통합 망관리 시스템 지원을 위한 Managed Object Definition에 관한 연구

김종만,김태수,이광휘 창원대학교 정보통신연구소 2001 精報通信論文集 Vol.5 No.-

This paper presents a system for internetworking between different network management protocols. The internetworking system between SNMP and CMIP has been designed. SNMP has been used as a standard protocol in Internet while CMIP in OSI network. It is not easy to interoperate SNMP and CMIP because these protocols have several different aspects. So, definition method of integrated managed object to support several different domain managers in the grammar level has been proposed in this paper. In this paper, we propose technique to make new template, "macro" template. This template can include SNMP notation with minimum reformation. The package template is also extended and added for additional rules for SNMP domains. Through this approach, benefits of serving different services can be provided to several domain managers by modifying interfaces.

내독소로 유도되는 Nuclear Factor Kappa B 활성화에 미치는 Src Family Kinase의 조절기전

김희재,이혜원,이희수,하종식,이지희 이화여자대학교 의과대학 2003 EMJ (Ewha medical journal) Vol.26 No.2

목적: Src family tyrosine kinases (TK)가 내독소로 인해 유도되는 NF-kB 활성화 신호전달체계에 연관되어 있음이 보고된 바 있다. 또한 내독소(LPS)나 TNF a와 같은 여러 자극제는 IkB-a 의 serine기 또는 tyrosine기의 인산화를 통하여 NF-kB를 활성화 시킨다고 알려진 바 있다. 이에 본 연구에서는 RAW 264.7 대식세포에 내독소 투여 시 유도되는 NF-kB활성화 및 NF-kB 의존성 염증성인자 생성에 대한 Src TK의 역할에 대해 규명하고자 한다. 방법: American Type Culture Collection 에서 구입한 생쥐의 대식세포, RAW264.를 내독소(LPS)에 노출시킨 후 damnacanthal나 PP1을 처리하여, EMSA, Nitrite assay, Western blot을 통하여Src TK가 NF-kB활성과 염증인자의 생성에 있어서 어떤 역할을 하는지에 대하여 조사하였고 내독소 투여로 인한 NF-kB활성에 있어서 Src TK의 기본적인 작용기전에 대해 조사하였다. 결과: Damnacanthal이나 PP1은 Src TK 특이적 억제제로 알려져 있는데, 본 연구에서는 Src TK의 특이적 억제제인 damnacanthal 이나 PP1을 사용하였고, RAW 264.7 대식세포에서 Src TK 특이 억제제의 전처치는 내독소로 유도되는 NF-kB활성을 차단시켰다. 또한 내독소 투여로 증가된 NO 생성은 damnacanthal이나 PP1에 의하여 억제되었다. 이런 TK kinase 억제제는 내독소로 유도되는 serine 기 인산화와 IkB-a 분해를 억제시켰다. 결론: Src kinase 특이적 억제제인 damnacanthal 그리고 PP1이 RAW 264.7세포에서 내독소로 유도되는 NF-kB활성과 Nitric Oxide 생성을 차단시켰다. 또한. Damna-canthal이나 PP1은 내독소로 유도된 serine기 인산화와 IkB-a의 분해를 억제시켰다. Objectives : Src family tyrosine kinases(TK) have been found to be involved in LPS induc-tion of signal cascades. Furthermore Lipopolysaccharide(LPS) or Tumor necrosis factor alpha (TNF-a) activate nuclear transcription factor kB(NF-kB) by inducing serine or tyrosine pho-sphorylation of the inhibitory subunit of NF-k B(I k B- a). In this study, it is our purpose to search the role of Src TK in LPS induced activation of NF-k B and NF-k B dependent induced inflam-matory factors. Methods : Nuclear extracts were prepared from RAW 264.7 cells pretreated with damnacan-thal or PP1 and then stimulate with LPS. After that, we figured out the dffects of inhibition of Src family kinases on LPS-induced activation of NF-kB by EMSA. We investigated effects of damnacanthal of PP1 on the production of NO by Griess assay and LPS-induced serine phos-phorylation and degradation of Ik B-a by Western blots in LPS-stimulated RAW263.7 cells. Results : Inhibition of Src TK with damnacanthal or PP1 blocked LPS-induced NF-kB acti-vation at the range of nanomolar concentrations. Substantial inhibition in LPS-induced production of NO was also observed in cells treated with damnacanthal or PP1. These kinase inhibitors blocked LPS-induced the serine phosphorylation, and the degradation of Ik B-a. Conclusion : we investigated the role of Src TK in NF-k B activation and production of nitric oxide (NO) in LPS stimulated RAW 264.7 macrophages and the underlying mechanism by which Src TK play a role in LPS-induction of the possible pathways leading to NF-k B activation. Src kinase specific inhibitors, damnacanthal and PP1 blocked LPS induced activating NF-k B and producing Nitric Oxide in Raw 264.7 machrophages. Moreover, Damnacanthal and PP1 inhibited LPS induced serine phosphorylation and degradation of Ik B-a.

