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한철웅,김종수,류평,오금곤,박세승 조선대학교 전자정보통신연구소 2000 電子情報通信硏究所論文誌 Vol.3 No.1
지능제어 기법중 하나인 퍼지-유전자 알고리즘은 매개변수 불확실성을 갖는 시스템을 제어하기 위한 새로운 제어 기법으로 사용되어지고 있다. 유전자 알고리즘에서, 돌연변이율은 국부적 최소화에 수렴하는 것을 방지하기 위하여 크게 설정하여야만 하지만, 전역 수렴 속도가 감소하는 문제점을 가지고 있다. 이러한 문제점을 개선하기 위하여 퍼지 논리와 유전자 알고리즘을 사용하여 제어기를 설계한다. 본 논문에서는 구륜이동 로봇의 목적궤적을 추적할 수 있는 제어기 설계를 제안한다. 제안된 제어기의 유용성은 모의실험을 통하여 보인다. Genetic algorithms, one of intelligent control methods, is used as new control approach to control the system including the parameter uncertainties In the genetic algorithm, the mutation rate must be set to high to prevent the convergence to local minimum, but it has the problem that the global convergence speed is decreased To enhance this problem, we design the controller by using the fuzzy logic and the genetic algorithm In this paper, we propose the controller design to track to the desired trajectory of the wheeled-mobile robot The validity of the proposed controller is showed through the simulation.
한성문,왕용필,정형환,주수원 동아대학교 공과대학 부설 한국자원개발연구소 1995 硏究報告 Vol.19 No.1
This paper analyzed the static voltage collapse phenomenon and the dynamic voltage collapse phenomenon by means of fluctuations of active-reactive power and the fluctuations of active power offered an output from the load bus respectively. The results are summarized as follows 1. In static state, the voltage collapse value can be computed by applying the equilibrium equation of active- reactive power to Jacobian, the bifurcation point can be also found. 2. The voltage collapse broke out by the reactive power loss and it is found that the active power has an effect on the voltage collapse phenomenon. 3. When a disturbance is given to the active power of the infinite bus voltage side, it is showed that a voltage is collpased by change of the load angle and the current in a dynamic fuctuation of the transient internal voltage E'_(q), E'_(d).
卞種秀,李相韓,金相鎬 慶北大學校 齒科大學 1985 慶北齒大論文集 Vol.2 No.1
This is a case report of oronasal fistula closure by tube pedicle flap technique. The patient, 28-year-old famale,had an oronasal fistula on the hard palate (4×2㎝, elliptical shape) We used pancake type tube pedicle flap from left upper arm. The ratio of length & breadth of the tube was about 3:1. The first delay was performed about 3 weeks after tube flap preparation and 2nd delay was done 3 weeks later. So, we established good blood circulation inside the tube pedide flap that there wasn't and sign of necrosis. We performed complete obliteration of the oronasal defect on the hard palate with the tube pedicle flap from the left upper arm.
김정동,이기욱,조홍석,한수형,구명화 목원대학교 건축도시연구센터 2003 建築·都市環境硏究 Vol.11 No.-
As the first female artist of Western painting in the modern times, Hey-seok Na is the historical figure in Suwon, who went ahead of the times. Suwon City established the street of Hey-seok Na to commemorate her, in Ingye-dong, Paldal-gu. Street-establishment business for the historical figures is one of the factors with the biggest effects for the creation of local cultures. It has many merits such as the offer of fine view of city and resting area as well as giving the pride and educational effects to its residents. However, there are memorial hall or exhibitional hall not established in the street of Hey-seok Na, with the lacks in attractions and convenience facilities. With a poor decorative arrangement in the vicinity of the street, the meaning of street establishment and the image of Hey-seok Na are not well-delivered. Accordingly, the initial plan to make the street with citizens has not been well carried out. This research classified and analyzed the achievements and thoughts of Hey-seok Na, to embody it as the image and the concept of design to be expressed for the street was picked out. As a result, the image of Hey-seok Na, as the historical figure was set at modern times. the existing facilities in the street of Hey-seok Na was analyzed, centering on the time-factor of the modern times, deciding the spacial goal pursued by the street along with things to be improved.
박종연,김한수 강원대학교 정보통신연구소 2001 정보통신논문지 Vol.5 No.-
We studied about the lighting control system on pc using PLM(Power Line Modem). The PLM is composed of FSK IC-chip and the circuit for the power line communication. We developed the control proram using visual c++ language on PC for dimming the lamps. In this paper dimming controller was made with PIC16F974 and its communication speed was1200 boats rates.
腸內棲息菌에 對한 硏究 : 變形菌(Proteus)에 關한 硏究
石鐘聲,金漢壽,張友鉉,李承薰 現代醫學社 1969 現代醫學 Vol.10 No.2
The proteus group are known to be widely distributed in nature and also constitute one of the important micro-flora, of human intestines. The identification of the Proteus and further differentiation into 5 species are made chiefly by their biochemical activities, which are conventionally studied with the cultures grown at 37℃. Since it is known that the metabolic activities of bacteria are influenced by the physicochemical natures of environment, it is conceivable that results of bacterial identification and differentiation based on their biochemical reactions might be different when the culture conditions differ. Thus, 100 strains of the proteus isolated from various clinical specimens were grown aerobically at 37℃ and 22℃ and the patterns of their 1, biochemical activities under the different cultural conditions were studied. The results might be summarized as follows: 1) By the biochemical activities with the cultures grown at 37℃, 100 proteus strains were differentiated into 4 species; P. rettgeri 4, P. vulgaris 14, P. mirabilis 36, and P. morganii 46. 2) If the differentiation into the species was made by the biochemical activities with the cultures grown at 22℃, the 100 strains might be classified into, P. rettgeri 41, P. vulgaris 20, P. mirabilis 34, and P. morganii 5. 3) Regardless the difference of the culture temperatures, 47 strains among the 100 strains were identified into the same species of proteus; P. rettgeri 2, P. vulgaris 7, P. mirabilis 33, and P. morganii 5. 4) Biochemically the proteus strains appeared to be more active at 37℃ than at 22℃. 5) The distribution of the 100 strains among the clinical specimens were stool or recta swat 68, pus or discharge 14, urine 10 and miscelleneous specimen 8.
金哲鎭,卞種秀,李相韓 慶北大學校 齒科大學 1985 慶北齒大論文集 Vol.2 No.1
The purpose of this experimental study was to determine if periodontal tissues were damaged by the periodontal ligament injection administered by a pistol-type syringe, and if so, whether there would be subsequent repair. The periodontal ligament injections of 2% lidocaine with 1:100,000 epinephrine or normal saline were performed under the strong back-pressure at various sites on 3 dogs. Injected areas were examined at one hour, twenty-four hours, one week and two weeks postinjection. Histologic evaluation indicated that the disruption was very slight and was confined to the injected periodontal space and adjacent hard tissues. This slight damaged periodontium showed rapid repair, indicting that the periodontal ligament injection results in minor changes on the periodontium. So, the study would indicate that the procedure is safe to the periodontium.