• Journal of Information Technology Applications and Management
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• v.16 no.1
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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.

• Proceedings of the KIEE Conference
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• 2007.10a
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• pp.323-324
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• 2007

For the efficient and accurate development of a biped humanoid robot, systematic humanoid development platform is a necessary component in building the development environment. The simulator is a significant tool to develop a biped humanoid robot. In this paper, we first present a method for constructing a humanoid simulator that can be easily applied to an actual humanoid. Easy transplantation into an actual humanoid increases the efficiency of simulator and the development speed. Systematic structure, closely modeling and prediction of an actual humanoid is a significant part of the simulator to set a goal. Using the simulator, we can predict the motion of an actual humanoid. The functions and the effectiveness of the developed simulator were evaluated through simulated motions and walks.

• Proceedings of the Korea Information Processing Society Conference
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• 2002.04a
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• pp.453-456
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• 2002

J2EE(Java 2 Enterprise Environment) 프레임워크는 확장성 있는 다단계(multi-tie.) 분산 어플리케이션을 만들기 위한 컴포넌트 소프트웨어 개발의 주요 기술로 자리를 잡고 있다. 따라서 컴포넌트 기반의 소프트웨어 개발 도구에서도 EJB 를 포함한 J2EE 프레임워크 개발을 필수적으로 지원하여야 한다. 본 논문에서는 J2EE 프레임워크 개발 및 적용에 있어서 모델링이나 개발 못지 않게 중요한 단계인 컴포넌트에 대한 표준 디스크립터 작성 및 어플리케이션 서버 탑재에 대한 확장성 있고 자동화된 방법을 제안한다.

• Proceedings of the KIEE Conference
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• 2003.07a
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• pp.348-350
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• 2003

In recent years, with the continuous development of modem power system, the need for high performance protection to meet the customers' requests for more stable and reliable power supply has become increasingly emphasized. So, there is urgent need for a proper testing platform about not only existing digital protection relay but also new digital protection relay on the transmission line. It is also dynamic-state test which can test the performance of digital relay. This paper suggests basic system model for testing transmission line protection using PSCAD/EMTDC, and presents the process of the component modeling in the basic system.

• Journal of the Korean Chemical Society
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• v.62 no.3
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• pp.187-190
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• 2018

A three-component coupling reaction of phenylacetylene, p-toluenesulfonyl azide, and water through copper catalysis is described to provide knowledge of spectroscopy and catalytic reactions and to introduce current research topics in organic chemistry for second-year undergraduate students. In the presence of stoichiometric amounts of phenylacetylene, p-toluenesulfonyl azide, and triethylamine, the reaction was performed with 4 mol% CuCl in water as the sole solvent and was completed in 1.5 h. A practical purification method and recrystallization of the crude reaction mixture resulted in the rapid isolation of the desired product with yields of 42~65%. Students characterized 4-methyl-N-(phenylacetyl)benzenesulfonamide by using melting-point determination, infrared spectroscopy, and nuclear magnetic resonance (NMR) spectroscopy. This experimental procedure and spectroscopic data analysis will serve as a platform for students to apply classroom knowledge in practical state-of-the-art research.

• Journal of Institute of Control, Robotics and Systems
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• v.13 no.12
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• pp.1179-1185
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• 2007

This paper presents a new approach to automotive embedded systems development and validation. Recently automotive embedded systems become even more complex and the product life cycle is getting reduced. To overcome these problems AUTOSAR, a standardized software platform and component based approach, was introduced. Model-based approach has been widely applied in the development of embedded systems and has strong benefits such as early validation and automated testing. In this paper cooperative development and validation of AUTOSAR and model-based approach are introduced and automated testing techniques are proposed. With the proposed techniques we can improve complexity management through increased reuse and exchangeability of software module and automated testing is realized.

