Search results for "efficiency."
showing 10 items of 1362 documents
N use and partitioning in coriander (Coriandrum sativum L.) after organic and conventional N fertilization
2010
In coriander, a well known spice herb, many studies concerning the effect of N fertilization have been conducted in special areas where the cultivation of such plant has a major importance, such as India. Limited information is available as concerns the response of coriander to N fertilization under Mediterranean climatic conditions, above all when organic N fertilizers (mandatory when organic cropping management is chosen) are used. This work refers about some observations realised from 2004 to 2006 by an experiment on organic and mineral N fertilization techniques in coriander, carried on in the experimental farm “Sparacia” (Cammarata, AG, Sicily). Similarly to what suggested for other sp…
Comparative efficiency of green and conventional bonds pre- and during COVID-19: An asymmetric multifractal detrended fluctuation analysis
2021
Abstract Motivated by the lack of research on price efficiency dynamics of green bonds and the impact of the COVID-19 on the pricing of fixed-income securities, this study investigates the comparative efficiency of green and conventional bond markets pre- and during the COVID-19 pandemic applying asymmetric multifractal analysis. Specifically, the multifractal scaling behaviour is examined separately during upward and downward trends in bond markets using the asymmetric multifractal detrended fluctuation analysis (A-MF-DFA) approach. The empirical findings confirm the presence of asymmetric multifractality in the green and traditional bond markets. Not surprisingly, inefficiency in both bon…
The Territorial Organization of Public Tourism Statistics in Spain: A Problem of Date Generation and Use in Geomarketing
2021
The changes produced in the last decade in tourism have generated new demands for statistical information that is comparable over time and space, on a microdata scale and focused on knowledge of tourist behaviour. However, the decentralization of the production of tourism statistics in Spain, derived from the division of powers between the Spanish state and the autonomous communities, has produced the emergence of various and multiple alternative entities for the generation and transfer of tourism data. This fragmentation produces a high dysfunctionality and inefficiency, due to, among other circumstances, a high heterogeneity and duplication of data, a heterogeneity of methodology and type…
The Rotary Aero Engine from 1908 to 1918
2012
The rotary aero engine is a special type of air-cooled radial engine, where the cylinders are arranged like the spokes of a wheel and turn around the crankshaft. The propeller is connected to the cylinders, while the crankshaft is fixed to the frame. The rotary aero engine, developed in 1908, set new standards of power and light weight within the aircraft industry. It was adopted by many pioneer aviators and widely used to set records of endurance, speed and height. Many aero engine manufacturers produced different models and variants of this type of engine, which was extensively used until the end of the First World War. The latest evolution of the rotary engine was the counter-rotary arra…
Do microfinance rating assessments make sense? An analysis of the drivers of the MFI ratings
2011
Rating assessments of microfinance institutions are claimed to measure a combination of creditworthiness, trustworthiness and excellence in microfinance. Using a global dataset covering reports from 324 microfinance institutions, this study suggests that these ratings are mainly driven by size, profitability, and risk. The ratings do not seem to capture the double bottom-line objective of microfinance institutions, as our analyses are unable to prove any statistical relationship between microfinance ratings and the social objectives of these institutions. Moreover, the association between operational efficiency and microfinance ratings appears weak. Although there are some minor differences…
La nuova disciplina delle notificazioni all'imputato
2023
La Riforma Cartabia interviene sul tema delle notificazioni ripensando alle forme e rimarcandone il ruolo chiave nel- le dinamiche del processo penale. Il sistema che ne deriva è un sistema ibrido che, alternando modalità telemati- che e modalità tradizionali, ruota attorno a due meccanismi di snellimento dell’iter, e cioè gli avvisi e il domicilio dichiarato o eletto, che sembrano operare in controtendenza rispetto alla regola generale di favorire la conoscenza effettiva dell’atto, mettendo a serio rischio le garanzie in nome della tanto declamata ‘efficienza’. The Cartabia Reform intervenes on the issue of notifications by rethinking the forms and emphasizing their key role in the dynamic…
Determination of Evapotranspiration and Crop Coefficient of Cactus Pear (Opuntia ficus-indica Mill.) with an Energy Balance Technique
2013
A micrometeorological approach based on surface renewal technique was adopted to estimate evapotranspiration fluxes and crop coefficient data from an irrigated cactus pear (Opuntia ficus-indica Mill.) orchard under Mediterranean climatic conditions. High-frequency temperature readings were taken above the canopy top in order to get surface renewal sensible heat flux values (HSR). These values were compared against eddy covariance sensible heat fluxes (HEC) for calibration. Latent heat flux (or evapotranspiration, ET) was obtained as the residual of the energy balance equation using HSR. In field measurements of biophysical crop features, physiological characteristic and soil hydraulic compo…
Value congruence in health care priority setting: social values, institutions and decisions in three countries
2014
AbstractMost developed democracies have faced the challenge of priority setting in health care by setting up specialized agencies to take decisions on which medical services to include in public health baskets. Under the influence of Daniels and Sabin’s seminal work on the topic, agencies increasingly aim to fulfil criteria of procedural justice, such as accountability and transparency. We assume, however, that the institutional design of agencies also and necessarily reflects substantial value judgments on the respective weight of distributive principles such as efficiency, need and equality. The public acceptance of prioritization decisions, and eventually of the health care system at lar…
Herding in the cryptocurrency market: CSSD and CSAD approaches
2018
Abstract We analyse the existence of herding in the cryptocurrency market through the cross-sectional standard (absolute) deviation of returns. Our results show that extreme dispersion of returns is explained by rational asset pricing models although it is possible to observe herding during down markets, which highlights the inefficiency and risk of cryptocurrencies. We also observe that the smallest digital currencies are herding with the largest ones, thus traders base their decisions on the performance of the main cryptocurrencies. However, the herding phenomenon cannot be solely attributed to Bitcoin, since the rest of the market is not herding with the main cryptocurrency.
INFLUENCE OF THE ANODIZATION CONDITIONS ON THE ELECTRONIC PROPERTIES AND CRYSTALLOGRAPHIC STRUCTURES OF THE CORROSION LAYERS ON TUNGSTEN. A PHOTOELEC…
1983
ABSTRACT The influence of morphology, composition and crystallographic structure on the photoelectrochemical behaviour of anodic oxide films on tungsten obtained in various conditions of anodization has been investigated. Different photocurrent spectra and absorption edges were obtained for each type of film. Optical band gaps ranging between 2.55 eV and 3.15 eV were determined for crystalline and amorphous WO 3 films grown in different conditions. The low quantum efficiency of the anodic films must be attributed to the presence of an amorphous (a-W0 3 ) film which controls the transport of the injected photocarriers.