Publications (38)
Velocity-Form Data-Enabled Predictive Control of Soft Robots under Unknown External Payloads
Huanqing Wang, Kaixiang Zhang, Kyungjoon Lee +5
Data-driven control methods such as data-enabled predictive control (DeePC) have shown strong potential in efficient control of soft robots without explicit parametric models. Howe…
Fast Online Adaptive Neural MPC via Meta-Learning
Yu Mei, Xinyu Zhou, Shuyang Yu +2
Data-driven model predictive control (MPC) has demonstrated significant potential for improving robot control performance in the presence of model uncertainties. However, existing…
Lensfree Spectral Light-field Fusion Microscopy for Contrast- and Resolution-enhanced Imaging of Biological Specimens
Farnoud Kazemzadeh, Chao Jin, Sara Molladavoodi +4
A lensfree spectral light-field fusion microscopy (LSLFM) system is presented for enabling contrast- and resolution-enhanced imaging of biological specimens. LSLFM consists of a pu…
MOAT: Evaluating LMMs for Capability Integration and Instruction Grounding
Zhoutong Ye, Mingze Sun, Huan-ang Gao +9
Large multimodal models (LMMs) have demonstrated significant potential as generalists in vision-language (VL) tasks. However, adoption of LMMs in real-world tasks is hindered by th…
AFT: Appearance-Based Feature Tracking for Markerless and Training-Free Shape Reconstruction of Soft Robots
Shangyuan Yuan, Preston Fairchild, Yu Mei +2
Accurate shape reconstruction is essential for precise control and reliable operation of soft robots. Compared to sensor-based approaches, vision-based methods offer advantages in…
Design and Nonlinear Modeling of a Modular Cable Driven Soft Robotic Arm
Xinda Qi, Yu Mei, Dong Chen +2
We propose a novel multi-section cable-driven soft robotic arm inspired by octopus tentacles along with a new modeling approach. Each section of the modular manipulator is made of…
Leaf Water Status Monitoring by Scattering Effects at Terahertz Frequencies
Bin Li, Xiao Zhang, Rong Wang +2
The applications of terahertz (THz) radiation for plant water status monitoring require systematic studies on interaction of THz wave and plants. Here, we present theoretical inves…
Dynamic Modeling and Robust Gait Optimization of a Compliant Worm Robot
Xinyu Zhou, Yu Mei, Faith Thomson +3
Worm-inspired robots provide an effective locomotion strategy for constrained environments by combining cyclic body deformation with alternating anchoring. For compliant robots, ho…
Existence and convergence of the Beris-Edwards system with general Landau-de Gennes energy
Zhewen Feng, Min-Chun Hong, Yu Mei
In this paper, we investigate the Beris-Edwards system for both biaxial and uniaxial -tensors with a general Landau-de Gennes energy density depending on four non-zero elastic c…
Global strong solution of the 3D inhomogeneous liquid crystal flows with density-dependent viscosity and large velocity
Jiaxu Li, Yu Mei, Rong Zhang
This paper concerns the initial boundary value problem of three-dimensional inhomogeneous incompressible liquid crystal flows with density-dependent viscosity. When the viscosity c…
Stability of Large-Amplitude Viscous Shock Under Periodic Perturbation for 1-d Viscoelasticity with Non-Convex Constitutive Relations
Yu Mei, Peng Yuan
This paper investigates the large-time behavior of the viscous shock profile for the one-dimensional system of viscoelasticity, subject to initial perturbations that approach space…
HiSync: Spatio-Temporally Aligning Hand Motion from Wearable IMU and On-Robot Camera for Command Source Identification in Long-Range HRI
Chengwen Zhang, Chun Yu, Borong Zhuang +9
Long-range Human-Robot Interaction (HRI) remains underexplored. Within it, Command Source Identification (CSI) - determining who issued a command - is especially challenging due to…
Properties of Solutions to the Full Fractional Heat Operator Equation
Lu Haipeng, Yu Mei
