• Journal of Power Electronics
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• 제17권1호
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• pp.67-75
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• 2017

Due to the excessive zero-sequence voltage in dual three-level inverter fed open-end winding induction motor systems, zero-sequence circumfluence which is harmful to switching devices and insulation is then formed when operating in a single DC voltage source supplying mode. Traditionally, it is the mean value instead of instantaneous value of the zero-sequence voltage that is eliminated, through adjusting the durations of the operating vectors. A new strategy is proposed for zero-sequence voltage elimination, which utilizes unified voltage modulation and a decoupled SVPWM strategy to achieve two same-sized equivalent vectors for an angle of $120^{\circ}$, generated by two inverters independently. Both simulation and experimental results have verified its efficiency in the instantaneous value elimination of zero-sequence voltage.

• Journal of Information Technology Applications and Management
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• 제22권4호
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• pp.205-224
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• 2015

Information System is a critical success factor for overcoming the limitations of asset and capacity of Small and Medium Enterprises (SME), and for acquiring competitiveness. Although, the rate of adopting information system by SME has grown, the rate of its utilization has been stagnant. The purpose of this study is to identify the influencing factors that increase SME's information system utilization. We identify perception of strategic value, supplier's support capacity, and organizational characteristic by examining previous researches on information system utilization by SMEs, and verify their the influencing relationship with the information system utilization. This study verifies the research model and hypothesis using structural model. A date-set of 1209 samples from a survey on employees in charge of information system of SME was applied in verifying the research hypothesis. The result of this study shows that the information system utilization influences perception of strategic value and support of supply company, and partly, the structural characteristics. This study presents directions to establish strategy and policy making, and theoretically presents core factors of SME's information system utilization.

• Journal of Power Electronics
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• 제16권3호
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• pp.936-945
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• 2016

Large magnitude common-mode voltage (CMV) and its variation dv/dt have an adverse effect on motor drives that leads to early winding failure and bearing deterioration. For matrix converters, the switch states that connect each output line to a different input phase result in the lowest CMV among all of the valid switch states. To reduce the output CMV for matrix converters, this paper presents a new space vector modulation (SVM) strategy by utilizing these switch states. By this mean, the peak value and the root mean square of the CMV are dramatically decreased. In comparison with the conventional SVM methods this strategy has a similar computation overhead. Experiment results are shown to validate the effectiveness of the proposed modulation method.

• 디지털융복합연구
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• 제17권12호
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• pp.481-488
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• 2019

디자인 교육의 변화가 요구되는 것은 산업의 가치 변화와 시장의 요구가 혼재되어 나타나는 현상이다. 오늘날 디자인 산업에 영향을 미치는 외부적 요건의 변화와 내부적 가치 변화는 소비자 중심의 디자인에서 이해관계자 중심의 디자인으로 가치가 전이되고 있다. 이러한 변화의 중심에서 본 연구는 디자인 교육의 분야별 특성에 부합하는 교육적 매커니즘의 내용적 제안이 목적이다. 디자인 특성화는 '디자인+비즈니스'의 개념으로 디자인의 고유 기능인 스타일 개발과 마케팅, 경영 전략, 창업 등을 결합하여 창의적 사고와 전략적 사고를 융합하여 활용함으로써 디자인 시너지의 극대화를 추구하는 새로운 영역을 뜻한다. 따라서 디자인 특성화는 우선 경제적 가치에서 교육의 정책을 실현해야 하며 이전의 도제적 교육관에서 벗어나 합리성과 효율성을 제고하는 디자인 프로세스로 전환되어야 한다.

• 한국기록관리학회지
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• 제8권1호
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• pp.45-63
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• 2008

본고에서는 민주화운동기념사업회 사료관 소장 사료를 토대로, 매뉴스크립트 평가체계 구축 사례를 제시하였다. 민주화운동 사료 평가체계는 가치 선별 논리를 지향하면서도, 가치의 경중에 따른 관리조치 차별화를 통해 사료관리에 소요되는 인적 물적 자원의 활용성을 최적화시킨다는 전략을 구현하였다. 그동안 중복본 위주의 폐기대상을 골라내는 소극적 선별 논리를 넘어 사료의 가치를 기반으로 차별화된 관리 프로세스를 설계하였다는 점에서, 원질서가 부재한 방대한 양의 기록물 처리에 당면하여 한정된 자원 활용상의 효용성을 추구하는 매뉴스크립트 기관들에 좋은 선례를 제공해준다.

• The Journal of Asian Finance, Economics and Business
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• 제8권4호
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• pp.105-112
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• 2021

This study aims to find empirical evidence of the effect of increasing income on the potential transfer of wealth from manufacturing companies that go public to stakeholders. Earnings management with an accrual approach with the Modified Jones model is an identifier of the availability of earnings management practices, without paying attention to both positive and negative symbols. The interpretation of the results of the discretionary accrual measurement between positive and negative symbols has different meanings. Positive discretionary accruals indicate that management uses income-increasing techniques. Meanwhile, negative discretionary accruals indicate that management uses income-reducing techniques. Income-increasing techniques tend to be viewed as opportunistic behavior of managers. This study used 111 data from manufacturing companies listed on the IDX (Indonesia Stock Exchange) from 2015-2018. Path analysis is used to test the hypothesis. The results of this study are in line with the point of view of management strategy, increasing income is used as a way to transfer potential welfare from the company to stakeholders. Social welfare (tax) and managerial remuneration are proven to be mediators in increasing the effect of increasing income on future company value. Further research can complete the potential welfare transfer against the shareholders related to income-increasing strategy.

