Results 51 to 60 of about 288,536 (295)

A method for unmanned vessel autonomous collision avoidance based on model predictive control

open access: yesSystems Science & Control Engineering, 2021
Aiming at the problem of autonomous collision avoidance of unmanned vessels in the case of multiple vessels encountering at sea, this paper proposes a method for collision avoidance of vessels in open water based on the Mathematical Model Group (MMG ...
Shengwei Xing, Hongwei Xie, Wenjun Zhang
doaj   +1 more source

Ship Autonomous Collision-Avoidance Strategies—A Comprehensive Review

open access: yesJournal of Marine Science and Engineering, 2023
Autonomous decision-making for ships to avoid collision is core to the autonomous navigation of intelligent ships. In recent years, related research has shown explosive growth.
Hongguang Lyu   +8 more
doaj   +1 more source

Moment-Sum-Of-Squares Approach For Fast Risk Estimation In Uncertain Environments

open access: yes, 2018
In this paper, we address the risk estimation problem where one aims at estimating the probability of violation of safety constraints for a robot in the presence of bounded uncertainties with arbitrary probability distributions.
Hofmann, Andreas   +2 more
core   +1 more source

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann   +3 more
wiley   +1 more source

Urban Air Mobility Aircraft Operations in Urban Environments: A Review of Potential Safety Risks

open access: yesAerospace
The expansion of Urban Air Mobility (UAM) has led to diverse aircraft designs, with piloted systems expected to evolve into remotely piloted and automated operations.
Chananya Charnsethikul   +3 more
doaj   +1 more source

Safety distance awareness system for Malaysian Driver [PDF]

open access: yes, 2013
It is known that the risk of an accident increases exponentially with the speed of the vehicle and most collisions happen when the driver fails to brake at the required time and distance.
Pandak Jabo, Nurul Izzati
core  

Numerical Modeling of Tank Cars Carrying Hazardous Materials With and Without Composite Metal Foam

open access: yesAdvanced Engineering Materials, EarlyView.
Large‐scale puncture models consisting of hazardous materials (HAZMATs) tank car with protective steel–steel composite metal foam (S–S CMF) are solved numerically. Tank car plate with added 10.91–13.33 mm thick S–S CMF layer does not puncture. Protective S–S CMF absorbs impact energy, reduces plate deformation, and prevents shear bands formation ...
Aman Kaushik, Afsaneh Rabiei
wiley   +1 more source

Probabilistic Grid-based Collision Risk Prediction for Driving Application [PDF]

open access: yes, 2014
International audienceIn the recent years, more and more modern cars have been equipped with perception capabilities. One of the key applications of such perception systems is the estimation of a risk of collision.
Anna Petrovskaya   +5 more
core   +2 more sources

Reducing the risk of collision of vehicles

open access: yesNauchno-tekhnicheskiy vestnik Bryanskogo gosudarstvennogo universiteta, 2017
In order to clarify the method of determining the value of the braking distance to determine the maximum deceleration of the vehicle by braking all wheels ATS when using the differential equation of motion of the car was removed dependence, which more precisely characterizes the size of tor brake way. Approximation of existing dependencies, obtained by
Sukhov S.S.   +3 more
openaire   +2 more sources

Workflow for Design of Experiments‐Based Modeling of Species Transport and Growth Kinetics in GaN Hydride Vapor Phase Epitaxy

open access: yesAdvanced Engineering Materials, EarlyView.
A novel workflow for investigating hydride vapor phase epitaxy for GaN bulk crystal growth is proposed. It combines Design of experiments (DoE) with physical simulations of mass transport and crystal growth kinetics, serving as an intermediate step between DoE and experiments.
J. Tomkovič   +7 more
wiley   +1 more source

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