Results 21 to 30 of about 624,709 (272)

Comparison of synthetic maps from truncated jet-formation models with YSO jet observations [PDF]

open access: yes, 2010
(abridged) Significant progress has been made in the last years in the understanding of the jet formation mechanism through a combination of numerical simulations and analytical MHD models for outflows characterized by the symmetry of self-similarity. In
Gracia, Jose   +3 more
core   +1 more source

Self-propelled non-linearly diffusing particles. Aggregation and continuum description [PDF]

open access: yes, 2005
We introduce a model of self-propelled particles carrying out a Brownian motion with a diffusion coefficient which depends on the local density of particles within a certain finite radius. Numerical simulations show that in a range of parameters the long-
Lopez, Cristobal
core   +2 more sources

On a Numerical Radius Preserving Onto Isometry on L(X)

open access: yesJournal of Function Spaces, 2016
We study a numerical radius preserving onto isometry on L(X). As a main result, when X is a complex Banach space having both uniform smoothness and uniform convexity, we show that an onto isometry T on L(X) is numerical radius preserving if and only if ...
Sun Kwang Kim
doaj   +1 more source

Research on Straightness Perception Compensation Model of FBG Scraper Conveyor Based on Rotation Error Angle

open access: yesSensors, 2022
The accurate perception of straightness of a scraper conveyor is important for the construction of intelligent working faces in coal mines. In this paper, we propose a precision compensation model based on rotation error angle to improve the accuracy of ...
Yang Song   +6 more
doaj   +1 more source

The Ising model with long-range interactions

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2015
The phase transition in the two-dimensional and three-dimensional Ising models with long-range spin interactions are studied with the Monte-Carlo method. The interaction region between spins is characterized by the radius $R$.
Alexander A Biryukov, Yana V Degtyarova
doaj   +1 more source

New Analytical Formula for Supercritical Accretion Flows [PDF]

open access: yes, 2006
We examine a new family of global analytic solutions for optically thick accretion disks, which includes the supercritical accretion regime. We found that the ratio of the advection cooling rate, $Q_{\rm adv}$, to the viscous heating rate, $Q_{\rm vis}$,
Abramowicz M. A.   +23 more
core   +2 more sources

Testing  Method for  the Range of  Fracture Zone of  Rock  Slope under Blasting Load

open access: yesShock and Vibration, 2021
In engineering blasting, the determination of the range of rock blasting fracture zone has important guiding significance for blasting construction. This paper proposes a method that can accurately and directly obtain the range of rock blasting fracture ...
Zhide Wang   +6 more
doaj   +1 more source

Schur product of matrices and numerical radius (range) preserving maps

open access: yesLinear Algebra and its Applications, 2007
Let \(M_n\) (resp., \(H_n)\) be the algebra of \(n\)-by-\(n\) complex matrices (resp., Hermitian matrices). The numerical range \(W(A)\) and numerical radius \(w(A)\) of \(A\) in \(M_n\) are given by \[ W(A)=\{x^*Ax: x\in\mathbb{C}^n,x^*x=1\}\quad\text{and} \quad w(A)=\max\{|\lambda|: \lambda\in W(A)\}, \] respectively.
Li, Chi-Kwong, Poon, Edward
openaire   +1 more source

Elastic stress concentration at radial crossholes in pressurised thick cylinders [PDF]

open access: yes, 2007
Results of a parametric finite element analysis investigation of stress concentration at radial crossholes in pressurized cylinders are presented in numerical and graphical form.
Comlekci, T.   +3 more
core   +1 more source

Flow interference of two side-by-side square cylinders using IB-LBM – Effect of corner radius

open access: yesResults in Physics, 2018
In this study, a two-dimensional Immersed Boundary Lattice Boltzmann Method (IB-LBM) is employed to investigate computationally effect of flow past a pair of square cylinders in side-by-side arrangement at Re=100, for various corner radii.
Ehsan Adeeb   +2 more
doaj   +1 more source

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