• 품질경영학회지
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• 제50권4호
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• pp.843-861
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• 2022

Purpose: This study explores the impact of digital transformation (DT) strategies on gaining a competitive advantage in interactive educational services. Methods: We develop a service value proposition model by analyzing educational service elements to confirm the impact of DT in the classroom through case studies. This study focuses on educational services that DT has a positive impact on organizational competitiveness by providing opportunities for customers to engage in operational processes. This case study summarizes competitiveness using SWOT (strengths, weaknesses, opportunities, and threats) analysis. Results: The findings of the case study indicate that DT-enabled competitive factors contribute to an organization's competitive advantage. The study results present key resource as social cloud services, data combination, content sharing, and products/services. The online application that collects user data about education and shares class and evaluation information creates a new class operational process in the field of educational service for a value proposition of collection-merging-sharing with social cloud function. Conclusion: The results of this study can be used as a good guideline for educational service providers interested in applying DT for improved customer satisfaction and educational organizations' competitiveness. In addition, the study findings provide theoretical and practical implications on SWOT approaches to changing the educational service provision ways through digital transformation.

• The Journal of Asian Finance, Economics and Business
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• 제9권2호
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• pp.121-131
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• 2022

The goal of the study was to see how quality management (QMA), strategy (STR), and innovative capability (INC) influence the competitive advantage of a Thai information communication technology (ICT) firm (COA). The researchers collected 431 surveys from Thailand's owners and managers employed in ICT enterprises from the beginning of June 2021 to the end of September 2021using diverse sample strategies. A questionnaire with an index of item-objective congruence (IOC) value of 0.60-1.00 and a reliability value of 0.92-0.96 was used as the research tool. Participants in the survey were requested to fill out a seven-level opinion survey posted on Google Forms. A latent variable structural equation model (SEM) path analysis using LISREL 9.1 was used for the four latent variables, 31 manifest variables, and the five hypotheses testing. The analysis showed that all three causal variables positively affected COA, which had a total effect (TE) R² value = 80% when combined with the other latent variables. Moreover, the values for the latent variables when ranked by total effect (TE) were STR, QMA, and INC with TE values of 0.95, 0.89, and 0.25, respectively. Finally, there were very strong influences from COA to STR (0.95), INC to QMA (0.86), and STR to QMA (0.71).

• 디지털산업정보학회논문지
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• 제19권4호
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• pp.179-192
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• 2023

ESG is the hottest topic in recent business management or business administration. In particular, with the release of the IPCC's 6th comprehensive report in 2023, environmental issues have been further raised around the world, and ESG management for sustainable and permanent companies is accelerating by improving social and governance structures, including the environment, and thereby enhancing corporate value. This case study is analyzed based on the theory of sustainable growth, creating shared value, and corporate social responsibility. This study focuses on the case of Samsung Biologics, which is pursuing sustainable growth and management through ESG management. Samsung Biologics is the first Korean company to win the "Terra Carta Seal" award, part of a sustainable market initiative to respond to climate change, and externally, it has acquired the Dow Jones Sustainability Index, acquired the KCGS ESG comprehensive evaluation A grade, acquired the CDP B grade, and acquired the EcoVadis Gold grade. It has joined the Sustainable Market Initiative launched by King Charles III since the World Economic Forum in 2020 to chair the Supply Chain. It has joined RE100, TCFD, and UN Global Compact to lead sustainable management through ESG activities. Therefore, we would like to take a practical approach to ESG management strategies for sustainable growth through the example of this company.

• 대한지역사회영양학회지
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• 제11권2호
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• pp.253-260
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• 2006

The purpose of this study was to suggest menu pricing strategy based on understanding about customer perceived value of products and services. The technique known as PSM (Price Sensitivity Measurement) was used for analysis of price sensitivity for 3 menu items of a family restaurant in Seoul. A questionnaire was developed through literature review and modified after pilot test. Questionnaires for the main survey were distributed to 250 customers on their visit to the restaurant, and a total of 138 questionnaires were used for analysis (55.2%). The statistical analysis of price sensitivity was conducted using PSM, and descriptive analyses were conducted using SPSS Win (12.0). The main results of this study were as follows: the price sensitivity of beef tenderloin steak was higher than two other menus and the stress range of teriyaki chicken was almost 0, that is, the price sensitivity of teriyaki chicken was very low. Present menu prices of 3 menu items were within the range of acceptable prices, but had some distances from the optimal pricing point. From the result of this study, it was concluded that price adjustment or price promotion strategy would be effective for increase in sales of beef tenderloin steak, and marketing strategies to enhance consumers' perceptions of value should be conducted for all menu items by situations. Overall, PSM technique could be a helpful tool for researchers and managers of foodservice organizations to understand how consumers' perceptions of value are affected by the interaction of price and quality.