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RISS 인기검색어
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- 저자 : 李?模 (검색결과 146 건)
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李俊模 관동대학교 1981 關大論文集 Vol.9 No.1
一般的으로 위상반전이 무시될 수 없는 高周波用의 반도체 Inductance는 回路素子, 電流, 周波數를 考慮한 機能的인 設計가 要求된다. 따라서 이것을 2 port와 같은 回路網으로 應用항 때 이것들에 摘用되는 回路機能을 考慮할 必要가 있다. 본 논문은 高周波 等價 Gyrator를 용이하게 結合하여 상호 유도회로를 等價的으로 包含한 機能 帶域 Filter를 構成한 것이다. 設計에 關해서는 等價 Gyrator가 成立되는 理想的인 상태로 부터 종래의 Coil의 선택도에 對應된 方法을 取하였고, 實驗 및 解析에 依하여 그 자체를 確立시켰다. 實驗 結果 종래의 Coil을 利用한 帶域 Filter에 나타나는 것과 같은 雙峯 特性曲線이 얻어졌고 Coil Inductance를 간단히 1 port와 같은 반도체 Inductance로서 나타난 帶域 Filter와 比較하여 增幅度를 나타냈다.
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위상기하학에 의한 Switched-Capacitor회로의 해석
李俊模 관동대학교 1985 關大論文集 Vol.13 No.3
Two phase Switched-Capacitor networks containing the Norator and Nullator as the active elements can be considered the network to control by means of the total 4 graphs because they are composed of two network-constructions which differ from period and define the graph of current and voltage each other. This paper describes topological formulations of the network functions in Z-domain for this Switched-Capactior networks, and defines Switched-Capacitor common tree in the graph of current and voltage. Denominator polynomial for the response of function is presented by the sum of common tree-branch product to the all Switched-Capacitor common tree. And, describes graphical analysis to the complexity and soulution of network by formulations. As the result, it can be described topologically that the condition for solution of the networks and some kind of eigen complexity of networks.
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李俊模 관동대학교 1987 關大論文集 Vol.15 No.2
In this paper, state equation approximation method of multivariable system is studied and minimum order estimation is used in approximation. In this method, state equation of the system is approximated and rational function of the state equation is stablized, therefore controllable, observable system equation is obtained. If the rational function is unstable in approximation procedure, pole of the retional function must be moved, the system to be stable. In this case, to determine coefficients of numerator polynomial squared error method is used.
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새삼(Cwscuta sojagena Makino 蒐絲子)의 새로운 寄主植物에 關하여
李容模 안성산업대학교 1976 論文集 Vol.8 No.-
In the Devil's guts(Cuscuta sojagena Makino), It soemed that till now Leguminosae(pulses) had fiscation parasitical plant fut they has seeme announcement Mug wort was china aster as not appear with the nourishment was to death of capture.
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실새삼(토사자 Cuscuta sojagena Makino)의 새로운 寄主植物에 關하여(Ⅵ)
李容模 안성산업대학교 1981 論文集 Vol.13 No.-
This observation was carried out to find kind of the new host plants on parastism the Dodder (Cuscuta Sojagena Makino) The results are following. 1. The Dodder(Devils guts) was Known not only as a parasiting on the Leguminose plants (Pulses) at recenty, but a parasiting on the chinese aster (Call is tephus chinensis cassini), Mug Wort(Artemisia Vulgaris L. Var indica Max) and cutting grape Vine. 2. The Dodder was too parasiting on the red-pepper and petunnia, nello such plants die as absorbed get from nutrition at the plants. 3. When the Dodder was parasiting on the Vine, the grape vine was stop to vegetation growth and new grape vine was shooting again at the node. 4. When the Dodder was parasiting on the shoot, the Marigold and Morning glory vine and Oxalis was stop to vegetation growth and new Marigold and Morning-glory vine was shooting again the node.
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特定空港의 航空機 Engine 騷音과 그의 對策에 關한 硏究
李晶模 한국항공대학교 1976 論文集 Vol.9 No.-
最近 Jet機의 騷音은 先進名國의 至大한 關心의 하나로서 날로 增加되는 航空機의 大型化에 依한 都市公害를 減少시키는 目的으로 多角度硏究되어 特히 騷音의 根源인 Engine의 改良에 힘써오고 있다. 本 硏究에서는 이 Engin의 騷音을 分析하고 우리나라의 國際空港인 金浦空港을 特定하여 空航을 中心으로한 範圍를 ISO에 題安된 騷音評價 Contour 에 依해 分析하여서 그 미치는 影響限界를 表示하여 密集에 依한 騷音被害人口의 感少努九에의 資料를 마련하였다. Recently the noise from jet planes, one of the great concerns of every developed country, has been studied in every respect in order to decrease the noise pollution in cities caused by making aircraft large-sized aontinuously, and especially an effort to improve engines, the source of noise, has been made by developed countries. In this study, the datafor decreasing the noise pollution inflicted on a highly, dense population are prepared by presenting the limit of the reach of the noise through the analyses of the engine noise and of the reach of the noise from Kimpo International Airport, which is selected as an example, according to the contour for noise estimation suggested to ISO.
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Allpass Network를 이용한 능동 여파기에 관한 연구
李俊模 관동대학교 1982 關大論文集 Vol.10 No.2
본 논문은 두개의 Allpass Network와 가산기를 사용하여 RC 능동 여파기를 실현하는 설계를 논하였다. 기본 회로망은 두개의 Allpass Network로 이루어졌고 여기에 세개의 단자를 인출하여 적당한 저항으로 가산기에 연결하여 능동 여파기를 얻었다. 능동 여파기는 각 회로정수에 대해서 높은 Q와 낮은 감도를 가지며, Q와 주파수의 값은 저항 및 콘덴서를 조정하여 변화시킬 수 있었다.
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