Results 11 to 20 of about 185,420 (264)

Mixing material modes

open access: yesSPIE Proceedings, 2012
We present a novel setup in which real objects made of different materials can be mixed optically. For the materials we chose mutually very different materials, which we assume to represent canonical modes. The appearance of 3D objects consisting of any material can be described as linear superposition of 3D objects of different canonical materials, as
Sylvia C. Pont   +4 more
openaire   +4 more sources

EEMD Independent Extraction for Mixing Features of Rotating Machinery Reconstructed in Phase Space

open access: yesSensors, 2015
Empirical Mode Decomposition (EMD), due to its adaptive decomposition property for the non-linear and non-stationary signals, has been widely used in vibration analyses for rotating machinery.
Zaichao Ma, Guangrui Wen, Cheng Jiang
doaj   +1 more source

Estimation of Heart Rate and Respiratory Rate from PPG Signal Using Complementary Ensemble Empirical Mode Decomposition with both Independent Component Analysis and Non-Negative Matrix Factorization

open access: yesSensors, 2020
This paper proposes a framework combining the complementary ensemble empirical mode decomposition with both the independent component analysis and the non-negative matrix factorization for estimating both the heart rate and the respiratory rate from the ...
Ruisheng Lei   +3 more
doaj   +1 more source

Mixed mode matrix multiplication [PDF]

open access: yesProceedings. IEEE International Conference on Cluster Computing, 2003
In modern clustering environments where the memory hierarchy has many layers (distributed memory, shared memory layer, cache, ...), an important question is how to fully utilize all available resources and identify the most dominant layer in certain computation.
Wu, Meng-Shiou   +2 more
openaire   +1 more source

An improved genetic algorithm for optimizing ensemble empirical mode decomposition method

open access: yesSystems Science & Control Engineering, 2019
This paper proposes an improved ensemble empirical mode decomposition method based on genetic algorithm to solve the mode mixing problem in empirical mode decomposition (EMD) algorithm as well as the parameters selection issue in ensemble empirical mode ...
Dabin Zhang   +3 more
doaj   +1 more source

Frequency-Mixing Lasing Mode at European XFEL

open access: yesApplied Sciences, 2021
We demonstrate generation of X-ray Free-Electron Laser (XFEL) pulses in frequency mixing mode at the SASE3 line of the European XFEL. The majority of the SASE3 FEL segments are tuned at two frequencies ω1 and ω2 following an alternate pattern. Leveraging
Gianluca Geloni   +10 more
doaj   +1 more source

Orbital Angular Momentum (OAM) Mode Mixing in a Bent Step Index Fiber in Perturbation Theory: Multiple Bends

open access: yesIEEE Photonics Journal, 2020
In this article, we address the impact of multiple fiber bends on orbital angular momentum (OAM) mode propagation in a fiber. In particular, we extend the OAM mode-mixing due to a single-fiber bend studied earlier in detail for the step-index fiber, to ...
Ramesh Bhandari
doaj   +1 more source

Transverse-mode coupling effects in scanning cavity microscopy

open access: yesNew Journal of Physics, 2019
Tunable open-access Fabry–Pérot microcavities enable the combination of cavity enhancement with high resolution imaging. To assess the limits of this technique originating from background variations, we perform high-finesse scanning cavity microscopy of ...
Julia Benedikter   +4 more
doaj   +1 more source

Orbital Angular Momentum (OAM) Mode Mixing in a Bent Step Index Fiber in Perturbation Theory

open access: yesIEEE Photonics Journal, 2019
Within the framework of perturbation theory, we explore in detail the mixing of orbital angular momentum (OAM) modes due to a fiber bend in a step-index multimode fiber.
Ramesh Bhandari
doaj   +1 more source

Analysis of Vehicle Platform Vibration Based on Empirical Mode Decomposition

open access: yesShock and Vibration, 2021
Vehicle platform vibration (VPV) directly affects the measurement accuracy of precise measuring instrument (PMI) fixed on it. In order to reduce the influences of VPV on measurement accuracy, it is necessary to perform vibration isolation between vehicle
Chengwu Shen   +5 more
doaj   +1 more source

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