Search results for "CEI"

José Vidal-Beneyto (1927-2010). In memoriam

2010

J. Vidal-Beneyto, un intelectual brillante

2010

UWB Channel Measurements for Hand-Portable Devices: A Comparative Study

2007

On-body UWB signal propagation is analyzed using two different types of UWB antennas. For the study, measurements of the frequency response by means of a VNA (vector network analyzer) are performed at 2001 discrete frequency points in the 3 to 6 GHz range. Separated measures are taken for four different transmitter positions on the head and six receiver positions on the body. Channel estimation parameters, such as mean excess delay, delay spread and path loss are obtained. Results are similar for both types of antennas regarding path loss exponent and average power delay profiles.

Tilted discs and central retinal vein occlusion.

1993

Isolation, purification, LC–MS/MS characterization and reactive oxygen species induced by fumonisin B1 in VERO cells

2010

Fumonisins are mycotoxins produced by Fusarium verticillioides that commonly contaminate maize and maize products. The present work shows the results of a comparative study of three different fermentation's techniques (solid and liquid medium of corn and a solid agarized medium) for the production of fumonisins B-1, B-2 and B-3 with strains of F. verticillioides. The solid medium of corn was the most effective in the production of fumonisins, being Fumonisin B-1 the one produced with higher concentration, so the extract obtained by solid fermentation process was used for FB1 purification. Fumonisins characterization and quantification were performed with reversed-phase high-performance liqu…

Late gadolinium enhancement-cardiovascular magnetic resonance identifies coronary artery disease as the aetiology of left ventricular dysfunction in …

2009

Aims We evaluated the ability of late gadolinium enhancement (LGE) using cardiovascular magnetic resonance (CMR) to identify acute new-onset heart failure (HF) with left ventricular systolic dysfunction (LVSD), whether or not in relation to underlying coronary artery disease (CAD), in patients with no clinical evidence of associated ischaemic cardiomyopathy. Methods and results Hundred consecutive patients admitted with acute new-onset decompensated HF and EF ,40%, with no clinical or electrocardiographic data suggestive of CAD. The patients were classified according to the presence or absence of significant CAD (stenosis � 70% in at least one major vessel). Twenty-one patients (21%) had si…

INDAGINE DELLE RELAZIONI FILOGENETICHE INTERNE AI GALERICINAE (EULIPOTYPHLA: ERINACEOMORPHA: ERINACEIDAE), IN PARTICOLARE RIGUARDO AI GENERI ENDEMICI…

2021

Gender differences in career advancements in Italian universities over the last 20 years

2023

This article deals with gender differences in Italian universities in the last 20 years in terms of career advancements. Data are taken from the MUR (Ministry of University and Research) archive. In Italy, career advancements are still much easier for men, even if the gender gap has slowly narrowed in the last decades. The novelty of this paper is the analysis through event-history analysis models on the time elapsed to receive a promotion (from assistant to associate professor and from associate to full professor). The event-history analysis applied to career advancements has revealed that women take, on average, about one and a half more years than men to advance, with some differences am…

Wage Gap as a Possible Determinant of Gender Inequality

2021

Recent academic researchers have indicated that there are possible inequalities concerning work and pay in different countries, professions and economic sectors. The aim of current research is to analyse recent scientific findings on the wage gap depending on gender and empirical data in Latvia using EU-SILC surveys, Labour Surveys and monthly statistical data on wages and salaries for women and men. The findings indicated that in various economic fields and occupations women were under-represented, and amongst most of these fields the modal net wage interval for women was lower than the modal net wage interval for men. It was also concluded that in January 2018 the average gross income fro…

Interference Cancellation for LoRa Gateways and Impact on Network Capacity

2021

In this paper we propose LoRaSyNc (LoRa receiver with SyNchronization and Cancellation), a second generation LoRa receiver that implements Successive Interference Cancellation (SIC) and time synchronization to improve the performance of LoRa gateways. Indeed, the chirp spread spectrum modulation employed in LoRa experiences very high capture probability, and cancelling the strongest signal in case of collisions can significantly improve the cell capacity. An important feature of LoRaSyNc is the ability to track the frequency and clock drifts between the transmitter and receiver, during the whole demodulation of the interfered frame. Due to the use of low-cost oscillators on end-devices, a s…