Jairo Ferreira 252 In this way, the concept of devices unfolds into other reflections that are triggered in his research on circulation (con- tact device; enunciation devices, semio-technical device, etc.), due to the place it occupies as a mediator between grammars of production and recognition, in which we include the relations with the scale, time and space of the medium under investiga- tion. It is not about the medium itself. Any and all medium – radio, television, etc. – can only be analyzed in the media sphere if it is mediating relations with the public space. The analogies between the two investigations allow us to infer the relationships between the object of research and ontological mutations when the means and processes under analysis are differentiated. An exhibition has a time and space of occurrence in which the materialities available (exhibition space, photos, texts, etc.) for access and reception are limited to a physical territory in person, although the signs available in the exhibition refer to territories deferred in time and space (im- ages and texts on forms and places of vacation in different times and spaces in France). In other words, the medium has a specific occurrence in a physical territory (country, city, neighborhood, etc.) and access is only possible if the user is willing to travel there. The investigation, from the perspective of circulation, is delimited by this time and space to access the deferred time and space materialized in the exhibition. The time and space of a television program is different. Its scale is defined by the range of the television program’s ac- cess signal, central to the configuration of its audience. Access, therefore, already refers to another physical territory of access, broader than face-to-face. In the case of the program, a deferred spatiality is offered for access to deferred times and spaces of the thematic scientific events according to the schedule. The scale of the research, therefore, changes, includ- ing methodologically. This variation of scale – time and space – is central to the ontological mutations of mediatization, which demand new epistemological and methodological con- message. On the contrary, it appears, in the experience, as a very specialized communication device, necessary for the professionals who use it and direct it to specific skills."
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