Results 261 to 270 of about 288,536 (295)

Collision Risk Modelling

1999
The most frequent collisions i.e., contacts between offshore supply vessels and the platform to which they are delivering supplies, generally cause only minor damage, although significant impacts have been reported in rare cases. Impact from external, non-platform related vessels is probably the most location dependent hazard.
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Fuzzy evaluation on collision risk

2008 7th World Congress on Intelligent Control and Automation, 2008
To investigate the safety of route flight in air traffic management, the collision risk is evaluated with the fuzzy sets theory. The new fuzzy evaluation method shows how the communication, navigation, surveillance, operation error, and traffic density influence the risk of collision in the parallel routes. The results demonstrate that fuzzy evaluation
null Dongbin Li, null Xiong Li, null Xiaohao Xu   +2 more
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Bayesian eagle collision risk

2020
This project contains data and code used to analyze the behavior of the collision risk model used by the U.S. Fish & Wildlife Service to predict the number of Bald and Golden eagles that will be killed at proposed wind energy facilities. These predicted fatalities determine the amount of off-site mitigation required to obtain a permit exempting the
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Collision risk assessment for ships

Journal of Marine Science and Technology, 2010
Efficient maritime navigation through dynamic obstructions at close range is still a serious issue faced by mariners. There have been studies focusing on collision risk assessment in the past, but the majority were based on the first person perspective, with area-based ship domain concepts that are defined around either the ownship or the obstacle ...
CheeKuang Tam, Richard Bucknall
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An assessment of CubeSat collision risk [PDF]

, 2014
In their 2011 paper, Oltrogge and Leveque encouraged the CubeSat community to take leadership roles in space debris assessment, ensuring that debris guidelines and standards are met and by implementing effective debris mitigation strategies. However, common misconceptions about the role of CubeSats in the evolution of the space debris environment ...
Lewis, H.G., Schwarz, B., George, S., Stokes, H.   +3 more
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Ship Collision Avoidance Timing Based on Subjective Collision Risk

2018 3rd IEEE International Conference on Intelligent Transportation Engineering (ICITE), 2018
In order to reduce ship collision and promote the safety of navigation. We investigate the fuzzy relational between various factors and the timing of collision avoidance of ships combined with the collision risk, and a method for determining the timing of ship collision avoidance is proposed.
Qin Ke, Bu Renxiang, Liu Yong, Ding Kaige   +3 more
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The Calculation of Marine Collision Risks

Journal of Navigation, 1985
It has been recognized for some time that calculations of potential encounter rates based on the speed and lateral distributions of ships using sea routes provide only a partial estimation of the actual collision risk, as all encounters are usually given equal rating, and no attempt is made to include factors such as the degree of domain penetration or
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An Airspace Collision Risk Simulator for Safety Assessment

2019 Winter Simulation Conference (WSC), 2019
Modelling the spatio-temporal dynamics and evolution of collision risk in an airspace is critical for multiple purposes. First, the model could be used to diagnose the critical points where the level of risk has escalated due to particular airspace configurations and/or events.
Jiangjun Tang, Hussein A. Abbass, Sameer Alam   +2 more
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Time to Collision and Collision Risk Estimation from Local Scale and Motion

2011
Computer-vision based collision risk assessment is important in collision detection and obstacle avoidance tasks. We present an approach to determine both time to collision (TTC) and collision risk for semi-rigid obstacles from videos obtained with an uncalibrated camera. TTC for a body moving relative to the camera can be calculated using the ratio of
Shrinivas J. Pundlik, Eli Peli, Gang Luo 0003   +2 more
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Collision Sports and Risk of Bleeding in Children With Hemophilia

JAMA, 2012
IN THIS ISSUE OF JAMA, BRODERICK AND COLLEAGUES 1 report results of their study of the association of vigorous sports with bleeding rate in 104 children and adolescents with moderate or severe hemophilia. Most participants were receiving prophylactic infusions of replacement clotting factor, which has been established as the standard of care for ...
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