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      • KCI등재

        꿀벌부채명나방[Galleria mellonella (L.)] 사육을 위한 경제적 인공사료 개발

        이승욱,이동운,추호렬,Lee, Seung-Wook,Lee, Dong-Woon,Choo, Ho-Yul 한국응용곤충학회 2007 한국응용곤충학회지 Vol.46 No.3

        본 연구는 꿀벌부채명나방의 경제적 사육을 위한 인공사료 개발을 위하여 수행하였다. 가격이 비싼 벌꿀을 대체하여 물엿과 설탕을 이용한 사료별 꿀벌부채명나방의 발육과 발육기간 및 산란수, 성충 수명 등을 조사하였다. 당 종류별 유충의 두폭과 체장은 비슷하였으나 체중은 1/2벌꿀 + 1/2물엿 처리가 255.5 mg으로 가장 무거웠고, 설탕은 144.3 mg으로 가장 가벼웠다. 꿀벌부채명나방 번데기의 체중도 1/2벌꿀+1/2물엿이 196.7 mg으로 가장 무거웠다. 당 종류별 꿀벌부채명나방의 유충 발육기간은 벌꿀이 포함된 사료가 30.9일로 가장 짧았으며 설탕은 36.5일로 가장 길었다. 꿀벌부채명나방의 용화율과 우화율은 79.3% 이상이었다. 모든 사료에서 꿀벌부채명나방의 교미 성충의 수명은 암컷이 $6.3{\sim}8.0$일이었고, 수컷은 $7.9{\sim}11.2$일이었다. 사료별 꿀벌부채명나방 암컷 성충의 산란수는 설탕물 첨가 사료에서 1,269개로 가장 많았다. 당 종류별 인공사료 조성에 대한 비용은 밀기울이 쌀겨보다 10배 정도 많았으며, 벌꿀은 물엿과 설탕의 6배와 13배였다. This research was carried out to develop economical artificial diets of the greater wax moth, Galleria mellonella (L.). Diets were mixed with malt or sugar instead of whole honey for cheaper ones. fecundity, developmental period, pupation rate, emergence rate and adult longevity of G. mellonella depending on diet were examined. The head width and length of larvae were not significantly different among diets tested. However, the weight of larva was the heaviest, 255.5 mg, at 1/2 honey + 1/2 malt diet and lightest, 144.3 mg, at sugar diet. The weight of pupa was also the heaviest at 1/2 honey + 1/2 malt representing 196.7 mg. Larval period was the shortest at honey diet as 30.9 days but the longest at sugar diet as 36.5 days. Pupation and emergence rates were over 79.3% at all diets. The longevity of mated females was ranged from 6.3 to 8.0 days and those of mated males ranged from 7.9 to 11.2 days. The highest number of eggs, 1269, was obtained at sugar diet. Artificial diets replaced by rice bran, malt, and sucrose reduced costs compared with wheat bran plus honey diet. The cost of rice bran was only 10% of wheat bran. Honey was much more expensive than malt and sugar, that is 6 and 13 times, respectively.

      • KCI등재

        임신간격에 관한 분석연구 : 한국농촌 일가 임여성을 대상으로

        이승욱,김정근 한국보건통계학회 1976 한국보건정보통계학회지 Vol.2 No.1

        This is one part of "Community Pregnancy Study" which has been carried out at three Myons of Chunseong Gun area, Kangwon Province over the period covering from May 1973 to April 1976 with financial assistance from UNFPA. In order to increase the sample size the author has included retrospective information for the period from May 1971 through April 1973. Among the three Myons where the study was actually done, one Myon, called Shindong Myon, has been a demonstration area of the Community Health Program by the School of public Health, Seoul National University since 1972. The intensive health care program is being carried out there for the purpose of field training for students, demonstration model for comprehensive health services, and health research activities. In the present analysis, the pregnancy interval is defined as the period between the end of a certain pregnancy and the beginning of next one, and is assumed to be made of two components: Ⅰ) Infecundable period including post·partum amenorrhoea and anovulatory period, Ⅱ) Fecundable period including ovulatory period. Since the pregnancy interval is the elementary basis for the enhancement of MCH, the author attempted to analyze from these data how the types of previous pregnancy terminations affected the following closed pregnancy intervals. This study attempted to compare by Myons Ⅰ) how the family planning programs prolong pregnancy intervals, Ⅱ) the differences among different types of previous pregnancy terminations, and Ⅲ) the impact of pregnancy interval to MCH. The results are summarized as follows. Ⅰ. The number born between 1935-1954 amounted to 655(91.9%) in total, which is reasonable when compared with the distribution of the married women of child-bearing age in general (Table 1). Ⅱ. By the number of women 543(76.4%) experienced one interval, 149(20.7%) two, and others over three (Table 2). Ⅲ. There were 912 cases in total and among them 735(80. 6%) did not practice contraception during the interval (Table 3). Ⅳ.The increase in the number of living children resulted in the lengthening of the pregnancy interval regardless of contraception (Table 4). Ⅴ. The mean of all the intervals was 20.8 months with the use of contraception and 13.4 without it (Table 5). Ⅵ. The pregnancy interval after live birth was 23.3 months with the use of contraception, and 6.3 without it (Table 5). Ⅶ. The interval after fetal death was 13.7 months with contraception and 6. 3 without it. Also the interval after spontaneous abortion was 11. 6 with contraception and 6. 1 without it after induced abortion 14. 5 with contraception and 6. 4 without it (Table 5). Ⅷ. It was observed that as the mothers' age at the beginning & end of interval increased, so did the length of interval regardless of contraception (Table 6). Ⅸ. The regression & correlation analyses were performed on the pregnancy interval by the mothers' age as shown in the end of Chapter Ⅲ. The findings from the results are as follows; Ⅰ. When the contraception is used, the pregnancy interval after live birth is very similar to the one medically recommended. Ⅱ. The longer pregnancy intervals are observed for the higher brackets of mothers' age. Ⅲ. The experience of contraception prolonged the pregnancy interval by 7. 4 months. Ⅳ. It may be desirable to concentrate on the practice of contraception, which is found to be very effective method of family planning, rather than the induced abortions.

