Search results for "S'"

Matrix solutions of diffusion equation

2002

Some evolution equations arising in physics

1983

In this paper we consider a new series of evolution equations generalizing the Korteweg-deVries (KdV) and Burgers equations, and we report recent advances on these equations together with the physical phenomena where they arise. In particular we consider a generalized Burgers' equation and we sketch a method for solution in series by using the theory of Sobolevskij and Tanabe. Then we study the KdV equation with nonuniformity terms and we describe various physical interpretation of this equation. We consider various particular cases in which varying solitonic solutions exist. Also we sketch a unicity theorem. Finally modified Burgers-KdV equations are considered.

Maximizing the information gain of a single ion microscope using bayes experimental design

2016

We show nanoscopic transmission microscopy, using a deterministic single particle source and compare the resulting images in terms of signal-to-noise ratio, with those of conventional Poissonian sources. Our source is realized by deterministic extraction of laser-cooled calcium ions from a Paul trap. Gating by the extraction event allows for the suppression of detector dark counts by six orders of magnitude. Using the Bayes experimental design method, the deterministic characteristics of this source are harnessed to maximize information gain, when imaging structures with a parametrizable transmission function. We demonstrate such optimized imaging by determining parameter values of one and …

VORTEX LAYERS IN THE SMALL VISCOSITY LIMIT

2006

In this paper we suppose that the initial datum for the 2D Navier–Stokes equations are of the vortex layer type, in the sense that there is a rapid variation in the tangential component across a curve. The variation occurs through a distance which is of the same order of the square root of the viscosity. Assuming the initial as well the matching (with the outer flow) data analytic, we show that our model equations are well posed. Another necessary assumption is that the radius of curvature of the curve is much larger than the thickness of the layer.

La famiglia come esistenziale

2014

Management and Outcome of Mucosal Injury During Pyloromyotomy--An Analytical Survey Study.

2015

Different approaches of dealing with mucosal injury during pyloromyotomy for hypertrophic pyloric stenosis have been described. There is, however, no consensus on the best technique to use. We conducted a survey among International Pediatric Endosurgery Group (IPEG) members on their experience of mucosal injuries during pyloromyotomy, the way in which these were handled, any modification in subsequent postoperative care, and impact on outcome.A confidential survey was sent to IPEG members querying demographic data, number of pyloromyotomies performed, operative approach, incidence of mucosal injury, intraoperative management, and postoperative consequences. Statistical analysis was performe…

Parents' math-gender stereotypes, children's self-perception of ability, and children's appraisal of parents' evaluations in 6-year-olds

2015

Abstract This study investigated for the first time the relations between parents' math–gender stereotypes, parents' evaluations of children's math ability, children's math ability self-perception, and children's appraisal of parents' evaluations, addressing 253 Italian children as young as 6 years of age, their mothers, fathers, and teachers. Novel results revealed the specific role of mothers' math–gender stereotypes in relation to daughters, but not sons: Mothers' math–gender stereotypes predicted girls' math self-perception which, in turn, predicted girls' appraisal of both mothers' and fathers' evaluations of their ability. Importantly, children's appraisal of parents' evaluations was …

Eritrean teachers' perceptions of learner-centred interactive pedagogy

2021

In most sub-Saharan African countries, mainstreaming learner-centred interactive pedagogy (LCIP) is defined as a policy priority. Similarly, Eritrea has adopted the same policy to seek a solution to its educational challenges. Rather than rote mastery of course content, the LCIP approach prioritises learners in constructing knowledge through interaction, active participation and controlling the learning process. This paper explores secondary school teachers' perceptions of LCIP and their challenges in implementing this pedagogical approach. Constructivism and sociocultural learning theory are considered conceptual frameworks to highlight LCIP as an approach for teaching and learning. Qualit…

Commento agli articoli 543-566, in Codice di procedura civile ragionato.

2017

Il lavoro consiste in un commento a tutte le disposizioni del codice di procedura civile in materia di espropriazione presso terzi, con richiami alle principali leggi speciali, e in un commento alle norme del codice di procedura civile sul pignoramento immobiliare e sull'intervento dei creditori nella espropriazione immobiliare The essay is a commentary on civile procedure rules concernig enforcement of civil obbligation, with reference to the seizure of debtors's credit towards other people (e.g. attaching of erarnings) and with respect to the seizure of real estate.

Les effets de la réforme sur le sentiment de professionnalisation des futurs enseignants

2013

S’inscrivant dans un cadre européen, la formation des enseignants en France fait l’objet, depuis 2005, de réformes profondes dont l’enjeu porte sur un renforcement des compétences professionnelles et un adossement des savoirs enseignés à la recherche. Partant de données longitudinales recueillies auprès de 3 générations d’étudiants inscrits dans le nouveau master « enseigner, éduquer, apprendre » ouvert à l’université de Bourgogne en 2010, cette recherche met en lumière la façon dont les étudiants se destinant au professorat des écoles perçoivent la qualité de leur professionnalisation. Malgré le sentiment de ne pas être suffisamment préparés pour l’exercice de leur métier, le discours des …