Search results for "Toe"

"Angeli sigillati". I bambini e la sofferenza nell'opera di F.M. Dostoevskij.

2010

The Dialectic Between Strength and Weakness in Dostoevsky (1860-1864). Ideology as Key for the Interpretation

2013

Los estudios críticos de la obra de Dostoievski evitan relacionarla con su ideología. El presente trabajo parte del supuesto de que la confrontación de la obra literaria con la ideología del autor puede proporcionar algunas claves decisivas para la comprensión de conceptos compartidos por ambos campos. Se ha analizado las categorías de fortaleza y debilidad, como nódulos importantes en la malla conceptual-imaginativa. El trabajo se limita a un periodo esencial de la obra de Dostoievski, 1860-1864, puesto que hay un consenso generalizado en que es clave para la evolución de su obra madura. Critical studies of Dostoevsky’s work usually avoid relating it to ideology. This essay assumes that th…

Psychosocial maladjustment in adolescence: parental socialization, self-esteem, and substance use

2018

Este estudio analiza la vulnerabilidad de los adolescentes a par- tir de la autoestima y el consumo de sustancias, y la protección o riesgo del estilo de socialización. La muestra fue de 1445 adolescentes españoles (59.4% mujeres), 600 tempranos de 12 a 15 años (41.5%) y 845 tardíos de 16 a 17 años (58.5%). Las familias se clasificaron en una de las cuatro tipo- logías: indulgente, autorizativa, autoritaria y negligente. El ajuste de los hijos se midió con autoestima (emocional, familiar y física) y consumo de sustan- cias (alcohol, tabaco, cannabis y drogas de síntesis). Los resultados mostra- ron que en la adolescencia tardía la vulnerabilidad fue mayor que en la tem- prana. Se encontró u…

Very narrow-bandwidth tunable infrared difference frequency generation with injection-locked dye lasers

1989

Two flashlamp pumped dye lasers of very high spectral quality are mixed in a LiIO3 crystal to generate a tunable infrared beam through the difference frequency mixing. Thanks to the injection-locking process of the pulsed dye lasers leading to a linewidth of 6 MHz with peak powers of about 10 kW, we obtain an IR beam tunable from 3.5 to 5.9 μm with a peak power of 40 W and a linewidth of 9 MHz. As an application we present a spectrum of N2O obtained by differential absorption near 1880 cm−1. The lines of thisQ-branch are Doppler limited at the working pressure (102 Pa).

Random Laser Based on TiO2–Nanomembranes

2012

We demonstrated directional random laser emission from a dye-doped polymer film in the presence of a scattering medium consisting of TiO 2 nanomembranes. Evidence for coexistence of extended and localized modes are presented.

Electro-optical characterization of ruthenium-based dye sensitized solar cells: A study of light soaking, ageing and temperature effects

2017

Abstract In this work, we report on the electro-optical characterization of Dye Sensitized Solar Cells (DSSCs) which use ruthenium complexes as sensitizers. In particular, several kinds of measurements have been performed to study the electrical performances and the efficiency levels of the cells at different operating conditions. In detail, the measurements have been conducted at varying temperatures and hours of light soaking. Our results show that the short circuit current density J SC , the open circuit voltage V OC and the conversion efficiency η increase with the hours of light soaking, while they decrease with temperature. A thorough investigation on the light soaking process at the …

One diode circuital model of light soaking phenomena in Dye-Sensitized Solar Cells

2018

Abstract In this work, we report on the modelling of light soaking effect on Ruthenium-based Dye Sensitized Solar cells (DSSCs). Such a phenomenon can be detected when exposing the cells at increasing hours of illumination and produces a reversible performance increase. Starting from the results obtained through the electro-optical characterization of the cells, we applied a one-diode circuital-model. Our results show a good agreement between the experimental and the simulated data, with a mean square error in the order of 10−12 and a maximum error in current lower than 0.6%. Finally such results allowed us to infer some precise trends followed by the cells main electrical parameters and of…

Electrical and photoelectrical measurements on ZnO-Nanowires coated with PEDOT:PSS for Dye-Sensitized Solar Cells

2011

ABSTRACTDye-sensitized solar cells composed of an n-doped ZnO nanowire array and a p-doped polymer layer appears to be a promising candidate for low-cost production of environment-friendly solar cells. In this work, we investigate hybrid devices consisting of a transparent conducting oxide (TCO) substrate, ZnO-nanowires (ZnO-NW) or a sol-gel prepared ZnO layer, a ruthenium dye (N719) and a PEDOT:PSS or P3HT layer. The dense polycrystalline ZnO layer is able to prevent short circuits, which have a strong effect on the performance of the solar cells. This is demonstrated by the use of only the ZnO layer which improves the open circuit voltage by a factor of 2 and the efficiency by a factor of…

Vector representation of non-standard spellings using dynamic time warping and a denoising autoencoder

2017

The presence of non-standard spellings in Twitter causes challenges for many natural language processing tasks. Traditional approaches mainly regard the problem as a translation, spell checking, or speech recognition problem. This paper proposes a method that represents the stochastic relationship between words and their non-standard versions in real vectors. The method uses dynamic time warping to preprocess the non-standard spellings and autoencoder to derive the vector representation. The derived vectors encode word patterns and the Euclidean distance between the vectors represents a distance in the word space that challenges the prevailing edit distance. After training the autoencoder o…

Children at risk for dyslexia show deficient left-hemispheric memory representations for new spoken word forms

2021

Developmental dyslexia is a specific learning disorder with impairments in reading and spelling acquisition. Apart from literacy problems, dyslexics show inefficient speech encoding and deficient novel word learning, with underlying problems in phonological processing and learning. These problems have been suggested to be related to deficient specialization of the left hemisphere for language processing. To examine this possibility, we tracked with magnetoencephalography (MEG) the activation of the bilateral temporal cortices during formation of neural memory traces for new spoken word forms in 7–8-year-old children with high familial dyslexia risk and in controls. The at-risk children impr…