Back Propagation 알고리즘을 이용한 산업용 로봇의 견실제어

윤주식,이희섭,윤대식,한성현 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-

Neural networks are works are used in the framework of sensor based tracking control of robot manipulators. They learn by practice movements the relationship between PSD(an analog Position Sensitive Detector) sensor readings for target positions and the joint commands to reach them. Using this configuration, the system can track or follow a moving or stationary object in real time. Furthermore, an efficient neural network architecture has been developed for real time learning. This network uses multiple sets of simple back propagation networks one of which is selected according to which division(corresponding to a cluster of the self-organizing feature map) in data space the current input data belongs to. This lends itself to a very training and processing implementation required for real time control.

외국인 이주자의 이주과정에 관한 연구

송주연 대구대학교 다문화사회정책연구소 2011 현대사회와 다문화 Vol.1 No.2

전 지구적으로 세계화 현상이 지속되면서 국경을 넘어 이동하는 이주자의 수가 급격히 증가하고 있다. 국내에서도 외국인 이주자의 증가에 따라 이들을 이해하기 위한 다양한 사회적·학제적 노력이 이루어지고 있다. 그러나 이러한 노력의 대부분은 외국인 이주자들 중에서도 결혼이주자와 이주노동자에 국한되어 있고, 관심의 대부분이 한국 사회 적응에 관한 부분에 집중되어 있다. 따라서 본 연구는 보다 진정한 다문화 사회로 나아가기 위해서 외국인 이주자에 관한 연구가 이주자들의 유형과 관심 영역의 측면에서 보다 다면적인 접근을 시도해야 할 필요성을 제기한다. 이러한 의식 하에 본 연구에서는 외국인 이주자의 범위를 결혼이주자와 이주노동자뿐만 아니라 최근 증가하고 있는 전문직 이주자와 외국인 유학생까지 포함하여 4가지 유형으로 분류하였다. 또한 네 가지 유형의 외국인 이주자들을 대상으로 한 국으로 이주하기까지의 과정을 면밀히 살펴보고자 한다. With the continuous phenomenon of globalization around the world, there have been an increasing number of foreign immigrants who crossed the border. There have been various social and interdisciplinary efforts for a better understanding along with the increase in the number of foreign immigrants in our country. However, most of such efforts have been confined to marriage migrants and migrant workers and most of emphasis has been put into the adaptation to Korean society. In this regard, this study suggested the necessity of taking multifaceted approaches in research of foreign immigrants, in terms of their types and the research’s sector of their interest, in order for our country to become a truly multicultural society. Keeping this in mind, this study divided foreign immigrants into four types, by including not only marriage migrants and migrant workers, but also professional migrants and foreign students who have been on the increase recently in South Korea. By looking closely into the process of the migration of each of four types of migrant people, this study attempted to provide people with a fundamental, true understanding of them.

집먼지진드기에 대한 강화약쑥 추출액의 기피효과

안윤주, 지차호 충북대학교 동물의학연구소 2009 Journal of Biomedical and Translational Research Vol.10 No.1

본문참고

男子 體操競技의 自由種目 終末技 着地 成功率에 關한 硏究

鞠倫柱,河永俊 仁荷大學校 스포츠科學硏究所 1993 論文集 Vol.5 No.-

Among the athletes who participated in the gymnastic contest of the eleventh Puk-kyon Asian Tournament in 1990, thirty-eight athletes (in five events) took part in the third tournament (the final game of the each event), for their records in the first tournament were excellent. They were selected for studying and analyzing the success rate of the landing of the final technique among the performance of the event, (floor exercise, ring, long horse, paraller bar, horizontal bar) classified by its contents and the styles of the body. The results were as follows; 1. the success rate of the landing-classified by the contests of the technique. 1) Floor exercise: The rate of "Double salto backward tucked" technique proved the highest in floor exercise, whose rate was 100%, That of "Double salto backward Tucked with 1/1 turn" technique was 84%, and that of "Double salto backward stretched" technique rate was 66%. 2) Ring: The rate of "Double salto backward stretched" technique was 84%, that of "Double forward piked with 1/2 turn" technique was 66%. 3) Long hourse: The rate of "Round-off, hand spring backward and salto backward stretched with 1/1 turn "technique proved the highest and that of "hand spring and double salto forward tucked" technique proved lowest 0%. 4) Paralled bar: The rate of "Double salto backward piked" technique was 86%, that of "Double salto forward tucked" technique was 85%, and that of "From handstand at end of bar: forward swing to hang to hang and double salto backward" technique was 80%. 5) Horizontal bar: The rate of "Double salto backward stretched" technique proved the highest, whose rate was 100%, and of "Triple salto backward tucked" technique proved the lowest, whose rate was 40%. 2. The success tate of the landing-classified by the style of the body. 1) The rate of "Stretched" style was 77%, in twenty-six times' executions, That of "Piked style was 70% in six times' executions and that of "tucked" style was 60% in fourteen time's executions.

