نتایج جستجو برای: scaling constants

تعداد نتایج: 118273  

2003
Erik van Nimwegen

With the number of sequenced genomes now over one hundred, and the availability of rough functional annotations for a substantial proportion of their genes, it has become possible to study the statistics of gene content across genomes. Here I show that, for many high-level functional categories, the number of genes in the category scales as a power-law in the total number of genes in the genome...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2001
H Chamati N S Tonchev

A detailed investigation of the scaling properties of the fully finite O(n) systems, under periodic boundary conditions, with long-range interaction, decaying algebraically with the interparticle distance r like r(-d-sigma), below their upper critical dimension, is presented. The computation of the scaling functions is done to one loop order in the nonzero modes. The results are obtained in an ...

Journal: :Trends in genetics : TIG 2003
Erik van Nimwegen

With the number of sequenced genomes now over one hundred, and the availability of rough functional annotations for a substantial proportion of their genes, it has become possible to study the statistics of gene content across genomes. Here I show that, for many high-level functional categories, the number of genes in the category scales as a power-law in the total number of genes in the genome...

2001
O. B. Isaeva S. P. Kuznetsov

The accumulation point of the period-tripling bifurcation cascade in complex quadratic map was discovered by Golberg, Sinai, and Khanin (Russ.Math.Surv. 38:1, 1983, 187), and independently by Cvitanović and Myrheim (Phys.Lett. A94:8, 1983, 329). As we argue, in the extended parameter space of smooth maps, not necessary satisfying the Cauchy – Riemann equations, the scaling properties associated...

1998
S. Vinti

We propose a method to obtain an improved Hamiltonian (action) for the Ising universality class in three dimensions. The improved Hamiltonian has suppressed leading corrections to scaling. It is obtained by tuning models with two coupling constants. We studied three different models: the ±1 Ising model with nearest neighbour and body diagonal interaction, the spin-1 model with states 0,±1, and ...

Journal: :SIAM Journal on Computing 2021

We present a spectral analysis of continuous scaling algorithm for matrix and operator scaling. The main result is that if the input or has gap, then natural gradient flow linear convergence. This implies simple descent also convergence under same assumption. gap condition closely related to notion quantum expander studied in information theory. provides bounds on some important quantities prob...

Journal: :Mathematical Modelling and Numerical Analysis 2021

In this article, we analyse an integral equation of the second kind that represents solution N interacting dielectric spherical particles undergoing mutual polarisation. A traditional analysis can not quantify scaling stability constants- and thus approximation error- with respect to number involved spheres. We develop a new priori error demonstrates -independent continuous discrete formulation...

Journal: :journal of the iranian chemical research 0
ateesa yazdanipour department of chemistry, faculty of sciences, islamic azad university, arak branch, arak, iran

the acid-base equilibrium of lorazepam was studied by means of potentiometry andmultiwavelengths spectrophotometry. the stoichiometric equilibrium constants were determinedat 25 °c and constant ionic strength 0.1 mol l-1 (nacl). the acidity constants pk1=1.58±0.05and pk2=11.67±0.07 were found by potentiometry, and pk1=1.54±0.02 and pk2=11.61±0.03 bymulti-wavelengths spectrophotometry. potentiom...

Journal: :Journal of Mathematical Physics 2021

We gain tight rigorous bounds on the renormalization fixed point for period doubling in families of unimodal maps with degree 4 critical point. use a contraction mapping argument to bound essential eigenfunctions and eigenvalues linearization operator controlling scaling added noise. Multi-precision arithmetic directed rounding is used operations space analytic functions yielding power series c...

2000
Oscar Millet J. Patrick Loria Christopher D. Kroenke Miquel Pons Arthur G. Palmer

The static magnetic field dependence of chemical exchange linebroadening in NMR spectroscopy is investigated theoretically and experimentally. Two-site exchange (A / B) is considered with site A more highly populated than site B (pa > pb), a shift difference between sites equal to ∆ω, and an exchange rate constant given by kex. The exchange contribution to the transverse relaxation rate constan...

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