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164 results on '"Zhou, Ziye"'

2. A Survey of Privacy Preserving Subgraph Matching Methods

Author

Cheng, Xingjiang, Zhang, Fuxing, Peng, Yun, Wang, Xianmin, Huang, Teng, Zhou, Ziye, Wong, Duncan S., Dong, Changyu, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Vaidya, Jaideep, editor, Gabbouj, Moncef, editor, and Li, Jin, editor

Published
2024
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4. Art Success: Necessarily Against Ethics?

Author

Zhou, Ziye, 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, Marino, Elisabetta, editor, Wang, Yixiang, editor, Majoul, Bootheina, editor, and Lee, Hsuan, editor

Published
2023
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9. Measure Contribution of Participants in Federated Learning

Author

Wang, Guan, Dang, Charlie Xiaoqian, and Zhou, Ziye

Subjects
Computer Science - Machine Learning, Statistics - Machine Learning
Abstract

Federated Machine Learning (FML) creates an ecosystem for multiple parties to collaborate on building models while protecting data privacy for the participants. A measure of the contribution for each party in FML enables fair credits allocation. In this paper we develop simple but powerful techniques to fairly calculate the contributions of multiple parties in FML, in the context of both horizontal FML and vertical FML. For Horizontal FML we use deletion method to calculate the grouped instance influence. For Vertical FML we use Shapley Values to calculate the grouped feature importance. Our methods open the door for research in model contribution and credit allocation in the context of federated machine learning., Comment: arXiv admin note: text overlap with arXiv:1905.04519

Published
2019

17. Potential interactions between triazole antifungal agents and lorlatinib based on ultra-performance liquid chromatography-tandem mass spectrometry in rat plasma

Author

Ye, Zhongjiang, primary, Wang, Chenxiang, additional, Li, Rongqi, additional, Chen, Chuang, additional, Yang, Jianhui, additional, Chen, Yizhang, additional, Fu, Jing, additional, Zhou, Tao, additional, Jin, Mi, additional, Huang, Aifang, additional, Zhang, Xiuhua, additional, and Zhou, Ziye, additional

Published
2023
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19. Potential interactions between triazole antifungal agents and lorlatinib based on ultra-performance liquid chromatography-tandem mass spectrometry in rat plasma.

Author

Ye, Zhongjiang, Wang, Chenxiang, Li, Rongqi, Chen, Chuang, Yang, Jianhui, Chen, Yizhang, Fu, Jing, Zhou, Tao, Jin, Mi, Huang, Aifang, Zhang, Xiuhua, and Zhou, Ziye

Subjects
LIQUID chromatography-mass spectrometry, INDUCTIVELY coupled plasma mass spectrometry, ITRACONAZOLE, ANTIFUNGAL agents, TRIAZOLES, SPRAGUE Dawley rats, VORICONAZOLE, KETOCONAZOLE
Abstract

Aim: Our study is to investigate the effects of triazole antifungal drugs on the pharmacokinetics of lorlatinib in rats. Methods: The samples were precipitated with methanol. Chromatographic separation was performed on a ultra-performance liquid chromatography (UPLC) system using a BEH C18 column. The mobile phase consisted of 0.1% formic acid water and methanol. Lorlatinib and crizotinib (internal standard) were detected in multiple reaction monitoring mode. The fragment ions were 407.3–228.07 for lorlatinib and m/z 450.3–260.0 for crizotinib. Lorlatinib and different triazole antifungal drugs were given to Sprague Dawley rats by gavage, and blood was collected from the tail vein at a certain time point. The validated UPLC–MS/MS method was applied to a drug interaction study of ketoconazole, voriconazole, itraconazole, and posaconazole with lorlatinib in rats. Results: Ketoconazole and voriconazole significantly inhibited lorlatinib metabolism. When administration with ketoconazole and voriconazole, the area under the curve from time zero to infinity of lorlatinib increased by 49.0% and 104.3%, respectively; the clearance decreased by 40.0% and 40.0%, respectively. While itraconazole and posaconazole did not affect lorlatinib pharmacokinetics. Conclusion: The UPLC-MS/MS-based assay is helpful to further understand the pharmacokinetics of lorlatinib in rats, and confirmed the findings that the combination of lorlatinib with CYP3A inhibitors should be avoided as predicted by our pre-clinical studies. [ABSTRACT FROM AUTHOR]

Published
2024
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25. A Circular Formation Method for Biomimetic Robotic Fish Inspired by Fish Milling.

