A5100603983- Wind Energy Research and Development
- Advanced Control Systems Optimization
- Energy Load and Power Forecasting
- Drilling and Well Engineering
- Advanced Neural Network Applications
- Smart Materials for Construction
- Icing and De-icing Technologies
- Spacecraft Design and Technology
- Coagulation and Flocculation Studies
- Control and Stability of Dynamical Systems
- Combustion and Detonation Processes
- Optical measurement and interference techniques
- Acoustic Wave Resonator Technologies
- Cryospheric studies and observations
- Electric Power System Optimization
- Tunneling and Rock Mechanics
- Fault Detection and Control Systems
- Minerals Flotation and Separation Techniques
- Geotechnical Engineering and Underground Structures
- Geotechnical and Geomechanical Engineering
- Advanced SAR Imaging Techniques
- Vestibular and auditory disorders
- Rocket and propulsion systems research
- Remote Sensing and LiDAR Applications
- Synthetic Aperture Radar (SAR) Applications and Techniques
Hohai University
2022
PLA Information Engineering University
2021
North China Electric Power University
2009-2020
Xi'an Railway Survey and Design Institute
2020
Harbin Institute of Technology
2016
Shanghai Jiao Tong University
2016
East China Normal University
2012
University of Illinois System
2011
Urbana University
2011
Beijing Institute of Technology
2008
There are limited studies on the semantic segmentation of high-resolution Polarimetric Synthetic Aperture Radar (PolSAR) images due to scarcity training data and inference speckle noises. The Gaofen contest has provided open access a high-quality PolSAR dataset. Taking this chance, we propose Multi-path ResNet (MP-ResNet) architecture for images. Compared conventional U-shape encoder-decoder convolutional neural network (CNN) architectures, MP-ResNet learns context with its parallel...
In this paper, the mesoscale damage properties of concrete and mortar were studied experimentally under Brazilian disc splitting tensile tests combining X-ray computed tomography (CT) digital image correlation (DIC) technology. Considering factors water/cement ratios loading rates, influence meso components on macro failure modes studied. The experimental results analysis indicate that following: (1) existence coarse aggregate makes strength lower than reduces sensitivity to rates; (2) discs...
The segmentation of cloud and snow in satellite images is a key step for subsequent image analysis, interpretation, other applications. In this paper, method based on deep convolutional neural network (DCNN) with enhanced encoder–decoder architecture—ED-CNN—is proposed. method, the atrous spatial pyramid pooling (ASPP) module used to enhance encoder, while decoder fusion features from different stages which improves accuracy. Comparative experiments show that proposed superior DeepLabV3+...
The effects of the blocking rate and shape obstacles on explosion characteristics methane/hydrogen at stoichiometric mixture were investigated using experimental facilities fabricated by ourselves. results demonstrate that there are similar trends in flame evolution structure obtained from all hydrogen fractions for same condition, i.e. increases as premixed propagation channel become more narrow; along with fraction, changes obstacle shape. Increasing fraction enhances maximum overpressure...
Abstract The state/output feedback topology required for bumpless transfer under controller uncertainty is considered. A steady‐state diagonal dominance condition a subsystem of this derived, which shown to be sufficient the existence stabilizing decentralized mismatch compensator parameters. Recent results on input/output gain structure one‐degree‐of‐freedom and two‐degrees‐of‐freedom infinite horizon LQ topologies are used show that applies generated by broad class controllers, thus...
Real-time pose estimation is a challenge in multi-camera vision system due to the demand of rapid response, high accuracy and robustness. Although some works based on have been proposed, few regarded as fixed integration, which easier apply real robotic application than eye-in-hand/eye-to-hand configuration. This paper proposes novel Kalman-filter-based algorithm for binocular camera that integration. Centralized fusion method employed conduct eye-to-hand camera. Extensive simulations are...
Piezoelectrets are a kind of space-charged electret material with void-structure. The piezoelectric effect in such is related its microstructure and space charge. In this paper the micro-structure polypropylene (PP) films first modified by using pressed gas expansion process to enhance charging capability films, then direct contact carried out polarize expanded films. relationship between applied voltage charge density, influence on performance PP investigated. Results show that for 100 m...
Rotary steerable systems (RSS) permit downhole directional control whilst continuously drilling in rotary mode. Rotary-steerable possess clear advantages both technologically and economically. The principle of the servo platform system was studied. A composed eccentric cam, dynamotors, axis electronic storehouse designed. inclination wells measured using acceleration sensors a gyroscopes sensor. Experiments results show that could keep itself stabilized has good controllable visible...
<p indent="0mm">The conditions of low temperature, weak sunlight, and low-density atmosphere on Mars pose severe challenges to the thermal control design verification Zhurong rover. The system adopts idea broadening sources incoming energy reducing expenditure. This is accomplished by an conversion storage based in-situ solar use combined with a nano-aerogel insulation system, which solves problems supply heat loss without nuclear source. has been verified analysis simulations. Low-pressure...
Modular design is an advanced method.Its core idea to divide the system into several modules according their functions.Through different combinations of modules, products varieties and specifications can be obtained.The overall planning modular very important whole system.If blindly carried out without or method improper, expected effect will not achieved it difficult respond quickly changes in market.Today's users need personalized diversified products, at same time, they want cost price as...
Control strategies and topological invariance of human prehension are discussed through the analysis comparison upper-limb reaching-grasping tasks. Five subjects were asked to perform different tasks with indices difficulty, movements captured using a Vicon 3D motion system. Topological was observed in trajectories task performances. After normalization, hand had very close patterns for Synergy control upper limbs also found among joint angles. Despite redundancy, angles can be fitted same...
Multibranched horizontal well is an important means to develop low permeability reservoirs. Fishbone multibranched has the advantages of increasing drainage area, reducing drilling number, utilizing existing wells, and saving oilfield development cost, especially for marginal exploitation. The morphological structure fishbone very complex, so numerical simulation study great significance guide production well. In this paper, model established in oil reservoir. finite element method used...
Femtosecond laser ablation has been demonstrated to be a versatile tool produce micro/nanoscale features with high precision and accuracy. However, the use of fluence increase efficiency usually results in unwanted effects, such as redeposition debris, formation recast layer heat-affected zone or around craters. Here we circumvent this limitation by exploiting thin frost thickness tens microns, which can directly formed condensation water vapor from air onto exposed surface whose temperature...
Abstract The water-guide bearing lubricating oil system of pumped storage unit is prone to dumping and spillage during the start-up unit, which seriously threatens safe stable operation unit. In this study, a three-dimensional unsteady numerical simulation performed investigate causes power plant based on VOF (volume fluid) multiphase flow model Realizable k-ε model. characteristics inside rotating basin pump-type Pitot tube process are analyzed. results demonstrate that change external can...