A5100438046- Coastal and Marine Dynamics
- Geological formations and processes
- Coastal wetland ecosystem dynamics
- Antenna Design and Analysis
- Tropical and Extratropical Cyclones Research
- Advanced Clustering Algorithms Research
- Complex Network Analysis Techniques
- Geology and Paleoclimatology Research
- Data Mining Algorithms and Applications
- Geotechnical Engineering and Analysis
- Coastal and Marine Management
- Maritime and Coastal Archaeology
- Underwater Acoustics Research
- Energy Harvesting in Wireless Networks
- Metamaterials and Metasurfaces Applications
- Advanced Antenna and Metasurface Technologies
- Microwave Engineering and Waveguides
- COVID-19 epidemiological studies
- Geothermal Energy Systems and Applications
- Climate change and permafrost
- Data Management and Algorithms
- Geotechnical Engineering and Underground Structures
Guangdong Ocean University
2017-2023
Weifang University
2023
Kunming Medical University
2020
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 unreasonable setting of thermal insulation layer in high cold tunnels not only increases the maintenance cost tunnels, but also weakens anti-freezing and resistance tunnels. In order to optimize an Alpine tunnel, relying on Dabanshan tunnel Qinghai Province, three schemes radial longitudinal region were adopted, temperature field surrounding rock was numerically analyzed. results show that uneven scheme 9 cm-8 cm-7 cm 10 cm-9 can effectively reduce freezing area lining rock, at entrance...
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,...
Background: With the closure of Hubei Province on January 25, 2020, Chinese government divided program for control and prevention measures against COVID-19 into two parts: reinforcement medical resources diagnosis treatment in province reduction spread epidemic to outside Province. Methods: We collected 4,959 cases from eight districts China up February 13, analysed epidemiological characteristics. Findings: The median age was 46 years old, 46⋅7% were female. It is estimated that confirmed...
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...