Search results for "testing."
showing 10 items of 1654 documents
Le varietà di grano duro bio per le prossime semine.
2019
Nelle prove del 17° anno di sperimentazione varietale nazionale sul frumento duro in coltivazione biologica, tra le 19 varietà valutate in 7 campi di prova sono da evidenziare i risultati delle varietà Antalis ed Egeo che alla buona e stabile produzione hanno associato anche un tenore proteico e un peso ettolitrico superiori alle medie.
A Branch-and-Cut method for the Capacitated Location-Routing Problem
2011
International audience; Recent researches in the design of logistic networks have shown that the overall distribution cost may be excessive if routing decisions are ignored when locating depots. The Location-Routing Problem (LRP) overcomes this drawback by simultaneously tackling location and routing decisions. The aim of this paper is to propose an exact approach based on a Branch-and-Cut algorithm for solving the LRP with capacity constraints on depots and vehicles. The proposed method is based on a zero-one linear model strengthened by new families of valid inequalities. The computational evaluation on three sets of instances (34 instances in total), with 5–10 potential depots and 20–88 …
A new large scale laboratory: The LEDA research centre (Laboratory of Earthquake engineering and Dynamic Analysis)
2017
Recently, the field of earthquake engineering experienced substantial enhancements due to numerous results of experimental and theoretical researches. Modern technical codes recognized the last advances in this field and provided new solutions for the structural assessment and design of buildings. However, the need for large scale testing is still taking several open questions, especially for the design of civil infrastructures, and experimental activity on full scale specimens has become necessary. This paper presents the main testing facilities of a new research centre, namely the Laboratory of Earthquake engineering and Dynamic Analysis (LEDA) of the University of Enna “Kore”. In particu…
Problemas en la estimación y en el contraste de los rendimientos anormales a largo plazo: Estado de la cuestión
2002
-Jose.E.Farinos@uv.es -Ana.M.Ibanez@uv.es El paradigma de la eficiencia ha sido puesto en entredicho en las últimas décadas como consecuencia de la obtención de rendimientos anormales, estadística y económicamente significativos, durante amplios periodos de tiempo tras algunas importantes decisiones empresariales. No obstante, los problemas conceptuales y estadísticos que presenta la medición y contrastación de los rendimientos anormales a largo plazo ha supuesto que la evidencia obtenida pase a calificarse como anomalía. Dada la escasa proliferación de este tipo de estudios en nuestro mercado y el desafortunado desarrollo de algunos de los existentes, en este trabajo presentamos estos prob…
Discrimination based on place of residence and access to employment
2014
International audience; The purpose of this study is to assess the degree of employment discrimination against young people according to their place of residence. We considered several spatial scales in order to measure the effect of the reputation of the administrative department or county, the town or municipality and of the local neighbourhood. The evaluation is performed using correspondence test data carried out between October 2011 and February 2012. We studied 2988 candidacies that were submitted to 498 job offers (waiters and cooks) within the restaurant industry and located in the Paris area. Statistical and econometric results pointed out that resident effect is significant and im…
Stress test impact and bank risk profile: Evidence from macro stress testing in Europe
2019
Abstract This study investigates the risk profile of banks that get a significant capital level reduction in the EU-wide stress test exercises. Using the CAMELS multifaceted risk approach, we look into the connection between the bank risk factors and the macro stress testing impact on capital. The results show that financial institutions that are inefficient or complex, with low profitability levels and small loan portfolio, receive highly negative results in the stress tests. As this risk profile is not consistent over time, the results support the stress tests disciplinary role, suggesting risk management strategy adjustment through consideration of prior stress test outcomes.
Do firms share the same functional form of their growth rate distribution? A statistical test
2014
We introduce a new statistical test of the hypothesis that a balanced panel of firms have the same growth rate distribution or, more generally, that they share the same functional form of growth rate distribution. We applied the test to European Union and US publicly quoted manufacturing firms data, considering functional forms belonging to the Subbotin family of distributions. While our hypotheses are rejected for the vast majority of sets at the sector level, we cannot rejected them at the subsector level, indicating that homogenous panels of firms could be described by a common functional form of growth rate distribution.
Inference for Lorenz curve orderings
1999
In this paper we consider the issue of performing statistical inference for Lorenz curve orderings. This involves testing for an ordered relationship in a multivariate context and making comparisons among more than two population distributions. Our approach is to frame the hypotheses of interest as sets of linear inequality constraints on the vector of Lorenz curve ordinates, and apply order-restricted statistical inference to derive test statistics and their sampling distributions. We go on to relate our results to others which have appeared in recent literature, and use Monte Carlo analysis to highlight their respective properties and comparative performances. Finally, we discuss in gener…
A novel EDA variant causing X-linked hypohidrotic ectodermal dysplasia: Case report
2021
Abstract Hereditary ectodermal dysplasias are a complex group of inherited disorders characterised by abnormalities in two or more ectodermal derivatives (skin, nails, sweat glands, etc.). There are two main types of these disorders – hidrotic and hypohidrotic/anhidrotic ectodermal dysplasias. Hypohidrotic ectodermal dysplasia (HED) or Christ-Siemens-Touraine syndrome (OMIM: 305100 ) occurs in 1 out of 5000–10,000 births [19] and has an X-linked recessive inheritance pattern (X-linked hypohydrotic ectodermal dysplasia – XLHED) [2] . The main cause of XLHED is a broad range of pathogenic variants in the EDA gene (HGNC:3157, Xq12-13) which encodes the transmembrane protein ectodysplasin-A [4]…
Rasch measurement in educational contexts Special issue 1: Rasch modeling in educational testing
2011
This is the first of two special journal issues on Rasch measurement in educational contexts. Most of the articles compiled in these two issues originate from a symposium of the same title held in ...