A_A

joined 2 years ago
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[–] A_A@lemmy.world 1 points 4 days ago
[–] A_A@lemmy.world 2 points 4 days ago (1 children)

This scenario but we add a third object that will pass inside the Earth's orbit between the Earth and the small object and very fast to escape Earth's gravity and move away, so to momentarily exert a large gravitational force and to locally cancel (and more) Earth's gravitational pull to slow down the small object to about zero near ground level.
Tidal effects will be catastrophic so please don't do this to your home planet unless you really, really want to.

[–] A_A@lemmy.world 1 points 5 days ago* (last edited 5 days ago)

translation from the original :
https://mp.weixin.qq.com/s/aYZXOxxT8d5nwfye-oiZmA
Guoxing Aerospace launched 12 satellites in one rocket! The Space Computing Constellation 021 mission was a complete success!
On 2025 May 14, at 12:12 Beijing time, Guoxing Aerospace successfully launched 12 satellites for the Space Computing Constellation 021 mission using the Long March 2D carrier rocket at the Jiuquan Satellite Launch Center. The satellites entered their predetermined orbit, marking the successful launch of the world's first space computing constellation.

The successful completion of the initial constellation launch mission will usher in a new era of "space computing" globally.

From 0 to 1, the world's first space computing constellation was successfully launched.

The Space Computing Constellation 021 mission is the first launch of Guoxing Aerospace's "XingSuan" plan and also the first launch of the Zhejiang Laboratory's "Three-Body Computing Constellation". This initial constellation is a joint construction of Guoxing Aerospace, Zhejiang Laboratory, and Neijiang High-Tech Zone, and consists of 12 computing satellites developed by Guoxing Aerospace, including:

  • Neijiang (XingShiDai-27)
  • Neijiang High-Tech (XingShiDai-28)
  • Taizhou (XingShiDai-29)
  • Haikou (XingShiDai-30)
  • Ma'anshan ZhiSuan 1 (XingShiDai-31)
  • Chongzhou (XingShiDai-32)
  • TianTie Technology (XingShiDai-33)
  • Miyanyuwuchangyuan (XingShiDai-34)
  • YuKongZhe (XingShiDai-35)
  • "DaLingHaoBay" Star (XingShiDai-36)
  • Zhejiang 1 (XingShiDai-37)
  • Zhejiang 2 (XingShiDai-38)

Guoxing Aerospace's "XingSuan" plan has launched its first constellation of 12 satellites in one orbit.

The mission code "021" refers to the transition from 0 to 1, symbolizing the breakthrough of achieving the world's first space computing constellation.

"Artificial intelligence should not be absent from space due to a lack of computing power," said Wang Jian, academician of the Chinese Academy of Engineering and director of Zhejiang Laboratory. The construction of the space computing constellation will enable a single satellite to play a greater value, which has far-reaching significance for the transformation of the aerospace industry.

( ... the article is much longer and they have many photographs and a short video of the rocket launching the satellites

... if you want to continue translating it, go on ... i made my small contribution ! )

[–] A_A@lemmy.world 2 points 1 week ago* (last edited 1 week ago)

... Recently we found evidence that spacetime curvature alone without the need for an event horizon leads to black hole evaporation (... this is pair generation !). ...

Great ! Now tell me : what's the implications of this on cosmological spacetime curvature ?

the quote is from :
original article:
https://arxiv.org/abs/2410.14734
An upper limit to the lifetime of stellar remnants from gravitational pair production

[–] A_A@lemmy.world 21 points 1 week ago

Original free access article :
https://iopscience.iop.org/article/10.1088/1361-6633/adc82e
Gravity generated by four one-dimensional unitary gauge symmetries and the Standard Model


if i get even 0.01% of what this is, then, they really reached a "Theory of Everything" but it can't be experimentally tested until quantum gravity things are detected.

[–] A_A@lemmy.world 0 points 1 week ago (1 children)

you and i can now see that putting transistors in machines give them more functionalities. The same way i bet that, in the future, robots using artificial neurons, in ways we can't describe yet, will exhibit potential you and i "fail" 😋 to see now

[–] A_A@lemmy.world 5 points 1 week ago

American Media under threat from dictator can't write an honest headline. Read this new from free press here :

https://lemmy.world/post/29539988
Trump might claim China tariff victory – but this is Capitulation Day

[–] A_A@lemmy.world 0 points 1 week ago (3 children)

Failure to see it is common amongst us limited humans.

