Results 11 to 20 of about 3,658,908 (303)

Linear stationary iterative methods for the force-based quasicontinuum approximation [PDF]

open access: yes, 2012
Force-based multiphysics coupling methods have become popular since they provide a simple and efficient coupling mechanism, avoiding the difficulties in formulating and implementing a consistent coupling energy.
Luskin, Mitchell Barry   +1 more
core   +1 more source

Linear types and approximation

open access: yesMathematical Structures in Computer Science, 2000
We study continuous lattices with maps that preserve all suprema rather than only directed ones. We introduce the (full) subcategory of FS-lattices, which turns out to be *-autonomous, and in fact maximal with this property. FS-lattices are studied in the presence of distributivity and algebraicity.
Huth,M., Jung,A., Keimel,K.
openaire   +3 more sources

Optimal Reactive Power Dispatch under Transmission and Distribution Coordination Based on an Accelerated Augmented Lagrangian Algorithm

open access: yesEnergies, 2022
As many distributed power sources flood into the distribution network, the relationship between transmission and distribution grids in reactive power and voltage is becoming closer and closer.
Bin Zhou   +4 more
doaj   +1 more source

Rational approximation of discrete data with asymptomatic behaviour [PDF]

open access: yes
This thesis is concerned with the least-squares approximation of discrete data that appear to exhibit asymptotic behaviour. In particular, we consider using rational functions as they are able to display a number of types of asymptotic behaviour.
Cooper, Philip
core   +4 more sources

Algorithm for calculating the normative area of an industrial enterprise land plot

open access: yesGeodesy and Cartography, 2018
In the article, the problem of finding justified approaches aimed at achieving sustainable development of urban land use is presented. In Ukraine, as in many post-Soviet countries of Eastern Europe, the transition to market relations has led to a change ...
Mykola Malashevskyi   +4 more
doaj   +1 more source

Formulations and Approximations of Branch Flow Model for General Power Networks

open access: yesJournal of Modern Power Systems and Clean Energy, 2022
The formulations and approximations of the branch flow model for general (radial and mesh) power networks (General-BranchFlow) are given in this paper.
Zhao Yuan
doaj   +1 more source

Linear Chaos and Approximation

open access: yesJournal of Approximation Theory, 2000
This work deals with the chaoticity of semigroups. Let \((T_n(t))_{t\geq 0}\) be a sequence of strongly continuous linear semigroups on Banach spaces \(X_n\) converging in the sense of Kato to a semigroup \((T(t))_{t\geq 0}\) on the Banach space \(X\). Under some assumptions, the authors show that the chaoticity of the family of the semigroup \((T_n(t))
deLaubenfels, R.   +2 more
openaire   +2 more sources

On Multiple Linear Approximations [PDF]

open access: yes, 2004
In this paper we study the long standing problem of information extraction from multiple linear approximations. We develop a formal statistical framework for block cipher attacks based on this technique and derive explicit and compact gain formulas for generalized versions of Matsui’s Algorithm 1 and Algorithm 2.
Biryukov, Alex   +2 more
openaire   +3 more sources

Linear approximation of shortest superstrings [PDF]

open access: yesProceedings of the twenty-third annual ACM symposium on Theory of computing - STOC '91, 1991
We consider the following problem: given a collection of strings s 1 ,…, s m , find the shortest string s such that each s i
Avrim Blum   +4 more
openaire   +4 more sources

Optimal approximation to unitary quantum operators with linear optics [PDF]

open access: yes, 2021
Producción CientíficaLinear optical systems acting on photon number states produce many interesting evolutions, but cannot give all the allowed quantum operations on the input state.
Gimeno, Vicent   +4 more
core   +1 more source

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