Explanipedia

CLAE: A High‐Fidelity Nanopore Sequencing Strategy for Read‐Level Viral Variant Detection and Environmental RNA Virus Discovery Open

Hannah Yu, Sarah Golconda, Ga‐Eun Lee, Dong Xue, Guillermo Domínguez‐Huerta , et al. · 2025

High‐fidelity (HF) long‐read sequencing enables accurate profiling of microorganisms and pathogens at single‐molecule resolution. However, current Oxford Nanopore Technologies (ONT)—a revolutionary platform offering real‐time, portable seq…

Flapping-wing robot achieves bird-style self-takeoff by adopting reconfigurable mechanisms Open

Ang Chen, Bifeng Song, Kang Liu, Zhihe Wang, Dong Xue , et al. · 2025

Flying vertebrates use specialized wingbeat kinematics in hovering, takeoff, and landing, featuring ventrally anterior downstrokes and aerodynamically inactive upstrokes to enhance aerodynamic characteristics at low airspeeds. Rarely imple…

Multi-View, Multi-Target Tracking in Low-Altitude Scenes with UAV Involvement Open

Pengnian Wu, Yixuan Li, Zhihao Li, Xuqi Yang, Dong Xue · 2025

Cooperative visual tracking involving unmanned aerial vehicles (UAVs) in low-altitude environments is a dynamic and rapidly evolving domain. Existing models encounter challenges with targets, such as scale variation, appearance similarity,…

Improved Scaling Law for Bio-Inspired Flapping Micro Air Vehicles Open

Liu Dr. Liu, Jianlin Xuan, Yugang Zhang, Bifeng Song, X. Liu , et al. · 2025

Research on Improvement Methods for Driven System of Bio-Inspired Aircraft to Increase Flight Speed Open

Dong Xue, Runkang Li, Jiayuan Liu · 2024

The flapping-wing ornithopter is an aircraft that imitates the flight of birds in nature. It has significant potential and value in various fields such as surveying, search and rescue, military reconnaissance, and unmanned warfare, due to …

A numerical study on the aerodynamic effects of dynamic twisting on forward flight flapping wings Open

Yuanbo Dong, Bifeng Song, Wenqing Yang, Dong Xue · 2024

To better understand the secret of natural flying vertebrates such as how humming-birds twist their wings to achieve superb flight ability, we presented a numerical investigation of dynamic twisting based on a hummingbird-like flapping win…

Resonance mechanism of flapping wing based on fluid structure interaction simulation Open

Yueyang Guo, Wenqing Yang, Yuanbo Dong, Dong Xue · 2024

Certain insect species have been observed to exploit the resonance mechanism of their wings. In order to achieve resonance and optimize aerodynamic performance, the conventional approach is to set the flapping frequency of flexible wings b…

Effects of dynamical spanwise retraction and stretch on flapping-wing forward flights Open

Kang Liu, Bifeng Song, Ang Chen, Zhihe Wang, Dong Xue , et al. · 2024

Birds and bats retract and stretch their wings dynamically during each flap in level flights, implying intriguing mechanisms for the aerodynamic performance improvement of flapping wings. A numerical investigation into the aerodynamic effe…

Event-Triggered Hierarchical Planner for Autonomous Navigation in Unknown Environment Open

C. L. Philip Chen, Bifeng Song, Qiang Fu, Dong Xue, Lei He · 2023

End-to-end deep neural network (DNN)-based motion planners have shown great potential in high-speed autonomous UAV flight. Yet, most existing methods only employ a single high-capacity DNN, which typically lacks generalization ability and …

Aerodynamic performance of flapping wing with alula under different kinematics of complex flapping motion Open

Han Bao, Bifeng Song, Dongfu Ma, Dong Xue · 2023

The flight of birds is a remarkable feat, and their remarkable ability to fly derives from complex multi-degree-of-freedom flapping motions and small-scale feather structures that have evolved over millions of years. One of these feather s…

Numerical investigation of non-planarity and relative motion for bionic slotted wings Open

