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Gli ultimi otto messaggi ricevuti dalla Federazione
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  • What did you want to be when you grew up?

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  • Wind Power Is Taking Off In China– All The Way to 2000 m AGL

    2000 m above ground level (AGL), winds are stronger and much, much more consistent than they are at surface. Even if the Earth were a perfect sphere, there’d be a sluggish boundry layer at the surface, but since it’s got all these interesting bumps and bits and bobs, it’s not just sluggish but horribly turbulent, too. Getting above that, as much as possible, is why wind turbines are on big towers. Rather than build really big tower, Beijing Lanyi Yunchuan Energy Technology Co. has gone for a more ambitious approach: an aerostat to take power from the steady winds found at high altitude. Ambitiously called the Stratosphere Airborne Wind Energy System (SAWES), the megawatt-scale prototype has recently begun feeding into the grid in Yibin, Sichuan Province.

    The name might be a bit ambitious, since its 2000 m test flight is only one tenth of the way to the stratosphere, but Yibin isn’t a bad choice for testing: as it is well inland, the S2000 prototype won’t have to contend with typhoons or other ocean storms. The prototype is arguably as ambitious as the name: its 12 flying turbines have a peak capacity of three megawatts. True, there are larger turbines in wind farms right now, but at 60 m in length and 40 m in diameter, the S2000 has a lot of room to grow before hitting any kind of limit or even record for aerostats. We’re particularly interested in the double-hull construction– it would seem the ring of the outer gas bag would do a good job funneling and accelerating air into those turbines, but we’d love to see some wind tunnel testing or even CFD renderings of what’s going on in there.
    A rear view shows the 12 turbines inside the double hull. It should guide air into the gap, but we wonder how much turbulence the trusses in there are making.
    During its first test flight in January 2026, the system generated generated 385 kilowatt-hours of electricity over the course of 30 minutes. That means it averaged about 25% capacity for the test, which is a good safe start. Doubtless the engineers have a full suite of test flights planned to demonstrate the endurance and power production capabilities of this prototype. Longer flights at higher capacity may have already happened by the time you read this.

    Flying wind turbines isn’t a new idea by any means; a few years ago we featured this homemade kite generator, and the pros have been in on it too. Using helium instead represents an interesting design choice–on the plus side, its probably easier to control, and obviously allowing large structures, but the downside is the added cost of the gas. It will be interesting to see how it develops.

    We’re willing to bet it catches on faster than harvesting wind energy from trees.

    All images from Beijing Lanyi Yunchuan Energy Technology Co., Ltd.

    hackaday.com/2026/02/26/wind-p…

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  • I nuovi schiavi dell’algoritmo
    @anarchia
    di Mario Sommella (*). Abbiamo rubato le immagini (addirittura 8) al grande Mauro Biani. Caporalato digitale, sfruttamento sistemico e complicità delle multinazionali L’immagine che non vogliamo vedere Sono le sette del mattino. In una città italiana qualunque, un uomo di...

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  • Large Hadron Collider, he typed carefully

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  • @reiver no, it's just a regular acct:

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  • “le atlete italiane vincono, ma non contano”. il medagliere olimpico visto in prospettiva di genere, tra pinkwashing e gender gap
    @anarchia
    Le atlete italiane si sono distinte in molte discipline in questa edizione delle Olimpiadi invernali, regalando al Paese la maggior parte delle medaglie e offrendo uno spaccato

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    The beauty of #ActivityPubYes, Loops federates, and admins can enable any remote instance video posts to appear in local follower feeds AND you can even include them in the For You page ✨https://joinloops.org/join-the-beta#Loops #Fediverse #interoperability
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    5 Fediverse sites have been hacked due to running outdated software.Please take a moment to ensure that your instance of Mastodon, Misskey, PeerTube, PixelFed, or any other Fediverse platform is fully up-to-date.It may also be wise to log into your server and update your operating system.Debian / Ubuntu servers:sudo apt updatesudo apt dist-upgradesudo rebootFedora / CentOS / Red Hat / Alma Linux:sudo dnf update --refreshsudo dnf upgradesudo rebootIf you update your OS, your server will be briefly offline during the reboot. If you have not configured your web services — including your Fediverse service — to start automatically on boot, you may need to start them manually afterward.Always make a backup before performing upgrades.If any of this is confusing or feels overwhelming, you should reconsider whether you want to be a server administrator. This is not meant as an insult. It’s great that you wanted to contribute to the Fediverse, but you may be better off participating as a user rather than an admin. People depend on you to keep services running smoothly, and that requires knowing how to maintain your system safely and correctly.#Fediverse #ActivityPub #Mastodon #Misskey #PixelFed #PeerTube #Sharkey #Loops #Akkoma #Pleroma #Mbin #Lemmy #InfoSec #Security #Hack #Foss #OpenSource #Linux
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    #datocurioso ¿Creías que el #fediverso se limitaba solo al microblogging de #Mastodon? ¡Piénsatelo de nuevo!El fediverso es un cosmos interconectado regido por el protocolo #ActivityPub, y alberga un sinfín de mundos más allá de las publicaciones cortas. Puedes encontrar alternativas descentralizadas para casi cualquier servicio centralizado que conozcas: ¿Buscas compartir imágenes al estilo Instagram? Existe #Pixelfed.¿Anhelas un espacio para vídeos como YouTube? Tienes a tu disposición #PeerTube, que usa tecnología P2P para aligerar la carga.¿ quieres compartir videos cortos al estilo tik Tok? Prueba #loops!¿Prefieres los agregadores de enlaces al estilo Reddit? #Lemmy es tu destino. ¿ buscas compartir tu #podcast? #funkwhale es a donde debes ir.¿ te gusta escribir o quieres hacer un blog? Intenta con #WriteAs¡Y eso solo es la punta del iceberg!El fediverso no es un solo lugar, sino una constelación de plataformas que interactúan entre sí, una red de redes libres, abiertas y federadas, permitiendo a un usuario de Mastodon o de algún otro servicio federado seguir e interactuar con alguien en PeerTube o Pixelfed, etc. ¡La verdadera magia radica en la interoperabilidad y la libertad de elección! #SoftwareLibre #Tecnologia #Privacidad ✨‍♂️🎙️
  • Can't wait to do this with #Loops 😂

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    @_anon I just checked and I'm still logged in.. it seems fine?