
prof. dr hab. Grzegorz Graff
Employment
- Head of Doctoral Studies at Faculty of Applied Physics and Mathematics
- Profesor at Instytut Matematyki Stosowanej
- Vice-Dean for Scientific Research at Faculty of Applied Physics and Mathematics
Social media
Contact
- grzegorz.graff@pg.edu.pl
Profesor
- Workplace
- Gmach B pokój 610
- Phone
- (58) 347 22 49
Head of Doctoral Studies
- Workplace
- Gmach Główny pokój 103 B
- Phone
- (58) 347 13 10
Vice-Dean for Scientific Research
- Workplace
- Gmach Główny pokój 103 B
- Phone
- (58) 347 13 10
Publication showcase
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Ordinal pattern statistics for the assessment of heart rate variability
The recognition of all main features of a healthy heart rhythm (the so-called sinus rhythm) is still one of the biggest challenges in contemporary cardiology. Recently the interesting physiological phenomenon of heart rate asymmetry has been observed. This phenomenon is related to unbalanced contributions of heart rate decelerations and accelerations to heart rate variability. In this paper we apply methods based on the concept...
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Relationship between heart rate variability, blood pressure and arterial wall properties during air and oxygen breathing in healthy subjects
Previous studies reported that normobaric hyperoxia influences heart rate, arterial pressure, cardiac output and systemic vascular resistance, but the mechanisms underlying these changes are still not fully understood. Several factors are considered including degeneration of endothelium-derived nitric oxide by reactive oxygen species, the impact of oxygen-free radicals on tissues and alterations of autonomic nervous system function....
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Fixed point indices of iterated smooth maps in arbitrary dimension
We give a complete description of possible sequences ofindices of iterations of f at an isolated fixed point, answering inaffirmative the Chow, Mallet-Paret and Yorke conjecture posed in[S.N. Chow, J. Mallet-Parret, J.A. Yorke, A periodic point index whichis a bifurcation invariant, in: Geometric Dynamics, Rio de Janeiro,1981, in: Lecture Notes in Math., vol. 1007, Springer, Berlin, 1983,pp. 109-131].
Obtained scientific degrees/titles
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2010-04-09
Obtained science degree
dr hab. Mathematics (Mathematics)Uniwersyteet Adama Mickiewicza
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