Search results for "MAZ"
showing 10 items of 3205 documents
Atti GIORNATE DI STUDIO DELL'INSEGNANTE DI MATEMATICA (GIMat).Le mani, la parola, la testa: capire, argomentare, dimostrare in matematica
2022
Nello spirito di sempre, gli atti del convegno, pubblicati prima del convegno stesso, vogliono offrire ai lettori, anche attraverso i 25 contributi scritti/presentati da insegnanti, insegnanti/ricercatori e ricercatori universitari intervenuti a GIMat 2022 e riportati di seguito, la possibilità di riflettere prima, durante e dopo le stesse GIMat su tante esperienze portate avanti sul territorio nazionale e internazionale, nell’ambito dell’Educazione matematica
A Multi-Scale Colour and Keypoint Density-Based Approach for Visual Saliency Detection
2020
In the first seconds of observation of an image, several visual attention processes are involved in the identification of the visual targets that pop-out from the scene to our eyes. Saliency is the quality that makes certain regions of an image stand out from the visual field and grab our attention. Saliency detection models, inspired by visual cortex mechanisms, employ both colour and luminance features. Furthermore, both locations of pixels and presence of objects influence the Visual Attention processes. In this paper, we propose a new saliency method based on the combination of the distribution of interest points in the image with multiscale analysis, a centre bias module and a machine …
On the use of Deep Reinforcement Learning for Visual Tracking: a Survey
2021
This paper aims at highlighting cutting-edge research results in the field of visual tracking by deep reinforcement learning. Deep reinforcement learning (DRL) is an emerging area combining recent progress in deep and reinforcement learning. It is showing interesting results in the computer vision field and, recently, it has been applied to the visual tracking problem yielding to the rapid development of novel tracking strategies. After providing an introduction to reinforcement learning, this paper compares recent visual tracking approaches based on deep reinforcement learning. Analysis of the state-of-the-art suggests that reinforcement learning allows modeling varying parts of the tracki…
The intentional stance as structure learning: a computational perspective on mindreading
2015
Recent theories of mindreading explain the recognition of action, intention, and belief of other agents in terms of generative architectures that model the causal relations between observables (e.g., observed movements) and their hidden causes (e.g., action goals and beliefs). Two kinds of probabilistic generative schemes have been proposed in cognitive science and robotics that link to a "theory theory" and "simulation theory" of mindreading, respectively. The former compares perceived actions to optimal plans derived from rationality principles and conceptual theories of others' minds. The latter reuses one's own internal (inverse and forward) models for action execution to perform a look…
LEVEL OF ACTIVATION AND GOAL-DIRECTED BEHAVIOUR: The effect of chlorpromazine on aggressive, achievement oriented, and affiliation oriented verbal re…
1963
The purpose was to investigate the effect of chlorpromazine on verbal response contents in sentence completion tests. 30 male subjects participated in two chlorpromazine and one placebo session. It was found that the amount of aggressive, achievement and affiliation oriented responses was significantly reduced as an effect of drug intake. The results are discussed on the basis of the theories of conflict motivation and of arousal.
Simplified Model to Predict Runoff Generation Time for Well-Drained and Vegetated Soils
2016
The study of generation process of subsurface stormflow, typical of well-drained and high permeable soils, can be theoretically carried out by applying the continuity and the motion equations with the appropriate boundary conditions. However, difficulties and uncertainness on determining soil hydraulic properties and soil physics heterogeneities let this way not always feasible. In a different way, processes dynamic can be derived by the local scale through a coarse graining procedure, allowing to preserve medium motion character, while hydraulic fluctuation of the motion are lost. Following an approach as this, in this paper a simplified model to predict the runoff generation time, the so-…
Mildronate improves cognition and reduces amyloid-β pathology in transgenic Alzheimer's disease mice
2013
Mildronate, a carnitine congener drug, previously has been shown to provide neuroprotection in an azidothymidine-induced mouse model of neurotoxicity and in a Parkinson's disease rat model. The aim of this study was to investigate the effects of mildronate treatment on cognition and pathology in Alzheimer's disease (AD) model mice (APP(SweDI)). Mildronate was administered i.p. daily at 50 or 100 mg/kg for 28 days. At the end of treatment, the animals were behaviorally and cognitively tested, and brains were assessed for AD-related pathology, inflammation, synaptic markers, and acetylcholinesterase (AChE). The data show that mildronate treatment significantly improved animal performance in w…
Over-expression of two different forms of the α-secretase ADAM10 affects learning and memory in mice
2006
Members of the ADAM family (adisintegrin and metalloprotease) are the main candidates for physiologically relevant alpha-secretases. The alpha-secretase cleaves in the non-amyloidogenic pathway the amyloid precursor protein within the region of the Abeta peptides preventing their aggregation in the brain. The increase of alpha-secretase activity in the brain provides a plausible strategy to prevent Abeta formation. Concerning this possibility two transgenic mouse lines (FVB/N) have been created: mice over-expressing the bovine form of the alpha-secretase (ADAM10) and mice over-expressing an inactive form of the alpha-secretase (ADAM10-E348A-HA; ADAM10-dn). For behavioral examination a F1 ge…
Proposal of a Genome Editing System for Genetic Resistance to Tomato Spotted Wilt Virus
2014
Viruses provoke considerable economical losses in agriculture. New molecular approaches to develop genetic resistance based on translational genomics and precision genetic modifications are highly expected. The type II Clustered, Regularly Interspaced Palindromic Repeats (CRISPR) system including Cas9 nuclease represent a promising and very powerful tool to specifically modulate the expression and activity of genes involved in biotic stress responses. In this study, we describe an approach to develop a platform system based on CRISPR system for genome editing technology in tomato. Tomato is an excellent plant for this approach considering the high-quality genome sequence, the rapid life cyc…
Las estructuras de tierra delimitadas por zanjas en la Amazonía Occidental
2016
Esta tesis doctoral aborda el estudio de los sitios arqueológicos de la Amazonía Sur Occidental: Las estructuras de tierra delimitadas por zanjas. El descubrimiento de estos yacimientos dio, y sigue dando, una nueva realidad en la arqueología brasileña y de la Amazonía Occidental. Actualmente fueron hallados centenares de yacimientos (más de ochocientos) en los suelo descampados de la región y estos yacimientos son caracterizados como estructuras arqueológicas construidas mediante zanjas continuas, formando estructuras que delimitan espacios de diferentes formatos geométricos presentando una gran variedad de tamaños, que fueron construidos por poblaciones que vivieran en esta región de la A…