In this paper, we consider the following indefinite fully fractional heat equation involving the master operator . Under certain assumptions of the indefinite nonlinearity and its…
Global strong solution of the 3D compressible liquid crystal flows with density-dependent viscosity and large velocity
Jiaxu Li, Yu Mei, Rong Zhang
This paper concerns the Cauchy problem of three-dimensional compressible liquid crystal flows with density-dependent viscosity. When the viscosity coefficients …
U-Lens: Supporting User Uncertainty Management in Long-Form LLM Responses
Yu Mei, Qingyue Zhuang, Jie Cai +5
Large language models (LLMs) are increasingly used to generate long-form answers for knowledge-intensive tasks, but users often struggle to decide which parts of a response deserve…
Distributionally robust second-order stochastic dominance constrained optimization with Wasserstein ball
Yu Mei, Jia Liu, Zhiping Chen
We consider a distributionally robust second-order stochastic dominance constrained optimization problem. We require the dominance constraints hold with respect to all probability…
PACEE: Parent-Centered AI Scaffolding for Emotion Education in Early Childhood Conversations
Yu Mei, Xutong Wang, Ziyao Zhang +8
Emotion education is critical for children aged 3 to 6. However, existing technologies largely focus on children's direct interaction with AI, overlooking the central role of paren…
Secrecy Performance of Terahertz Wireless Links in Rain and Snow
Rong Wang, Yu Mei, Xiangzhu Meng +1
Wireless communication technique at terahertz (THz) frequencies is regarded as the most potential candidate for future wireless networks due to its wider frequency bandwidth and hi…
Convergence of the Ginzburg-Landau approximation for the Ericksen-Leslie system
Zhewen Feng, Min-Chun Hong, Yu Mei
We establish the local well-posedness of the general Ericksen-Leslie system in liquid crystals with the initial velocity and director field in . In particular, we…
Vanishing viscosity limits for the free boundary problem of compressible viscoelastic fluids with surface tension
Xumin Gu, Yu Mei
We consider the free boundary problem of compressible isentropic neo-Hookean viscoelastic fluid equations with surface tension. Under the physical kinetic and dynamic conditions pr…
Modeling and Mixed-Integer Nonlinear MPC of Positive-Negative Pressure Pneumatic Systems
Yu Mei, Xinyu Zhou, Xiaobo Tan
Positive-negative pressure regulation is critical to soft robotic actuators, enabling large motion ranges and versatile actuation modes. However, it remains challenging due to comp…
Beyond Objective Equivalence: Constraint Injection for LLM-Based Optimization Modeling on Vehicle Routing Problems
Xizi Luo, Changhong He, Dongdong Geng +2
Large language models (LLMs) increasingly translate natural-language optimization problems into executable solver code. Yet for constraint-dense operations research (OR) problems,…
Planning Skip-Stop Transit Service under Heterogeneous Demands
Yu Mei, Weihua Gu, Michael Cassidy +1
Transit vehicles operating under skip-stop service visit only a subset of the stops residing along a corridor. It is a strategy commonly used to increase vehicle speeds and reduce…
A Link-Based Flow Model with Turn-Level Queue Transmission and Time-Varying Free-Flow Speed for Urban Road Networks
Lei Wei, S. Travis Waller, Yu Mei +3
Macroscopic link-based flow models are efficient for simulating flow propagation in urban road networks. Existing link-based flow models described traffic states of a link with two…
Eavesdropping Risk Evaluation on Terahertz Wireless Channels in Atmospheric Turbulence
Yu Mei, Jianping An, Jianjun Ma +2
Wireless networks operating at terahertz (THz) frequencies have been proposed as a promising candidate to support the ever-increasing capacity demand, which cannot be satisfied wit…
PAPEL: A Collaborative System for Parental Guidance during Preschool Play-Based English Learning
