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In order to overcome the difficulties of low computational efficiency and high memory requirement in the conventional boundary element method for solving large-scale potential problems, a fast multipole boundary element method for the problems of Laplace equation is presented. through the multipole expansion and local expansion for the basic solution of the kernel function of the Laplace equati...

This paper is focused on the study of skeleton transformations involved in the hand printed & handwritten documents’ images preprocessing. A new homotropic transformation structural element is proposed in order to optimize the sequential thinning procedure: reduced number of thinning cycles and less coarse skeleton lines. Key-Words: Hand-written Character Recognition, homomorfic transformation,...

We model ferromagnetic effects by using reduced scalar potential. An overlapping domain-decomposition technique is proposed to solve the underlying problem in unbounded domain. In the near-field, adjacent to the ferromagnetic object, we employ finite element discretization, while the far-field, going to infinity, is modelled through Green representation formulas. In this way, we circumvent the ...

In this work we use of an optimized homotropic transformation structural element in order to improve the preprocessing stage for handwriting and hand printed document analysis. The homotropic transformation is use to improve the sequential thinning procedure. In that case we produce less coarse skeleton lines with a reduced number of thinning cycles. If the documents are not good enough, an ada...

The purpose of this paper is to test the applicability of a fast boundary element method in the context of geoid computations of the gravity. The fast multipole method is the method of choice due to the its advantageous property of a fast evaluation in the post-processing. Several sets of trianglar meshes for the approximation of the unit sphere and several modifications of the prediscribed dat...

Recent advances in physics-based sound synthesis have offered huge possibilities for the creation of new musical instruments. However, its higher computational complexity compared to signal modeling has limited its use in real-time applications. This has motivated research on parallel processing architectures that support the physics-based sound synthesis of musical instruments. This paper pres...

Most plastid genes are part of operons and expressed as polycistronic mRNAs. Many primary polycistronic transcripts undergo post-transcriptional processing in monocistronic or oligocistronic units. At least some polycistronic transcripts are not translatable, and endonucleolytic processing may therefore be a prerequisite for translation to occur. As the requirements for intercistronic mRNA proc...

In an attempt to elucidate the underlying longevity-promoting mechanisms of mutants lacking SCH9, which live three times as long as wild type chronologically, we measured their time-course gene expression profiles. We interpreted their expression time differences by statistical inferences based on prior biological knowledge, and identified the following significant changes: (i) between 12 and 2...