대추나무 미친병에 관한 연구 (1) - 이병식물의 (罹炳植物) 내외형태학적 특징 및 그 명명에 대해서 -

홍순우(Soon Woo Hong),김종진(Chong Chin Kim) 한국식물학회 1960 Journal of Plant Biology Vol.3 No.1

HONG, Soon-Woo, & KIM, Chong-Chin: A study of virus disease on chinese date tree (I). On the external and the internal morphogical characteristics of disease inrected plants. Kor. Jour. Bot. 3 (1). 32-38. 1960 Since the peeuliar virus disease of chinese date tree (Zizyphus jujuba Mill. var. inermis Rehd.) has been noted in South Korea around 1950, 70% to 80% of the economically important trees have been either completely destroyed or infected with the virus, severe damage has been noted, particularly, across the area ranged from middle east to the middle part of Korea, including Seoul area. Yoon,-Koock-Byung in 1958 first reported the disease and described it might be caused by a kind of yellows. But he did not conform in his paper that the disease is pecisely caused by yellows virus. The authors, hereby intend to identify the true cause of the disease of the chinese date tree by studying the external symptoms of the disease and the internal morphological characteristics of the diseaset plant which shows various abnormalities in contrast to the healthy checks. In view of fact that the leaves of the infected plants become yellowish in color similar to the peach yellows, aster yellows, it is likely to be identifiable as the common yellows. Furthermore, the abnormal characteristics observed by the authors are as follow: The floral organs such as petals, sepald, stamens, and pistil turn into vegetative leaves, the leaves on heavily infected plant appear as small sized one and also showing as a common witch`s broom like symptom. There are also an occuring of numerous advantitious shoots developed from both of stems and roots. The amount of photosynthetc starch grains increses iIn parenchymatous cells, necrosis takes place in mesophyll, Partlcularly, Palisade Parenchyma in the leaves of infected plants are distinguished in contrast to the healthy checks. From the symptoms and the present experiments described above, the authors are belived that the disease of chinese date tree is not caused by the yellows. It appears the disease is rather similar to the symptoms of sandal spike virus which was noted in India early in this centry. But the host plant of sandal disease, Santalum album L. and the insect vector, Jassus indicus Wal., have never been reported in Korean flora and the founa. The temperature and the other environmental factors is auite different Korea ard India. Thus the authors believe that the peculiar disease must be an endemic new virus origin in Korea and must be called as shoot cluster disease of chinese date tree.

침입패턴 분석을 통한 침입자 역추적 시스템

우종우 국민대학교 2002 기초과학연구소 논문집 Vol.21 No.-

최근의 인터넷 활용이 급속히 증가함에 따라 이에 따른 피해 또한 급속히 확산되고 있다. 이러한 보안관련 피해에 능동적으로 대처하기 위해 침입 탐지 시스템(Intrusion Detection System: IDS)이 다양하게 연구 개발되고 있으나 완전한 방어를 위해서는 지속적인 연구가 필요한 실정이다. 이러한 IDS의 주요 기능중의 하나는 침입 사실을 신속하고 정확하게 판단하는 일이다. 본 논문에서는 이러한 침입행위에 대한 정확한 분석을 하기 위하여 시스템 로그를 분석하는 방법을 사용하였다. 또한 기존에 파악된 특정 유형의 패턴은 지식베이스에 기록하여 규칙기반으로 탐지하며, 기존 유형에서 변형된 패턴은 점수를 부가하는 방법을 적용하였고, 새로운 유형의 공격에 대해서는 데이터 마이닝 기법을 사용하여 관리자가 효과적으로 시스템을 관리하는데 도움을 줄 수 있게 하였다.

춘천지역 도시열섬의 특성과 대기질에 미치는 영향

이종범,김용국,김태우 江原大學校 附設 環境硏究所 1994 環境硏究 Vol.11 No.-

An observational study of urban heat is1and was carried out using field data obtained during 6 day in May and August 1992 in Chunchon(Population size 180,000). Air temperature was measured at 04 points along two sampling routes by thermisters attached to cars, Both routes cover urban and rural area and across the center of urban area, Continuous observation of air sonde was performed to clarify heights of nocturnal boundary layer(NBL) at the center of urban area. Surface meteorological observations were performed at both urban and rural site. This study showed that heat island Phenomena was obvious1y observed at the urbanized area during the night time With low wind Speed. The average NBL heights extended to about 100 meters, but varied with meteorological conditions. After sunset the air temperature decreased with time at both sites and cooling rate at the urban site was Heater than the rural site. The maximum heat island intensity was 7.5°C at 21 LST May 4. Using the two meteorological data gets obtained from urban and rural sites, the air Pollutant concentration was calculated by Gaussian plume model which can obtain not only horizontal distribution of concentration but also vertical distribution. The result indicated that the concentration resulted from urban meteorological data set was lower than that from rural meteorological data set. It was also calculated that the air pollutant extended to higher level in urban meteorological data set than that in rural meteorological data set.

