Results 91 to 100 of about 1,666 (217)

Quantifying temporal dynamics of greenhouse gas emissions in lake mesocosms: Deployment of a low‐cost measurement system

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Greenhouse gas (GHG) emissions from freshwater ecosystems contribute significantly to global carbon budgets, yet they remain poorly constrained due to limited high‐frequency measurements. We tested a low‐cost, high‐frequency GHG measurement system in a long‐term mesocosm experiment in Lemming, Denmark, over a 7‐month period, focusing on CO2 ...
Tuba Bucak   +6 more
wiley   +1 more source

Octave‐Spanning, Deterministic Single Soliton Generation in 4H‐Silicon Carbide‐On‐Insulator Microring Resonators

open access: yesLaser &Photonics Reviews, EarlyView.
The miniaturization of metrology and precision spectroscopy systems requires robust, turn‐key microcombs with broad bandwidth, low threshold, and high efficiency. Here, high‐Q, dispersion‐engineered microresonators in a high‐confinement nonlinear SiC platform, combined with waveguide‐enabled thermal management and laser cooling, enable deterministic ...
Yi Zheng   +7 more
wiley   +1 more source

Mesurer la pauvreté pour l’éliminer

open access: yesField Actions Science Reports, 2012
En 2000, l’ONU a établi des Objectifs du millénaire pour le développement, visant notamment à réduire de moitié l’extrême pauvreté d’ici 2015. En 2000, l’Union européenne a lancé sa stratégie dite de Lisbonne, contenant une invitation à « donner un élan ...
Julien Damon
doaj  

Integrated Photonic Modulator Circuit With Programmable Intensity and Phase Modulation Response

open access: yesLaser &Photonics Reviews, EarlyView.
A platform‐agnostic programmable modulation circuit is introduced to enable tunable and universal optimization of integrated photonic modulators. By flexibly controlling carrier amplitude and phase, the approach adapts to diverse device characteristics without structural redesign.
Hong Deng   +3 more
wiley   +1 more source

CONSIDERAŢII GENERALE PRIVIND SISTEMELE DE FUNCŢIE PUBLICĂ DIN UNIUNEA EUROPEANĂ

open access: yesEIRP Proceedings, 2007
Dans le pays de l`Union Européenne, on distingue traditionnellement deux modèles de fonctionpublique: celui de carrière et celui d`emploi. Le systéme de carrière se caractérise par la division de la fonctionpublique en niveaux, degrés et corps.
Iulian Savenco
doaj  

Extending the hyper‐logistic model to the random setting: New theoretical results with real‐world applications

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
We develop a full randomization of the classical hyper‐logistic growth model by obtaining closed‐form expressions for relevant quantities of interest, such as the first probability density function of its solution, the time until a given fixed population is reached, and the population at the inflection point.
Juan Carlos Cortés   +2 more
wiley   +1 more source

Uncertainty, Sensitivity, and Efficiency Analysis of a Hybrid Piezoelectric–Electromagnetic Energy Harvester

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Digitalization and emerging technologies are increasing the demand for wireless sensing and the Internet of Things (IoT), which provide opportunities for autonomous sources of electricity in the form of energy harvesting systems. This paper focuses on the challenges in hybrid piezoelectric‐electromagnetic kinetic energy harvesting systems that
Petr Sosna, Damian Gaska, Zdeněk Hadaš
wiley   +1 more source

Références bibliographiques du dossier « Les grands débats éducatifs – Europe »

open access: yesRevue Internationale d’Éducation de Sèvres, 2000
Marie-France Pamart
doaj   +1 more source

Européens, cultivons notre géographie !

open access: yesEspacesTemps.net, 2003
Après d'autres, Valéry Giscard d'Estaing a récemment invoqué la « géographie » pour rejeter la demande d'adhésion à l'Union européenne de la Turquie ( Le Monde , 9 novembre 2002).
Jacques Lévy
doaj  

Enabling effective urban green space stewardship through planning: A qualitative comparative analysis in Southwest England

open access: yesPeople and Nature, EarlyView.
Abstract Amid increasing urbanisation and biodiversity decline, ‘effective stewardship’ of urban green space (UGS) is a complex but critical nature‐based solution for long‐term environmental, social and economic gain. Combining stewardship and sense‐of‐place frameworks with European nature‐based solutions guidance, we investigate which social and ...
Fay Kahane   +2 more
wiley   +1 more source

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