- 作 者: "zi cai"
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New family of quasi-Hermitian Hamiltonians and its application in coupled predator-prey circlesarXiv - PHYS - Quantum Physics Pub Date : 2022-07-10 ,DOI:arxiv-2207.04473Tengzhou Zhang, Zi CaiHerein, we propose a family of non-Hermitian Hamiltonians with real spectra other than the space-time reflection (PT) symmetric class, and discuss its application in the predator-prey ecological processes described by a generalized Lotka-Volterra equation. In the phase space, such a nonlinear equation could support both chaotic and localized dynamics separated by a dynamical critical point, which can ...
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New family of quasi-Hermitian Hamiltonians and its application in coupled predator-prey circlesarXiv - PHYS - Statistical Mechanics Pub Date : 2022-07-10 ,DOI:arxiv-2207.04473Tengzhou Zhang, Zi CaiHerein, we propose a family of non-Hermitian Hamiltonians with real spectra other than the space-time reflection (PT) symmetric class, and discuss its application in the predator-prey ecological processes described by a generalized Lotka-Volterra equation. In the phase space, such a nonlinear equation could support both chaotic and localized dynamics separated by a dynamical critical point, which can ...
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Nonergodic delocalized paramagnetic states in quantum neural networksarXiv - PHYS - Disordered Systems and Neural Networks Pub Date : 2022-05-02 ,DOI:arxiv-2205.00623Shuohang Wu, Zi CaiTypically, it is assumed that a high-energy eigenstate of a generic interacting quantum many-body Hamiltonian is thermal and obeys the eigenstate thermalization hypothesis. In this work, we show that the paramagnetic phase of a quantum Hopfield neural network model is delocalized but nonergodic. The combination of permutational symmetry and frustration in this model organize its high-energy eigenstates ...
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Multiresponsive Ti3C2Tx MXene-Based Actuators Enabled by Dual-Mechanism Synergism for Soft RoboticsACS Applied Materials & Interfaces (IF 10.383) Pub Date : 2022-04-29 ,DOI:10.1021/acsami.2c03157Zhen-Hua Tang, Wei-Bin Zhu, Yu-Qin Mao, Zi-Cai Zhu, Yuan-Qing Li, Pei Huang, Shao-Yun FuMultiresponsive and high-performance flexible actuators with a simple configuration, high mechanical strength, and low-power consumption are highly desirable for soft robotics. Here, a novel mechanically robust and multiresponsive Ti3C2Tx MXene-based actuator with high actuation performance via dual-mechanism synergistic effect driven by the hygroexpansion of bacterial cellulose (BC) layer and the ...
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Spurious eigenvalue-free algorithms of the method of fundamental solutions for solving the Helmholtz equation in bounded multiply connected domainsNumerical Algorithms (IF 2.37) Pub Date : 2022-04-23 ,DOI:10.1007/s11075-022-01286-yLi-Ping Zhang, Zi-Cai Li, Yimin Wei, Hung-Tsai HuangFor the Helmholtz equation Δu + k2u = 0 in 2D domain S, there exists a unique solution if k2 is not exactly equal to an eigenvalue λ of the Laplace eigenvalue problem Δu + λu = 0 in S. One important criterion for numerical methods is that there must exist no spurious (i.e., superfluous) eigenvalues so that the above unique solution can be obtained correctly. For exterior problems, the method of fundamental ...
