Results 21 to 30 of about 5,329,790 (237)

Time domain analysis of superradiant instability for the charged stringy black hole–mirror system

open access: yesPhysics Letters B, 2015
It has been proved that the charged stringy black holes are stable under the perturbations of massive charged scalar fields. However, superradiant instability can be generated by adding the mirror-like boundary condition to the composed system of charged
Ran Li   +3 more
doaj   +1 more source

Application of Coupled-Wave Wentzel-Kramers-Brillouin Approximation to Ground Penetrating Radar

open access: yesRemote Sensing, 2017
This paper deals with bistatic subsurface probing of a horizontally layered dielectric half-space by means of ultra-wideband electromagnetic waves. In particular, the main objective of this work is to present a new method for the solution of the two ...
Igor Prokopovich   +3 more
doaj   +1 more source

Time-domain parametric sensitivity analysis of multiconductor transmission lines [PDF]

open access: yes, 2011
We present a new parametric macromodeling technique for lossy and dispersive multiconductor transmission lines (MTLs). This technique can handle design parameters, such as substrate or geometrical layout features, and provide time-domain sensitivity ...
Antonini, G   +4 more
core   +2 more sources

In-Process Chatter Detection Using Signal Analysis in Frequency and Time-Frequency Domain

open access: yesMachines, 2021
All machining processes involve vibrations generated by structural sources such as a machine’s moving parts or by the interaction between cutting tools and work-pieces.
Michele Perrelli   +3 more
doaj   +1 more source

Frequency- and time-domain stochastic analysis of lossy and dispersive interconnects in a SPICE-like environment [PDF]

open access: yes, 2012
This paper presents an improvement of the state-of-the-art polynomial chaos (PC) modeling of high-speed interconnects with parameter uncertainties via SPICE-like tools.
Canavero, Flavio   +3 more
core   +1 more source

Polarization reversal and jump-like domain wall motion in stoichiometric LiTaO 3 produced by vapor transport equilibration [PDF]

open access: yes, 2012
The polarization reversal and domain structure evolution has been studied in stoichiometric lithium tantalate prepared by vapor transport equilibration process.
Akhmatkhanov, A. R.   +4 more
core   +1 more source

Modified HHT Method Usage for Vehicle Vibration Analysis in Time Domain

open access: yesCommunications, 2008
The paper deals with the analysis of vehicle vibrations in the time domain. The main aim is to modify the HHT-method for the solution of mechanical systems with nonlinear members.
Juraj Gerlici, Tomas Lack
doaj   +1 more source

Efficient Groundness Analysis in Prolog [PDF]

open access: yes, 2002
Boolean functions can be used to express the groundness of, and trace grounding dependencies between, program variables in (constraint) logic programs.
Howe, Jacob M., King, Andy
core   +4 more sources

Non-Local Effects in Brillouin Optical Time-Domain Analysis Sensors

open access: yesApplied Sciences, 2017
Brillouin optical time-domain analysis (BOTDA) sensors have great potential to provide distributed measurements of temperature and strain over large structures with high spatial resolution and measurement precision.
Haritz Iribas   +4 more
doaj   +1 more source

Co-movement of energy commodities revisited: Evidence from wavelet coherence analysis

open access: yes, 2012
In this paper, we contribute to the literature on energy market co-movement by studying its dynamics in the time-frequency domain. The novelty of our approach lies in the application of wavelet tools to commodity market data.
Barunik, Jozef, Vacha, Lukas
core   +1 more source

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