نتایج جستجو برای: Fluctuation

تعداد نتایج: 26778  

Journal: :Circulation 2012

2008
Francesco Zamponi

1 Why should we test the fluctuation relation? 3 1.1 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 The fluctuation relation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.3 The “transient fluctuation relation” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.4 Anosov systems a...

احمد مدرس محسن حمشی, کامران لیلی پور

هدف این مقاله، مطالعه رابطه بین اعلام میزان سهام شناور شرکت‌ها با حجم معاملات، نوسان‌پذیری و بازده سهام شرکت‌های پذیرفته شده در بورس اوراق بهادار تهران است. در این راستا، تعداد 188 شرکت پذیرفته شده در بورس اوراق بهادار تهران بررسی و جهت آزمون فرضیه‌ها از داده‌های تلفیقی با اثرات ثابت و نرم افزار Eviews 6 استفاده شده است. یافته‌های تحقیق نشان می‌دهد که  بین اعلام میزان سهام شناور شرکت‌ها و حجم م...

Iran economy is a dependent economy on exogenous factor of oil revenues and as Iran economy is governmental condition, the production quantity depends on this exogenous factor and always has lots of fluctuations. As lack of fluctuation in production quantity and its continuum growth form the increase in profitability expectation of private investment, this article reviews the effective factors...

Journal: :computational methods in civil engineering 2010
r. jamshidi chenari r. oloomi dodaran

one of the main distinctions between geomaterials and other engineering materials is the spatial variation of their properties in different directions. this characteristic of geomaterials -so called heterogeneity- is studied herewith. several spatial distributions are introduced to describe probabilistic variation of geotechnical properties of soils. among all, the absolute normal distribution ...

Raghubansha Singh Saroj Padhi, Satish Agrawal

In the present work an attempt has been made to study the effect of the twisted tapes as bed internals, on the performance of the gas-solid fluidized beds. Experimental investigation has been carried out in cylindrical column with and without twisted tapes. Twelve numbers of twisted tapes of three different widths with four values of the twist ratios for each width were studied at different...

2008
W. P. He G. L. Feng Q. Wu S. Q. Wan J. F. Chou

Based on Detrended Fluctuation Analysis (DFA), we propose a new method – Moving Detrended Fluctuation Analysis (MDFA) – to detect abrupt change in dynamic structures. Application of this technique shows that this method may be of use in detecting time-instants of abrupt change in dynamic structures and we even find that the MDFA results almost do not depend on length of subseries, and are less ...

2012
Hiroya Utsumi Hiroo Terashi Yohei Ishimura Tomoko Takazawa Yasuyuki Okuma Mitsuru Yoneyama Hiroshi Mitoma

In advanced-stage Parkinson's disease (PD), motor fluctuation is a frequent and disabling problem. Assessment of motor fluctuation depends on patient's subjective self-statement. We examined whether the subjective fluctuation matched the objective motor fluctuation defined by gait disorders. Using a new device, the portable gait rhythmogram, we recorded gait cadence and acceleration continuousl...

Journal: :The Journal of the Acoustical Society of America 1998
J W Hall J H Grose W M Hartmann

In experiment 1 NoSo and NoS pi thresholds for a 500-Hz pure tone were obtained in a low-fluctuation masking noise and a high-fluctuation masking noise for six normal-hearing listeners. The noise bandwidth was 10 Hz. In agreement with previous investigations, the NoSo thresholds were lower in low-fluctuation noise than in high-fluctuation noise. For three listeners, NoS pi thresholds were simil...

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