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megopie

@ megopie @lemmy.blahaj.zone

Posts
1
Comments
191
Joined
3 yr. ago

  • Framework Laptop 13 Pro and highlights from the Framework [Next Gen]

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  • I have 16 inch framework. I bought it fairly stripped down, only getting the parts I really needed for basic function as a laptop. I then bought additional parts as I had money for them and slotted them in. Made it a much more affordable purchase over all.

    And… then I spilled water on the keyboard. Shut it down, pulled it apart a little, dried next to a fan for a bit. Water hadn’t gotten past the keyboard luckily, but the keyboard was only partly functional. I just got a new keyboard module, put it in my self, good as new. No sending out the whole computer, no getting told by the rep that the whole machine was broken and I had to buy a new one.

    Payed for its self immediately that day as far as I’m concerned.

  • Linux breaks the 5% threshold for the Hardware survey first time ever on Steam

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  • there are some older games that rely on multi threading and even on a modern system this can cause some serious performance issues, again, this is getting solved though.

  • Linux breaks the 5% threshold for the Hardware survey first time ever on Steam

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  • So It does depend on the situation, there have been some issues with significantly reduced performance for heavily multi threaded games through wine/proton. It seems like that is getting cleared up by a direct implementation of the relevant stuff in the kernel, rather than being a distro specific thing. There are also some performance losses due to linux giving all application equal priority for “video random access memory” on a GPU (so if a game needs more than what is available it gets forced to use other memory which slows things down a lot) but there are some fixes coming down the line to make a system default to giving games higher priority for VRAM than the browser or desktop. In general stuff through a translation layer will always cause some lose in performance though.

    Realistically, on a super high end machine (multi thousand dollar GPU, nonsense amounts of ram, and absurd core count over clocked CPU) the bloat of windows doesn’t use up enough resources to impact performance, but on a lot of mid and low end machines Linux will outperform. The issues with translation layers are getting solved at an astonishing rate right now and… windows is just getting more bloated and buggy as Microsoft tries to push more subscription services and data harvesting.

  • AI warfare triggers Putin, as Kremlin moves to dismantle the last pieces of Russian internet: More and more restrictions are being imposed on the internet in Russia

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  • They take on issues that are problematic for the party’s image, if they’re not problematic for the party they let it thrive. Outside that narrow window, china’s internet is even more of a Skinner box, addiction suck, dystopian corporate hellscape than the English speaking internet.

  • AI warfare triggers Putin, as Kremlin moves to dismantle the last pieces of Russian internet: More and more restrictions are being imposed on the internet in Russia

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  • I assure you, the Chinese internet is not a picknick, it’s got plenty of its own wackos and weird shit going on. But the party is very quick to shut down stuff that it sees as a potential image problem, but they won’t do shit about a problem until it becomes a significant embracement.

  • dinosauria

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  • Technically, mammals did not evolve from reptiles, being synapsids, while reptiles are Sauropsids, having split basically immediately after the evolution of amniotes.

  • Engineer open-sources DIY radar system that's 95% cheaper than $250,000 commercial offerings, has 20 kilometer range — Moroccan engineer designs Aeris-10 radar, shares it on GitHub

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  • Probably not with SARH, multiple emitter sources would just complicate the job of the detector on the missile. Like I’m sure it could be made to work with a bit of compensation, but it would add cost and complexity to the seeker on the missile, which sort of defeats the point of such a system being cheap and easy to build. There’s also the Possibility that the returns would be too diffuse for a detector on the missile to track beyond that 20km range, so having additional sets beyond that range wouldn’t help. Probably easier and cheaper just increase the range of a single radar. Just putting the whole set on a really big missile and making it an active radar homing system might make sense with an array of sets providing warning and an initial vector, and the missile guiding it’s self in, but again, now your missile is the cost of at least one set per launch.

    Not sure what limits the range on this set, but they mention a wave guide improving it, which makes me think it’s just a power limitation on the emitter or limited sensitivity on the receiver.

  • Engineer open-sources DIY radar system that's 95% cheaper than $250,000 commercial offerings, has 20 kilometer range — Moroccan engineer designs Aeris-10 radar, shares it on GitHub

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  • It depends on the system, often times they’ll have additional guidance assistance, such as an infrared seeker or some inertial posturing system. SARH just means the main guidance is provided by a seeker picking up radar from a external emitter painting the target. As supposed to ARH (active radar homing) where the missile has its own emitter and detector. Most systems aren’t just one thing these days, for the sake of redundancy and error correction.

