Explanipedia

Emergence of Novel QX-Type IBV in China: Molecular Insights into Unique S Protein Cleavage Sites, Antigenic Drift, and Enhanced Pathogenicity (2025) Open

Joshua Leong Wei Ren, Yuanxin Wu, Qiaoli Yang, Xirong Huang, Jin Zhou , et al. · 2025

Avian infectious bronchitis virus (IBV) is a major pathogen impacting the global poultry industry. The QX genotype (GI-19 lineage) of IBV has rapidly spread worldwide and is now the dominant genotype in Asia and Europe. In this study, thre…

CT-ESKF: A General Framework of Covariance Transformation-Based Error-State Kalman Filter Open

Jiale Han, Wei Ouyang, Maoran Zhu, Yuanxin Wu · 2025

Invariant extended Kalman filter (InEKF) possesses excellent trajectory-independent property and better consistency compared to conventional extended Kalman filter (EKF). However, when applied to scenarios involving both global-frame and b…

Construct prediction models for low muscle mass with metabolic syndrome using machine learning Open

Yuanxin Wu, Li Fu, Hao Chen, Liang Shi, Meng Yin , et al. · 2025

Background Metabolic syndrome (MetS) and sarcopenia are major global public health problems, and their coexistence significantly increases the risk of death. In recent years, this trend has become increasingly prominent in younger populati…

Generic Calibration: Pose Ambiguity/Linear Solution and Parametric-hybrid Pipeline Open

Yuqi Han, Qi Cai, Yuanxin Wu · 2025

Offline camera calibration techniques typically employ parametric or generic camera models. Selecting parametric models relies heavily on user experience, and an inappropriate camera model can significantly affect calibration accuracy. Mea…

Harnessing Electrochemistry for Direct Deoxygenative Silylation of Alcohols and Ketones Open

Yanping Zheng, Yuanxin Wu, Liping Su, Peng Xiong, Hai‐Chao Xu · 2025

Alcohols and ketones are abundant and structurally diverse feedstocks, yet their direct transformation into organosilicon compounds remains challenging due to the difficulty in selective cleaving C─OH and C═O bonds. Here, we report an elec…

Harnessing Electrochemistry for Direct Deoxygenative Silylation of Alcohols and Ketones Open

Peng Xiong, Hai‐Chao Xu, Yanping Zheng, Yuanxin Wu · 2025

Alcohols and ketones are abundant and structurally diverse feedstocks, yet their direct transformation into organosilicon compounds remains challenging due to the difficulty in selective cleaving C–OH and C=O bonds. Here, we report an elec…

Energy-Absorbing Performance of Metallic Thin-Walled Porous Tubes Filled with Liquid Crystal Elastomers Under Dynamic Crush Open

Xing Hu, Shaohua Niu, Yuanxin Wu, Bingyang Li, Zhen Li , et al. · 2025

Metallic thin-walled porous tubes have been widely applied in energy absorption fields due to their unique mechanical properties. Inspired by foam-filled structures, liquid crystal elastomers as a new category of metamaterials were filled …

A Study on the Uniaxial Compressive Constitutive Characteristics of Phosphogypsum-Based Irregular-Shaped Bricks (PG-ISBs) for Underground Filling Retaining Walls Open

Jixiang Jiang, Guihong Xu, Zhenhua Zhao, Hejun Li, Mingwei He , et al. · 2025

This study investigated the mechanical properties of a cementitious material used to prepare irregular-shaped brick masonry structures (PG-ISBs) from industrial solid wastes, including phosphogypsum, calcium powder, cementitious agents, an…

Crossroads of Inertial Navigation Computation across Five Decades Open

Yuanxin Wu · 2025

Pseudolite Self-Interference Cancellation Without Additional GNSS Signal Distortion Open

Lichao Gao, Jin He, Yuanxin Wu, Wenxian Yu · 2025

The goal of this paper is to solve the low-orbit pseudolite self-interference problem. The low-orbit pseudolite navigation signals will interference satellite navigation as they broadcast at the same frequency and same time. However, the l…

An Immediate Update Strategy of Multi-State Constraint Kalman Filter Open

Qingchao Zhang, Wei Ouyang, Jiale Han, Qi Cai, Maoran Zhu , et al. · 2024

The lightweight Multi-state Constraint Kalman Filter (MSCKF) has been well-known for its high efficiency, in which the delayed update has been usually adopted since its proposal. This work investigates the immediate update strategy of MSCK…

Exploring Superconductivity: From Historical Milestones to Future Frontiers Open

Yuanxin Wu · 2024

Superconductivity has been a highly popular topic at the forefront of science since scientists firstly discovered this phenomenon. An enormous number of papers have been devoted to superconductivity during the past 100 years. New discoveri…

Visual-inertial state estimation based on Chebyshev polynomial optimization Open

Hongyu Zhang, Maoran Zhu, Qi Cai, Yuanxin Wu · 2024

This paper proposes an innovative state estimation method for visual-inertial fusion based on Chebyshev polynomial optimization. Specifically, the pose is modeled as a Chebyshev polynomial of a certain order, and its time derivatives are u…

Observer-Free Fixed-Time Fault-Tolerant Control for Near-Space Hypersonic Vehicles with Unknown Actuator Faults and Mismatched Disturbances Open

Yujia Wang, Jinlu Dong, Muyuan Wang, Yuanxin Wu · 2024

Math-Shepherd: Verify and Reinforce LLMs Step-by-step without Human Annotations Open

