Innovation diffusion theory provides a useful perspective on one of the most persistently challenging topics in the IT field, namely, how to improve technology assessment, adoption and implementation. For this reason, diffusion is growing in popularity as a reference theory for empirical studies of information technology adoption and diffusion, although no comprehensive review of this body of w...

We study gas diffusion through computer-generated random fibre networks using random walk simulations. The simulation results are consistent with steady-state experiments. The comparison of the simulated time-dependent diffusion flux with one-dimensional diffusion theory suggests that the latter is invalid at low porosities and low thicknesses. We also find that, if sorption is relevant, steady...

Recent research identifies stochastic dominance as critical for understanding the relationship between network structure and diffusion. This paper introduces the concept of stochastic dominance, explains the theory linking stochastic dominance and diffusion, and applies this theory to a number of diffusion studies in the literature. The paper illustrates how the theory connects observations fro...

Lateral diffusion of lipids in biological membranes may be influenced by polypeptides, proteins, and other nonlipid membrane constituents. Using concepts from scaled-particle theory, we extend the free-volume model for lipid diffusion to membranes having an arbitrarily large number of components. This theory clarifies the interpretation of the free-volume theory, better reproduces the free-area...

Transmittance and reflectance from spruce wood and bovine ligamentum nuchae as two different fibrous media are examined by time-of-flight spectroscopy for varying source detector separations and several orientations of the fibers in the sample. The anisotropic diffusion theory is used to obtain the absorption coefficient and the diffusion coefficients parallel and perpendicular to the fibers. T...

The aim of this paper is to present confirmation of the theory of the diffusion effect. By diffusion effect is understood a redistribution of the ions in a system where a continuous diffusion of one electrolyte is going on, which results in a steady state showing accumulation and impoverishment of certain ions. Some typical experiments are recorded and discussed. The results are found in satisf...

This paper aims to provide some guidelines for operators involved in local development related to the creation and management of territorial networks as critical tools to foster forms of efficient, effective and sustainable local development. Some models of local territorial networks’ structure and dynamics are described on the basis of the contributions of the complex networks’ theories. The d...

Most of the physically based techniques for rendering translucent objects use the diffusion theory of light scattering in turbid media. The widely used dipole diffusion model [JMLH01] applies the diffusion-theory formula derived for the planar surface to objects of arbitrary shapes. This paper presents first results of our investigation of how surface curvature affects the diffuse reflectance f...