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The influence of men on HPV vaccination of their spouse/partner in China.Human Vaccines & Immunotherapeutics (IF 4.526) Pub Date : 2022-04-05 ,DOI:10.1080/21645515.2022.2049132Yulan Lin,Carla Zi Cai,Zhijian Hu,Gregory D Zimet,Haridah Alias,Li Ping Wong
Men involvement in HPV vaccine advocacy is important in a patriarchal society. This study aimed to investigate the influence of men on HPV vaccination of adult women. An online cross-sectional survey was undertaken between June and August 2019. Participants were fathers of children enrolled in schools in Fujian Province. A total of 1953 participants responded to our survey. Just over 60% reported they
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Thermal melting of discrete time crystals: A dynamical phase transition induced by thermal fluctuationsPhysical Review B (IF 3.908) Pub Date : 2022-03-22 ,DOI:10.1103/physrevb.105.l100303Mingxi Yue, Xiaoqin Yang, Zi Cai
The stability of a discrete time crystal against thermal fluctuations has been studied numerically by solving a stochastic Landau-Lifshitz-Gilbert equation of a periodically driven classical system composed of interacting spins, each of which couples to a thermal bath. It is shown that in the thermodynamic limit, even though the long-range temporal crystalline order is stable at low temperature, it
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New locations of source nodes for method of fundamental solutions solving Laplace’s equation; pseudo radial-linesEngineering Analysis With Boundary Elements (IF 3.25) Pub Date : 2022-03-01 ,DOI:10.1016/j.enganabound.2021.12.004Li-Ping Zhang,Zi-Cai Li,Hung-Tsai Huang,Ming-Gong LeeConsider 2D Laplace’s equation in a bounded simply-connected domain S, and solve it by the method of fundamental solutions (MFS). The source nodes must be located outside the domain boundary Γ (= S). How to select better source nodes is essential to the MFS in both theory and computation. In the standard MFS, source nodes are located on a closed contour outside Γ, called pseudo-boundaries. Circular/elliptic ...
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1/3Power-Law Universality Class out of Stochastic Driving in Interacting SystemsPhysical Review Letters (IF 9.185) Pub Date : 2022-02-02 ,DOI:10.1103/physrevlett.128.050601Zi CaiWilczek Quantum Center and Key Laboratory of Artificial Structures and Quantum Control, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China and Shanghai Research Center for Quantum Sciences, Shanghai 201315, China.
In this Letter, we study the mean-field dynamics of a general class of many-body systems with stochastically fluctuating interactions. Our findings reveal a universal algebraic decay of the order parameter m(t)∼t−χ with an exponent χ=13 that is independent of most system details including the strength of the stochastic driving, the energy spectrum of the undriven systems, the initial states, and even
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MAKO robotic assisted total hip replacement (THR) for patients with fused hipsInternational Journal of Medical Robotics and Computer Assisted Surgery (IF 2.483) Pub Date : 2022-01-20 ,DOI:10.1002/rcs.2369Xiang Zhao, Xun-Zi Cai, Wei Wang, Hao-Bo Wu, Li-Dong Wu, Zhao-Ming Ye, Shi-Gui YanPrevious articles about MAKO robotic-assisted total hip replacement (THR) were mainly in patients with comparatively normal anatomy. ...
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Multi-functional osteoclasts in matrix-based tissue engineering bone.Chinese Journal of Traumatology Pub Date : 2021-11-26 ,DOI:10.1016/j.cjtee.2021.11.003Yue-Qi Chen,Wen-Hui Hu,Zi-Cai Dong,Shi-Wu Dong
The repair of bone defects, especially for the large segment of bone defects, has always been an urgent problem in orthopedic clinic and attracted researchers' attention. Nowadays, the application of tissue engineering bone in the repair of bone defects has become the research hotspot. With the rapid development of tissue engineering, the novel and functional scaffold materials for bone repair have
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One-Step Synthesis of Microdome Patterns for Microstructured Pressure Sensors with Ultra-High Sensing PerformanceACS Applied Materials & Interfaces (IF 10.383) Pub Date : 2021-10-01 ,DOI:10.1021/acsami.1c12241Zhen-Hua Tang, Shan-Shan Xue, Yuan-Qing Li, Zi-Cai Zhu, Pei Huang, Shao-Yun FuPressure sensors usually suffer from a trade-off between sensitivity and the linear sensing range, which may be improved by manipulating the geometric microstructure of active sensing materials via the molding strategy, standard photolithography technique, and so on. However, these conventional microengineering techniques require specialized equipment, which are extremely complicated, high-cost, and ...
