1,721,328 research outputs found
Little pieces of mystery from the Silurian of the Dingle Peninsula, Ireland
Full text linkThree-dimensionally preserved fragments of the enigmatic organism Sandvikina, previously reported from the Silurian of Ireland, Scotland and Scandinavia, were recovered from the original Irish material that had revealed the problematic in thin sections. The new specimens derive from conodont residue and document silicified sectors of the distal part of the skeleton. A different pattern characterizes the outer and inner walls, with an external net-like reticulated and an internal continuous and apparently imperforate framework, getting therefore a filter-like feeding system function highly improbable
Conservare per sopravvivere: l’eredità di Mauro Civita (1933-2003) (paragrafo "Palinsesti architettonici. Il cantiere di restauro come luogo di comprensione della fabbrica e banco di prova per il progetto", pp. 22-31)
No full text"Preserving to survive" is the title of the text published by Mauro Civita in Granada, in 1984, as a collection of his Conversations in Baeza: lessons held in September of the previous year at the Universidad Internacional "Antonio Machado" of Baeza, which are placed in the broad framework of international relations that the Apulian professor and architect was establishing in those years, both in the fields of teaching and scientific research. The conversations are actually communications on the restoration of factories and historic centers, especially in Puglia, which provide Civita with the opportunity to collect in the title a work program established by him between the "G. D'Annunzio" University of Chieti and Pescara , where he taught for eighteen years starting in 1977, and UNAM, the National Autonomous University of Mexico City, which gave him the opportunity to successfully deal with a culture that was distant but only geographically, assumed as a counterpoint and food of an experience that to this day the Abruzzo University preserves among its most precious legacies, and which is the support of the same collection of essays in this volume. Undoubtedly Mauro Civita was an important witness of the history of restoration in Italy and in the world, also by virtue of his bond with Roberto Pane (1897-1987) and a relationship of continuity with respect to them that goes from the end of the seventies until the death of the Neapolitan master."Conservare per sopravvivere" è il titolo del testo pubblicato da Mauro Civita a Granada, nel 1984, a raccolta delle sue Conversazioni in Baeza: lezioni tenute nel settembre dell'anno prima alla Universidad Internacional "Antonio Machado" di Baeza, che si collocano nell'ampio quadro dei rapporti internazionali che il professore e architetto pugliese andava stabilendo in quegli anni, sia nell'ambito della didattica che della ricerca scientifica. Le conversazioni sono in realtà comunicazioni sui restauri di fabbriche e centri storici, soprattutto pugliesi, che forniscono a Civita l'opportunità di raccogliere nel titolo un programma di lavoro da lui stabilito tra l'Università "G. D'Annunzio" di Chieti e Pescara, dove insegna per diciotto anni a partire dal 1977, e la UNAM, L'Università Nazionale autonoma di Città del Messico, che gli dà l'occasione di confrontarsi, con successo, con una cultura lontana ma solo geograficamente, assunta a contrappunto e alimento di un'esperienza che a tutt'oggi l'Ateneo abruzzese conserva tra le sue più preziose eredità, e che è il sostegno della stessa raccolta di saggi del presente volume. Senz'altro Mauro Civita è stato un testimone importante della storia del restauro in Italia e nl mondo, anche in virtù del suo legame con Roberto Pane (1897-1987) e di un rapporto di continuità rispetto a questi che va dalla fine degli anni Settanta fino alla morte del maestro napoletano
Terlipressin as rescue treatment of refractory shock in a neonate
No full textPatients with septic shock may develop refractory hypotension despite maximal inotropic support with impairment of clinical outcome. Terlipressin, a long-acting vasopressin analogue, is reported to be effective as rescue treatment of refractory septic shock in adult and paediatric patients, while clinical experience in neonates is definitely scarce. We report a neonate with systemic inflammatory response syndrome after surgery for abdominal neuroblastoma who received terlipressin as rescue treatment after failure of volume load and catecholamines. Terlipressin promptly reversed hypotension and improved tissue perfusion without adverse effects. Conclusion: Terlipressin appears an effective rescue treatment in patients with refractory vasodilatory septic shock. Further studies are required to assess its efficacy and safety in neonatal population. © 2008 The Author(s)
Electrophysiological correlates of unconscious processes of race
