A5101757862- Ultrasonics and Acoustic Wave Propagation
- Non-Destructive Testing Techniques
- Spacecraft Design and Technology
- Spacecraft and Cryogenic Technologies
- Geophysical Methods and Applications
- Pulsars and Gravitational Waves Research
- Fluid Dynamics and Turbulent Flows
- Welding Techniques and Residual Stresses
- Geophysics and Gravity Measurements
- Structural Analysis and Optimization
- Enhanced Oil Recovery Techniques
- Spacecraft Dynamics and Control
- Composite Structure Analysis and Optimization
- Cosmology and Gravitation Theories
- Infrastructure Maintenance and Monitoring
- Advanced Numerical Methods in Computational Mathematics
- Rocket and propulsion systems research
- Housing Market and Economics
- Space Science and Extraterrestrial Life
- Advanced Sensor and Control Systems
- Advanced Fiber Optic Sensors
- Aerodynamics and Acoustics in Jet Flows
- Inertial Sensor and Navigation
- Acoustic Wave Resonator Technologies
- Recommender Systems and Techniques
Beijing University of Technology
2011-2024
Film Independent
2024
Kunming University of Science and Technology
2023
China Academy of Space Technology
2018-2023
Shandong University
2023
University of Jinan
2023
Anhui University of Finance and Economics
2023
Daqing Oilfield of CNPC
2022
Research Institute of Petroleum Exploration and Development
2022
Shanghai Institute of Technology
2020
In this study, the relationships between five renewable energy sub-sectors markets and geopolitical risk (GPR) economic uncertainty indices (EUI) were examined using daily data from March 30, 2012, to April 1, 2022. Convergent cross mapping results show that have definite with GPR EUI. The differences in response directions, speed trends for a standard information difference impulse A positive dynamic conditional correlation energies EUI was observed first second waves of COVID-19 outbreak....
Ultrasonic surface wave electromagnetic acoustic transducers (EMATs) have been widely utilized in detecting defects of metal materials due to their noncontact advantages. However, the signal energy EMAT is weak, mainly influenced by conversion efficiency. Increasing number excitation cycles can enhance energy, but it leads longer pulsewidth and reduced time-domain resolution. Meanwhile, most existing studies excite waves with a single frequency, frequency information components are limited....
The service life and structural safety of components are affected by the thermal ageing materials; therefore, a non-destructive evaluation materials is extremely essential crucial. In this work, heat-resistant steel Cr12MoV was selected as specimen, embrittlement period obtained accelerated experiments. effects temperature time on mechanical properties were analysed. testing carried out using magneto-acoustic compound detection techniques based electromagnetic acoustic transducers. process,...
TianQin is a proposed space-borne gravitational wave observatory in high geocentric orbits, exposed to radiating heat sources space. Due the stringent thermal stability requirements from key payloads, analysis of space environment great importance. This paper studies incident radiation onto satellites Sun–Earth–Moon system. The solar constant fluctuation (SCF) and Earth's land-type features, based on meteorological data, are considered, an analytic function lunar surface temperature used....
Solid texture synthesis (STS), an effective way to extend a 2D exemplar 3D solid volume, exhibits advantages in computational photography. However, existing methods generally fail accurately learn arbitrary textures, which may result the failure synthesize textures with high fidelity. In this paper, we propose novel generative adversarial nets-based framework (STS-GAN) given textures. STS-GAN, multi-scale discriminators evaluate similarity between and slices from generated texture, promoting...
Abstract Flat-top Sun shield is a part of the disturbance reducing system on space-based gravitational wave detector TianQin. The expected to guards temperature stability satellite’s top deck from low-frequency solar flux fluctuation. This paper introduces an analytic method study shield’s response sinusoidal variations incoming heat flux. Oscillation mode field described in form equation, which satisfies globally thermal diffusion equation. continuity equation solved reveal behaviours when...
Helicobacter pylori is a potential underlying cause of many diseases. Although the Carbon 13 breath test considered gold standard for detection, it high cost and low public accessibility in certain areas limit its widespread use. In this study, we sought to use machine learning deep algorithm models classify diagnose H. infection status. We used hyperspectral imaging system gather gastric juice images then retrieved spectral feature information between 400 1000 nm. Two different data...
To improve the efficiency and robustness of electromagnetic ultrasonic testing, magneto-acoustic compound inspection for ferromagnetic materials is proposed. Both waves pulsed eddy current (PEC) could be obtained by single detection an acoustic transducer (EMAT), where were generated based on coupling magnetostriction effect Lorentz force mechanism, when EMAT was used to detect materials. In this study, three simulation models built different physics fields while keeping geometry unchanged...
In this study, an advanced magnetoacoustic compound inspection method for a high-order Lamb waves mode electromagnetic acoustic transducer (EMAT) was proposed. The proposed EMAT can achieve the excitation and reception of A <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> which is first-order mode. According to characteristics testing signal, signal processing obtaining pulsed eddy current by curve fitting developed extract information...
The production performance of waterflood reservoirs with years is severely challenged by high water cuts and extensive channels. Among IOR/EOR methods, weak gel injection particularly effective in improving the displacement efficiency oil recovery. visualized microscopic experiments were designed to comprehensively investigate mechanisms porous media numerical simulations coupling equations characterizing viscosity induced dynamics implemented understand its planar vertical block movement...
Abstract Space-borne gravitational wave (GW) detectors aim to detect GWs in low and middle frequency ranges, as a complement the terrestrial like LIGO VIRGO. As are extremely sensitive temperature fluctuation, great efforts have been taken perform thermal analyses on satellite platforms. Our previous work analysed external environment of an individual for TianQin mission. This paper raises issue disparity across triangular constellation. Based optimized orbits TianQin, LISA, eLISA/NGO,...
Critical issues in the development of oil fields include differences layer properties as well serious interlayer conflicts and disturbances that can lead to formation a preferential flow pathway. In order understand disturbance mechanism between heterogeneous layers, mathematical models polymer, two-phase micro-flow porous media are established based on Navier-Stokes equation. The phase-field method is used track interface during displacement process. Then, influences wettability, injection...
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