마이크로스트�� 안테나 設計에 관한 硏究

李榮魯 서울産業大學校 1984 논문집 Vol.20 No.1

마이크로 스트맆 안테난는 접지면과 유전체층으로 불리된 평면구조의 방사 素子와 급전 回路 구성이되며, 성능이 우수하고 가벼우며 크기가 작아 設置하기가 쉽고 값이 싼반면 매우 좁은 주파수 대역에 제안되어 있다. 이 안테나는 접지면을 통해 뒤로 급전할 수 있으며 옆으로 급전할 수도 있다. 여기에서 원형 마이크로스트맆 안테나를 設計 제작하려 하며 이에따라 마이크로스트맆 선로의 特性, 원형, 공진기의 용량과 공진주파수들을 알아보았고, J, Q Howell의 경험에 따른 제작을 시도하였다. 즉, 원형방사기와 원점으로부터 반경의 약 ⅓지점에 급전점을 정해 접지면을 통해 뒤로 급전함으로 임피턴스 접합을 시도하였다. 그리하여 제작된 안테나의 정재파비, 공전주파수, 방자형태 등을 측정하였다. In this paper "Microstrip Antenna in earth vicissitude divided a class plane structure emission an element a studden change circuite structure, also efficiency and excellent light, size is a big to establishment easy but frequency band is limited.

디지탈시스템에 있어서 交叉雜音의 計算에 관한 硏究

李榮魯 서울産業大學校 1980 논문집 Vol.13 No.1

This paper deals with a mathematical method of finding Cross-Coupled Noise-Voltage in Digital Equipment A formula is derived which permits, either strictly mathematical or with some approximations, Calculation of Noise, thus providing a means for a mathematical approach to interconnection design.

LAN 구성 및 응용에 관한 硏究

최승우,이영노 서울産業大學校 1997 논문집 Vol.46 No.1

According to the arriving computer and communication days, it is necessary to prepare the basis of composition for LAN application system which good interconnection ability for hold a Data Base in common. But there is not standard network or form. Therefore, this will be a good guide which gathering a basis article and reference Data for a case of composition in internal LAN Application system. Specially, electric power corporation has a nation wide branch offices and high level communication network all over the country. This paper shows each branch standard form, interface device, protocol, internetworking device, networking management systems etc..., which concentrated with LAN application system. Composition of electronic power corporation, and make the high speed, high degree of efficiency application system.

가교폴리에틸렌의 교류트리 특성에 관한연구

賈出鉉,李榮魯 서울産業大學校 1995 논문집 Vol.41 No.1

In this paper, as the tree was generalied by changing applied voltage and time, noize or dim photograph of obtained with optical microscope. And then, fractal dimension of each photograph was calculated according to the applied voltage with are as following. When 9[kV], 12[kV], 15[kV], 18[kV] was applied the obtained fractal dimension was 1.3∼1.5, 1.5∼1.7, 1.6∼1.8, 1.7∼1.9 respectively.

韓國의 歸化植物(1)

李永魯,오용자 梨花女子大學校 韓國生活科學硏究院 1974 韓國生活科學硏究院 論叢 Vol.12 No.-

The Korean native plants were studied by several foreign and home botanists since the end of the 19th century. Therefore about 4,000 species of Korean native vascular plants are now classified. Recently many of the unfamilier plants are often in the fields of Korea. These were introduced for the purpose producing of greenery and foliage grasses from the certain foreign country, or accidentally brought in with other seeds. Some good and bad herbs and trees of foreign origin grow wildly in various places in Korea. The purpose of this study is to report what the naturalized plants in Korea. This report includes 5 species of Compositae which are as follows: 1. Ambrosia artemisiifolia L. var. elation Descoutils 2. Ambrosia trifida Linn. 3. Bidens frondosa Linn. 4. Cosmos bipinnata Car. 5. Erechitites hieracifolia Raf.

