The paper adapts a static model of television advertising into a dynamic scenario. In its original form, the model consists on a profit maximization problem of a television network working in a competitive environment. The network sells commercial time to advertisers and tries to minimize the effects of viewers’ aversion to ads. Viewers are assumed heterogeneous with regard to the preferences o...

The regulatory framework of the audiovisual sector in Spain can be defined as huge, disperse, and obsolete. The first part of this paper provides an overview of the major challenges of the Spanish audiovisual sector as a result of the convergence of platforms, services and operators. In the second part, we will present an example of self-regulation through the future Code of Best Professional P...

BACKGROUND Following the entrance of new technologies in health information era, this study aimed to assess changes in health information sources of Iranian people during past decade. METHODS Totally 3000 people were asked about their main sources of health information. They were selected as two community-based samples of 1500 people of more than 18-years-old in two different periods of time ...

A simple propagation model for the VHF and UHF bands is presented. The model is a computational form of the data provided by the FCC F(50,50) propagation curves, and it is aimed to be used by practicing engineers. It allows the estimation of median path loss, received power, or electrical field strength which usually is sufficient in many practical applications. The model is independent of freq...

3 ABSTRACT. We extend a p-adic spectral theorem of M. M. Vishik to a certain class of p-adic Banach algebras. This class includes inductive limits of finite-dimensional p-Banach algebras of the form B(X), where X is a p-adic Banach space of the form X ≃ Ω p (J), J being a finite nonempty set. In particular, we present a p-adic spectral theorem for p-adic UHF algebras and p-adic TUHF algebras (T...

Media studies research of the 1990s illustrated an incongruity between cultural diversity in the Australian community with the representation of that diversity on commercial television screens. Australian drama in particular received much criticism for its seemingly “Anglo” portrayal of Australian society. Most of this former research was based on program content analysis and critical approache...

Investigation of inertia-gravity waves in the upper troposphere/lower stratosphere over northern Germany observed with collocated VHF/UHF radars A. Serafimovich, P. Hoffmann, D. Peters, and V. Lehmann Institute of Atmospheric Physics, Kühlungsborn, Germany Meteorological Observatory, Lindenberg, Germany Received: 6 July 2004 – Accepted: 20 July 2004 – Published: 5 August 2004 Correspondence to:...