• 전력전자학회논문지
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• 제18권4호
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• pp.367-375
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• 2013

The mechanical vibration of a PM synchronous motor at low speeds due to the back emf harmonics may be serious problems in some application such as MDPS(Motor driven power steering), electric vehicles. In this paper, torque ripple reduction for an interior PM synchronous motor including back emf harmonics is proposed. The dq flux linkage harmonics of the permanent magnet are estimated on real time by using the dq currents of the real system and the model of the MRAS observer. Based on the estimated flux linkage harmonics, the dq harmonic currents for reducing the torque ripples are compensated on the dq reference currents. The estimation of the flux linkage harmonics by the MRAS observer and the torque ripple reduction of the proposed algorithm was verified by the simulation and experiment.

• Asia pacific journal of information systems
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• 제15권2호
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• pp.171-193
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• 2005

Small firms are considered as the last mile in electronic networks of business enterprises. Since small firms lack in their resources and capabilities for IT deployment, it seems a challenging project to make them electronically linked to their trading partners. This study aims to investigate the factors that influence the intent of small firms to adopt electronic linkage to their trading partners. This study considers the context where small firms already have transaction relationships with partner firms and where their adoption of electronic linkage may influence the nature and performance of the transactional relationships. This study considers the expected value of electronic linkage and the joint actions of the trading firms as the major factors. Its research model also includes traditional factors such as influences from the industry and the trading partner, the support of CEO, and the readiness of the trading partner. Based on the survey data from more than 1000 small firms, the present study performs regression analysis and finds that all but one factor are significant in explaining the variations in the adoption intention of small firms. The exception is the joint action, which is shown to decrease the intention. Based on the results, this study offers business and policy implications that would be useful to business managers and policy makers.

• 대한인간공학회지
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• 제31권3호
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• pp.463-467
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• 2012

This study aims to empirically investigate population stereotype of burner-control linkage of four-stove gas range for Koreans. Background: The previous studies' results for gas range stereotypes were different depending upon methods adopted, i.e., whether using questionnaires, computer simulation or physical models. It is known that the physical model experiment should not be methodologically replaced by the computer simulation or paper-and-pencil tests. Stereotype of gas range for Koreans was surveyed based on questionnaires, but has not been dealt with by using physical models. Method: An experiment was conducted to investigate stereotype of four-burner gas range, in which 32 subjects participated and a real gas range available in the market was bought and used. Four types of burner-control linkage were used as independent variable, and reaction time as dependent variable. Results: ANOVA revealed that four types of burner-control linkage and subjects' gender were not significant on reaction time. Duncan's multiple range test showed that reaction times for type III was significantly lower than those for the other three types of burner-control linkage(${\alpha}$=0.05). Conclusion: It is concluded based on the results of this study that stereotype of gas range for Koreans is type III. This is in agreement with results of existing studies using questionnaire survey, while different from those based on physical models. Application: The results of this study would be useful as an ergonomic guideline when designing gas ranges or similar equipments for minimizing operation errors.

• 임산에너지
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• 제20권1호
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• pp.35-41
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• 2001

리그닌 모델화합물 Ⅰ-Ⅳ의 시료를 315℃에서 열분해 시킨 결과, 리그닌 모델호합물 Ⅰ, Ⅱ의 열분해에서는 guaiacol이 0.47mol, DMP가 0.57mol로, DMAP는 0.12와 0.23mol로 각각 생성되었으며, 리그닌 모델화합물 Ⅲ, Ⅳ의 열분해에서는 guaiacol의 생성이 0.26mol, DMP가 0.30mol로 TMAP는 0.09mol 과 0.15mol이 각각 생성되었다. 리그닌 모델화합물 열분해 메커니즘으로서는 우선 탈수되고, 이어서 β-O-4 결합이 개열되어 guaiacol, DMP, DMAP와 TMAP가 생성되는 것을 알 수 있었다.

• 아태비즈니스연구
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• 제2권1호
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• pp.1-22
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• 2011

Chamber of commerce and industry plays important role for development of business community and creating vibrant competition. Present paper compares chambers operations in Bangladesh, especially, Sylhet Chamber of Commerce and Industry(SCCI) by reviewing global models of chambers practices. The study identifies important gaps between international standards and Bangladesh practices. Mostly practiced chambers model in the world are: Continental Model, Anglo-Saxon Model and Mixed model or Asian model. Like other Asian countries, chambers in Bangladesh including SCCI, have been following Mixed Model. The empirical study found that SCCI is performing different developmental functions like accumulating members, collecting revenue, fulfilling corporate social responsibility and providing business development services to its members and business community. The notable constraining factors of SCCI operations are: short term orientation in assembling members, limited functional activities, lack of creative endeavors in diversifying services, linkage between SCCI and academic institutions, poor research involvement etc. The necessary suggestions for improvement of chambers performance include adoption of creative measures in various operations, providing training to the members, assisting entrepreneurs in obtaining industrial finance and extending support in the establishment of specialized industrial zone for attaining long term developmental objectives.

