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pro vyhledávání: '"Ulla Miekkala"'
Advanced mathematical skills and relating factors of engineering applicants: a cross-sectional study
Higher education institutions assess applicants with entrance examinations as a way to identify and rank those applicants with adequate ability to proceed in their studies. Engineering students form a significant group of higher education students, b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1e4f373d9a85b0bcd7fff20693347a9
https://hdl.handle.net/2117/383914
https://hdl.handle.net/2117/383914
Autor:
Ulla Miekkala
Publikováno v:
Journal of Computational and Applied Mathematics. 88:349-361
By studying the superlinear convergence of waveform relaxation method on finite time intervals, it has formerly been shown, by using the theory of quasinilpotent operators, that the convergence properties are largely determined by the graph propertie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a5388ac94ed5a72da4c2d1a8dac6906
https://doi.org/10.1016/s0377-0427(97)00224-0
https://doi.org/10.1016/s0377-0427(97)00224-0
Autor:
Ulla Miekkala, Olavi Nevanlinna
Publikováno v:
Acta Numerica. 5:259-307
Parallel processing has made iterative methods an attractive alternative for solving large systems of initial value problems. Iterative methods for initial value problems have a history of more than a century, and in the works of Picard (1893) and Li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a66262a14b69912c0063232e0cb1b38
https://doi.org/10.1017/s096249290000266x
https://doi.org/10.1017/s096249290000266x
Autor:
Ulla Miekkala
Publikováno v:
BIT. 33:485-495
With any undirected, connected graphG containing no self-loops one can associate the Laplacian matrixL(G). It is also the (singular) admittance matrix of a resistive network with all conductances taken to be unity. While solving the linear system inv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::137cb923836271eb53d6be1c49d7e629
https://doi.org/10.1007/bf01990530
https://doi.org/10.1007/bf01990530
Autor:
Ulla Miekkala, Olavi Nevanlinna
Publikováno v:
Numerical Functional Analysis and Optimization. 13:203-221
The superlinear convergence of Picard-Lindelof iteration on finite time intervals is studied by considering the resolvent operator as an operator-valued entire function. The main conclusions of this paper are related to the following fact: the conver
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3e7646ca675b5bc6d65100f26faa1d4
https://doi.org/10.1080/01630569208816471
https://doi.org/10.1080/01630569208816471
Publikováno v:
IMPACT of Computing in Science and Engineering. 3:123-145
Recent techniques for the convergence analysis of Picard-Lindelof iteration are applied to linear RC-circuits. A particular decomposition technique is presented which always leads to a convergent process.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::059b63b55227846cf0ef08156cf20ff5
https://doi.org/10.1016/0899-8248(91)90012-j
https://doi.org/10.1016/0899-8248(91)90012-j
Autor:
Olavi Nevanlinna, Ulla Miekkala
Publikováno v:
SIAM Journal on Scientific and Statistical Computing. 8:459-482
In VLSI-simulation there has recently been interest in an iterative technique called the waveform relaxation method. In this paper we set up a theoretical framework to analyze the convergence of such methods. We restrict the discussion to linear syst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ec9a20623f9d33e30574520413cb34c
https://doi.org/10.1137/0908046
https://doi.org/10.1137/0908046
Autor:
Ulla Miekkala
Publikováno v:
Journal of Computational and Applied Mathematics. (2):133-151
We continue the study of the convergence of dynamic iteration methods by applying them to linear DAE systems. We show that convergence rate can be studied by similar means as for ODE's and that it is critical for convergence to preserve the structure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0434aeb50cecdf87e64aee8e4131e8be
Conference
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Conference
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