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Constraint-induced breaking and restoration of ergodicity in spin-1 PXP modelsPhysical Review Research Pub Date : 2021-08-31 ,DOI:10.1103/physrevresearch.3.033201Bhaskar Mukherjee, Zi Cai, W. Vincent Liu
Eigenstate thermalization hypothesis (ETH) has played a pivotal role in understanding ergodicity and its breaking in isolated quantum many-body systems. The recent experiment on 51-atom Rydberg quantum simulator by Bernien et al. [Nature (London) 551, 579 (2017)] and subsequent theoretical analysis have shown that hardcore kinetic constraint can lead to weak ergodicity breaking. In this work, we demonstrate
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[Systematic review and Meta-analysis on efficacy and safety of Gongxuening Capsules in treatment of abnormal vaginal bleeding after medical abortion].Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica Pub Date : 2021-08-01 ,DOI:10.19540/j.cnki.cjcmm.20210201.502Bo-Han Niu,Ming-Yan Zhang,Ting Zhang,Hui-Zi Cai,Kai Li,Hui WangTianjin University of Traditional Chinese Medicine Tianjin 301617, China Evidence-based Medicine Center,Tianjin University of Traditional Chinese Medicine Tianjin 301617, China.To systematically evaluate the efficacy and safety of Gongxuening Capsules in the treatment of abnormal vaginal bleeding after medical abortion. CNKI, Wanfang, SinoMed, VIP, PubMed, Cochrane Library and EMbase databases were retrieved to comprehensively collect the clinical randomized controlled trials(RCTs) of Gongxuening Capsules for treatment of abnormal vaginal bleeding after medical abortion from ...
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[Case control study on T-plate combined with suture anchors for the treatment of Neer Ⅱb clavicle fractures].Zhongguo gu shang = China journal of orthopaedics and traumatology Pub Date : 2021-07-25 ,DOI:10.12200/j.issn.1003-0034.2021.07.018Jin Wang,Zhi-Xu Wang,Zi-Cai Li,Yan-Chuan Pu,Hu-Lin Wang,Sheng-Long Miao,Hu Bi,Dong Wang,Dong-Lin Xu,Zhi-Bin XuDepartment of Orthopaedics, Wuwei People's Hosptial, Wuwei 733000, Gansu, China.OBJECTIVE To compare the clinical efficacy of distal radius T-plate combined with suture anchor and distal clavicle anatomical locking plate combined with suture anchor in the treatment of Neer Ⅱb distal clavicle fracture. METHODS From June 2014 to June 2018, 42 patients with Neer Ⅱb distal clavicle fractures were retrospectively analyzed. According to different surgical methods, they were divided ...
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Psychological and mental health impacts of COVID-19 pandemic on healthcare workers in China: A review.World Journal of Psychiatry (IF 3.5) Pub Date : 2021-07-19 ,DOI:10.5498/wjp.v11.i7.337Carla Zi Cai, Yu-Lan Lin, Zhi-Jian Hu, Li Ping Wong
The coronavirus disease-19 (COVID-19) pandemic has put healthcare workers in an unprecedented situation, increasing their psychological and mental health distress. Much research has focused on the issues surrounding anxiety, depression, and stress among healthcare workers. The consequences of mental health problems on healthcare workers' physical health, health-compromising behaviours, suicide ideation
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Stability analysis of the method of fundamental solutions with smooth closed pseudo-boundaries for Laplace’s equation: better pseudo-boundariesNumerical Algorithms (IF 2.37) Pub Date : 2021-06-22 ,DOI:10.1007/s11075-021-01150-5Li-Ping Zhang, Zi-Cai Li, Ming-Gong Lee, Hung-Tsai HuangConsider Laplace’s equation in a bounded simply-connected domain S, and use the method of fundamental solutions (MFS). The error and stability analysis is made for circular/elliptic pseudo-boundaries in Dou et al. (J. Comp. Appl. Math. 377:112861, 2020), and polynomial convergence rates and exponential growth rates of the condition number (Cond) are obtained. General pseudo-boundaries are suggested ...