• 한국전자통신학회논문지
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• 제3권4호
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• pp.304-312
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• 2008

본 연구에서는 KIX의 성과분석을 위해, 민간기업과 정부기관 구분하여 분석하였다. 민간기업의 적용되는 BSC 성과분석 4개 관점간의 논리적 연계성(Logical Linkage)이 모든 기업에는 동일하게 적용가능하나, 정부기관에서는 4개의 관점간 논리적 연계성 확보가 곤란하다. 이러한 논리적 연계성 상실은 정부기관의 KIX 사업에 BSC 적용의 제약요인으로 작용한다. 이러한 내부와 외부 고찰 관점과 연계하여 KIX의 BSC 관점은 품질(운영)관점, 이용자(고객) 만족도 관점, 경제적 비용효과(재무)관점으로만 구분해 KIX의 BSC 성과분석의 내외부적 관점에 관한 연계모형과 BSC의 내외부적 관점을 근간으로 KIX의 성과분석 모형을 만들어 KIX 전체 사업에 대한 성과결과를 분석하였다.

• 한국전자거래학회지
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• 제19권4호
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• pp.151-168
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• 2014

국내에서는 한국저작권위원회 주관으로 디지털콘텐츠 식별을 위한 국가디지털콘텐츠식별 체계인 UCI(Universal Content Identifier)와 통합저작권관리를 위한 ICN(Integrated Copyright Number) 식별체계를 운영하고 있다. 그러나 UCI나 ICN은 국제표준 식별체계인 ISRC (International Standard Recording Code)나 ISWC(International Standard Works Code), ISAN (International Standard Audiovisual Number) 등과 같은 국제적인 표준 식별체계와의 연계가 되어있지 않다. 따라서 국내 콘텐츠의 해외시장 진출을 위해서는 해당되는 국제표준의 식별체계 와 연계를 위한 추가의 별도 작업이 요구되고 있으며, 외국에서 판매되는 콘텐츠에 대한 정산을 포함한 통계자료는 국내시스템으로는 통합관리가 불가능하다. 본 논문에서는 UCI/ICN과 국제 표준의 식별체계와의 연계를 위해 국내/외 식별체계 동향을 조사하고, 조사한 국제표준 식별체계 들의 메타데이터와 표준을 분석하여 UCI/ICN과의 연계 방안을 제시한다. 또한 시험 모형을 개발 해봄으로써, UCI/ICN과 국제표준 식별체계와의 연계방법에 관한 연구 방향을 제시하였다.

• 한국융합학회논문지
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• 제9권12호
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• pp.251-258
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• 2018

최근 들어 대학들은 학사구조의 다변화를 추구하고 있으며, 다전공 과정(연계전공, 융합전공, 자율전공, 자기설계전공 등) 도입으로 전공 및 학과 간 상호연계를 기반으로 융합인재양성에 노력을 기울이고 있다. 본 연구는 충청권 4개 대학이 연합으로 추진한 '글로벌 창의융합전공'의 설계 운영과정의 단계별 주요요소를 도출하고, 주요특징을 바탕으로 운영모델과 시사점을 제시하고 있다. 융합전공 운영모델은 대학 간 특화영역 연계를 통한 교육체계(인재상, 교육목표, 역량요소, 교육과정)의 구성하고, 역량요소(창의역량, 융합역량, 문제해결역량, 글로벌역량)를 기반으로 교과 및 비교과프로그램의 연계를 설계하였다. 융합전공 운영모델은 과정 및 단계에 따라 주요활동을 체계화함으로써 운영되고 있으며, 프로젝트 기반의 성과중심 지원프로세스를 구축함으로써 국내외 대회 참가, 국제발명대회 참가, 글로벌 역량강화를 지원하여 창의융합 인재양성에 기여하고 있다.

• Journal of Korea Trade
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• 제25권2호
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• pp.1-21
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• 2021

Purpose - The purpose of this research is to develop two medical tourism system models which explain medical tourism phenomenon with a systemic approach. Design/methodology - This research was conducted by using a qualitative data analysis which mainly refers to previous references of medical tourism in the areas of tourism and medicine. Leiper's tourism system model was utilized as a conceptual framework. In-depth interviews with experts in the field were conducted in order to pretest the models. Findings - This research suggests a medical tourism system framework and a medical service provision framework. The first model presents medical tourism components and their relationships within a framework presented in a diagram. The second model shows the relationships among medical services required by medical tourists, the service providers, and service human resources along with movements of medical tourists. Originality/value - The first model presents a spatial composition of medical tourism components and their relationships, whereas the second model shows the linkage among medical services, the service providers, and relevant service human resources along with time sequential steps of medical tourists. These two models are complementary and may be used as useful tools to observe medical tourism phenomenon with a systemic and holistic approach. These two models may enable stake holders avoid unnecessary confusions and conflicts that result in duplication of government policies and a waste of budget and human resources.

• Journal of applied mathematics & informatics
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• 제26권3_4호
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• pp.493-500
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• 2008

In this paper, we first construct a mathematical model for tagSNP selection based on LD measure $r^2$, then aiming at this kind of model, we develop an efficient algorithm, which is called approximate greedy algorithm. This algorithm is able to make up the disadvantage of the greedy algorithm for tagSNP selection. The key improvement of our approximate algorithm over greedy algorithm lies in that it adds local replacement(or local search) into the greedy search, tagSNP is replaced with the other SNP having greater similarity degree with it, and the local replacement is performed several times for a tagSNP so that it can improve the tagSNP set of the local precinct, thereby improve tagSNP set of whole precinct. The computational results prove that our approximate greedy algorithm can always find more efficient solutions than greedy algorithm, and improve the tagSNP set of whole precinct indeed.