Full text linkThe study aimed to examine the neural mechanisms underlying implicit other-race face processing by the use of the masked and unmasked priming manipulation. Two types of prime-target pairs were presented while recording Event-related potentials (ERPs): Same face pairs (prime-target were identical faces), and Different face pairs (prime-target were different faces). Prime-target pairs were half Asian (other-race) and half Caucasian (own-race) faces. The face stimuli on each pair were of the same gender and race. Participants (all Caucasians) had to decide whether the target was a male or a female face (gender task). The prime face could be unmasked or masked. On the behavioral side, our findings showed a race effect, that is slower reaction times (RTs) for other-race than own-race face stimuli, regardless of masking. On the ERPs side, our data showed a race effect across all components analyzed (P100, N100, N200, P300), under both the unmasked and masked manipulations. Besides, we found, in the unmasked condition, a priming effect as a function of race on the N100, N200, and P300 components; but, interestingly, in the masked condition, only on the P300. Overall, our findings provide evidence that race information is available very early in the brain and can strongly activate and influence people's behaviors even without conscious awareness
Electrophysiological correlates of unconscious processes of race
Full text linkThe study aimed to examine the neural mechanisms underlying implicit other-race face processing by the use of the masked and unmasked priming manipulation. Two types of prime-target pairs were presented while recording Event-related potentials (ERPs): Same face pairs (prime-target were identical faces), and Different face pairs (prime-target were different faces). Prime-target pairs were half Asian (other-race) and half Caucasian (own-race) faces. The face stimuli on each pair were of the same gender and race. Participants (all Caucasians) had to decide whether the target was a male or a female face (gender task). The prime face could be unmasked or masked. On the behavioral side, our findings showed a race effect, that is slower reaction times (RTs) for other-race than own-race face stimuli, regardless of masking. On the ERPs side, our data showed a race effect across all components analyzed (P100, N100, N200, P300), under both the unmasked and masked manipulations. Besides, we found, in the unmasked condition, a priming effect as a function of race on the N100, N200, and P300 components; but, interestingly, in the masked condition, only on the P300. Overall, our findings provide evidence that race information is available very early in the brain and can strongly activate and influence people’s behaviors even without conscious awareness
A better loss for visual-textual grounding
Full text linkGiven a textual phrase and an image, the visual grounding problem is the task of locating the content of the image referenced by the sentence. It is a challenging task that has several real-world applications in human-computer interaction, image-text reference resolution, and video-text reference resolution. In the last years, several works have addressed this problem by proposing more and more large and complex models that try to capture visual-textual dependencies better than before. These models are typically constituted by two main components that focus on how to learn useful multi-modal features for grounding and how to improve the predicted bounding box of the visual mention, respectively. Finding the right learning balance between these two sub-tasks is not easy, and the current models are not necessarily optimal with respect to this issue. In this work, we propose a loss function based on bounding boxes classes probabilities that: (i) improves the bounding boxes selection; (ii) improves the bounding boxes coordinates prediction. Our model, although using a simple multi-modal feature fusion component, is able to achieve a higher accuracy than state-of-the-art models on two widely adopted datasets, reaching a better learning balance between the two sub-tasks mentioned above
A better loss for visual-textual grounding
No full textGiven a textual phrase and an image, the visual grounding problem is the task of locating the content of the image referenced by the sentence. It is a challenging task that has several real-world applications in human-computer interaction, image-text reference resolution, and video-text reference resolution. In the last years, several works have addressed this problem by proposing more and more large and complex models that try to capture visual-textual dependencies better than before. These models are typically constituted by two main components that focus on how to learn useful multi-modal features for grounding and how to improve the predicted bounding box of the visual mention, respectively. Finding the right learning balance between these two sub-tasks is not easy, and the current models are not necessarily optimal with respect to this issue. In this work, we propose a loss function based on bounding boxes classes probabilities that: (i) improves the bounding boxes selection; (ii) improves the bounding boxes coordinates prediction. Our model, although using a simple multi-modal feature fusion component, is able to achieve a higher accuracy than state-of-the-art models on two widely adopted datasets, reaching a better learning balance between the two sub-tasks mentioned above
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