적응 퍼지 추론 기법을 이용한 도립 진자 시스템의 안정화 제어에 관한 연구

이준탁,김태우,최우진 한국지능시스템학회 1995 한국지능시스템학회 학술발표 논문집 Vol.- No.-

藥用植物의 遺傳資源蒐集과 利用에 對한 調査

李準琸 慶北大學校農業科學技術硏究所 1990 慶北大農學誌 Vol.8 No.-

1987年부터 1989年까지 慶北地域을 中心으로 慶南과 忠北의 一部地域에서 調査한 藥用資源植物은 118科 331屬 456種이었고, 이들중 Compositae, Liliaceae, Leguminosae, Labiatae, Rosaecae, Polygonaceae, Umbelliferae, Gramineae, Solanaceae, Cucurbitaceae, Ranunculaceae, Cruciferae, Rutaceae, Araliaceae, Araceae, Moraceae, Scrophulariaceae, Caryopyhllaceae, and Convolvulaceae 등 19科에 속하는 식물이 249種으로 調査된 植物의 半數以上을 차지하고 있었고 나머지 207種은 99科의 植物로 分類되었다. 調査植物의 거의 大部分이 多年生이었으며, 開化期는 대부분 6-8月이었다. 栽培圃場과 展示圃場, 庭園, 公園 等地에 栽植되어있는 78科 213種의 植物중에서 藥用資源植物의 主用途는 觀賞用이 93種, 藥用 50種, 菜蔬類 27種, 食品用 14種, 果菜類 5種, 果樹類 13種, 油料用 5種, 茶用 6種, 綠音樹 및 街路樹用이 9種, 纖維用 등 기타의 用途가 14種이었다. 調査植物의 藥用部位는 地下部가 가장 많았고 그 다음은 莖葉, 全草, 花器, 種子 및 果實의 順이었다. 藥用效能은 利尿, 胃腸病, 强壯, 鎭痛, 解熱, 鎭咳 止血, 消炎作用의 植物이 대부분이었으며, 抗癌效果의 植物도 9種 調査되었고, 漢藥劑로 많이 利用되고 있는 植物은 87科 191種이었다. In order to collect the plant genetic resources in Korea, the medicinal plants were surveyed from 1987 to 1989 in Kyungbuk province and at the several areas in Kyungnam and Choongbuk, province. The medicinal plants of 456 species in 118 families were investigated in these regions. Among them, 249 species were belonged to 19 families, Compositae, Liliaceae, Leguminosae, Polygonaceae, Labiatae, Rosaceae, Umbelliferae, Gramineae, Solanaceae, Cucurbitaceae, Ranunculaceae, Cruciferae, Rutaceae, Araliaceae, Araceae, Moraceae, Scrophulariaceae, Caryopyhllaceae, and Convolvulaceae, and others were belonged to 99 families. They have been used mostly for urination, gastroenteric disoder, robustness, antiphlogistic, anodyne, cough medicine, fever remedy, hemostatic, and 9 species of them have been used for anticancer medicine. The medicinal plant resources which were planted in the fields, gardens, parks, roadsides, and glass house, were 93 species for ornamental, 50 for medicine, 27 for vegetable, 14 for food, 5 for vegetable fruit, 13 for fruit, 5 for oil, 6 for tea, 9 for shade, and 14 for other purposes. Most of investigated plants were perennial, and flowered from June to August. The root parts were most frequently used as medicine, and other parts were used in the order of leaf and stem, whole plants, flower, seed, and fruit. Among the 456 species, 191 species in 87 families were investigated to be important medicinal plants.

NETLA Based optimal synthesis method of binary neural network for pattern recognition

이준탁 한국지능시스템학회 2004 한국지능시스템학회논문지 Vol.14 No.2

This paper describes an optimal synthesis method of binary neural network for pattern recognition. Our objective is to minimize the number of connections and the number of neurons in hidden layer by using a Newly Expanded and Truncated Learning Algorithm (NETLA) for the multilayered neural networks. The synthesis method in NETLA uses the Expanded Sum of Product (ESP) of the boolean expressions and is based on the multilayer perceptron. It has an ability to optimize a given binary neural network in the binary space without any iterative learning as the conventional Error Back Propagation (EBP) algorithm. Furthermore, NETLA can reduce the number of the required neurons in hidden layer and the number of connections. Therefore, this learning algorithm can speed up training for the pattern recognition problems. The superiority of NETLA to other learning algorithms is demonstrated by an practical application to the approximation problem of a circular region.

Back-Propagation 신경 회로망을 이용한 비선형 시스템의 자기 학습 제어

이준탁,송호신,박철영,박영식 동아대학교 공과대학 부설 한국자원개발연구소 1993 硏究報告 Vol.17 No.1

A new algorithm is designed with the purpose of identifing the structure and the parameters of the nonlinear discrete-time plant with only the unknown dynamics and the weak informations about its structure. The proposed algorithm is to compensate the weighting values using its previous derivatives and to decrease exponentially a series of self-learning coefficients. Through simulations, it is shown that the newly proposed algorithm is more effective and is superior to the conventional ones.

