نتایج جستجو برای: time varying frequency content

تعداد نتایج: 2686815  

Journal: :international journal of modeling, identification, simulation and control 0
ahmad kalhor تهران- خیابان کارگرشمالی- بالاتر از تقاطع جلال آل احمد- پردیس دانشکده های فنی - دانشکده برق nima hojjatzadeh university of tehran alireza golgouneh university of tehran

evolving models have found applications in many real world systems. in this paper, potentials of the evolving linear models (elms) in tracking control design for nonlinear variable structure systems are introduced. at first, an elm is introduced as a dynamic single input, single output (siso) linear model whose parameters as well as dynamic orders of input and output signals can change through ...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2016
Ingrid Daubechies Yi Wang Hau-Tieng Wu

A new method is proposed to determine the time-frequency content of time-dependent signals consisting of multiple oscillatory components, with time-varying amplitudes and instantaneous frequencies. Numerical experiments as well as a theoretical analysis are presented to assess its effectiveness.

Journal: :European Journal of Operational Research 2006
Sathaporn Opasanon Elise Miller-Hooks

In a recent paper, Opasanon and Miller-Hooks study multicriteria adaptive paths in stochastic time-varying networks. They propose a label correcting algorithm for finding the full set of efficient strategies. In this note we show that their algorithm is not correct, since it is based on a property that does not hold in general. Opasanon and Miller-Hooks also propose an algorithm for solving a p...

2013
Bruno F. Ribeiro Nicola Perra Andrea Baronchelli

Time-varying networks describe a wide array of systems whose constituents and interactions evolve over time. They are defined by an ordered stream of interactions between nodes, yet they are often represented in terms of a sequence of static networks, each aggregating all edges and nodes present in a time interval of size Δt. In this work we quantify the impact of an arbitrary Δt on the descrip...

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