1,720,965 research outputs found
Beeps (Building Energy and Environment performance System): a programme for building energy certification in Italy
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La certificazione energetica degli edifici. Un metodo di calcolo per gli edifici residenziali - prima parte
No full textIl tema della qualità e della certificazione energetica degli edifici, sebbene introdotto in Italia fin dal 1990 con la Legge 10 e in ambito comunitario dal 1993 con la Direttiva n. 93/76/EEC, sta suscitando in questi ultimi tempi un rinnovato interesse, a causa delle problematiche relative alla riduzione dei gas-serra e della nuova crisi petrolifera che sta investendo i paesi occidentali. Il lavoro si propone di fornire una procedura semplificata per la classificazione energetica degli edifici, tramite un nuovo parametro di qualità energetica, il FECS (fabbisogno energetico convenzionale stagionale). Il FECS consente di calcolare in maniera speditiva il fabbisogno energetico convenzionale stagionale, in regime stazionario, di un edificio ed è espresso in kWh/m2 anno; in analogia con la legislazione vigente, è stato definito anche il valore limite di questo parametro (FEClim). La metodologia di calcolo proposta è stata validata su un set di edifici reali, ottenendo errori inferiori all’8% rispetto ai metodi di calcolo più complessi. E’ stato inoltre introdotto un ulteriore indice (ICM, indice di consumo medio), rappresentativo dei consumi specifici reali registrati nell’edificio negli ultimi anni. Infine si è elaborata una proposta di certificato energetico che riporta i valori di FECS, FEClim e ICM e visualizza in maniera immediata, tramite una scala cromatica, il giudizio sulla qualità energetica dell’edificio
Big Data Analysis for Optimising the Decision-Making Process in Sustainable Energy Action Plans: A Multi-Criteria Evaluation Approach Applied to Sicilian Regional Recovery and Resilience Plans
Full text linkKeeping the global temperature rise below 2 degrees Celsius, as foreseen by the Paris Agreement, requires a new global roadmap for the energy transition. For this reason, the European Commission decided to directly involve local municipalities in reaching these objectives through multilevel, bottom-up actions for sustainable energy. The Covenant of Mayors is a very concrete demonstration of this trend of development and adoption of sustainable energy action plans (SEAP), rethinking the way cities operate and bringing them closer to energy self-sufficiency, with measures favouring local economic development and improving citizens’ quality of life. The numerous RES/RUE actions included in SEAPs at the regional level have led both to the request for huge funding and to increased complexity for regional managers to identify the best projects to be financed. To manage the multitude of data (emissions, energy consumption, cost, etc.) present in the SEAPs at a regional level, a web-based platform called Lex-energetica was developed. In this context, this paper aims to present a participatory supportive framework for the decision-making process involved in financing the SEAPs’ actions, considering the selection of sustainable Renewable Energy Sources (RES) and Rational Use of Energy (RUE) technologies. This study proposes a methodology based on two macro-phases: the first phase consists of a ranking evaluation of categories of areas of intervention based on the analytic hierarchy process, while the second identifies nine criteria, according to the domains corresponding to the three pillars of sustainability, to compare the most appropriate RES/RUE actions
Co-combustion performance and kinetic study of solid digestate with gasification biochar
No full textThermogravimetric (TG) analysis was carried out to evaluate the interactions and kinetics of char from biomass gasification, solid digestate and their blends under combustion condition. The gasification char was blended with solid digestate in the range of 10-90 wt% to analyze the co-combustion performance. Based on the thermal degradation experiments which were performed at three heating rates 5, 10, and 15 degrees C/min, the OFW model-free method was used to determine the activation energy, based on which the pre-exponential factor, the enthalpy, the Gibbs free energy and the entropy were also calculated to label the combustion process directly. Blending gasification char with solid digestate tends to reduce the activation energy, but the overall analysis of combustion, kinetic and thermodynamic parameters reveals the complexity of the degradation process of all blends. Results showed that the blending proportion of 50% was regarded as the optimum blend in according to the limitations of activation energy, comprehensive performance index and Gibbs free-energy
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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