유구치 기성 금관의 변연 적합도에 관한 연구

우주형,장철호,김정욱,장기택,김종철 대한소아치과학회 2007 大韓小兒齒科學會誌 Vol.34 No.1

본 연구의 목적은 발거된 기성 금관 수복 유구치를 대상으로 변연 적합도를 관찰 분석하는 것이다. 서울대학교 치과 병원 소아치과에서 수거한 3M사의 기성 금관 수복 유구치를 대상으로 하였다 상악 제 1유구치 42개, 상악 제 2유구치 25개, 하악 제 1유구치 37개, 하악 제 2유구치 28개를 대상으로 기성 금관의 변연에 따라 치근 절단한 후 단면을 Fine Pix S602 디지털 카메라로 촬영한 후 Kappa image base program을 이용해 두각 부위 및 임의로 20 부분의 변연 간격과 전체 기성 금관 면적 중 변연 간격의 면적이 이루는 비율을 측정하여 다음과 같은 결과를 얻었다. 1. 평균 변연 간격은 상악 제 2유구치, 하악 제 1유구치, 하악 제 2유구치, 상악 제1 유구치 순으로 높았다 (P<0.05). 2. 평균 변연 간격 면적의 비율은 치아의 종류에 관계없이 약 20%를 상회하는 값을 보였다. 3. 상악 제 1,2유구치에서는 근심면의 변연 간격이 가장 컸고, 하악 제 1유구치에서는 원심 설면, 하악 제 2유구치에서는 협면에서 변연 간격이 가장 큰 값을 보였다. Stainless steel crowns are invaluable restorative material for the treatment of badly broken down primary teeth in pediatric dentistry. But it is difficult to fit margin because selection of size is not easy and they are not adjusted for Korean children. The purpose of this study was to examine and analyze the marginal adaptation of stainless steel crown of posterior primary tooth. Marginal surface was taken by Fine Pix S602 digital camera and measurements of crown were recorded at 20 points that were randomly selected for marginal gap evaluation by Kappa image base program. 1. Mean marginal gap were large upper 2nd primary molar, lower 1st primary molar, lower 2nd primary molar, upper 1st primary molar in order(p<0.05). 2. Mean marginal surface dimension ratio was more than 20% irrespective of tooth. 3. Largest amount of marginal gap was shown at mesial surface in upper 1st, 2nd primary molar and distolingual surface in lower 1st primary molar, buccal surface in lower 2nd primary molar.

Active Network 환경에서의 에이전트기반 침입자 추적시스템

우종우 국민대학교 2003 기초과학연구소 논문집 Vol.22 No.-

기존 단일 호스트 환경에 기반 하여 설계 및 개발되어온 침입 탐지시스템(Intrusion Detection System: IDS) 은 수동적인 탐지만을 목적으로 설계되었다. 따라서 새로운 공격기법에 의한 탐지 및 대응, 그리고 보다 큰 네트워크로의 확장면에서 구조적인 결함을 가지고 있다. 이러한 IDS의 구조적인 문제점의 해결방안으로 액티브 네트워크(Active Network) 기반의 IDS에 관한 연구가 시작되고 있다. 액티브 네트워크는 패킷 스위칭 네트워크 상에 프로그램 가능한 라우터 등인 액티브 노드들을 배치하고, 사용자의 요구에 상응하는 적절한 연산을 위한 데이터와 프로그램으로 구성된 스마트 패킷(smart packet)에 대하여 수행 가능하게 하는 접근 방법이다. 본 논문에서는 이를 기반으로 자율적이며 지능적인 에이전트로 구성된 멀티 에이전트 기술을 액티브 노드에 적용함으로써 기존 IDS 보안 메커니즘에서 보다 더 진보된 능동적이고, 적극적인 대응을 위한 보안 메커니즘을 제공하여 네트워크 공격에 의한 피해 최소화와 신속한 대응이 가능한 멀티 에이전트 기반 공격 대응 메커니즘을 및 이의 적용이 가능한 액티브 네트워크기반의 설계를 제안한다.

世界 第二次 大戰까지의 國際關係와 國際機構에 對한 考察

禹鍾玲 梨花女子大學校 法政大學 1967 法政學報 Vol.10 No.-

Optimal Parenthesization 동적 프로그래밍의 고속처리를 위한 시스토릭 어레이의 설계

우종호,신동석,성기택 釜山水産大學校 1990 釜山水産大學 硏究報告 Vol.30 No.1-2

An 1-dimensional systolic array for optimal parenthesization dynamic programming processing is designed. To get an 1-dimensional systolic array, 2-dimensional systolic array was projected and the time scheduling was done using the block pipeline time of 2-dimensional array. The designed 1-dimensional systolic array has n processing elements. [(n+1)/2](n-1)+3n-1 processing time, only the unidirectional paths, and constant�/O channels independent upon the problem size(n is the problem size). The ratio of its processor utilization to that of 2-dimensional array is (2n�+n-1)(n�+5n-4).

