Browsing by Author "Yetkin, Emrullah Fatih"
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Assesment of soft error sensitivity of power flow analysis
Yetkin, Emrullah Fatih (Gazi Univ, Fac Engineering Architecture, 2023)Today's power systems are large and interconnected to each other with many buses, lines, loads, and generators. Even the solution of a single snapshot of the system for specific conditions requires the solution of systems ... -
ON SOFT ERRORS IN THE CONJUGATE GRADIENT METHOD: SENSITIVITY AND ROBUST NUMERICAL DETECTION
Agullo, Emmanuel; Cools, Siegfried; Yetkin, Emrullah Fatih; Giraud, Luc; Schenkels, Nick; Vanroose, Wim (SIAM PUBLICATIONS, 2020)The conjugate gradient (CG) method is the most widely used iterative scheme for the solution of large sparse systems of linear equations when the matrix is symmetric positive definite. Although more than 60 years old, it ... -
Parallel implementation of iterative rational Krylov methods for model order reduction
Yetkin, Emrullah Fatih; Dağ, Hasan (IEEE, 2009)Model order reduction (MOR) techniques are getting more important in large scale computational tasks like large scale electronic circuit simulations. In this paper we present some experimental work on multiprocessor systems ... -
Recommendation of data visualization tools for non-technical people
Omran, Ahmet (Kadir Has Üniversitesi, 2019)Big data analysis and data science are promising trends. Visualization is critical part. It outlines and presents data as information from different perspectives. Consequently, leaders, decision makers, and end users will ... -
A sparsity-preserving spectral preconditioner for power flow analysis
Yetkin, Emrullah Fatih; Dağ, Hasan (TUBITAK Scientific & Technical Research Council Turkey, 2016)Due to the ever-increasing demand for more detailed and accurate power system simulations the dimensions of mathematical models increase. Although the traditional direct linear equation solvers based on LU factorization ... -
A spectral divide and conquer method based preconditioner design for power flow analysis
Dağ, Hasan; Yetkin, Emrullah Fatih (2010)Power system simulations most of the time require solution of a large sparse linear system. Traditional methods such as LU decomposition based direct methods are not suitable for parallelization in general. Thus Krylov ...