• Journal of Electrical Engineering and Technology
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• 제4권3호
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• pp.330-336
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• 2009

This paper proposes an on-line voltage management and control solution for a distribution system which can improve the efficiency and accuracy of existing off-line work by collecting customer voltage on-line as well as the voltage compensation capability of the existing ULTC (Under Load Tap Changer) operation and control strategy by controlling the ULTC tap based on pattern clustering and recognition. The proposed solution consists of an ADVMD (Advanced Digital Voltage Management Device), a VMS (Voltage Management Solution) and an OLDUC (On-Line Digital ULTC Controller). An on-line voltage management emulator based on multi-thread programming and the shared memory method is developed to emulate on-line voltage management and digital ULTC control methodology based on the on-line collection of the customer's voltage. In addition, using this emulator, the effectiveness of the proposed pattern clustering and recognition based ULTC control strategy is proven for the worst voltage environments for three days.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 1997년도 추계학술대회발표논문집; 홍익대학교, 서울; 1 Nov. 1997
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• pp.162-165
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• 1997

본 연구에서는 off-line 스케쥴링과 on-line 스케쥴링을 함께 고려하는 스케쥴링 메카니즘에 대해 설명하였다. 일반적으로 스케쥴링은 off-line 문제를 주로 다룬다. 그러나, off-line으로 생성된 스케쥴은 실시간으로 발생하는 여러 문제들(기계 고장, 긴급 주문등) 때문에 현실과 맞지 않게 되어 유용성이 떨어지는 경우가 자주 발생한다. 따라서 off-line 스케쥴링의 결과를 수행할때 위와 같은 문제가 발생할 경우, 스케쥴의 변화를 흡수하면서 off-line 스케쥴링의 결과를 최대한 유지할수 있는 on-line 스케쥴링에서 이 같은 스케쥴 실행시의 문제를 해결할 수 있도록 bidding 알고리즘을 사용하는 방법을 제시하였다.

• Agribusiness and Information Management
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• 제2권1호
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• pp.31-73
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• 2010

On-line shopping mall has become a powerful marketing tool recently. On-line shopping malls provide information for consumers about goods and influence the decision-making process of purchasers. Therefore many local government made on-line shopping malls for advertising agricultural production in the region. However, in the face of problems related with effectiveness on shopping mall management, most of on-line shopping malls has been managing by private sector actually. This study aims to propose the plans for development of the on-line shopping malls. For this purpose, this study investigated current management status of the shopping malls and conducted case study on-line shopping malls.

• 경영과정보연구
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• 제14권
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• pp.195-214
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• 2004

The purpose of this study is to find proper strategies for the reinforcement of brand image in the online insurance retail stores. First, from theoretical backgrounds, I have investigated acquisition effects, strategies for changing brand image, decisions on a product position and product differentiation under various strategic marketing factors based on the reinforcement strategies of brand image. Second, there is a significant difference between corporate/on-line insurance retail store names recalled first and brand names recalled first. Third, in terms of consumers' preferences, there exists a substantial difference between corporate/on-line insurance retail stores and brands. From this study, the following conclusions are drawn. First, on-line insurance retail stores and brand image should be carefully developed and used as a tool to secure competitive advantages. Second, on-line insurance retail stores and brand image should be considered and continuously enhanced as an important asset for the on-line insurance retail stores. As the importance of brands grows, brand management is an essential step for powering brands.

• 조명전기설비학회논문지
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• 제19권1호
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• pp.162-168
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• 2005

본 논문은 조명시설 관리에 따른 유형을 파악하고 이에 맞는 관리 모델을 제안하며, 각 관리 모델에 적합한 온라인/오프라인 조명시설 관리 시스템의 개발에 관하여 연구한 내용이다. 또한 연구 결과물의 효용성을 높이기 위해 실제 사용하는 양식을 기초로 개발하여 새로운 시스템의 적용시 적응이 용이하도록 하였다. 제안된 관리 모델에 따른 온라인/오프라인 조명시설 제어를 통하여 조명시설 정보의 효과적인 운용이 가능하게 하였으며, 인력 및 유지보 수비를 줄이는데 기여할 수 있을 것으로 기대된다.

