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김진흥,구형서,윤형석,안건태,유양우,이명준,Kim, Jin-Hong,Koo, Hyeong-Seo,Yun, Hyeong-Seok,An, Geon-Tae,Yu, Yang-U,Lee, Myeong-Jun 한국정보처리학회 2001 정보처리학회논문지B Vol.8 No.6
Jini 구조의 네트워크 플러그 앤 워크(Network Plug and Work)기능은 분산 응용을 위하여 간단하면서도 유연한 네트워크 환경을 제공하고 있으며, 이를 통하여 이동에이전트 시스템의 동적인 등록 및 소재 파악의 기능과 에이전트의 활동에 유용한 서비스들의 동적 제공이 용이하게 지원될 수 있다. 본 논문에서는 Jini 기반 이동에이전트 시스템인 JMoblet 시스템에 관하여 기술하고 있다. JMoblet 시스템은 이동에이전트 시스템의 기본 기능인 에이전트 생성, 관리, 전송, 위치 파악 및 에이전트간의 통신 기능을 제공하고 있으며, 나아가 이동에이전트 시스템의 신뢰성을 위하여 예외 상황 처리 및 이동에이전트 시스템의 영속성 지원 기능을 제공하고 있다. Jini architecture's Network Plug and Work provides simple and flexible network environment for distributed applications. Through the Jini technology, facilities for dynamically registering and locating mobile agent services can be easily supported, as well as the services useful for activities of mobile agents can be dynamically supported. In this paper, we describe a Jini-based mobile agent system named JMoblet, which provides the basic functions of a mobile agent system such as creation, control, transfer, location and communication among agents. To increase the reliability of the system, it also provides exception handling and persistence of the mobile agent systems for reliability.
김진흥,이상미,남주현,조영준,김주훈,이재열,강호정,김세훈,김훈태,박흥목,김정안 한국고분자학회 2011 Macromolecular Research Vol.19 No.7
In this paper, a useful synthetic method for poly(ethylene oxide)-based block copolymers and their applications for preparation of iron oxide nanoparticles were introduced. Poly(ethylene oxide-b-N-phenylmaleimide) was first synthesized by anionic block copolymerization of ethylene oxide and N-phenylmaleimide (N-PMI) using mixed alkali metal alkoxides via the sequential monomer addition technique in a mixture of benzene dimethylsulfoxide (DMSO)/tetrahydrofuran (THF) (30/5/6~20, v/v/v) at room temperature. Reductive deimidation of the resulting block copolymers under different reaction conditions using hydrazine monohydrate led to the formation of the corresponding water-soluble poly(ethylene oxide-b-maleic hydrazide) under acidic conditions and poly(ethylene oxideb-maleic acid) under basic conditions. Both were found to be very efficient stabilizers to prepare superparamagnetic iron oxide nanoparticles.
김진흥,정낙규,김창호 한국에너지학회 2005 에너지공학 Vol.14 No.1
본 연구는 저온축열물질로서 TMA(Tri-methyl-amine, (CH3)3N)를 20~25 wt%로 포함하고 있는 TMA-물계 포접화합물의 냉각특성에 대하여 냉열원온도 -5oC에서 실험적으로 연구를 수행하였다. 연구결과, TMA의 질량농도가 증가할수록 상변화온도와 비열이 증가하였으며, 과냉도가 감소하고 액상유지시간이 단축되었다. 특히, TMA 25 wt%를 포함한 TMA-물계 포접화합물은 상변화온도 평균 5.8oC, 과냉도 8.0oC, 액상유지시간 10분, 비열 4.099 kJ/kgoC를 나타내었다. 본 연구의 결과로부터 TMA-물계 포접화합물은 물보다 높은 상변화온도를 나타내었으며, 과냉도가 감소하고, 액상유지시간이 단축되는 과냉각 억제효과를 확인할 수 있었다.
김진흥 昌原大學校 基礎科學硏究所 1998 基礎科學硏究所論文集 Vol.10 No.-
The oxidation of alkenes by [Fe₂TPA₂O(H₂O)₂](ClO₄)₄(1, TPA = tris(2-pyridylmethyl)amine) with H₂O₂ affords epoxides and diols as the starting olefins. The diol products have a trans-configuration indicating a trans opening of the corresponding epoxide by a hydroxide ion on iron. We propose a mechanism in which a hydroperoxoiron(Ⅲ) species transfers its oxygen atom directly to olefin in a concerted manner.
저온잠열저장을 위한 포접화합물의 과냉각 특성에 대한 연구
김진흥,정낙규,김창오 朝鮮大學校 機械技術硏究所 2007 機械技術硏究 Vol.10 No.1
Materials that can store low temperature solidification latent heat are organic/inorganic chemicals, eutectic salt system and clathrate compound. Clathrate compounds the material that host in hydrogen bond forms cage and guest is included into it and combined. Crystallization of hydrate is generated at higher temperature than that of ice from pure water. And physical properties according to temperature are stable and congruent melting phenomenon is occurred without phase separation and it has relatively high latent heat. But clathrate compound still has supercooling problem occurred in the course of phase change and supercooling should be minimized because it affects efficiency of equipment very much. Therefore, various studies on additives to restrain this or latent heat storage methods are needed. In this study, it was investigated the cooling characteristics of the TMA-water clathrate compound including TMA(Tri-methyl-amine, (CH3)3N) of 20∼25 wt% as a low temperature latent heat storage material. And ethanol (CH₃CH₂OH) was added and its cooling characteristics were studied experimentally to restrain supercooling of TMA-water clathrate compound.
첨가제를 첨가한 빙축열시스템 PCM용 TMA-포접화합물의 과냉도 개선에 대한 연구
김진흥,정낙규,김창오,강승현,김광일 朝鮮大學校 機械技術硏究所 2003 機械技術硏究 Vol.6 No.1
TMA clathrate that is used as PCM of low temperature thermal storage system in this research creates hydrate crystallization at higher temperature than pure water, and its application is expected a s PCM because of comparatively big latent heat without phase separation phenomenon Acetone is used as additive and evaluated experimentally for the purpose of the improvement in subcooling of TMA clathrate. In view of the results so far achieved subcooling is improved, the running time of the refrigerator is reduced. Thus the results re expected to use for the increase of coefficient of performance of ].ow temperature thermal storage system in the building.