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조종만,배인수,심헌,김진오,Jo, Jong-Man,Bae, In-Su,Shim, Hun,Kim, Jin-O 한국조명전기설비학회 2005 조명·전기설비학회논문지 Vol.19 No.8
본 논문은 분산전원이 연계된 배전계통의 신뢰도를 평가할 수 있는 해석적 기법과 그에 맞는 분산전원의 모델을 제시한다. 분산전원은 송전계통에 연계된 대규모 발전기와는 다른 운영방식을 가지기 때문에 기존의 기법과는 다른 해석기법과 모델을 필요로 한다. 제시되는 신뢰도 해석기법은 Monte-Carlo 시뮬레이션에 비해 간단하면서도 피크부하를 사용하는 해석기법에 비해 정확하기 위해 Load Duration Curve를 사용하였고, 최종적으로는 사례연구를 통해 제시된 기법의 정확성을 입증하였다. Unlike the large sized generations of transmission system, the distributed generations have complexities in analyzing and determining model. This paper resents an analytical method for the reliability evaluation of distribution system, including the distributed generations. The method using Load Duration Curve model is simpler than the Monte-Carlo Simulation and is more accurate than that using peak load model. The modeling of distributed generation to analysis reliability of customers using LDC is proposed in this paper, and is compared with the MCS method as a result of case studies.
CAD/CAM Zirconia All Ceramic Restoration and Red-White Esthetics
조종만,Jo, Jong-Man 대한심미치과학회 2004 Journal of the Korean Academy of Esthetic Dentistr Vol.13 No.1
For the prosthodontic results which are compatible with esthetics to be fulfilled, the first prerequisite would be periodontal intervention and stability, the second one may be functional competency and the ultimate goal should be ascribed to esthetic considerations. Other words, esthetic dentistry is a whole entity which encompasses the biological stability of the periodontium, physical accuracy of the prosthodontic structure and finally, the beauty which can be found in natural dentition. It also implies the harmonized lip line which reveals the well-balanced tooth morphology and health gum profiles (Red-White Esthetics). Largely, there lie some differences in the input system of the 3-dimentional data from the prepared abutments between respective computer-assisted systems available now. But the manufacturing systems (CAM) are very similar between them, to say, comprise numeric control systems with whole 3-dimensional milling units according to the restorations to be made. Now the author is going to present CAD/CAM Zirconia All Ceramic Restoration on the topics for the Red-White Esthetics, periodontal control and maintenance, treatment for the discolored teeth, post & core build-up works for the devitalized teeth, characteristics of the Zirconium oxide All Ceramics, fabrication procedures, clinical considerations and its application to diverse clinical situations.