Results 31 to 40 of about 4,137,589 (389)

Projectile drag coefficient identification based on extreme learning

open access: yesAIP Advances, 2021
Aerodynamic parameters play a decisive role in the ballistic characteristics of the projectile. How to accurately obtain the aerodynamic parameters of the projectile is an important task in the development process of the projectile.
Zhendong Liang   +3 more
doaj   +1 more source

Transient Supersolid Properties in an Array of Dipolar Quantum Droplets [PDF]

open access: yesPhysical Review X, 2019
We study theoretically and experimentally the emergence of supersolid properties in a dipolar Bose-Einstein condensate. The theory reveals a ground state phase diagram with three distinct regimes - a regular Bose-Einstein condensate, incoherent and ...
F. Bottcher   +6 more
semanticscholar   +1 more source

Robust semicoherent searches for continuous gravitational waves with noise and signal models including hours to days long transients [PDF]

open access: yes, 2016
The vulnerability to single-detector instrumental artifacts in standard detection methods for long-duration quasimonochromatic gravitational waves from nonaxisymmetric rotating neutron stars [continuous waves (CWs)] was addressed in past work [D.
Keitel, David
core   +3 more sources

High-energy transients [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2013
We present an overview of high-energy transients in astrophysics, highlighting important advances over the past 50 years. We begin with early discoveries of γ-ray transients, and then delve into physical details associated with a variety of phenomena.
Gehrels, Neil, Cannizzo, John K.
openaire   +3 more sources

Design-Oriented Transient Stability Analysis of PLL-Synchronized Voltage-Source Converters [PDF]

open access: yesIEEE transactions on power electronics, 2018
Differing from synchronous generators, there are lack of physical laws governing the synchronization dynamics of voltage-source converters (VSCs). The widely used phase-locked loop (PLL) plays a critical role in maintaining the synchronism of current ...
Heng Wu, Xiongfei Wang
semanticscholar   +1 more source

Transient pseudohypoaldosteronism

open access: yesSrpski arhiv za celokupno lekarstvo, 2011
Introduction. Infants with urinary tract malformations (UTM) presenting with urinary tract infection (UTI) are prone to develop transient type 1 pseudohypoaldosteronism (THPA1). Objective. Report on patient series with characteristics of THPA1, UTM and/or UTI and suggestions for the diagnosis and therapy. Methods.
Stajić Nataša   +3 more
openaire   +3 more sources

Transient probing of the symmetry and the asymmetry of electron interference [PDF]

open access: yes, 2016
The transient processes of electron transport in nano-scale devices exhibit special phenomena that exist only in the transient regime. Besides how fast the steady states are approached, one interesting aspect of transient transport arises from its strong
Aharony, Amnon   +4 more
core   +2 more sources

Improved A* Algorithm for Path Planning of Spherical Robot Considering Energy Consumption

open access: yesSensors, 2023
Spherical robots have fully wrapped shells, which enables them to walk well on complex terrains, such as swamps, grasslands and deserts. At present, path planning algorithms for spherical robots mainly focus on finding the shortest path between the ...
Hao Ge   +5 more
doaj   +1 more source

Transient phenomena in ecology

open access: yesScience, 2018
Making sense of transient dynamics Ecological systems can switch between alternative dynamic states. For example, the species composition of the community can change or nutrient dynamics can shift, even if there is little or no change in underlying ...
A. Hastings   +9 more
semanticscholar   +1 more source

Moisture-triggered physically transient electronics [PDF]

open access: yes, 2017
Physically transient electronics, a form of electronics that can physically disappear in a controllable manner, is very promising for emerging applications.
Acar   +21 more
core   +1 more source

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