نتایج جستجو برای: power law model

تعداد نتایج: 2609079  

Journal: :nanomedicine journal 0
mobin haghdel department of fluid mechanics, shiraz university, shiraz, iran reza kamali department of fluid mechanics, shiraz university, shiraz, iran ali haghdel department of electronics and communication engineering, shiraz university, shiraz, iran zahra mansoori department of physiology, shiraz university, shiraz, iran

objective(s): one applications of nanotechnology is in the area of medicine which is called nanomedicine. primary instruments in nanomedicine can help us to detect diseases and used for drug delivery to inaccessible areas of human tissues. an important issue in simulating the motion of nanoparticles is modeling blood flow as a newtonian or non-newtonian fluid. sometimes blood flow is simulated ...

1996
Satoshi Yukawa

Density fluctuations in traffic current are studied by computer simulations using the deterministic coupled map lattice model on a closed single-lane circuit. By calculating a power spectral density of temporal density fluctuations at a local section, we find a power-law behavior, ∼ 1/f, on the frequency f , in non-congested flow phase. The distribution of the headway distance h also shows the ...

Our galaxy is a spiral galaxy and its stars are mostly in a thin disk and rotate around the galactic center. The vertical component of the dispersion velocity of stars is a function of the galactic latitude and decreases with increasing it. In the galactic Besancon model, this dependence is ignored and they just consider the dependence of dispersion velocity on the stellar age. Becanson model i...

Journal: :Random Struct. Algorithms 2011
Colin Cooper Pawel Pralat

We study a scale-free random graph process in which the number of edges added at each step increases. This differs from the standard model in which a fixed number, m, of edges are added at each step. Let f(t) be the number of edges added at step t. In the standard scale-free model, f(t) = m constant, whereas in this paper we consider f(t) = [tc], c > 0. Such a graph process, in which the number...

Afrsiab Raisi Afshin Ahmadi Nadooshan, Amin Shahsavar, Rouhollah Yadollahi Farsani

Liquid paraffin can be used as a coolant fluid in electronic and cutting devices due to its suitable capabilities such as electrical insulating, high heat capacity, chemical, and thermal stability, and high boiling point. In this study, the dynamic viscosity of paraffin containing the alumina nanoparticles has been examined experimentally. The nanofluids with different composition of alumina (0...

2012
Gili Hochman Yuri Kogan Vladimir Vainstein Ofir Shukron Andreas Lankenau Björn Boysen Rebecca Lamb Tzivia Berkman Robert Clarke Claus Duschl Zvia Agur

Understanding tumor growth dynamics is important for planning cancer therapy, especially in radiotherapy, where standard fractionation is determined based on the assumption that tumors grow exponentially. In this chapter, we explore the ramifications of an alternative, but equally plausible, assumption of tumor growth, namely power growth law, realized in linear increase in tumor diameter. We p...

2008
P. Ubertini R. Walter

Aims. The 0.5-150 keV broad-band spectra of a sample of nine bright type 1 Seyfert galaxies are analyzed here. These sources have been discovered/detected by INTEGRAL and subsequently observed with XMM–Newton for the first time with high sensitivity below 10 keV. The sample, although small, is representative of the population of type 1 AGN which are now being observed above 20 keV. Methods. The...

2016
Michal Brzezinski

We use data on the wealth of the richest persons taken from the ‘rich lists’ provided by business magazines like Forbes to verify if the upper tails of wealth distributions follow, as often claimed, a power-law behaviour. The data sets used cover the world’s richest persons over 1996–2012, the richest Americans over 1988–2012, the richest Chinese over 2006–2012, and the richest Russians over 20...

Journal: :CoRR 2015
Sachio Hirokawa Eisuke Ito

Shannon[1] and Yavuz[2] estimated the entropy of real documents. This note drives an upper bound of entropy from the power law. Let D be a set of documents and f r(w) be the number of occurrences of a word w in the document. Given an interger k, we denote by F (k) the number of words whose frequency is k, i.e., F (k) = ♯{w ∈ D | f r(w) = k}. The entropy of the document set D is defined by E(D) ...

2007
Metin Coşgel Rasha Ahmed Thomas Miceli

The struggle for power has been a persistent phenomenon throughout history, involving the rulers, general public, and various other interest groups. As one of these groups, the legal community has been in a unique position to regulate the relationship between the ruler and the public because of its dual responsibilities to provide services to the public and to impose constraints on the rulers. ...

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