Search results for "Network"

Rede social: desvendando a teia de relações interpessoais da nutriz

2010

Made available in DSpace on 2021-07-14T10:24:56Z (GMT). No. of bitstreams: 0 Previous issue date: 2010. Added 1 bitstream(s) on 2021-07-14T11:29:38Z : No. of bitstreams: 1 S0103-73312010000100014.pdf: 716466 bytes, checksum: ff16f6f6874f651993d113afe7d46816 (MD5) Este é um estudo qualitativo que se refere à relação da rede social e a amamentação. Como fundamentação teórica, utilizou-se a Teoria da Rede Social de Sanicola, bem como a Teoria das Representações Sociais descrita por Moscovici e Minayo. Participaram do estudo mães, pais e avós, de crianças até dois anos, residentes no município de Coimbra-MG. A análise compreensiva da rede social da nutriz revelou que esta pode oferecer apoio/su…

A CUDA-based implementation of an improved SPH method on GPU

2021

We present a CUDA-based parallel implementation on GPU architecture of a modified version of the Smoothed Particle Hydrodynamics (SPH) method. This modified formulation exploits a strategy based on the Taylor series expansion, which simultaneously improves the approximation of a function and its derivatives with respect to the standard formulation. The improvement in accuracy comes at the cost of an additional computational effort. The computational demand becomes increasingly crucial as problem size increases but can be addressed by employing fast summations in a parallel computational scheme. The experimental analysis showed that our parallel implementation significantly reduces the runti…

Emulating the Effects of Radiation-Induced Soft-Errors for the Reliability Assessment of Neural Networks

2021

International audience; Convolutional Neural Networks (CNNs) are currently one of the most widely used predictive models in machine learning. Recent studies have demonstrated that hardware faults induced by radiation fields, including cosmic rays, may significantly impact the CNN inference leading to wrong predictions. Therefore, ensuring the reliability of CNNs is crucial, especially for safety-critical systems. In the literature, several works propose reliability assessments of CNNs mainly based on statistically injected faults. This work presents a software emulator capable of injecting real faults retrieved from radiation tests. Specifically, from the device characterisation of a DRAM m…

The importance of fracture-healing on the deformation of fluid-filled layered systems

2014

International audience; Understanding the fracturingehealingerefracturing cycle is a fundamental part of studying the deformation dynamics and the permeability evolution of rock systems. Previous studies, however, have not examined the influence of healing i.e. fracture-closure through vein formation and the mechanical properties of the " healed " fractures (veins) on the rock deformation. We present results from a two-dimensional coupled hydro-mechanical model which simulates large time and spatial scale dynamic fracturing and healing of a porous medium under the influence of gravity, tectonic stretching and elevated fluid pressures. Our results show that healing decreases the local porosi…

Reliability Analysis of Three Homogeneous Fault-tolerant Inverter Topologies

2016

Abstract—In this article, non-redundant fault-tolerant inverter topologies are addressed. A novel fault-tolerant control strategy which enhances performances during post-fault operation is proposed. Benefits from the proposed strategy over conventional fault-tolerant topologies are investigated in terms of system reliability. Cost, post-fault performances, and system reliability of the proposed solution are compared with both a conventional triac-based fault-tolerant inverter and a T-type inverter. The reliability analysis of each selected configuration is carried out by means of Markov chains. The analysis is validated through a comparison of reliability and sensitivity curves. As shown by…

A Curvature Based Method for Blind Mesh Visual Quality Assessment Using a General Regression Neural Network

2016

International audience; No-reference quality assessment is a challenging issue due to the non-existence of any information related to the reference and the unknown distortion type. The main goal is to design a computational method to objectively predict the human perceived quality of a distorted mesh and deal with the practical situation when the reference is not available. In this work, we design a no reference method that relies on the general regression neural network (GRNN). Our network is trained using the mean curvature which is an important perceptual feature representing the visual aspect of a 3D mesh. Relatively to the human subjective scores, the trained network successfully asses…

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.

Redes museales en clave feminista. El caso "Relecturas" = Museum Networks from a Feminist Perspective. The case of «Relecturas»

2020

El artículo se propone analizar como caso de estudio el proyecto «Relecturas. Itinerarios museales en clave de género», nacido en 2017 bajo la coordinación de la Universitat de València con el fin de conectar museos de la ciudad de València y de su área metropolitana a través de itinerarios que ofrezcan relecturas a sus colecciones en clave de género o feminista. Se abordan algunos antecedentes del proyecto, así como su contextualización en un momento aparentemente propicio para la paulatina entrada de las mujeres en los museos. Se exponen los diferentes objetivos y metodologías de trabajo del proyecto, así como los retos que debería afrontar en un futuro para conseguir una mayor consolidac…

Il ruolo della fiducia nelle relazioni interaziendali:il caso del network turistico di San Vito Lo Capo.

2011

Propagation of Bankruptcy Risk over Scale-Free Economic Networks.

2022

The propagation of bankruptcy-induced shocks across domestic and global economies is sometimes very dramatic; this phenomenon can be modelled as a dynamical process in economic networks. Economic networks are usually scale-free, and scale-free networks are known to be vulnerable with respect to targeted attacks, i.e., attacks directed towards the biggest nodes of the network. Here we address the following question: to what extent does the scale-free nature of economic networks and the vulnerability of the biggest nodes affect the propagation of economic shocks? We model the dynamics of bankruptcies as the propagation of financial contagion across the banking sector over a scale-free network…