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XML을 이용한 웹 기반 IETM 시스템의 설계 및 구현
안경희,우종정 誠信女子大學校 2001 硏究論文集 Vol.37 No.-
It is difficult to develop traditional IETM systems because they require presentation systems for both docment authoring and graphic formatting.In case of the commercial product for IETM systems,it is inconvenient and difficult to understand their usages. To dvercome such problems,this paper proposes Web-based IETM systems with the XML techology can represent information of structures and semantics for the documents. In addition,we bulid Active X controls for processing a drawing and expand functions of Web browser,which allows us to easily use the IETM system. We implement an IETM system for the ship and its equipments and show its easy development and its convenient usage.
동국대학경주병원에서 분리된 각종 병원성 세균 및 항생제 감수성 양상
하경임,고은하,전창호,정병욱,안우섭,김우택,배정수,어경윤 동국대학교 경주대학 1993 東國論集 Vol.12 No.-
We investigated characteristics of bacterial infection and antimicrobial suscerptibility patterns of clinical specimens in Dong Guk University Kyong Ju Hospital from october 1991 to december 1992. The types of clinical specimens requested for culture were as follows ; pus(34.2%), urine(29.6%), sputum(25.2%), blood(9.2%), etc. The most frequently isolated organisms were E. coli(17.6%), Pseudomonas(12.7%), S. aureus(12.2%), and CNS(11.2%), orderly. Predominant organisms from pus, urine and sputum were S.aureus, E. coli and Pseudomonas. Blood culture was requested 1,244 samples from 614 patients, 91 pathogeni organisms were isolated(14.8% from patient and 7.3% from requested clinical samples). E. coli was most frequently isolated(29.7%) and Salmonella typhi was noted 8.8% from the requested samples. The patterns of isolated organisms according to departments were as follows ; E.coli and Klebsiella were frequently isolated in internal medicine and general surgery, E.coli and Pseudomas in Neurosurgery, S. aureus and Pseudomonas in orthopedic surgery. In ICU, Pseudomonas was predominatly isolated and the rate of mixed infection was also high(16.4%). Most of gram-negative bacilli revealed relatively high susceptibility to Chlorampenicol, Amikacin, Tobramycin and Carbenicillin, but Acinetobacter were only susceptible to Carbenicillin and Tetrecyclin, and Serratia were to Carbenicillin and Amikacin while Salmonella were susceptible to all tested first drugs. The proportions of multi-drug resistant bacteria were 34.9% of Acinetobacter, 21.1% of Serratia, 20.0% of Pseudomonas and 15.4% of Citrobacter but Aztreonam was highly susceptible(84∼100%) except Acinetobacter. S. aureus and CNS were susceptible to Chlorampenicol, Oxacillin, Cephalothin and Vancomycin, especially, 100% susceptible to Vancomycin. But Methicillin reistant Staphylococcus aureus were very high(49%) inspite of new constructed hospital. Pneumococcus and Streptococcus species were relatively high susceptible to all tested drugs.
오우준(Woo-Jun Oh),김훤모(Hwen-Mo Kim),조대환(Dae-Hwan Cho),안영규(Young-Kyu Ahn),이경우(Gyoung-Woo Lee) 한국마린엔지니어링학회 2009 한국마린엔지니어링학회 학술대회 논문집 Vol.2009 No.-
There are many ships and marine structures and also has many differences on according to the shape and the interval of hulls to the purpose. the multi-submerged body needs appropriate distance between the hulls because of the optimum hull form. thus, through this paper, the flow characteristics behind the multi-submerged body according as the distance ration between the hulls and various angles of attack was conducted.
