Workshop on Dynamical Processes on Complex Networks

May 13 – 17, 2024

ICTP-SAIFR, São Paulo, Brazil

IFT-UNESP Auditorium

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Complex systems are characterized by a large number of units, such as particles, individuals or neurons, that interact typically with a few neighbors but lead to the emergence of large-scale collective behavior. Examples include swarms of birds, the spreading of infectious diseases, the transmission of electric impulses by neurons, and the synchronization of fireflies at nightfall. Networks provide a natural representation of these systems, where nodes play the role of the units, and links between nodes indicate pairwise interactions. The distribution of links among the nodes is a key property of networks, defining how the units of the system interact. Links may follow simple rules, such as regular lattices or random connections, or may be highly heterogeneous, displaying power law distributions. More recently, the concepts of multilayer and higher-order networks have emerged to describe interconnected sets of networks and many-body interactions, where single-layer networks are generalized to simplicial complexes or hypergraphs.

Two of these processes have become particularly important and will be the focus of this workshop in terms of applications.  The first is the spreading of infectious diseases and the dissemination of information. As disease and information propagation depend critically on the network of contacts between people, understanding how the topology of these networks affects the spreading and how that, in turn, modifies the network via quarantine, vaccination, use of masks, or death, has become a major topic of research.  A second topic to be discussed in the workshop is the synchronization of coupled oscillators. Understanding how independent oscillators synchronize their motion when coupled together has become an important area of research, both in terms of applications to neuronal dynamics and swarms, and to basic science, characterizing its phase transitions, hysteresis, and dynamical properties. We will also devote time to discussing the structure of higher-order representations of real systems and what changes they induce in the outcomes of the previous dynamical processes.

There is no registration fee and limited funds are available for local expenses.

Organizers:

  • Marcus A.M. de Aguiar (IFGW-UNICAMP)
  • Hilda Cerdeira (IFT-UNESP)
  • Roberto Kraenkel (IFT-UNESP)
  • Yamir Moreno (BIFI-Zaragoza/CENTAI)
  • Francisco Rodrigues (ICMC-USP)

List of participants: Updated on May 21, 2024.

 

Announcement:

Registration is now closed

Invited Speakers

Confirmed Speakers:

  • Marco Ajelli (Indiana University Bloomington, USA): Computational tools to respond to health emergencies
  • Celia Anteneodo  (PUC – Rio de Janeiro, Brazil): Opinion dynamics in complex networks
  • Guilherme Ferraz de Arruda (CENTAI Institute, Italy): Contagion models on higher-order networks
  • Marcelo Avila (Universidad Mayor de San Andrés, Bolivia): Firefly flashing behavior as a paradigmatic example of synchronization in complex networks: from simple inevitable sync to mobile oscillators
  • Antonio Batista (Universidade Estadual de Ponta Grossa, Brazil): Chimera states in neuronal networks
  • Jose Antonio Mendez-Bermúdez (Universidad Autónoma de Puebla, Mexico): "Scaling properties of directed multilayer random networks: A Random Matrix Theory approach"
  • Stefano Boccaletti (CNR- Institute for Complex Systems, Italy): Describing the transition to synchronization of networked systems: revealing (and controlling) clusters and modular behavior
  • Timoteo Carletti (Namur Institute for Complex Systems, Belgium): Global Synchronization on networks and beyond
  • Gabriela Castellano (Universidade Estadual de Campinas, Brazil): Complex networks to understand brain re/organization in motor rehabilitation and brain-computer interfaces
  • Fernando Ferreira Fagundes (USP, Brazil): Exploring Networks in Modeling Complex Systems:
    Examples in Economic and Agricultural Systems
  • Kelly Iarosz (Centro Universitário de Tel. Borba, Brazil): Plasticity: an incredible brain capacity
  • Sarika Jalan (Indian Institule of Technology, India): Phase oscillators with higher order interactions: rotating clusters
  • Alberto Aleta (University of Zaragoza, Spain): The unequal effects of the health-economy tradeoff during the COVID-19 pandemic
  • Andre Martins (USP Leste, Brazil): The coevolution of opinions and networks
  • Adilson Motter  (Northwesten University, USA): Complex Contagion: Unfolding and Control
  • Camilo Neto (USP Leste, Brazil): Structure and robustness of Sao Paulo public transport network
  • Tiago Pereira (Universidade de Sao Paulo, Brazil): Emergent chaos in the Turing-Smale problem
  • Gaël Rosain Simo (University of Ebolowa, Cameroon): Collective behaviors in neuronal networks under the actions of electric and magnetic fields
  • Ricardo Viana (Universidade Federal do Parana, Brazil): Phase and frequency synchronization of nonlocally coupled oscillators
  • Jean-Gabriel Young (University of Vermont, USA): Complex or simple? Determining a contagion’s type from observational data.

Abstracts: HERE

Short Talks

Monday 11:30 – 12:00
Kishore Dutta (Handique Girls’ College Guwahati, India): Evolving networks for realization of cultural evolution.
Fernando da Silva (State University of New York, USA): Self-sustained activity and intermittent synchronization in balanced networks.

Monday 17:00 – 17:30
Pablo Padilla (Institute for Applied Mathematics UNAM, Mexico): Understanding musical style with complex networks.
Guilherme Costa (ICTP-SAIFR / IFT-UNESP, Brazil): The influence of external drives on the frustrated Kuramoto model.
Rodrigo da Motta (UFABC, Brazil): A novel method to investigate neurodevelopment using Ising temperature and graph neural networks.
Bruno Rafael R. Boaretto (Unifesp, Brazil): Emergence of phase synchronization in sparse neuronal networks under Poissonian spike inputs.

