• 동아시아경상학회지
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• 제9권1호
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• pp.1-16
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• 2021

Purpose - This study aims to analyze 7-Eleven's specific competitive advantage strategy according to changes in the Japanese convenience store industry by selecting 7-Eleven, a leading company in the Japanese convenience store industry, as a representative case study. Research design, data, and methodology - Due to the current COVID-19 situation, fact-finding such as interviews with key managers through visiting surveys was not possible, so this case study was carried out based on the literature such as official and unofficial data collected from the companies through e-mail and articles that have been published outside. Result - As a result of the analysis, the researcher found that five competing strategy factors, such as dominant strategy, innovative logistics system strategy, information system development strategy, joint product development strategy, and direct communication strategy have closely maintained the mutual relation to form a combined strategy focusing on the franchise development strategy. Conclusion - The competitive advantage of 7-Eleven is thought to have secured its competitive advantage by combining the five competitive strategies complementarily for rapid response to change, cost advantage, and differentiated advantage. The management implications specified in this study can be considered a reference for establishing a competitive strategy for sustainable growth of the convenience store industry in the fierce competition and saturated market environment of Korean convenience stores.

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2003년도 봄 학술발표대회논문집
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• pp.194-195
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• 2003

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2001년도 디자인학연구 2001 봄 학술발표회 논문집
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• pp.90-91
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• 2001

• 전기학회논문지
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• 제65권2호
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• pp.279-285
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• 2016

In this paper, a cogging torque of IPM(Interior Permanent Magnet)-type BLDC motor is analyzed by FE program and the optimized notch on the rotor surface is designed to minimize the torque ripple. A differential evolution strategy algorithm and a response surface method are employed to optimize the rotor notch. In order to verify the proposed algorithm, an IPM BLDC motor is used, which is 50 kW, 8 poles, 48 slots and 1200 rpm at the rated speed. Its characteristics of the motor is calculated by FE program and 4 design variables are set on the rotor notch. The initial shape of the notch is like a non-symmetric half-elliptic and it is optimized by the developed algorithm. The cogging torque of the final model is reduced to $1.5[N{\cdot}m]$ from $5.2[N{\cdot}m]$ of the initial, which is about 71 % reduction. Consequently, the proposed algorithm for the cogging torque reduction of IPM-type BLDC motor using the rotor notch design seems to be very useful to a mechanical design for reducing noise and vibration.

• 대한지구과학교육학회지
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• 제17권1호
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• pp.1-19
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• 2024

이 연구는 테크놀로지 활용 과학 수업을 위한 분산 인지 이론 기반 수업 전략을 신뢰도와 타당도가 확보된 절차에 따라 개발한 설계·개발 연구이다. 수업 전략 개발을 위해 설계·개발 연구 방법론 절차에 따라 개발 연구와 타당화 연구를 진행하였다. 개발 연구에서는 선행 문헌 검토와 사전 전문가 검토 방법으로 초기 수업 전략을 개발하였다. 타당화 연구에서는 내적 타당화(전문가 타당화, 사용성 평가)와 외적 타당화(현장 적용 평가) 방법으로 수업 전략을 타당화하고 최종 수업 전략을 개발하였다. 최종 수업 전략은 3개의 수업 원리와 9개의 수업 전략, 38개의 세부 지침으로 구성하였다. 이 연구를 통해 연구자는 테크놀로지 활용 과학 수업을 위한 수업 전략의 적합성, 블록과 교수·학습 과정안의 유용성, 인지적 도구로서 테크놀로지의 활용 가능성, 테크놀로지 활용 교수 역량 함양을 위한 교사의 노력 필요, 수업 전략 적용에 영향을 미치는 조건을 고려한 수업 설계를 제안하였다.