韓國産 민들레 속의 分類學的 硏究

李永魯,오용자 梨花女子大學校 韓國生活科學硏究院 1970 韓國生活科學硏究院 論叢 Vol.4 No.-

Since early in the twentieth century several plant taxonomists have syudied Korean flora including the genus Taraxacum and described many species of the taxa. Nakai reported eleven species of Korean dandelions based on the characteristics of gross morphology on Synoptical Sketch of Korean Flora in 1952. Ohwi reported twentg two species of Japanese Taraxacum in Flora of Japan in 1965. Dandelions present very similar gross morphology among them, therefore, the taxa can not be identified easily according to the phenotypes. Seems to be many nusolved problems of the Korea dandelion classificaftion. It is proposed to study the dandelions in south Korea for cytotaxonomic and anatomical viewpoints. Chromosomes of the dandelions were counted at the root tips by smear method applying aceto-orecein. The chromosomes are as follow: Taraxaum platycarpum H.Dahlataedt 2n=24, T. coreanum Nakai 2n=32, T. officinale Weber(introduced) 2n= 24, Thallasanensis Nakai 2n=16, native south Korean dandelions show polyploidal chromosome numbers as 16,24, and 32. Japanese taxa of Taraxacum platycarpum shown 16 chromosomes in somatic cell, while the same taxon in Korea was counted as 24 chromosomes. Epidermal patterns of leaf blades were examined and the largest stomata and fundamental cells of epidermis were found on T. coreanum Nakai. The fundamental cells of epidermis of T. hallasanensis is shallowly waved, but the fundamental cell walls of leaf epidermis of T. officinale are deeply waved and the stomata are larger than the former taxon (Table 1, Plate2, fig. 2). Pappus hairs of the dandelions show definitely different lengths among the taxa and also leaf shapes (Table fig 1,2,3,) The characteristics of cytology and epidermal patterns are correlated with the pappus and leaf shapes. All these characteristics can be very useful for identification and finding the systematic line of the Korean dandelions.

放射線 監視器의 設計에 關한 硏究

李榮魯 서울産業大學校 1987 논문집 Vol.25 No.1

In this paper, signal processing circuit was fabricated to utilize scintillation counter tube as the radiation detector, and the signals from detector are counted by Z-8Θmicroprocessor system whose counted is converted to does rate and displayed. When radiation in excess of alarm level is detected, radiation monitoring system to activate alarm was fabricated. Random pulses which are generated from radiation detector are processed, and then positive pulses more than 1V are measure at output of amplifier. Only pulses of amplifier over setting level are passed to single channel analyzer, and then the pulse height is 3.6V. Pulses from signal processing circuit are counted by means of Z-8Θ microprocessor system, and converted to does rate by software which them performs mathematical calculation and alarm determination. When detector is irradiated by standard radiation source(Cs-137, 3Ci) error of processed values is within 5%.

韓國産 제비꽃屬植物의 葉表皮와 종자의 形態學的 硏究

李永魯,李愚喆 梨花女子大學校 韓國生活科學硏究院 1968 韓國生活科學硏究院 論叢 Vol.1 No.-

We have studied epidermis and seeds on twelve species of violets and have found the following diffeences in characteristics; Epidermis are variable among the taxa. stomata are present at both surfaces of leaf blades on the taxa viola grypaceras, V.lactiflora, V.mandshurica, V. raddeana, V. seoulensis, V. takesimana, V. variegata and V. verecunda, while stomata are absent at adaxial surfaces of leaf blades on V. seoulensis and lactiflora are larger than the other taxa. Both taxa are shown as 48 chromosomes in somatic cells intead of the 24 or less chromosomes of the other taxa (1967). In general, call walls of abaxial surface are more waved than the adaxial. Seed size is variable even in the same taxa. The plants, Viola rossii and. V. aldida produce considerablly large seeds (Table 2.) Small seeds are shown by the taxa of V. grypoceras. Color differences of seeds are also shown by the taxa, as dark brown, dark gray and yellew brown The characteristics of epidermis and seed size and color are considered as very useful characteristics for the Viola identificiation and classification.

