Igor Balaž
University of Novi Sad
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Publication
Featured researches published by Igor Balaž.
Modern Physics Letters B | 2011
Dragutin T. Mihailovic; Mirko Budinčević; Igor Balaž; Anja Mihailović
Communication between cells is realized by exchange of biochemical substances. Due to internal organization of living systems and variability of external parameters, the exchange is heavily influenced by perturbations of various parameters at almost all stages of the process. Since communication is one of essential processes for functioning of living systems it is of interest to investigate conditions for its stability. Using previously developed simplified model of bacterial communication in a form of coupled difference logistic equations we investigate stability of exchange of signaling molecules under variability of internal and external parameters.
Central European Journal of Physics | 2013
Dragutin T. Mihailovic; Igor Balaž; Ilija Arsenić
In this paper we numerically investigate a model of a diffusively coupled ring of cells. To model the dynamics of individual cells we propose a map with cell affinity, which is a generalization of the logistic map. First, the basic features of a one-cell system are studied in terms of the Lyapunov exponent, Kolmogorov complexity and Sample Entropy. Second, the notion of observational heterarchy, which is a perpetual negotiation process between different levels of the description of a phenomenon, is reviewed. After these preliminaries, we study how the active coupling induced by the consideration of the observational heterarchy modifies the synchronization property of the model with N=100 cells. It is shown numerically that the active coupling enhances synchronization of biochemical substance exchange in several different conditions of cell affinity.
Modern Physics Letters B | 2012
Dragutin T. Mihailovic; Igor Balaž
In this paper, Mihailovic et al. [Mod. Phys. Lett. B25 (2011) 2407–2417] introduce a simplified model of cell communication in a form of coupled difference logistic equations. Then we investigated stability of exchange of signaling molecules under variability of internal and external parameters. However, we have not touched questions about synchronization and effect of noise on biochemical substance exchange between cells. In this paper, we consider synchronization in intercellular exchange in dependence of environmental and cell intrinsic parameters by analyzing the largest Lyapunov exponent, cross sample entropy and bifurcation maps.
Chaos Solitons & Fractals | 2016
Dragutin T. Mihailovic; Vladimir Kostić; Igor Balaž; Darko Kapor
Abstract We explore how the biochemical substance exchange through tunneling nanotubes (TNTs) affects the functional stability of a multicellular system. We focus on two questions: whether TNTs can either stabilize or destabilize intercellular communication governed by gap junctions (GJs)? and how to determine the threshold at which influence of TNTs destabilize GJ-mediated communication? The goal of this article is to introduce the way in which the concept of pseudospectra can be used to provide the answers.
Modern Physics Letters B | 2012
Dragutin T. Mihailovic; Igor Balaž
In this paper, we shortly summarized current attitudes about time in biology and then we considered the functional time and the way of its emergence. To illustrate that, we chose the simulation of forming the functional time in the process of biochemical substance exchange between three cells in a multicellular system. For that purpose π-cell coordinate system is introduced. Finally, we established a functional time barcode which is a representation of system states through the chronological time, which shows data about the process of intercellular biochemical substance exchange to which it attaches. It represents states by varying the widths and spaces of parallel lines, where system is either synchronized or not.
Chaos Solitons & Fractals | 2012
Dragutin T. Mihailovic; Mirko Budinčević; Dušanka Perišić; Igor Balaž
Chaos Solitons & Fractals | 2014
Dragutin T. Mihailovic; Vladimir Kostić; Igor Balaž; Ljiljana Cvetković
Proceedings of the 9th International Symposium on Interdisciplinary Regional Research | 2008
Siniša Crvenković; Dragutin T. Mihailovic; Igor Balaž
International Journal of Artificial Life Research | 2012
Koji Sawa; Tomohiro Shirakawa; Igor Balaž
Archive | 2012
Dragutin T. Mihailovic; Igor Balaž