نتایج جستجو برای: مدل k varepsilon

تعداد نتایج: 496690  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد 1389

یک شبکه هندسی، گرافی همبند و وزن دار روی مجموعه متناهی s از فضای r^d می باشد به طوری که وزن هر یال (u,v) از آن برابر با فاصله اقلیدسی میان u و v، یا |uv|، می باشد. به ازای مقدار حقیقی t ،(t>1) t-پوشش هندسی g روی s، یک شبکه هندسی غیر جهت دار روی s می باشد اگر طول کوتاهترین مسیر میان u و v در g کمتر یا مساوی با t برابر |uv| باشد. کوچکترین مقدار حقیقی t که به ازای آن g یک t-پوشش هندسی روی s باشد ض...

‎In this paper‎, ‎we propose a feasible interior-point method for‎ ‎convex quadratic programming over symmetric cones‎. ‎The proposed algorithm relaxes the‎ ‎accuracy requirements in the solution of the Newton equation system‎, ‎by using an inexact Newton direction‎. ‎Furthermore‎, ‎we obtain an‎ ‎acceptable level of error in the inexact algorithm on convex‎ ‎quadratic symmetric cone programmin...

Journal: :Mathematica Scandinavica 2023

For a holomorphic function $f$ on complex manifold $\mathscr {M}$ we explain in this article that the distribution associated to $\lvert f\rvert^{2\alpha } (\textrm{Log} \lvert f\rvert^2)^q f^{-N}$ by taking corresponding limit sets $\{ f\rvert \geq \varepsilon \}$ when $\varepsilon $ goes $0$, coincides for $\Re (\alpha ) non negative and $q, N \in \mathbb {N}$, with value at $\lambda = \alpha...

Journal: :Physical review 2022

We show that entangled measurements provide an exponential advantage in sample complexity for Pauli channel estimation, which is both a fundamental problem and practically important subroutine benchmarking near-term quantum devices. The specific task we consider to simultaneously learn all the eigenvalues of $n$-qubit $\pm\varepsilon$ precision. give estimation protocol with ancilla succeeds hi...

Journal: :Physical Review B 2021

The dimer Mott insulator $\ensuremath{\kappa}\text{\ensuremath{-}}{(\mathrm{BEDT}\text{\ensuremath{-}}\mathrm{TTF})}_{2}{\mathrm{Cu}}_{2}{(\mathrm{CN})}_{3}$ can be tuned into metallic and superconducting states on applying pressure of 1.5 kbar more. We have performed dielectric measurements (7.5 kHz to 5 MHz) single crystals as a function temperature (down $T=8$ K) (up $p=4.3$ kbar). In additi...

Journal: :bulletin of the iranian mathematical society 0
m. pirhaji department of applied mathematics‎, ‎faculty of‎ ‎mathematical sciences‎, ‎shahrekord university‎, ‎p.o‎. ‎box 115‎, ‎shahrekord‎, ‎iran. h. mansouri department of applied mathematics‎, ‎faculty of‎ ‎mathematical sciences‎, ‎shahrekord university‎, ‎p.o‎. ‎box 115‎, ‎shahrekord‎, ‎iran. m. zangiabadi department of applied mathematics‎, ‎faculty of ‎mathematical sciences‎, ‎shahrekord university‎, ‎p.o‎. ‎box 115‎, ‎shahrekord‎, ‎iran.

‎in this paper‎, ‎we propose a feasible interior-point method for‎ ‎convex quadratic programming over symmetric cones‎. ‎the proposed algorithm relaxes the‎ ‎accuracy requirements in the solution of the newton equation system‎, ‎by using an inexact newton direction‎. ‎furthermore‎, ‎we obtain an‎ ‎acceptable level of error in the inexact algorithm on convex‎ ‎quadratic symmetric cone programmin...

Journal: :Journal of the Physical Society of Japan 2021

Flows within porous media play important roles in many scientific and industrial systems. However, the case wherein such flows become turbulent has not been completely understood, particularly, from a mathematical viewpoint. In this study, $k-\varepsilon$ model (the variable $k$ denotes kinetic energy per unit mass $\varepsilon$ dissipation rate for energy), which widely used usual flow clear f...

Journal: :SIAM Journal on Computing 2023

In the $\varepsilon$-Consensus-Halving problem, a fundamental problem in fair division, there are $n$ agents with valuations over interval $[0,1]$, and goal is to divide into pieces assign label "$+$" or "$-$" each piece, such that every agent values total amount of almost equally. The was recently proven by Filos-Ratsikas Goldberg [2019] be first "natural" complete for computational class PPA,...

Journal: :Information and Inference: A Journal of the IMA 2022

Abstract The matrix $A:{{\mathbb{R}}}^n \to{{\mathbb{R}}}^m$ is $(\delta ,k)$-regular if for any $k$-sparse vector $x$, $$\begin{align*} & \left| \|Ax\|_2^2-\|x\|_2^2\right| \leq \delta \sqrt{k} \|x\|_2^2. \end{align*}$$We show that $A$ $1 k 1/\delta ^2$, then by multiplying the columns of independent random signs, resulting ensemble $A_\varepsilon $ acts on an arbitrary subset $T \subset{{...

Journal: :Studia Mathematica 2022

A bounded subset $M$ of a Banach space $X$ is said to be $\varepsilon $-weakly precompact, for given \geq 0$, if every sequence $(x_n)_{n\in \mathbb N}$ in $M$ admits subsequence $(x_{n_k})_{k\in such that $$ \limsup

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