Comparative Study of Astragalus membranaceus Bunge and Astragalus Hallasanensis

李永魯 이화여자대학교 한국문화연구원 1959 韓國文化硏究院 論叢 Vol.1 No.-

Comparative study of Astragalus membranaceus Bunge and Astragalus Hallasanensis Yong-No Lee / Yong No Lee, Jeung Ae Do We have attempted to discriminate the basic textural differences between Astragalus membranaceus and Astragalus membranaceus var. alpinus through this study. We could get the results as followings. Ⅰ. Stomata: The stomata of Astragalus membranaceus var. alpinus are found on both surfaces of the leaf. But these of Astragalus membranaceus are found on lower surface only. We also can perceive the difference in number of stomata among them, and perceive that the cell wall of the epidermis of Astragalus membranaceus waved than Astragalus membranaceus var. alpinus. Ⅱ. Leaf structure: The cells of palisade tissues of leaf of Astragalus membranaceus are laid regularly, closely and veins are jutted out on the lower surfaces, but in the Astragalus membranaceus var. alpinus, the cells of palisade tissues of leaf are laid rather irregularly, loosely and the veins are jutted out not so much. In other word, the intercellular spaces are further developed in Astragalus membranaceus var. alpinus. (especially in the upper and lower surfaces of leaf) Ⅲ. Stem structure: The tissues of cortex of stem, pith and fiber are perfectly developed in Astragalus membranaceus var. alpinus, compare with Astragalus membranaceus. Ⅳ. Root structure: The cortex cells are 4 or 5 layers in root of Astragalus membranaceus var. alpinus and its tissues are much developed and pith is distinguishable easily. But in the Astragalus membranaceus, the cortex cells are 8 or 9 layers, fiber tissues are loose and pith is not so distinguishable. Ⅴ. Pollen: The length is 18μ, width is 17μ and the shape of Pollen are is round in Astragalus membranaceus var. alpinus, but the pollen of A. membranaceus is rather larger and elliptical broadly than A. membranaceus var. alpinus. We can say these points are remarkable differences. On the points of view described above, the remarkable differences in its shape and texture be defined that the Astragalus membranaceus var. alpinus is a specific species of Astragalus rather than a variety of Astragalus membranaceus. Therefore, I would like to nominate it as scientific name "Astragalus Hallasanensis (Nakai) Yong-No Lee."

韓國産 닭의장풀屬의 分類學的 硏究

李永魯,오용자,余星姬 梨花女子大學校 韓國生活科學硏究院 1977 韓國生活科學硏究院 論叢 Vol.19 No.-

한국산 닭의장풀 무리에 대하여 외부형태, 표피, 화분과 생육장소 등을 조사 연구한 것으로서 한국에 나는 닭의장풀속은 좀닭의장풀 Commelina coreana Le´ve´ille´와 닭의장풀 Commelina communis complex의 그룹으로 나눌 수가 있다. 그리고 좀닭의장풀은 비교적 변이가 없고 安定한 상태로 있는 종이라고 보나 닭의장풀은 변이가 많다는 것을 알 수가 있다. 닭의장풀의 변이형을 꽃색으로 나누어 보면 청색이며 포와 엽초에 털이 있는 것, 청색이며 포와 엽초에 털이 없는 것, 엷은 청색, 흰색, 자색과 흰분홍색으로 대별할 수가 있다. 그리고 좀닭의장풀은 산지의 석회질 토양에 나고 닭의장풀은 산 밑 또는 길가등의 습한 곳에 흔히 나고 있다. 닭의 장풀의 변이형이 많고 같은 장소에 나있는 점을 고려할 때 이 닭의장풀 무리는 근대에 와서 또한 현재 종분화가 진행되고 있는 것이 아닌가 생각된다. 그밖에 본 연구 결과 밝혀진 것으로 Commelina ludens Miq.는 Commelina communis 異名이며 Commelina coreana f. leucantha는 Commelina communis f. leucantha라고 보는 바이다. 따라서 Commelina communis f. leucantha Makino는 새로운 記錄種이 된다고 본다. Nakai (1952) reported 3 species, and one variety and one forma, Commelina coreana,Commelina communis var. latifolia and Commelina coreana f. leucantha, in his the last publication "A Synoptical Sketch of Korean Flora". This study is to find characteristics of the taxa and relationship among the Korean taxa of Commelina, using detail of gross morphology, pollens, stomata, hairs, flower colors and habitats in Korea. The result of the study was that we recognized two groups of Commelina species, Commelina coreana and Commelina communis. The taxon of Commelina coreana usually grows in lime soil of the mountains and the taxon has stable characteristics of elongated leaves with hairs on the margin of leaf sheath, and blue flowers. The characteristics of Commelina communis species are very variable. The hairs on bract, colors of flowers and the size of stomata are much diferent among the taxa of Commelina communis complex. The colors of the taxa are white, blue, pale blue, purple and pale pink. The blue flowered taxa are classified by the hairs on bracts and leaf sheaths. The variable taxa of Commelina communis complex grow at sympatric areas in rather low land. Probably the speciation of taxa, Commelina communis complex occured very recently. We found a white flowered taxon, Commelina communis f. leucantha. It is considered that the taxon Commelina coreana f. leucantha was misnominated by Nakai Takenoshin. We also recognized a taxon of Commelina ludens Miquel as a synonym of Commelina communis. Commelina minor has the characteristics of small pale purple folwers, and large pollens and epidermal cells.