[–] A_A@lemmy.world 11 points 1 week ago

Not for everyday m$off user

... The Canary channel is where Microsoft tries out its latest builds of Windows, and there's no guarantee that anything in the Windows Insider program will ever see the light of day. ...

[–] A_A@lemmy.world 9 points 1 week ago (1 children)

Perfect guess ! (afaik) ρ(concrete) ≈ 2.5 tons/m³
so full sphere ≈ (2.5 x 382) tons = 955 tons
they have 400 t so the cavity removes :
955 - 400 = 555 t ... so 7.51m diam. cavity
... so, yes 3/4m thick wall 😌👍 !

[–] A_A@lemmy.world 3 points 1 week ago

indeed i made a very simplified calculation not taking into account increase density of salted water nor increased density because of compressibility of water at 500 m deep. Basically i took 1m³(water) is 1 (metric) ton.

[–] A_A@lemmy.world 8 points 1 week ago (1 children)

... a sphere nine metres in diameter and weighing 400 tonnes will be submerged off the coast of California at a depth of 500 to 600 metres. It will have a storage capacity of 0.4 megawatt hours (400 kWh) ...

i will try a rough calculations : suppose we can have concrete at $100 per ton, then it's a minimum investment of $40,000. Also suppose electricity is stored with a large added value of 10 cents per kilowatt hour, so, for every cycle a rough gain of $40. By these numbers, 1,000 cycles would pay for the concrete ... so, it may look good considering they plan a life of about 50 years for such devices.
On the other hand if competitive battery storage cost only one cents per kilowatt hour (temporary in and out storage) and if concrete and fabrication goes up 10 times to $1,000 per ton then it is not economically viable anymore.

A good calculation of profitability would need to take into account the less than 100% energy efficiency of batteries cycling and of hydraulic energy cycling, ... and so many more parameters which have to be studied.

 

cross-posted from: https://lemmy.world/post/26978000

What is "Toastify is awesome”?
https://lemmy.world/post/17198003/10978272


... to fix the problem i simply logged out and logged in again

0
submitted 2 months ago* (last edited 2 months ago) by A_A@lemmy.world to c/anything@lemmy.world
 

What is "Toastify is awesome”?
https://lemmy.world/post/17198003/10978272


... to fix the problem i simply logged out and logged in again

 

nortvolt ... depends on Chinese suppliers for cathode active material

 

Publié le 5 mars 2025
https://youtu.be/CZmPMA8pyGA
j'en ai transcrit quelques mots ici :

"(...) La menace revient à l'est ... ... Notre génération ne touchera plus les dividendes de la paix : il ne tient qu'à nous que nous enfants récoltent demain les dividendes de nos engagements. Alors nous ferons face.

 

... par exemple, les positions récentes de Macron ou de Bayrou sur des sujets d'actualités internationales
... et présentées sur un site officiel gouvernemental ?

 

ContactKeys

PlayStore Review :
This app installed without my permission. There is barely any info about what this app is for. I have all my settings turned off so it asks my permission before downloading anything, and this app still manage to get installed without consent. This is a very shady thing to do. This and another 2 apps also from google (e.g. SafetyCore) that just installed without permission. If my settings mean nothing, this is very worrying. No heads up, nothing.

135 people found this review helpful
.
Released on : 2025 Jan 28
Downloads : 1,000,000,000+
... is it a tool for Google to replace or control encryption keys used in applications ?


Google’s ‘Secret’ Update Scans All Your Photos
https://www.forbes.com/sites/zakdoffman/2025/02/26/google-starts-scanning-your-photos-without-any-warning/
from post :
https://lemmy.world/comment/15360201

also in the Forbes article :
Per one tech forum (
https://gbatemp.net/threads/psa-to-all-android-users-google-quietly-installs-spyware-on-android-devices.667542/

GBAtemp.net - The Independent Video Game Community
)
this week: “Google has quietly installed an app on all Android devices called ‘Android System SafetyCore’. It claims to be a ‘security’ application, but whilst running in the background, it collects call logs, contacts, location, your microphone, and much more making this application ‘spyware’ and a HUGE privacy concern. It is strongly advised to uninstall this program if you can.

