Search results for "Variables"

Psycholinguistic variables in visual word recognition and pronunciation of European Portuguese words: a mega-study approach

2019

An increasing number of psycholinguistic studies have adopted a megastudy approach to explore the role that different variables play in the speed and/or accuracy with which words are recognised and/or pronounced in different languages. However, despite evidence for deep and shallow orthographies, little is known about the role that several orthographic, phonological and semantic variables play in visual word recognition and word production of words from intermediate-depth languages, as European Portuguese (EP). The current study aimed to overcome this gap, by collecting lexical decision and naming data for a large pool of words selected to closely represent the diversity of the EP language.…

Cohesive explicitness and explicitation in an English-German translation corpus

2007

Explicitness or implicitness as assumed properties of translated texts and other texts in multilingual communication have for some time been the object of speculation and, at a later stage, of more systematic research in linguistics and translation studies. This paper undertakes an investigation of explicitness/implicitness and related phenomena of translated texts on the level of cohesion. A corpus-based research architecture, embedded in an empirical research methodology, will be outlined, and first results and possible explanations will be discussed. The paper starts with a terminological clarification of the concepts of ‘explicitness’ and ‘explicitation’ in terms of dependent variables …

Positive Teacher Affect and Maternal Support Facilitate Adjustment After the Transition to First Grade

2016

This longitudinal study, conducted among a sample of Finnish primary-school children, examined the proposition that a single high-quality relationship (either with a teacher or a parent) can buffer against adjustment problems. Teachers rated the externalizing problems and prosocial behaviors of 378 children in Grade 1 and again in Grade 2. Relationship measures gathered in Grade 1 included teacher reports of positive affect for the child and mother reports of support for the child. The results supported our proposition by showing that for child adjustment after the transition to primary school it was critical to have at least one high-quality relationship either with a teacher or a parent. …

The cross-lagged relations between children’s academic skill development, task-avoidance, and parental beliefs about success.

2011

Abstract This longitudinal study investigated the cross-lagged associations between children’s academic skill development, task-avoidant behaviour in the context of homework, and parental beliefs about their child’s success from kindergarten to Grade 2. The participants were 1267 children. The children’s pre-skills were assessed at the end of the kindergarten year, and math and reading skills at the end of Grade 1 and Grade 2. Parents provided ratings of their beliefs about their children’s school success and task-avoidant behaviour with regard to homework at the end of Grades 1 and 2. The results showed that children’s math and reading skills predicted children’s task-avoidant behaviour re…

Predictors of mothers' and fathers' teaching of reading and mathematics during kindergarten and Grade 1

2010

Abstract The aim of the present longitudinal study was to investigate factors contributing to mothers' and fathers' teaching of reading and mathematics to their children during kindergarten and Grade 1. It was assumed that mothers' and fathers' teaching during kindergarten would be influenced by their socioeconomic status and their own learning difficulties, whereas during Grade 1 by their children's academic performance. A total of 189 mothers and 165 fathers filled in questionnaires regarding their teaching of reading and mathematics twice, once in kindergarten and once in Grade 1. Children's reading and mathematics performance was also examined twice, once in kindergarten and once in Gra…

Design of unknown inputs proportional integral observers for TS fuzzy models

2014

In this paper the design of unknown inputs proportional integral observers for Takagi-Sugeno (TS) fuzzy models subject to unmeasurable decision variables is proposed. These unknown inputs affect both state and output of the system. The synthesis of these observers is based on two hypotheses that the unknown inputs are under the polynomials form with their kth derivatives zero for the first one and bounded norm for the second one, hence two approaches. The Lyapunov theory and L"2-gain technique are used to develop the stability conditions of such observers in LMIs (linear matrix inequality) formulation. A simulation example is given to validate and compare the proposed design conditions for …

Product and process innovation and total factor productivity: Evidence for manufacturing in four Latin American countries

2017

The literature on firm productivity recognizes the important role played by firm innovation activities on firm productivity in developed countries. However, the literature for developing and emerging economies is scarce and far from conclusive. The aim of this paper is to study the innovation–productivity link (distinguishing between process and product innovations) for manufacturing at the firm level for four Latin American countries (two classified as upper-middle income countries by the World Bank—Argentina and Mexico—and two as lower-middle income—Colombia and Peru). We aim testing whether the level of development is a mediating factor in the innovation–productivity link. The data used …

Accretion disk coronae of Intermediate Polar Cataclysmic Variables: 3D MagnetoHydroDynamic modeling and thermal X-ray emission

Intermediate Polar Cataclysmic Variables (IPCVs), also known as DQ Her stars after their prototype, are cataclysmic variable stars characterized by the presence of an accreting, magnetic, rapidly rotating white dwarf surrounded by an accretion disk magnetically truncated by the inner magnetosphere of the star. These objects exhibit a magnetic field of the order of few MG, able to disrupt the inner part of the disk but not strong enough to inhibit the formation of a disk. These stars show a strong X-ray emission with a stochastic pulsation that in some cases arise in the inner part of the disk. However, the observations of the X-ray luminosity for these objects do not match the expected valu…

Returns to Schooling in Spain. How Reliable Are IV Estimates?

2001

This paper studies the Ordinary Least-Squared (OLS) and Instrumental Variables (IV) estimates of the returns to schooling for male workers in Spain. OLS estimates are often biased due to the endogeneity of schooling, measurement errors or omitted variables. Proper IV estimates correct this bias. The reliability of family background, natural experiments (based on changes in the education system and season of birth) and the availability of a college in the province is checked using Spanish data. The results suggest that background and college availability are valid instruments and that the IV estimates of the returns to schooling are higher than OLS estimates. These results are in line with t…

Prognostic factors and predictors of outcome in children with autism spectrum disorder: the role of the paediatrician.

2021

Abstract Background Autism spectrum disorder is a complex condition with wide variation in type and severity that involves persistent challenges in social interaction, speech and nonverbal communication, restricted/repetitive behaviours and adaptive behaviours. In recent years, research has deepened the study of the predictive factors of optimal outcome, intended as indicators of positive trajectory in children with a previous diagnosis of autism who, after a therapeutic path, show a significant reduction in the “core” symptoms of autism and a positive evolution in social, adaptive, affective, and relational skills. Methods The study included 40 children aged 21 to 66 months, enrolled betwe…