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According to the results of studies about broadcasting media in Brazil, the history of the radio is divided in three phases. The first embraces the period between 1922 and 1935, that corresponds to the experimental transmission stage. The second period (1935-1955) is characterized by the consolidation of the radio as a media. The last one, the period between 1955 and 1976, reflects the lost of media space due to the television. The present paper has the main proposal to describe the development of the radio as a media in Brazil and its role as advertising in every period. This paper also explains the use of radio advertising after the 70's. [ABSTRACT FROM AUTHOR]

The management of the information via databases is one of the big innovations since the arrival of the computer science and telecommunications to the journalism. In this paper, we present the results of a project which studies ways of managing information and memory in four representative cases of media in Spain and Brazil. This research uses content analysis, observation and interviews as methodological tools and shows the importance of a correct management and recovery of the data at every stage of the journalistic process: documentation, production, recovery, circulation and consumption. [ABSTRACT FROM AUTHOR]

Media criticism is an essential activity for any democracy. Named as the fourth power, media generally are against criticisms made to their practices and products and almost never make any self-criticisms. Facing this fact the present paper arguments in favour of media criticism in order to improve their practice, and thus the reason why the manuscript ends showing a Brazilian experience on media observatories. [ABSTRACT FROM AUTHOR]