Results 1 to 10 of about 1,735,637 (367)

Structure-controlled asperities of the 1920 Haiyuan M8.5 and 1927 Gulang M8 earthquakes, NE Tibet, China, revealed by high-resolution seismic tomography

open access: yesScientific Reports, 2021
Detailed crustal structure of large earthquake source regions is of great significance for understanding the earthquake generation mechanism. Numerous large earthquakes have occurred in the NE Tibetan Plateau, including the 1920 Haiyuan M8.5 and 1927 ...
Quan Sun   +8 more
doaj   +1 more source

Research progress of Jiali fault activity

open access: yes地球与行星物理论评, 2021
The Jiali fault is a large strike-slip fault that traverses the southeast of the Tibetan Plateau. It played an important role as an adjustment fault for adjusting stress balance both before and after the collision of the Indian and Eurasian plates. Based
Hongru Li, Ling Bai, Huili Zhan
doaj   +1 more source

Decentralized non-communicating multiagent collision avoidance with deep reinforcement learning [PDF]

open access: yesIEEE International Conference on Robotics and Automation, 2016
Finding feasible, collision-free paths for multiagent systems can be challenging, particularly in non-communicating scenarios where each agent's intent (e.g. goal) is unobservable to the others.
Yu Fan Chen   +3 more
semanticscholar   +1 more source

Paleomagnetic and Chronologic Data Bearing on the Permian/Triassic Boundary Position of Qamdo in the Eastern Qiantang Terrane: Implications for the Closure of the Paleo‐Tethys

open access: yesGeophysical Research Letters, 2021
The tectonic evolution of the eastern Paleo‐Tethys in the Three‐Rivers headwater region remains uncertain, especially because of the lack of quality paleomagnetic data from the east Eastern Qiangtang Terrane (EQT).
Chong Guan   +10 more
doaj   +1 more source

Collision of the COVID-19 and Addiction Epidemics

open access: yesAnnals of Internal Medicine, 2020
People with substance use disorder may be especially susceptible to COVID-19, and compromised lung function from COVID-19 could also put at risk those who have opioid use disorder and methamphetamine use disorder.
N. Volkow
semanticscholar   +1 more source

Towards Optimally Decentralized Multi-Robot Collision Avoidance via Deep Reinforcement Learning [PDF]

open access: yesIEEE International Conference on Robotics and Automation, 2017
Developing a safe and efficient collision avoidance policy for multiple robots is challenging in the decentralized scenarios where each robot generates its paths without observing other robots' states and intents.
Pinxin Long   +5 more
semanticscholar   +1 more source

Unmanned Aerial Vehicles (UAVs): Collision Avoidance Systems and Approaches

open access: yesIEEE Access, 2020
Moving towards autonomy, unmanned vehicles rely heavily on state-of-the-art collision avoidance systems (CAS). A lot of work is being done to make the CAS as safe and reliable as possible, necessitating a comparative study of the recent work in this ...
J. Yasin   +5 more
semanticscholar   +1 more source

Optimization-Based Collision Avoidance [PDF]

open access: yesIEEE Transactions on Control Systems Technology, 2017
This article presents a novel method for exactly reformulating nondifferentiable collision avoidance constraints into smooth, differentiable constraints using strong duality of convex optimization.
Xiaojing Zhang   +2 more
semanticscholar   +1 more source

Identification of Key Nodes in Aircraft State Network Based on Complex Network Theory

open access: yesIEEE Access, 2019
With the development of aviation, the air traffic density in the terminal area is high and the traffic situation is relatively complex, which brings challenges to the flight deployment.
Wang Zekun, Wen Xiangxi, Wu Minggong
doaj   +1 more source

A Class of Collisions of Plane Impulsive Light--Like Signals in General Relativity [PDF]

open access: yes, 2002
We present a systematic study of collisions of homogeneous, plane--fronted, impulsive light--like signals which do not interact after head--on collision. For the head--on collision of two such signals, six real parameters are involved, three from each of
Barrabès C.   +5 more
core   +4 more sources

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