Results 11 to 20 of about 11,259,413 (243)

Modeling of Ship Collision Risk Index Based on Complex Plane and Its Realization [PDF]

open access: yesTransNav, 2016
Ship collision risk index is the basic and important concept in the domain of ship collision avoidance. In this paper, the advantages and deficiencies of the various calculation methods of ship collision risk index are pointed out.
Xiaoqin Xu, Xiaoqiao Geng, Yuanqiao Wen
doaj   +4 more sources

Collision Avoidance Method for Autonomous Ships Based on Modified Velocity Obstacle and Collision Risk Index

open access: yesJournal of Advanced Transportation, 2022
A novel real-time collision avoidance method for autonomous ships based on modified velocity obstacle (VO) algorithm and grey cloud model is proposed. A typical VO algorithm is used to judge whether there is a collision risk for ships in the potential ...
Ke Zhang   +6 more
doaj   +2 more sources

A Comprehensive Review of Ship Collision Risk Assessment and Safety Index Development

open access: yesSafety
Ship collision accidents remain a critical concern in maritime safety because of their potential to cause operational disruption as well as environmental and economic damage in areas with dense shipping activity. Complex traffic interactions, differences
Muhamad Imam Firdaus   +2 more
doaj   +2 more sources

Fuzzy Inference and Sequence Model-Based Collision Risk Prediction System for Stand-On Vessel

open access: yesSensors, 2022
Although the International Regulations for Preventing Collision at Sea (COLREGs) provide guidelines for determining the encounter relations between vessels and assessing collision risk, most collision accidents occur in crossing situations.
Ho Namgung, Sung-Wook Ohn
doaj   +2 more sources

Regional Collision Risk Prediction System at a Collision Area Considering Spatial Pattern

open access: yesJournal of Marine Science and Engineering, 2021
To reduce the risk of collision in territorial sea areas, including trade ports and entry waterways, and to enhance the safety and efficiency of ship passage, the International Maritime Organization requires the governing body of every country to ...
Ho Namgung, Joo-Sung Kim
doaj   +2 more sources

A Field Theory-Based Novel Algorithm for Navigational Hazard Index

open access: yesJournal of Marine Science and Engineering, 2023
Collision risk assessment is crucial for autonomous ships to identify risks and make decisions for collision avoidance. In this paper, a field theory-based navel algorithm is proposed to define and describe the risk of ship collision.
Yihua Liu, Yu Ma
doaj   +2 more sources

A Study on Multi-ship Avoidance System for Unmanned Surface Vehicles Using the Quaternion Ship Domain and Collision Risk Index

open access: yes한국해양공학회지
Collision avoidance is essential for the safe navigation of unmanned surface vehicles (USVs). This paper proposes a multi-ship collision avoidance algorithm that integrates the quaternion ship domain (QSD) and collision risk index (CRI) to assess ...
Dong-Hun Lee   +5 more
doaj   +2 more sources

Longitudinal collision risk for ATC track systems: a hazardous event model [PDF]

open access: yes, 2006
This paper presents a collision risk model and operational concepts for longitudinal separated aircraft in the North Atlantic Region air traffic control track system, and indicates how it might be used to reduce separation minima safely, and hence ...
Brooker, Peter
core   +7 more sources

Automatic collision avoidance of ships [PDF]

open access: yes, 2008
One of the key elements in automatic simulation of ship manoeuvring in confined waterways is route finding and collision avoidance. This paper presents a new practical method of automatic trajectory planning and collision avoidance based on an artificial
Lee, B.S., Han, D., Xue, Y.
core   +4 more sources

Increase in rear-end collision risk by acute stress-induced fatigue in on-road truck driving

open access: yesPLoS ONE, 2021
Increasing road crashes related to occupational drivers’ deteriorating health has become a social problem. To prevent road crashes, warnings and predictions of increased crash risk based on drivers’ conditions are important.
Shunsuke Minusa   +7 more
doaj   +2 more sources

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