Xutong Wang, Yu Mei, Qinwei Li +7
Play-based parent-child interaction offers preschoolers rich opportunities for everyday foreign language learning, yet many parents struggle to turn open-ended play into effective…
Irregular Traffic Time Series Forecasting Based on Asynchronous Spatio-Temporal Graph Convolutional Network
Weijia Zhang, Le Zhang, Jindong Han +5
Accurate traffic forecasting is crucial for the development of Intelligent Transportation Systems (ITS), playing a pivotal role in modern urban traffic management. Traditional fore…
Well-posedness of the Ericksen-Leslie System for the Oseen-Frank Model in L^3_{uloc}(\mathbb{R}^3)
Min-Chun Hong, Yu Mei
We investigate the Ericksen-Leslie system for the Oseen-Frank model with unequal Frank elastic constants in . To generalize the result of Hineman-Wang \cite{HW}, we p…
From Words to Molecules: A Survey of Large Language Models in Chemistry
Chang Liao, Yemin Yu, Yu Mei +1
In recent years, Large Language Models (LLMs) have achieved significant success in natural language processing (NLP) and various interdisciplinary areas. However, applying LLMs to…
BiPneu: Design and Control of a Bipolar-Pressure Pneumatic System for Soft Robots
Yu Mei, Xinyu Zhou, Vedant Naik +2
Positive-negative pressure regulation is critical to soft robotic actuators, enabling large motion ranges and versatile actuation modes. However, achieving high-performance regulat…
A Fully Data-Driven Approach for Realistic Traffic Signal Control Using Offline Reinforcement Learning
Jianxiong Li, Shichao Lin, Tianyu Shi +5
The optimization of traffic signal control (TSC) is critical for an efficient transportation system. In recent years, reinforcement learning (RL) techniques have emerged as a popul…
Asymptotic stability of shock profiles and rarefaction waves to the Navier-Stokes-Poisson system under space-periodic perturbations
Yeping Li, Yu Mei, Yuan Yuan
This paper concerns with the large-time behaviors of the viscous shock profile and rarefaction wave under initial perturbations which tend to space-periodic functions at infinities…
Global Classical Solutions to the 2D Compressible MHD Equations with Large Data and Vacuum
Yu Mei
In this paper, we study the global well-posedness of classical solutions to the 2D compressible MHD equations with large initial data and vacuum. With the assumption an…
Adapting AI to the Moment: Understanding the Dynamics of Parent-AI Collaboration Modes in Real-Time Conversations with Children
Yu Mei, Ziyao Zhang, Qingyang Wan +5
Parent-AI collaboration to support real-time conversations with children is challenging due to the sensitivity and open-ended nature of such interactions. Existing systems often si…
Contextualizing MLP-Mixers Spatiotemporally for Urban Data Forecast at Scale
Tong Nie, Guoyang Qin, Lijun Sun +3
Spatiotemporal traffic data (STTD) displays complex correlational structures. Extensive advanced techniques have been designed to capture these structures for effective forecasting…
PAGE: Towards Practical Human-level Gaze Target Estimation
Zhoutong Ye, Chengwen Zhang, Zhaibin Cui +10
Gaze target estimation, the task of predicting where a person is looking in a scene, is crucial to understanding human attention and intent. It is a challenging task that combines…
Uniform regularity for the free surface compressible Navier-Stokes equations with or without surface tension
Yu Mei, Yong Wang, Zhouping Xin
In this paper, we investigate the uniform regularity of solutions to the 3-dimensional isentropic compressible Navier-Stokes system with free surfaces and study the corresponding a…
Learning-Based Modeling of Soft Actuators Using Euler Spiral-Inspired Curvature
Yu Mei, Shangyuan Yuan, Xinda Qi +2
Soft robots, distinguished by their inherent compliance and continuum structures, present unique modeling challenges, especially when subjected to significant external loads such a…