نتایج جستجو برای: nonlinear analyses

تعداد نتایج: 599670  

2017
Motoki Nakata

In this article, additional discussions on the nonlinear entropy transfer between turbulence and zonal flows are given for the isotope ion mass effects on the trapped-electron-mode (TEM) driven turbulent transport shown in Ref. 1. Spectral analyses with the triad entropy transfer function reveal that the case with heavier isotope ions indicates a relatively smaller negative transfer (from zonal...

Journal: :Optics letters 2012
Yahui Feng Wenxue Li Jia Liu Haifeng Pan Jian Wu Heping Zeng

We developed a direct measurement method for comprehensive analyses of Kerr and plasma effects that cooperated or competed with molecular alignment-induced spatiotemporal modulation for intense aligning and weak probing pulses around zero time delay. The mixed influences were revealed by time-resolving the combined spatial focusing or defocusing dynamics under different molecular alignment dire...

Journal: :نشریه مهندسی عمران و نقشه برداری 0
مهدی قاسمیه دانشگاه تهران محمدسهیل قبادی دانشگاه تهران علی مزروعی دانشگاه آزاد اسلامی و عضو مرکز تحقیقات ساختمان و مسکن

in iran, for column design, double i shape section is used due to lack of ipb profile. double i shape column performance is ambiguous in existing steel structures, especially when subjected to seismic loading. in this paper, double i shape column behavior is evaluated with 3d nonlinear analyses. monotonic behavior of 6 specimens and hysteretic behavior of other six specimens have been simulated...

Journal: :journal of rehabilitation in civil engineering 2014
muhammad abbassi hooshang dabbagh

fiber reinforced polymers (frp) have widely used for the purposes of enhances strength and ductility of concrete columns. proper design of such hybrid columns, however, requires a better recognition of the behavior of concrete columns confined with frp. in this paper, the influence of frp thickness, concrete compressive strength, and column size on the performance of eccentrically loaded reacti...

Journal: :international journal of automotive engineering 0
a. saeedi kazemi rafat h. pasdar

in this paper, a complete model of an electro hydraulic driven dry clutch along with its performance evaluation has elucidated. through precision modeling, a complete nonlinear physical and full order sketch of clutch has drawn. ultimate nonlinearities existent in the system prohibits it from being controlled by conventional linear control algorithms and to compensate the behavior of the system...

2017
Limin Zhao Xiaoqin Tian Xueyan Duan Yongxiu Ye Min Sun Junfang Huang

Prospective epidemiologic studies on the association between body mass index (BMI) and bladder cancer yielded inconsistent findings. This study sought to quantitatively summarize the evidence by performing a dose-response meta-analysis on prospective cohort studies. Eligible studies were retrieved via PubMed and Embase databases, and by manual review of the references. Linear and nonlinear tren...

2016
Constantinos C. Repapis

The inelastic response of existing reinforced concrete (RC) buildings without seismic details is investigated, presenting the results from more than 1000 nonlinear analyses. The seismic performance is investigated for two buildings, a typical building form of the 60s and a typical form of the 80s. Both structures are designed according to the old Greek codes. These building forms are typical fo...

Journal: :NeuroImage 2004
Olivier David Diego Cosmelli Karl J Friston

We use a neural mass model to address some important issues in characterising functional integration among remote cortical areas using magnetoencephalography or electroencephalography (MEG or EEG). In a previous paper [Neuroimage (in press)], we showed how the coupling among cortical areas can modulate the MEG or EEG spectrum and synchronise oscillatory dynamics. In this work, we exploit the mo...

Journal: :مجله ایرانی آموزش در علوم پزشکی 0
محسن رضائیان m rezaeian گروه پزشکی اجتماعی، دانشکده پزشکی، دانشگاه علوم پزشکی رفسنجان

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Journal: :Physiological measurement 2009
D Alvarez R Hornero D Abásolo F del Campo C Zamarrón M López

This study focuses on analysis of the relationship between changes in blood oxygen saturation (SaO(2)) and heart rate (HR) recordings from nocturnal pulse oximetry (NPO) in patients suspected of suffering from obstructive sleep apnoea (OSA) syndrome. Two different analyses were developed: a classical frequency analysis based on the magnitude squared coherence (MSC) and a nonlinear analysis by m...

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