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이예준(Yejun Lee),조정찬(Jungchan Cho) 대한전자공학회 2023 대한전자공학회 학술대회 Vol.2023 No.11
Recently, research using text information has attracted attention in computer vision, but PAR(Pedestrian Attribute Recognition) is only using simple text extraction methods. However, language models have the flexibility to utilize a variety of prompts, so finding good prompts plays an important role in improving the performance of the PAR model. In this paper, we propose a PAR training method using CLIP and multiple template prompts. Experimental results show that the proposed method outperformed a comparison method. This demonstrates that it is important to use textual information extracted through the appropriate prompts to improve visual model performance.
습열 노화 및 산소 유량이 마그네슘 파우더의 열 화학적 성질에 미치는 영향 조사
이예준(Yejun Lee),오주영(Juyoung Oh),여재익(Ja-ick Yoh) 한국추진공학회 2023 한국추진공학회지 Vol.27 No.6
Magnesium is widely used in various fields due to its high energy density and low price. However, the degradation of thermochemical performance of magnesium subjected to hygrothermal aging has not yet been identified. Hygrothermal aging affects magnesium to form an oxide film consisting of magnesium oxide that retards the magnesium oxidation and magnesium hydroxide that accelerates it. The magnesium oxidation consists of surface oxidation and core oxidation. In long-term aging, the oxide film surrounds all magnesium surface, which results in the skip of surface oxidation. Because of this, the thermal behavior of long-term aged samples had a similar form to core oxidation, and form a high activation energy at a low reaction rate. In addition, as the oxygen flow rate increases, the magnesium-oxygen reaction changes from fuel-rich condition to fuel-lean condition. These changes increased the amount of magnesium that reacted, resulting in higher activation energy. Thus, this study investigated changes in the thermochemical properties of magnesium subjected to hygrothermal aging and identified the phenomenon that occurs when aging is prolonged.
습열 노화 및 산소 유량이 마그네슘 파우더의 열 화학적 성질에 미치는 영향 파악
이예준(Yejun Lee),오주영(Juyoung Oh),여재익(Ja-ick Yoh) 한국추진공학회 2023 한국추진공학회 학술대회논문집 Vol.2023 No.5
Magnesium is widely used in various fields due to its high energy density and low price. However, the degradation of thermochemical performance of magnesium subjected to hygrothermal aging has not yet been identified. Hygrothermal aging affects magnesium to form an oxide film consisting of magnesium oxide that retards the magnesium oxidation and magnesium hydroxide that accelerates it. The magnesium oxidation consists of surface oxidation and core oxidation. In long-term aging, the oxide film surrounds all magnesium surface, which results in the skip of surface oxidation. Because of this, the thermal behavior of long-term aged samples had a similar form to core oxidation, and forme a high activation energy at a low reaction rate. In addition, as the oxygen flow rate increases, the magnesium-oxygen reaction changes from fuel-rich condition to fuel-lean condition. These changes increased the amount of magnesium that reacted, resulting in higher activation energy. Thus, this study investigated changes in the thermochemical properties of magnesium subjected to hygrothermal aging and identified the phenomenon that occurs when aging is prolonged.