A5089996130- Coastal and Marine Dynamics
- Coastal wetland ecosystem dynamics
- Tropical and Extratropical Cyclones Research
- Antenna Design and Analysis
- Metamaterials and Metasurfaces Applications
- Advanced Clustering Algorithms Research
- Advanced Antenna and Metasurface Technologies
- Complex Network Analysis Techniques
- Computational Physics and Python Applications
- Aeolian processes and effects
- Water Quality Monitoring Technologies
- Data Mining Algorithms and Applications
- Microwave Engineering and Waveguides
- Maritime and Coastal Archaeology
- Energy Harvesting in Wireless Networks
- Underwater Acoustics Research
- Hydrological Forecasting Using AI
- Coastal and Marine Management
- Ocean Waves and Remote Sensing
- Geotechnical Engineering and Underground Structures
- Data Management and Algorithms
- Traffic Prediction and Management Techniques
- Microplastics and Plastic Pollution
Guangdong Ocean University
2021-2025
Through comprehensive research on the working principles of generalized Snell’s law, this paper presents a quasi-metasurface based theory wavefront difference. The proposed structure successfully demonstrates vortex manipulation both linearly polarized waves and circularly waves. symmetrical metallic column design modulates phase one period at 18 GHz with reflection loss less than −0.5 dB. By decomposing into set mutually orthogonal difference π/2, simple synthesis method is to convert...
Rip currents form on beaches worldwide and pose a potential safety hazard for beach visitors. Therefore, effectively identifying rip from scenes providing real-time alerts to managers beachgoers is crucial. In this study, the YOLO-Rip model was proposed detect current targets based popular deep learning techniques. First, characteristics of large target size in images, neck region YOLOv5s streamlined. The 80 × feature map branches suitable detecting small were removed reduce number...
Among many coastal hazards, rip currents have gradually become one of the most noticeable hazards. Studies demonstrated that drowning accidents at beaches around world are related to currents. In this study, online and field questionnaires were combined for first time reveal beachgoers’ awareness in China from four aspects: demographic characteristics, swimming ability, information about visiting beaches, knowledge One educational strategy was introduced survey. The results suggest (i)...
The coasts of Guangdong-Hong Kong-Macao Greater Bay Area (GBA) are facing threats and challenges from rising sea levels, frequent extreme events human intervention. In this study, the Coastal Hazard Wheel (CHW) was used to classify GBA, assess its hazard change 2010 2020, identify hazards hotspots explore available coastal management options. results show that types GBA in 2020 consistent, with delta/low estuary island hard rock slope as main types. is vulnerable ecosystem disruption,...
The study of post-storm beach recovery is important for economic development and the protection life in coastal areas. In this study, field observations were conducted 21 days surf zone Dongdao Beach, Hailing Island, China, after tropical storm “Cempaka”. Data on depth, wave, Eulerian velocity, sediment, three-dimensional topography beach, high-frequency variations bed-level elevation collected. results showed that experienced medium- to low- medium-energy waves during covered two complete...
Because of the potential threats it presents to marine ecosystems and human health, beach litter is becoming a major global environmental issue. The traditional manual sampling survey poor in real-time, effect, limited detection area, so extremely difficult quickly clean up recycle litter. Deep learning technology advancing, opening new method for monitoring A QSB-YOLO approach based on improved YOLOv7 proposed problem missed false detection. First, combined with quantization-friendly...
The DBSCAN algorithm can discover clusters of arbitrary shapes, but it has difficulty in predicting the appropriate clustering parameters. In this study, data field is introduced into number space, and relative mass (RM) calculation method proposed, first N points with larger dataset are calculated as initial by RM algorithm. Then optimized influence factor sigma used to calculate force range radius achieve optimization parameter, so select addition, study improves efficiency computing large...
A mixed matching circuit for miniaturizing dual-band antenna is introduced and verified in this paper. According to the allocations on Smith chart, two L-shaped miniaturization are cascaded interpret theory of operation. formula deduced based a bidirectional track from certain position origin point chart. Furthermore, taken as an example illustrate performance novel approach miniaturization. The occupation can be reduced by quarter at simultaneous operational frequencies 2.4 5.8 GHz....
Among all the clustering problems, K-means is probably most well-known one. To address problem that traditional algorithm selects centroids randomly and leads to unstable results easy fall into local optimal solutions, we introduce data field number space by borrowing idea of inter-particle interaction in physical field, study gravitational relationship between points influence factor propose relative mass based on which referred as RM following. In with larger masses are calculated selected...