 만족도가 상표전환에는 아무런 영향을 미치지 못했으며 쿠폰 형 판촉을 선호하는 사람들만이 상표전환을 하는 것으로 나타났다. 세 번째 반복구매와 쿠폰 형 판촉 사이에서는 소매 업태가 긍정적인 조절효과를 보이고 있으며 상표전환과 서비스혜택 사이에서도 소매 업태가 긍정적인 조절효과를 보이고 있는 것을 알 수 있었다.

• Journal of Electrical Engineering and Technology
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• 제12권1호
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• pp.262-271
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• 2017

This paper presents a novel concept of phase swapping to associate multiple flux weakening ranges to a non-salient PM machine without altering any hardware of the machine. The proposed concept enables a dual three-phase machine to be operated with different displacement angles between the two three-phase windings. Hence, different flux weakening ranges using winding switching can be accomplished by applying this concept. It was also demonstrated that the proposed concept can be utilized for the discrete step as well as continuous operation of the machines. Any application requiring a wide speed range operation of up to thirteen times the base speed can benefit from this proposed concept. Analytical, simulation, and experimental results are provided to validate the effectiveness of the proposed concept.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2001년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.258-261
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• 2001

High Power factor Active Filter converter is used for Inverter Air conditioner power supply to meet IEC standard. In the active filter topology for power factor, extra switch just control the input current indirectly to meet the IEC standard for reducing the cost and size. In this paper, low cost converter was suggested by simulation using extra switch which auxiliary pulse is inserted and quasi resonant soft switching topology control is adapted for panel's inverter air conditioner converter Inserting auxiliary Pulse method to the extra switch has the benefit of reducing THD by low cost input control circuit. And also quasi resonant soft switching topology can reduce switching loss. So both technical is suitable for Panel's Air conditioner.

• 동아시아식생활학회지
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• 제21권2호
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• pp.298-309
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• 2011

The purpose of this study was to test whether sales promotions of strategic alliances affected brand switching intention and brand loyalty in family restaurants. The types of sales promotions included monetary benefits/non-monetary benefits, and immediate benefit (benefits immediately after consumers agreed to accept promotion)/delayed benefits (benefits received at a later time). For this purpose, a questionnaire survey was completed by 355 customers of family restaurants in Daegu between December 15, of 2009 and January 31, 2010. The study-findings indicated that (1) monetary benefits (application opportunity for gift certificate benefits and price discount benefits) were found to affect brand switching intention and brand loyalty; (2) brand switching intention was partly affected by non-monetary benefits (mileages accumulations benefits, presents benefits, and samples benefits), and (3) brand loyalty was partly influenced by non-monetary benefits (mileages accumulations benefits, presents benefits and electronic newsletter benefits). This study also found that (1) brand switching intention and brand loyalty were partly affected by immediate benefits (sample benefits, presents benefits, and price discount benefits; (2) brand switching intention was partly influenced by delayed benefits (application opportunity for gift certificate benefits and mileages accumulations benefits), and (3) brand loyalty was affected by delayed benefits (application opportunity for gift certificate benefits, mileages accumulations benefits, and electronic newsletter benefits). Based on these findings, family restaurants should use sales promotions as a tool for decreasing brand switching intention and increasing brand loyalty.

• Journal of Power Electronics
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• 제17권6호
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• pp.1523-1534
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• 2017

A Current Error Space Phasor (CESP) based hysteresis controller with online computation of the boundary for two-level inverter fed Induction Motor (IM) drives is presented in this paper. The stator voltages estimated along the ${\alpha}$-and ${\beta}$-axes and the orthogonal current error components of the motor are used in the online computation of the hysteresis boundary. All of the inherent benefits of space phasor based hysteresis controllers such as its quick dynamic response and nearby voltage vector switching are present in the proposed scheme with the added benefit of suppressing switching frequency variations. The similarity in the frequency spectrum of the phase voltage obtained at the output of the inverter using the proposed scheme and Bus Clamping Pulse Width Modulation (BCPWM) based drive is justified with the help of extensive MATLAB SIMULINK simulations. The controller is experimentally verified with a three phase, 2.2 kW IM drive for steady state and transient conditions and the obtained results match the simulation results.

• 기술혁신학회지
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• 제7권3호
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• pp.657-679
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• 2004

The purpose of this paper is to measure economic impact of marine environment conservation research development project. Benefit-Cost(B/C) analysis and Contingent Valuation Methods(CVM) are used to valuate the benefits from the research development projects. A period of three years for research development fund is considered as a part of the costs and adjusted to the net present value (NPV) of the 2002 ending period. The environmental charges for marine environment improvement are considered for the benefit measurement. The benefits are estimated by using monthly average willingness to pay, which is 2,289 Korean won. The contribution of the developing a management model for environmental pollution in the Gwangyang Bay is evaluated utilizing survey data and information. Based on the assessment by expert groups, the contribution of the model was 37.5％. The research results showed that B/C ratio is 20.61, NPV is 89,200 million Korean won, and social rate of return is 185.7％. When the level of contribution is over 1.83％ at the assessment of potential influence, it is recognized to be economically feasible. This research presents a quantitative framework for Research and Development projects for marine environment conservation, and it can be applied to decision making for the investment size of R&D projects.

