1,721,070 research outputs found
Reflection symmetry to observe metallic targets at sea by a dual-polarimetric SAR
No full textA polarimetric model to observe metallic targets at sea in polarimetric Synthetic
Aperture Radar (SAR) data is proposed. The model gives an understanding of
the different symmetry properties that characterize sea surface with and
without metallic targets in terms of the correlation between like- and crosspolarized channels. Experiments undertaken over C-band Single Look Complex
(SLC) RADARSAT-2 SAR data confirm the soundness of the approach
Sea wave numerical simulations with COSMO-SkyMed© SAR data
No full textIn this paper, X-band COSMO-SkyMed© Synthetic Aperture Radar (SAR) data are first experimented as wind field forcing of coastal wind-wave oceanographic modeling for sea-wave numerical simulation. The SWAN wave numerical simulations run with Cosmo-SkyMed SAR wind data were performed with respect to some relevant wave storms in the Southern Thyrrenian Sea area during the winter season of 2010. The wind forcing is provided by X-band COSMO-SkyMed© SAR-based wind field estimations which are properly blended with both buoys wave data and ECMWF model winds to retrieve meaningful wave parameters (e.g. significant wave height, wave directions and periods) as physical descriptors of storm events. Experimental results accomplished with X-band COSMO-SkyMed© SAR-based wind field forcing are successfully compared with the ones gathered by using both buoys wave field data and ECMWF model winds, only. The results obtained with the use of blended COSMO-SkyMed©-ECMWF data are satisfactory in terms of sea storm reconstruction, so this source of data can be used also for coastal management purposes
The Exploring Mind. Natural Logic and Intelligence of the unconscious
No full textIn the last few years, the development of non-invasive research techniques that explore cerebral functions has not only increased our knowledge on the correlations between mental processes and cerebral structures, but it has fed our hopes for the possibility of facing the ancient and elusive question about the mind–brain relationship with a new way of thinking. Science has always faced the problem of consciousness. Consciousness differs radically from the ordinary objects researched by science: not only because of the complexity of the neural infrastructures which are at its base or because of the subtle connections between these infrastructures and phenomena such as decision making, morals and artistic creativity, but above all because of that which gives life to the qualitative dimension and to the subjectivity of its states. Humankind’s singular ability to make decisions has allowed human beings to face innumerable environmental challenges and complex evolutionary dynamics. Environmental pressures are not so urgent anymore, comparing to our ancestors. Nonetheless, the number of decisions that contemporary humans are called to make is very high. During the last three centuries, the change from normative to descriptive theories, from formal to natural logic, from substantive to limited rationality has allowed us to explain how many of the decisional strategies are coherent with the functioning of the cognitive economy of our species, even if they are limited and fallible
The Exploring Mind. Natural Logic and Intelligence of the unconscious.
No full textIn the last few years, the development of non-invasive research techniques that explore cerebral functions has not only increased our knowledge on the correlations between mental processes and cerebral structures, but it has fed our hopes for the possibility of facing the ancient and elusive question about the mind–brain relationship with a new way of thinking.
Science has always faced the problem of consciousness. Consciousness differs radically from the ordinary objects researched by science: not only because of the complexity of the neural infrastructures which are at its base or because of the subtle connections between these infrastructures and phenomena such as decision making, morals and artistic creativity, but above all because of that which gives life to the qualitative dimension and to the subjectivity of its states.
Humankind’s singular ability to make decisions has allowed human beings to face innumerable environmental challenges and complex evolutionary dynamics. Environmental pressures are not so urgent anymore, comparing to our ancestors. Nonetheless, the number of decisions that contemporary humans are called to make is very high. During the last three centuries, the change from normative to descriptive theories, from formal to natural logic, from substantive to limited rationality has allowed us to explain how many of the decisional strategies are coherent with the functioning of the cognitive economy of our species, even if they are limited and fallible
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