• Architectural research
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• 제12권2호
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• pp.41-52
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• 2010

The aim of this paper is to evaluate the methodological strategies for the architectural design field of study mainly focused on qualitative and quantitative research designs. Firstly, this paper addresses the characteristics of the six approaches including their methodological aspects in general. Each strategy is assessed by the different approaches to give full insights in it. Secondly, it distinguishes the differences among six research approaches especially derived from qualitative and quantitative research designs. The differences are discussed in terms of the strengths and weaknesses of each strategy. Finally, this paper attempts to discuss about possible applications for introducing approaches to the research topic with which the exemplified research topic, a design evaluation system, deals. To investigate the applicability of the design methods employed, the following topic has been stated; how to develop a design evaluation system and what to be considered for unfolding the thrown topic in terms of strategic approaches in the field of architectural design researches reviewed through the study.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1996년도 춘계학술대회 논문집
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• pp.568-573
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• 1996

In this paper, A design strategy of the Surface Mounting Device for accurate and better performance is studied. Analytical Modeling. Sensitivity analysis and optimization are being conducted. The ANSYS software and experimental method are used for verification of the analytical equations withboundary conditons. Through the sensitivity analysis, the most dominant design parameters can be detected. The optimum design parameters for performing given performing given perfomances are selected by using the optimization algorithm. The design tool based on the design strategy for the analysis, modeling and optimization will be useful for a re-design and better perofrmance of the SMD.

• 한국정밀공학회지
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• 제14권2호
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• pp.120-128
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• 1997

In this paper, A design strategy of the Surface Mounting Device for accurate and better performance is studied. Analytical modeling, sensitivity analysis, and optimization are being conducted. The ANSYS software and experimental method are used for the verification of the analytical equations with boundary conditions. Through the sensitivity analysis, the most dominant design parameter can be detected. The optimum design parameters for improving the given performances are selected by using the optimiza- tion algorithm. The design tool based on the design strategy for the analysis, modeling, and optimization will be useful for are-design and better improving of the SMD.

• 한국콘텐츠학회논문지
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• 제18권7호
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• pp.28-37
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• 2018

본 논문에서는 실내 인테리어에 적용 가능한 조명 디자인을 기본으로 생각하고 연구하였으며 나아가 근린공원에 설치될 공익시설물을 대상으로 공공디자인의 목적도 함께 연구하여 합리적 사용을 추구하는 모듈형 가변식 실내조명 제품디자인을 연구하고자 한다. 이러한 연구를 위하여 모듈의 기본적인 개념을 알 수 있는 선행연구 고찰과 실내디자인에 적용 가능한 조명과 실내에 대한 선행사례를 분석하였다. 이러한 분석을 토대로 본 연구에서는 모듈개념을 적용한 조명디자인의 새로운 컨셉을 도출을 위해 제품실무 개발을 위한 디자인 방향과 프로세스, 제품보관, 조립, 관리가 편리한 모듈 조립형 디자인을 제시하여 향후 조명디자인 개발에 관련된 합리적 유지관리 방향을 살펴보고 새로운 제품디자인개발에 반영할 수 있는 디자인 개발사례를 제시하였다. 또한 인지전략 프로세스를 통해 디자인을 진행하였으며 이러한 프로세스는 개념적 전략으로 실내환경 분석단계, 조명유지 보수단계, 가변형 메커니즘단계, 감성활성화 단계를 적용하여 연구를 진행하였다. 이러한 단계적특성은 디자인적인 조형적 아름다운과 접목시켜 MLD(Module Lamp Design) 전략을 제시하여 인간이 느낄 수 있는 공간에 대한 자유로운 적용을 모듈제품과 접목시키고 인간의 시각적접근과 바라보며 자유롭게 생각하는 개념적 가치를 담아 MLD인지전략 디자인 프로세스에 적용시켜 개발 하고자 하였다.

• 유통과학연구
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• 제15권1호
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• pp.7-14
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• 2017

Purpose - The purpose of the paper is to examine development strategy that Shanghai port has practiced, and to take out some productive implications to be applied to other port. Research design, data and methodology - The research methods to be applied is first to look into some development progress in terms of trade volumes, and then to review development strategy that is classified with two different aspects, and finally to identify implications. Results - Following the change of economic environment that China has joined to WTO, the way of doing business in Chinese economy has transferred to market economy more closely. Trade volume is higher than before and it attracts to build national infrastructure including port. Development strategy has to be needed to take care of newly faced economic situations, within two aspects, hardware and software approach. Both construction and management are answer to competitive port of Shanghai. Conclusions - From the development strategy of Shanghai port, hardware and software aspects should be emphasized, and it is evident that both trade volume of shipping market and the willingness of port authority have to be getting along with each other in development strategy.