Author

Zhou, Ziye, Liu, Jincun, Kong, Shihan, and Yu, Junzhi

Subjects
*CIRCULAR motion, *ROBOTICS, *PHENOMENOLOGICAL biology, *BIOMIMETIC materials, *MECHANICAL alloying
Abstract

Circular motion phenomena, akin to fish milling, are prevalent within the animal kingdom. This paper delineates two fundamental mechanisms underlying such occurrences: forward following and circular topological communication. Leveraging these pivotal concepts, we present a multi-agent formation circular model based on a second-order integrator. This model engenders the attainment of homogeneous intelligence convergence along the circumferential trajectory. The convergence characteristics are intricately linked to the number of agents and the model parameters. Consequently, we propose positive and negative solutions for ascertaining the convergent circle property and model parameters. Furthermore, by integrating our proposed formation control methodology with a robotic fish dynamics model, we have successfully implemented simulations and experiments, demonstrating the circular formation of multiple biomimetic robotic fish. This study provides a mathematical explication for the circular motion observed in animal groups and introduces a novel approach to achieving circular formation in multiple robots inspired by biological phenomena. [ABSTRACT FROM AUTHOR]

Published
2023
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32. Primary culture of chondrocytes after collagenase IA or II treatment of articular cartilage from elderly patients undergoing arthroplasty

Author

Haiyan Song, Liuliu Xiong, Zhou Ziye, Quanming Wang, Lei Ding, Minchen Wu, and Cui Meng

Subjects
0301 basic medicine, medicine.medical_specialty, Primary culture, Chemistry, medicine.medical_treatment, Geography, Planning and Development, Articular cartilage, Management, Monitoring, Policy and Law, Arthroplasty, Surgery, 03 medical and health sciences, 030104 developmental biology, 0302 clinical medicine, 030220 oncology & carcinogenesis, Collagenase, medicine, medicine.drug
Abstract

Background Joint replacement surgery provides articular cartilage samples for chondrocyte isolation. To our knowledge, the effect of the collagenase type on releasing of chondrocytes from the extracellular matrix of cartilage is not reported. Objectives To determine whether cartilage digested with collagenase IA yielded more chondrocytes than that digested with collagenase II and determine whether chondrocytes isolated with collagenase IA could be cultured in vitro. Methods Cartilage slices collected from 18 elderly patients who received joint replacement surgery (16 hips, 2 knees) were digested sequentially with 0.4% pronase E and 0.02% collagenase IA, or with 0.15% collagenase II alone, or sequentially with 0.4% pronase E and 0.02% collagenase II. We compared cell yield from each method. Cell viability by the most effective method was calculated and plotted. The morphology of cultured monolayer chondrocytes was recorded with a light microscope. Results Sequential digestion with pronase E and collagenase IA yielded 2566 ± 873 chondrocytes per mg wet cartilage, which was more effective than the other isolation methods (P = 0.018). The average chondrocyte viability could reach 84% ± 8% (n = 11). Light microscopic images showed typical chondrocyte morphology in monolayer cultures. Conclusion Sequential digestion of human articular cartilage with pronase E and collagenase IA was more effective than collagenase II alone or collagenase II combined with pronase E for releasing chondrocytes from extracellular matrix of cartilage. Chondrocytes isolated with this method could be maintained in monolayer cultures for at least 2 passages with unaltered morphology.

Published
2021

33. Design and test of co-phase correction device of segmented-mirrors

Author

Fan Xinlong, Chen Mo, Feng Zhongyi, Zhou Ziye, Li Yang, Xian Hao, Wang Shengqian, and Xian Wenting

Subjects
Materials science, Optics, Phase correction, business.industry, business, Atomic and Molecular Physics, and Optics, Test (assessment)
Published
2021

41. Single preloaded piezoelectric-ceramic-stack-actuator-based fast steering mirror with an ultrahigh natural frequency

Author

Linhai Huang, Zhongyi Feng, Hao Xian, and Zhou Ziye

Subjects
Materials science, business.industry, Acoustics, Optical communication, Stiffness, Natural frequency, 01 natural sciences, Piezoelectricity, Atomic and Molecular Physics, and Optics, 010309 optics, Image stabilization, Optics, Stack (abstract data type), 0103 physical sciences, medicine, Electrical and Electronic Engineering, medicine.symptom, business, Actuator, Adaptive optics, Engineering (miscellaneous)
Abstract

To meet the requirements of the adaptive optics systems with high bandwidths and large excursion angles, we propose a fast steering mirror (FSM) with an ultrahigh natural frequency and a large angular range. The proposed FSM is driven by a preloaded piezoelectric ceramic stack actuator (PCSA), which has a higher shear stress limit in the working direction. We describe the structure of the preloading device and analyze the stiffness improvement of the preloaded PCSA. Then we introduce the structure of the proposed FSM and perform theoretical analysis based on the established static model and dynamical model. We also build an experimental setup of the proposed FSM. The experimental results show that the angular range of the proposed FSM is up to 8.4 mrad, and its first natural frequency is 6660 Hz, which surpass the performances of current FSMs.

Published
2020

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