• (The) Research of the performance art and culture
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• no.36
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• pp.169-184
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• 2018

This paper reveals the double meaning of the temporal background and spatial background on Shimchungga. Its temporal background is the fictional and romantic time of the story, while the time of the weary lives of ordinary people is realistic and historical in the late Joseon Dynasty. The spatial background has a dual meaning that reminds us of the ancient capital of China and Seoul of the Joseon Dynasty. Namgyeong, a spatial background is fictional and romantic where the daughter of the public, Simcheong, becomes "The mother of all the people." In addition, Namgyeong reminds us of Seoul, the capital of Joseon Dynasty. Shimchungga is based on the customs and manners of the late Joseon Dynasty, and it is embodied by borrowing time and space from China. It is recalled Joseon's as backgrounds of China First of all, Namgyeong on Shimchungga is the ultimate attraction of the free imagination of the ordinary people as well as Shin, Jae-hyo in the late Joseon Dynasty.

• Journal of the Microelectronics and Packaging Society
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• v.31 no.2
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• pp.28-35
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• 2024

Corrosion inside electronic packages significantly impacts the system performance and reliability, necessitating non-destructive diagnostic techniques for system health management. This study aims to present a non-destructive method for assessing corrosion in copper interconnects using the Smith chart, a tool that integrates the magnitude and phase of complex impedance for visualization. For the experiment, specimens simulating copper transmission lines were subjected to temperature and humidity cycles according to the MIL-STD-810G standard to induce corrosion. The corrosion level of the specimen was quantitatively assessed and labeled based on color changes in the R channel. S-parameters and Smith charts with progressing corrosion stages showed unique patterns corresponding to five levels of corrosion, confirming the effectiveness of the Smith chart as a tool for corrosion assessment. Furthermore, by employing data augmentation, 4,444 Smith charts representing various corrosion levels were obtained, and artificial intelligence models were trained to output the corrosion stages of copper interconnects based on the input Smith charts. Among image classification-specialized CNN and Transformer models, the ConvNeXt model achieved the highest diagnostic performance with an accuracy of 89.4%. When diagnosing the corrosion using the Smith chart, it is possible to perform a non-destructive evaluation using electronic signals. Additionally, by integrating and visualizing signal magnitude and phase information, it is expected to perform an intuitive and noise-robust diagnosis.