• Journal of Ocean Engineering and Technology
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• v.11 no.3
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• pp.8-19
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• 1997

In this study an adequate type of offshore structure at the Sakhalin region as cold region is proposed and its structural design results are presented based on the reliability analysis. Structural safety assessment has been carried out for the proposed offshore structure at the Sakhalin area as designed by the reliability method. And a rational design procedure is presented based on the reliability analysis. Followings are drawn through the present study : - Four colum TLP structure is proposed as an adequate offshore structure type at the cold region like the Sakhalin region and the reliability-based structural design results are presented. It is seen that the proposed type is a more adequate and economic than the fixed type. - Safety assessment of the proposed structure applying the extended incremental load method is performed. - Referring the allowable safety level for offshore structures it has been found present TLP structure has sufficient structural safety at the system level as well as at the component level.

• Journal of Power Electronics
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• v.15 no.1
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• pp.39-53
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• 2015

This paper presents the regulation of the output voltage and inductor currents in a Single Ended Primary Inductor Converter (SEPIC), operating in the continuous conduction mode (CCM) using a sliding mode controller. Owing to the time varying nature of the SEPIC converter, designing a feedback controller is a challenging task. In order to improve the dynamic performance of the SEPIC, a Sliding Mode Controller (SMC) is developed. The developed SMC is designed by using a state space average model. The performance of the developed controller with the SEPIC converter is validated at different working conditions through Matlab simulations. It is also compared with the performance while using a PI controller. The results show that the designed controller gives very good output voltage regulation under different operating conditions such as a varying input voltage, changes in the load and component variations. A 48V, 46W experimental setup for has been developed in an analog platform to validate the performance of the proposed SMC.

• Proceedings of the Korean Information Science Society Conference
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• 2005.07b
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• pp.310-312
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• 2005

컴포넌트 기반 개발 (CBD) 기술은 재사용을 통해 개발 노력과 시간을 줄여주는 기술로서 학계에서 활발한 연구가 이루어지고 있으며, 산업계의 기본 개발 패러다임으로 자리잡고 있다. 한편, 개방형 소프트웨어로 개발된 도구 및 어플리케이션 개발 통합 환경인 Eclipse 플랫폼이 각광 받고 있으며 Eclipse 플랫폼은 플러그인의 조립이라는 형태로 구성된다. Eclipse 플러그인은 큰 재사용 단위를 가지고 조림을 통해 구성되는 CBD의 컴포넌트와 비슷한 특성을 갖는다. 기존의 부족한 특정 플랫폼 기반의 컴포넌트 설계 및 구현 지침에 관한 연구를 Eclipse 플랫폼 기반의 CBD 기법을 연구함으로써 해결할 수 있을 것이다. 따라서, Eclipse 의 플러그인에 기반한 CBD 개발 기법에 대한 연구가 필요하다. 본 논문에서는 CBD 기술과 Eclipse 플랫폼에 대해서 알아보고 CBD 플랫폼과 컴포넌트의 요구사항을 분석하고 이러한 요구사항들이 어떠한 기법을 통하여 Eclipse 플랫폼에 적용 가능한지에 대해 알아본다. 끝으로 기존의 CBD 플랫폼에서의 개발과 비교하여 Eclipse 플랫폼을 사용함으로써 얻을 수 있는 장점에 대해서 알아본다.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2005.11a
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• pp.429-436
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• 2005

소프트웨어 아키텍처의 개념은 2000년경부터 ITA(정보 기술 아키텍처) 또는 소프트웨어 아키텍처라는 이름으로 소프트웨어 아키텍처 산업계, 학계에서 활발한 연구와 실제 프로젝트에 적용이 본격화 되고 있다. 소프트웨어 아키텍처는 시스템 관련자들 간의 이해를 높이는 수단이 되며 개발시스템의 분석, 설계, 개발, 테스트, 유지보수 프로세스의 품질을 좌우하는 주요한 요소로서 전 개발공정을 추적 가능하게 하는 장점을 지니고 있다. 또한 향후 재사용 가능한 시스템의 산출물로서 d용하게 된다. 시스템 전체 구조관점에서의 중요성을 인식하여 RUP방법론을 테일러링 함으로서 J2EE플랫폼의 소프트웨어 아키텍처 프로세스와 핵심요소를 제안한다.