레저선박의 표면조도 간격변화에 따른 유동해석에 관한 연구
오우준(Woo-Jun Oh),조대환(Dea-Hwan Cho),이동섭(Dong-Sub Lee),손창배(Chang-Bae Shon),이경우(Gyoung-Woo Lee) 한국항해항만학회 2009 한국항해항만학회 학술대회논문집 Vol.2009 No.추계
선박의 표면은 소형선박에서부터 대형까지 매끄럽지 않고 어느 정도의 표면조도(surface roughness)를 가지고 있다. 표면조도는 표면저항과 열전달을 증가시키기 때문에 선박의 설계시 고려해야 될 중요한 설계인자 중 하나이다. 때문에 표면조도에 따른 주위유동에 관한 연구와 조도변화에 따른 유동 및 난류에 대한 연구가 지속적으로 이루어지고 있다. 선박의 표면조도는 선박에서 뿐만 아니라 기계나 항공까지 광범위하게 적용이 가능하며 가용 분야 또한 매우 넓다. 본 연구에서는 레저선박의 표면조도 간격변화에 따른 표면유동에 어떠한 영향을 끼치며 표면조도 영역에 따른 경계층에 대한 실험적 연구를 수행하였다. From large to small vessels of the surface is not smooth. and The surface roughness. Because surface roughness increases the surface resistance and heat transfer, be considered when designing a ship that is an important design factor. Due to surface roughness study on flow around and due to changes in flow and turbulence intensity for the ongoing research is conducted. Roughness of the surface ships from the ship by air as well as machines can be widely applied. In this study, the surface roughness of the leisure marine interval, any change will affect the surface flow, area due to surface roughness for boundary-experimental study was performed.
플랩을 갖는 날개 주위의 유동 특성과 PIV 해석에 관한 연구
이경우(Gyoung-Woo Lee),최희종(Hee-Jong Choi),이승건(Seung-keon Lee) 한국항해항만학회 2005 한국항해항만학회지 Vol.29 No.6
선박의 조종성능은 선체와 프로펠러 그리고 타의 상호작용에 의하여 결정되며 선박의 항해 시 선박의 안전성과 밀접한 관계를 가지고 있다. 그 중에서 선체에 부착된 타의 성능은 선박의 조종성능과 직접적인 관계를 가지고 있으며, 타에 의한 선박의 조종성능을 향상시키기 위하여 특수타를 채택하는 사례가 늘어가고 있는 실정이다. 본 논문에서는 특수타의 일종인 플랩타의 2차원 단면에 대한 연구를 수행하였다. 플랩타의 성능을 예측하기 위하여 주날개의 받음각과 플랩의 각도를 바꾸어 가면서 모형실험을 수행하였으며 모형실험 시 유동장내의 속도분포를 얻기 위하여 PIV 계측기법 중 동일입자 추적법의 하나인 2프레림 입자추적법을 사용하였다. 모형실험은 Re=1.027×10⁴에서 수행하였으며, 계측된 결과들을 서로 비교하였다. Ship maneuverability is mainly determined according to hull-propeller-rudder system of a ship and directly related to the ship safety during the operation in the ocean. Among hull-propeller-rudder system the rudder system had direct concern with the ship maneuverability and a special rudder has been recommended to improve the ship maneuverability. In this paper the study of flapped rudder’s 2-dimensional section was accomplished. Model tests had been carried out with different angles of attack of a main foil and flap’s deflection angles to predict the performance of the flapped rudder and the 2 frame particle tracking method had been used to obtain the velocity distribution in the flow field during model tests. Re=1.027×10⁴ had been used during the whole experiments and measured results had been compared with each other.
이경우(Gyoung-Woo Lee),김옥석(Ok-Sok Gim) 한국항해항만학회 2011 한국항해항만학회지 Vol.35 No.10
트랜섬 선미 형상변화에 따른 후류 유동특성을 알아보기 위해 Re=3.5×103 및 Re=7.0×103에서 수면하부 유동을 계측하였다. 선미 형상변화에 따른 유동장 계측을 위해 2-프레임 그레이레벨 상호상관 PIV기법을 이용하여 분석하였다. 선미형상은 실선조사 결과를 바탕으로 선저와 이루는 각을 각각 45°(모델 A), 90°(모델 B)및 135°(모델 C)를 실험에 적용하였다. 모델의 선미 침수면의 깊이는 자유 수면으로부터 40㎜를 기초하였다. 레이놀즈수가 증가함에 따라, 와의 규모가 증가하고 하류로 길게 형성되는 경향을 나타냈다. An experiment was carried out to figure out the instantaneous flow characteristics in the wake of the transom stern's 2-dimensional section by 2-frame grey level cross correlation PIV method at Re= 3.5×103, Re= 7.0×103. The stern angles of models were learning at 45°(Model "A"), 90°(Model "B") and 135°(Model "C") respectively based on the survey results of real ships. The depth of wetted surface is 40㎜ from free surface. As Reynolds number increases, vortices increase in volume and move their way to the downstream. Flow separation appeared at the end of model's bottom.