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425 results on '"LIU Yu-min"'

2. Domain-Generalized Textured Surface Anomaly Detection

Author

Chen, Shang-Fu, Liu, Yu-Min, Lin, Chia-Ching, Chen, Trista Pei-Chun, and Wang, Yu-Chiang Frank

Subjects
Computer Science - Computer Vision and Pattern Recognition
Abstract

Anomaly detection aims to identify abnormal data that deviates from the normal ones, while typically requiring a sufficient amount of normal data to train the model for performing this task. Despite the success of recent anomaly detection methods, performing anomaly detection in an unseen domain remain a challenging task. In this paper, we address the task of domain-generalized textured surface anomaly detection. By observing normal and abnormal surface data across multiple source domains, our model is expected to be generalized to an unseen textured surface of interest, in which only a small number of normal data can be observed during testing. Although with only image-level labels observed in the training data, our patch-based meta-learning model exhibits promising generalization ability: not only can it generalize to unseen image domains, but it can also localize abnormal regions in the query image. Our experiments verify that our model performs favorably against state-of-the-art anomaly detection and domain generalization approaches in various settings., Comment: Accepted by IEEE International Conference on Multimedia and Expo (ICME) 2022

Published
2022

20. IgT-mediated mucosal immunity and microbiota dynamics in snakehead (Channa argus) post Aeromonas veroniiTH0426 and Aeromonas hydrophilaTPS infection: implications for aquaculture disease management

Author

Liu, Yu-min, Li, Xin-tong, Zhang, Chen-yi, Li, Chun-hua, Wang, Hai-yang, Zhang, Dong-xing, Zhang, Lei, Sun, Wu-wen, Tao, Luo-tao, and Shan, Xiao-feng

Abstract

The aquaculture sector, vital to global food security, grapples with bacterial pathogens compromising fish health and industry sustainability. This investigation probes mucosal immune responses and gut microbiota dynamics in snakehead (Channa argus) post-Aeromonasinfection, a prevalent aquaculture challenge. Employing infection models, we delineated the integral role of immunoglobulin T (IgT) in mucosal immunity and its interaction with gut microbiota. Fish from a local farm, maintained under controlled conditions, were infected with Aeromonas veroniiTH0426 and Aeromonas hydrophilaTPS. Post-infection, daily monitoring and sample collection at specified intervals were conducted for comprehensive analysis. Histopathology, quantitative PCR, immunofluorescence, and microbiota profiling revealed significant immune and microbial changes, particularly at day 7. Intestinal IgT, IgM, and pIgR gene expression surged, indicative of a robust response. Immunofluorescence microscopy confirmed increased IgT+and pIgR+cell infiltration in the epithelium. Post-infection dysbiosis, with altered bacterial composition, was partially offset by elevated IgT levels. These insights underscore IgT’s crucial function in mucosal defense and suggest potential for probiotic and vaccine strategies to enhance aquaculture disease resilience.

Published
2024
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22. Molecular bilayer graphene

Author

Zhao, Xin-Jing, Hou, Hao, Fan, Xue-Ting, Wang, Yu, Liu, Yu-Min, Tang, Chun, Liu, Shun-He, Ding, Peng-Peng, Cheng, Jun, Lin, Dong-Hai, Wang, Cheng, Yang, Ye, and Tan, Yuan-Zhi

Published
2019
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40. Neutron and Photon Dose Rates in a D-T Neutron Generator Facility: MCNP Simulations and Experiments

Author

Li Xiaoyi, Sun Yuan-Ming, Liu Yu-Min, Zhao Long, Xu Xu, Tang Wanyue, Chang Yi, Lu Jingbin, and Liu Jiaxi

Subjects
Materials science, Physics::Instrumentation and Detectors, Epidemiology, Astrophysics::High Energy Astrophysical Phenomena, Health, Toxicology and Mutagenesis, Nuclear Theory, Radiation Dosage, 030218 nuclear medicine & medical imaging, Nuclear physics, 03 medical and health sciences, 0302 clinical medicine, Neutron generator, Radiology, Nuclear Medicine and imaging, Neutron, Neutron activation analysis, Nuclear Experiment, Neutrons, Photons, Equivalent dose, Neutron radiation, Neutron temperature, Gamma Rays, 030220 oncology & carcinogenesis, Electromagnetic shielding, Neutron source, Monte Carlo Method
Abstract

The deuterium-tritium neutron generator is a common neutron source for fast neutron activation analysis. The 14.1 MeV neutrons emitted from a deuterium-tritium neutron generator are difficult to shield due to their strong penetrability and the induced secondary gamma rays in the shield. A rough calculation based on attenuation factors shows that when 14.1 MeV neutrons with a yield of 1 × 10 ns penetrate the designed shielding layers, which consist of a 0.5-m-thick concrete layer and a 0.5-m-thick water layer, the neutron ambient dose equivalent rate is 2.48 μSv h. A geometric model of a neutron shielding room is constructed based on the calculation. Monte Carlo simulations indicate that the highest neutron ambient dose equivalent rate outside the neutron shielding room is 0.73 μSv h, and the neutron ambient dose equivalent rate at the detector position in the shielding room is 2.12 μSv h. The experimental results show that the highest neutron ambient dose equivalent rate outside the neutron shielding room is 1.43 μSv h, and the neutron ambient dose equivalent rate at the detector position inside the shielding corridor is 2.74 μSv h. Comparative investigations show that the experimental results are basically consistent with the results of the Monte Carlo simulations, except for some positions with large proportions of fast neutrons where it is too difficult for the neutron dose equivalent meter to provide reliable values. Moreover, the radiation dose rate outside the designed shielding room is lower than the occupational exposure dose limit, which is in line with the design expectations. Finally, the gamma spectrum at the position of the gamma detectors is measured by a high-purity germanium detector. The analyzed results show that many secondary gamma rays are generated by the interaction of neutrons with the shield materials and detector probe crystals, and some gamma rays are produced from natural background radionuclides such as K, Tl, Bi, Bi, Pb, Pb, and Ac.

Published
2020
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44. Contributors

Author

Abdullahi, Hamisu, Abubakar, Sharafudeen Dahiru, Aliyu, Mansur, Anka, Abubakar Umar, Azizi, Gholamreza, Bagacean, Cristina, Bonavida, Benjamin, Bordron, Anne, Bouallegui, Emna, Brando, Bruno, Cavallo, Federica, Chen, Qing, Chen, Tao-xiang, Cho, William C.S., Clerico, Michele, Dadkhahfar, Sahar, dos Santos, Rafael Pinheiro, Fan, Yuan-teng, Furie, Richard, Gatti, Arianna, Glass, Thomas R., Grier, Madelynn, Gurney, Mark, Ihim, Stella Amarachi, Jin, Yanling, Jin, Ying, Kannan, Lakshmi, Khan, Mohammad Aqueel, Litzow, Mark R., Liu, Yu-min, Maleknia, Shayan, McBride, Helen J., Montoto, Silvia, Morel, Marie, Panwar, Umesh, Peng, Bi-wen, Phillips, Tycel J., Qin, Ran, Ragaini, Simone, Saffarioun, Mohammad, Selvaraj, Chandrabose, Singh, Sanjeev Kumar, Snyder, Matthew Salvatore, Song, Guoqi, Takiar, Radhika, Veloso, Marcelo Antônio Oliveira Santos, Wang, Cheng, Wang, Jing, Xia, Bili, Xu, Jianqing, Yang, Li, and Zian, Zeineb

Published
2024
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