Publications associées à Migration des oiseaux

Migration distance from birthplace and its association with relative income and employment share among heterosexual couples in Switzerland

Vincent Kaufmann, Guillaume Simon Joseph Drevon, Alexis Gumy, Gil Viry, Florian Lucien Jacques Masse

Among heterosexual couples, employment of the female partner may suffer from household migration often driven by the job of the male partner. Most research has traditionally focused on the distance moved after couple formation and has neglected how far par ...

2024

City, State, Transnational Space

Garance Clément

This chapter takes stock of contemporary migration by breaking with a few myths and by distinguishing between interregional and international migration. It shows how new research paradigms have relativized the importance of the state as the preferred frame ...

ISTE Wiley2023

The end of urban sprawl? Internal migration across the rural-urban continuum in Switzerland, 1966-2018

Mathias Lerch

In high-income countries, migration redistributed populations from congested city centres into the sparsely populated outskirts, raising challenges to environmental and population health and the conservation of biodiversity. We evaluate whether this periur ...

2023

International Migration And The Growth Of Zurich, 1836-1949

Mathias Lerch

The role played by international migration and its interactions with other demographic components in the process of city growth remains underappreciated. We analyze trends in natural increase and in net internal and international migration in Zurich during ...

2021

21 000 birds in 4.5 h: efficient large‐scale seabird detection with machine learning

Devis Tuia, Benjamin Alexander Kellenberger

We address the task of automatically detecting and counting seabirds in unmanned aerial vehicle (UAV) imagery using deep convolutional neural networks (CNNs). Our study area, the coast of West Africa, harbours significant breeding colonies of terns and gul ...

2021

Beryllium global erosion and deposition at JET-ILW simulated with ERO2.0

Olivier Sauter, Ambrogio Fasoli, Basil Duval, Stefano Coda, Jonathan Graves, Yves Martin, Duccio Testa, Patrick Blanchard, Henri Weisen, Federico Nespoli, Alessandro Pau, Miguel Fernández Ruiz, Cristian Sommariva, David Pfefferlé, Richard Pitts, Jonathan Marc Philippe Faustin, Yann Camenen, Dalziel Joseph Wilson, Jan Horacek, Hamish William Patten, Javier García Hernández, Marco Wischmeier, Nicola Vianello, Mikhail Maslov, Yao Zhou, Davide Galassi, Antonio José Pereira de Figueiredo, Liang Yao, Samuel Lanthaler, Bernhard Sieglin, Otto Asunta

The recently developed Monte-Carlo code ERO2.0 is applied to the modelling of limited and diverted discharges at JET with the ITER-like wall (ILW). The global beryllium (Be) erosion and deposition is simulated and compared to experimental results from pass ...

Elsevier2019

Migration of Mg and other interstitial metal dopants in GaN

Alfredo Pasquarello, Giacomo Francesco Leonardo Miceli

The minimumenergy paths for the migration of interstitialMgin wurtziteGaNare studiedthroughdensityfunctional calculations. The study also comprises Li, Na, and Be dopants to examine the dependence on size and charge of the dopant species. In all cases cons ...

Wiley-Blackwell2017

Detecting animals in African Savanna with UAVs and the crowds

Stéphane Joost, Devis Tuia

Unmanned aerial vehicles (UAVs) offer new opportunities for wildlife monitoring, with several advantages over traditional field-based methods. They have readily been used to count birds, marine mammals and large herbivores in different environments, tasks ...

Elsevier2017

Boundaries and urban worlds: the contested ethnoscape of expatriates in Geneva

Luca Giovanni Pattaroni, Hossam Adly El Shentenawy

Numerous researches, and more particularly in the field of migration and transnational mobility. However, studies of the impact of migrants on cities themselves remain insufficient. Based on ethnographic work within the United Nations office in Geneva, thi ...

2016

Climate or migration: what limited European beech post-glacial colonization?

Basil Andrew Stansfield Davis

AimDespite the recent improvements made in species distribution models (SDMs), assessing species' ability to migrate fast enough to track their climate optimum remains a challenge. This study achieves this goal and demonstrates the reliability of a process ...

Wiley-Blackwell2013

Drivers of Holocene Land Cover Change in Europe

Pamela Collins

The modern vegetation of Europe is a product of its history. Climate change, plant migration, and human activity have all been important drivers of Holocene (11,500 years ago to the present) vegetation dynamics, but it is difficult to disentangle the relat ...

EPFL2013

Migration dynamics of breast cancer cells in a tunable 3D interstitial flow chamber

Philippe Renaud, Melody Swartz, Ulrike Haessler, Jeremy Teo

The migration of cells such as leukocytes, tumor cells, and fibroblasts through 3D matrices is critical for regulating homeostasis and immunity and for driving pathogenesis. Interstitial flow through the extracellular matrix, which can substantially increa ...

2012

Elucidating the Role of Matrix Stiffness in 3D Cell Migration and Remodeling

Matthias Lütolf, Adrian Ranga, Philipp Sebastian Lienemann, Katarzyna Mosiewicz, Martin Ehrbar

Reductionist in vitro model systems which mimic specific extracellular matrix functions in a highly controlled manner, termed artificial extracellular matrices (aECM), have increasingly been used to elucidate the role of cell-ECM interactions in regulating ...

Elsevier2011

MaSM: Efficient Online Updates in Data Warehouses

Anastasia Ailamaki, Manoussos Gavriil Athanassoulis, Radu Ioan Stoica

Data warehouses (DW) have been traditionally optimized for readonly query performance, allowing only offline updates at night, essentially trading off data freshness for performance. The need for 24x7 operations in global markets and the rise of online and ...

2011

River Networks as Ecological Corridors: a Complex Systems Perspective for Integrating Hydrologic, Geomorphological and Ecologic Dynamics

Andrea Rinaldo, Enrico Bertuzzo

This paper synthesizes recent works at the interface of hydrology, geomorphology, and ecology under an integrated framework of analysis with an aim for a general theory. It addresses a wide range of related topics, including biodiversity of freshwater fish ...

American Geophysical Union2009

Advanced Data Mining Method for Discovering Regions and Trajectories of Moving Objects: "Ciconia ciconia" Scenario

Stefano Spaccapietra, Claudio Magalhaes Carneiro

Trajectory data is of crucial importance for a vast range of applications involving analysis of moving objects behavior. Unfortunately, the extraction of relevant knowledge from trajectory data is hindered by the lack of semantics and the presence of error ...

Springer-Verlag2008

Part I: A novel in-vitro system for simultaneous mechanical stimulation and time-lapse microscopy in 3D

Jeffrey Alan Hubbell

To investigate the migration response of cells to changes in their biophysical environment, a novel uniaxial cell stimulation device (UCSD) has been designed and tested. The device is capable of applying very precise user-defined static or dynamic mechanic ...

Springer-Verlag2008

Part II: Fibroblasts preferentially migrate in the direction of principal strain

Matthias Lütolf, Jeffrey Alan Hubbell

A growing body of evidence suggests that the sensory information from the cytoskeleton and integrins may be responsible for guiding migration during mechano- and haptotaxis. However, the dual function of these subcellular structures as mechano-sensors and ...

Springer-Verlag2008