... →
Remove the following 2 spywares :
1).
Android System SafetyCore : https://play.google.com/store/apps/details?id=com.google.android.safetycore
2).
Android System Key Verifier : https://play.google.com/store/apps/details?id=com.google.android.contactkeys


Prevent installation of 1) SafetyCore :

@Smc87@lemmy.sdf.org
https://lemmy.world/comment/15345614
:

outdated v2.0 :
.
https://github.com/daboynb/Safetycore-placeholder/releases/download/v2.0/

...Safetycore-placeholder(dot)apk


.
v3.0 now available :
https://github.com/daboynb/Safetycore-placeholder/releases/tag/v3.0
.

1
Ant mill (en.wikipedia.org)
 

Collective behavior leads to both collective intelligence and collective stupidity. This also applies to artificial intelligence (artificial neurons) and biological neurons (in my opinion).
cross-posted from: https://lemmy.world/post/26059204

An ant mill is an observed phenomenon in which a group of army ants, separated from the main foraging party, lose the pheromone track and begin to follow one another, forming a continuously rotating circle.

 

Best for user experience :User want material that is :

  • newly published, and
  • classified using a hierarchy of methods.

Lemmy has :

  • communities
  • post
  • comments and
  • votes

which constitutes such a hierarchy of classification and engagement tools.

.
Design Flaws + Solutions

Notwithstanding the following :
Despicable//illegal posts should absolutely be deleted. Same from likely comments. But aside from that ...

Features creating user disengagement and disinterest :

Arbitrary deletions :
Since not following communities rules results in posts being deleted. Since this includes active conversation inside such posts. Since such community rules are quite arbitrary and difficult to judge by moderators. ... There has to be a better way than deleting such posts in such circumstances.

Design proposal :

Post unlinking // relinking :
A better design would allow moderator's action (or even bad enough vote totals) to unlink an off-topic-post from a community without deleting it from the instance (site).

Multi-linking of posts :
Better yet, a single post could be simultaneously linked to many communities even across many instances while maintaining one single global space of conversations.

Automatic anti-duplication
Creating duplicates of a post should be prevented automatically ... what should be prevented is the creation of new post linking to the same web page (same URL) as an already existing post does ... unless maybe with special permissions or if made after a long enough elapsed time.

New design's benefits :
This should result in a better user experience by grouping all discussions from one topic inside a unique post ... not dividing into multiple concurrent discussions, almost simultaneously, inside different (( posts // communities // instances )) what is in fact a single topic.
This would also provide peace of mind against arbitrary deletions.

Benefits for moderators
This would also decrease some drama (user to moderator feuds) and simplify moderator's work.

 

cross-posted from:
originally posted by :
@Talaraine@fedia.io
in community :
!politics@lemmy.world
deleted post in politics :
https://lemmy.world/post/25880650
Also deleted at : https://fedia.io/m/politics@lemmy.world/t/1827324
.

The Budapest Memorandum on Security Assurances comprises three substantially identical political agreements signed at the OSCE conference in Budapest, Hungary, on 5 December 1994, to provide security assurances by its signatories relating to the accession of Belarus, Kazakhstan and Ukraine to the Treaty on the Non-Proliferation of Nuclear Weapons (NPT). The three memoranda were originally signed by three nuclear powers: Russia, the United States and the United Kingdom. China and France gave somewhat weaker individual assurances in separate documents. The memoranda, signed in Patria Hall at the Budapest Convention Center with U.S. Ambassador Donald M. Blinken amongst others in attendance, prohibited Russia, the United States and the United Kingdom from threatening or using military force or economic coercion against Ukraine, Belarus, and Kazakhstan, "except in self-defence or otherwise in accordance with the Charter of the United Nations."...

 

This community really needs moderation 🤣

 

Anticipation story : in 2025 in the USA, the military has to decide whether to side with the people or with a growing tyrannical government.

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