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Canagliflozin for prevention of cardiovascular and renal outcomes in type2 diabetes: A systematic review and meta-analysis of randomized controlled trialsFrontiers in Pharmacology (IF 5.988) Pub Date : 2021-06-21 ,DOI:10.3389/fphar.2021.691878Lei Tian, Yu-Zi Cai, Hui-Juan Zheng, Si-Nan Ai, Meng-Qi Zhou, Hui Luo, Jing-Yi Tang, Wei Jing Liu, Yao-Xian WangRenal Research Institution of Beijing University of Chinese Medicine, and Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
Abstract Objective: We aimed to evaluate the efficacy of canagliflozin for the treatment of specific cardiovascular and renal outcomes in Type 2 diabetes mellitus (T2DM) patients by means of a systematic review and meta-analysis. Methods: We performed comprehensive searches of PubMed, the Cochrane Library, and Embase for randomized, placebo-controlled trials of the treatment of T2DM with canagliflozin
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Singularity problems from source functions as source nodes located near boundaries; numerical methods and removal techniquesEngineering Analysis With Boundary Elements (IF 3.25) Pub Date : 2021-06-19 ,DOI:10.1016/j.enganabound.2021.05.016Li-Ping Zhang, Zi-Cai Li, Hung-Tsai Huang, Ming-Gong LeeConsider the Dirichlet problem for Laplace’s/Poisson’s equation in a bounded simply-connected domain S. The source function qln|PQ*¯| is a fundamental solution (FS), and it can be found in many physical problems. The singularity occurs when the boundary value data affected by qln|PQ*¯| as the source node Q* is located near the boundary Γ(=∂S). So far, there is no comprehensive study on this kind of ...
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Symmetry-Protected Topological Edge Modes and Emergent Partial Time-Reversal Symmetry Breaking in Open Quantum Many-Body SystemsPhysical Review Letters (IF 9.185) Pub Date : 2021-06-09 ,DOI:10.1103/physrevlett.126.237201Zijian Wang, Qiaoyi Li, Wei Li, Zi Cai
Symmetry-protected topological edge modes are one of the most remarkable phenomena in topological physics. Here, we formulate and quantitatively examine the effect of a quantum bath on these topological edge modes. Using the density matrix renormalization group method, we study the ground state of a composite system of spin-1 quantum chain, where the system and the bath degrees of freedom are treated
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The prevalence and risk factors of acute kidney injury in patients undergoing hip fracture surgery: a meta-analysisBioengineered (IF 6.832) Pub Date : 2021-05-26 ,DOI:10.1080/21655979.2021.1926200Zi-Cai Li, Yan-Chuan Pu, Jin Wang, Hu-Lin Wang, Yan-Li ZhangDepartment of Orthopaedics, Wuwei People's Hospital, Wuwei, China.
ABSTRACT Acute kidney injury (AKI) was a frequent complication following hip fracture surgery, but recent studies reported inconsistent findings. Our study was aimed at clarifying the prevalence and risk factors of AKI after hip fracture surgery. Pubmed, Embase, and Web of Science were systematically searched from the inception to March 2020 to identify observational studies investigating the prevalence
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Order by disorder in frustration-free systems: Quantum Monte Carlo study of a two-dimensional PXP modelPhysical Review B (IF 3.908) Pub Date : 2021-05-18 ,DOI:10.1103/physrevb.103.l201113Mingxi Yue, Zijian Wang, Bhaskar Mukherjee, Zi Cai
In this study, an order-by-disorder mechanism has been proposed in a two-dimensional PXP model, where the extensive degeneracy of the classical ground-state manifold is due to strict occupation constraints instead of geometrical frustrations. By performing an unbias large-scale quantum Monte Carlo simulation, we find that local quantum fluctuations, which usually work against long-range ordering, lift
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Effect of the COVID-19 Pandemic on Medical Student Career Perceptions: Perspectives from Medical Students in ChinaInternational Journal of Environmental Research and Public Health (IF 4.614) Pub Date : 2021-05-11 ,DOI:10.3390/ijerph18105071Carla Zi Cai, Yulan Lin, Haridah Alias, Zhijian Hu, Li Ping Wong
Our aim was to examine perceived occupational turnover intentions among medical students and the associated factors. A cross-sectional study using a Web-based survey was conducted. A total of 2922 completed responses were received (response rate 55.7%). A total of 58.4% (95% CI 56.6–60.2) reported high turnover intention (score of 7–15). The odds of higher total turnover score among the fifth-year
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[Systematic review of randomized controlled trial of Maxing Shigan Decoction in treatment of community acquired pneumonia].Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica Pub Date : 2021-03-01 ,DOI:10.19540/j.cnki.cjcmm.20200714.501Kai Li,Feng-Wen Yang,Wen-Tai Pang,Hui-Zi Cai,Ming-Yan Zhang,Jun-Hua ZhangEvidence-based Medicine Center,Tianjin University of Traditional Chinese Medicine Tianjin 300193,China.To systemically evaluate the efficacy and safety of Maxing Shigan Decoction in the treatment of community acquired pneumonia(CAP) and provide a reference for the treatment of CAP. Databases of CNKI, Wanfang, VIP, SinoMed, EMbase, Cochrane Library, Web of Science and PubMed were searched(from inception to May 30, 2020) to screen the randomized controlled trials(RCTs) of Maxing Shigan Decoction in treating ...
