Yanxiang Zhao

Ohta–Kawasaki Model Reveals Patterns on Multicomponent Vesicles

Wangbo Luo, Zhonghua Qiao, Yanxiang Zhao

Abstract. We develop a novel mechanochemical modeling framework to investigate shape deformation and pattern formation in multicomponent vesicle membranes. In this approach, membrane morphology is described by a diffuse-interface elastic bending model, while the microphase separation of membrane-associated proteins is captured via …

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Nesterov's Accelerated Gradient Flow Method for Block Copolymer Systems

Wangbo Luo, Yanxiang Zhao

ABSTRACT Minimizers of phase‐field models are commonly computed by evolving gradient‐flow dynamics, such as , , or Wasserstein gradient flows, toward equilibrium. However, phase‐field energies often possess complicated energy landscapes, and the corresponding relaxation dynamics may involve long‐time, multi‐stage evolution. In many …

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Double Fourier Sphere Methods With Low Rank Approximation for Block Copolymer Systems on Sphere

Wangbo Luo, Yanxiang Zhao

ABSTRACT We introduce Double Fourier Sphere (DFS) methods for the Ohta–Kawasaki (OK) and Nakazawa–Ohta (NO) models on a spherical domain, examining their coarsening dynamics and equilibrium pattern formations. We employed DFS for spatial discretization and the second‐order Backward Differentiation Formula (BDF2) scheme …

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Debiased Dual-Invariant Defense for Adversarially Robust Person Re-Identification

Yuhang Zhou, Yanxiang Zhao, Zhongyun Hua, Zhaoquan Gu et autres

Person re-identification (ReID) is a fundamental task in many real-world applications such as pedestrian trajectory tracking. However, advanced deep learning-based ReID models are highly susceptible to adversarial attacks, where imperceptible perturbations to pedestrian images can cause entirely incorrect predictions, posing significant security …

The effectiveness of the emergency response training program for biosafety events of nurses' competence in the tertiary general hospital: A quasi-experiment study

Yanyan Zhang, Yanxiang Zhao, Meng Meng, Zhi Hao Chen et autres

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OTMol: Robust Molecular Structure Comparison via Optimal Transport

Yaqi Wu, Yanxiang Zhao, Yingkai Zhang, Zixuan Cang

Root-mean-square deviation (RMSD) is widely used to assess structural similarity in systems ranging from flexible ligand conformers to complex molecular cluster configurations. Despite its wide utility, RMSD calculation is often challenged by inconsistent atom ordering, indistinguishable configurations in molecular clusters, and potential …

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OTMol: Robust Molecular Structure Comparison via Optimal Transport

Yaqi Wu, Yanxiang Zhao, Yingkai Zhang, Zixuan Cang

Root-mean-square deviation (RMSD) is widely used to assess structural similarity in systems ranging from flexible ligand conformers to complex molecular cluster configurations. Despite its wide utility, RMSD calculation is often challenged by inconsistent atom ordering, indistinguishable configurations in molecular clusters, and potential …

Phase-field modeling of Dictyostelium discoideum chemotaxis

Yunsong Zhang, Herbert Levine, Yanxiang Zhao

A phase-field approach is proposed to model the chemotaxis of Dictyostelium discoideum. In this framework, motion is controlled by active forces as determined by the Meinhardt model of chemical dynamics which is used to simulate directional sensing during chemotaxis. Then the movement …

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Integrated green supply chain system development with digital transformation

Min-Ren Yan, Haiyan Yan, Yongrui Chen, Xinyue Yan et autres

Green Supply Chain Management (GSCM) integrated with digital transformation (DT) presents a twin transition opportunity for balancing economic growth and environmental sustainability. This study addresses leveraging digital technologies to reduce carbon emissions while enhancing operational efficiency, reflecting the global emphasis on green …

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Supervised Gromov–Wasserstein Optimal Transport with Metric-Preserving Constraints

Zixuan Cang, Yanxiang Zhao

We introduce the supervised Gromov-Wasserstein (sGW) optimal transport, an extension of Gromov-Wasserstein that incorporates potential infinity entries in the cost tensor. These infinity entries enable sGW to enforce application-induced constraints on preserving pairwise distance to a certain extent. A numerical solver is …

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Synchronized Optimal Transport for Joint Modeling of Dynamics Across Multiple Spaces

Zixuan Cang, Yanxiang Zhao

Optimal transport has been an essential tool for reconstructing dynamics from complex data. With the increasingly available multifaceted data, a system can often be characterized across multiple spaces. Therefore, it is crucial to maintain coherence in the dynamics across these diverse spaces. …

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Asymptotically compatible schemes for nonlocal Ohta–Kawasaki model

Wangbo Luo, Yanxiang Zhao

Abstract We study the asymptotical compatibility of the Fourier spectral method in multidimensional space for the nonlocal Ohta–Kawasaka model, a more generalized version of the model proposed in our previous work (Y. Zhao and W. Luo, Physica D 458 (2024), 133989). By …

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