نتایج جستجو برای: peak frequency shift to lower frequencies2

تعداد نتایج: 10799248  

Journal: :Machine learning: science and technology 2021

A shift-invariant variational autoencoder (shift-VAE) is developed as an unsupervised method for the analysis of spectral data in presence shifts along parameter axis, disentangling physically-relevant from other latent variables. Using synthetic sets, we show that shift-VAE variables closely match ground truth parameters. The shift VAE extended towards band-excitation piezoresponse force micro...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند 1389

there has been a gradual shift of focus from the study of rule systems, which have increasingly been regarded as impoverished, … to the study of systems of principles, which appear to occupy a much more central position in determining the character and variety of possible human languages. there is a set of absolute universals, notions and principles existing in ug which do not vary from one ...

2001
K. Sathananthan C. Tellambura

Orthogonal Frequency Division Multiplexing (OFDM), a promising technique to support high-bit-rate wireless systems, is limited by potentially large Peak-to-Average Power ratio (PAR) and Intercarrier Interference (ICI) due to frequency offset errors. Several techniques proposed in the literature treat these limitations as two separate problems. This paper shows that a simple adaptive modulation ...

آقابیگی, ماندانا, جوادپور, فوزیه, سلطان زاده, احمد, طباطبایی, سید حمیدرضا, فلاح پور, افشین, چوبینه, علیرضا,

  Background and Aim: After conducting a comprehensive study on shift work systems in petrochemical companies and recommending appropriate shift schedules, some companies changed shift patterns. After a year, the present study was carried out at a petrochemical company which changed its shift pattern from 4-4-4 to 3-3-3. The objective of the study was evaluation of effectiveness of shift schedu...

ژورنال: سلامت کار ایران 2006
حبیبی, احسان اله, حسن زاده, اکبر, شاهری, ابوالحسن, پورعبدیان, سیامک, گلشیری, پرستو,

  Background and aims   Respiratory diseases are one of the more Prevalence occupational diseases in colour Production industries. Because chemical hazard that are present in such  industries improving screening methods is essential. There is some kind of respiratory function  evaluation methods it seems that serial peak flowmetry has found a new place.   MethodS   In this cross sectional study...

Journal: :cell journal 0

introduction: some dental sealers have neurotoxic effects on neuronaltissues. these effects appear to be mediated through the inhibition of ionic channels. intracellular recording was performed on neuronal cells tocharacterize the underlying ionic mechanisms of neurotoxicity induced by roth 801. materials and methods: experiments were carried out on f1 neuronal soma membrane located in the righ...

In this paper, the effect of pressure, temperature and impurity on the energylevels, binding energy, linear and nonlinear optical properties of a modified Gaussianquantum dot are studied. In this regard, the finite element method is employed to solvethe single electron Schrodinger equation in the effective mass approximation with andwithout impurity at the center of the dot. In addition, the en...

2005
E. J. Livesey I. P. L. McLaren

Recent evidence from animal research suggests that peak shift effects produced with complex pattern stimuli are influenced by the level of spatial variability over successive presentations of the stimuli. Initial attempts to explain this have relied on postulating a shift between elemental and configural representations supporting learning. Here we outline an elemental model based on contempora...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد 1390

the debate whether esp teachers need to have knowledge of the specialized field they are teaching has been an issue in the literature over the last two decades. the aim of conducting this study was to explore iranian learners’ and instructors’ beliefs and attitudes concerning the role of specialized knowledge in teaching esp classes. a seventeen item questionnaire was administered to 400 esp le...

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