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| 1 | Fostering Children’s Participation in Disaster Risk Reduction Through Play:A Case Study of LEGO and Minecraft显示文摘This article focuses on children’s participation in disaster risk reduction.It draws on a 2018 study done in New Zealand with 33 school children who conducted participatory mapping with LEGO and the video game Minecraft to assess disaster risk in their locality and identify ways to be more prepared.The research involved participatory activities with the children actively involved in the co-design,implementation,and evaluation of the initiative.A focus group discussion was also conducted to assess the project from the viewpoint of the schoolteachers.The results indicate that LEGO and Minecraft are playful tools for children to participate in disaster risk reduction.The research identifies four key elements of genuine children’s participation,including the Participants,Play,the Process,and Power(4 Ps).This framework emphasizes that fostering children’s participation in disaster risk reduction requires focusing on the process through which children gain power to influence decisions that matter to them.The process,through play,is child-centered and fosters ownership.The article concludes that Play is essential to ground participation within children’s worldviews and their networks of friends and relatives. | Loïc Le Dé JC Gaillard Anthony Gampell Nickola Loodin Graham Hinchliffe | 2021 | International Journal of Disaster Risk Science2021，12，6： | 0 |
| 2 | Laser sources for microwave to millimeter-wave applications [Invited]显示文摘We present several laser sources dedicated to advanced microwave photonic applications.A quantum-dash mode-locked laser delivering a high-power,ultra-stable pulse train is first described.We measure a linewidth below 300 kHz at a 4.3 GHz repetition rate for an output power above 300 mW and a pulse duration of 1.1 ps after compression,making this source ideal for microwave signal sampling applications.A widely tunable(5–110 GHz),monolithic millimeter-wave transceiver based on the integration of two semiconductor distributed feedback lasers,four amplifiers,and two high-speed uni-traveling carrier photodiodes is then presented,together with its application to the wireless transmission of data at 200 Mb∕s.A frequency-agile laser source dedicated to microwave signal processing is then described.It delivers arbitrary frequency sweeps over 20 GHz with high precision and high speed(above 400 GHz∕ms).Finally,we report on a low-noise(below 1 kHz linewidth),solid-state,dual-frequency laser source.It allows independent tuning of the two frequencies in the perspective of the implementation of a tunable optoelectronic oscillator based on a high-Q optical resonator. | Gaël Kervella Jeremy Maxin Mickael Faugeron Perrine Berger Hadrien Lanctuit Gregoire Pillet Loïc Morvan Frédéric van Dijk Daniel Dolfi | 2014 | Photonics Research2014，2，4： | 0 |
| 3 | Microfluidic actuators based on temperature-responsive hydrogels显示文摘The concept of using stimuli-responsive hydrogels to actuate fluids in microfluidic devices is particularly attractive,but limitations,in terms of spatial resolution,speed,reliability and integration,have hindered its development during the past two decades.By patterning and grafting poly(N-isopropylacrylamide)PNIPAM hydrogel films on plane substrates with a 2μm horizontal resolution and closing the system afterward,we have succeeded in unblocking bottlenecks that thermo-sensitive hydrogel technology has been challenged with until now.In this paper,we demonstrate,for the first time with this technology,devices with up to 7800 actuated micro-cages that sequester and release solutes,along with valves actuated individually with closing and opening switching times of 0.6±0.1 and 0.25±0.15 s,respectively.Two applications of this technology are illustrated in the domain of single cell handling and the nuclear acid amplification test(NAAT)for the Human Synaptojanin 1 gene,which is suspected to be involved in several neurodegenerative diseases such as Parkinson’s disease.The performance of the temperature-responsive hydrogels we demonstrate here suggests that in association with their moderate costs,hydrogels may represent an alternative to the actuation or handling techniques currently used in microfluidics,that are,pressure actuated polydimethylsiloxane(PDMS)valves and droplets. | Loïc D'Eramo Benjamin Chollet Marie Leman Ekkachai Martwong Mengxing Li Hubert Geisler Jules Dupire Margaux Kerdraon Clémence Vergne Fabrice Monti Yvette Tran Patrick Tabeling | 2018 | Microsystems & Nanoengineering2018，4，1： | 3 |
| 4 | ENABLING CROP DIVERSIFICATION TO SUPPORT TRANSITIONS TOWARD MORE SUSTAINABLE EUROPEAN AGRIFOOD SYSTEMS显示文摘European cropping systems are often characterized by short rotations or even monocropping,leading to environmental issues such as soil degradation,water eutrophication,and air pollution including greenhouse gas emissions,that contribute to climate change and biodiversity loss.The use of diversification practices(i.e.,intercropping,multiple cropping including cover cropping and rotation extension),may help enhance agrobiodiversity and deliver ecosystem services while developing new value chains.Despite its benefits,crop diversification is hindered by various technical,organizational,and institutional barriers along value chains(input industries,farms,trading and processing industries,retailers,and consumers)and within sociotechnical systems(policy,research,education,regulation and advisory).Six EU-funded research projects have joined forces to boost crop diversification by creating the European Crop Diversification Cluster(CDC).This Cluster aggregates research,innovation,commercial and citizen-focused partnerships to identify and remove barriers across the agrifood system and thus enables the uptake of diversification measures by all European value-chain stakeholders.The CDC will produce a typology of barriers,develop tools to accompany actors in their transition,harmonize the use of multicriteria assessment indicators,prepare policy recommendations and pave the way for a long-term network on crop diversification. | Antoine MESSEAN Loïc VIGUIER Lise PARESYS Jean-Noel AUBERTOT Stefano CANALI Pietro IANNETTA Eric JUSTES Alison KARLEY Beatrix KEILLOR Laura KEMPER Frédéric MUEL Barbara PANCINO Didier STILMANT Christine WATSON Helga WILLER Raul ZORNOZA | 2021 | Frontiers of Agricultural Science and Engineering2021，8，3： | 0 |
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