1,720,980 research outputs found
Pianificazione aziendale in agricoltura: la teoria dei rough sets applicata all’ottimizzazione multi-obiettivi
No full textIl presente lavoro, dopo uno stato dell’arte che analizza l’evoluzione dei metodi per la pianificazione e l’ottimizzazione aziendale in agricoltura, sia a livello nazionale che internazionale, propone l’applicazione della teoria dei rough sets ai processi di ottimizzazione multi-obiettivi, utilizzando quale elemento esplicativo della teoria un esempio semplificato di applicazione a una azienda agricola
Economic and environmental evaluation of transporting imported pellet: A case study
No full textThis work compares the different methods of transport used to import pellets, through a case study of pellets imported into Italy. The objective was to evaluate the economic and environmental sustainability of the different transport methods, the former via a cost analysis, and the latter via an LCA analysis. In particular, the method of transport by sea from Virginia (USA) was compared to overland transport from some European locations. Industrial pellet markets strictly depend on the import of wood pellets from outside the EU-27. The analysis of transport phase is therefore crucial, for inspecting the consequences of transporting such a commodity along considerable distances and allowing decision makers to make strategic decisions about trade planning, optimize international routes, and choose the most sustainable transport methods. The economic analysis showed that road transport cost ranged from 18 to 112 € t−1, while sea cost from 68 to 82 € t−1. Concerning the environmental evaluation, the impact categories most involved were Fossil Fuels, Respiratory Inorganics and Land Use, showing that the critical points in the transport phase are the oil consumption per km and the production of high quantities of SO2 and NOx. Basically, transport by sea appeared to be better, from the economic viewpoint, and for what concerns one of the major environmental impacts involved (fossil fuels) and primary energy consumption, compared to road transport from some of the European locations normally supplying the Italian market. On the contrary, road transport was preferred if transporting pellets from locations nearest to Italy
Production of insulating panel from pruning remains: An economic and environmental analysis
No full textValorization of key buildings of the rural traditional landscape in central Italy: the case of the “Casa Colonica”
No full textTraditional farmhouses are landscape resources of great value as elements of identity that can "narrate" different space-time modality of land management and social organization.
A meaningful objective is to merge the need of preservation of these historic buildings and the need to increase their energy efficiency. This paper is part of a broader research with this aim. The paper concerns the developing of a model showing the optimal solutions to insulate the roof of a typical vernacular building of central Italy called “Casa Colonica”. The model developed an energy simulation model integrated with a life-cycle costing approach and a life-cycle assessment approach. Furthermore, the first outputs of the model are combined using a multicriteria analysis aimed to rank the sustainability of the insulating materials. Ten insulating materials were tested and the resulting best materials are polyurethane, polystyrene foam, rock wool, glass wool, hemp and kenaf fibres thanks to their good energy and thermal performances and a good LCA performance. The worst materials is mineralized wood. In fact, while presenting a good LCC performance, this material has high costs in terms of human health, ecosystem quality, resources consumed, and a low efficiency as insulating materials, which is reflected in a high number of hour of discomfort and low CO2 avoided
Soil instability and agricultural management: an application using the Dominance-based Rough Set Approach (DRSA)
No full textLand defense from hydrogeological instability is a very important topic, at both national
and international level. Every year these phenomena cause huge environmental, social and
economic damages. Human activities, especially in relation to land-use change and
intensification of agriculture, represent one of the main factors affecting the stability of the
soil. For a proper management of territory in terms of prevention and control of
hydrogeological instability, to use tools that combine support to public decision-makers
with spatial analysis is essential. The purpose of this paper is to illustrate the utility of
integrating Geographic Information Systems (GIS) with multicriteria analysis (MCDA) in
relation to a case study of the basin Menotre, in Umbria; in particular we propose the use of
the Dominance-based Rough Set Approach, developed in GRASS GIS 6
Rete Natura 2000 e servizi ecosistemici
No full textLe stime dei servizi ecosistemici (SE) attraverso il metodo della choice experiment ha consentito di valutare la disponibilità a pagare complessiva della popolazione umbra per due livelli di protezione, per ciascuna macrocategoria di habitat. La valutazione economica dei SE erogati dalla rete Natura 2000 umbra oltre as essere di supporto nell'allocazione delle risorse tra programmi di conservazione della biodiversità e altre iniziative, a contribuire nell'eventuale disegno di incentivi economici e accordi istituzionali, ad essere utile a giustificare i budget destinati alla conservazione della biodiversità, può contribuire a designare le strategie di gestionedella rete che verrebbero maggiormente accolte dalle popolazioni local
An evaluation of climate change effects on agricultural systems: the case of Trasimeno Lake
No full text- …