• 한국대기환경학회지
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• 제28권2호
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• pp.203-210
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• 2012

The purpose of this study is to evaluate the diesel retrofit program which have been proceeded for the last 7 years in Gyeonggi-do. Diesel retrofit programs in Gyeonggi-do consist of the attachment of DPF (Diesel Particulate Filter), p-DPF (partial-DPF) and DOC (Diesel Oxidation Catalyst), switching to LPG engine, scraping an old cars. Emission reduction by diesel retrofit program was estimated $N_2O$ 8,313.4 ton/year, PM10 3,626.4 ton/year, VOC 8,078.5 ton/year in 2010. The benefit-cost analysis shows that the 964 billion wons of benefits are greater than the 853 billion wons of total costs. Diesel retrofit programs could be one of the most effective measures to improve PM10 concentration in metropolitan area. But retrofit programs also need to be properly maintained by each vehicle.

• 품질경영학회지
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• 제36권3호
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• pp.76-86
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• 2008

This paper examines when a consumer in existent telecommunication 2G applies to new telecommunication service 3G from the viewpoint of an option pricing theory. To improve telecommunication quality of service, the consumer applies to 3G. The application means an exchange of 2G for 3G with extra costs such as searching and conversion costs. Since the option to exchange is a right that the consumer can exercise or not, application to 3G is deemed an exercise of the option to exchange at most suitable value of the option. The timing to exercise the option depends on the extra costs and the additional communication benefit from new telecommunication quality of service. These affect an optimal timing to apply to 3G. The optimal applying or switching timing to 3G is when an economic value of the option to exchange is equal to an economic value of the extra costs plus the additional telecommunication quality from new telecommunication service. The option analysis used in this paper is applicable to various industries.

• Journal of Power Electronics
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• 제18권4호
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• pp.1015-1026
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• 2018

A family of dual-DC-input (DI) dual-buck inverters (DBIs) is proposed by employing a DI switching cell as the input of traditional DBIs. Three power ports, i.e. a low voltage DC input port, a high voltage DC input port and an AC output port, are provided by the proposed DI-DBIs. A low voltage DC source, whose voltage is lower than the peak amplitude of the AC side voltage, can be directly connected to the DI-DBI. This supplies power to the AC side in single-stage power conversion. When compared with traditional DBI-based two-stage DC/AC power systems, the conversion stages are reduced, and the power rating and power losses of the front-end Boost converter of the DI-DBI are reduced. In addition, five voltage-levels are generated with the help of the two DC input ports, which is a benefit in terms of reducing the voltage stresses and switching losses of switches. The topology derivation method, operation principles, modulation strategy and characteristics of the proposed inverter are analyzed in-depth. Experimental results are provided to verify the effectiveness and feasibility of the proposed DI-DBIs.

• 지능정보연구
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• 제22권1호
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• pp.19-41
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• 2016

정보통신기술의 발전과 모바일 기기 사용의 생활화로 인해 최근 많은 소비자들이 멀티채널 쇼핑(multi-channel shopping)이라는 새로운 쇼핑 행태를 보이고 있다. 온라인 쇼핑이 등장한 이후, 온라인 매장에서 상품을 구매하기 전 오프라인 매장에서 상품을 먼저 확인하는 쇼루밍(showrooming) 형태의 멀티채널 쇼핑이 한 때 대세를 이루었으나, 최근에는 스마트폰, 태블릿 PC, 스마트워치 등 스마트 기기 사용의 폭발적 증가와 옴니채널(omni-channel) 전략으로 대표되는 오프라인 채널의 대대적 반격으로 인해 오프라인 매장에서 상품을 구매하기 전 온라인(혹은 모바일)으로 정보를 먼저 확인하는 웹루밍(webrooming) 현상이 도드라지게 나타나 온라인 소매업자를 위협하고 있다. 이러한 상황에서 소비자의 온라인 쇼핑에서 웹루밍으로의 쇼핑전환 의도에 영향을 미치는 요인을 분석하는 것이 의미가 있음에도 불구하고, 기존 대부분의 선행연구는 싱글채널(single-channel) 혹은 멀티채널 쇼핑 자체에만 초점을 맞추고 있다. 이에, 본 연구에서는 밀고-당기기-이주이론(push-pull-mooring theory)을 바탕으로 소비자의 온라인 채널 쇼핑이 웹루밍 형태의 쇼핑으로 전환되는 과정을 상품정보 탐색과 구매행위로 각각 구분하여 그 영향을 실증하였다. 연구모형을 검증하기 위하여, 웹루밍 경험이 있는 수도권 소재 대학생을 대상으로 280개의 설문 표본을 수집하였다. 본 연구의 결과는 현업 마케팅 종사자에게 멀티채널 소비자들을 관리하는 데 있어 실무적인 시사점을 제공함과 동시에, 향후 다양한 형태의 멀티채널 쇼핑전환 연구로의 확장에 기여할 수 있을 것으로 기대한다.