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4. Review helps learn better: Temporal Supervised Knowledge Distillation

Author

Wang, Dongwei, Han, Zhi, Wang, Yanmei, Chen, Xiai, Liu, Baichen, and Tang, Yandong

Subjects
Computer Science - Computer Vision and Pattern Recognition, Computer Science - Artificial Intelligence
Abstract

Reviewing plays an important role when learning knowledge. The knowledge acquisition at a certain time point may be strongly inspired with the help of previous experience. Thus the knowledge growing procedure should show strong relationship along the temporal dimension. In our research, we find that during the network training, the evolution of feature map follows temporal sequence property. A proper temporal supervision may further improve the network training performance. Inspired by this observation, we propose Temporal Supervised Knowledge Distillation (TSKD). Specifically, we extract the spatiotemporal features in the different training phases of student by convolutional Long Short-term memory network (Conv-LSTM). Then, we train the student net through a dynamic target, rather than static teacher network features. This process realizes the refinement of old knowledge in student network, and utilizes it to assist current learning. Extensive experiments verify the effectiveness and advantages of our method over existing knowledge distillation methods, including various network architectures and different tasks (image classification and object detection) ., Comment: Under review in AAAI 2024

Published
2023

13. Reform and Practice of Teaching Mode in Transportation Engineering - Taking the Integration of Passenger Travel as an Example

Author

Feng, Pengfei, Mei, Jingxian, Wang, Yanmei, Li, Kan, Editor-in-Chief, Li, Qingyong, Associate Editor, Fournier-Viger, Philippe, Series Editor, Hong, Wei-Chiang, Series Editor, Liang, Xun, Series Editor, Wang, Long, Series Editor, Xu, Xuesong, Series Editor, Kuang, Yunshan, editor, Zhu, Lixin, editor, Zhang, Xiangyang, editor, and Khan, Intakhab Alam, editor

Published
2024
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14. Investigation on the vibrational relaxation and ultrafast electronic dynamics of S1 state in 2,4-difluoroanisole.

Author

Cao, Ling, Wang, Yanmei, Lu, Xin, and Zhang, Song

Subjects
*VIBRATIONAL redistribution (Molecular physics), *TIME-of-flight spectroscopy, *MASS spectrometry, *RYDBERG states, *ENERGY levels (Quantum mechanics)
Abstract

Intramolecular vibrational energy redistribution (IVR) has a profound impact on dynamic processes. We have studied two types of IVR processes, restricted and dissipative, and ultrafast dynamics of the S1 state of 2,4-difluoroanisole using time-resolved photoelectron spectroscopy and time-of-flight mass spectroscopy. The restricted IVR occurs in the intermediate regime of 219 cm−1 vibrational level, and the dissipative IVR occurs in the statistical regime of 1200 cm−1. The lifetimes of IVR processes are measured to be 90 and 11 ps, respectively, depending on the internal energies of the S1 state and differ by a factor of eight. Similar subsequent dynamics were observed at two vibrational levels in the S1 state. The population undergoes IVR following the initial excitation and subsequently leaks into a triplet state, accompanied by intersystem crossing within ∼400 ps followed by a slower nonradiative relaxation of the triplet state on the nanosecond time scale. Furthermore, the values of 3s and 3px Rydberg states of 2,4-difluoroanisole were experimentally determined to be 5.02 and 6.28 eV. [ABSTRACT FROM AUTHOR]

Published
2024
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17. Entrance surface dose of digital radiography adult examinees in a grade A tertiary hospital in Shanghai

Author

WANG Yanmei, YAO Jie, LI Yan, JIANG Song, and BAI Yifei

Subjects
digital radiography, adult examinee, entrance surface dose, effective dose, Medicine
Abstract

ObjectiveTo investigate the entrance surface dose （ESD） of digital radiography （DR）adult examinees in a grade A tertiary hospital in Shanghai， to analyze the dose level of the DR adult examinees， and to provide data for the development of DR typical dose reference.MethodsA DR equipment in the hospital was selected and the irradiation parameters and dose were determined in two randomly selected age groups （15‒39 years and 40‒69 years） of DR adult examinees. The examinations included chest PA， chest LAT， abdominal AP， pelvic AP， lumbar AP， lumbar LAT， thoracic AP， and thoracic LAT. The number of examinees in each exposure position was 20. ESD and effective dose were calculated for each age group and each position.ResultsA total of 320 examinees were investigated. The 75th percentiles of ESD in different exposure positions were as follows： chest PA 0.19 mGy；chest LAT 0.96 mGy；abdominal AP 3.63 mGy；pelvic AP 3.16 mGy；lumbar AP 9.27 mGy；lumbar LAT 18.29 mGy；thoracic AP 6.85 mGy；and thoracic LAT 13.40 mGy.ConclusionsThe differences between the estimated ESD and effective dose were large in different exposure positions、in the same exposure positions、and in the same positions with different exposure types， and there were statistically significant differences in ESD of examinees with different exposure positions. The estimated typical values of different exposure positions were apparently lower than the diagnostic reference level.

