Spyke

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science

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New Scientist: The existence of a new kind of magnetism has been confirmed

Altermagnets are pretty interesting because their most defining feature is not the magnetic order in the materials. They look like ordinary antiferromagnets where the spins of adjacent atoms point in opposite direction and compensate each other, so no large magnetic fields are created. What differentiate altermagnets from antiferromagnets is how the electrons with different spin behave. When pulling current through altermagnets it will consist of purely spin up electrons along one crystal axis and purely spin down along orthogonal crystal axes. Thus the spin currents have a 'alternating' pattern, giving the name altermagnet. This is primarily exciting for the field of 'spintronics' which is all about creating technologies using spin currents.

Not all altermagnets are equally interesting, many antiferromagnets can be reclassified to altermagnets but they are generally insulating. (fun fact the first ever measured and textbook antiferromaget MnF2 is actually altermagnetic) So materials discovery of new altermagnets is important to find metallic, semi-metallic or even super conducting altermagnets.

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Nvidia Announces DLSS 5, and it adds... An AI slop filter over your game

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It is actually even worse, if you look at the lighting direction in the original granny picture, the seemingly only light source is the spark of the magic wand. To me this creates a sense of mystery, caution and tension, and it highlights that magic is the only tool to light the darkness.

Then in the sloppified version, they just blast the scene in lighting from the right for no reason. Their ai bot even subdues the light of the wand, making it look like a cheap prop. I also get the feeling that they change her gaze from looking at something to looking directly at the camera. So while the 2x5090 GPU slop might technically highlight more details, the entire artistic feeling just ends up with a grandma looking in a makeup mirror.

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USA asks Denmark for help in the egg crisis | Sweden Herald

From the Danish media: https://nyheder.tv2.dk/business/2025-03-14-usa-beder-danmark-om-hjaelp

There are a few additional points

  • Multiple European countries have gotten similar requests, not just Denmark

  • American egg policy requires washing the eggs while European policy prohibits this, making it highly inconvenient.

  • They would want assurance that America won't suddenly put tariffs on the eggs.

  • If america were to pay upwards of 1€ per egg, maybe they'd have a deal.

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The Future of Machine Learning: A New Breakthrough Technique (MLC)

While in not in the field either, I do know that it is quite unusual in computer science academics to publish in actual peer reviewed journals. This is because it can be a long process, and the field is very fast moving, so your results would be outdated by the time you publish. Thus, a paper is typically synonymous with a conference proceeding, and can be found on arxiv. I found this Paper on the arxiv from 2017/2018 which seems to be when this paper was originally published for the scientific community and presented at a very "good" (if I had to guess) conference. Google scholar says this paper has 650 citations, so it probably has had quite some impact. However, I would guess this method is well known and is already implemented in many models, if it was truly disruptive.

nyheder

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Nyt karakterkrav til gymnasiet vil ramme tusindvis af unge

Jeg har altid syntes at det overordnede karaktergennemsnit er et alt for rigidt et adgangskriterie. Det er jo et gennemsnit af gennemsnit der ikke siger meget om ens kompetencer. I stedet for kunne man kun tage udgangspunkt i de afsluttende karakterer som var relavant for den enkelte uddannelse. Ellers ender du med unge der ikke kommer på et teknisk gymnasie på grund af deres tysk og religion karakterer, og unge der ikke kommer ind på en sproglig almen gymnasie linje på grund af deres matematik og fysik og kemi karakterer.

science

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New Scientist: The existence of a new kind of magnetism has been confirmed

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Imagine there are two balls, a red and a blue. You want to communicate to your friend rolling the only blue ball to them. In a ferromagnet there are only blue balls, in an antiferromagnet the blue and red balls are glued together and in an altermagnet there are both balls but they go in different directions so you just need to orient yourself correctly.

The antiferromagnet can't be used for spintronics, the ferromagnet can but big magnetic field disturb other parts in a circuit.

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A normal person is merely someone who has not been diagnosed properly.

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Without knowing much about psychology, I would imagine separating the mindset into a set of orthogonal axis is pretty difficult and certainly the normal range would probably not follow a normal distribution in each axis. As a result the N-dimensional volume would not be a N-sphere but some complex topological shape. Possibly even consisting of multiple disjointed sets. If any of these assumptions are true then the global point average over the entire space may lie outside many of the "normal" ranges.

science

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New quantum breakthrough could transform teleportation and computing

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For using the quantum teleportation algorithm you first have two establish entangled qubit pair, with one photon at the sender and one at the destination. This process does take the distance over speed of light amount of time. The trick is that you would pre-process this, and decide later when to and what information to encode into the qubit, allowing for "instant" information transfer. Naturally, this requires that you have a very good memory device that keeps the fidelity of the entangled qubits.

nyheder

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Japan har næsten 100.000 borgere over 100 år. Opskriften er sund kost, motion og ... mening

Nu er det ikke fordi jeg har lyst til at skyde ned på positive nyheder, da vi ikke har nok af det i forvejen. Men for at have et lidt mere nuanceret billede, så er det godt at vide at der også er studier der tyder på at disse "super centenarians" er korreleret med fattigdom og kort gennemsnitlig levealder, og det store antal af ældre muligvis skyldes alders- og pensions bedrag. https://www.biorxiv.org/content/10.1101/704080v3.full

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Chippen over dem alle

Jeg vil gætte på artiklen handler om Peder Lodahls seneste Science artikel. Det ser ud til det er en programmerbar chip til kvante computere baseret på fotonik elementer. Jeg er ikke ekspert i fotonik, men det virker til at værker en strategi sammenlignelig med superledende kvante computere som køre ved kryostatiske temperature, og kræver god opskaleringen (de siger teknologien er moduler, så vi kan håbe) da qubitsne skal fejl korrigeres.