ICT as an Enabler for Innovation Adoption

In this paper we investigate how two online services (a portal and a digital library) may influence the adoption of an innovation. It is known from prior surveys that the installation services branch of the Dutch building industry has a relatively slow adoption rate for innovations. We examine if these two online services can influence the attitude towards the adoption of innovations. From the academic literature we have derived a list of factors that influence the attitude towards adoption by individuals. We limited this project to a number of factors that are commonly referred to as technological factors. Using an online digital library and a custom-built portal, we conducted a field experiment with a post-test only control group design for one particular innovative product (a gas-analysis device); the test was performed using a survey. Our main finding is that the portal has a significant and positive effect towards the adoption of the innovation by an individual. We did not find a significant impact for the use of the digital library. On the basis of this experiment, we propose that online services that offer a high degree of interaction amongst their users are more likely to induce an increase in the willingness of an individual to adopt an innovation.innovation;adoption;digital library;portal;field experiment.

Uitlaatgaskatalysatoren voor auto's

Hoewel de fiets als personen vervoermiddel om uiteenlopende redenen te prefereren is boven de bromfiets of de auto, kiezen (helaas) veel leerlingen voor gemotoriseerd vervoer. Zo gauw ze de 16 jaar gepasseerd zijn, schaffen zij zich een brommer aan en na hun achttiende verjaardag proberen zij zo snel mogelijk een rijbewijs te bemachtigen, ondanks de negatieve geluiden over autogebruik zoals filevorming, verkeersonveiligheid en milieuvervuiling. Wat het laatste betreft wordt in dit artikel ingegaan op de uitlaatgaskataIysator voor auto's met de bijbehorende milieutechnologische, chemische en fysische aspecten. Dit onderwerp is ons inziens interessant en relevant voor leerlingen in de vrije ruimte van Biologie/Natuurkunde/ Scheikunde in de tweede fase van het voortgezet onderwijs

Collective dynamics of liquid aluminum probed by Inelastic X-ray Scattering

An inelastic X-ray scattering experiment has been performed in liquid aluminum with the purpose of studying the collective excitations at wavevectors below the first sharp diffraction peak. The high instrumental resolution (up to 1.5 meV) allows an accurate investigation of the dynamical processes in this liquid metal on the basis of a generalized hydrodynamics framework. The outcoming results confirm the presence of a viscosity relaxation scenario ruled by a two timescale mechanism, as recently found in liquid lithium.Comment: 8 pages, 7 figure

Evidence of two viscous relaxation processes in the collective dynamics of liquid lithium

New inelastic X-ray scattering experiments have been performed on liquid lithium in a wide wavevector range. With respect to the previous measurements, the instrumental resolution, improved up to 1.5 meV, allows to accurately investigate the dynamical processes determining the observed shape of the the dynamic structure factor, $S(Q,\omega)$. A detailed analysis of the lineshapes shows the co-existence of relaxation processes with both a slow and a fast characteristic timescales, and therefore that pictures of the relaxation mechanisms based on a simple viscoelastic model must be abandoned.Comment: 5 pages, 4 .PS figure

Bound and free atoms diagnosed by the recoil-induced resonances: 1D optical lattice in a working MOT

We report on studies of simultaneous trapping of $^{85}$Rb atoms in a magneto-optical trap (MOT) and 1D optical lattice. Using Raman pump-probe spectroscopy we observe the coexistence of two atomic fractions: the first, which consists of free, unbound atoms trapped in a MOT and the second, localized in the micropotentials of the optical lattice. We show that recoil-induced resonances allow not only temperature determination of the atomic cloud but, together with vibrational resonances, can also be used for real-time, nondestructive studies of the lattice loading and of the dynamics of systems comprising unbound and bound atomic fractions.Comment: 6 pages, 7 figures, submitted to PR

Density fluctuations and single-particle dynamics in liquid lithium

The single-particle and collective dynamical properties of liquid lithium have been evaluated at several thermodynamic states near the triple point. This is performed within the framework of mode-coupling theory, using a self-consistent scheme which, starting from the known static structure of the liquid, allows the theoretical calculation of several dynamical properties. Special attention is devoted to several aspects of the single-particle dynamics, which are discussed as a function of the thermodynamic state. The results are compared with those of Molecular Dynamics simulations and other theoretical approaches.Comment: 31 pages (in preprint format), 14 figures. Submitted to Phys. Rev.