우리 나라 배경농도지역의 1996~1997년 미세입자상 탄소성분 측정 결과

김용표,이종훈,문길주,김희강,이종범 江原大學校 附設 環境硏究所 1999 環境硏究 Vol.16 No.-

The concentrations of organic carbon (OC) and elemental carbon (EC) in fine aerosols were determined from the samples collected at the two background sites of Kosan in Cheju Island and Kangwha. Samplings were carried out during the spring and winter of 1996 and the fall and winter of 1997. PM_(2.5) particles were collected on the pre-fired quartz filters for 24 hours and analyzed by the selective thermal oxidation method. The concentrations of OC at the sites were higher than those commonly observed from clean areas around the world, but those of EC at both sites were lower than, or comparable to, other clean areas in the world. Both the OC and EC levels at Kangwha were higher than those at Kosan. According to backward trajectory analysis, most air pollutants collected at thetwo sites were from China. It was found that the OC and EC concentrations in air masses from southern China were higher than those from northern China.

창의성 향상을 위한 프로그래밍 교육 방안

김종훈,정원희 제주교육대학교 초등교육연구소 2005 초등교육연구 Vol.10 No.-

Modeling of a Virtual Three-dimensional Plain Weave Fabric - A Closely Packed Multifilament Yam Model -

( Kim,Jong-Jun ),( Jeon,Dong-Won ),( Yun,Myung-Hui ) 한국패션비즈니스학회 2003 패션 비즈니스 Vol.7 No.6

人蔘圃土壤微生物의 生態學的 硏究

金倧熙 東國大學校 1965 論文集 Vol.2 No.-

A study has been made on the soil quality of the major ginseng fields in Kang-hwa-gun, Kyonggi-do, in the distributional pattern and kinds of microorganisms in various levels of soil depth, and on the correlation of the number of microorganisms between the soil in which the Fusarium disease occurs and the one free of such disease. The following conclutions have been drawn: 1. In the total occurrences of microorganisms, bacteria was the greatest in number followed by Actinomycetes and Fungi, in that order. 2. a survey of the soil depth and the ecological distributional pattern of microorganisms revealed that the number of microorganisms is the greatest on the surface, gradually decreasing in proportion to the depth. 3. The greater the acidity of the soil, the less bacteria but the more Fungi were found with the overall number of microorganisms decreasing. As the soil approached neutrality, the bacteria tended to show an increase whereas the Fungi indicated a proportionate decrease with the overall number of microorganisms recording an increase. 4. It was found that a comparatively greater number of microorganisms occurred when the soil showed an adequate increase in water capacity. 5. The Fusarium disease, one of the root rot diseases of ginseng, occurs most frequently when the soil contains small number of microorganisms

Fe-17%Cr 페라이트계 나노사이즈-산화물 분산강화합금의 인장성질과 고온산화에 미치는 산화물종의 영향

김익수,강창룡,이종문,이병우,정상훈,이원희 대한금속재료학회 2003 대한금속·재료학회지 Vol.41 No.12

In order to develop mechanically alloyed nano-sized ferritic ODS alloys, we have investigated the effect of three kinds of oxide such as Y₂O₃, Al₂O₃ and TiO₂, on the high temperature tensile properties, high temperature oxidation behavior and corrosion resistance. Due to the most distribution of fine and spherical particles, ODS alloys containing Y₂O₃ raise yield strength and tensile strength at high temperatures considerably. The results of high temperature oxidation tests indicate that the ODS alloys containing Y₂O₃, Al₂O₃ and TiO₂ are resistant to oxidation between 823K and 1023K. The ODS alloy containing Y2O3 by attributed by to thermal safety of Y₂O₃ showed an ecellent characteristics in oxidation and corrosion.

