نتایج جستجو برای: aeroelastic frequency response function

تعداد نتایج: 2451851  

Journal: :پژوهش های روانشناسی بالینی و مشاوره 0
علی مشهدی ندا حمیدی عاطفه سلطانی فر سعید تیموری

executive dysfunction theory in autism spectrum disorders is basis for many features of this disorders in social and non social areas. the purpose of research was study of response inhibition in children with autism spectrum disorders using computerized stroop test. this study was causal-comparative research. convenient sampling method were used for selected of 15 boy with autism spectrum disor...

Journal: :iranian journal of cognition and education 2014
seyedeh maryam moshirian farahi seyed mohammad mahdi moshirian farahi mohammad javad asghari ebrahim abad mohammad ebrahim hokm abadi

objectives: the purpose of this study was to compare the relationship between theory of mind and inhibitory responses in normal children and adhd. methods: this study is descriptive study, a sample size of 25 patients adhd children and 30 normal children, who were randomly selected. research instruments are questionnaires theory of mind and computerized stroop test. results: the results showed ...

Journal: :international journal of nanoscience and nanotechnology 2015
e. maani miandoab f. tajaddodianfar h. nejat pishkenari h. m. ouakad

many of nonlinear systems in the field of engineering such as nano-resonator and atomic force microscope can be modeled based on duffing equation. analytical frequency response of this system helps us analyze different interesting nonlinear behaviors appearing in its response due to its rich dynamics. in this paper, the general form of duffing equation with cubic nonlinearity as well as paramet...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2012
amir heidari mansour shirvani

in this contribution, linearized dynamic model of cumulative mass fraction (cmf) of potassium nitrate-water seeded continues mixed suspension mixed product removal (cmsmpr) crystallizer is approximated by a simplified model in frequency domain. frequency domain model simplification is performed heuristically using the frequency response of the derived linearized models data. however, the cmf fr...

2004

Since a large number of physical variables are involved in the combustion process occurring in complex swirl stabilized combustors, simple systems (burner stabilized laminar flat flames) were initially studied (see chapters 5 and 6). Having understood the dynamics of laminar flat flames and developed methodologies to build reduced order flame dynamic models, the technique developed to measure t...

Journal: :CoRR 2015
Suresh Thenozhi Yu Tang

A nonlinear frequency response based adaptive vibration controller is proposed for a class of nonlinear mechanical systems. In order to obtain the nonlinear Frequency Response Function (FRF), the convergence properties of the system are studied by using the convergence (contraction) theory. If the system under consideration is: 1) convergent, it directly enables to derive a nonlinear FRF for a ...

2017
Junxiu Zhang Zeping Tong

To explore the relationship between the prices of shipping market and China's economy, this paper analyzes the data of BDI and China's GDP from 2000 to 2015. By stabilizing the BDI and GDP data, this paper identifies the one-way causal relationship between the BDI and China's GDP via the granger causality test. The conclusion shows that BDI effects China's GDP positively at rate of 22% by using...

Journal: :IEEE Trans. Instrumentation and Measurement 2000
Johan Schoukens Rik Pintelon Yves Rolain

In this paper, the required measurement time to measure a transfer function with a specified accuracy is analyzed. The waiting time that is needed to balance the transient induced errors against the noise errors is calculated. This allows one to decide under what conditions broad-band measurements are faster than stepped sine measurements.

2010
G. P. Guruswamy

A modular capability to compute dynamic aeroelastic characteristics of rotor blades using the Euler/Navier– Stokes flow equations and finite element structural equations is presented. The approach is based on a time-accurate analysis procedure that is suitable for nonlinear fluid–structure interaction problems. Fluids and structural solvers are time-accurately coupled in the C++ environment. Un...

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