• Journal of Information Technology Applications and Management
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• 제16권1호
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• pp.1-20
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• 2009

Negotiation is a process of reaching an agreement on the terms of a transaction. such as price, quantity, for two or more parties. Negotiation tries to maximize the benefits for all parties concerned. instead of using human-based negotiation. the e-commerce environment provides such an environment as adopting automated negotiation. Thus. choosing agent technology is appropriate for an automatic electronic negotiation platform. since autonomous software agents strive for the best deal on behalf of the human participants. Negotiation agents need a clear-cut definition of negotiation models or strategies. In reality, most bargaining systems embody nearly one negotiation model. In this article. we present a mobile agent negotiation system with reusable negotiation strategies that allows agents to dynamically embody a user's favorite negotiation strategy which can be preinstalled as a component in the system. We develop a prototype system, which is fully implemented in compliance with FIPA specifications, and then. describe the benefits of using the system.

• Nuclear Engineering and Technology
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• 제54권3호
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• pp.877-887
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• 2022

A new reactor concept is described that directly couples a supercritical CO₂ (sCO₂) power cycle with a CO₂-cooled, heavy water moderated pressure tube core. This configuration attains the simplification and economic potential of past direct-cycle sCO₂ concepts, while also providing safety and power density benefits by using the moderator as a heat sink for decay heat removal. A 200 MWe design is described that heavily leverages existing commercial nuclear technologies, including reactor and moderator systems from Canadian CANDU reactors and fuels and materials from UK Advanced Gas-cooled Reactors (AGRs). Descriptions are provided of the power cycle, nuclear island systems, reactor core, and safety systems, and the results of safety analyses are shown illustrating the ability of the design to withstand large-break loss of coolant accidents. The resulting design attains high efficiency while employing considerably fewer systems than current light water reactors and advanced reactor technologies, illustrating its economic promise. Prospects for the design are discussed, including the ability to demonstrate its technologies in a small (~20 MWe) initial system, and avenues for further improvement of the design using advanced technologies.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2005년도 춘계학술대회 논문집
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• pp.473-476
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• 2005

Today's manufacturing industry is facing challenges from advanced difficult-to-machine materials (WC-Co alloys, ceramics, and composites), stringent design requirements (high precision, complex shapes, and high surface quality), and machining costs. Advanced materials play an increasingly important role in modem manufacturing industries, especially, in aircraft, automobile, tool, die and mold making industries. The greatly-improved thermal, chemical, and mechanical properties of the material (such as improved strength, heat resistance, wear resistance, and corrosion resistance), while having yielded enormous economic benefits to manufacturing industries through improved product performance and product design, are making traditional machining processes unable to machine them or unable to machine them economically. In this paper, mechanical characteristic evaluation test of fine powder type WC-Co alloy was accomplished to obtain clear data for miniaturized special die parts machining with high reliability and high quality.

• Current Photovoltaic Research
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• 제9권2호
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• pp.59-73
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• 2021

The purpose of this study is to develop a business model that efficiently converts diesel power generation systems to renewable energy microgrids (MG) in large-scale islands. Most of the previous studies on the conversion of renewable energy MG in islands had limitations dealing with efficiency from the perspective of suppliers. However, the microgrid has the characteristic of getting benefits through the interaction between the consumer and the supplier. In addition, the efficient MG business model from the perspective of new institutional economics is a structure in which consumers and suppliers jointly participate. Therefore, this study assumed that the MG business model in which the supplier's MG and the consumer's community solar participated would benefit all participants, and verified the assumptions using domestic island data. In terms of supplier investment, the cost of power supply (LCOE) of assumed model was calculated to be 14.0% lower than that of the diesel model and 3.7% lower than that of the supplier-only MG model. From the perspective of consumer investment, electricity bills are expected to be reduced by more than 200,000 won per household per year through self-generation of solar power. Social benefits are expected to reduce external environmental costs. The CO₂ emissions of the assumed model were calculated to be 39.5% lower than the diesel model and 1.5% lower than the supplier-only MG model. Therefore, the MG business model with consumer participation proposed in this study is expected to be an efficient alternative to renewable energy MG conversion in domestic islands, and is meaningful as an energy plan that improves the benefits of local residents.

