Results 61 to 70 of about 3,962,691 (257)

Méthodes d’étude de la structure spatiale des fluctuations de la natalité au Québec (1926-1971) [PDF]

open access: yes, 1975
La présente recherche montre, à travers trois approches, les démarches méthodologiques possibles visant à dégager la structure spatiale des diverses tendances de la natalité à l'intérieur des divisions de recensement (comtés) du Québec.
Bisson, Michel
core   +1 more source

Real Heights of SuperDARN F Region Echoes Inferred From Electron Density Measurements by the Rankin Inlet and RISR‐C Radars

open access: yesRadio Science, Volume 61, Issue 2, February 2026.
Abstract This study is one of the first attempts to estimate statistically the real height of SuperDARN F region echoes in the polar cap. To achieve this, measurements of the electron density in the scattering volume of the Rankin Inlet SuperDARN radar are compared with the electron density profiles measured by the incoherent scatter radar RISR‐C ...
Alexander V. Koustov   +3 more
wiley   +1 more source

Riding the monsoon: Geography and Iron Age trade in the Indian Ocean

open access: yesThe Economic History Review, Volume 79, Issue 1, Page 312-341, February 2026.
Abstract This paper exploits ancient textual sources to develop a database of ancient trade in the Indian Ocean and model trade in the region during the Iron Age. Wind‐speed data are used to construct a gravity model of trade and are combined with detailed textual data from the Periplus of the Erythraean Sea to analyse historical development trends in ...
Conrad Copeland
wiley   +1 more source

Evaluation économique des politiques de transport et indicateurs d’accessibilité spatiale : l'apport des SIG

open access: yes, 2008
Le present article s’attache a demontrer l’apport des SIG dans l’evaluation economique des politiques de transport. Nous montrons tout d’abord que la variation de surplus collectif, a la base de l’evaluation economique, peut etre mesuree au travers de l ...
C. Raux, A. Mercier, N. Ovtracht
semanticscholar   +1 more source

Dialectometric analysis of language variation in Twitter

open access: yes, 2017
In the last few years, microblogging platforms such as Twitter have given rise to a deluge of textual data that can be used for the analysis of informal communication between millions of individuals.
Donoso, Gonzalo, Sanchez, David
core   +1 more source

Estimating Soil Electrical Parameters in the Canadian High Arctic From Impedance Measurements of the MIST Antenna Above the Surface

open access: yesGeophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract The MIST experiment aims to detect the cosmological 21‐cm signal through sky observations at 25–125 MHz using a wide‐beam antenna. The antenna is mounted above the soil and the beam characteristics are highly dependent on the soil's electrical properties.
I. Hendricksen   +15 more
wiley   +1 more source

Rendements croissants et structure spatiale des salaires en France [PDF]

open access: yes, 1994
La nouvelle économie géographique présente les « rendements croissants d’agglomération » comme une variable explicative privilégiée de la concentration spatiale de l’activité économique.
Barde, Sylvain
core   +1 more source

Plasma Conditions Govern the Reversible Transition Between STEVE and Picket Fence Emissions

open access: yesGeophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract On 6 May 2018, a remarkable subauroral optical event exhibiting three phases of evolution (Strong Thermal Emission Velocity Enhancement [STEVE] → Picket Fence → STEVE) and co‐occurrence with a stable auroral red arc was observed over Alberta, Canada.
Jinghan Wang   +3 more
wiley   +1 more source

Chroniques de la société japonaise : « Théâtre dansé » de Toshiki Okada

open access: yesCritical Stages, 2011
Toshiki Okada, auteur et metteur en scène des plus marquants dans la nouvelle dramaturgie japonaise, inventeur d’une écriture et d’un langage scénique très physique, « dansé », revendique dans son théâtre la notion du réalisme et du quotidien.
Irène Sadowska Guillon
doaj  

Spatial Variations in Vitreous Oxygen Consumption

open access: yesPLOS ONE, 2016
We investigated the spatial variation of vitreous oxygen consumption in enucleated porcine eyes. A custom made oxygen source was fabricated that could be localized to either the mid or posterior vitreous cavity and steady state vitreous oxygen tension was measured as a function of distance from the source using a commercially available probe.
Murali, Karthik   +7 more
openaire   +5 more sources

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