Privatization and competition versus public service

This article explores how to find an equilibrium between privatization and the public service ethos in telecommunications in the face of increasing internationalization. There is a danger of being blinded by a dogmatic belief in the efficacy of competition and privatization. The right solution may lie in a mix of monopoly in basic service provision and liberalization of other services. The rule of thumb must be to 'put the customer first'.

Les téléservices - mythe et réalité

Mr. Tréheux rappelle d'abord que les téléservices ne sont pas une nouveauté contrairement à ce que Von pourrait imaginer. Il rappelle les obstacles qui dans le passé se sont présentés lors du développement de tels services.Treheux Michel. Les téléservices - mythe et réalité. In: NETCOM : Réseaux, communication et territoires / Networks and Communication Studies, vol. 9 n°2, août 1995. Expériences et perspectives de la téléactivité. pp. 316-322

Communication odontologiste-radiologiste en Meurthe-en-Moselle

NANCY1-SCD Pharmacie-Odontologie (543952101) / SudocPARIS-BIUM (751062103) / SudocNANCY1-Bib. numérique (543959902) / SudocSudocFranceF

Study of the influence of microstructure on electric properties of plasma-sprayed aluminia coatings using the scanning electron microscope mirror effect (SEMME) method

International audienc

Influence of defect orientation on electrical insulating properties of plasma-sprayed alumina coatings

International audienceThe influence of the microstructure (pores and cracks) on electric properties of plasma-sprayed alumina coatings was investigated using the so-called Scanning Electron Microscope Mirror Effect (SEMME) technique. Coatings were sprayed with different alumina feedstock powders on various atmospheres using a CAPS (‘Controlled Atmosphere Plasma Spraying'). Microstructures with various amount of porosity and cracks orientation distributions were analysed. Both outer surfaces and cross-sections of alumina coatings have been analysed by SEMME technique using two complementary modes (measurement of absorbed current and mirror methods). Originally developed to study the behaviour of injected electrons and related phenomena, such as trapping ability, detrapping process and relaxation phenomena in bulk insulating materials, the SEMME technique was successfully applied, in this study, to porous coatings. It is proved that cracks orientation modifies both motion and trapping of charges and therefore the dielectric properties of plasma-sprayed alumina coatings