Search results for " efficiency analysis."

showing 3 items of 3 documents

Rainwater Reuse in Urban Areas: A Mathematical Model and a Long-Term Modelling Approach

2018

Natural water resources are becoming increasingly limited due to global-scale climate change and water availability issues have become so severe that they must be addressed. Given these issues, reuse of wastewater and rainwater provides a promising way to cope with water shortages. This paper describes an investigation into the efficiency of rainwater usage systems. A conceptual model was built to assess the behaviour of rainwater tanks and their effectiveness in coping with water shortages. The study is based on a long-term simulation (12 years) of different rainwater reuse tank schemes. The associated reductions in residential freshwater demand (water reuse efficiency) and wet-weather run…

Potable waterWastewaterSettore ICAR/03 - Ingegneria Sanitaria-AmbientaleNatural waterRainwater reuse Water saving measures Mathematical models Long-term efficiency analysisEnvironmental scienceClimate changeReuseSurface runoffWater resource managementWater consumptionRainwater harvesting
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Educational Efficiency in a Dea-Bootstrap Approach

2010

We use the PISA 2006 results to analyse the students' proficiencies in 24 European Countries with regard to two indexes that represent the educational resources available at home and the family background of students. Many factors affect the proficiencies and therefore, using a DEA-bootstrap method, we intend to measure the efficiency of the European educational systems as capability to ensure high students' competencies despite adverse conditions about the educational resources available in students' home and the family background.

educationdeajel:I2efficiencySettore SECS-S/03 - Statistica Economicajel:C1bootstrapPISA educational achievement efficiency analysis.
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Rainwater reuse in urban areas: a mathematical model and a longterm modelling approach

2018

Natural water resources are becoming increasingly limited due to global-scale climate change and water availability issues have become so severe that they must be addressed. Given these issues, reuse of wastewater and rainwater provides a promising way to cope with water shortages. This paper describes an investigation into the efficiency of rainwater usage systems. A conceptual model was built to assess the behaviour of rainwater tanks and their effectiveness in coping with water shortages. The study is based on a long-term simulation (12 years) of different rainwater reuse tank schemes. The associated reductions in residential freshwater demand (water reuse efficiency) and wetweather runo…

long-term efficiency analysisSettore ICAR/03 - Ingegneria Sanitaria-AmbientaleRainwater reusewater saving measuremathematical model
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