조합논리회로에 있어서 복수결함에 대한 Random Testing의 확률적 해석

禹鍾鎬 釜山水産大學校 1983 釜山水産大學 硏究報告 Vol.23 No.2

조합논리회로에 있어서 random testing을 해석하였다. 단일 결함을 일반화시켜 복수결함에 대해서 논했다. 해석과정은 다음과 같다. 첫째, 복수결함에 대해서 등가의 축소된 복수결함을 구한다. 둘째, Boolean difference를 이용하여 이 결함에 대한 test pattern을 구한다. 셋째, 입출력신호확률에 관한 이론을 이 test pattern에 적용한다. 이 방법의 장점은 회로구성에 대한 제한없이 test pattern에 따른 random testing을 해석할 수 있다는 것이다. 또한 컴퓨터시뮬레이션을 통해서 이론의 타당성을 확인했다. A probabilistic analysis of random testing for combinational circuits has been studied. The test pattern to the multiple fault can be obtained by the Boolean difference concepts. If the primary input probability is applied to this test pattern, we can obtain the probability of the multiple fault detection. The theory was verified by the computer simulation.

유고슬라비아의 初期外交政策

李宇榮,鄭鍾泰 경북대학교 1987 社會科學 Vol.6 No.-

The Yugoslav Communist Party had been weak until World War Ⅱ. For the twenty years before the war, Yugoslav Communists had been severely criticized by the Comintern because of their factionism. But, when Josip Broz Tito became Secretary-General of the Yugoslav Communist Party in 1937, he began to reorganize the party. During World War Ⅱ, Yugoslav Communist Party could grow because Communist-led Partisans attracted thousands to their ranks by their slogan of the unity of all Yugoslav nations against the invaders and the traitors. Based on their own revolutionary traditions, Yugoslavia became the most powerful in the Eastern Europe except the Soviet Union. Therefore, Soviet-Yugoslav conflict was inevitable. After the war, the relations with the Soviet Union had been deteriorating because of Yugoslavia's persistently independent national policy. The quarrel came into the open in June 1948, when Yugoslavia was expelled from the Cominform. The ability of the Yugoslav Communists to resist was due to the strong national base. The Communist Party had developed as a national party. Tito developed a Federation that might eventually include most of the Communist States of Eastern Europe. The Soviet Union couldn't tolerate such a plan. On the other hand, Yugoslavia depicted that the Soviet Union was seeking the Socialist Imperialism in the course of mutual economic negotiations. A few years after the expulsion, Yugoslavia began considering alternatives to the Soviet command-type economic system. Slowly experimenting with and implementing a number of reforms, the Yugoslavs moved to a decentralized form of market socialism or self-management socialism. A unique feature of Yugoslavia's foreign policy was Tito's policy of non-alignment. The policy of non-alignment has been seen as proof of Yugoslavia's aspirations to global political status through its venturing into Self-management Socialism as an alternative ideology.

웅천천의 대형 저서 무척추동물의 분포와 다양성에 관하여

金鍾煥,趙京和,鄭寓碩 충남대학교 기초과학연구소 1996 忠南科學硏究誌 Vol.23 No.2

To investigate the distribution pattern of the benthic macroinvertebrates in Ungchon stream, this study was carried out at the six selected stations from August to October, 1994. The relationship of macrobenthos to environmental factors was also discussed and the results are summarized as follows: 1. The macrobenthos collected in this study was classified into 4 phyla, 6 classes, 15 orders, 25 families and 38 species, in which auquatic insect larvae were 26 species (68.4%), molluscs 8 species (21.1%), annelids 3 species (7.9%), and plathyhelminthes 1 species (2.6%). 2. It seemes to be few differences in species composition of the macrobenthos with monthly fluctuation or the stations. At station 3, more number of species(20 sp.) were collected than other stations, however less individuals were observed, especially the August, insect larvae would have collected. 3. Based on dominant indices, richness index and evenness index, Semisulcospira libertina and Ecdyonurus yosidae predominated at all stations, while Corbicula papyracea shows at the 3 station. 4. The relationship between collected species and water quality, Limnodrius gotoi which the lower 4th rank species occurred at 1, 2 stations. Hirudo nipponia, Caenis Kua, Chironomus sp.(white), Cloeon dipterum, Cercion calamorim, Orthetrum albitylum speciosum which the 3rd rank species, occurred at the same stations. Phagocata vivida which the 1st rank species were collected at 5 station. The evaluation between evenness and richness indices indicated some relationships, particularly the highest richness and evenness indices showed at station 3. 5. Considering the macrobenthos with the stream structure, Pleuroceridae and Heptageniidae larva predominated in the upper and middle stream at 4, 5, 6 were the stream surface was covered with medium sand. Corbicula papyracea species occurred at 1, 2 stations where the down stream surface was covered with fine sand and clay.