Search results for "DM"
showing 10 items of 8932 documents
Políticas de acceso abierto a la ciencia en las universidades españolas
2013
El objetivo del artículo es analizar el estado de la cuestión de las políticas en favor del acceso abierto (OA) a la ciencia en las universidades españolas. Para ello se han establecido cinco grandes mecanismos de intervención (la creación de infraestructuras y prestación de servicios, la comunicación y difusión, la incentivación económica, la coordinación institucional así como la reglamentación u obligación) que permiten llevar a cabo políticas a favor del acceso abierto y que hemos utilizado para el análisis y la valoración de la situación. La recogida de datos se ha basado en un cuestionario enviado a los vice-rectores de investigación y se ha complementado con la consulta de directorio…
Retour d'expérience d'une première évaluation du Plan Réussite en Licence à l'Université de Bourgogne : les leçons d'un difficile recueil des points …
2014
Cet article présente les différents enseignements que l'on peut tirer d'un suivi à caractère administratif du plan réussite en licence (PRL) qui a proposé de nouvelles formes d'accompagnement vers la réussite des étudiants dans les universités françaises à partir de 2007. Il analyse les points de vue des enseignants et des étudiants impliqués dans les dispositifs d'aide et de soutien proposés aux étudiants suite à l'instauration nationale de ce plan. L'étude de l'expérience de l'Université de Bourgogne, dont l'évaluation des dispositifs d'aide et de soutien aux étudiants a été pilotée par le Centre d'innovation pédagogique et d'évaluation (CIPE), montre la prégnance des perceptions enseigna…
Audit and Earnings Management in Spanish SMEs
2016
Abstract Evidence about the relation between earnings management and voluntary audits is scarce, and there is no research about the effectiveness of mandatory audits to improve earnings quality. Using a sample of Spanish SMEs, where some companies are mandatorily audited and some are exempt from audit, we examine if audits, either mandatory or voluntary, help to improve accounting quality by constraining earnings management. We also examine differences between voluntary and mandatory audits, as well as the role of Big 4 and Middle-Tier auditors. After controlling for other characteristics that affect earnings management, we find that audited companies have lower absolute discretionary accru…
Investor Sentiment and Accruals Anomaly
2017
This paper examines whether investors’ sentiment affectsaccruals anomaly across 15 European countries. In line with recent evidence for the U.S., we find that sentiment causes accruals mispricing across European countries. The effect is pronounced for stocks whose valuations are highly subjective and difficultto arbitrage. Our results also reveal evidence in favor of managers' opportunistic disclosure behavior. The accruals reported are higher in high sentiment periods as compared with low sentiment periods. Our cross-country analysisprovidesevidence that sentiment influences accruals anomaly in countries with weaker outside shareholder rights, lower legal enforcement, lower equity market d…
Determination of Cd, Cu, Pb and Zn content of infant formulas by differential pulse anodic stripping voltammetry (DPASV).
1994
The differential pulse anodic stripping voltammetry (DPASV) method described is based on the one reported by Hasse et al., but adapted to normal laboratory conditions. The values obtained in the estimation of the analytical parameters (linearity, detection and quantification limits, precision and accuracy) show that in the conditions described the method is sensitive enough, reliable and useful for determining these elements in infant formulas. A comparison between DPASV and atomic absorption spectroscopy (AAS) methods in the conditions described here shows that the former is less sensitive but that they are similar in precision. The cadmium, copper, lead and zinc contents of different type…
Acetaldehyde operant self-administration in rats: focus on D2-receptor activation.
2013
Acetaldehyde (ACD), ethanol first metabolite, is rewarding in rodents and humans; it induces “place preference”, is self-administer directly in the VTA, orally in an operant/conflict paradigm and increases DA neurons’ firing. This research aims at investigating DA2-receptor role in the reinstatement of acetaldehyde operant-drinking behaviour, following induction, maintenance and abstinence in the rat. Male Wistar rats are trained to orally self-administer ACD solution (3.2% v/v) or water, in an operant chamber under a FR1. Afterwards animals undergo cyclic periods of deprivation and relapse to ACD. The effect ofD2-receptor activation by quinpirole (0.03mg/kg,i.p.) on operant ACD self-admini…
Les petites histoires extraordinaires des courses ordinaires: vous ne retournerez plus faire vos courses de la même façon après la lecture de cet ouv…
2011
National audience; ...
Multidrug-resistant Gram-negative post-neurosurgical meningitis and the role of intraventricular colistin: a case series
2021
: The aim of this study was to report the clinical experience of intraventricular colistin for the treatment of multi-resistant Gram-negative post-surgical meningitis in a tertiary hospital. Post-neurosurgical meningitis (PNM) is one of the life-threatening complications of neurosurgical procedures, and is frequently sustained by Acinetobacter baumannii and Klebsiella pneumoniae. Here we describe our experience of five cases of PNM caused by gram-negative multi-drug resistant (MDR) bacteria, treated with intraventricular (IVT) colistin, admitted to the Neurosurgery Unit of A.R.N.A.S. Civico of Palermo, Italy, from January 2016 to June 2020. In four patients the cerebrospinal fluid (CSF) cul…
Symptom variability and control in COPD: Advantages of dual bronchodilation therapy
2017
Abstract Background Chronic obstructive pulmonary disease (COPD) is a heterogeneous disorder characterized by usually progressive development of airflow obstruction that is not fully reversible. While most patients will experience symptoms throughout the day or in the morning upon awakening, many patients do not experience their symptoms as constant but report variability in symptoms during the course of the day or over time. Symptom variability adversely affects patients' health status and increases the risk of COPD exacerbations. Methods We examined data from the literature on symptom variability and control in patients with COPD, with focus on the use of inhaled bronchodilator therapy wi…
Automatic detection and classification of retinal vascular landmarks
2014
The main contribution of this paper is introducing a method to distinguish between different landmarks of the retina: bifurcations and crossings. The methodology may help in differentiating between arteries and veins and is useful in identifying diseases and other special pathologies, too. The method does not need any special skills, thus it can be assimilated to an automatic way for pinpointing landmarks; moreover it gives good responses for very small vessels. A skeletonized representation, taken out from the segmented binary image (obtained through a preprocessing step), is used to identify pixels with three or more neighbors. Then, the junction points are classified into bifurcations or…