کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9727992 | 1480215 | 2005 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The origin of 1/f fluctuations and scale transformations of time series at nonequilibrium phase transitions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
فیزیک ریاضی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The origin of 1/f fluctuations and scale transformations of time series at nonequilibrium phase transitions The origin of 1/f fluctuations and scale transformations of time series at nonequilibrium phase transitions](/preview/png/9727992.png)
چکیده انگلیسی
Investigations of the dynamics of heat and mass transfer show that in crisis and transient conditions one can observe high-energy fluctuations with a power spectrum inversely proportional to the frequency (flicker or 1/f fluctuations). Such a spectrum presupposes energy transient from high to lower frequency modes and the possibility of large-scale catastrophic events in a system. Theory shows that such fluctuations arise in a system owing to the simultaneous progress of interacting phase transitions in the presence of a white noise of sufficient intensity. The distributions functions of fluctuations during scale transformations of a system of stochastic equations describing the 1/f noise generations have been investigated. It is shown that the Gaussian distributions of a random process with a 1/f spectrum under a roughness of a scale change to exponential distribution characteristic of the statistics of extreme events. The probability of such events should be taken into account in predicting the stability of different heat transfer regimes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 346, Issues 3â4, 15 February 2005, Pages 203-216
Journal: Physica A: Statistical Mechanics and its Applications - Volume 346, Issues 3â4, 15 February 2005, Pages 203-216
نویسندگان
V.P. Koverda, V.N. Skokov,