Dan Liu, J.C. Cheng, Bifeng Song, Wenqing Yang, Dong Xue · 2023

Bird wings have split primary feathers that extend out from the wing surface. This structure is called the wingtip slot, which is recognized as a product of bird evolution to improve flight performance. In this paper, numerical simulations…

Optimization of a Twistable Hovering Flapping Wing Inspired by Giant Hummingbirds Using the Unsteady Blade Element Theory Open

Yuanbo Dong, Bifeng Song, Wenqing Yang, Dong Xue · 2023

Due to the complexity of tailoring the wing flexibility and selecting favorable kinematics, the design of flapping wings is a considerably challenging problem. Therefore, there is an urgent need to investigate methods that can be used to d…

Effects of dynamical chordwise retracting and stretching on the propulsive performance of a pure plunging flat plate Open

Kang Liu, Bifeng Song, Zhihe Wang, Ang Chen, Dong Xue · 2023

An innovative morphing scheme, i.e., dynamical chordwise retracting and stretching, has been proposed for flapping wings. Its aerodynamic effects have been investigated based on a plunging two-dimensional flat wing. The conclusive results …

Sensitivity Analysis of Wing Geometric and Kinematic Parameters for the Aerodynamic Performance of Hovering Flapping Wing Open

Xinyu Lang, Bifeng Song, Wenqing Yang, Xiaojun Yang, Dong Xue · 2023

The wing planform and flapping kinematics are critical for the hovering flight of flapping wing micro air vehicles (FWMAVs). The degree of influence of wing geometry and kinematic parameters on aerodynamic performance still lacks in-depth …

Temporal and spatial distribution, deposit type and tectonic setting of East Tianshan tungsten deposit Open

Xiao‐Hua Deng, Xiao JIANG, YanShuang WU, Dong Xue, PengFei ZHAO , et al. · 2023

东天山是中亚增生造山带的重要组成部分, 蕴含了重要的铁、铜、镍、铅锌、金、钼、铷等矿床。近年来, 东天山地区陆续发现了十余个大中型钨矿床, 有望成为重要的钨矿资源基地。本文介绍了东天山地区钨矿床的地质特征、时空分布与构造背景, 总结了东天山钨矿成矿规律, 开展了成矿预测。东天山地区钨矿类型主要包括矽卡岩型、石英脉型及云英岩型, 钨矿床的空间分布明显受控于前寒武纪结晶基底, 成矿时间主要聚焦于三叠纪和晚石炭世。其中, 中天山地块的矽卡岩型钨矿和东南缘的石英脉型钨矿形成于三叠纪…

A Novel Actuation Strategy for an Agile Bioinspired FWAV Performing a Morphing-Coupled Wingbeat Pattern Open

Ang Chen, Bifeng Song, Zhihe Wang, Dong Xue, Kang Liu · 2022

Flying vertebrates exhibit sophisticated wingbeat kinematics. Their\nspecialized forelimbs allow for the wing morphing motion to couple with the\nflapping motion during their level flight, Previous flyable bionic platforms\nhave successful…

Longitudinal Trim and Dynamic Stability Analysis of a Seagull-Based Model Open

Dong Xue, Bifeng Song, Wenping Song · 2022

Understanding the mechanisms of trim and flight stability in birds is critical to guide the design of bionic micro air vehicles. The complex movements (plunging, sweeping, twisting) and morphing of wings always keeps the flapping flight of…

Numerical Study of the Aerodynamics of a Hovering Hummingbird’s Wing with Dynamic Morphing Open

Yuanbo Dong, Bifeng Song, Dong Xue, Yuanbo Li, Wenqing Yang · 2022

To deepen our understanding of the aerodynamics by which hummingbirds use flexible wings to hover efficiently during flapping flight, a three-dimensional wing model with dynamic morphing was developed according to the morphological and kin…

Lift performance enhancement for flapping airfoils by considering surging motion Open

Tao Wu, Bifeng Song, Wenping Song, Wenqing Yang, Dong Xue , et al. · 2021

The flapping motion has a great impact on the aerodynamic performance of flapping wings. In this paper, a surging motion is added to an airfoil performing pitching-plunging combined motion to figure out how it influences the lift performan…

