Results 21 to 30 of about 1,235,540 (223)

Improvement and Analysis for Geo-fence Violation Detection Algorithm of Unmanned Aerial Vehicle

open access: yesHangkong gongcheng jinzhan, 2020
The core algorithm to prevent unmanned aerial vehicle(UAV)from flying out of the designated airspace or flying into the restricted airspace is the goe-fence violation detection algorithm of UAV.
XIE Dongcen   +4 more
doaj   +1 more source

Asymptotic preserving Implicit-Explicit Runge-Kutta methods for non linear kinetic equations [PDF]

open access: yes, 2012
We discuss Implicit-Explicit (IMEX) Runge Kutta methods which are particularly adapted to stiff kinetic equations of Boltzmann type. We consider both the case of easy invertible collision operators and the challenging case of Boltzmann collision ...
Dimarco, G., Pareschi, L.
core   +3 more sources

Probabilistic seismic hazard assessment of Nepal using multiple seismic source models

open access: yesEarth and Planetary Physics, 2018
The potential for devastating earthquakes in the Himalayan orogeny has long been recognized. The 2015 MW7.8 Gorkha, Nepal earthquake has heightened the likelihood that major earthquakes will occur along this orogenic belt in the future.
Md Moklesur Rahman, Ling Bai
doaj   +1 more source

Is the super-Penrose process possible near black holes? [PDF]

open access: yes, 2016
We consider collisions of particles near generic axially symmetric extremal black holes. We examine possibility of indefinitely large extraction of energy (the so-called super-Penrose process) in the limit when the point of collision approaches the ...
Zaslavskii, O. B.
core   +3 more sources

High‐resolution seismic tomography of the 2015 Mw7.8 Gorkha earthquake, Nepal: Evidence for the crustal tearing of the Himalayan rift

open access: yesGeophysical Research Letters, 2016
The Mw7.8 Gorkha earthquake struck Nepal and ruptured the boundary between the Indian and Eurasian plates. We conducted 2‐D Pg wave tomography to clarify the seismogenic structure and try to understand causal mechanisms for this large earthquake, using ...
Shunping Pei   +4 more
doaj   +1 more source

Time-Varying Formation Control for Second-Order Discrete-Time Multi-Agent Systems With Directed Topology and Communication Delay

open access: yesIEEE Access, 2019
Time-varying formation control protocol design and analysis problems for the second-order discrete-time multi-agent systems with directed interaction topology and communication delay are investigated.
Lyulong He   +4 more
doaj   +1 more source

Towards a Collision-Free WLAN: Dynamic Parameter Adjustment in CSMA/E2CA [PDF]

open access: yes, 2010
Carrier Sense Multiple Access with Enhanced Collision Avoidance (CSMA/ECA) is a distributed MAC protocol that allows collision-free access to the medium in WLAN.
Barcelo, Jaume   +5 more
core   +3 more sources

Thermal–Electrical–Mechanical Coupled Finite Element Models for Battery Electric Vehicle

open access: yesMachines
The safety of lithium-ion batteries is critical to the safety of battery electric vehicles (BEVs). The purpose of this work is to develop a method to predict battery thermal runaway in full electric vehicle crash simulation.
Chenxi Ling   +3 more
doaj   +1 more source

Radiometric K/ag data as evidence of the geodynamic evolution of the Ždraljica ophiolitic complex, central Serbia [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2005
The study presents age data and petrologic characteristics of igneous rocks of the Ždraljica ophiolitic complex (ŽOC), situated in central Serbia, 150 km south of Belgrade.
Resimić-Šarić Kristina   +2 more
doaj   +1 more source

DECREASING THE RA COLLISION IMPACT FOR MASSIVE NB-IOT IN 5G WIRELESS NETWORKS

open access: yesJordanian Journal of Computers and Information Technology, 2021
To satisfy the gigantic need for Internet of things (IoT) applications, the third-generation partnership project (3GPP) has revealed the narrowband IoT (NB-IoT) standard. In any case, collisions in the radio access channel of NB-IoT can be extreme due to
Bilal Rabah Al-Doori, Ahmed Zurfi
doaj   +1 more source

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