A5100425682- Lightning and Electromagnetic Phenomena
- Industrial Technology and Control Systems
- Advanced Algorithms and Applications
- Advanced Sensor and Control Systems
- Electromagnetic Compatibility and Noise Suppression
- Laser-induced spectroscopy and plasma
- Fire effects on ecosystems
- Astro and Planetary Science
- Advanced Control Systems Optimization
- High-Voltage Power Transmission Systems
- Chaos control and synchronization
- Wind Energy Research and Development
- Icing and De-icing Technologies
- Planetary Science and Exploration
- Neural Networks Stability and Synchronization
- Elevator Systems and Control
- Spectroscopy and Chemometric Analyses
- Complex Network Analysis Techniques
- Space exploration and regulation
- Complex Systems and Time Series Analysis
- Electrical Fault Detection and Protection
- Fault Detection and Control Systems
- Traffic control and management
- Quantum chaos and dynamical systems
- Nonlinear Dynamics and Pattern Formation
Shandong University
2015-2024
Shandong University of Political Science and Law
2016-2024
Weihai Science and Technology Bureau
2024
Fudan University
2023
Beijing Information Science & Technology University
2023
Hefei University of Technology
2022
Chinese Academy of Surveying and Mapping
2022
National Astronomical Observatories
2022
Chinese Academy of Sciences
2022
University of Chinese Academy of Sciences
2022
Abstract The Vastitas Borealis Formation is a Hesperian-aged sedimentary unit that mainly covers the Martian northern plains. Its environment of formation uncertain but may be related to an ancient ocean, outflow channel deposits, compaction and drainage activities, or subsurface ice-related processes. Here we investigate geological evolution using geochemical mineralogical data acquired by Mars Surface Composition Detector on board Zhurong rover at Tianwen-1 landing site. We find...
The stepped leader process in negative cloud-to-ground lightning plays a vital role protection analysis. As discharge usually presents significant branched or tortuous channels, the charge distribution along channels and stochastic feature of propagation were investigated this paper. density channel tip for each branch approximated by introducing correlation coefficients. In combination with geometric characteristics natural discharge, model was presented based on fractal theory. By...
Autoencoder is an excellent unsupervised learning algorithm. However, it can not generate kinds of sample data in the decoding process. Variational autoencoder a typical generative adversarial net which various to augment data. In this paper, we want do some research about information hidden layer. simulation, compare layer conventional and variational autoencoder.
While satellite-based remote sensing offers a promising avenue for large-scale LCC estimations, the accuracy of evaluations is often decreased by mixed pixels, attributable to distinct farming practices and diverse soil conditions. To overcome these challenges account maize intercropping with soybeans at different growth stages combined varying backgrounds, hyperspectral database was set up using random linear model applied data recorded an unmanned aerial vehicle (UAV). Four methods,...
The half-wavelength AC transmission technology is attracting more and attentions home abroad by its unique economic technological advantages. paper starts describing the history research status of technology, then sums up basic characteristics technology. This carries out a detailed analysis about several key technical issues lines, including artificial line tuning network optimization, power transient stability characteristics, operation maintenance arc suppression, internal over-voltage....
Social influence is a complex and subtle force that governs the dynamics of social networks. In past years, lot research work has been conducted to understand spread patterns influence. However, most approaches assume exists between users with active interactions, but ignore question what kind happens them. As such one interesting also fundamental raised here: "in network, could connection reflect users'influence from both positive negative aspects?". To this end, an Opinion Oriented Link...
PID controller is used in most of the current-speed closed-loop control permanent magnet synchronous motors (PMSM) servo system. However,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mrow><mml:msub><mml:mrow><mml:mi>K</mml:mi></mml:mrow><mml:mrow><mml:mi>p</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>,<mml:math id="M2"><mml:mrow><mml:msub><mml:mrow><mml:mi>K</mml:mi></mml:mrow><mml:mrow><mml:mi>i</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>,...
Wind turbine blades are easily struck by lightning, a phenomenon that has attracted more and attention in recent years. On this subject large current experiment was conducted on three typical blade sandwich structures to simulate the natural lightning-induced arc effects. The resulting damage different composite materials been compared: polyvinyl chloride (PVC) polyethylene terephthalate (PET) suffered pyrolysis cracks inside, while balsa wood fibers breaking off delamination between it...
Zhurong rover successfully landed on the southern of Utopia Planet Mars 15 May 2021. One laser-induced breakdown spectroscopy (LIBS) system, main payload Surface Composition Detector (MarSCoDe), was installed aimed to measure elements and their abundance in Martian regolith. Now, there are three sets LIBS system (ChemCam, SuperCam MarSCoDe) working at difference landing sites with diverse geologic features. For exploration, cross-validation is necessary expand model compatibility, test data...
With the rapid growth of usage social network, patterns, scales, and rate information exchange have brought profound impacts on research practice in finance. One important topic is stock market efficiency analysis. Traditional schemes finance focus identifying significant abnormal returns triggered by events. However, those events are merely identified regular financial announcements such as mergers, equity issuances, reports. Related data-driven approaches mainly developing trading...
High-resolution optical cameras have always been important scientific payloads in Mars exploration missions, and the topographic data produced by their detection can provide support for research on geomorphology geological structure evolution.As of December 2021, there are still relatively few high-resolution image at sub-meter level Martian surface, with about 2.6% global coverage even more limited stereo (just 0.4%).At same time, some difficulties acquisition terrain reconstruction...
Under the pulsed laser illumination, metal surface could melt and laser-supported-detonation (LSD) be created in plasma. The LSD may enable N + ions atoms plasma to move melting form nitride layer finally. • laser-supported detonation play a key role for nitriding. LSD-induced high-speed flow surface. main active state of nitrogen is inferred lifetime ∼ 10 2 ns prolonged at high pressures. propagation velocity shock waves drops as pressure increases. Pulsed nitriding metals has been regarded...
The level of automated unmanned surface vehicle is always dependent on human interactions. An collision avoidance approach proposed which based the visual system in order to improve it. Deep convolutional neural network (CNN) a popular deep for pattern recognition. Three types encounter scenes are created and recorded used as CNN training samples. maneuver operations these samples conforming COLREGs rules. can predict maneuvering operation according input scene crewman after CNN, central...
Networked control system is new hot-point in engineering. A delayed model for networked systems presented, based on which an LQR controller designed. method of delays estimation online also given. For the difficulty implementation NCSs with time-variant delays, Mamdani intelligent logic addressed. The stability Simulation results prove that novel can make stable and robustly preserve performance terms delays.