Tuesday 11:30 – 12:00
João Lizárraga (UNICAMP, Brazil): Active and chaotic swarmalators.
Matheus Palmero (IFUSP, Brazil): Recurrent chaotic trajectories in a time-dependent potential well model.

Tuesday 17:00 – 17:30
Juliane Teixeira (UFV, Brazil): Visibility graphs for non-equilibrium phase transitions.
Thomas Peron (ICMC-USP, Brazil): Synchronization in high dimensions: mean-field theory of vector spin models on networks with arbitrary degree distributions.
Rodrigo Malavazi (USP, Brazil): The spark of synchronization in heterogeneous networks of chaotic maps.
Paulo Cesar Ventura (Indiana University, USA): Combining within and between-host epidemic dynamics in a multiplex synthetic population.

Thursday 11:30 – 12:00
Federico Sevlever (INEU – Fleni – CONICET, Argentina): Defining network topologies that can achieve molecular memory.
Leonardo dos Santos (UFRGS, Brazil): A random matrix model for the stability of heterogeneous Ornstein-Uhlenbeck processes on top of highly connected networks.

Friday 11:30 – 12:15

Dario Agudelo (Universidad Autónoma de Manizales, Colombia): Analysis of dynamic networks based on the Ising model for the case of study of co-authorship of scientific articles
Gabriel Marghoti (UFPR, Brazil): Beat frequency induced transitions in synchronization dynamics.
Emanuel Teixeira (UFRGS, Brazil): A single active ring model with velocity self-alignment.

 

Format: 15 min

Abstracts: HERE

Posters

  • Noris Melis de la Cruz (INFAP-UNSL, Argentina): Standard and inverse site percolation of triangular tiles on triangular lattices: Isotropic and perfectly oriented deposition and removal.
  • Ricardo Tetti Camacho (ICMC/USP, Brazil): Epidemic processes of a system of mobile agents in a heterogeneous landscape.
  • Luiza Lober de Souza Piva (USP, Brazil): Discovering rumor propagation dynamics through regression techniques.
  • Victor Sanchez (Unicamp, Brazil): Global properties of the human brain at rest collected with near-infrared spectroscopy.
  • Lucas De Lazari E Ferreira (IGCE-UNESP, Brazil): Characterization of basins of attraction in 1D models and the extrapolation for higher dimension.
  • Eric Rozán (Balseiro Institute, Argentina): Testing lockdown measures in epidemic outbreaks through mean-field models considering the social structure.
  • Hugo Pereira Maia (UFV, Brazil): Polarization and radicalization dynamics: Hyperpartisanship and echo-chamber effects in brazilian political networks.
  • Armando José Gomes Abrantes Ferreira (PPgEE/UFCG, Brazil): Investigation of the role of the coupling function in the synchronization a system of two coupled oscillators with application to the design of a Pre-synchronization Strategy for Grid-Forming Inverters.
  • Lucas Eduardo (UEPG, Brazil): The roles of Potassium and Calcium Currents in a Neuronal Network.
  • Diogo Leonai Souza (UEPG, Brazil): Spontaneous spiral waves in a neuronal network.
  • Vitor Hugo (UFPR, Brazil): Epidemiological model based on networks with non-local coupling.
  • Paulo Ricardo Protachevicz (USP, Brazil): How synchronized firing patterns emerge and shape neuronal network connectivity.
  • Norma Valencio (UFSCar/DCAM): Achievement of the Sustainable Development Goals in the context of dealing with Disasters: sociological analysis based on the use of ML algorithms.

 

Participants MUST BRING THE BANNER PRINTED.

For details about the poster presentation please look at the correspondent Additional Information topic.

Registration

 

Announcement:

Registration is now closed

 

Program

Workshop Program: PDF

Abstracts: HERE

Videos and Files

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Minicourse on perturbative and nonperturbative treatment of quantum gravity problems

Additional Information

Attention! Some participants in ICTP-SAIFR activities have received email from fake travel agencies asking for credit card information. All communication with participants will be made by ICTP-SAIFR staff using an e-mail “@ictp-saifr.org”. We will not send any mailings about accommodation that require a credit card number or any sort of deposit.

BOARDING PASS: All participants, whose travel has been provided or will be reimbursed by ICTP-SAIFR, should bring the boarding pass  upon registration. The return boarding pass (PDF, if online check-in, scan or picture, if physical) should be sent to secretary@ictp-saifr.org by e-mail.

COVID-19: Brazilians and foreigners no longer have to present proof of vaccination before entering the country.

Visa information: Nationals from several countries in Latin America and Europe are exempt from tourist visa. Nationals from Australia, Canada and USA are exempt from tourist visa until April 10, 2025. Please check here which nationals need a tourist visa to enter Brazil.

Accommodation: Participants, whose accommodation will be provided by the institute, will stay at The Universe Flat. Hotel recommendations are available here.

How to reach the Institute: The school will be held at ICTP South American Institute, located at IFT-UNESP, which is across the street from a major bus and subway terminal (Terminal Barra Funda). The address which is closer to the entrance of the IFT-UNESP building is R. Jornalista Aloysio Biondi, 120 – Barra Funda, São Paulo. The easiest way to reach us is by subway or bus, please find instructions here.

Poster presentation: Participants who are presenting a poster MUST BRING A PRINTED BANNER . The banner size should be at most 1 m (width) x 1,5 m (length). We do not accept A4 or A3 paper. Click here to see what a banner looks like: http://designplast.ind.br/produtos/detalhe/impressao-digital/banner/119/9