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1,510 results on '"Zhang, Wenfeng"'

216. Recent progress in hydrogen: From solar to solar cell

Author

Ma, Zhu, primary, Mai, Yaohua, additional, Sun, Kuan, additional, Li, Yanlin, additional, Hou, Shanyue, additional, Liu, Qianyu, additional, Yan, Guangyuan, additional, Li, Xiaoshan, additional, Yu, Tangjie, additional, Du, Zhuowei, additional, Yang, Junbo, additional, Chen, Yi, additional, You, Wei, additional, Yang, Qiang, additional, Xiang, Yan, additional, Tang, Shufang, additional, Yue, Xuelin, additional, Zhang, Meng, additional, Zhang, Wenfeng, additional, Yu, Jian, additional, Huang, Yuelong, additional, Xie, Jiale, additional, and Tang, Chun, additional

Published
2023
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230. TrustDFL: A Blockchain-Based Verifiable and Trusty Decentralized Federated Learning Framework.

Author

Yang, Jinsheng, Zhang, Wenfeng, Guo, Zhaohui, and Gao, Zhen

Subjects
FEDERATED learning, MACHINE learning, MONETARY incentives, BLOCKCHAINS
Abstract

Federated learning is a privacy-preserving machine learning framework where multiple data owners collaborate to train a global model under the orchestra of a central server. The local training results from trainers should be submitted to the central server for model aggregation and update. Busy central server and malicious trainers can introduce the issues of a single point of failure and model poisoning attacks. To address the above issues, the trusty decentralized federated learning (called TrustDFL) framework has been proposed in this paper based on the zero-knowledge proof scheme, blockchain, and smart contracts, which provides enhanced security and higher efficiency for model aggregation. Specifically, Groth 16 is applied to generate the proof for the local model training, including the forward and backward propagation processes. The proofs are attached as the payloads to the transactions, which are broadcast into the blockchain network and executed by the miners. With the support of smart contracts, the contributions of the trainers could be verified automatically under the economic incentive, where the blockchain records all exchanged data as the trust anchor in multi-party scenarios. In addition, IPFS (InterPlanetary File System) is introduced to alleviate the storage and communication overhead brought by local and global models. The theoretical analysis and estimation results show that the TrustDFL efficiently avoids model poisoning attacks without leaking the local secrets, ensuring the global model's accuracy to be trained. [ABSTRACT FROM AUTHOR]

Published
2024
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231. Morphological risk of acute type A aortic dissection in the mildly to moderately dilated aorta.

Author

Sun, Lianjie, Li, Haoyou, Feng, Xiangzhen, Li, Xiao, Wang, Guoqing, Sun, Jianchao, Zhang, Xiaoming, Zhang, Wenfeng, Wang, Jianxun, Niu, Zhaozhuo, and Liu, Gaoli

Subjects
AORTIC dissection, AORTA, REGRESSION analysis, DIAGNOSTIC imaging
Abstract

Open in new tab Download slide OBJECTIVES This study aimed to analyse and determine the role of aortic length and curvature in the pathogenesis of acute type A aortic dissection (ATAAD) with ascending aortic diameters (AADs) <5 cm. METHODS We reviewed the clinical and imaging data of patients with ATAAD (n  = 201) and ascending aortic dilation (n  = 83). Thoracic aortic bending index (TABI) was used to quantify aortic curvature and analyse its role in ATAAD below the diameter risk threshold. RESULTS The AAD was <5.0 and <4.0 cm in 78% and 37% of patients with ATAAD, respectively. The median ascending aortic length (AAL) was 104.6 mm (Q1–Q3, 96.5–113.6 mm), and in 62.7% of patients, it was <11 cm. The median TABI was 14.99 mm/cm (Q1–Q3, 14.18–15.86 mm/cm). Patients with ATAAD and those with aortic dilation were matched for AAD, age, sex, height and other clinical factors. After matched, the dissection group had higher AALs (median, 102.9 mm; Q1–Q3, 96.0–112.5 mm vs median, 88.2 mm; Q1–Q3, 83.7–95.9 mm; P  < 0.001) and TABI (median, 14.84 mm/cm; Q1–Q3, 14.06–15.83 mm/cm vs median, 13.55 mm/cm; Q1–Q3, 13.03–14.28 mm/cm; P  < 0.001). According to the regression analysis, the area under the curve required to distinguish patients with ATAAD from those with aortic dilation was 0.831 in AAL, 0.837 in TABI and 0.907 when AAL was combined with TABI. CONCLUSIONS The patients with ATAAD had higher AAL and TABI than those with aortic dilation. The combination of TABI and AAL might be a potential morphological marker for determining ATAAD risk below the current aortic diameter risk threshold. [ABSTRACT FROM AUTHOR]

Published
2024
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238. Synergistic Passivation via Lewis Coordination and Electrostatic Interaction for Efficient Perovskite Solar Cells

Author

Yan, Guangyuan, primary, Ma, Zhu, additional, Liu, Qianyu, additional, Hou, Shanyue, additional, Li, Yanlin, additional, Liu, Run, additional, Huang, Dejun, additional, Hou, Tian, additional, Qiu, Qingqing, additional, Du, Zhuowei, additional, Yang, Junbo, additional, Chen, Yi, additional, You, Wei, additional, Luo, Hong, additional, Zhao, Jinge, additional, Xiang, Yan, additional, Zhang, Wenfeng, additional, Yu, Jian, additional, Huang, Yuelong, additional, and Mai, Yaohua, additional

Published
2023
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248. The Inactivated ISKNV-I Vaccine Confers Highly Effective Cross-Protection against Epidemic RSIV-I and RSIV-II from Cultured Spotted Sea Bass Lateolabrax maculatus

Author

Fu, Weixuan, primary, Li, Yong, additional, Fu, Yuting, additional, Zhang, Wenfeng, additional, Luo, Panpan, additional, Sun, Qianqian, additional, Yu, Fangzhao, additional, Weng, Shaoping, additional, Li, Wangdong, additional, He, Jianguo, additional, and Dong, Chuanfu, additional

Published
2023
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