Results 21 to 30 of about 104,900 (217)

Kinematic Self-Similar Plane Symmetric Solutions [PDF]

open access: yes, 2006
This paper is devoted to classify the most general plane symmetric spacetimes according to kinematic self-similar perfect fluid and dust solutions. We provide a classification of the kinematic self-similarity of the first, second, zeroth and infinite ...
Benoit P M   +10 more
core   +3 more sources

Flow Regime Analysis of the Pressure Build-Up during CO2 Injection in Saturated Porous Rock Formations

open access: yesEnergies, 2019
In this work, we are concerned with the theoretical and numerical analysis of the pressure build-up on the cap of an aquifer during CO2 injection in saturated porous rock formations in all flow regimes of the problem.
Ernestos Sarris, Elias Gravanis
doaj   +1 more source

Self-similar exponential approximants [PDF]

open access: yesPhysical Review E, 1998
An approach is suggested defining effective sums of divergent series in the form of self-similar exponential approximants. The procedure of constructing these approximants from divergent series with arbitrary noninteger powers is developed. The basis of this construction is the self-similar approximation theory.
Yukalov, V. I., Gluzman, S.
openaire   +2 more sources

Asymptotic Formula for the Moments of Lebesgue’s Singular Function

open access: yesМоделирование и анализ информационных систем, 2015
Recall Lebesgue’s singular function. Imagine flipping a biased coin with probability p of heads and probability q = 1 − p of tails. Let the binary expansion of ξ ∈ [0, 1]: ξ = ∑∞ k=1 ck2−k be determined by flipping the coin infinitely many times, that is ...
E. A. Timofeev
doaj   +1 more source

Fractal Antennas: An Historical Perspective

open access: yesFractal and Fractional, 2020
Fractal geometry has been proven to be useful in several disciplines. In the field of antenna engineering, fractal geometry is useful to design small and multiband antenna and arrays, and high-directive elements.
Jaume Anguera   +7 more
doaj   +1 more source

Self similar collapse and the Raychaudhuri equation

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
The role of the Raychaudhuri equation in studying gravitational collapse is discussed. A self-similar distribution of a scalar field along with an imperfect fluid in a conformally flat spacetime is considered for the purpose.
Shibendu Gupta Choudhury   +3 more
doaj   +1 more source

Asymptotic formula for the moments of Bernoulli convolutions

open access: yesМоделирование и анализ информационных систем, 2016
. Asymptotic Formula for the Moments of Bernoulli Convolutions Timofeev E. A. Received February 8, 2016 For each λ, 0 < λ < 1, we define a random variable ∞ Yλ =(1−λ)ξnλn, n=0 where ξn are independent random variables with P{ξn =0}=P{ξn =1}= 1.
E. A. Timofeev
doaj   +1 more source

Beyond 5G Network Architecture Study: Fractal Properties of Access Network

open access: yesApplied Sciences, 2020
Wireless networks connect various devices through radio waves in which the network connection may have different structures. Moreover, the network structure is determined based on the placement areas of the network elements, which can be affected by the ...
Alexander Paramonov   +6 more
doaj   +1 more source

Geometry of canonical self-similar tilings [PDF]

open access: yes, 2008
We give several different geometric characterizations of the situation in which the parallel set $F_\epsilon$ of a self-similar set $F$ can be described by the inner $\epsilon$-parallel set $T_{-\epsilon}$ of the associated canonical tiling $\mathcal T$,
Pearse, Erin P. J., Winter, Steffen
core   +5 more sources

Existence of an Unbiased Consistent Entropy Estimator for the Special Bernoulli Measure

open access: yesМоделирование и анализ информационных систем, 2019
Let \(\Omega = A^N\) - be a space of right-sided infinite sequences drawn from a finite alphabet \(A = \{0,1\}\), \(N = {1,2,\dots} \), \[\rho(\boldsymbol{x},\boldsymbol{y}) = \sum_{k=1}^{\infty}|x_{k} - y_{k}|2^{-k} \] - a metric on \(\Omega\), and ...
Evgeniy A. Timofeev
doaj   +1 more source

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