Search results for "function"
showing 10 items of 14432 documents
FUNCIONAMIENTO EJECUTIVO TEMPRANO EN NIÑOS CON DIFICULTADES MATEMÁTICAS PERSISTENTES
2016
El objetivo del presente estudio consistió en examinar las diferencias en las funciones ejecutivas de inhibición y memoria de trabajo (MT) evaluadas en Educación Infantil entre sujetos con dificultades persistentes en el área de matemáticas en 2º de Educación Primaria y niños con un rendimiento adecuado. La muestra final del estudio estuvo conformada por 180 niños (inicialmente compuesta por 209 preescolares), de los cuales un 6.6% presentaron dificultades matemáticas persistentes (n = 12) y el 45.5% mostraron un rendimiento adecuado en ambas mediciones (n = 82). En Educación Infantil, se administraron seis tareas neuropsicológicas relacionadas con las funciones ejecutivas de inhibición, MT…
INSTITUTIONALISATION OF RETURN MIGRATION IN LATVIA: THE CASE OF REGIONAL COORDINATORS
2021
Emigration countries such as Latvia institutionally should address the negative consequences of the ageing populations' economic and demographic challenges. To this aim, in 2018 network of five regional return migration coordinators was established to foster and nationally encourage return migration. The primary function of the regional coordinator is to foster and facilitate requests of potential return migrants.Drawing on interview materials collected in 2020 with return migration coordinators at the regional level – Latgale, Vidzeme, Zemgale, Kurzeme and Riga, we illustrate good-practice of return migration institutionalisation in Latvia.Our study focuses on three main fields of interest…
Retoriskās iezīmes veselīgās ēdināšanas uzņēmumu interneta reklāmas rakstos
2022
Retorisko iezīmju lietojums pārliecināšanas nolūkā tiek praktizēts jau tūkstošiem gadu. Pirmās teorijas par ietekmēšanas rīkiem tika zinātniski klasificētas Senajā Grieķijā, kad filozofi raksturoja, ko nozīmē runāt ētiski, loģiski un pārliecinoši. Līdz pat šai dienai šo filozofu darbs tiek uzskatīts par pamatu retorikas zinātnei. Retorisko iezīmju klātbūtne valodā ir dabiska un visuresoša, tomēr mūsdienās tā ir plaši pielietota prakse dažādās nozarēs, ieskaitot reklāmdošanu. Šī darba mērķis ir pētīt retorisko iezīmju biežumu un dažādību veselīgo ēdināšanas kompāniju tiešsaistes reklāmrakstos. Diskursa analīze apstiprina, ka retorisko iezīmju lietojums mūsdienu reklāmrakstos ir plašs, daudzp…
Low-temperature Molecular Layer Deposition Using Monofunctional Aromatic Precursors and Ozone-based Ring Opening Reactions
2017
Molecular layer deposition (MLD) is an increasingly used deposition technique for producing thin coatings consisting of purely organic or hybrid inorganic–organic materials. When organic materials are prepared, low deposition temperatures are often required to avoid decomposition, thus causing problems with low vapor pressure precursors. Monofunctional compounds have higher vapor pressures than traditional bi- or trifunctional MLD precursors, but do not offer the required functional groups for continuing the MLD growth in subsequent deposition cycles. In this study, we have used high vapor pressure monofunctional aromatic precursors in combination with ozone-triggered ring-opening reactions…
Robustifying principal component analysis with spatial sign vectors
2012
In this paper, we apply orthogonally equivariant spatial sign covariance matrices as well as their affine equivariant counterparts in principal component analysis. The influence functions and asymptotic covariance matrices of eigenvectors based on robust covariance estimators are derived in order to compare the robustness and efficiency properties. We show in particular that the estimators that use pairwise differences of the observed data have very good efficiency properties, providing practical robust alternatives to classical sample covariance matrix based methods. peerReviewed
Defying Stereotypes with Nanodiamonds: Stable Primary Diamondoid Phosphines
2016
International audience; Direct unequal C-H bond difunctionalization of phosphorylated diamantane was achieved in high yield from the corresponding phosphonates. Reduction of the functionalized phosphonates provides access to novel primary and secondary alkyl/aryl diamantane phosphines. The prepared primary diamantyl phosphines are quite air stable compared to their adamantyl and especially alkyl or aryl analogues. This finding is corroborated by comparing the singly occupied molecular orbital energy levels of the corresponding phosphine radical cations obtained by density functional theory computations.
Molecular methods to evaluate AMF functionality in soil and in roots
2005
International audience
An Italian experience on crash modeling for roundabouts
2015
In the last few years a considerable amount of safety models and evaluation tasks have been developed and specifically dedicated to roundabouts. Several safety performance functions (SPFs), indeed, have been implemented for roundabouts worldwide. Since SPFs are developed using crashes, traffic volume and other characteristics of a specific site (or geographical area), their direct transferability to other contexts different from those in which SPFs were calibrated is not always possible and, in any case, it must be done very carefully. A safety performance function cannot be used without a transferability evaluation for sites not included in the geographic area for which it was developed. S…
Hacia la implementación de un modelo de atención temprana por parte de una Organización Paraguaya
2020
Implementation science has been developed to help understand why evidence-based practices are not adopted as rapidly as they might. We describe here the process a rehabilitation center in Paraguay is undergoing to transform itself into a state-of-the-art early intervention program. We describe the organization and its contextual strengths and barriers, the model it chose to implement, and the implementation procedures it has attempted. The implications for model fidelity are highlighted, as this organization needed to make adaptations to the model as designed, to fit the particular context of its mission and the Paraguayan culture. Features of the Routines-Based Model are described. La cie…
Beta-decay studies for applied and basic nuclear physics
2020
In this review we will present the results of recent beta-decay studies using the total absorption technique that cover topics of interest for applications, nuclear structure and astrophysics. The decays studied were selected primarily because they have a large impact on the prediction of a) the decay heat in reactors, important for the safety of present and future reactors and b) the reactor electron antineutrino spectrum, of interest for particle/nuclear physics and reactor monitoring. For these studies the total absorption technique was chosen, since it is the only method that allows one to obtain beta decay probabilities free from a systematic error called the Pandemonium effect. The me…