慶北地方種 참깨의 生態型에 關하여

李準琸,李昌垠 慶北大學校 産業開發硏究所 1976 硏究報告 Vol.4 No.-

This study was carried out to select the variety showing high yield, stem rot tolerance and high oil content among the local varieties of sesame in Kyungpook district. An-dong local variety showed the highest yield in the varieties tested and followed by Tae-gu variety. In branching type, An-dong, Gim-cheun, Woul-seung and Tae-gu varities were non-branching type, and Yae-cheun, Cheung-do and Seun-san varieties were branching type. An-dong, Gim-cheun, Woul-seung and Tae-gu varieties had 3 capsules in axil, and Yae-cheun, Dal-seung, Cheung-do, and Seun-san varieties had one capsule. In the type of capsule, An-dong, Yae-cheun, Cheung-do, Gim-cheun and Tae-gu varieties were 4 cells, and Seun-san variety was 8 cells but Dal-seung and Woul-seung varieties were mixed with 4 and 8 cells. Woul-seung variety was yellow brown and the others were white in seed color. In the degree of tolerance against stem rot, An-dong and Tae-gu varieties were resistant, Cheung-do, Woul-seung and Yae-cheun varieties were moderate, and Dal-seung and Gim-cheun varieties were susceptible.

藥用植物眞菌病에 關하여(Ⅰ)

李準琸,金文鎬,朴京順 慶北大學校 1983 論文集 Vol.36 No.-

The 27 species of the medicinal plants belong to 20 families which seemed to be infected by fungal pathogenes were collected at 8 localities in Korea during 1981 and 1982, and the diseases were diagnosed on the basis of their symptoms and the characteristics of the pathogenes. The results were summarized as follows; The anthracnose on 10 species, powdery mildew on 6 species, rust on 3 species, white rust by Albugo sp. on 2 species, respectively, and leaf spot by Septoria sp. and Phyllosticta sp., smut by Ustilago sp., grey mold by Cercospora sp., pale spot by Ramularia sp., ring spot by Pestalotia sp., and pod blight cladosporium sp. were found on each one species of the plants. Among them 11 diseases were turned out to be new diseases which has not hitherto been described on those hosts in Korea.

非線形 시스템의 퍼지 모델링과 퍼지 시스템의 安定度 解析에 관한 연구

李浚柝 東亞大學校 附設 情報通信硏究所 1994 情報通信硏究所論文誌 Vol.2 No.1

본 논문은 비선형 시스템을 선형 퍼지 모델로 표현하는 기법과 Lyapunov 부등식과 고유치 검증을 통하여, 퍼지 제어 시스템의 안정도를 해석하는 기법을 제안하고 있다. 먼저, 비선형 시스템은 언어적 퍼지 변수와 퍼지 규칙에 기초한 다수 개의 선형 서브 시스템으로 분할한다. 그리고, 최적 피드백 제어칙에 의해 각 서브 시스템의 점근 안정을 보장하는 외란 적응 제어기를 설계하여, 전체 퍼지 시스템의 대역적 점근 안정도 보장되게 한다.

비선형 폐 가스 결합특성의 전기적 모델화

이준탁,정형환 한국의학물리학회 1991 의학물리 Vol.2 No.2

본 논문은 인공폐의 설계및 임상진단을 위한 허파기능의 연구 및 호흡생리의 요체인 폐모세 혈관내 혈액의 Hb와 가스상 산소의 비선형 결합특성을 규명할 수 있는 새로운 산소포화 모델을 전기적 등가회로에 기초하여 유도하였다. 새로이 유도된 산소포화 모텔은 종래의 모델에 비해 훨씬 간단하고, 광범위한 pH 및 각 생리 parameter 등의 변동에도 정확히 적용될 수 있었을 뿐 아니라, 결합반응과 등가인 2단 및 4단 RC 전기적 등가회로의 Simulation 결과로 부터, Hb 와 산소의 비선형 결합특성은 2단계의 복합 반응으로 취급하는 것이 타당함을 확인하였다. A newly derived O$_2$ Saturation Model which can be adapted to the design and study of Artificial Lung and Blood Gas Calculator etc. is introduced on the basis of Electrical Equivalent Circuits. The presented 4 stage and 2 stage RC circuits have good correlatons with actual chemical reactions of Hemoglobin and Oxygen. However, from results of computer simulations, 2 stage equivalent model is more accurate than 4 stage and conventional O$_2$ saturation models.

Fuzzy 제어기를 이용한 외란부가 Servo System 제어

정형환,김태우,이오걸,이준탁 東亞大學校 1991 東亞論叢 Vol.28 No.1

A servo system requires faster and more accurate dynamic responses. Generally a PD control is mai-nly used to obtain the precision, and in the other hand a fuzzy control to improve the transient respo-nse and to cope with the nonlinearity of systems. Recently hybrid control, which is attempted to combine the advantages of PD control and a Fuzzy control was proposed, but this technique requires complicate design procedures. Therefore in this paper, a fuzzy controller with a series of membership functions and various sampling periods and rules, was designed on the basis of Lyapunov stability theory and auto tuning methods of imput scale factors using the proposed windowing techniques. And also it was showed to have the excellent adaptive performacnes against internal-external disturbances and the usefulness of this controller from the results of simulations.

Fuzzy Controller를 이용한 Servo System의 제어

이준탁,이승환 동아대학교 공과대학 부설 한국자원개발연구소 1991 硏究報告 Vol.15 No.1

A new control technique of designing a Fuzzy Controller, based on the vague informations and the Fuzzy Set theory, is introduced and is applied to the control of a Servo System which requires faster and more accurate dynamic responses compared with other complex industrial processes. A Fuzzy Controller designed by this algorithm is consisted of a set of linguistic rules which represented the control strategies of an experienced human expert. We prove also the adaptive performances against internal-external disturbances and the usefulness of this controller from the results of simulations.