60,301 Result(s)
within
**hu Li
Engineering
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Article
Initial orbit determination of some cislunar orbits based on short-arc optical observations
Ground- and space-based optical observation is an efficient way to catalog objects in the cislunar space. Initial orbit determination based on optical data is still an open problem for cislunar objects. The mo...
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Precise orbit determination for Tianwen-1 during map** phase
The map** phase is a key stage of the Tianwen-1 orbiter. It has the longest exploration time and gathers abundant radio tracking data via the Chinese deep space network. Thus, it also provides opportunities ...
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A comparative assessment of gravitational field modeling methods for binary asteroid landing
The tradeoff between accuracy and efficiency in gravitational field modeling for binary asteroid landing is one of the challenges in dynamical analyses. Four representative gravitational modeling methods are e...
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Open AccessBiomechanical energy harvesting technologies for wearable electronics: Theories and devices
Wearable biomechanical energy harvesting devices have received a lot of attention recently, benefiting from the rapid advancement of theories and devices in the field of the micro electromechanical system (MEM...
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Experimental Study on the Diesel Injection Pressure of Homogeneous Charge Induced Ignition for Multi-cylinder Operation
Homogeneous charge-induced ignition (HCII), which uses trace diesel to induce the ignition of gasoline pre-mixture, is characterized by rapid lean combustion and is generally regarded as efficient, clean and c...
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Empirical Evaluation of RMR, GSI, and Q for Underground Excavations
Over the past few decades, numerous authors have published empirical correlations among rock mass classification systems, conducted under specific geological conditions. As a result, the validity of these corr...
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Multi-Agent Path Planning Method Based on Improved Deep Q-Network in Dynamic Environments
The multi-agent path planning problem presents significant challenges in dynamic environments, primarily due to the ever-changing positions of obstacles and the complex interactions between agents’ actions. Th...
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Offset boosting-based attractor doubling of Rulkov neuron
The polarity adjustment of the neuronal signals plays an important role in neuron dynamics. In this work, attractor doubling is obtained through offset boosting to regulate the distance between two coexisting ...
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Fractional-order effect on soliton solution and the oscillation number for some time-space fractional higher-order nonlinear Schrödinger equations
The time(T)- and time-space(TS)-fractional higher-order Schrödinger(FHNLS) equations are studied, which can describe the dispersion and nonlinearity of optical pulse propagating in nonuniform fiber systems. Th...
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Correction to: Fast aggregation method of WSNs dynamic data based on micro-cluster evolutionary learning
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Transforming the map with a multicavity attractor to the one with multiple coexisting cavity-attractors
Typically, the Self-Cascade (SC) system of a discrete map exhibits more complex dynamics. Based on the hypothesis, multiple coexisting cavity-attractors are extracted out from the multicavity map by the approa...
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Article
Synthesis of Chlorfenazole from 2-Chlorobenzalmalononitrile Extracted from Expired Tear-Gas Grenade
Tear gases were originally manufactured as weapons that could severely disable or kill enemy troops. Though banned in war, these chemicals are still used in domestic policing. Due to ammunition management rule...
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Open AccessNonlinear spatiotemporal characteristics of wind–rain flow around the trains passing through the tunnel entrance during rainstorms
Tropical storms present a significant risk to the safety of high-speed trains due to the extreme wind and rainfall they bring. This study employs Eulerian multiphase and Shear-Stress Transport k-ω turbulence mode...
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GeoVis: a data-driven geographic visualization recommendation system via latent space encoding
As one of the effective means of representing geographic information, geographic visualization can directly improve the cognitive efficiency of users who are perceiving geospatial data. The existing geographic...
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Response of hydraulic pipes to combined excitation in thermal environment
Generally, the hydraulic pipe of a warplane experiences the pulsating flow generated by the plunger pump and the strong excitation generated by the jet engine. Furthermore, the pipe is situated in a high-tempe...
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Backlash compensation based oscillation suppression control for automatic loading manipulator arm with nonlinear extended state observer
A servo system of automatic loading manipulator arm (ALMA) with backlash nonlinearity is investigated in this paper to suppress the limit cycle oscillation. To provide a more accurate representation of the sys...
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Research on vibration suppression of nonlinear energy sink with linear dam** and geometrically nonlinear dam**
Nonlinear energy sink (NES) is a passive control device that can absorb a wide band, and it has the advantages of lightweight and strong robustness, which can play a very important role in vibration suppressio...
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ConDA: state-based data augmentation for context-dependent text-to-SQL
The context-dependent text-to-SQL task has profound real-world implications, as it facilitates users in extracting knowledge from vast databases, which allows users to acquire the information interactively for...
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Open AccessStochastic uncertain lubrication in gear transmission subjected to tribodynamic loading
A stochastic uncertain tribodynamic model is established for a spur gear pair for the first time. The stochastic uncertainty of pinion rotation speed propagated to lubrication performance is investigated. The ...
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Multi-objective Optimization and Performance Analysis of Dual-Rotor Hub Motor Based on Comprehensive Sensitivity Stratification
To solve the shortcomings of the existing hub motors in the practical application of electric vehicles, an integrated dual-rotor hub motor (DRHM) was proposed, which can realize multiple drive modes to adapt t...
