Results 81 to 90 of about 410,250 (299)

Medios públicos:¿modelo en crisis?

open access: yes, 2004
El autor reflexiona acerca de la discusión actual acerca de la pertinencia de seguir contando con medios del Poder Ejecutivo o hay que convertirlos en medios públicos o, como se les dio en llamar hace tiempo, de Estado.
VILLANUEVA Ernesto
core  

Multi‐Platform Deployments of Low‐Cost Devices for Cetacean Passive Acoustic Monitoring

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Recent advances in affordable, user‐friendly devices offer new opportunities to overcome cost constraints of underwater passive acoustic monitoring (PAM) and expand acoustic data collection. In this study, we deployed low‐cost acoustic recorders and underwater cameras across a range of platforms in the Western Mediterranean, including fishing gear ...
Greta Jankauskaite   +8 more
wiley   +1 more source

Auténticos medios de estado

open access: yes, 2006
ArtículoSe necesita revisar los medios públicos, sacarlos de la órbita del gobierno en turno para que dejen de ser instrumentos políticos, y posicionarlos como medios de Estado.
YUSTE José
core  

Mapping Scytonemin Pigment Content and Biocrust Functional Indicators Using High‐Resolution Multispectral Imagery

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
We demonstrate that high‐resolution multispectral imagery combined with machine learning can accurately predict key biocrust functional indicators, particularly the UV‐protective pigment scytonemin, across dryland ecosystems. Using fine‐scale imagery acquired in the Chihuahuan Desert and Colorado Plateau, we identified spectral bands strongly ...
Raúl Román   +8 more
wiley   +1 more source

Elecciones y medios de comunicación

open access: yesRevista Controversia, 2008
A propósito del libro Las elecciones de la prensa.
Rodolfo Andrés Hernández
doaj  

Modification of the Madeira River morphology following large hydropower projects detected by satellite data

open access: yesRiver, EarlyView.
Abstract Estimating suspended sediment concentration (SSC) in river channels is essential for understanding hydro‐sedimentological processes, managing water quality, and conserving aquatic ecosystems. This study evaluated different empirical equations to estimate SSC in the lower Madeira River and analyzed its hydro‐sedimentary dynamics based on MODIS ...
Matheus Silveira de Queiroz   +5 more
wiley   +1 more source

Nuevas hormas para los medios

open access: yes, 2005
ArtículoEl reto planteado en los más actualizados estudios en la materia reside en la indentificación, con el mayor realismo, de los problemas que entraña abordar: 1) la discusión y construcción de una nueva normatividad de medios; 2) la búsqueda de los ...
CARREÓ CARLÓN José
core  

Herbivore and mesocarnivore carcasses trigger divergent short‐term changes in soil properties

open access: yesJournal of Animal Ecology, EarlyView.
Scavengers reshape nutrient cycles in soils under carrion. Compared to herbivore carcasses, smaller but longer‐lasting carnivore remains boost nutrient levels and microbial activity in dry soils. Abstract Animal corpses act as pulses of organic matter (OM) and serve a key zoogeochemical role by providing localized nutrient inputs to soils and thereby ...
Adrián Colino‐Barea   +15 more
wiley   +1 more source

Empleado de la Dirección de Medios de Comunicación edita cinta

open access: yes, 1990
Esta imagen procede de la Dirección de Medios de Comunicación del INAH, Córdoba núm.

core   +1 more source

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