The Experts below are selected from a list of 285 Experts worldwide ranked by ideXlab platform
Milan Markovic - One of the best experts on this subject based on the ideXlab platform.
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Robust Recursive AR speech analysis based on quadratic classifier with sliding training data set and a heuristic decision threshold
2000 10th European Signal Processing Conference, 2000Co-Authors: Milan MarkovicAbstract:A robust Recursive Procedure for identification of nonstationary AR speech model based on a quadratic classifier with a heuristic decision threshold is proposed and evaluated. A comparative experimental analysis is done through processing natural speech signal with voiced and mixed excitation segments. Obtained results show that the proposed robust Procedure based on the quadratic classifier with sliding training data set and the heuristic decision threshold achieves more accurate AR speech parameter estimation and provides improved tracking performance.
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On determining heuristically decision threshold in robust AR speech model identification Procedure based on quadratic classifier
ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359), 1999Co-Authors: Milan MarkovicAbstract:In this work, a robust Recursive Procedure for identification of a nonstationary AR speech model based on a frame-based quadratic classifier with heuristically decision threshold is considered. A novel heuristically decision threshold is proposed and its efficiency is compared to the previously defined heuristically thresholds through analyzing natural speech signal with voiced and mixed excitation segments. Obtained results show that the considered robust Procedure with the proposed heuristically decision threshold achieves more accurate AR speech parameter estimation and provides improved tracking performance.
M. Pastorino - One of the best experts on this subject based on the ideXlab platform.
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Electromagnetic inverse scattering of axially moving elliptic targets
2013 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2013Co-Authors: M. Pastorino, Mirco Raffetto, A. RandazzoAbstract:This paper shows that inverse scattering techniques can be successfully used to find the geometrical and constitutive parameters and the velocities of axially moving, inhomogeneous cylinders. For this reason, these techniques could be of interest in industrial applications or in plasma physics. In particular, the forward problem is solved by generalizing a semi-analytical Recursive Procedure developed for the computation of the field scattered by multilayer elliptic cylinders. The inverse problem is addressed by using a stochastic method based on the Artificial Bee Colony algorithm.
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Interactions between electromagnetic waves and elliptically shaped metamaterials
IEEE Antennas and Wireless Propagation Letters, 2005Co-Authors: M. Pastorino, M. Raffetto, A. RandazzoAbstract:The interaction between plane waves and multilayer elliptic cylinders with one or more layers made of metamaterials is considered. An analytical solution is proposed, which extends to double-negative metamaterials an efficient Recursive Procedure previously developed for double-positive dielectrics. Two cases are considered: multilayer dielectric cylinders and perfectly conducting cylinders with a lossy dielectric coating. Numerical results and comparisons are provided concerning both the internal field and the scattering cross section per unit length, allowing a significant assessment of the scattering properties of metamaterials.
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Scattering by multilayer isorefractive elliptic cylinders
IEEE Transactions on Antennas and Propagation, 2004Co-Authors: S. Caorsi, M. PastorinoAbstract:An analytical solution to the plane-wave electromagnetic scattering by multilayer elliptic cylinders is derived in the case of isorefractive materials. For these materials, a Recursive solution similar to the solution for the multilayer circular cylinder is obtained. Moreover, it will be shown that the matrix-based Recursive Procedure for common dielectrics reduces to the present solution in this particular case. Finally, a number of numerical examples and comparisons will be provided.
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Electromagnetic scattering by a multilayer elliptic cylinder under transverse-magnetic illumination: series solution in terms of Mathieu functions
IEEE Transactions on Antennas and Propagation, 1997Co-Authors: S. Caorsi, M. Pastorino, Mirco RaffettoAbstract:An exact solution to the electromagnetic scattering by a dielectric multilayer infinite cylinder of elliptic cross section is proposed. The interfaces between different media, which are assumed to be lossless and nonmagnetic, are confocal elliptic cylinders. Starting from the series expansions in terms of Mathieu functions, an efficient Recursive Procedure for the computation of fields and radar cross sections per unit length under a transverse-magnetic illumination is developed. The mathematical formulation is detailed and some numerical results are provided.
Mirco Raffetto - One of the best experts on this subject based on the ideXlab platform.
