Ethan O'Connor

[Ethan O'Connor @ethanoconnor]

(1/6) Really cool visualization of the entry guidance capabilities of the Apollo Command Modules. The 3 zones in the central corridor correspond to trajectories with 3 distinct control patterns.

In all cases, early entry saw a transition from 3-axis reactive attitude control to

[Ethan O'Connor @ethanoconnor]

@littmath This is the language I attached to a possible counterexample of a conjecture:

[Ethan O'Connor @ethanoconnor]

@KSeattleWeather North Bend around 3pm (near Bendigo and Sydney)

[Ethan O'Connor @ethanoconnor]

@KSeattleWeather South Fork Snoqualmie at Exit 38, 11am on Wednesday

[Ethan O'Connor @ethanoconnor]

@WhidbeyWXGuy The rainfall up the valley at Marblemount has been running ahead of the highest member in the UW ensemble (purple line with dots - observed)!

[Ethan O'Connor @ethanoconnor]

@clumma @ChrisPainterYup Propagation latency across 1MW of compute distributed evenly across 1MW of PV is only about 0.2us for free-space optical links, 0.3us for fiber. Not workable for some HPC loads but fine for most training and almost all inference loads?

[Ethan O'Connor @ethanoconnor]

@GregHBurnham

[Ethan O'Connor @ethanoconnor]

@GregHBurnham Change the load wording to "If the delivery trucks have an absolute maximum load rating of 2000 pounds..." and GPT-5 non-thinking does fine:

[SegerYU @SegerYU]

中国载人月面着陆器着陆起飞综合验证试验高清图集（10 张）。（📷CMS）

[Ethan O'Connor @ethanoconnor]

@sdamico Battery-backed point-of-use heaters, paired with a heat-pump tank for large draws, save water & energy: heat only what exits the tap instead of reheating the full volume you send down the drain waiting for hot water. And the battery can be quite modestly sized - 250Wh is plenty.

[arXiv bot (quant-ph) @krxiv_quant_ph]

Quantum-assured magnetic navigation achieves positioning accuracy better than a strategic-grade INS in airborne and ground-based field trials
https://t.co/7czeURNpjs
Murat Muradoglu et al.
https://t.co/UhPnJHBkCb

[MrNeRF @janusch_patas]

Matrix3D: Large Photogrammetry Model All-in-One (with code)

TL;DR: "We present Matrix3D, a unified model that performs several photogrammetry subtasks, including:

- Pose estimation
- Depth prediction
- Novel view synthesis

All using the same model."

Contributions (cited from paper):
In summary, our key contribution is the unified diffusion transformer model, which has flexible input/output configurations and enables several tasks in the photogrammetry process.

The proposed method eliminates the need for multiple task-specific models, streamlining the process with a single model.

Extensive quantitative and qualitative experiments demonstrate the state-of-the-art performance of our method compared with existing task-specific approaches.

[Lean @leanprover]

#LeanLang is becoming essential infrastructure for safety-critical cryptographic implementations. At #ZKProof 7 in Sofia, three talks showcased how Lean's formal verification capabilities are transforming zero-knowledge proof systems.

A quick thread on what you missed 🧵⬇️

[Nahel Belgherze @WxNB_]

Newly available high-resolution satellite imagery collected by Maxar reveals sections of the surface rupture near the zone of maximum surface displacement of last week’s Mw 7.7 earthquake in Myanmar. Rupture is ~500 km long, with up to 5 meters of fault slip.

[Davide Scaramuzza @davsca1]

I am sharing a tutorial on event cameras that I gave a few months ago at the 2024 Int. Conf. on Computational Photography: https://t.co/g6WZ9nO4sq
Below, you will find additional resources on event cameras, such as source codes, datasets, simulators, drivers, courses, and tutorials. I hope it is helpful to researchers and novices interested in this exciting vision sensor!

Our research page on event-based vision: https://t.co/6wYAYo4UTg

All worldwide resources on event cameras (publications, software, drivers, datasets, simulators, where to buy, etc.):
https://t.co/mlFHnbWWY2

For a course on event-based robot vision, see this material by Prof. @guillermogb
1. Slides: https://t.co/bL3L166PBl
2. Video recordings: https://t.co/59gH7KCknm

For a tutorial on noise modeling of event cameras, see this tutorial by Prof. Tobi Delbruck, who is the lead inventor of the first commercial event camera: https://t.co/UzZ7FUNfrc

Datasets used in my lab research:
1. https://t.co/hFf4OAbHBt
2. https://t.co/MjMjLRG6zH
3. https://t.co/p0NzTcOZR0

Simulator used in my lab: https://t.co/fsp56otH6u

Survey paper on event cameras:
https://t.co/ERRioFfmhD

@UZHspacehub @UZH_en @uzh_ifi @ERC_Research @UZH_Science

[Lukasz Olejnik @lukOlejnik]

Poland now has the largest quantum key distribution network in Europe, and second after China. Pionier-Q – 1 770 km.

[Hacks & Wonks @HacksWonks]

We’re baaaaaack! Some news:

Crystal & Monisha Harrell have acquired KVRU 105.7 FM, a non-profit, non-commercial community radio station based in South Seattle, with plans to preserve it as a trusted resource through community-driven programming

📻🎶🎙️

https://t.co/LoVx3vyRSR

[ESA's Hera mission @ESA_Hera]

Especially to mark our Hera mission's moment of closest approach during its Mars flyby, at just 5000 km away at 13:51 CET (12:51 GMT) - here's one we made earlier!

[CNSA Watcher @CNSAWatcher]

CNSA plans Mars sample return by 2030, says Sun Zezhou. Tianwen-1 mission already orbited, landed, and explored Mars. Tianwen-3 mission will follow for sample return. Full HD:https://t.co/8wwAk4Pywk

[SegerYU @SegerYU]

GF-3 超精细条带模式下 3 m 分辨率的 FAST 望远镜近期影像。

[Ethan O'Connor @ethanoconnor]

@northbendwx Looking north and south from the disc golf course right now!