Search results for " Recovery"
showing 10 items of 561 documents
Managing service shutdowns: Cash refunds or vouchers?
2022
Service shutdowns—extended disruptions of operations—caused by exogenous events are on the rise. Such shutdowns pose major challenges for service providers, customers, and regulators. Providers prefer vouchers as a means of service recovery to limit bankruptcy risk, whereas customers demand cash refunds or vouchers that include a generous bonus. Regulators, on the other hand, insist that customers must be granted the right to be reimbursed in cash. This paper shows that a zero bonus is optimal under the voucher-only strategy, whereas the provider should always include a positive bonus with the voucher under the hybrid strategy that allows customers to choose between the cash refund and vouc…
Instabilities Effects in Thin Film Solar Cells: Reversible Ageing, Performance Recovery and Improvement by Electrical Stresses
Centri storici meridionali: verso quale futuro?
2020
Il contributo prende le mosse da una domanda di fondo, e cioè se i centri storici delle grandi e medie città meridionali, interessati da processi di recupero e di riqualificazione, possano sfuggire a un destino settoriale basato prevalentemente sull’eccellenza del patrimonio, sul turismo e sulle attività culturali o possano continuare a svolgere il ruolo di strutture urbane vitali, dotate di un mix di attività ordinarie e di funzioni, prima fra tutte, quella residenziale. L’intervento sui centri storici richiede un’ottica multidisciplinare integrata, che dalla visione complessiva dei problemi faccia discendere strategie per la conservazione e la rivitalizzazione urbana. The contribution sta…
On interactive multiobjective optimization with NIMBUS® in chemical process design
2005
We study multiobjective optimization problems arising from chemical process simulation. The interactive multiobjective optimization method NIMBUS®, developed at the University of Jyvaskyla, is combined with the BALAS® process simulator, developed at the VTT Technical Research Center of Finland, in order to provide a new interactive tool for designing chemical processes. Continuous interaction between the method and the designer provides a new efficient approach to explore Pareto optimal solutions and helps the designer to learn about the behaviour of the process. As an example of how the new tool can be used, we report the results of applying it in a heat recovery system design problem rela…
Energy performance evaluation of a demo solar desiccant cooling system with heat recovery for the regeneration of the adsorption material
2012
Abstract Since July 2008, a Solar Desiccant Evaporative Cooling (DEC) system has been operating as a test plant at the solar laboratory of the Dipartimento di Energia (ex DREAM) of the University of Palermo. The system is composed of an air handling unit (AHU) designed for ventilation of the laboratory coupled with a radiant ceiling that provides most of the required sensible cooling/heating energy. Flat plate collectors deliver part of the regeneration heat of the desiccant wheel during the summertime and are used for space heating during the wintertime. The system was designed for high humidity loads because of the typical climate conditions at the site and the need to support a radiant c…
Energy and economic assessment of desiccant cooling systems coupled with single glazed air and hybrid PV/thermal solar collectors for applications in…
2009
Abstract This paper presents a detailed analysis of the energy and economic performance of desiccant cooling systems (DEC) equipped with both single glazed standard air and hybrid photovoltaic/thermal (PV/t) collectors for applications in hot and humid climates. The use of ‘solar cogeneration’ by means of PV/t hybrid collectors enables the simultaneous production of electricity and heat, which can be directly used by desiccant air handling units, thereby making it possible to achieve very energy savings. The present work shows the results of detailed simulations conducted for a set of desiccant cooling systems operating without any heat storage. System performance was investigated through h…
Gaming as a Key Approach for the Recovery Process of a Public Space: The Case Study of the Old Chemical Plant ‘Chimica Arenella’ in Palermo
2021
This poster describes the FORGE (FactOry of uRban GamEs) project, a proposal that our research group launched in partnership with the Municipality of Palermo (Italy) and other local stakeholders in 2019. FORGE will be hosted in what was previously a chemical plant (the former 'Chimica Arenella') and is an open factory designed to collect needs and to generate interventions for urban innovation. The four key terms we have used for the project are urban, game, factory and participation. In fact, FORGE employs a participatory methodological model based on the concept of game, aimed at supporting social and economic development through a platform for participatory co-design. FORGE plays also a …
CLOSING THE LOOP: STUDY OF INTEGRATED CYCLES WITH NATURAL AND ARTIFICIAL SOLUTIONS FOR THE PRODUCTION OF ENERGY, MINERALS AND FRESH WATER
Edilizia abusiva a Favara. Analisi dell’insediamento e sviluppo del territorio
2007
Il Piano Regolatore Generale, strumento di fondamentale importanza per lo sviluppo di un centro urbano e del suo territorio, è ancora per diverse città siciliane un obiettivo da raggiungere. I dati provenienti dall'Assessorato Regionale al Territorio e Ambiente (A.R.T.A.) indicano una Sicilia decisamente indietro nella progettazione urbanistica. Nell'isola soltanto il 40,3% dei comuni hanno un piano regolatore vigente. La mancata approvazione degli strumenti urbanistici ha influito negativamente sui processi di urbanizzazione, spesso frammentari e disorganici. Le città si sono sviluppate senza una forma, un modello riconoscibile, alimentando nei cittadini una politica che ha preferito l’edi…
Blocking NMDA-receptors in the pigeon's "prefrontal" caudal nidopallium impairs appetitive extinction learning in a sign-tracking paradigm
2015
Extinction learning provides the ability to flexibly adapt to new contingencies by learning to inhibit previously acquired associations in a context-dependent manner. The neural networks underlying extinction learning were mostly studied in rodents using fear extinction paradigms. To uncover invariant properties of the neural basis of extinction learning, we employ pigeons as a model system. Since the prefrontal cortex of mammals is a key structure for extinction learning, we assessed the role of N-methyl-D-aspartate receptors (NMDARs) in the nidopallium caudolaterale, the avian functional equivalent of mammalian prefrontal cortex. Since NMDARs in prefrontal cortex have been shown to be rel…