Search results for " sistemi"

Robust Selective Stereo SLAM without Loop Closure and Bundle Adjustment

2013

This paper presents a novel stereo SLAM framework, where a robust loop chain matching scheme for tracking keypoints is combined with an effective frame selection strategy. The proposed approach, referred to as selective SLAM (SSLAM), relies on the observation that the error in the pose estimation propagates from the uncertainty of the three-dimensional points. This is higher for distant points, corresponding to matches with low temporal flow disparity in the images. Comparative results based on the reference KITTI evaluation framework show that SSLAM is effective and can be implemented efficiently, as it does not require any loop closure or bundle adjustment.

Introduzione

2012

I Curatori introducono il volume dal titolo: "Federalismo, riforme della contabilità e dei sistemi di controllo. L'impatto sugli equilibri di bilancio e sull'efficacia dell'operato degli enti della amministrazione pubblica"

Education in a crisis. Italy within southern Europe: Trends and the way forward

2016

El artículo analiza la reacción peculiar del sistema educativo italiano a la reciente crisis, en comparación con países dotados de un «modelo de bienestar Mediterráneo», como Grecia, Portugal y España. Analizando los principales indicadores estadísticos nacionales de los sistemas educativos –acceso a la educación, éxito escolar, equidad e inclusión de alumnos inmigrantes– se ha profundizado en las dificultades, pero también en la resiliencia del sistema italiano de educación. El análisis permite concluir que las prioridades en términos de reforma son: completar el proceso de autonomía escolar, completar el plan de digitalización, dotando todas las escuelas de TICs actualizadas, cambiar la j…

A multi-objective fleet routing optimization for passenger shipping among islands

2009

In the last few years the statistical analysis on maritime freight and passenger transport highlights a positive trend of demand and for the next future, given the stressing congestion characterizing the road transport, a further increase both on the deep-sea-shipping and the short-sea-shipping is predicted. Given that, the navigation companies are called to improve their own services to assure a high quality and efficient customers transport, deriving at the same time their own benefits by minimizing the operating costs. Hence, an efficient and careful routes planning activity plays a meaningful role on navigation company productivity and income. Furthermore, the fleet deployment also cons…

Protection of Trees against Lightning Strikes as a Measure to Prevent Fires and Loss of Human Life

2021

Lighting strikes have been the catalyst of massive uncontrolled fires in areas of combustible vegetation. In some regions, lightning strikes may be a relatively unusual occurrence (e.g., California), but instead they seem to have become a major contributor to the propagation of wildfires, as a byproduct of climate change. Given such unusual weather, wildfires originating from lightning are an increasing threat. In this paper, the authors discuss the withstand capability of trees against lightning and introduce a proactive approach to prevent wildfires by the deployment of tree lighting protection systems (TLPS) to protect forested areas, where deemed necessary by the tree risk assessment.

Formatura della lamiera: il processo incrementale

2007

Mechanical and metallurgical properties of titanium alloy friction stir welded butt joints

2011

Local mechanical and morphological characterization of FSW butt joints

2006

In this paper the results of an experimental investigation into the local mechanical and morphological characterization of AA6082-T6 friction stir-welded (FSW) butt joints are illustrated. The softening effects of the welding process are highlighted through the use of micro-indentation tests on the top surface of the specimens. The effect of post-welding heat treatments was investigated, also

A fully automatic method for biological target volume segmentation of brain metastases

2016

Leksell Gamma Knife is a mini-invasive technique to obtain a complete destruction of cerebral lesions delivering a single high dose radiation beam. Positron Emission Tomography (PET) imaging is increasingly utilized for radiation treatment planning. Nevertheless, lesion volume delineation in PET datasets is challenging because of the low spatial resolution and high noise level of PET images. Nowadays, the biological target volume (BTV) is manually contoured on PET studies. This procedure is time expensive and operator-dependent. In this article, a fully automatic algorithm for the BTV delineation based on random walks (RW) on graphs is proposed. The results are compared with the outcomes of…

A Simulation Analysis for Assessing the Reliability of AC/DC Hybrid Microgrids - Part II: Port Area and Residential Area

2021

This paper reports the second part of a simulation study with the aim of evaluating the ability of two portions of a hybrid AC/DC MV/LV network in maintaining their operation in off-grid mode during the loss of the main AC grid due to a failure. In particular, this paper follows a dual purpose: first, it analysis two microgrids in a residential area and a port zone capability of operating in islanded mode, applying a probabilistic approach, while there is different energy use cases, and second is to evaluate some reliability indicators.