Search results for "district"

A distributed agro-hydrological model for irrigation water demand assessment

2008

Abstract The actual irrigation water demand in a district in Sicily (Italy) was assessed by the spatially distributed agro-hydrological model SIMODIS (SImulation and Management of On-Demand Irrigation Systems) . For each element with homogeneous crop and soil conditions, in which the considered area can be divided, the model numerically solves the one-dimensional water flow equation with vegetation parameters derived from Earth Observation data. In SIMODIS, the irrigation scheduling is set by means of two parameters: the threshold value of soil water pressure head in the root zone, h m , and the fraction of soil water deficit to be re-filled, Δ . This study investigated the possibility of i…

Modelling of a prosumer’s substation in a district heating network: validation and dynamic analysis

Thermal grids will play a key role in the development of local energy communities and the achievement of 100% renewable societies. However, challenges are related to the capability of dealing with the increasing number of producers which could supply heat to thermal grids. Indeed, as in the case of the electricity grid, heat could be available for some hours in a day from RES plants installed at user level and distributed in the network (also referred to as “prosumers”). To achieve more reliable results when performing energy analyses of these innovative applications, there is a need to rely on accurate models of each component. For instance, substations are of paramount importance in the i…

Variables that Modulate Home Care Effectiveness in Patients with Chronic Cardiovascular Disease

2019

Introduction: The growing population of patients with chronic cardiovascular disease has many complex biomedical and psychosocial needs and requires an integrated teamwork approach. There is a need to develop a model for assessing the effectiveness of home care in patients with chronic cardiovascular disease, which would take the needs of informal caregivers into account.The purpose of the study was to determine the variables affecting the level of effectiveness of home care, defined as the co-occurrence of high: quality of life (QoL), health behaviours and met needs.Subjects and method: The study involved 193 patients under the care of district nurses and 161 informal caregivers. The study…

Distritos industriales y renta económica: el efecto distrito – renta

2019

En el presente trabajo se expone una primera aproximación al efecto distrito desde la variable de la renta económica, lo que se ha denominado efecto distrito – renta. Esta aproximación al fenómeno distritural se realiza desde la perspectiva del desarrollo local neomarshalliano para enfatizar la centralidad del distrito industrial como fuente de interpretaciones propias sobre el cambio económico y sujeto activo del mismo. A nivel empírico se realiza una aproximación a la contrastación de la existencia o no de efecto distrito – renta en los distritos industriales españoles para el año 2013; estos datos son analizados a través de la comparativa de la renta total, per cápita y por ocupado expre…

Evolution of innovation policy in Emilia-Romagna and Valencia: Similar reality, similar results?

2013

Ingenio Working Paper Series.

The quality of life of residents of a satellite degraded city district as part of urban development policy

2017

The purpose of this article is to assess the quality of life of the residents of a degraded satellite area of a city. It is considered in the context of urban development policy – as the result of decisions and as a challenge for long-term development. The research was based on a case study, which is the district of Opole referred to as Metalchem. It is characterized by an isolated location in the city structure as well as economic transformations. The study was based primarily on an analysis of source materials and results of a survey. The results show that the assessment of the quality of life is inconsistent. The living conditions are good, but satisfactory fulfilment of social needs is …

Paths of local development: Two technological districts face-to-face

2009

In this paper we compare the two hi-tech districts of Catania and Genoa, which are within the same national context and economic sector, with the aim of explaining their different choices (the promotion of external investments, in the first case, and fostering of the development of small businesses, in the second case) in the light of the local economic structure and the role played by political, economic, and educational institutions. Local actors have differently influenced the development of a professional community through the interpersonal networks of entrepreneurs and the performance obtained by local small businesses. While Catania has experienced a higher and more rapid growth, deve…

Assessing the feasibility of cogeneration retrofit and district heating/cooling networks in small Italian islands

2017

Sustainability of energy supply strategies in small islands has been emerging as a severe issue, due to the large margins for improvement and rationalization of the most frequently adopted solutions. In most of the European islands, large amounts of heat are wasted by the operation of engine-based power plants; conversely, heat is produced by boilers (supplied by liquid fuels) or by electric equipment for a number of different uses, like domestic hot water production or space heating in winter. In this paper a techno-economic analysis is proposed to assess the feasibility of CHP-retrofit of the existing power plants and the possible utilization of the recovered heat to supply, via a distric…

Smart district energy optimization of flexible energy units for the integration of local energy storage

2017

Several changes are involving electrical power systems, especially distribution networks. For this reason, the actors in charge of managing and operating reliably these grids are facing many technical issues regarding demand and supply balancing, Renewable Energy Sources and Electric Vehicles integration, peak load shaving, etc. In this context, many energy actions have been implemented for providing services to the power system managers by means of prosumers' demand and/or supply flexibility. This study reports the development of a centralized energy management solution for smart grids equipped with local storage devices, RES, consumers and other energy facilities in a district context. Th…

A novel hybrid polygeneration system supplying energy and desalinated water by renewable sources in Pantelleria Island

2017

Abstract In this paper a thermoeconomic analysis of a novel hybrid Renewable Polygeneration System connected to a district heating and cooling network is presented. The plant is powered simultaneously by solar and geothermal sources, producing electricity, desalinated water, heat and cooling energy. System layout includes Parabolic Through Collector (PTC) field, geothermal wells, Organic Rankine Cycle (ORC) unit and a Multi-Effect Desalination (MED) system. Cooling and thermal demands are calculated by suitable building dynamic simulation models, calibrated for Pantelleria Island. Electrical demand is obtained by measured data. A detailed control strategy has been implemented in order to pr…