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The increasing importance of hydraulic hubs has grown in parallel with the rapid expansion of the global economy. However, the intensified utilization of hub waters has also elevated the associated risks. In particular, the loss of control of a vessel within these waters can pose significant threats to both infrastructure and the operational stability of hydraulic hubs. Preventing collisions between ships and hydraulic hubs has therefore become a critical issue for safeguarding navigational facilities in such environments. This study develops a probabilistic model to calculate the collision probability of vessels within hydraulic hubs, using the Monte Carlo algorithm and the MMG (Mathematical Modeling Group) method. By simulating the motion trajectories of ships following main engine failure across various operational scenarios, the model incorporates the unique characteristics of hydraulic hubs. A case study of the Poyang Lake Hydraulic Hub is conducted to validate the performance of the proposed algorithm. The results indicate that strategically deploying anti-collision facilities at the mooring piers of the hydraulic hub can significantly reduce the likelihood of ship collisions with navigational infrastructure in the event of main engine failure. These findings provide valuable insights into the optimal design, placement, and integration of anti-collision measures, navigational aids, safety signage, and related facilities within hydraulic hubs. The implementation of these recommendations has the potential to substantially enhance the safety and operational efficiency of ships navigating Hydraulic hub waters.
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http://dx.doi.org/10.1016/j.aap.2025.107987 | DOI Listing |
Water Res
August 2025
Economics Group, Loughborough Business School, Loughborough University, Loughborough, LE11 3TU, United Kingdom. Electronic address:
Rational planning is essential for infrastructure transitions in network industries due to the substantial investment costs involved. This study evaluates the economic feasibility of transitioning to a centralised wastewater treatment paradigm. We propose a hybrid Wastewater Infrastructure Transition Optimisation and Evaluation (WWITOE) framework that integrates mathematical optimisation and Cost-Benefit Analysis (CBA), explicitly accounting for geographic, topographic, and hydraulic cost uncertainties.
View Article and Find Full Text PDFAccid Anal Prev
June 2025
School of Navigation, Wuhan University of Technology, Wuhan, China; Hubei Key Laboratory of Inland Shipping Technology, Wuhan, China. Electronic address:
The increasing importance of hydraulic hubs has grown in parallel with the rapid expansion of the global economy. However, the intensified utilization of hub waters has also elevated the associated risks. In particular, the loss of control of a vessel within these waters can pose significant threats to both infrastructure and the operational stability of hydraulic hubs.
View Article and Find Full Text PDFEnviron Res
December 2024
State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China. Electronic address:
Chemosphere
August 2023
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China. Electronic address:
Discovering the complexity and improving the stability of microbial networks in urban rivers affected by combined sewer overflows (CSOs) is essential for restoring the ecological functions of urban rivers, especially to improve their ability to resist CSO impacts. In this study, the effects of sediment remediation on the complexity and stability of microbial networks was investigated. The results revealed that the restored microbial community structure using different approaches in the river sediments differed significantly, and random matrix theory showed that sediment remediation significantly affected microbial networks and topological properties; the average path distance, average clustering coefficient, connectedness, and other network topological properties positively correlated with remediation time and weakened the small-world characteristics of the original microbial networks.
View Article and Find Full Text PDFSensors (Basel)
February 2022
School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, China.
Ventricular assist devices or total artificial hearts can be used to save patients with heart failure when there are no donors available for heart transplantation. Blood pumps are integral parts of such devices, but traditional axial flow blood pumps have several shortcomings. In particular, they cause hemolysis and thrombosis due to the mechanical contact and wear of the bearings, and they cause blood stagnation due to the separation of the front and rear guide wheel hubs and the impeller hub.
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