A5011593525- Ultra-Wideband Communications Technology
- Geomechanics and Mining Engineering
- Coal Properties and Utilization
- Indoor and Outdoor Localization Technologies
- Geoscience and Mining Technology
- Speech and Audio Processing
- Microwave Imaging and Scattering Analysis
- Economic Development and Regional Competitiveness
- Economic Growth and Productivity
- Heavy metals in environment
- Educational Technology and Pedagogy
- Ocean Waves and Remote Sensing
- Winter Sports Injuries and Performance
- Evaluation and Optimization Models
- Precipitation Measurement and Analysis
- Speech Recognition and Synthesis
- Music and Audio Processing
- Multimedia Communication and Technology
- 3D Surveying and Cultural Heritage
- Geophysical and Geoelectrical Methods
- Business and Economic Development
- Hydrocarbon exploration and reservoir analysis
- Soil Moisture and Remote Sensing
- Speech and dialogue systems
- Advanced Data Compression Techniques
China University of Mining and Technology
2013-2023
China National Petroleum Corporation (China)
2021
Chang Hua Hospital
2004
World Wide Web Consortium
2000-2002
Due to the strong penetration ability and high transmission rate of ultra-wideband (UWB) signals, UWB technology plays a very significant role in field precise indoor positioning. However, harsh volatile environment leads non-line-of-sight (NLOS) propagation severe attenuation which may generate ranging positioning errors. To mitigate NLOS effect improve accuracy, existing methods use information channel impulse response (CIR) identify signal channels. these identification often require...
This report describes the submission of DKU-DukeECE-Lenovo team to VoxCeleb Speaker Recognition Challenge (VoxSRC) 2021 track 4. Our system including a voice activity detection (VAD) model, speaker embedding two clustering-based diarization systems with different similarity measurements, overlapped speech (OSD) models, and target-speaker (TS-VAD) model. final submission, consisting 5 independent systems, achieves DER 5.07% on challenge test set.
Ultra-wideband (UWB) is a very promising indoor wireless positioning technology. However, in the harsh and volatile environment, propagation of UWB signals vulnerable to non-line-of-sight (NLOS) conditions, contaminated range measurements will degrade accuracy for localization. Therefore, it necessary identify LOS/NLOS. Recent studies mainly focus on identification signal conditions by using channel impulse response (CIR) or extracted statistical features. these usually only specific...
Fracture porosity is one of the key parameters for characterizing fractured reservoirs. However, fracture calculation difficult with conventional logging data due to severe anisotropy To deal problem, equivalent macroscopic anisotropic formation model based on dual laterolog (DLL) adopted cyclically assign such as bedrock resistivity (RB), fluid in fractures (RFL), dip angle (FDA) and thickness well spacing, produce massive modeling. A large number training obtained through three dimensional...
Using data analysis and comparative analysis, the distribution of Coalbed methane (CBM) gas content in southern Junggar were analyzed on basis Basin coalfield geological data, main controlling factors CBM accumulation studied. The results show that, Gas ranges from 2cm 3 /g to 15cm /g, which overall is highest central eastern becomes progressively smaller trend westward. study area has many characteristics, such as Multi-seam, large coal seam thickness, mainly Fine-grained clastic rock,...
Based on the coal reservoirs geological feature and coalbed methane (CBM) wells production data, taken FS-2 well in southern Junggar Basin as examples, history matching productivity prediction of were conducted by using COMET3 numerical modeling software influence factors sensitivity gas study area analyzed. The results suggest: total eight years was 2915007 m 3 , average daily reached 1209.5m /d, CBM belongs to medium well. Permeability content has most effect single area, so fracture...
The collaborative mapping of multiple-unmanned systems has been widely used in many fields such as national defense, digital mines, and smart cities. As a positioning device that unmanned rely heavily on outdoor environments, intermittent denial INS/GNSS will occur, which affects the accuracy mapping. This paper proposes multi-unmanned system map fusion algorithm based lidar point cloud registration, mainly includes preprocessing, coarse fine registration fusion. At initial moment mapping,...