Peiyi Wang, Lei Li, Zhihong Shao, Rongdong Xu, Damai Dai , et al. · 2023

In this paper, we present an innovative process-oriented math process reward model called \textbf{Math-Shepherd}, which assigns a reward score to each step of math problem solutions. The training of Math-Shepherd is achieved using automati…

Clifford Algebra-Based Iterated Extended Kalman Filter with Application to Low-Cost INS/GNSS Navigation Open

Wei Ouyang, Yutian Wang, Yuanxin Wu · 2023

The traditional GNSS-aided inertial navigation system (INS) usually exploits the extended Kalman filter (EKF) for state estimation, and the initial attitude accuracy is key to the filtering performance. To spare the reliance on the initial…

Inertial-based Navigation by Polynomial Optimization: Inertial-Magnetic Attitude Estimation Open

Maoran Zhu, Yuanxin Wu · 2023

Inertial-based navigation refers to the navigation methods or systems that have inertial information or sensors as the core part and integrate a spectrum of other kinds of sensors for enhanced performance. Through a series of papers, the a…

Investigation of Enhanced Inertial Navigation Algorithms by Functional Iteration Open

Hongyan Jiang, Yuanxin Wu · 2023

The defects of the traditional strapdown inertial navigation algorithms become well acknowledged and the corresponding enhanced algorithms have been quite recently proposed trying to mitigate both theoretical and algorithmic defects. In th…

iNavFIter-M: Matrix Formulation of Functional Iteration for Inertial Navigation Computation Open

Hongyan Jiang, Maoran Zhu, Yanyan Fu, Yuanxin Wu · 2022

The acquisition of attitude, velocity, and position is an essential task in the field of inertial navigation, achieved by integrating the measurements from inertial sensors. Recently, the ultra-precision inertial navigation computation has…

A Pose-only Solution to Visual Reconstruction and Navigation Open

Qi Cai, Lilian Zhang, Yuanxin Wu, Wenxian Yu, Dewen Hu · 2021

Visual navigation and three-dimensional (3D) scene reconstruction are essential for robotics to interact with the surrounding environment. Large-scale scenes and critical camera motions are great challenges facing the research community to…

A Trident Quaternion Framework for Inertial-based Navigation Part II: Error Models and Application to Initial Alignment Open

Wei Ouyang, Yuanxin Wu · 2021

This work deals with error models for trident quaternion framework proposed in the companion paper (Part I) and further uses them to investigate the odometer-aided static/in-motion inertial navigation attitude alignment for land vehicles. …

A Trident Quaternion Framework for Inertial-based Navigation Part I: Rigid Motion Representation and Computation Open

Wei Ouyang, Yuanxin Wu · 2021

Strapdown inertial navigation research involves the parameterization and computation of the attitude, velocity and position of a rigid body in a chosen reference frame. The community has long devoted to finding the most concise and efficie…

Segmenting Epipolar Line Open

Shengjie Li, Qi Cai, Yuanxin Wu · 2020

Identifying feature correspondence between two images is a fundamental procedure in three-dimensional computer vision. Usually the feature search space is confined by the epipolar line. Using the cheirality constraint, this paper finds tha…

Strapdown Attitude Computation: Functional Iterative Integration versus Taylor Series Expansion Open

Yuanxin Wu, Yury A. Litmanovich · 2020

This paper compares two basic approaches to solving ordinary differential equations, which form the basis for attitude computation in strapdown inertial navigation systems, namely, the Taylor series expansion approach that was used in its …

On inertial navigation and attitude initialization in polar areas Open

Yuanxin Wu, Chao He, Gang Liu · 2020

Inertial navigation and attitude initialization in polar areas become a hot topic in recent years in the navigation community, as the widely-used navigation mechanization of the local level frame encounters the inherent singularity when th…

Attitude Reconstruction From Inertial Measurements: QuatFIter and Its Comparison with RodFIter Open

Yuanxin Wu, Gongmin Yan · 2019

RodFIter is a promising method of attitude reconstruction from inertial measurements based on the functional iterative integration of Rodrigues vector. The Rodrigues vector is used to encode the attitude in place of the popular rotation ve…

iNavFIter: Next-Generation Inertial Navigation Computation Based on Functional Iteration Open

Yuanxin Wu · 2019

Inertial navigation computation is to acquire the attitude, velocity and position information of a moving body by integrating inertial measurements from gyroscopes and accelerometers. Over half a century has witnessed great efforts in copi…

General Method for Prime-point Cyclic Convolution over the Real Field Open

Cai Qi, Tsung‐Ching Lin, Yuanxin Wu, Wenxian Yu, Trieu‐Kien Truong · 2019

A general and fast method is conceived for computing the cyclic convolution of n points, where n is a prime number. This method fully exploits the internal structure of the cyclic matrix, and hence leads to significant reduction of the mul…

IEEE Access Special Section Editorial: GNSS, Localization, and Navigation Technologies Open

Seung-Hyun Kong, José A. López-Salcedo, Yuanxin Wu, Euiho Kim · 2019

Position and time are some of the most vital pieces of information for convenience, security, and safety in our daily lives and have enabled innovative advancements in many science and engineering fields. Since Global Positioning System (G…

StructVIO : Visual-inertial Odometry with Structural Regularity of Man-made Environments Open

Danping Zou, Yuanxin Wu, Ling Pei, Haibin Ling, Wenxian Yu · 2018

We propose a novel visual-inertial odometry approach that adopts structural regularity in man-made environments. Instead of using Manhattan world assumption, we use Atlanta world model to describe such regularity. An Atlanta world is a wor…

Yuanxin Wu YOU? Author Swipe