  • Engineer open-sources DIY radar system that's 95% cheaper than $250,000 commercial offerings, has 20 kilometer range — Moroccan engineer designs Aeris-10 radar, shares it on GitHub

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  • Nah, that missile was visual tracking. Not radar guided. Also, way too small to intercept anything going high and fast which is generally what the patriot is for. Intercepting an aircraft requires a really powerful motor to give it enough speed and altitude to catch a plane.

    This radar could maybe be used with a semi active radar guided missile, where the ground radar lights up the target and the missile just has a detector that homes in on that, which is what early patriots used. But it’s only got a 20km range which isn’t really enough for an anti aircraft system, unless all you’re worried about is something slow and low to the ground like a helicopter or cesna. Need enough time for the radar to detect, identify and lock the target, fire the missile, and have it track to the target, and something moving fast and high will be in and out of the range of the radar before all that can be done. Especially if the target is high up at 10km, which would half the effective range.

  • Pete Hegseth quotes fake Pulp Fiction Bible verse during Pentagon sermon

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  • I fucking bet he wrote the speech with a fucking LLM. That’s exactly the kind of mistake they make.

  • Trump supporters burn MAGA hats after president's AI Jesus post and pope attack

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  • I think that they were willing to go along with just about anything, so long as it seemed like he was a path to power. But, from their perspective, he’s committed the ultimate faux pa, he made gas prices go up. So his political agenda is dead in the water with no chance of recovery. This stuff is just the excuse to back away without loosing face.

  • ‘We lose the midterms’: Republicans worry Iran might have already cost them Congress

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  • The problem is that they wouldn’t see that as a failure due to not adopting a given agenda their base cares about, they’d see it as a loss due to people liking the republican agenda more, and they would then alter their agenda to be closer to the republicans.

  • Turbines are our friends

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  • molten salt systems can be fail safe by having the coolant drain from parts of the system that can’t operate with solidified salt in them, even if they do, you can sends someone with a heating element to remelt the system at critical points before turning it on. It’s not like water where the coolant will physically expand and burst things when it freezes, water’s actually pretty weird in that regard, most things take up less volume when they freeze.

    I don’t know why they couldn’t do the same for an alpha class, but I suspect it’s because running the reactor without coolant in it would have caused a melt down, and if any coolant was left inside it when turned off, the control rods would have been frozen in place preventing it from being restarted. Perhaps in such a tightly sealed system, the shrinkage caused by cooling could have caused things to break as well.

  • Turbines are our friends

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  • Various common steels with a bunch of insulation around it usually, sometimes with a thin coating. The potassium/sodium/calcium nitrate mixes that are used with concentrated solar systems operating in range between 200 C and 600 C. So like, yah you don’t want to touch it, but it’s not gonna do much to steel. It can be somewhat corrosive, but, this is fairly easily mitigated by design.

    Molten salt for heat transfer and thermal storage is a pretty mature technology that goes way back before we started using it in concentrated solar systems.

  • Trump Seethes as ‘Stupid Lawsuit’ Exposes Ballroom’s Underground ‘Military Complex’ Plans

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  • Or perhaps the contractors involved are giving him or his associates kickbacks from a construction scam, so, it doesn’t need to be finished ever for him to benefit.

  • Turbine go brrrr

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  • They’re actually quite similar to thermoelectric generators. But the potential difference between two semi conductors is created by a heat differential rather than by photon excitation.

    Thermoelectric generators have been used on various rovers and deep space probes as well as in remote lighthouses.

  • Turbine go brrrr

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  • You can use molten salt to move and store heat but you don’t put it through a turbine. Molten salt systems run it through a heat exchanger that heats steam or CO2.

  • Turbines are our friends

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  • I really like the concentrated solar systems that use molten salt, where rather than heating water directly, molten salt is heated and stored In large insulated tanks and tapped off to a heat exchanger to run the turbines, thus allowing power generation to match demand and continue at a constant rate even when light level very (such as at night).

    One interesting idea is to use a concentrated solar system to run an Einstein–Szilard refrigerator, or some other absorption refrigerator cycle.

  • Turbines are our friends

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  • Solar thermal has some distinct advantages when you start talking about really big instillations. Especially when considering power storage, molten salt systems can store heat and allow the generators to keep working even at night. Much cheaper than batteries at very large scales.

    Thermal solar systems are generally very efficient when the goal is heating something, not just generating power. So say, you want to run an ammonia plant without burning natural gas, or if you want to melt down metals for recycling. There are so many industrial applications where it’s a better way of doing it than using an electric heating element.