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- Lúıs Amaral, A . Scala, Maud Barthélémy, H. Eugene Stanley
- Proceedings of the National Academy of Sciences…
- 2000

We study the statistical properties of a variety of diverse real-world networks. We present evidence of the occurrence of three classes of small-world networks: (a) scale-free networks, characterized by a vertex connectivity distribution that decays as a power law; (b) broad-scale networks, characterized by a connectivity distribution that has a power law… (More)

- Pietro Auconi, Guido Caldarelli, A . Scala, Gaetano Ierardo, Antonella Polimeni
- Orthodontics & craniofacial research
- 2011

BACKGROUND
Network analysis, a recent advancement in complexity science, enables understanding of the properties of complex biological processes characterized by the interaction, adaptive regulation, and coordination of a large number of participating components.
OBJECTIVE
We applied network analysis to orthodontics to detect and visualize the most… (More)

- Luca Angelani, Di Leonardo R, Giancarlo Ruocco, A . Scala, Francesco Sciortino
- Physical review letters
- 2000

We numerically investigate the supercooled dynamics of two simple model liquids exploiting the partition of the multidimensional configuration space in basins of attraction of the stationary points (inherent saddles) of the potential energy surface. We find that the inherent saddle order and potential energy are well-defined functions of the temperature T.… (More)

- Anna Skibinsky, Sergey V. Buldyrev, A . Scala, Shlomo Havlin, H. Eugene Stanley
- Physical review. E, Statistical physics, plasmas…
- 1999

We investigate the formation of a two-dimensional quasicrystal in a monodisperse system, using molecular dynamics simulations of hard-sphere particles interacting via a two-dimensional square-well potential. We find that more than one stable crystalline phase can form for certain values of the square-well parameters. Quenching the liquid phase at a very low… (More)

- Francis W Starr, Srikanth Sastry, Emilia La Nave, A . Scala, H. Eugene Stanley, Francesco Sciortino
- Physical review. E, Statistical, nonlinear, and…
- 2001

Relations between the thermodynamics and dynamics of supercooled liquids approaching a glass transition is a topic of considerable interest. The potential energy surface of model liquids has been increasingly studied, since it provides a connection between the configurational component of the partition function on the one hand, and the system dynamics on… (More)

- Emilia La Nave, A . Scala, Francis W Starr, H. Eugene Stanley, Francesco Sciortino
- Physical review. E, Statistical, nonlinear, and…
- 2001

We study the potential energy surface (PES) sampled by a liquid modeled via the widely studied extended simple point charge (SPC/E) model for water. We characterize the curvature of the PES by calculating the instantaneous normal mode (INM) spectrum for a wide range of densities and temperatures. We discuss the information contained in the INM density of… (More)

- A . Scala, M. Reza Sadr-Lahijany, Nicolas Giovambattista, Sergey V. Buldyrev, H. Eugene Stanley
- Physical review. E, Statistical, nonlinear, and…
- 2001

We use molecular-dynamics simulations in two dimensions to investigate the possibility that a core-softened potential can reproduce static and dynamic anomalies found experimentally in liquid water: (i) the increase in specific volume upon cooling, (ii) the increase in isothermal compressibility upon cooling, and (iii) the increase in the diffusion… (More)

- Francesco Sciortino, Emilia La Nave, A . Scala, H. Eugene Stanley, Francis W Starr
- The European physical journal. E, Soft matter
- 2002

We present an overview of the recent studies on the properties of the potential energy surface for a simple model of water. We emphasize the relations between PES properties and dynamics in supercooled states for the model and discuss possible future application of the PES studies.

- M. Reza Sadr-Lahijany, A . Scala, Sergey V. Buldyrev, H. Eugene Stanley
- Physical review. E, Statistical physics, plasmas…
- 1999

We use a one-dimensional (1D) core-softened potential to develop a physical picture for some of the anomalies present in liquid water. The core-softened potential mimics the effect of hydrogen bonding. The interest in the 1D system stems from the facts that closed-form results are possible and that the qualitative behavior in 1D is reproduced in the liquid… (More)

- Albert, Halyun Jeong, +8 authors Random
- 2009

References [1] R. Albert and A.L. Barabási. Statistical mechanics of complex networks. Rev. Mod. Phys., 74:47–97, 2002. [2] R. Albert, H. Jeong, and A.-L. Barabási. Diameter of the World-Wide Web. Nature, 401:130–131, 1999. [3] R. Albert, H. Jeong, and A.-L. Barabási. Attack and error tolerance in complex networks. Nature, 406:378–381, 2000. [4] L. A. N.… (More)