Safe hybrid-action reinforcement learning-based decision and control for discretionary lane change - Xu R, Xu J, Liu X, Lin Y.
Autonomous lane-change, a key feature of advanced driver-assistance systems, can enhance traffic efficiency and reduce the incidence of accidents. However, safe driving of autonomous vehicles remains challenging in complex environments. How to perform safe... (Source: SafetyLit)
Source: SafetyLit - April 16, 2024 Category: International Medicine & Public Health Tags: Engineering, Physics, Structural Soundness and Failure Source Type: news
Sampled-data cooperative adaptive cruise control for string-stable vehicle platooning with communication delays: a linear matrix inequality approach - Jang YH, Kim HS.
This study aims to propose a sampled-data control technique, utilizing a linear matrix inequality (LMI) approach, to achieve string-stable vehicle platooning in a cooperative adaptive cruise control (CACC) system with communication delays. To do this, a de... (Source: SafetyLit)
Source: SafetyLit - April 16, 2024 Category: International Medicine & Public Health Tags: Engineering, Physics, Structural Soundness and Failure Source Type: news
Severity assessment of sudden plunging motion for jet transport aircraft in response to severe atmospheric turbulence - Jiang W, Chang RC, Yang N, Xu Y.
PURPOSE The purpose of this paper is to present a comparative study of flight circumstances, dynamic stability characteristics and controllability for two transport aircraft in severe atmospheric turbulence at transonic cruise flight for the purpose to obt... (Source: SafetyLit)
Source: SafetyLit - April 16, 2024 Category: International Medicine & Public Health Tags: Engineering, Physics, Structural Soundness and Failure Source Type: news
Structure health inspection for aging transport aircraft - Jiang W, Chang RC, Zhang S, Zang S.
This study aims to present a diagnosis method to inspect the structure health for aging transport aircraft based on the postflight data in severe clear-air turbulence at transonic flight. The purpose of this method development is to assist certific... (Source: SafetyLit)
Source: SafetyLit - April 16, 2024 Category: International Medicine & Public Health Tags: Engineering, Physics, Structural Soundness and Failure Source Type: news
Study on dynamic damage of crash barrier under impact load of high-speed train - Qian K, Wang G, Ma H, Zeng H.
The derailment of a high-speed train in a tunnel will cause a very serious accident, but there are few research articles on anti-collision facilities in tunnels. In order to promote the sustainable development of high-speed trains and reduce the severity o... (Source: SafetyLit)
Source: SafetyLit - April 16, 2024 Category: International Medicine & Public Health Tags: Engineering, Physics, Structural Soundness and Failure Source Type: news
Pattern and distribution of injuries associated with road traffic accident in Haldwani (Nainital) - an autopsy based study - Hatwal* P, Devassy S, Bhaisora CP.
This study is focussed to find out the p... (Source: SafetyLit)
Source: SafetyLit - April 16, 2024 Category: International Medicine & Public Health Tags: Engineering, Physics, Structural Soundness and Failure Source Type: news
Reducing airline accident risk and saving lives: financial health, corporate governance, and aviation safety - Khadivar H, Murphy M, Walker T.
This study investigates the impact of financial health and corporate governance on aviation safety, aiming to fill a critical gap in existing research. The purpose of this study is to identify how these factors influence the safety records of airli... (Source: SafetyLit)
Source: SafetyLit - April 16, 2024 Category: International Medicine & Public Health Tags: Engineering, Physics, Structural Soundness and Failure Source Type: news
Adaptive terminal sliding mode trajectory tracking control for autonomous vehicles considering completely unknown parameters and unknown perturbation conditions - Feng C, Shen M, Wang Z, Wu H, Liang Z, Liang Z.
In the actual implementation of autonomous vehicle controller and related applications, it is difficult to obtain all the actual parameters of the vehicle. Considering factors such as uneven pavement and different pavement conditions, it is difficult to ac... (Source: SafetyLit)
Source: SafetyLit - April 16, 2024 Category: International Medicine & Public Health Tags: Engineering, Physics, Structural Soundness and Failure Source Type: news
An AI-driven system for identifying dangerous driving vehicles - Tanaka H, Shimomura K, Tanaka N, Ikeda M, Barolli L, Barolli L.
