Search results for "elementary"
showing 10 items of 863 documents
Multialternating graded polynomials and growth of polynomial identities
2012
Let G be a finite group and A a finite dimensional G-graded algebra over a field of characteristic zero. When A is simple as a G-graded algebra, by mean of Regev central polynomials we construct multialternating graded polynomials of arbitrarily large degree non vanishing on A. As a consequence we compute the exponential rate of growth of the sequence of graded codimensions of an arbitrary G-graded algebra satisfying an ordinary polynomial identity. In particular we show it is an integer. The result was proviously known in case G is abelian.
Mappings of finite distortion: a new proof for discreteness and openness
2008
We give a new and elementary proof of the known result: a non-constant mapping of finite distortion f : Ω ⊂ ℝn → ℝn is discrete and open, provided that its distortion function if n = 2 and that for some p > n − 1 if n ≥ 3.
The nanoscale structure of the Pt-water double layer under bias revealed
2019
The nanoscopic mass and charge distribution within the double layer at electrified interfaces plays a key role in electrochemical phenomena of huge technological relevance for energy production and conversion. However, in spite of its importance, the nanoscopic structure of the double layer and its response to an applied potential is still almost entirely unknown, even for Pt-water, the most fundamental electrochemical interface. Using a general ab initio methodology which advances previous models towards a dynamic and more realistic description of an electrode/electrolyte interface, we simulate for the first time the nanoscopic structure of the Pt-water double layer and its response to an …
The EPPS16 nuclear PDFs
2017
We report on EPPS16 - the first analysis of NLO nuclear PDFs where LHC p-Pb data (Z, W, dijets) have been directly used as a constraint. In comparison to our previous fit EPS09, also data from neutrino-nucleus deeply-inelastic scattering and pion-nucleus Drell-Yan process are now included. Much of the theory framework has also been updated from EPS09, including a consistent treatment of heavy quarks in deeply-inelastic scattering. However, the most notable change is that we no longer assume flavour-blind nuclear modifications for valence and sea quarks. This significantly reduces the theoretical bias. All the analysed data are well reproduced and the analysis thereby supports the validity o…
Recording Support Measures in the Sequential Pedagogical Documents of Children With Special Education Needs
2019
This study investigates the descriptions of support measures in the sequential pedagogical documents (individual education plans or programs and others) of children with special education needs from early childhood education and care to preprimary education. According to the previous research, the role of pedagogical work is largely disregarded in these documents, which typically focus on describing children’s challenges instead of support measures. In this study, the sequential pedagogical documents ( N = 257) of 64 Finnish children were studied for approximately 3 to 6 years, and the data were analyzed by investigating the textual and content-related coherence, as well as the linguistic …
Student Learning in Public and Private Primary Schools in Madagascar
2003
03058; International audience; This article examines the progress of primary education in Madagascar. The challenge facing policy makers is enormous: how to maintain (or indeed, improve) learning across schools within Madagascar based on the data from the Conference des Ministries de l'Education des Pays Ayant le Francais en Partage in five African countries where common tests were administered to second- and fifth-graders. Beyond documenting the aggregate differences across sectors, the extent to which differences across schools, particularly between those in the public and private sectors, are associated with pupils' socioeconomic background, difference sin school inputs, and gaps across …
Seeking New Perspectives on the Development of Teacher Education – A Study of the Finnish Context
2013
Studies show that changes in teacher education around the world occur slowly and are difficult to implement. This study aims to contribute to the discussion on the major resources for and obstacles to developing teacher education and finding novel solutions to overcome the obstacles. Resources and obstacles were investigated in the context of academic and university-based teacher education in Finland. Findings revealed three major challenges: (a) obstacles in renegotiating professional identity, (b) internal competition between subject-matter groups within the department, and (c) discrepancies between individual agency and organizational development. Based on the findings, this study argues…
Los peces: una unidad didáctica en una escuela "diferente"
2014
En este estudio de casos se describe y se interpreta reflexivamente una experiencia didáctica centrada en el tema “Los Peces”, y desarrollada en un primer grado de educación primaria dentro de una escuela innovadora. Se llevó un registro sistemático de lo sucedido, se recopilaron documentos y se realizaron entrevistas. Para la interpretación de lo observado, se trabajó con siete categorías que intentan destacar importantes características de la experiencia: un aprendizaje vinculado al mundo exterior, disponibilidad de suficientes recursos, la excesiva delimitación del tema en estudio, apertura frente a estructura en el trabajo didáctico, niños y niñas protagonistas, una escuela de rica vida…
Electromagnetic Form Factors in the Time Like Domain
2008
The electromagnetic form factors in the time like domain can be accessed by the reaction p ¯ p → e + e − or its time inversed process. Despite a long standing experimental effort to determine these form factors, the precision in the knowledge of the ratio | G E | / | G M | ist still very poor in the time like domain. All world data suffer from limited statistics and therefore have used the hypothesis of | G E | = | G M | in order to extract a value for | G M | . While there is no theory argument for this hypothesis, recent JLAB data from polarisation transfer in elastic electron scattering show, that this hypothesis does not hold. Only a few data points allow the determination of | G E | / …