Results 21 to 30 of about 34,434 (155)
Field representation for optical defect resonances in multilayer microcavities using quasi-normal modes [PDF]
, 2008 Quasi-normal modes are used to characterize transmission resonances in 1D optical defect cavities and the related field approximations. We specialize to resonances inside the bandgap of the periodic multilayer mirrors that enclose the defect cavities ...
Groesen, E. van +2 more
core +3 more sources
Sensitivity analysis and parameter estimation for distributed hydrological modeling: potential of variational methods [PDF]
, 2009 Variational methods are widely used for the analysis and control of computationally intensive spatially distributed systems. In particular, the adjoint state method enables a very efficient calculation of the derivatives of an objective function ...
Castaings, William +3 more
core +5 more sources
Frontiers in Energy Research, 2023 Numerous studies show that it is reasonable and effective to apply decomposition technology to deal with the complex carbon price series. However, the existing research ignores the residual term containing complex information after applying single ...
Tingting Zhang, Zhenpeng Tang
doaj +1 more source
The Thouless theorem for matrix product states and subsequent post-density matrix renormalization group methods [PDF]
, 2013 The similarities between Hartree-Fock (HF) theory and the density-matrix renormalization group (DMRG) are explored. Both methods can be formulated as the variational optimization of a wave-function ansatz.
Chan, Garnet Kin-Lic +3 more
core +4 more sources
X-ray Pulsar Signal Denoising Based on Variational Mode Decomposition
Entropy, 2021 Pulsars, especially X-ray pulsars detectable for small-size detectors, are highly accurate natural clocks suggesting potential applications such as interplanetary navigation control.
Qiang Chen, Yong Zhao, Lixia Yan
doaj +1 more source
Sensors, 2016 In the condition monitoring of roller bearings, the measured signals are often compounded due to the unknown multi-vibration sources and complex transfer paths. Moreover, the sensors are limited in particular locations and numbers.
Gang Tang +4 more
doaj +1 more source
Post-Matrix Product State Methods: To tangent space and beyond [PDF]
, 2013 We develop in full detail the formalism of tangent states to the manifold of matrix product states, and show how they naturally appear in studying time-evolution, excitations and spectral functions.
Haegeman, Jutho +2 more
core +4 more sources
Applied Sciences, 2023 Because of the impact of the complex environment of tunnel portals, the measured blasting vibration signals in a tunnel portal contains a lot of high-frequency noise.
Ze Liu, Yaxiong Peng
doaj +1 more source
PLoS ONE, 2023 Parkinson's disease which is the second most prevalent neurodegenerative disorder in the United States is a serious and complex disease that may progress to mild cognitive impairment and dementia.
Madan Parajuli +2 more
doaj +1 more source
Kernel methods for detecting coherent structures in dynamical data
, 2019 We illustrate relationships between classical kernel-based dimensionality reduction techniques and eigendecompositions of empirical estimates of reproducing kernel Hilbert space (RKHS) operators associated with dynamical systems.
Husic, Brooke E. +3 more
core +1 more source