Published
2024
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18. Research Progress on Changes in Eating Quality and Chemical Quality Attributes of Chicken during Freezing and Frozen Storage

Author

HUANG Wenquan, KAN Qixin, LIU Guo, WANG Yanmei, YANG Shunde, SONG Mingyue, CAO Yong

Subjects
freezing: chicken, ice crystal, eating quality, chemical quality attributes, Food processing and manufacture, TP368-456
Abstract

As one of the major sources of protein in the human diet, chicken is characterized by high protein and low fat. Fresh chicken is susceptible to spoilage by microorganisms and enzymes during storage. Freezing is an effective way to extend the storage period of chicken, but ice crystals formed during the freezing process can negatively impact the chemical quality attributes of chicken, thereby affecting its eating quality. This article reviews traditional, modern, and emerging chicken freezing techniques, and elucidates the effects of freezing rate, freezing method, freezing temperature, freezing time, and freeze-thaw cycle on the quality of frozen chicken, with a focus on the changes in the eating quality (color, water-holding capacity, tenderness, and flavor) and chemical quality attributes (moisture, proteins, lipids, and pH) of chicken during freezing and frozen storage. It is our hope that this review will provide a theoretical reference for improving the key quality attributes of frozen chicken and extending its storage period.

Published
2024
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47. Research on Teaching Reform of Local Universities Based on Online Education

Author

Wang, Yanmei, Mei, Jingxian, Han, Lingli, Li, Jinyu, Striełkowski, Wadim, Editor-in-Chief, Black, Jessica M., Series Editor, Butterfield, Stephen A., Series Editor, Chang, Chi-Cheng, Series Editor, Cheng, Jiuqing, Series Editor, Dumanig, Francisco Perlas, Series Editor, Al-Mabuk, Radhi, Series Editor, Scheper-Hughes, Nancy, Series Editor, Urban, Mathias, Series Editor, Webb, Stephen, Series Editor, Peng, Chew Fong, editor, Du, Helen S., editor, Yin, Teh Sin, editor, Prabhu, Jose, editor, and Li, Hongbo, editor

Published
2023
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48. Teaching Design of Integrating Ideological and Political Elements into 'Safety System Engineering'

Author

Peng, Fei, Han, Lingli, Wang, Yanmei, Striełkowski, Wadim, Editor-in-Chief, Black, Jessica M., Series Editor, Butterfield, Stephen A., Series Editor, Chang, Chi-Cheng, Series Editor, Cheng, Jiuqing, Series Editor, Dumanig, Francisco Perlas, Series Editor, Al-Mabuk, Radhi, Series Editor, Scheper-Hughes, Nancy, Series Editor, Urban, Mathias, Series Editor, Webb, Stephen, Series Editor, Peng, Chew Fong, editor, Du, Helen S., editor, Yin, Teh Sin, editor, Prabhu, Jose, editor, and Li, Hongbo, editor

Published
2023
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49. Design and Practice of Blended Teaching Mode Based on Rain Classroom in 'Security System Engineering'

Author

Peng, Fei, Han, Lingli, Wang, Yanmei, Striełkowski, Wadim, Editor-in-Chief, Black, Jessica M., Series Editor, Butterfield, Stephen A., Series Editor, Chang, Chi-Cheng, Series Editor, Cheng, Jiuqing, Series Editor, Dumanig, Francisco Perlas, Series Editor, Al-Mabuk, Radhi, Series Editor, Scheper-Hughes, Nancy, Series Editor, Urban, Mathias, Series Editor, Webb, Stephen, Series Editor, Chen, Youbin, editor, Anthony, Marcus T., editor, and Ke, Yan, editor

Published
2023
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50. Exploration on the Reform of Ideological and Political Education in Engineering Mechanics

Author

Wang, Yanmei, Han, Lingli, Mei, Jingxian, Li, Jinyu, Striełkowski, Wadim, Editor-in-Chief, Black, Jessica M., Series Editor, Butterfield, Stephen A., Series Editor, Chang, Chi-Cheng, Series Editor, Cheng, Jiuqing, Series Editor, Dumanig, Francisco Perlas, Series Editor, Al-Mabuk, Radhi, Series Editor, Scheper-Hughes, Nancy, Series Editor, Urban, Mathias, Series Editor, Webb, Stephen, Series Editor, Chen, Youbin, editor, Anthony, Marcus T., editor, and Ke, Yan, editor

Published
2023
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