Search results for "Map"

Analytic capacity and quasiconformal mappings with $W^{1,2}$ Beltrami coefficient

2008

We show that if $\phi$ is a quasiconformal mapping with compactly supported Beltrami coefficient in the Sobolev space $W^{1,2}$, then $\phi$ preserves sets with vanishing analytic capacity. It then follows that a compact set $E$ is removable for bounded analytic functions if and only if it is removable for bounded quasiregular mappings with compactly supported Beltrami coefficient in $W^{1,2}$.

Hölder continuity of Sobolev functions and quasiconformal mappings

1993

Perspectives et bilan après 20 ans de recherche au bas de la pyramide, une étude bibliométrique pour le futur du management international

2021

Cet article propose une analyse bibliométrique du champ des stratégies au bas de la pyramide (BoP) fondée sur 364 articles citants issus de la plateforme Web of Science fournissant une base de 15 292 références. Différents outils sont mobilisés, pour mettre en évidence la structure du champ BoP d’une part, et pour identifier les tendances du front de recherche d’autre part. Six groupes structurant le champ émergent des analyses, chacun mettant en évidence un courant de recherche, et cinq tendances rythment les recherches actuelles sur le BoP. Ces analyses permettent de proposer quatre perspectives pour le futur du management international.

The role and practice of interpersonal relationships in European early education settings: sites for enhancing social inclusion, personal growth and …

2007

This study sought to identify and compare the characteristics of the social pedagogic context of cognitive activities in a sample of early education settings in six European countries (England, Fin...

Attention-Based Landmark Selection in Autonomous Robotics

2007

This paper describes a robotic architecture that uses visual attention mechanisms for autonomous navigation in unknown indoor environments. A foveation mechanism based on a bottom-up attention system allows the robot to autonomously select landmarks, defined as salient points in the camera images. Landmarks are memorized in a behavioral fashion by coupling sensing and acting to achieve a representation that is view and scale independent. Selected landmarks are stored in a topological map. During the navigation a top-down mechanism controls the attention system to achieve robot localization. Experiments and results show that our system is robust to noise and odometric errors, being at the sa…

Attention-based environment perception in autonomous robotics

2007

This paper describes a robotic architecture that uses visual attention mechanisms for autonomous navigation in unknown indoor environments. A foveation mechanism based on classical bottom-up gaze shifts allows the robot to autonomously select landmarks, defined as salient points in the camera images. Landmarks are memorized in a behavioral fashion, coupling sensing and acting to achieve a representation view and scale independent. Selected landmarks are stored in a topological map; during the navigation a top-down mechanism controls the attention system to achieve robot localization. Experiments and results show that our system is robust to noise and odometric errors, being at the same time…

Development of a Roadmap for the Implementation of a Sustainable Mobility Action Plan in University Campuses of Emerging Countries

2022

Universities are centers of knowledge and their Campuses are like small cities, thus making them the ideal place to develop, apply and evaluate policies and tools for innovative mobility solutions that can subsequently be extended to other contexts. A review of mobility measures in different European Universities has revealed that many of them apply policies to promote sustainable mobility, but there is a significant lack of standardized mobility plans and roadmaps for their successful implementation. The objective of the present work is to develop a successful roadmap, which is necessary for the smooth implementation of a mobility plan, as it has been found through a thorough review of goo…

Economic Theorizing, Discursive Analysis and Pluralism in the Classroom - Evidence from Postgraduate Teaching in a French University

2014

Can students examine the discursive strategies employed by economists so that the former think critically about the underlying theoretical forces described by the latter? Are economic processes ontologically dependent on the narratives used by economists to account for real phenomena? In this article, we draw both on Wheat's mapping techniques to homogenise theoretical economic discourse and on Pilkington's attempt to combine economics with language for specific purposes. We show that informed and fruitful discussions in the classroom necessitate the use of a new median pluralistic discourse that is yet to be elaborated upon, both by university and secondary school teachers. Finally, in ord…

Integrating geophysical and geostatistical techniques to map the spatial variation of clay

2012

Abstract The development of subsoil models represents an important aspect of land resource evaluation, because they can provide an accurate description of the spatial variability in soil properties. Although direct soil sampling provides the best information in terms of soil properties, sample density is rarely adequate to accurately describe the horizontal and vertical variability of the physical properties of soil. Geophysical methods, such as Ground Penetrating Radar (GPR) and electromagnetic induction (EMI) sensors, provide rapid, non-invasive and exhaustive ways for subsoil characterization. Moreover, geophysical methods can be integrated with geostatistics to map soil properties. This…

The multidisciplinary origin of soil geography: A review

2018

Abstract Soil geography should be clearly recognized as a sub-discipline of physical geography and soil science, but at various times over the last century it was accepted as a complementary and descriptive sub-discipline of botany, agronomy and geology. In other words, there was not a clear consensus about its definition and origins. The main goal of this paper is to conduct a historical review (s. XX-XXI) of soil geography to clarify its origin, early methods, first authors and the importance of its interdisciplinary perspective within the scientific community. We found that soil geography was considerably advanced by the work of K.D. Glinka (1867–1927), one of Dokuchaev's students, who c…