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Article
Deployment and Blossoming Analysis of a Fiber Reinforced Polymer (FRP) Collapsible Tubular Mast (CTM) Boom for Aerospace Applications
Extendable tip-spring booms commonly manufactured from FRP laminates are new kinds of deployable mechanisms widely used for aerospace technologies. Among them, three kinds of boom cross-section configurations ...
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Article
Open AccessEnhancing robustness in asynchronous feature tracking for event cameras through fusing frame steams
Event cameras produce asynchronous discrete outputs due to the independent response of camera pixels to changes in brightness. The asynchronous and discrete nature of event data facilitate the tracking of prol...
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Article
Sensitive detection of choline and nicotine in real samples by switching upconversion luminescence
Nicotine (3-(1-methyl-2-pyrrolidinyl)pyridine) is one of the most common addictive substances, causing the trace detection of nicotine to be very necessary. Herein, we designed and prepared a functionalized na...
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Article
Axis path planning of five-axis surface machining by optimizing differential vector of the axis movement considering tool posture limits
Two rotating axes of the five-axis machine tools complicate the kinematics, which increases the difficulty of trajectory planning of five-axis CNC machining. In the process of machining a free-form surface wit...
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Article
A Unified Motion Generation Approach for Quadruped L-S Walk and Trot Gaits Based on Linear Model Predictive Control
The goal of this paper is to develop a unified online motion generation scheme for quadruped lateral-sequence walk and trot gaits based on a linear model predictive control formulation. Specifically, the dynam...
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Article
Exploring luminescence quenching on lanthanide-doped nanoparticles through changing the spatial distribution of sensitizer and activator
Luminescence quench is common in overdoped upconversion nanoparticles. Various methods have been proposed to counteract the adverse effects of concentration quenching on luminescence, but in upconversion nanop...
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Article
Open AccessBionic visual navigation model for enhanced template matching and loop closing in challenging lighting environments
In recent years, various computational models have been proposed in neuroscience, but only a few have been utilized in robot visual navigation through engineering approaches. Besides, these engineering methods...
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Article
A novel micro-defect classification system based on attention enhancement
A surface micro-defect is characterized by a small size and a susceptibility to noise. Micro-defect detection and classification is very challenging. This paper proposes a Micro-defect classification system ba...
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Article
Reinforcement Learning Navigation for Robots Based on Hippocampus Episode Cognition
Artificial intelligence is currently achieving impressive success in all fields. However, autonomous navigation remains a major challenge for AI. Reinforcement learning is used for target navigation to simulat...
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Article
Pre-melted electron beam freeform fabrication additive manufacturing: modeling and numerical simulation
A simulation of heat and mass transfer for a new additive manufacturing method, pre-melted electron beam freeform fabrication, was realized. In this new method, the wire melts inside the diversion nozzle to fo...
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Article
Theory and Application of High-Precision Preoperative Positioning for Cochlear Surgical Robot
According to a World Health Organization survey report in 2021, 430 million people worldwide currently suffer from moderate or severe hearing impairment. Cochlear implant surgery is one of the most effective w...
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Article
Self-Transfer Learning Network for Multicolor Fabric Defect Detection
This paper presented a self-transfer learning network (STLN) for multicolor fabric defect detection. Deep neural networks were adopted to detect defects in objects with complex backgrounds such as multicolored...
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Article
How did the Tonga volcanic tsunami on January 15, 2022, affect Chinese coasts?
At 12:15 on January 15, 2022 (Bei**g time), a massive eruption of the Hunga Tonga-Hunga Ha’apai volcano produced violent atmospheric fluctuations, which in turn generated a global tsunami through an abrupt ai...
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Article
PRTIRL Based Socially Adaptive Path Planning for Mobile Robots
In recent years, learning-based methods have been increasingly studied to combine social norms with mobile robot navigation, such as social proxemics, distance to pedestrians, passing ways, etc. In these chall...
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Article
Robot Navigation Strategy in Complex Environment Based on Episode Cognition
The hippocampal formation of the brain contains a series of nerve cells related to environmental cognition and navigation. These cells can integrate their moment information and external perceptual information...
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Article
An Inverted Residual based Lightweight Network for Object Detection in Swee** Robots
Object detection is a core capability required by swee** robots to conduct their cleanup jobs. Currently, deep learning-based object detection has achieved high accuracy; however, owing to the large number o...
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Article
Open AccessNaBiF4-based hollow upconversion nanoparticles for temperature sensing
Hollow upconversion nanoparticles with tunable central cavity size can be used as self-referenced luminescent thermometers over a wide temperature range.
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Article
An efficient method to improve travel time delays of transoceanic tsunamis based on depth-correction scheme
This present study aims to reduce the systematic arrival time discrepancies between observed and modeled waveforms in the deep ocean effectively. We proposed an effective depth-correction method to mimic the s...
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Article
Open AccessLanthanide-doped heterostructured nanocomposites toward advanced optical anti-counterfeiting and information storage
The continuously growing importance of information storage, transmission, and authentication impose many new demands and challenges for modern nano-photonic materials and information storage technologies, both...
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Article
Insights on the small tsunami from January 28, 2020, Caribbean Sea MW7.7 earthquake by numerical simulation and spectral analysis
A major left-lateral strike-slip Mw7.7 earthquake occurred in the vicinity of the Caribbean Sea on January 28, 2020. As a result, a small-scale tsunami was generated. The properties of the seismogenic source were...
