Current position

I am a Juan de la Cierva Research Fellow at the Dept. Enginyeria Informatica i Matematiques at the Universitat Rovira i Virgili, Tarragona (Spain), where I joined the Alephsys group of Prof. Alex Arenas to initially work within the PLEXMATH project (until January 2016). You can find here my detailed CV.

A (non-exhaustive) list of my current activities includes:

  • the mathematical formulation of multiplex networks, the study of their structure and of dynamical processes on such systems, the study of their resilience to random or targeted pertubations
  • the formulation of an appropriate information theory of complex networks
  • the application of advanced mathematical techniques to reduce the complexity of networked systems
  • the functional representation of a system from the measurement of signals produced by its units, with application to human brain, climate change, financial stock market
I also find enough time to investigate hidden structural and dynamical patterns in complex real and virtual time-varying networks, with particular attention to social, biological and economic systems. Indeed, I develop models and simulations for human mobility, the spreading of  epidemics and of information in real-world social networks.


Recent activities

March 2012 - January 2013: Postdoctoral Research Fellow at School of Computer Science, University of Birmingham (UK). My activities dealt with the investigation of hidden patterns and outlier detection in complex real (and virtual) networks. I was also involved in the study of time-varying networks, with particular attention to social, biological and economic data. Indeed, I developed models and simulations of the spreading of epidemics and information in real-world social networks. Finally, I investigated mobility patterns of individuals, trying to predict their movements by means of multivariate nonlinear prediction, based on phase-space reconstruction of mobility traces of individuals with social ties.


January 2009 - February 2012: Ph.D. candidate in Nuclear and Particle Astrophysics at Scuola Superiore di Catania. My studies dealt with the investigation of Ultra-High Energy Cosmic Rays (UHECR). In particular, I have developed a method to determine the anisotropy of their arrival direction distribution. The method involves a multiscale procedure, based on information theory and extreme value statistics, providing high discrimination power, even in presence of strong background isotropic contamination. Moreover, I have developed a novel code to simulate the propagation UHECR in a magnetized Universe (such a code is known as HERMES).
You can find here additional details about my Ph.D. thesis (abstract, table of contents, conclusions and outlook). You can also find more about the Auger Catania Group and the Pierre Auger Observatory.

In parallel, I have developed a framework, named TSUT (Time Series UTilities), for simulating dynamical systems (stochastic or chaotic deterministic) and for nonlinear time series analysis involving fluctuation theory, information theory, extreme value theory, chaos theory and multifractal theory of complex systems. Finally, I have introduced a novel method to capture nonlinearity or nonstationarity in small and noisy time series, and I have employed multiscale fluctuation theory to investigate the complex dynamics of river flow around the world.

Past activities

In July 2008 I have got my Master degree in Subnuclear Physics (roughly equivalent to British Msc in Physics), with the thesis "Nonlinear Time Series Analysis of P. Auger's UHECR Arrival Times". The thesis work presents the results about the chaotic or stochastic nature of the dynamical system of Ultra High Energy Cosmic Rays detected at the Pierre Auger Observatory, by obtaining an autonomous set of equations from the Ginzburg-Syrovatskii transport equation. Researches were focused on the nonlinear analysis of the arrival times of those events with energy greater than 10 EeV in order to study, experimentally, nonlinearity and nonstationarity of the dynamical system they belong to. Preliminary results show a nonlinear dynamical structure emerging at energies greater than 40 EeV, putting in evidence the exciting perspective of few emitting sources with an hybrid, periodic and aperiodic, behaviour.

In November 2005 I have got my First level degree in Physics (roughly equivalent to British Bsc in Physics), with the thesis "CP and T symmetry violation in neutral Kaon-AntiKaons systems". The thesis work is about the experimental evidence of the Conjugation charge - Parity (CP) symmetry violation in neutral kaons decay, discovered by J.H. Christenson, J.W. Cronin, V.L. Fitch and R. Turley in 1964. Implications on Time (T) simmetry violation have been considered and a proof of the CPT theorem is presented in the framework of quantum relativistic mechanics. Finally, cosmological consequences of CP symmetry violation have been analyzed: by starting from the Sakharov hypotheses, the origin of the asymmetry between matter and antimatter in the universe is presented.

Personal

My Erdos number is 4, as far as I know:

I coauthored with Vito Latora, but:
Vito Latora	coauthored with	Norio Konno	MR3123211
Norio Konno	coauthored with	Tomasz Łuczak	MR3028280
Tomasz Łuczak	coauthored with	Paul Erdős	MR1166607 (94b:05169)
	

  I like almost any type of music, extended landscapes and photography. I like very much to travel. You can find my travelpod IQ here:

This Traveler IQ was calculated on Thursday, February 12, 2009 at 02:00PM GMT by comparing this person's geographical knowledge against the Web's Original 's 3,669,483 travelers who've taken the challenge.



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