نتایج جستجو برای: number size n s fractal model

تعداد نتایج: 4543877  

1997
H. Kimura H. Ishimoto T. Mukai

Using the fractal aggregate model for circumsolar dust grains, the nature of the circumsolar dust clouds is examined. As a fractal dimension of the aggregate decreases, the porosity of the aggregate increases. Consequently, its temperature becomes independent of its size, and approaches that of its constituent particles. This evidence suggests that the fractal aggregates with different sizes an...

2001
A. Tripp E. Cherkaev J. Moore

A long standing approximation in EM logging for fractures has been to assume that a fracture is an extended thin sheet, perhaps a half-plane. This approximation can be useful and is theoretically and numerically convenient. However, examination of core, FMS logs, and outcrop reveals that fracture zones can be geometrically self-similar over dimensional scales of less than millimeters to kilomet...

Introduction: Many natural phenomena have many variables that make it difficult to find relationships between them using common mathematical methods. This problem, along with the impossibility of measuring all elements of nature, has led to a major evolution in the way of understanding and explaining phenomena. In this way, one can use the fractal geometry with the theory that many natural phen...

Journal: :Geoderma 2021

Previous works related to the application of multifractal theory for analyzing grain size distribution (GSD), showed potential this approach deal with complex issue. However, absence practical kind statistical analysis raised some doubts among soil scientists. Compared experimental dry sieving method, which is based on mass representations different sizes, presented in work relies densities (de...

2003
Carlos Castro Jorge Mahecha

The Riemann’s hypothesis (RH) states that the nontrivial zeros of the Riemann zeta-function are of the form s = 1/2+iλn. Hilbert-Polya argued that if a Hermitian operator exists whose eigenvalues are the imaginary parts of the zeta zeros, λn’s, then the RH is true. In this paper a fractal supersymmetric quantum mechanical (SUSY-QM) model is proposed to prove the RH. It is based on a quantum inv...

ژورنال: :پژوهش های دانش زمین 0
صادق افشار نجفی دانشگاه فردوسی مشهد بهنام رحیمی دانشگاه فردوسی مشهد فرزین قائمی دانشگاه فردوسی مشهد ریحانه احمدی روحانی دانشگاه فردوسی مشهد

تجزیه و تحلیل شدت(i)، تجمع(ρ)، میانگین طول خطواره(µ) و تقاطع(n)، از پارامترهای کاربردی در محاسبات آماری گسلها و شکستگیها است که در واحد سطح بیان می شوند. در این تحقیق بارز سازی خطواره ها با به کار گیری تصویر اسپات5 انجام شد. شکستگیها در دو دسته سیستماتیک با روند های شمال غربی – جنوب شرقی که روند غالب منطقه هستند و شمال شرقی – جنوب غربی دسته بندی شدند. با توجه به وسعت منطقه و میزان توزیع شکستگیه...

الهام شکریان, , بهاره قانع مطلق, , سمانه برادران, , شاهین روحانی, , ناهید ملکی جیرسرایی, ,

  Patterns formed by the flow of an inhomogeneous fluid (suspension) over a smooth inclined surface were studied. It was observed that fractal patterns formed. There exists a threshold angle for the inclination above which, global fractal patterns are formed. This angle depends on the particle size of the suspension. We observed that there are two fractal dimensions for these patterns, dependin...

Bahman Rashidi Majid Khazaei Zoya Tahergorabi

Objective(s): Atherosclerosis is a chronic immune-inflammatory disease that generally leads to ischemic heart disease. Ghrelin has several modulatory effects on cardiovascular system. In this study, we investigated the effect of ghrelin on aortic intima-media thickness, size and the number of adipocyte cells in obese and control mice. Materials and Methods:This study was conducted on 24 male C...

2006

An interesting class of fractal sequences consists of signature sequences for irrational numbers. The signature sequence of the irrational number x is obtained by putting the numbers i + j × x i , j = 1, 2, 3, … in increasing order. Then the values of i for these numbers form the signature sequence for x, which is denoted by S(x). Here's the signature sequence for φ, the golden mean: Both upper...

2006
José Gaite

On the one hand, the large scale structure of matter is arguably scale invariant, and, on the other hand, halos and voids are recognized as prominent features of that structure. To unify both approaches, we propose to model the dark matter distribution as a set of fractal distributions of halos of different kinds. This model relies on the concept of multifractal as the most general scaling dist...

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