식품 기준·규격의 합리적 관리 ·운영에 관한 연구(Ⅰ) : 두부,식용유지, 전분의 분말상 원료에 관하여 Powdered marerials of Tofu, Edible oil, Starch

김희연,홍진환,박혜경,한상배,박종석,이은주,이정성,송경희,최은희,최영준,소경아,성영제,이주엽 식품의약품안전청 2000 식품의약품안전청 연보 Vol.4 No.-

본 연구는 분말상 원료(전분, 대두분)의 저장유통시 품질변화를 건전성과 안전성 측면에서 검토하여 식품의 기준 ·규격 설정f.」 합지적으로 반영하고자 하였다. 전분과 패두분의 이물을 검사하고, 2종 대두분(중국산, 미국산)을 ?0일간 IS'c와 30t에 저장하면서 성상, 수분, 산가, 과산화물가, 지방산 조성,아플라톡신 BB의 생성여부를 분석하였다. 중국산 대두분 30'』 저장군에서 50일 이후 곰팡이가 발생한 것 이외에 모든 시료에서 양호한 성상을 나타내었고, 전분과 대두닥 모든 시료에서 이물은 검출되지 않았다. 산가는 중국산과 미국산 시료간에 편차를 보여 증국산 30"C, 50일 저장시료에서 약 10배끙도 증가하였고, 과산화물가는 저장 90일후 15'E 저장군은 약 2.3배, 30'c 저장군은 3배정도 증가하였다. 대두분의 주요 지방산은 linoleic acidf18. 2), oleic acid(18 : 1), palmitic acid(16 : 0)이었으며, 3개월 저장에 따른 지방산 함량의 변화는 미미하였다. 아플라톡신 B₁은 모든 시료에서 검출되지 않았다. The objective of this study was to investigate auality changes of type raw materials(starch, soy flour) during various storage conditions. Starchflour(source of China, U.S.A) were slfred under two temperature(15'C, 30'c) forSensory evaluation, (o.reign material test, moisture content, acid value, peroxide ualue,composition, aflatorin Bi were analyzed. China soy flour(stor·ed 30'f) was contaminated by fungj on 50 days. Except for soy flour contardnated by fungi, sensory characteristics were not changed and foreign mater;als were notdetected. Acid value of China soy flour(stored at 30'C, 90 days) was about 10 times higherlevel before storage and acid value was more influenced by source(China, USA). Peroxide valuewas in proportion with the storage period slightly. The major fatty acid of soy flour waslinoleic acid(18 . 2), an(3 the change of fatty acid composition was not observed. Aflatoxlrl Blwas not detected.

순환형 디지탈 필터의 설계와 구성

박상희,김종현 연세대학교 산업기술연구소 1982 논문집 Vol.14 No.1

The digital filter is the time invariant discrete system and has the advantages in accuracy, stability, flexibility and noise immunity. In this paper, digital low-pass filter, high-pass filter and digital differentiator are designed and its hardwares are implemented by using Intel 8085 microprocessor and digital LSI components. The digital butterworth low-pass filter and high-pass filter are designed by means of squared magnitude function and frequency transformation. The digital differentiator is designed by matched z-transformation.

우리나라 사이버 무역 현황과 발전방안에 관한 考察

박희종,김민수 明知大學校 經濟硏究所 2002 경영연구 Vol.21 No.1

본 연구에서는 전자상거래, 전자무역, 인터넷 무역 등 새로운 무역방식을 언급하는 여러 용어의 의미와 기존 무역거래와의 차이점을 살펴보면서 사이버 무역의 이점을 본다. 사이버 무역의 진행과정상의 변화는 기존의 무역방법과 크게 다르지 않지만 방법과 수단에서는 매우 큰 차이점이 있다. 국내 사이버 무역을 수행하기 위한 IT산업의 기본적인 인프라의 수준은 괜찮은 것으로 조사가 되었지만 아직까지 종합 무역으로 발전하는 데는 적지 않은 문제점들이 있다. 우리나라의 경우 사이버 무역이 활성화되기 위해서는 크게 3가지의 문제점을 보완해야 할 것으로 본다. 즉 법적·제도적 미비점과 전문인력의 부족 등의 인프라 측면, 인증·보완·지불 등 기술적인 측면, 관세를 포함하는 과세적 측면이 그것이다. 이 문제점들을 해결하는 것이 우리나라 사이버 무역을 할성화시키는데 중요하며 각 항목별로 그 해결방안을 제시해 본다.