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586 results on '"Wang, Zhiheng"'

5. Comparative study on charge radii and their kinks at magic numbers

Author

Naito, Tomoya, Oishi, Tomohiro, Sagawa, Hiroyuki, and Wang, Zhiheng

Subjects
Nuclear Theory, Nuclear Experiment
Abstract

Isotope dependences of charge radii, i.e., isotope shifts, calculated by the Skyrme Hartree-Fock, the relativistic mean-field, and the relativistic Hartree-Fock calculations are compared against the experimental data of magic and semimagic nuclei. It is found that the tensor interaction plays a role in reproducing the ``kink'' behavior, irregularity of isotope shifts at the neutron magic number, in the relativistic Hartree-Fock approach. With several Skyrme models, it is found that the kink behavior can be reproduced with the spin-orbit interaction having nonzero isovector channel. The single-particle orbitals near the Fermi energy are crucial to determine the kink size. The effects of the symmetry energy and the pairing interaction are also discussed in relation to the kink behavior., Comment: 22 pages, 34 figures, 10 tables

Published
2022
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7. Content Popularity Prediction in Fog-RANs: A Clustered Federated Learning Based Approach

Author

Wang, Zhiheng, Jiang, Yanxiang, Zheng, Fu-Chun, Bennis, Mehdi, and You, Xiaohu

Subjects
Computer Science - Machine Learning, Computer Science - Artificial Intelligence, Computer Science - Networking and Internet Architecture
Abstract

In this paper, the content popularity prediction problem in fog radio access networks (F-RANs) is investigated. Based on clustered federated learning, we propose a novel mobility-aware popularity prediction policy, which integrates content popularities in terms of local users and mobile users. For local users, the content popularity is predicted by learning the hidden representations of local users and contents. Initial features of local users and contents are generated by incorporating neighbor information with self information. Then, dual-channel neural network (DCNN) model is introduced to learn the hidden representations by producing deep latent features from initial features. For mobile users, the content popularity is predicted via user preference learning. In order to distinguish regional variations of content popularity, clustered federated learning (CFL) is employed, which enables fog access points (F-APs) with similar regional types to benefit from one another and provides a more specialized DCNN model for each F-AP. Simulation results show that our proposed policy achieves significant performance improvement over the traditional policies., Comment: 6 pages, 3 figures. This paper has been accepted by IEEE ICC 2022

Published
2022

11. ForgeryNet -- Face Forgery Analysis Challenge 2021: Methods and Results

Author

He, Yinan, Sheng, Lu, Shao, Jing, Liu, Ziwei, Zou, Zhaofan, Guo, Zhizhi, Jiang, Shan, Sun, Curitis, Zhang, Guosheng, Wang, Keyao, Yue, Haixiao, Hong, Zhibin, Wang, Wanguo, Li, Zhenyu, Wang, Qi, Wang, Zhenli, Xu, Ronghao, Zhang, Mingwen, Wang, Zhiheng, Huang, Zhenhang, Zhang, Tianming, and Zhao, Ningning

Subjects
Computer Science - Computer Vision and Pattern Recognition
Abstract

The rapid progress of photorealistic synthesis techniques has reached a critical point where the boundary between real and manipulated images starts to blur. Recently, a mega-scale deep face forgery dataset, ForgeryNet which comprised of 2.9 million images and 221,247 videos has been released. It is by far the largest publicly available in terms of data-scale, manipulations (7 image-level approaches, 8 video-level approaches), perturbations (36 independent and more mixed perturbations), and annotations (6.3 million classification labels, 2.9 million manipulated area annotations, and 221,247 temporal forgery segment labels). This paper reports methods and results in the ForgeryNet - Face Forgery Analysis Challenge 2021, which employs the ForgeryNet benchmark. The model evaluation is conducted offline on the private test set. A total of 186 participants registered for the competition, and 11 teams made valid submissions. We will analyze the top-ranked solutions and present some discussion on future work directions., Comment: Technical report. Challenge website: https://competitions.codalab.org/competitions/33386

