Search results for "NETWORKS"
showing 10 items of 3260 documents
Contributions and applications around low resource deep learning modeling
2023
El aprendizaje profundo representa la vanguardia del aprendizaje automático en multitud de aplicaciones. Muchas de estas tareas requieren una gran cantidad de recursos computacionales, lo que limita su adopción en dispositivos integrados. El objetivo principal de esta tesis es estudiar métodos y algoritmos que permiten abordar problemas utilizando aprendizaje profundo con bajos recursos computacionales. Este trabajo también tiene como objetivo presentar aplicaciones de aprendizaje profundo en la industria. La primera contribución es una nueva función de activación para redes de aprendizaje profundo: la función de módulo. Los experimentos muestran que la función de activación propuesta logra…
Adaptive range-based localization algorithm based on trilateration and reference node selection for outdoor wireless sensor networks
2022
Locating the nodes of outdoor wireless sensor networks (WSNs) using (tri)lateration with a low-cost ranging technique, such as the received signal strength indicator (RSSI), often results in inaccurate location estimates. This can mostly be explained by the combined effect of distance estimate errors and localization geometry, both of which are subject to the reference nodes used. To develop techniques for reducing localization error, the distance estimate errors and localization geometry must be analyzed and taken into account. To address these challenges, this paper aims to seek ways to improve the quality of range-based trilateration localization for WSN nodes in varying outdoor conditio…
Thèse : L'intégration de l'environnement au droit de l'électricité. Vers le renouvellement d'un service public.
2012
Equality, continuity and adaptability. Foundations of the right of the public utilities, Rolland laws apply vigorously to the public service for electricity, where activities did not change since the advent of the « electricity fairy ». It is always about producing, transporting, distributing and supplying electricity, respecting the general interest. Nevertheless, the legal framework applicable to these activities is under a dramatic transition, stemming from the will of the European Union to create a single market for electricity. These changes incrementally drive to a shift of the public utility, basically socially oriented, to more and more demanding and diversified economic objectives.…
Definition of Water Meter Substitution Plans based on a Composite Indicator
2014
This paper presents a water meter substitution plan based on a composite "Replacement indicator" which was defined and compared with common substitution strategies based on meter age and on run-to-fail approaches. The methodology was applied to one of the 17 sub-networks in which the Palermo city water distribution network (Italy) is divided. The analysis was carried out considering a substitution budget limitation and the results showed that the use of "Replacement indicator" outperform the classical substitution strategies based on meter age because it takes into account some other variables that may affect meter precision and wearing. (C) 2013 The Authors. Published by Elsevier Ltd.
Artificial intelligence centric scientific research on COVID-19 : an analysis based on scientometrics data
2023
AbstractWith the spread of the deadly coronavirus disease throughout the geographies of the globe, expertise from every field has been sought to fight the impact of the virus. The use of Artificial Intelligence (AI), especially, has been the center of attention due to its capability to produce trustworthy results in a reasonable time. As a result, AI centric based research on coronavirus (or COVID-19) has been receiving growing attention from different domains ranging from medicine, virology, and psychiatry etc. We present this comprehensive study that closely monitors the impact of the pandemic on global research activities related exclusively to AI. In this article, we produce highly info…
Optimal Resource Allocation in Multi-Hop Networks: Contention vs. Scheduling
2014
CSMA/CA (Carrier Sense Multiple Access/Collision Avoidance) is actually the most used method in ad-hoc networks for transmitting on a contending medium, even if it shows poor performance in presence of hidden nodes. To increase performance, we propose an algorithm that combines CSMA and TDMA (Time Division Multiple Access) approaches. The adopted solution consists of grouping contending nodes in non-interfering subsets and granting a different numbers of time slots to different groups, while using the CSMA to manage medium access among nodes belonging to the same subset. An optimization procedure to assign the time slots to each subset of nodes and to find an equilibrium between contention …
Online grocery shopping before and during the COVID-19 pandemic: A meta-analytical review.
2021
The COVID-19 pandemic has forced people to limit their physical interactions, which has led to explosive growth in online grocery shopping. However, there is no clear consensus in the retailing literature on whether consumers prefer to buy groceries online. The objective of this current study is to synthesize research about online grocery shopping published before and during the COVID-19 pandemic and to develop a conceptual framework about online grocery purchase intentions and their determinants, the mediation effects of consumers’ attitudes, the moderating effects of COVID-19, and control variables. The meta-analysis presents data derived from 50 independent samples with a sample size of …
Reti, nuovi settori, sostenibilità: prossime sfide per lo sviluppo regionale
2014
La crisi ha stimolato, in molti ambiti, la scoperta di nuovi paradigmi o la rivalutazione di schemi concettuali che stentavano ad affermarsi. Il volume vuole riflettere su come alcuni di questi nuovi paradigmi (in tema di reti, nuovi settori, sostenibilità) abbiano orientato l’indagine empirica territoriale e raccogliere ed evidenziare le sfide che essi presentano per l’analisi e le politiche regionali.
Retoriche social. Nuove politiche della vita quotidiana
2018
Viviamo immersi in fiumi di parole. La nostra vita quotidiana si è velocemente trasformata nel suo riflesso comunicativo, costituita com’è dalla necessità di dire, dichiarare, raccontare ogni suo anfratto, testualizzandolo sui social network. Questa ansia (ma sarebbe più corretto chiamarla ingiunzione) di essere connessi ha come conseguenza non secondaria quella di allargare lo spettro del politico. Ogni giorno, distribuendo i nostri like in giro per la rete, non facciamo altro che circostanziare, puntualizzare, dire e ridire la nostra identità in relazione a quella degli altri, affiliandola, più o meno consapevolmente, a collettivi eterogenei, che si formano e si riconoscono, funzionano su…
Measuring the morphology of road networks and built-up surfaces: a mesoscale fractal approach
2012
International audience