This article addresses a relevant question arising in <i>knowledge-intensive industries: modelling productivity</i>; an important issue of increasing importance in developed economies, (Drucker [Drucker, P. 1999. Knowledge-worker productivity: the biggest challenge. <i>California Management Review</i>.],...

This paper presents a first attempt at an integrated Service Science (SS) and Viable Systems Approach (VSA) analysis of the real-world phenomenon of changing jobs roles. Changing job roles is important to quality of life and yet understudied by systems scientists. Today, individuals changing...

Organizational Learning (OL) is a scientific field characterized by a long history and growing interest, so to be considered a core and promising concept in theory and practice related to the management and the organization of work. This paper addresses the two main issues that have been...

A two-dimensional Cellular Automata model is proposed to simulate the exit dynamics of occupant evacuation. Concerning the exit width and the door separation, we put forward some useful standpoints: (1) exit width should be bigger than a critical value, and the door separation should be neither...

We analyze the hitting time distributions of stock price returns in different time windows, characterized by different levels of noise present in the market. The study has been performed on two sets of data from US markets. The first one is composed by daily price of 1071 stocks trade for the...

Polyelectrolytes are of great importance in different branches of chemistry and biology. DNA is a very good example of a polyelectrolyte of biological relevance. In this paper, we describe DNA solutions in the presence of multivalent salts and amphiphiles. After thermodynamic equilibrium is...

Complex systems may show strongly non-exponential relaxation, the origins of these behavior seem to be related to the fractal structure of the phase space. In this article, we consider the diffusion on a dilute hypercube, this stochastic process is a coarse-grained model for the time evolution...

The price time series of the Italian government bonds (BTP) futures is studied by means of scaling concepts originally developed for random walks in statistical physics. The series of overnight price differences is mapped onto a one-dimensional random walk: the bond walk. The analysis of the...

Differently from theoretical scale-free networks, most real networks present multi-scale behavior, with nodes structured in different types of functional groups and communities. While the majority of approaches for classification of nodes in a complex network has relied on local measurements of...

We study the susceptible–infected–recovered (SIR) model in complex networks, considering that not all individuals in the population interact in the same way. This heterogeneity between contacts is modeled by a continuous disorder. In our model, the disorder represents the contact time or the...