• 한국실천공학교육학회논문지
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• 제3권1호
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• pp.84-91
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• 2011

급변하는 산업 환경에 대응하여 보다 경쟁력 있는 공학인의 양성이라는 측면에서 경영 마인드를 함양시키는 공학 소양 교육의 필요성이 대두 되고 있다. 본 연구에서는 공과대학 교육 내실화와 수요자 중심의 공학교육과정 개발, 공학교육인증 획득의 필요성 증대에 부응하여, 산업체에서 요구하는 경영마인드를 갖춘 공학도의 양성을 목표로 공학도를 위한 경영학 교과목 개발 사례를 고찰하였다. 교과목 개발 및 운영전략으로 강좌 간 강의품질 편차의 최소화를 위해 표준화된 온라인 콘텐츠와 교안을 개발하였으며, 학습효과를 극대화하기 위해 온 오프라인 혼합강의를 구현하여 적용하였다. 본 연구의 결과 및 교과내용과 교수방식은 타 공학대학의 공학경영교육 설계 시 참조모델로서 효과적으로 적용될 수 있다.

• 가족자원경영과 정책
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• 제6권1호
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• pp.53-72
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• 2002

The purpose of the research is to investigate the amount of private education expenditures for on-line education and the factors which affect on-line education expenditures and its decreasing effect of private education expenditures. The results of this study can provide basic materials to found policy to decrease private education market and private education expenditures. The sample of this study was 484 parents who had an experience using on-line education for their children being in mainly constituted by classes of pre-school over and less than high school student. The results was as follows. First, education expenditures for on-line education are 64,900won and the English and the Mathematics as main reasons using on-line education were that it is available for 24 hours and cheaper than off-line education. The parents got information for on-line education by internet, mass media and their next-door neighbors. Second, the significant variables which affect on-line education expenditures and its decreasing effect of education expenditures were the children's school level and financial related factors.

• 디지털산업정보학회논문지
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• 제19권2호
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• pp.79-87
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• 2023

On-line learning has been adopted as a major educational method due to the COVID-19 pandemic. Students and faculties got accustomed to on-line educational environment as they experienced it during the COVID-19 pandemic. Development of various technologies and social requirement for educational renovation lay groundwork for on-line learning as well. Therefore, on-line learning or blended learning will be likely to go on after the end of COVID-19 pandemic and it is necessary to prepare the guidelines for effective utilizing on-line learning. The primary purpose of this study is to examine the learning behaviors and the learning effects by using LMS data. Learning behaviors were measured in terms of learning time and access frequency for pre-recorded video lectures targeting computer-practice classes. The results of empirical analysis reveal that frequency was the significant predictor of course achievements but learning time was not. The findings of empirical analysis will provide insights that the effective planning and designing on-line classes based on learning behaviors are key to enhancing learning effects and learner's satisfaction.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 2006년도 추계학술대회
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• pp.196-200
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• 2006

인터넷의 보급으로 인해 Tele Marketing과 Direct Marketing을 주로 하던 보험업의 시장 환경은 on-line판매라는 새로운 판매 채널을 크게 변하였다. 보험업의 경우 인터넷의 도입으로 인해 보험소비자는 가격 및 상품 정보를 보다 쉽게 획득할 수 있고, 비교 견적을 통하여 자신에게 보다 합리적인 의사결정을 할 수 있다. On-line 환경의 급진전에 따른 자동차 보험시장에서 후발주자에 해당하는 on-line 자동차 보험 회사의 급격한 고객 확대는 주목할 변화이다. 따라서 off-line 보험시장을 대체할 수 있는 on-line 보험의 성장 가능성 예측이 중요하다. 본 연구에서는 on-line 자동차 보험사에 대한 분석과 통계자료를 바탕으로 시스템 다이내믹스 기법을 이용하여 on-line 자동차 보험의 성장에 대해 분석 해 보았다.

• Journal of information and communication convergence engineering
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• 제8권6호
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• pp.721-724
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• 2010

In a network router, packet loss may occur when it overflows due to sudden burst traffic. This paper studies how much large buffers are required to eliminate the packet losses. There are buffers on which packet arrive and one output port to which a packet is transmitted at a time. The buffer management algorithm should determine one of the buffers whose packet is transmitted to the output port at each time. The front packet belonging to the buffer determined by the algorithm is transmitted. The goal is to minimize the sum of the lengths of buffers to transmit all the packets. We provide an optimal off-line algorithm and also we show the lower bounds of on-line algorithms. The on-line algorithm has no prior information of the packets having arrived in the future. Its performance is compared to that of the optimal off-line algorithm.