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Scattering of Electromagnetic Waves From a Multilayer Elliptic Cylinder Moving in the Axial Direction
IEEE Transactions on Antennas and Propagation, 2013Co-Authors: Matteo Pastorino, Mirco RaffettoAbstract:A new exact solution to the problem of scattering of electromagnetic waves from multilayer elliptic cylinders moving in the axial direction is proposed. The homogeneous media of the different layers are assumed to be linear and isotropic in their rest frames. All media that are not at rest with respect to the host medium are, moreover, supposed to have an electric conductivity equal to zero (in their rest frames). Starting from the fact that a moving medium can be treated as a stationary bianisotropic one, we deduce the series expansions in terms of Mathieu functions for the electromagnetic fields in the different layers. Then, an efficient Recursive Procedure for the computation of the solutions is developed. Some numerical results show the reliability of the solution and the efficiency of the Recursive Procedure proposed.
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Electromagnetic inverse scattering of axially moving elliptic targets
2013 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2013Co-Authors: M. Pastorino, Mirco Raffetto, A. RandazzoAbstract:This paper shows that inverse scattering techniques can be successfully used to find the geometrical and constitutive parameters and the velocities of axially moving, inhomogeneous cylinders. For this reason, these techniques could be of interest in industrial applications or in plasma physics. In particular, the forward problem is solved by generalizing a semi-analytical Recursive Procedure developed for the computation of the field scattered by multilayer elliptic cylinders. The inverse problem is addressed by using a stochastic method based on the Artificial Bee Colony algorithm.
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Electromagnetic scattering by a multilayer elliptic cylinder under transverse-magnetic illumination: series solution in terms of Mathieu functions
IEEE Transactions on Antennas and Propagation, 1997Co-Authors: S. Caorsi, M. Pastorino, Mirco RaffettoAbstract:An exact solution to the electromagnetic scattering by a dielectric multilayer infinite cylinder of elliptic cross section is proposed. The interfaces between different media, which are assumed to be lossless and nonmagnetic, are confocal elliptic cylinders. Starting from the series expansions in terms of Mathieu functions, an efficient Recursive Procedure for the computation of fields and radar cross sections per unit length under a transverse-magnetic illumination is developed. The mathematical formulation is detailed and some numerical results are provided.
Jingshan Li - One of the best experts on this subject based on the ideXlab platform.
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Approximate Analysis of Reentrant Lines With Bernoulli Reliability Model
IEEE Transactions on Automation Science and Engineering, 2010Co-Authors: Chong Wang, Jingshan LiAbstract:Reentrant lines are widely used in many manufacturing systems. In this paper, we present an iterative method to approximate the performance of reentrant lines with Bernoulli reliability model under last buffer first serve (LBFS) scheduling policy. Recursive Procedure to estimate the production rates of reentrant lines is developed. A case study of an automotive ignition component line with reentrant washing operations is introduced to illustrate the applicability of the method.
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Modeling and analysis of manufacturing systems with parallel lines
IEEE Transactions on Automatic Control, 2004Co-Authors: Jingshan LiAbstract:This note is devoted to the study of manufacturing systems with parallel production lines. By using overlapping decomposition method, a convergent Recursive Procedure is presented to estimate system production rate with high accuracy. The results obtained are illustrated by a case study at an automotive assembly plant.
Yuqiang Wu - One of the best experts on this subject based on the ideXlab platform.
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Output feedback stabilization of nonholonomic systems with unmeasured dynamics and nonlinear drifts
2012 24th Chinese Control and Decision Conference (CCDC), 2012Co-Authors: Yan Zhao, Yuqiang WuAbstract:This paper investigates the output feedback stabilization problem for a class of nonholonomic systems whose nonlinear drifts are composed of both the unmeasured dynamics and the nonlinear functions of available states. Based on a time-varying Riccati matrix differential equation, the designed observer overcomes the difficulty arising from the unmeasured states. Applying the Backstepping method and the switching scheme, the control laws obtained in the Recursive Procedure solve the stabilization of these general systems. Simulation validates the correctness of the presented algorithm.
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Terminal sliding modes with fast transient performance
Proceedings of the 36th IEEE Conference on Decision and Control, 1997Co-Authors: Xinghuo Yu, Man Zhihong, Yuqiang WuAbstract:An improved terminal sliding mode is proposed which exhibits fast convergence. A Recursive Procedure is used to address the SISO system control problem.