• 벤처창업연구
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• 제13권2호
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• pp.125-137
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• 2018

동일 지역, 직장, 단체에 소속된 사람들에 의하여 조직되고, 운영되는 신협은 고객이 곧 소유자가 되는 협동조합기업으로서 고객이 단순한 거래자 관계가 아니라 신협에 소속되는 특징이 있다. 이러한 신협의 조직적인 특성은 고객과의 관계에 유리한 영향을 미치기 때문에 다양한 관계마케팅 전략을 펼쳐나가는 것이 중요하다. 이에 관계마케팅의 주요 변수인 관계혜택, 고객만족, 장기적 관계지향성을 이용하여 신협에서의 구조적 관계를 살펴보았다. 구체적으로 관계혜택을 확신적 혜택, 사회적 혜택, 특별대우 혜택의 3가지 차원으로 구분하고 고객만족과 장기적 관계지향성과의 인과적 모델을 구조화하여 연구를 수행하였다. 연구를 수행하기 위해 신협 고객을 대상으로 2017년 12월 26일부터 2018년 1월 26일까지 설문을 실시하여 총 360부를 회수하였다. 이중 통계에 활용하기 어려운 14부를 제외하고 346부를 최종 표본으로 선정하였다. 자료는 SPSS 24.0을 활용하여 신뢰도 분석, 탐색적 요인분석, 회귀분석을 하였고, AMOS 24.0을 활용하여 확인적 요인분석, 구조방정식 모형분석을 하였으며, 그 연구결과는 다음과 같다. 첫째, 확신적 혜택은 장기적 관계지향성에 직접적인 영향을 미칠 뿐만 아니라 고객만족을 매개로 간접적인 영향을 미치는 것으로 나타났다. 둘째, 사회적 혜택은 장기적 관계지향성에 직접적인 영향을 미치나, 고객만족을 매개로 간접적인 영향은 없는 것으로 나타났다. 셋째, 특별대우 혜택은 장기적 관계지향성에 직접적인 영향은 없으나, 고객만족을 매개로 간접적인 영향을 미치는 것으로 나타났다. 넷째, 고객만족은 장기적 관계지향성에 긍정적인 영향을 미치는 것으로 나타났다. 본 연구의 시사점으로 신협 고객에게 확신적 혜택을 제공하여 신뢰감과 확신감을 들게 하고, 사회적 혜택을 제공하여 친밀감과 우정의 관계를 구축하며, 특별대우 혜택을 제공하여 욕구를 충족시켜 주면 고객이 단기적이고 일시적인 관점이 아닌 장기적인 측면에서 고객만족을 하게 되고, 결과적으로 신협과 고객과의 장기적인 관계가 구축될 것이라는 점을 제시하였다.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2005년도 지반공학 공동 학술발표회
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• pp.601-612
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• 2005

In mountainous area, Two parallel tunnels have been usually recognized as a road tunnel which has benefits in aspects of cost and stability. However, Design and construction of 2-Arch road tunnel are growing recently due to environmental destruction, compensation of land and difficulty of route separation. As studies are mainly undergoing on only guaranteeing stability and developing a waterproofing-drainage system to avoid water leakage through comprehension for characteristics of 2-arch tunnel behaviors, there is a tendency to evaluate quantity of support by empirical method with a tunnel which has a complicated cross-section and lack of construction ability. In this study, therefore, we made a plan of tunnel cross-section which had shown good construction ability and developed the waterproofing-drainage system which is able to solve the water leakage problem fundamentally by analyzing precedented 2-arch tunnels and investigating their sites in and out of nation. We also determined fixed quantity of support by a large-scale model test and numerical analysis. We want to contribute to 2-arch tunnel design hereafter introducing design procedure and method applied here.

