Search results for "47"
showing 10 items of 1382 documents
Efficacy and Efficiency of Italian Energy Policy: The Case of PV Systems in Greenhouse Farms
2014
The production of energy from renewable sources is a form of energy production that has less impact on the environment than the traditional one. For the farmer this new form of production represents an opportunity, especially for the economic benefits that can produce, both in terms of the incentives provided by the public operator and for higher revenues, deriving from the sale of energy back to the grid and/or the savings generated by self-consumed energy, that help to increase the farmer’s income. In this paper, we analyzed a case study of a farm that has realized a grid-connected photovoltaic (PV) system on a greenhouse. In particular, firstly the farm profitability has been estimated a…
Comparison of Hybrid Blends for Solar Cell Application
2010
In blended hybrid systems distinct micro- or nanostructured materials can be formed by phase separation. Network structures of particles or rods in a polymer matrix can be developed via self-assembly. We use this blending approach to compare active materials for application in solar cell devices. Blends were fabricated from either poly(hexylthiophene) P3HT or poly(triphenylamine) PTPA mixed with nanocrystalline TiO 2 rods. In this manner, we compare two different hole conducting polymers in their performance in photovoltaic devices, while experimental conditions are kept identical. We find that the choice of solvent and photovoltaic characterization conducted in inert atmosphere is of impor…
An Environmental Analysis of the Effect of Energy Saving, Production and Recovery Measures on Water Supply Systems under Scarcity Conditions
2015
Water is one of the primary resources provided for maintaining quality of life and social status in urban areas. As potable water is considered to be a primary need, water service has usually been managed without examining the economic and environmental sustainability of supply processes. Currently, due to increases in energy costs and the growth of environment preservation policies, reducing water leakage, energy consumption and greenhouse gas (GHG) production have become primary objectives in reducing the environmental footprint of water service. The present paper suggests the implementation of some performance indicators that show the interdependence of water loss, energy consumption and…
An Adaptive Alternating Direction Method of Multipliers
2021
AbstractThe alternating direction method of multipliers (ADMM) is a powerful splitting algorithm for linearly constrained convex optimization problems. In view of its popularity and applicability, a growing attention is drawn toward the ADMM in nonconvex settings. Recent studies of minimization problems for nonconvex functions include various combinations of assumptions on the objective function including, in particular, a Lipschitz gradient assumption. We consider the case where the objective is the sum of a strongly convex function and a weakly convex function. To this end, we present and study an adaptive version of the ADMM which incorporates generalized notions of convexity and penalty…
Pugnas por el control de la universidad después de la expulsión de los jesuitas
1990
Mi interés se centra en el análisis de los efectos del extrañamiento en los estudios universitarios y concretamente en Valencia. Resulta evidente que el decreto de extrañamiento produjo una efervescencia reformista en la Universidad. Es lógico porque, desde el momento en que empezó la campaña antijesuita, una de las razones alegadas fue la decadencia cultural que habían propiciado los padres de la Compañía a quienes se les atribuía el control de los instrumentos de poder. Así, los reformistas establecieron siempre una conexión entre la llegada al poder de los manteístas y la reforma de las letras. Desde esa perspectiva se comprende la expectación suscitada por el decreto de expulsión de los…
Nouae coelestium orbium theoricae congruentes cum obseruationibus N. Copernici
Sig. A-Ff4 Els grav. xil. - Port. arquitextònica grav. - Frisos. - Capitals grav Text amb postil·les marginals. - Reclams
A spasso per la "Costituzione della Repubblica italiana"
2011
Labor Productivity Growth: Disentangling Technology and Capital Accumulation
2014
We adopt a counterfactual approach to decompose labor productivity growth into growth of Technological Productivity (TEP), growth of the capital-labor ratio and growth of Total Factor Productivity (TFP). We bring the decomposition to the data using international countrysectoral information spanning from the 1960s to the 2000s and a nonparametric generalized kernel method, which enables us to estimate the production function allowing for heterogeneity across all relevant dimensions: countries, sectors and time. As well as documenting substantial heterogeneity across countries and sectors, we nd average TEP to account for about 44% of labor productivity growth and TEP gaps with respect to the…
La intervención de la Junta de Comercio de Valencia en la política arrocera de la monarquía en la segunda mitad del siglo XVIII: los informes emitido…
2005
El análisis de los informes emitidos por la Junta de Comercio de Valencia en la segunda mitad del siglo XVIII revela la influencia que tuvo la institución en la conformación de la política arrocera de la monarquía. Al igual que ésta, su posición evolucionó desde la hostilidad hacia el cultivo del arroz en la etapa inicial de su intervención hasta la defensa de sus ventajas en la década de 1790. Los argumentos esgrimidos en ambos sentidos permiten identificar los intereses económicos que condicionaron sus planteamientos. Igualmente, el análisis del marco socioeconómico en el que se insertaba la institución contribuye a explicar las razones de la evolución experimentada. The analysis of the r…
Between the Darkness of Barbarism and the Light of Civilization: British Images of the Finn in the Late Eighteenth Century
2014
This article aims to show that it was the British travellers (Coxe, Tooke, Clarke,et al.) to Finland in the late eighteenth century who discovered Finland for theBritish reading public. As they distinguished the Finns as a separate ‘race’ fromthe Russians, the Swedes, and the Lapps, they contributed to the proto-racialistimage of them that would become popular in the nineteenth century. BecauseSweden had become an important maritime trading partner (in iron ore, tar, andtimber) to the British, its eastern part, Finland, also became an interesting countryto visit en route from Stockholm to Saint Petersburg (or from Saint Petersburgto Stockholm). The travellers were astonished to realize that…