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김동건,윤순현,Kim, Dong-Keon,Yoon, Soon-Hyun 대한기계학회 2003 大韓機械學會論文集B Vol.27 No.3
Experiments were conducted to show the characteristics of the flow on unventilated parallel plane jets. Measurements of mean velocity components and turbulent intensities were carried out with a particle image velocimetry to investigate the flow field generated by the air issued from two identical plane parallel nozzles and mixed with the ambient air. The measurements range of these experiments were Reynolds number of 5300 based on the nozzle width and the cases of nozzle-to-nozzle distance were four times. six times and eight times the width of the nozzle. Results show that a recirculation zone with a sub-atmospheric static pressure was bounded by the inner shear layers of the individual jets and the nozzles plate. The positions. where maximum value of mean turbulent intensities and mean turbulent kinetic energy show, were at the same position with the merging point. The spread of jets in the merging region increases more rapidly than that of Jets in the converging and the combined region. As nozzle-to-nozzle distances were increased. it was shown that merging and combined lengths were shorter.
김동건(Kim Dong-Keon) 국어국문학회 2009 국어국문학 Vol.- No.151
This paper focuses on aspects, functions and transfigurations of the Sipjangga which is based on 109 different versions of Chunhyangjeon which mentions『collection of different versions of Chunhyangjeon』. Generally, 〈Namwongosa〉 party’s versions have long type. Yet 〈Namwongosa〉 and the Chunhyangjeon which published by Donam have difference that the Sipjangga locates on the stage Chun Hyang raved against Byun magistrate before she had punished. The Gyeongpanbon (published from Seoul and Gyeonggi area) which is similar to 〈Namwongosa〉 doesn’t include the Sipjangga except the 35 collection. In comparison, Wanpanbon (published from Jeonju) party, such as the 26 collection, the 29 collection, the 33 collection and the 84 collection include the Sipjangga while the 29 collection (another name Byeolchunhyangjeon) contracts the Sipjangga so it doesn’t satisfy the aspect. 〈okjunghwa〉 is quite similar to the Wanpanbon party in that it expands 30 long type. But it is unique that includes Daejeontongpyeon after 5 chapter and the articles are very sophisticated, even the contents. Usually, song version articles follow 〈Okjunghwa〉 or Wanpan, but it has very different aspects from the contents and forms. The other versions for example, 〈Chunhyangga〉 which man sing, collected from Sin Jaehyo, the 59 jangbon (collection) collected from Jung Munyeon, 〈Chunhyangjeon〉 the 56 jangbon collected from Sa Jaedong (partly missing), 〈Byeolchunhyangjeon〉 the 70 jangbon collected from Sa Jaedong 〈Chunhyangjeon〉, the 72 jangbon collected from Chungnam University 〈Chunhyangjeon〉, the 94 jangbon collected from Park Sunho 〈Byeolchunhyangjeon〉 form also a different version. The Sipjangga is the essential part of Chun Hyang. The resistance of Chun Hyang are not only the essentiality of love and struggling for freedom but also critical cohesion from the subject which is against to Byun magistrate. Therefore The Sipjangga contains variety of voice and main theme. And it focuses on the narrative function after five chapter causes that contract the story or just pay attention to words playing. On the other hand, even short version it eliminates all. But some other manuscripts show sincere emotion that Chun Hyang’s desperate waiting and desire to Lee Mongryong. In brief, the Sipjangga is very important part of Chunhyangga which shows coherence main subject. And also it has variety aspects. However it doesn't exist inherently, it extends its importance during transmission and transition.
생성모델로 생성한 인공 실험점을 활용한 순차적 샘플링 기법
김동건(Dong-Keon Kim),류동흠(Dong Heum Ryu),이용빈(Yongbin Lee) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11
The existing sequential sampling method has a drawback that convergence is very poor when the number of initial experimental points is small. To handle this issue, we present a method to improve the performance of sequential sampling by increasing the number of initial experimental points using artificial experimental points created by a generative model designed with an artificial neural network. A generative model suitable for tabular data (TVAE) is used for generating the artificial experimental points and Expected Improvement (EI) is applied for additional sampling. Finally, the proposed algorithm is verified by comparing its performance with the existing EI technique.
생성모델로 생성한 인공 실험점을 활용한 순차적 샘플링 기법
김동건(Dong-Keon Kim),류동흠(Dong Heum Ryu),이용빈(Yongbin Lee) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11
The existing sequential sampling method has a drawback that convergence is very poor when the number of initial experimental points is small. To handle this issue, we present a method to improve the performance of sequential sampling by increasing the number of initial experimental points using artificial experimental points created by a generative model designed with an artificial neural network. A generative model suitable for tabular data (TVAE) is used for generating the artificial experimental points and Expected Improvement (EI) is applied for additional sampling. Finally, the proposed algorithm is verified by comparing its performance with the existing EI technique.