Alts (mostly for modding)

@sga013@lemmy.world

(Earlier also had @sga@lemmy.world for a year before I switched to lemmings)

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Joined 4 months ago
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Cake day: January 16th, 2025

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  • the current problem with journals is that there is no money in it for authors. journals oly exist because of historical reasons, and older folks still value them.

    Arxiv exists as a semi journal, which is some what cc4 (or some other cc of your choice) and that is great, but still one source.

    You can just host your research papers as websites, as in just a web article, and use some vcs like github, codeberg, or self hosted forego system. That is arguably the best case.

    I have a paper which is on arxiv, and my supervisor has been “polishing” it for a journal, but to me that is a useless process, because i almost never care about things like journal impact factor or h index. to me, the only thing valide is steps for reproducibility, that is, give me a recipe, and if i can recreate, then you did a great job. This could mean, for example, releasing all your raw unprocessed data.

    how to handle reputation for who can review, but I think there are ways to do that and that’s beyond the scope of this post as I imagine it could get pretty complicated and would require feedback from people actually in the industry. The reviewers can submit comments and reviews back to the author via federation, but this time the process can be open instead of behind closed doors.

    one of the reasons reviewers are effective is that the remain anonymous, that is why they can shit talk a lot. You would not have the slander, if you make the identity real.

    I think we should not have reputation or verification, as i stated above, if you post on your own website, and not have gatekeeping. Yes a lot of the work may not meet “some standards”. but even with current system, a lot of work is published which is substandard. if we can release work in open, and colaborate as we do for open source software, thart would be the ideal thing for me. Each issue could be a literal git issue, each correction can be a pull request, and so on. Fully transparent, and somewhat resistant to whole network failing. (assuming you have local copies, you can just spin another instance, and your paper still stays onloine)



  • sga@lemmings.worldtoScience Memes@mander.xyzDamn
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    20 days ago

    in simplification, you could derive that curvature of the orbit is basically the force between objects, with radius, from the centre of mass. Once you know curvature at a point, you ca define a series of curves fitting, and substitute with other postions to find all constants. And what is curvature? you can find online, that curvature is just a function of second order derivative, and you just have to solve a second degree differential equation.




  • In our home we have “coolers” (the big kind with metal bodies and large water storage, and padded, perforforated walls). It is outside our house and blowing air inwards. We try our best to seal the area around window with lots of cardboard, fibre sheet and thermocol, and then depending on time of day, confining the space (by closing other doors in home). It is not AC cool, nor is it really effictive when it is hot (50+ C) outside, but other time it works fine. In the nights it does a pretty good job (good enough that i have caught a cold right now). When we do not want the noise, we just run the water pump, so occasional winds from outside come and are cooled by the running water. Water usage is slightly high (we usually require one filling a day, which would be 40-50 litre water i guess), but we sometimes keep cycling between pump on and off to conserve some more water. If noise is a big concern to you, you can try to basically cover whole of the front (with some sound insulating material, like fibre sheets(the polymer ones often found in packaging)) and then make some side channels for air. Or something more simple is using lighter curtains just in front of cooler. This will break the flow of air, but if you have sealed rest of the are, so air can’t leak elsewhere, then you would get air breaking its flow and flow around the obstacles and reach you, but not as loud. We do something similar, we have not covered fully, we have left partially open (60 % i guess from the middle) but to cover noise, we partially close it by window (which is kept in place by curtain over it) so we get a tighter channel of air (as it bends around the edge of window). If you stay in the channel, you get large air flow, but more noise, but if you move away from it (from my casse, even by a foot) then the noise is cut in half. The rest of the room is now cooled by this air current mixing with rest of room air. If room is large, t=you may also have to turn your ceiling fan on for this, but we do not have to.

    In really peak summers (and peak hours of the day), we use ac for few hours (1-1.5 or 2) and when it gets cooler outside, fall back to cooler.









  • https://youtu.be/t-O-Qdh7VvQ

    No, It is actually the light produced that we can actually use as a energy source, the limiting thing is, before completely loosing its kinetic energy to frictional heat, stuff falls into black hole, from where we can not get anymore energy back. If black hole is stationary, then its 6%, and if its spinning (and assuming the fastest spinning theoretically possible) - 42% (spinning black holes are smaller and have smaller radius of no-return