In this paper, we empirically investigate the dynamics of the marginal propensity to pirate for computer software. We introduce a state space formulation that allows us to estimate error structures and parameter significance, in contrast to previous work. For data from 1987-92, we find a rising...

The diffusion of knowledge generates positive externalities if knowledge flows increase the productivity of Research and Development (R&D) by the recipients of these flows. This paper investigates the extent to which this positive spillover effect of knowledge diffusion depends on the similarity...

This paper uses a model (consisting of a linear estimate of a demand curve, a linear quadratic cost curve and a logistic diffusion curve) and four types of imperfectly competitive behaviour — monopolistic intertemporal profit maximization, a dynamic Bertrand oligopoly, and a duopolistic...

Social conformity can spread social norms and behaviors through a society. This research examines such a process geographically and over time for voting, which is strongly influenced by the norm that citizens should vote. A mathematical model for the spread of voting participation under the...

We analyze the state of the art of indicators on eGovernment, eHealth, eProcurement and ePartecipation. We survey the main methodological properties of these indicators, and uncover the principal stylized facts and trends; at the same time, we highlight their heuristic limits and potential...

The present article tries to show the way of a review, the Estudios Cooperativos (REVESCO) to try to speak of its present, but also of its future. Of the future of an academic, noted and subjected magazine to a continuous evaluation and revision that it tries to place it among the best magazines...

In the first part of this article, a short description of the most popular models of two competing technologies (the Fisher-Pry model and its modifications proposed by Blackman, Floyd, Sharif and Kabir) and the multi technological substitution models of Peterka and Marchetti-Nakiæenoviæ are...

Social interaction combined with social conformity spreads attitudes and behaviors through a society. This paper examines such a process geographically for compliance with the norm that good citizens should vote. The diffusion of conformist behavior affects the local degree of conformity with...

This article presents a model of macroeconomic growth that combines in a single formalization two complementary views on innovation and economic growth, the technology-gap approach and the Kaldorian theory of cumulative causation. The model suggests that what matters for economic growth in the...

We propose a difference-differential equation that reflects interactions between innovation and imitation processes to describe the evolution of the distribution curve of firms by efficiency levels. An explicit solution of this equation is obtained for arbitrary finite initial conditions. It is...