نتایج جستجو برای: fast kurtogram
تعداد نتایج: 229021 فیلتر نتایج به سال:
Noise would give rise to incorrect filtering frequency-band selection in signal filtering-based methods including fast kurtogram, teager energy operators and wavelet packet transform filters meanwhile result of useful components even mode mixing, end effects, etc., decomposition-based empirical decomposition, singular value decomposition local mean decomposition. On the contrary, noise stochast...
a phase-locked loop (pll) based frequency synthesizer is an important circuit that is used in many applications, especially in communication systems such as ethernet receivers, disk drive read/write channels, digital mobile receivers, high-speed memory interfaces, system clock recovery and wireless communication system. other than requiring good signal purity such as low phase noise and low spu...
heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...
Faults in rolling element bearing are among the main causes of breakdown in rotating machines. Vibration is an effective technique for machine condition monitoring. Vibration signals from a defective bearing with a localized fault contain a series of impulsive responses, which result from the impacts of the defective part(s) with other elements. Most researches carried out have focused on fault...
هدف پژوهش حاضر طراحی آزمون میدانی جدید بنام (fast) به منظور برآورد توان هوازی بازیکنان فوتسال و بررسی روایی و پایایی آن بود. شرکت کنندگان در این تحقیق 14 نفر از بازیکنان فوتسال تیم هیرسا حاضر در مسابقات دسته یک بانوان باشگاه های کشور با میانگین سنی 22/4+-5/21 سال ، قد 17/4+-64/159 سانتی متر ، توده بدنی 15/5+-01/56 کیلوگرم ، درصد چربی 32/4+-79/22 درصد و bmi 08/2+-99/21 کیلوگرم بر مجذور متر بودند...
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