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- Zoran Levnajic, Igor Mezic
- Chaos
- 2010

We present a computational study of a visualization method for invariant sets based on ergodic partition theory, first proposed by Mezić (Ph.D. thesis, Caltech, 1994) and Mezić and Wiggins [Chaos 9, 213 (1999)]. The algorithms for computation of the time averages of observables on phase space are developed and used to provide an approximation of the… (More)

We study two-dimensional chaotic standard maps coupled along the edges of scale-free trees and tree-like subgraph (4-star) with a nonsymplectic coupling and time delay between the nodes. Apart from the chaotic and regular 2-periodic motion, the coupled map system exhibits variety of dynamical effects in a wide range of coupling strengths. This includes… (More)

- Zoran Levnajic, Bosiljka Tadic
- International Conference on Computational Science
- 2007

- Zoran Levnajic, Igor Mezic
- 2008

—————————————————————————————————————————We extend the computational visualization method proposed in [1, 2] using the concept of the harmonic time averages presented in [3]. Algorithms for frequency analysis of the phase space are constructed and implemented numerically, producing a graphical visualization of the periodic sets for a given periodicity. The… (More)

- Ömer Nebil Yaveroğlu, Noël Malod-Dognin, +5 authors Natasa Przulj
- Scientific reports
- 2014

Sophisticated methods for analysing complex networks promise to be of great benefit to almost all scientific disciplines, yet they elude us. In this work, we make fundamental methodological advances to rectify this. We discover that the interaction between a small number of roles, played by nodes in a network, can characterize a network's structure and also… (More)

- Zoran Levnajic
- ICCS
- 2008

The dynamics of coupled 2D chaotic maps with time-delay on a scalefree-tree is studied, with different types of the collective behaviors already been reported for various values of coupling strength [1]. In this work we focus on the dynamics’ time-evolution at the coupling strength of the stability threshold and examine the properties of the regularization… (More)

- Borut Luzar, Zoran Levnajic, Janez Povh, Matjaž Perc
- PloS one
- 2014

Interaction among the scientific disciplines is of vital importance in modern science. Focusing on the case of Slovenia, we study the dynamics of interdisciplinary sciences from 1960 to 2010. Our approach relies on quantifying the interdisciplinarity of research communities detected in the coauthorship network of Slovenian scientists over time. Examining… (More)

- Zoran Levnajic, Arkady Pikovsky
- Physical review letters
- 2011

We propose a novel method of reconstructing the topology and interaction functions for a general oscillator network. An ensemble of initial phases and the corresponding instantaneous frequencies is constructed by repeating random phase resets of the system dynamics. The desired details of network structure are then revealed by appropriately averaging over… (More)

- Andrea Guazzini, Daniele Vilone, Camillo Donati, Annalisa Nardi, Zoran Levnajic
- Scientific reports
- 2015

Crowdsourcing is a process of accumulating the ideas, thoughts or information from many independent participants, with aim to find the best solution for a given challenge. Modern information technologies allow for massive number of subjects to be involved in a more or less spontaneous way. Still, the full potentials of crowdsourcing are yet to be reached.… (More)

- Zoran Levnajic, Arkady Pikovsky
- Physical review. E, Statistical, nonlinear, and…
- 2010

Phase resetting curves characterize the way a system with a collective periodic behavior responds to perturbations. We consider globally coupled ensembles of Sakaguchi-Kuramoto oscillators, and use the Ott-Antonsen theory of ensemble evolution to derive the analytical phase resetting equations. We show the final phase reset value to be composed of two… (More)