Search results for "Arity"

Lenses on very curved zones of a singular line field of ${\mathbb C}^2$ or of a singular plane field of ${\mathbb C}^3$

2020

We renormalize, using suitable lenses, small domains of a singular holomorphic line field of ${\mathbb C}^2$ or plane field of ${\mathbb C}^3$ where the curvature of a plane-field is concentrated. At a proper scale the field is almost invariant by translations. When the field is integrable, the leaves are locally almost translates of a surface that we will call {\it profile}. When the singular rays of the tangent cone (a generalization to a plane-field of the tangent cone of a singular surface is defined) are isolated, we obtain more precise results. We also generalize a result of Merle (\cite{Me}) concerning the contact order of generic polar curves with the singular level $f=0$ when $\ome…

Stronger C -odd color charge correlations in the proton at higher energy

2023

The non-forward eikonal scattering matrix for dipole-proton scattering at high energy obtains an imaginary part due to a $C$-odd three gluon exchange. We present numerical estimates for the perturbative Odderon amplitude as a function of dipole size, impact parameter, their relative azimuthal angle, and light-cone momentum cutoff $x$. The proton is approximated as $\psi_\mathrm{qqq}|qqq\rangle + \psi_\mathrm{qqqg}|qqqg\rangle$, where $\psi_\mathrm{qqq}$ is a non-perturbative three quark model wave function while the gluon emission is computed in light-cone perturbation theory. We find that the Odderon amplitude increases as $x$ decreases from 0.1 to 0.01. At yet lower $x$, the reversal of t…

Existence of positive solutions for nonlinear Dirichlet problems with gradient dependence and arbitrary growth

2018

We consider a nonlinear elliptic problem driven by the Dirichlet $p$-Laplacian and a reaction term which depends also on the gradient (convection). No growth condition is imposed on the reaction term $f(z, \cdot,y)$. Using topological tools and the asymptotic analysis of a family of perturbed problems, we prove the existence of a positive smooth solution.

Echelles et auto-organisation du système de transport collectif Brazzavillois

2010

International audience; When you arrive for the first time in Brazzaville, you are struck by the huge number of motorized vehicles related to public transport. Buses, minibuses, collectives cabs… all these vehicles seem to evolve in the most absolute anarchy without the slightest indication for the user. But, behind this visible disorder is hided a very well organized logic structured in a completely self-organized way. After the following voluntary liquidation of the "Society of urban transport of Brazzaville" in 1989 the private sector is now dominating the market related to transport of peoples. After an immersion within the environment of Brazzaville carriers, various strategies of move…

Some nonlinear aspects of a pulsar magnetosphere

2006

Päiväkodin varajohtaja johtajan työparina

2015

Tiivistelmä. Mykrä, Eveliina. 2015. Päiväkodin varajohtaja johtajan työparina. Varhaiskasvatustieteen pro gradu-tutkielma. Kasvatustieteiden laitos. Jyväskylän yliopisto. 62 sivua + liitteet. Päiväkodin varajohtaja on lastentarhanopettaja, joka lapsiryhmätyöskentelyn lisäksi toimii päiväkodin johtajan sijaisena tämän poissa ollessa. Lisäksi varajohtajan tehtäviin kuuluu avustaminen johtajan tehtävissä sekä johtajan työparina toimiminen. Tämän tut-kimuksen tarkoitus oli selvittää, millaista on päiväkodin johtajan ja varajohtajan yhteis-työ. Lisäksi tutkimus selvitti varajohtajan työnkuvaan kuuluvia vastuualueita sekä vara-johtajan tehtäviä hänen toimiessaan johtajan sijaisena. Tutkimus selvi…

Bodily expressions of dominance in children's reasoning : an analysis of multimodal and sociometric data

2015

This case study explores how two Hungarian children argue for their choices in a decision- making task in which they were asked to pick objects useful on a deserted island. The study involves an analysis of the multimodal data of the video-recorded tasks, carried out as pair-work, and sociometric background data that were collected in order to build an initial understanding of the participants’ social relations. The aim of the study is to discover how dominance relations manifest in bodily acts during reasoning. Results show that dominance was expressed by specific embodied strategies such as by taking away objects or replacing them, and that the bodily gestures were closely intertwined wit…

Role of the N-*(1535) in the J/psi -> pp and J/psi -> p(+)Lambda reactions

2009

We study the J/psi -> p eta p and J/psi -> pK(+)Lambda reactions with a unitary chiral approach. We find that the unitary chiral approach, which generates the N-*(1535) dynamically, can describe the data reasonably well, particularly the ratio of the integrated cross sections. This study provides further support for the unitary chiral description of the N-*(1535). We also discuss some subtle differences between the coupling constants determined from the unitary chiral approach and those determined from phenomenological studies

Mappings of L p -integrable distortion: regularity of the inverse

2016

Let X be an open set in R n and suppose that f : X → R n is a Sobolev homeomorphism. We study the regularity of f −1 under the L p -integrability assumption on the distortion function Kf . First, if X is the unit ball and p > n−1, then the optimal local modulus of continuity of f −1 is attained by a radially symmetric mapping. We show that this is not the case when p 6 n − 1 and n > 3, and answer a question raised by S. Hencl and P. Koskela. Second, we obtain the optimal integrability results for |Df −1 | in terms of the L p -integrability assumptions of Kf . peerReviewed

Mappings of Lp-integrable distortion: regularity of the inverse

2016

Let be an open set in ℝn and suppose that is a Sobolev homeomorphism. We study the regularity of f–1 under the Lp-integrability assumption on the distortion function Kf. First, if is the unit ball and p > n – 1, then the optimal local modulus of continuity of f–1 is attained by a radially symmetric mapping. We show that this is not the case when p ⩽ n – 1 and n ⩾ 3, and answer a question raised by S. Hencl and P. Koskela. Second, we obtain the optimal integrability results for ∣Df–1∣ in terms of the Lp-integrability assumptions of Kf.