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Dynamical Transitions and Critical Behavior between Discrete Time Crystal PhasesPhysical Review Letters (IF 9.185) Pub Date : 2021-01-12 ,DOI:10.1103/physrevlett.126.020602Xiaoqin Yang, Zi CaiIn equilibrium physics, spontaneous symmetry breaking and elementary excitation are two concepts closely related with each other: the symmetry and its spontaneous breaking not only control the dynamics and spectrum of elementary excitations, but also determine their underlying structures. In this Letter, based on an exactly solvable model, we propose a phase ramping protocol to study an excitationlike ...
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Comparisons of method of fundamental solutions, method of particular solutions and the MFS-QR; stability analysisEngineering Analysis With Boundary Elements (IF 3.25) Pub Date : 2020-12-10 ,DOI:10.1016/j.enganabound.2020.11.017Li-Ping Zhang, Zi-Cai Li, Hung-Tsai Huang, Ming-Gong LeeThe goals of this paper are twofold: selection of pseudo-boundaries for sources nodes in the method of fundamental solutions (MFS), and comparisons of the MFS, the method of particular solutions (MPS) and the MFS-QR of Antunes. To pursue better pseudo-boundaries, we provide new estimates of the condition number (Cond) by the MFS for arbitrary pseudo-boundaries, and propose a new sensitivity index of ...
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Pattern Formation and Exotic Order in Driven-Dissipative Bose-Hubbard Systems.Physical Review Letters (IF 9.185) Pub Date : 2020-09-09 ,DOI:10.1103/physrevlett.125.115301Zijian Wang,Carlos Navarrete-Benlloch,Zi Cai
Modern experimental platforms such as superconducting circuit arrays call for the exploration of bosonic tight-binding models in unconventional situations with no counterpart in real materials. Here we investigate one such situation in which excitations are driven and damped by pairs, leading to pattern formation and exotic bosonic states emerging from a nonequilibrium quantum many-body system. Focusing
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The Laplace Equation in Three Dimensions by the Method of Fundamental Solutions and the Method of Particular SolutionsApplied Numerical Mathematics (IF 2.994) Pub Date : 2020-08-01 ,DOI:10.1016/j.apnum.2020.03.008Li-Ping Zhang, Zi-Cai Li, Zhen Chen, Hung-Tsai HuangAbstract For Laplace's equation in a bounded simply-connected domain Ω in 3D, the method of fundamental solutions (MFS) is studied in this paper. Although some numerical computations can be found in Chen et al. [10] , the theoretical analysis is much behind (Li [23] only for unit sphere Ω). Our efforts are devoted to exploring a strict error analysis of the MFS. The error bounds are derived, and the ...
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Correction to: miR-205-5p inhibits human endometriosis progression by targeting ANGPT2 in endometrial stromal cells.Stem Cell Research & Therapy (IF 8.079) Pub Date : 2020-05-20 ,DOI:10.1186/s13287-020-01686-8Chen-Fei Zhou,Min-Juan Liu,Wei Wang,Sha Wu,Yu-Xin Huang,Guo-Bin Chen,Li-Min Liu,Dong-Xian Peng,Xue-Feng Wang,Xu-Zi Cai,Xiao-Xuan Li,Wan-Qin Feng,Ying Ma
An amendment to this paper has been published and can be accessed via the original article.
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Imaginary Time Crystal of Thermal Quantum MatterChinese Physics Letters (IF 2.293) Pub Date : 2020-05-01 ,DOI:10.1088/0256-307x/37/5/050503Zi Cai, Yizhen Huang, W. Vincent Liu
Spontaneous symmetry breaking is responsible for rich quantum phenomena from crystalline structures to superconductivity. This concept was boldly extended to the breaking of time translation, opening an avenue to finding exotic phases of quantum matter with collective time modulation and correlation. Here we report that a thermally open quantum ensemble manifests in the dual space of imaginary time
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