Published
2021

14. Diversification of flowering plants in space and time

Author

Dimitrov, Dimitar, Xu, Xiaoting, Su, Xiangyan, Shrestha, Nawal, Liu, Yunpeng, Kennedy, Jonathan D., Lyu, Lisha, Nogués-Bravo, David, Rosindell, James, Yang, Yong, Fjeldså, Jon, Liu, Jianquan, Schmid, Bernhard, Fang, Jingyun, Rahbek, Carsten, and Wang, Zhiheng

Published
2023
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15. An updated floristic map of the world

Author

Liu, Yunpeng, Xu, Xiaoting, Dimitrov, Dimitar, Pellissier, Loic, Borregaard, Michael K., Shrestha, Nawal, Su, Xiangyan, Luo, Ao, Zimmermann, Niklaus E., Rahbek, Carsten, and Wang, Zhiheng

Published
2023
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23. Effects of Chinese heart-healthy diet on blood lipids, glucose, and estimated 10-y cardiovascular disease risk among Chinese adults: results on secondary outcomes of a randomized controlled trial

Author

Wu, Yangfeng, Wang, Yanfang, Sun, Jianqin, Zhu, Huilian, Zeng, Guo, Yang, Zhenquan, Chen, Junshi, Lin, Pao-Hwa, Niu, Wenyi, Gao, Pei, Fang, Hai, Ma, Guansheng, Li, Ming, Li, Huijuan, Feng, Lin, Xie, Gaoqiang, Ma, Wenyao, Li, Jiarong, Chen, Xiayan, Zhu, Yidan, Xie, Wuxiang, Zhu, Shulan, Bai, Xue, Gao, Yuqing, Li, Chenglong, Ma, Yanjun, Hu, Yiyu, Miao, Ke, Zhu, Shujing, Zhao, Caiyun, Zhu, Yunqing, Yin, Wenya, Zhang, Yiqi, Cai, Congjie, Pang, Xinxin, Sun, Hong, Zhang, Haiying, Bai, Dan, Fang, Aiping, Huang, Rongzhu, Luo, Yun, Liu, Zhaoyan, Lin, Xinlei, Zhao, Yanfang, Bai, Huijing, Ye, Mengyao, Li, Zhen, Fan, Qing, Tang, Jun, Xiao, Fei, Wang, Jianming, Zhang, Yanguo, Zhang, Guixiang, Chen, Weiping, Zhao, Weigang, Li, Xiang, Tong, Guangsen, Zhang, Kun, Xu, Bin, Zhang, Ting, Wang, Xinchi, Zhu, Yunlong, Peng, Jing, Zhang, Haifeng, Gao, Lu, Rao, Shengqi, Xu, Jianguo, Yang, Jing, Jin, Dong, Pu, Ji, Zhou, Juan, Tao, Yuanmeihui, Jiao, Yifan, Wang, Zhiheng, Xu, Yiying, Li, Yuxin, Qiu, Shi, Li, Qianqian, Yuan, Jihong, Li, Shuyi, Lan, Xi, Chen, Si, Dong, Hongli, and Wang, Zhu

Published
2024
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29. Dissolved Organic Matter Dynamics in the Epipelagic Northwest Pacific Low‐Latitude Western Boundary Current System: Insights From Optical Analyses

Author

Wang, Chao, Li, Yizhen, Li, Yan, Zhou, Hui, Stubbins, Aron, Dahlgren, Randy A, Wang, Zhiheng, and Guo, Weidong

Subjects
Geophysics, Oceanography, Physical Geography and Environmental Geoscience
Abstract

High-resolution horizontal and vertical distribution of dissolved organic carbon (DOC), chromophoric, and fluorescent dissolved organic matter (CDOM and FDOM) were investigated in the western boundary current system of the tropical Northwest Pacific (

Published
2021

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