마스낵 제조를 위한 당절임 공정의 최적화

한주영,김남우,황성희,윤광섭,신승렬 한국식품저장유통학회 ( 구 한국농산물저장유통학회 ) 2003 한국식품저장유통학회지 Vol.10 No.3

대부분의 마는 건조분말제품으로 가공되고 있는데, 마를 다양한 가공품으로 개발하기 위한 방법의 하나로 삼투건조라는 전처리를 행하여 건조에 의한 품질손상을 억제하고 단맛으로 기호성을 높인 건조 마 제품을 얻을 수 있는 당절임 공정의 최적화를 시도하여 최적조건을 얻고자 하였다. 침지시간을 3-7시간, 온도는 20-60℃, 당농도는 30-70%로 하는 중심합성계획법으로 실험을 설계하여 최적화하였다. 이때의 종속변수로는 침지 후 수분함량, 당도, 색도, 그리고 동결건조후의 수분함량과 재수화율로 하여 분석한 결과 동결건조 후 수분함량에 대해서는 유의성이 없었다. 세 가지의 공정변수 중 온도의 영향이 가장 적어 온도를 중심으로 고정한 후 침지시간과 당농도의 최적조건을 찾은 결과, 수분함량을 66-70%, 당도를 25-30%, L 75이상, a-2.1-2.4, b를 5이상 그리고 재수화율을 200-250을 제한 조건으로 하는 조건으로 하는 영역은 5.2-5.9시간, 56-61%로 나타났다. This study was conducted to the optimize sugaring process of yam for development of new snack product and enhancement acceptability. Three variables by five level central composite design and response surface methodology were used to determine optimum conditions for sugaring time, temperature and concentration. Optimization of the process was conducted using the combination of the moisture content, solid content, color and rehydration ratio. The regression polynomial model was suitable (P>0.05) model by Lack-of-Fit analysis with highly significant. To optimize the process, based on surface response and contour plots, superimposing the individual contour plots for the response variables. The optimum conditions for this process were 5.5 hours and 58% at 40℃ under the optimum of restricted variables as moisture content was 66 to 70, solid content was 25 to 30%, L value was above 75, a value was -2.1 to -2.4, b value was above 5 and rehydration ratio was 200 to 250.

하악의 교정용 미니 임플랜트 식립 부위에서의 피질골 두께와 치근간 거리 : 3차원으로 재구성한 CT 영상을 이용한 연구

임주은,임원희,전윤식 대한치과교정학회 2008 대한치과교정학회지 Vol.38 No.6

교정용 미니 임플랜트의 식립 부위에 대한 연구는 주로 구치부 치근사이 공간에 집중되어 왔다. 본 연구의 목적은 전치에서 구치에 이르는 치아간의 피질골 두께와 치근간 거리를 측정함으로써 교정용 미니 임플랜트 식립 시에 참고 할 수 있는 임상적 지침을 제공하는 것이다. 연구를 위해 성인 28명(남자 14명, 여자 14명)의 CT를 V-works 4.0 을 이용하여 3차원 영상으로 전환하였다. 중절치에서 제2대구치에 이르는 모든 치아 사이를 치간 접촉점을 지나면서 교합 평면에 수직이 되도록 잘라 90° 단면을 형성한 후 치조정으로부터 높이를 달리하여 0, 15, 30, 45° 의 각도를 주어 피질골의 두께를 측정하였다. 또한 치조정으로부터 2, 4, 6 mm 높이에서 교합 평면에 평행하게 잘라 90° 단면을 만든 후 치근간 거리를 측정하였다. 피질골의 두께는 전치부에서 구치부로 갈수록 두꺼워지는 경향을 보였으며, 5-6과 1-1 사이, 6-7과 1-1, 1-2, 2-3 사이에서는 유의한 차이를 보였다 (p < 0.05). 치조정으로부터 2 mm 높이를 제외한 대부분의 위치에서 각도가 증가함에 따라 피질골의 두께가 급격히 증가하는 경향을 보였고, 4 - 6 mm 높이에 식립시 30 - 45˚ 이상의 각도를 부여해야 피질골 보유량(engage 양)에 유의한 차이를 보였다. 치근간 거리 측정 결과 4-5, 5-6, 6-7 사이가 치근 손상 없이 미니 임플랜트를 식립하기에 적절한 위치라고 볼 수 있었고, 1-1과 1-2 사이는 미니 임플랜트 식립을 위한 충분한 치근간 거리를 제공하지 못하는 것으로 나타났다. 본 실험의 결과로 볼 때 피질골과 미니임플랜트의 접촉면을 증가시키기 위해서는 치조정에서 치근단부로 4와 6 mm 되는 부위에서 30˚ 또는 45˚ 로 식립하는 것이 유리할 것으로 보인다. The purpose of this study was to provide clinical guidelines to indicate the best location for mini-implants as it relates to the cortical bone thickness and root proximity. Methods: CT images from 14 men and 14 women were used to evaluate the buccal interradicular cortical bone thickness and root proximity from mesial to the central incisor to the 2nd molar. Cortical bone thickness was measured at 4 different angles including 0°, 15°, 30°, and 45°. Results: There was a statistically significant difference in cortical bone thickness between the second premolar/ first permanent molar site, central incisor/central incisor site, between the first/second permanent molar site and in the anterior region. A statistically significant difference in cortical bone thickness was also found when the angulation of placement was increased except for the 2 mm level from the alveolar crest. Interradicular spaces at the 1st/2nd premolar, 2nd premolar/1st permanent molar and 1st/2nd permanent molar sites are considered to be wide enough for mini-implant placement without root damage. Conclusions: Given the limits of this study, mini-implants for orthodontic anchorage may be well placed at the 4 and 6 mm level from the alveolar crest in the posterior region with a 30° and 45° angulation upon placement.