A Brief Review on Aerodynamic Performance of Wingtip Slots and Research Prospect Open

Dan Liu, Bifeng Song, Wenqing Yang, Xiaojun Yang, Dong Xue , et al. · 2021

Wingtip slots, where the outer primary feathers of birds split and spread vertically, are regarded as an evolved favorable feature that could effectively improve their aerodynamic performance. They have inspired many to perform experiments…

Study of aerodynamic and inertial forces of a dovelike flapping-wing MAV by combining experimental and numerical methods Open

Yang Xiaowu, Bifeng Song, Wenqing Yang, Dong Xue, Yang Pei , et al. · 2021

The force-generation mechanism of a dovelike flapping-wing micro air vehicle was studied by numerical simulation and experiment. To obtain the real deformation pattern of the flapping wing, the digital image correlation technology was used…

The Progress of Aerodynamic Mechanisms Based on Avian Leading-Edge Alula and Future Study Recommendations Open

Han Bao, Bifeng Song, Wenqing Yang, Jianlin Xuan, Dong Xue · 2021

Birds in nature have many unique devices to help them acquire excellent flight abilities under various complex flight conditions. One of the unique devices is the leading-edge alula, located at the junction of the arm wing and the hand win…

Unsteady characteristic research on aerodynamic interaction of slotted wingtip in flapping kinematics Open

Dan Liu, Bifeng Song, Wenqing Yang, Dong Xue, Xinyu Lang · 2021

The slotted wingtip structure of birds is considered to be the product of improving flight efficiency in the process of evolution. It can change the vortex structure of wingtip and improve aerodynamic efficiency. This paper reports a numer…

Landing route planning method for micro drones based on hybrid optimization algorithm Open

Shaoran Liang, Bifeng Song, Dong Xue · 2021

Aiming at the obstacle avoidance trajectory planning problem in the landing process of the micro drone, this paper proposes a swarm optimization algorithm that combines the dragonfly optimization method and the differential evolution metho…

Investigations on the thermal behavior and associated thermal stresses for short pulse laser heating Open

Dong Xue, Jinbao Wang, Guangying Xu · 2019

The fractional type Cattaneo heat conduction equation and the associated thermal stress equation are established for studying the thermal and related stress behavior of the short pulse laser heating. With the Laplace transform method, the …

Existing Problems and Improving Methods in the Classroom Teaching of Primary and Secondary Schools Open

Qinghua Li, Qingpeng Huang, Dong Xue · 2018

Adhering to education, serving for socialist modernization, serving the people, combining production labor with social practice, and cultivating socialist builders and successors in all aspects of moral, intellectual, physical and aestheti…

Uncertainty Quantification of Spray Wall Impingement Simulation Open

Jingjing Cao, Min Xu, David L. S. Hung, Hujie Pan, Dong Xue · 2017

Wall wetting phenomenon in direct-injection spark-ignition (DISI) engine has been demonstrated to increase both the fuel consumption and soot emissions. The drawbacks of impinging spray become more severe under cold start conditions. Howev…

Research and Practice on Teaching Reformation of Engineering Mathematics in Application-oriented Colleges Open

Dong Xue, Mingji Zong, Lei Ma · 2017

Engineering mathematics is a branch of applied mathematics which is an important fundamental undergraduate course of science and engineering majors in most colleges and universities, especially the application-oriented colleges.Combining t…

Practice and Exploration of Online Course Construction for Methods of Mathematical Physics Open

Dong Xue, Xingfang Zhang, Bin Zhang · 2017

Although the traditional lecture prevails in higher education as the most popular teaching method, recent technological advances have made possible blended or hybrid learning classrooms, in which students learn at least in part through onl…

Effect of wing flexibility on flight dynamics stability of flapping wing MAVs in forward flight Open

Dong Xue, Bifeng Song, Wenping Song, Wenqing Yang · 2016

The paper presents a qualitative study of the effect of the wing flexibility on the flight stability of flapping wing micro air vehicles in forward flight. The longitudinal dynamic flight stability is compared between rigid wing flapping w…

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