高级检索

 作者：Chang-Chun Bao , Xin Liu , Yong-Tao Sha ... 来源：[J].EURASIP Journal on Audio, Speech, and Music Processing(IF 0.63), 2014, Vol.2014 (1), pp.1-9Springer 摘要：... In this paper, a novel blind bandwidth extension method is proposed based on phase space reconstruction. Phase space reconstruction is introduced to convert the low-frequency modified discrete cosine transform coefficients of wideband audio to a multi-dimensional space, and t...
 作者：Le Wang , Jiazhong Zhang , Wenfan Zhang 来源：[J].Entropy(IF 1.347), 2015, Vol.17 (12), pp.7888-7899DOAJ 摘要：Based on phase space reconstruction and fractal dynamics in nonlinear dynamics, a method is proposed to extract and analyze the dynamics of the rotating stall in the impeller of centrifugal compressor, and some numerical examples are given to verify the results as well. Firs...
 作者：Andrés Crespo-Hernández , Eri A. Mena-Barboza , Miguel Sabido 来源：[J].Entropy(IF 1.347), 2017, Vol.19 (3)DOAJ 摘要：In this paper we study the effects of noncommutative phase space deformations on the Schwarzschild black hole. This idea has been previously studied in Friedmann–Robertson–Walker (FRW) cosmology, where this “noncommutativity” provides a simple mechanism that can explai...
 作者：Z. Derakhshani , M. Ghominejad 来源：[J].Chinese Journal of Physics(IF 0.477), 2016, Vol.54 (5), pp.761-772Elsevier 摘要：Abstract(#br)In this paper, we consider the Dirac equation in two dimensions influenced by an energy-dependent potential within a non-commutative phase space (NCP) framework for which no clear and reasonable solution has been given until now. By using the Nikiforov–Uvarov meth...
 作者：Fengxiang Mei 来源：[J].Chinese Science Bulletin(IF 1.319), 2002, Vol.47 (24), pp.2049-2050Springer 摘要：Abstract(#br)A non-Noether conserved quantity for the differential equations of motion of mechanical systems in the phase space is studied. The differential equations of motion of the systems are established and the determining equations of Lie symmetry are given. An existence th...
 作者：F. Khodabakhshi , M. Sarlak 来源：[J].International Journal of Electrical Power and Energy Systems(IF 3.432), 2018, Vol.95, pp.537-549Elsevier 摘要：Abstract(#br)This paper presents two phase space (PS) based criteria, and then on the basis of which it illustrates the preparation of a new non-intelligent and noncommunication adaptive single phase auto-reclosure (ASPAR) scheme to detect the secondary arc extinction for reclosu...
 作者：Piotr Żenczykowski 来源：[J].Advances in Applied Clifford Algebras(IF 0.584), 2017, Vol.27 (1), pp.333-344Springer 摘要：... The idea of space quantization suggests then the linearization of the nonrelativistic quadratic form $${{\mathbf{p}}^2 +{\mathbf{x}}^2}$$ p 2 + x 2 with position and momentum satisfying standard commutation relations. This leads to the 64-dimensional Clifford algebra {{...
 作者：Samira Bahrami , Sadolah Nasiri 来源：[J].Symmetry, Integrability and Geometry: Methods and Applications(IF 1.243), 2008, Vol.4, pp.014DOAJ 摘要：In a previous work the concept of quantum potential is generalized into extended phase space (EPS) for a particle in linear and harmonic potentials. It was shown there that in contrast to the Schrödinger quantum mechanics by an appropriate extended canonical transformation one...
 作者：Sadollah Nasiri 来源：[J].Symmetry, Integrability and Geometry: Methods and Applications(IF 1.243), 2006, Vol.2, pp.062DOAJ 摘要：The behavior of the quantum potential is studied for a particle in a linear and a harmonic potential by means of an extended phase space technique. This is done by obtaining an expression for the quantum potential in momentum space representation followed by the generalization of...
 作者：Sadollah Nasiri 来源：[J].Symmetry, Integrability and Geometry: Methods and Applications(IF 1.243), 2006, Vol.2DOAJ 摘要：The behavior of the quantum potential is studied for a particle in a linear and a harmonic potential by means of an extended phase space technique. This is done by obtaining an expression for the quantum potential in momentum space representation followed by the generalization of...