As the world faces aging population, traffic accidents caused by elderly drivers have become a social issue. The decline in driving skills and judgment can lead to deviation of vehicles from their lanes while they are in motion resulting in accidents. In t... (Source: SafetyLit)
Source: SafetyLit - April 16, 2024 Category: International Medicine & Public Health Tags: Engineering, Physics, Structural Soundness and Failure Source Type: news
Aviation risk prediction based on Prophet-LSTM hybrid algorithm - Su S, Sun Y, Zeng Y, Peng C.
PURPOSE The use of aviation incident data to carry out aviation risk prediction is of great significance for improving the initiative of accident prevention and reducing the occurrence of accidents. Because of the nonlinearity and periodicity of incident d... (Source: SafetyLit)
Source: SafetyLit - April 16, 2024 Category: International Medicine & Public Health Tags: Engineering, Physics, Structural Soundness and Failure Source Type: news
Collaborative misbehaviour response system for improving road safety - Chikh K, Shrivastav CS, Cavicchioli R.
This paper advocates for a proactive approach to traffic safety by introducing a collaborative Misbehaviour Response System (MBR) designed to preemptively address hazardous driving behaviours such as wrong-way driving and distracted driving. The system int... (Source: SafetyLit)
Source: SafetyLit - April 16, 2024 Category: International Medicine & Public Health Tags: Engineering, Physics, Structural Soundness and Failure Source Type: news
Discretionary lane-change decision and control via parameterized soft actor-critic for hybrid action space - Lin Y, Liu X, Zheng Z.
This study focuses on a crucial task in the field of autonomous driving, autonomous lane change. Autonomous lane change plays a pivotal role in improving traffic flow, alleviating driver burden, and reducing the risk of traffic accidents. However, due to t... (Source: SafetyLit)
Source: SafetyLit - April 16, 2024 Category: International Medicine & Public Health Tags: Engineering, Physics, Structural Soundness and Failure Source Type: news
Estimation of tire side-slip angles based on the frequency domain lateral acceleration characteristics inside tires - Tang Y, Tao L, Li Y, Zhang D, Zhang X.
The identification and control of tire side slip angle is the key to vehicle stability control. Intelligent tire technology based on the sensing of side-slip acceleration inside the tire provides a novel method for estimating the tire side-slip angle. This... (Source: SafetyLit)
Source: SafetyLit - April 16, 2024 Category: International Medicine & Public Health Tags: Engineering, Physics, Structural Soundness and Failure Source Type: news
The big idea: are we about to discover a new force of nature?
The wealth of emerging evidence suggest that physics may be on the brink of something bigModern physics deals with some truly mind-boggling extremes of scale. Cosmology reveals the Earth as a tiny dot amid an observable universe that is a staggering 93bn light years across. Meanwhile, today ’s particle colliders are exploring a microcosmic world billions of times smaller than the smallest atom.These two extremes, the biggest and smallest distances probed by science, are separated by 47 orders of magnitude. That ’s one with 47 zeros after it, a number so ludicrously huge that it isn’t worth trying to get your head aro...
Source: Guardian Unlimited Science - April 15, 2024 Category: Science Authors: Harry Cliff Tags: Physics Particle physics Gravity Cern Space Books Science Culture Source Type: news
IMV: Nuclear medicine procedure volumes decrease
Davin Korstjens of IMV Medical Information Division.Total nuclear medicine patient study volumes decreased by 5.7% between 2021 and 2023, with a 10.7% decrease in hospital-based studies and a 2.5% increase in nonhospital-based studies, according to the newly published IMV 2024 NM Market Outlook Report.
Two-year compound annual growth rates (CAGR) between 2021 and 2023 show an overall average 2.9% decrease in total procedures each year, with hospital-based procedures declining by 5.5% and non-hospital procedures increasing by 1.2%. Specifically considering cardiovascular nuclear medicine procedures, total procedures have d...
Source: AuntMinnie.com Headlines - April 15, 2024 Category: Radiology Authors: Davin Korstjens Tags: Nuclear Radiology Source Type: news