      • SCOPUSKCI등재
      • KCI등재

        MMORPG 게임엔진의 성능개선을 위한 분할공간에서의 충돌검출

        이승욱,Lee, Sung-Ug 한국정보처리학회 2003 정보처리학회논문지B Vol.10 No.5

        최근 하드웨어의 급속한 발전으로 3차원 그래픽의 적용 분야도 다양화 되어가고 있다. 3차원 가상도시를 배경으로 하는 3D MMORPG(Massive Multi-play Online Role Playing Game)와 같은 게임을 설계하기 위하여 필요한 세부 기술은 다양한 이론이 병합되어야 한다. 3D MMORPG 게임엔진은 거대한 3차원 도시의 수많은 빌딩과 개체론 실시간으로 빠르게 처리되어야 하기 때문에 렌드링의 처리뿐만 아니라 속도에 영향을 미치는 많은 요소를 가지고 있다. 이러한 게임엔진의 설계에서 중요하게 다루어지는 것은 처리 속도이다. 기존의 3D MMORPG에서 충돌검출의 방법으로 경계상자를 적용하지만 이 방법은 거대지형에서의 충돌 검출 시 속도가 느려지기 때문에 적용하기에는 바람직하지 않다. 따라서 본 논문은 거대지형상의 3D MMORPG 게임에서 발생되는 충돌검출 속도를 향상시키고자 한다. 즉 이러한 처리에서 본 논문은 다음과 같이 제시한다. 첫째 폴리곤의 충돌검사를 모두 하지 않고 빠른 시간에 충돌검출을 판단할 수 있다. 둘째 경계상자의 충돌검출에 대한 비용이 3차원 개체 개수에 대해 비례하여 증가하는 데에 대한 개선 방법을 제시한다. 그 처리 과정은 3D MMORPG 넓은 가상공간을 동적으로 처리하기 위해서는 제한적 OSP를 사용하여 공간분할을 한다. 분할된 3차원 공간을 계층적 경계상자를 이용함으로써 충돌검출에 필요한 개체를 검색하고 이론 통하여 충돌검출 속도를 개선시킬 수 있을 것이다. Application field of third dimension graphic is becoming diversification by the fast development of hardware recently. Various theory of details technology necessary to design game such as 3D MMORPG (Massive Multi-play Online Role Flaying Game) that do with third dimension. Cyber city should be absorbed. It is the detection speed that this treatise is necessary in game engine design. 3D MMORPG game engine has much factor that influence to speed as well as rendering processing because it express huge third dimension city´s grate many building and individual fast effectively by real time. This treatise nay get concept about the collision in 3D MMORPG and detection speed elevation of game engine through improved detection method. Space division is need to process fast dynamically wide outside that is 3D MMORPG´s main detection target. 3D is constructed with tree construct individual that need collision using processing geometry dataset that is given through new graph. We may search individual that need in collision detection and improve the collision detection speed as using hierarchical bounding box that use it with detection volume. Octree that will use by division octree is used mainly to express rightly static object but this paper use limited OSP by limited space division structure to use this in dynamic environment. Limited OSP space use limited space with method that divide square to classify typically complicated 3D space´s object. Through this detection, this paper propose follow contents, first, this detection may judge collision detection at early time without doing all polygon´s collision examination. Second, this paper may improve detection efficiency of game engine through and then reduce detection time because detection time of bounding box´s collision detection.

      • KCI등재

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