Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Maciej Paszyn"'
Autor:
Anna Paszyńska, Maciej Paszyński
Publikováno v:
Symmetry, Vol 12, Iss 12, p 2070 (2020)
In this paper, we consider the computational cost of a multi-frontal direct solver used for the factorization of matrices resulting from a discretization of isogeometric analysis with T-splines, and analysis-suitable T-splines. We start from model pr
Externí odkaz:
https://doaj.org/article/029f30d5a65a43afbe8eb049b4c13c0a
Publikováno v:
Computer Science, Vol 16, Iss 1, p 75 (2015)
This paper describes the application of hypergraph grammars to drive linear computationalcost solver for grids with point singularities. Such graph grammar productions are the rstmathematical formalism used to describe solver algorithm and each of th
Externí odkaz:
https://doaj.org/article/ff0a136398994769824127c051639c90
Publikováno v:
Computer Science, Vol 14, Iss 3, p 367 (2013)
The paper tackles the application of evolutionary multi-agent computing to solving inverse problems. High costs of fitness function call become a major difficulty when approachingthese problems with population-based heuristics, however evolutionary a
Externí odkaz:
https://doaj.org/article/9f30755be3734ccc82dc491a0963a0cf
Publikováno v:
Computer Science, Vol 14, Iss 1, p 97 (2013)
In this paper we utilize the concept of the L2 and H1 projections used toadaptively generate a continuous approximation of an input material data inthe finite element (FE) base. This approximation, along with a correspondingFE mesh, can be used as m
Externí odkaz:
https://doaj.org/article/f57d6098fa1c4cbe8367a74b12bfa0d8
Publikováno v:
Computer Science, Vol 14, Iss 4, p 589 (2013)
In this paper we present multi-frontal direct solver for one dimensional isogeometric finiteelement method. The solver implementation is based on graph-grammar (GG) model. TheGG model allows to express the entire solver algorithm, including generati
Externí odkaz:
https://doaj.org/article/fa114e8dbec84b97a82175278cf736a6
Publikováno v:
Computer Science, Vol 14, Iss 4, p 629 (2013)
In this paper we present resistivity logging measurement simulation with the usage of two types of borehole logging devices: operating with zero frequency (direct current, DC) and those operating with higher frequencies (alternate current, AC). We pe
Externí odkaz:
https://doaj.org/article/bcb701f36e8341f5a3f19c644bbc9a36
Autor:
Maciej Paszyński
Publikováno v:
Computer Science, Vol 12, p 63 (2011)
The paper presents the analysis of the iterative solvers utilized to solve the non-linear problemof Step-and-Flash Imprint Lithography (SFIL) a modern patterning process. The simulationsconsists in solving molecular statics problem for the polymer ne
Externí odkaz:
https://doaj.org/article/d2009493a47644889387657912b7f846
Publikováno v:
Computer Science, Vol 12, p 85 (2011)
This paper describes the concurrent multi-frontal direct solver algorithm for a multi-physicsFinite Element Method (FEM). The multi-physics FEM utilizes different element sizes aswell as polynomial orders of approximation over element edges, faces, a
Externí odkaz:
https://doaj.org/article/4348d7be17ad4c6499752285a91f7f17
Autor:
Maciej Paszyński
Publikováno v:
Computer Science, Vol 11, p 81 (2010)
This paper considers the communication patterns arising from the partition of geometricaldomain into sub-domains, when data is exchanged between processors assigned to adjacentsub-domains. It presents the algorithm constructing bipartite graphs cover
Externí odkaz:
https://doaj.org/article/17eac32ac9b2437aa35034749add859b
Publikováno v:
Computer Science, Vol 11, p 65 (2010)
In this paper we present the Petri net setting the optimal order of elimination for directsolver working with hp refined finite finite element meshes. The computational mesh is representedby a graph, with graph vertices corresponding to finite elemen
Externí odkaz:
https://doaj.org/article/f7fae9ca78704936b22be05843b3ec17