Search results for "temi"
showing 10 items of 3194 documents
Energy Management of a Hybrid Photovoltaic-Wind System with Battery Storage: A Case Report
2019
This work presents a case report related to the management and the monitoring of a hybrid photovoltaic-wind system with battery energy storage, installed at the administrative offices building of the municipality of Valderice (Italy) within the framework of the Italy-Tunisia ENPI cooperation project Le Développement Durable Dans la Production Energétique Dans le Territoire (DE.DU.ENER.T.). The paper describes the hybrid system and briefly reports the monitoring data for a whole year, comparing the real production with the expected one and evaluating some performance indexes of the system. The performance indexes are very simple and have been defined only with the purpose of sh…
An efficient proposal for the application of simulated annealing algorithms
2014
Complex nonlinear optimization problems require specific resolution techniques. These problems are often characterized by a solution space that presents many local optima. In these cases, local search algorithms, as the classical descent neighborhood search method, have a heavy drawback: the optimization algorithm generally converges towards a local minimum. To avoid getting trapped in a local minimum, the optimization algorithm must allow to accept worse solutions than the current one. Several kinds of algorithms have been ideated for this purpose and they differ for the acceptance criteria of a pejorative solution. Among such algorithms it is possible to remember the Taboo Search (TS) and…
Blogging as a research and educational tool: a three years experience
2008
Abstract Blogging can be also used to share knowledge in research and education. We have been using many blogs with the following purposes. One goal has been to raise awareness about research methods in the information technology field by supporting information exchange, collaboration, and cooperation between researchers. We have been using a common blog for 3 years to share inter- and intra disciplinary knowledge among us. We have also collected stories and interviewed colleagues and friends. An other goal is the use of blogs during our teaching experience as an instrument to support the exchange of knowledge with students. A comparison of the use of blogging is presented with positive and…
Stress and Coping Theories
2001
This article first presents two theories representing distinct approaches to the field of stress research: Selye's theory of ‘systemic stress’ based in physiology and psychobiology, and the ‘psychological stress’ model developed by Lazarus. In the second part, the concept of coping is described. Coping theories may be classified according to two independent parameters: trait-oriented versus state-oriented, and microanalytic versus macroanalytic approaches. The multitude of theoretical conceptions is based on the macroanalytic, trait-oriented approach. Examples of this approach that are presented in this article are ‘repression–sensitization,’ ‘monitoring-blunting,’ and the ‘model of coping …
Defining Kawasaki disease and pediatric inflammatory multisystem syndrome-temporally associated to SARS-CoV-2 infection during SARS-CoV-2 epidemic in…
2021
Abstract Background There is mounting evidence on the existence of a Pediatric Inflammatory Multisystem Syndrome-temporally associated to SARS-CoV-2 infection (PIMS-TS), sharing similarities with Kawasaki Disease (KD). The main outcome of the study were to better characterize the clinical features and the treatment response of PIMS-TS and to explore its relationship with KD determining whether KD and PIMS are two distinct entities. Methods The Rheumatology Study Group of the Italian Pediatric Society launched a survey to enroll patients diagnosed with KD (Kawasaki Disease Group – KDG) or KD-like (Kawacovid Group - KCG) disease between February 1st 2020, and May 31st 2020. Demographic, clini…
Di madre in figlio: fuoco, punizione e riti nella Pitica III di Pindaro
2021
Argomento dell’articolo sono i miti di Coronide e del figlio Asclepio nella Pitica 3 di Pindaro, in cui l’immagine del fuoco assume particolare rilievo in relazione ad entrambi. Asclepio è sottratto dal padre, Apollo, al corpo della madre che brucia sulla pira funeraria, e colpito dal fulmine di Zeus dopo aver cercato di riportare in vita un morto: il ciclo della sua esistenza – precedente alla divinizzazione – sembra pertanto replicare quello di Coronide, che si unisce ad un mortale mentre porta in grembo il figlio di Apollo, ed infrange la legge umana che prescrive i riti nuziali. Apollo causa quindi la sua morte attraverso l’intervento della sorella Artemide, che è detta θύοισα (‘furente…
A constrained genetic algorithm to optimize a maintenance global service
2014
It is herein developed an approach to optimize the maintenance services policy related to a Global Service Contract. In particular, the latter requires the performing of corrective maintenance and replacements of the failed components on a set of equal vehicles of a logistic Company. The tackled problem concerns the determination of an effective opportunistic maintenance policyon the basis of which when a fault occurs, it is replaced the failed component and, depending on the age of the others components, also replacements of others suitable components are performed, even if they are not yet broken, thus saving a substantial amount of system downtime. The problem is mathematically formulate…
Il paradigma mafioso dentro il modello della criminalità organizzata
2021
Interrogarsi sul metodo mafioso significa fare i conti con le differenti definizioni che della mafia sono state fornite, in un’ottica che non può che essere comparativa e diacronica. Non si possono, infatti, ignorare né le differenti declinazioni del modello organizzativo criminale nei diversi contesti territoriali, né la sua evoluzione nel tempo, né le modifiche intervenute con l’ampliarsi dello scenario internazionale e con la nascita delle cosiddette “nuove mafie”. Occorre, quindi, verificare gli elementi di mutazione riscontrati nelle maggiori organizzazioni criminali mafiose che operano in Italia; da una parte, spingendo l’attenzione verso gli scenari internazionali e, dall’altra, rile…
Waiting for a new leader: Eras and transitions in Cosa Nostra
2019
Partendo dal controverso dibattito che negli ultimi anni ha visto in Italia – soprattutto i mezzi di comunicazione di massa e le agenzie investigative – disputare sullo “stato di salute” delle organizzazioni criminali mafiose, quasi a volerne stilare una discutibile classifica di offensività e di pericolosità, il capitolo si interroga sull’attuale e delicata fase attraversata da Cosa Nostra, facendo ricorso a una prospettiva analitica multiproblematica e multidisciplinare (rielaborando il cosiddetto paradigma della complessità proposto da Umberto Santino alla luce dei più recenti studi e delle nuove prospettive analitiche emerse) e dando conto delle numerose ricerche (oggi spesso orientate …
Blockchain for power systems:Current trends and future applications
2020
Abstract Today, the blockchain is synonymous of technological innovation, being recognized among the 10 top strategy technologies in 2018 by the consulting company Gartner, it is more and more adopted in different sectors. However, the initial enthusiasm around this technology is going beyond the peak of inflated expectations, towards more stable applications in money transactions, cryptocurrencies and Digital Commodity Exchanges. Essentially, misguided efforts, the overuse of blockchain, and the Bitcoin's price drop have been the main reasons for this decay in expectations. Nevertheless, the exploitation of the blockchain technology in the power systems area appears largely underexplored, …