Search results for " PL"
showing 10 items of 24591 documents
Safety Evaluation of Turbo-Roundabouts with and without Internal Traffic Separations Considering Autonomous Vehicles Operation
2021
The paper presents a microsimulation approach for assessing the safety performance of turbo-roundabouts where Cooperative Autonomous Vehicles “CAVs” have been introduced into the traffic mix alongside conventional vehicles “CVs”. Based on the analysis of vehicle trajectories from VISSIM and subsequent analysis of traffic conflicts through the Surrogate Safety Assessment Model (SSAM), the research aims to evaluate the safety benefits of turbo-roundabouts where the lanes are physically separated by raised curbs, compared to roundabouts without such curbs. The paper will then describe the methodological path followed to build VISSIM models of turbo-roundabouts with and without raised curbs in …
Consuetudine, Nuove Costituzioni e Tutela dell’Ambiente in Africa
1998
L'articolo analizza il tema della tutela dell'ambiente in Africa sotto il profilo pluralista, con particolare attenzione al fenomeno costituzionale.
Las Prácticas en Empresas en la Universidad: Diseño y Validación de un Modelo de Gestión de la Calidad
2015
Esta investigación se ha planteado como una necesidad de reflexionar y profundizar sobre las prácticas en empresas como metodología formativa destacada en la preparación del universitario, así como abordar el papel de los agentes implicados y las relaciones que se establecen entre ellos, haciendo especial atención a los tutores. Para ello, hemos realizado dos estudios correlativos que nos han permitido configurar nuestro Modelo de Gestión de la Calidad de las Prácticas en Empresas Universitarias, para que pueda ser aplicado en cualquier titulación, centro o Universidad. En el primer estudio, hemos concebido un Modelo de calidad de las prácticas en empresas, validado por un panel de expertos…
Gli acciai intelligenti del futuro
2009
Effect of the extensional flow on the properties of oriented nanocomposite films for twist wrapping
2011
In this study, we examined the mechanical behavior of nanocomposite films based on polyethylene (PE) and pristine PE films. The films were prepared by film blowing and were then cold-drawn at low temperature. The experimental results show that cold drawing significantly enhanced the orientation; with increasing draw ratio (DR), the elastic modulus and tensile strength of the PE films strongly increased, particularly in the presence of the organoclay. To obtain polymeric films suitable for twist wrapping, the films must be sufficiently stiff so that no shrinkage or elastic recovery occur during or after twisting. The elongation at break and the yield strain sharply decreased with orientation…
Strictly correlated electrons approach to excitation energies of dissociating molecules
2019
In this work we consider a numerically solvable model of a two-electron diatomic molecule to study a recently proposed approximation based on the density functional theory of so-called strictly correlated electrons (SCE). We map out the full two-particle wave function for a wide range of bond distances and interaction strengths and obtain analytic results for the two-particle states and eigenenergies in various limits of strong and weak interactions, and in the limit of large bond distance. We then study the so-called Hartree-exchange-correlation (Hxc) kernel of time-dependent density functional theory which is a key ingredient in calculating excitation energies. We study an approximation b…
Board structures, liberal countries, and developed market economies. Do they matter in environmental reporting? An international outlook
2019
This is the pre-peer reviewed version of the following article: Board structures, liberal countries, and developed market economies. Do they matter in environmental reporting? An international outlook, which has been published in final form at: https://doi.org/10.1002/bse.2275. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. Previous empirical evidence has shown the effect of most corporate governance mechanisms on corporate social responsibility and environmental disclosure. However, there is scant empirical evidence that examines the influence of liberal countries, developed market economies, and board s…
Family history to type 2 diabetes influence on body parameters of young soccer players
2011
The aim of our study was to analyze the difference of phenotype in healthy soccer players with family history of type 2 diabetes and healthy soccer players without family history of type 2 diabetes. The anthropometric parameters and body composition was analysed. The group with positive family history (FH+) had the highest values of wrist circumference (p<0.05) associated with not statistically significant increase of body fat mass and fat free mass. Also, the heart function was analysed. FH+ players had a diastolic basal pressure values higher than other group, but other functional parameters were the same. Analysing lung function indicators, FH+ players showed significant greater FEV1 and…
The impact of periodic interviews on unemployment duration : Evidence from the 2017 Finnish reform
2023
In 2017, a Finnish policy reform intensified the Public Employment Services' practice of periodically interviewing unemployed jobseekers. This study used high-quality administrative data to analyse the effect of interviews on unemployment duration. We used a difference-in-differences approach that exploited regional variations in treatment intensity. Our results show that a 10 percentage point increase in interview probability increased the monthly hazard rate of employment by 3.1 per cent, with the effect being strongest among jobseekers aged 25–34 and jobseekers with a low education level. Also, our results demonstrate a strong effect on participation in active labour market programmes. p…
Técnicas de Evaluación en educación primaria y secundaria
2022
La evaluación en el aula es una acción imprescindible en el sistema educativo y por ende en la enseñanza. El gran desafío que se plantea en nuestro sistema educativo es la evaluación del alumnado en el aula, cómo mejorar la evaluación del alumnado dentro del sistema educativo. Esta simple pero tan profunda cuestión, cómo mejorar la evaluación, implica un esfuerzo de toda la comunidad educativa. Realizar una investigación respecto a la evaluación implica enfrentarse a un gran titán, ya que el estudio de la evaluación es un gran reto de la sociedad actual. Al hablar del modo en que se realiza la evaluación en el aula, se involucra a multitud de agentes: profesorado, alumnado, familia, sistema…