http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
예인형 수동소나에 적합한 전방위 표적 자동탐지 및 추적기법 성능 분석
서익수,Seo, Ik-Su 한국군사과학기술학회 2006 한국군사과학기술학회지 Vol.9 No.3
In towed array passive sonar system, sonar operators cannot detect and track the all targets simultaneously in the omni-directional area by just Operator Initiated Tracking(OIT). In this paper, omni-directional automatic target detection and tracking algorithm is described and optimize the parameters through ocean data to overcome the drawbacks of OITs. The algorithm is verified through sea trials with submarines.
자돈하리증(仔豚下痢症) 및 Salmonella 인공감염증(人工感染症)에 대한 Mecadox의 치료 및 예방효과
서익수,정길택,한인규,Seo, Ik Soo,Chung, Gill Taik,Han, In Kyu 대한수의학회 1975 大韓獸醫學會誌 Vol.15 No.1
The effect of mecadox, trade name of carbodox, in the treatment of colibacillosis and in the prevention of experimental Salmonella infection in swine was studied throughout the experimental period of four weeks using a total of 70 piglets. The results obtained are as followings. 1. Mecadox was found moderately effective as a therapeutic for colibacillosis of piglets when administered orally as pig doser or added to the feed at the ratio of 50 ppm with or without the addition of vitamin A and $D_3$. 2. In the prevention of experimental infection with Sal. choleraesuis, mecadox was found highly effective. As judged by clinical symptoms such as diarrhea and fever together with the confirmation of excretion of the causative organisms in the feces, the best result was obtained with mecadox pig doser followed by mecadox (50ppm) with vitamin A and $D_3$, and mecadox (50 ppm) without the vitamins in the descending order of effectiveness.
닭혈청(血淸)에 의한 면양적혈구(緬羊赤血球)의 용혈(溶血)에 관한 연구(硏究)
서익수,Seo, Ik Soo 대한수의학회 1974 大韓獸醫學會誌 Vol.14 No.1
Hemolytic reaction of normal fresh chicken serum on sheep erythrocytes was studied and the following experimental results were obtained and summarized. 1. Chicken sera, 258 (78%) out of 344 samples showed hemolytic activity on sheep erythrocytes. 2. Distribution of a different hemolytic titer of chicken sera was not dependent to sex and age difference of test chicken. 3. Hemolytic activity of serum component obtained from normal fresh chicken was heat inactivated at $56^{\circ}C$. 30 minutes heating. 4. The most enhanced hemolytic activity of chicken serum on sheep erythrocytes was observed at the incubation temperature of $46^{\circ}C$. 5. The most effective pH for the hemolytic reaction of chicken serum on sheep erythrocytes was observed at 7.0, and pH 6.0 or 8.5 resulted less or no hemolysis. 6. Hemolytic reaction of chicken serum and sheep erythrocytes required Mg? and Ca? ions as, co-factor, and the former was required more compared to the latter. 7. Hemolytic activity of chicken serum was observed in ChC 2, 4 fraction but not in ChC 1, 3, ChC 3, 4, ChC 1, 2, 4 and ChC 1, 2, 3 fractions. 8. In electron micrography, morphological changes of sheep erythrocyte membrane by normal chicken serum was similar to that of immune hemolysis: that was, the hemolytic hole was circular and it was surrounded with a white ring. 9. Electron micrography of morphological changes on sheep erythrocyte membrane indicated that the size of hemolytic hole and white ring were functional to the chicken serum concentration used and reaction time.
서익수,Seo, Ik Soo 대한수의학회 1975 大韓獸醫學會誌 Vol.15 No.1
The rate of growth of Leptospires were studied by culturing in Korthof's media and Cox's liquid media which were treated at four different temperatures. The effect of thiamine hydrochloride in the culture of leptospires were also studied. The results obtained were summerized as followings: 1. The best growth of Leptospira icterohaemorrhagiae and Leptospira canicola was observed in Korthof's media with the rabbit serum heated for 60 minutes at $56^{\circ}C$. 2. A good degree of growth of Leptospira icterohaemorrhagiae and Leptospira canicola was observed in both Cox's liquid media with rabbit serum heated for 30 minutes at $100^{\circ}C$ and with fresh rabbit serum. 3. The growth of Leptospira was enhanced by adding small amount of thiamine to the both media which were shown to be unsatisfactory for the growth of the organisms. 4. Culture of leptospires were attained by simply heating for 30 minutes at $100^{\circ}C$ both Korthof's media and Cox's liquid media containing rabbit serum obtained without aspetic procedures.
서익수 東亞大學校 1964 東亞論叢 Vol.2 No.2
Chicken serum, without heat inactivation, was studied for its hemolytic activity on sheep erythrocytes under the presence of Mg++ and Ca++ in the veronal buffered saline. More than 80 per cent of chicken sera out of 214 samples showed their hemolytic activity on the sheep erythrocytes in the various degree. The activity was not affected by the difference of chicken age and sex. The activity appears to be heatlabile and a maximum activity was shown at 46˚C and PH 7.0. Although an excess Ca++ in the system inhibited the hemo-lytic action, Mg++ activated the action.
Mycoplasma gallisepticum의 血淸添加 PPLO 培地에서의 培養에 관한 硏究
서익수,成在基 서울대학교 1973 서울대학교 論文集 Vol.23 No.-
1. Growth suporting activity, for Mycoplasma gallisepticum, either heat inactivated or fresh swine serum was superior among cattle, horse and rabbit sera. 2. Growth suporting activity, for Mycoplasma gellisepticum, of heat inactivated animal sera, namely cattle, horse, swine and rabbit showed almost equal activity of the normal fresh sera.
능동소나 탐지 성능 향상을 위한 피크 신호의 통계적 특징 기반 단일 핑 클러터 제거 기법
서익수,김성원,Seo, Iksu,Kim, Seongweon 한국음향학회 2015 韓國音響學會誌 Vol.34 No.1
In active sonar system, clutters degrade performance of target detection/tracking and overwhelm sonar operators in ASW (Antisubmarine Warfare). Conventional clutter reduction algorithms using consistency of local peaks are studied in multi-ping data and tracking filter research for active sonar was conducted. However these algorithms cannot classify target and clutters in single ping data. This paper suggests a single ping clutter reduction approach to reduce clutters in mid-frequency active sonar system using echo shape features. The algorithm performance test is conducted using real sea-trial data in heavy clutter density environment. It is confirmed that the number of clutters was reduced by about 80 % over the conventional algorithm while retaining the detection of target. 능동소나를 이용한 대잠전 환경에서 클러터는 표적탐지 및 추적성능을 저하시키는 가장 큰 원인 중 하나이다. 본 논문에서는 중주파수 능동소나에서 표적 피크 신호의 통계적 특징을 이용한 단일 핑 클러터 제거 기법을 제안한다. 기존의 표적 피크 영역을 제외한 잔향 존재 영역에서 오탐지율을 줄이는 기법이나 여러 핑을 누적하여 기동 패턴을 분석하여 표적과 클러터를 구분하는 기법들의 단점을 보완하기 위하여 단일 핑 데이터의 표적 피크 영역에서 통계적 특징 정보를 이용하여 클러터와 표적신호를 구분한다. 실제 표적을 이용한 해상실험에서 성능을 검증하였으며 기존 대비 클러터가 약 80 % 이상 제거되는 것을 확인하였다.