Search results for "efficiency"
showing 10 items of 1430 documents
"Table 5" of "Search for heavy resonances decaying to a photon and a hadronically decaying $Z/W/H$ boson in $pp$ collisions at $\sqrt{s}=13$ $\mathrm…
2018
Efficiencies for qqbar->X(J=1)->Hgamma signal events to pass the category selections as a function of the resonance mass.
"Table 3" of "Search for heavy resonances decaying to a photon and a hadronically decaying $Z/W/H$ boson in $pp$ collisions at $\sqrt{s}=13$ $\mathrm…
2018
Efficiencies for gg->X(J=2)->Zgamma signal events to pass the category selections as a function of the resonance mass.
"Table 2" of "Search for heavy resonances decaying to a photon and a hadronically decaying $Z/W/H$ boson in $pp$ collisions at $\sqrt{s}=13$ $\mathrm…
2018
Efficiencies for qqbar->X(J=2)->Zgamma signal events to pass the category selections as a function of the resonance mass.
Regional Matching Frictions and Aggregate Unemployment
2006
This study demonstrates that a stochastic frontier approach applied to regional level data offers a convenient and interesting method to examine how regional differences in matching efficiency and structural factors contribute to aggregate unemployment. The study reveals notable and temporally stable differences in matching efficiency across travel-to-work areas in Finland. If all areas were as efficient as the most efficient one, the number of hirings would increase by about 40 per cent. This would reduce the aggregate unemployment rate from the current 8.5 per cent level to 6.0 per cent. If all the areas shared the same structural characteristics as the most favourable area, the aggregate…
Efficiency analysis of small franchise enterprises through a DEA metafrontier model
2012
Spain has over 1000 franchises with more than 65,700 establishments in a wide range of economic sectors and a global turnover of over €19,000 million (2011). These figures confirm the importance of franchises in the Spanish economy. Consequently, an understanding of the economic and technical efficiency of franchises can help managers to optimise resources and take correct decisions. Traditional efficiency models require that the units being assessed operate with the same technology. As franchises reach many different sectors (travel agencies, catering companies, fashion firms, etc.) their relative efficiency is analysed using a non-concave metafrontier approach, which is based on data enve…
Comparing conventional and organic citrus grower efficiency in Spain
2014
This paper compares the organic and conventional citriculture systems in Spain from the perspective of their technical efficiency. The primary objective of the research is to compare the relative efficiency of these two systems in relation to a metafrontier that envelops both technologies. In addition, the article analyses how efficient each growing system is at using its own technology, that is, when farms’ efficiency is benchmarked in relation to the best practices in their group. Contrary to conventional practice, farms’ performance is analyzed in terms of specific growing tasks: soil and plant cover management, pruning, fertilization and phytosanitary treatments. The results obtained hi…
Energy performance of architectural heritage: characteristics of the historic buildings in Palermo
2015
The current researches on the energy and environmental improvement of historic architecture aim to develop strategies respectful of its aesthetic and material features. This requires a deep knowledge of the characters strictly connected to a local context. This paper focuses on the historic architecture of Palermo and analyses, among its features, those which particularly influence its energy and environmental performance. For this purpose the building typologies introduced by the urban regulations can be useful for a categorization on the basis of the most recent European researches.
Maximización de la eficiencia y búsqueda de la celeridad en el arbitraje: entre el mito, la sublimación y la cuarta revolución industrial (4.0)
2018
En: Arbitraje: revista de arbitraje comercial y de inversiones. eISSN. 2603-9281. vol. 11, n. 1, 2018, pp 17-53 La globalización ha supuesto una transformación en el ámbito económico, generando un cambio de calidad y de cantidad en el tráfico económico, pero también en la posible conflictividad que puede provocarse. Esta situación ha incidido en el crecimiento de arbitrajes, apareciendo e impulsándose arbitrajes sectoriales, con protagonistas nuevos, con participación incluso del Estado en algunos arbitrajes. Todo ello ha favorecido cambios en las legislaciones nacionales arbitrales, en los reglamentos de las instituciones arbitrales, y en el modus operandi de operadores sociales, económico…
Energy management strategy to reduce pollutant emissions during the catalyst light-off of parallel hybrid vehicles
2020
Abstract The transportation sector is a major contributor to both air pollution and greenhouse gas emissions. Hybrid electric vehicles can reduce fuel consumption and CO2 emissions by optimizing the energy management of the powertrain. The purpose of this study is to examine the trade-off between regulated pollutant emissions and hybrid powertrain efficiency. The thermal dynamics of the three-way catalyst are taken into account in order to optimize the light-off. Experimental campaigns are conducted on a spark-ignition engine to introduce simplified models for emissions, exhaust gas temperature, catalyst heat transfers and efficiency. These models are used to determine the optimal distribut…
Evaluation of performance and efficiency and type approval of an electrically assisted bicycle drive
2013
The diffusion of electrically assisted bicycles gives rise to the need of the evaluation of the performance and efficiency of the electric drive that supply it. In this paper, is presented a test bench for the estimation of the electric drive output torque under several speed and load conditions. Moreover, the test bench detects the electrical and mechanical parameters that allow to evaluate the electrical drive efficiencies. The test bench has been designed in agreement with the Directive 2002/24/EC of the European Parliament since it detects the maximum continuous rated power (that must be lower than 0.25 kW) and evaluates if the output is progressively reduced and finally cut off as the …