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8,281 results on '"Liu, Bao"'

1. Dynamic Multi-Objective Lion Swarm Optimization with Multi-strategy Fusion: An application in 6R robot trajectory planning

Author

Liu, Bao, Liu, Tianbao, Hu, Zhongshuo, Ye, Fei, and Gao, Lei

Subjects
Computer Science - Robotics, Computer Science - Neural and Evolutionary Computing
Abstract

The advancement of industrialization has spurred the development of innovative swarm intelligence algorithms, with Lion Swarm Optimization (LSO) notable for its robustness, parallelism, simplicity, and efficiency. While LSO excels in single-objective optimization, its multi-objective variants face challenges such as poor initialization, local optima entrapment, and so on. This study proposes Dynamic Multi-Objective Lion Swarm Optimization with Multi-strategy Fusion (MF-DMOLSO) to address these limitations. MF-DMOLSO comprises three key components: initialization, swarm position update, and external archive update. The initialization unit employs chaotic mapping for uniform population distribution. The position update unit enhances behavior patterns and step size formulas for cub lions, incorporating crowding degree sorting, Pareto non-dominated sorting, and Levy flight to improve convergence speed and global search capabilities. Reference points guide convergence in higher-dimensional spaces, maintaining population diversity. An adaptive cold-hot start strategy generates a population responsive to environmental changes. The external archive update unit re-evaluates solutions based on non-domination and diversity to form the new population. Evaluations on benchmark functions showed MF-DMOLSO surpassed multi-objective particle swarm optimization, non-dominated sorting genetic algorithm II, and multi-objective lion swarm optimization, exceeding 90% accuracy for two-objective and 97% for three-objective problems. Compared to non-dominated sorting genetic algorithm III, MF-DMOLSO showed a 60% improvement. Applied to 6R robot trajectory planning, MF-DMOLSO optimized running time and maximum acceleration to 8.3s and 0.3pi rad/s^2, achieving a set coverage rate of 70.97% compared to 2% by multi-objective particle swarm optimization, thus improving efficiency and reducing mechanical dither.

Published
2024

2. Observation of discrete charge states of a coherent two-level system in a superconducting qubit

Author

Liu, Bao-Jie, Wang, Ying-Ying, Sheffer, Tal, and Wang, Chen

Subjects
Quantum Physics
Abstract

We report observations of discrete charge states of a coherent dielectric two-level system (TLS) that is strongly coupled to an offset-charge-sensitive superconducting transmon qubit. We measure an offset charge of 0.072$e$ associated with the two TLS eigenstates, which have a transition frequency of 2.9 GHz and a relaxation time exceeding 3 ms. Combining measurements in the strong dispersive and resonant regime, we quantify both transverse and longitudinal couplings of the TLS-qubit interaction. We further perform joint tracking of TLS transitions and quasiparticle tunneling dynamics but find no intrinsic correlations. This study demonstrates microwave-frequency TLS as a source of low-frequency charge noise., Comment: 5 pages, 5 figures + 10 pages, 8 figures, 2 tables

Published
2024

16. Robust Fuzzy Control for Intelligent Pneumatic Vibration Isolation

Author

Liu, Xiaoxia, Xu, Shaofeng, Liu, Bao, Wang, Jili, Wang, Yixuan, Sun, Zhibo, Shi, Yan, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Kahraman, Cengiz, editor, Cevik Onar, Sezi, editor, Cebi, Selcuk, editor, Oztaysi, Basar, editor, Tolga, A. Cagrı, editor, and Ucal Sari, Irem, editor

Published
2024
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17. Optimization Design and Analysis of Rear Protection Structure of Commercial Vehicles

Author

Wang, Jiyao, Liu, Bao, China Society of Automotive Engineers, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, and Tan, Kay Chen, Series Editor

Published
2024
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39. Preventing Hospital Acquired Infection of Special Host in the Department of Critical Care Medicine--Organ Transplant Patients

Author

LI Tao, YANG Tongnan, LIU Bao, GAN Kang, LIU Ling, and DUAN Jun

Subjects
critical care medicine, organ transplant, hospital acquired infection, prevention, Medicine
Abstract

With the popularization of transplantation technology, an increasing number of end-stage organ failure patients are undergoing transplantation surgery, and most of these patients need further monitoring and treatment in the department of critical care medicine. Due to immune suppression in transplant patients, the risk of hospital acquired infection is significantly increased. Therefore, for these patients, it is necessary to implement more stringent bundled management measures for the prevention of ventilator-associated pneumonia, catheter-related bloodstream infections, catheter-related urinary tract infections, and surgical site infections. At the same time, stricter institutional and personnel management is needed. This article, taking into account the guideline recommendations and the experience of our center, focuses on the prevention of hospital acquired infection in organ transplant patients, in order to provide reference for clinical practice of critical care medicine.

Published
2024
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49. Decoherence-Suppressed Non-adiabatic Holonomic Quantum Computation

Author

Liu, Bao-Jie, Yan, Lei-Lei, Zhang, Yuan, Yung, Man-Hong, Liang, Erjun, Su, Shi-Lei, and Shan, Chong-Xin

Subjects
Quantum Physics
Abstract

Nonadiabatic holonomic quantum computation~(NHQC) provides an essential way to construct robust and high-fidelity quantum gates due to its geometric features. However, NHQC is more sensitive to the decay and dephasing errors than conventional dynamical gate since it requires an ancillary intermediate state. Here, we utilize the Hamiltonian reverse engineering technique to study the influence of the intermediate state-decoherence on the NHQC gate fidelity, and propose the novel schemes to construct the arbitrary single-qubit holonomic gate and nontrivial two-qubit holonomic gate with high fidelity and robustness to the decoherence. Although the proposed method is generic and can be applied to many experimental platforms, such as superconducting qubits, trapped ions, quantum dots, here we take nitrogen-vacancy (NV) center as an example to show that the gate fidelity can be significantly enhanced from 89\% to 99.6\% in contrast to the recent experimental NHQC schemes [Phys. Rev. Lett. 119, 140503 (2017); Nat. Photonics 11, 309 (2017); Opt. Lett. 43, 2380 (2018)], and the robustness against the decoherence can also be significantly improved. All in all, our scheme provides a promising way for fault-tolerant geometric quantum computation., Comment: 6 pages, 3 figures

Published
2022
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