We have extended the many-body potential of Hauschild and Prausnitz (1993) in terms of the non-additivity coefficient and density (at different temperatures from liquid phase to supercritical region) for pure fluids. In order to compare our many-body potential with the accurate three-body...

Airport network has a nontrivial impact on shaping the development of a country or region, and decision makers or researchers can benefit from its evolution characteristics. This paper presents an exploratory analysis on the evolution of the US airport network from 1990 to 2010. Generally, we...

Modeling social tagging plays a critical role in identifying statistical regularities and structural principles common to social tagging systems. Existing modeling approaches only consider imitations or background knowledge of users. However, common interests among users are ignored. In this...

International oil trade is a subset of global trade and there exist oil trade communities. These communities evolve over time and provide clues of international oil trade patterns. A better understanding of the international oil trade patterns is necessary for governments in policy making. To...

Using an analogy between the density expansion of the transport coefficients of moderately dense gases and the inverse-Knudsen-number expansion of the drag on objects in nearly free molecular flows, we formulate the collision integrals that determine the first correction term to the...

The availability of huge volume of financial data has offered the possibility for understanding the markets as a complex system characterized by several stylized facts. Here we first show that the time evolution of the Japan’s Nikkei stock average index (Nikkei 225) futures follows the...

The work deals with a theoretical study of magnetoelastic properties of soft composite materials, consisting of a polymer matrix filled with micron-sized magnetizable particles (ferrogels and ferroelastomers). The systems with a homogeneous gas-like spatial distribution of particles in the...

We study a Fermi–Pasta–Ulam-like chain with Lennard-Jones potentials to model a unidimensional solid in contact with heat baths at a given temperature. We formulate an explicit analytical expression for the probability density of bonding distances between neighboring particles, which depends...

In this paper, we investigate the CO2 emission in a traffic flow mixed with multi-class vehicles by use of an improved optimal velocity model with different vehicles. We explore numerically the dependence of the total CO2 emission rate and the additional CO2 emission on the variation of the...

The origin of evolutionary cooperation among individuals remains an unsolved issue across several disciplines; especially, the relation between the population structure and the emergence of cooperation is the key of the issue. Community structure is ubiquitous in social and biological networks....