• 대한치과기공학회지
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• 제12권1호
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• pp.23-45
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• 1990

This study aimed at inquiring into the basic theory on co-operative education, grasping and analyzing the present situation of the junior health college, the present condition of co-operative education and into problem. and seeking to find a solution to activate the co-operative edcation of the junior health colleges. For this purpose this study compared the co-operative education system in our country with that of foreign countries revolving around the related literature to co-operative education, analyzed it, and the pointed out its problem. And this study classified into the solution of establishing co-operative education system, the solution of consolidating the on-the-spot training system, the solution to activate the co-operative education of the junior health college. First this study suggested three methods as a part of establishing co-operative education system as below. 1. The need to set up the ideology concerning co-operative education. 2. The construction of the advisory committee for co-operative education. 3. The establishment of an agency for co-operative education. And this study suggested nine methods as the method of consolidating the on-the-spot training as below. 1. The execution of the basic research for the on-the-spot training. 2. The reorganization of the existing curriculum into the curriculum the industrial organization requires. 3. The establishing of the system in a closer cooperation with the industrial organization for the on-the-spot training. 4. The participation in solving commonly the problems of the industrial organization and in education. 5. The establishing of the guidance system assuming exclusive charge of the on-the-spot training. 6. The submission of the evaluation sheet for the on-the-spot training. 7. The extension of the period of the on-the-spot training and the reorganization of an educational system. 8. The persistent support for the on-the-spot training at the governmental dimension. 9. The securing of the educational dost spent on the on-the-spot training and the imposition of benefits on the industrial organization.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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• pp.402-403
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• 2009

A variety of power reduction technologies is introduced and the benefits of the technologies are discussed. PenTile$^{(R)}$ DBLC (Dynamic Brightness LED Control) combined with SABC (Sensor-Based Adaptive Brightness Control) enables to achieve the average LED power consumption to one third. The panel power reduction of 25% can be achieved with low power driving technology, ALS (Active Level Shifter). MIP (Memory In Pixel) is expected to be useful in transflective display because the whole display area can be utilized in reflective mode with power consumption of 1mW.

• KIEE International Transactions on Power Engineering
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• 제5A권3호
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• pp.207-213
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• 2005

This paper deals with the development of benchmark systems based on the Korea Electric Power Corporation (KEPCO) system. A novel procedure for constructing a dynamic equivalent system of the KEPCO system is proposed. By using such a system, various scenarios can be simulated and compared with the original system. The results of the simulation show the benefits of the proposed equivalent system and its validity is confirmed by applying it to the KEPCO system.

• 한국HCI학회:학술대회논문집
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• 한국HCI학회 2009년도 학술대회
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• pp.1095-1100
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• 2009

메타버스 공간 혹은 다자간 온라인 게임형 커뮤니케이션을 이용한 공동창작의 특성이나 장점에 대한 연구와 관심이 증가하고 있다. 본 연구는 제안된 공간에서 창작이라는 공통의 목적을 달성하기 위하여 서로의 아이디어와 기술, 그리고 예술적 창작물에 대한 의사교환을 시도하여, 각자의 창작 활동이 더욱 풍부하게 발전할 수 있도록 협업하는 참여적 디자인 실험을 진행하였다. 실험에 참가한 참가자들은 세컨드라이프에서 자신의 예술활동 혹은 음악활동을 목적으로 활발하게 활동하는 25 명의 그룹참여자들을 대상으로 진행되었다. 이들은 세컨드라이프 상에 구축된 갤러리 메타포를 중심으로 사진작가, 화가, 사운드 아티스트, 아키텍트, 콜렉터 등의 역할을 수행하였고, 연구 기간 동안 5 명의 예술가가 직접 자신의 전시회를 제안된 공간에서 진행하도록 하였다.