全南地域의 水稻作 害忠調査

尹柱敬,崔福衍,金光秀 全南大學校 農漁村開發硏究所 1975 農業科學技術硏究 Vol.10 No.-

1975年 7月 4日~ 9月 25日에 和順과 光山의 水畓作地帶에서 發生되고 있는 昆蟲을 1週日 間隔으로 25回 往覆으로 採集하였던 바 다음과 같은 結果를 얻었다. 1) 採集된 害蟲은 4目 12科 13種이며 여기에 寄生하는 天敵으로는 3目 3科 4種과 거미류 및 청개구리로 나타났다. 2. 優占種으로는 光山에서는 벼멸구, 흑명나방, 끝동매미충이며, 和順에서는 끝동매미충애멸구, 흰등멸구, 벼잎벌레였다. 3. 綜合防除區는 一般農家防除區에 比하여 天敵 活動이 活發하였으며 그 結果도 뚜렷한 것으로 나타났다. 4. 光山과 和順에서의 收量調査를 하여 본 결과 二個地域 모두다 無防除區에 比하여 防除區는 20%의 內外의 增收를 가져왔다. Injurious insects dwelling in paddy growing zones of Hwasoon and Kwangsan in Chonnam were collected over 25 times with a 7-day interval from July 4 to September 25, 1975. The results were as follows: 1. Collected insects were 13 species in 12 families of 4 orders. In addition to these insects, 4 species in 3 families of 3 orders and Anura and Araneae were as their natural enemies. 2. Dominant species found in Kwangsan area were Nilaparvata Iugens Stal, Cnaphalocrocis medinalis Guenee, Nophotettix bipunctatus cinctiops Uhler and in Hwasoon area were Nephotettix bipunctatus cinctiops Uhler, Delphacodes striatella Fallen, Sogota furcifera Horvath, and Lema oryzae Kuwayama. 3. Since the natural enemies were more active in the integrated control plots compared with the ordinary farmers control plots, It can be concluded that the integrated control was more effective. 4. Grain yield per hectare was increased by about 20% in the control plots compared with that of the decontrol plots in both of Kwangsan and Hwasoon.

서울시 역세권 주차장의 운영 합리화에 관한 연구

고주연,금기정,김현정,김현주,홍영식 明知大學校 産業技術硏究所 1995 産業技術硏究所論文集 Vol.14 No.-

In this study, we study about park and ride facilities at subway station in seoul, since we have perceived that park and ride facilities at subway's station's serious problem on its operation and usage. We practiced the interviews and transfer rate survey so found these problems of operation usage problem, spatial utilization, private park and ride facilities. Through the analysis of these problem we propose the adequate alternatives and we hope that our study contribute operation rationalization of park and ride facilities at subway station.

월경전증후군 여대생의 영양소 섭취량 및 식품선호도와 혈액성상 조사

김주연,안홍석 대한지역사회영양학회 2008 대한지역사회영양학회지 Vol.13 No.4

This study was performed to investigate nutritional intakes and preference food and blood composition of female college students of premenstrual syndrome. Based on physical measurement test results, both groups showed no noticeable difference and both groups were within the normal range according to body composition analysis. In terms of nutrients consumption, results showed nutritional intakes more than EAR (estimated average requirements) included phosphorus > vitamin B6>vitamin B1, while nutritional intakes less than EAR were vitamin A > vitamin B2> calcium > folic acid. A significant difference was observed for vitamin C intake (p < 0.05). The overall mean values of basic blood (WBC, RBC, Hct, and Hb), sex hormone (Estrogen, Progesterone), aldosterone, cortisol, Cu, Zn, and Ca, Mg indices in female college students were within the normal range and there was no significant difference between the PMS group and the Normal group. In conclusion, vitamin C intake of the PMS group showed a level of 84.8% EAR. Therefore vitamin C supplement can be beneficial to relieve the PMS Syndrome.

인터넷 상의 다중공격에 대비한 침입탐지시스템 모델 설계

최주영,최은정,이지윤,윤세안,김명주 서울여자대학교 자연과학연구소 2000 자연과학연구논문집 Vol.12 No.-

Since modern attacks against information system utilize large-scale and distributed network, they become more versatile and complicated. We propose a new model of intrusion detection system, IDSS that can effectively detect multiple resource attack from to the inter-system and intra-system. IDSS (Intrusion Detection System for Seoul women's university) is optimized in agent unit to detect multiple attacks on network effectively and designed to and respond to them in real time.