Sander Kieft

Architect for PVH (Tommy Hilfiger and Calvin Klein) in Amsterdam. Interested in high traffic websites and services, big data, data science & search

[World of Engineering @engineers_feed]

Heat has always been one of engineering’s biggest headaches.

You generate it almost everywhere. You can’t steer it. It just spreads - randomly, evenly - into whatever sits around it.

That changed on July 23, 2026.

Researchers at UCLA showed that inside boron arsenide, a crystalline semiconductor, heat doesn’t have to behave that way. It can travel in tight, focused beams, steered by the crystal’s atomic structure itself.
The effect is called phonon focusing. Phonons are the tiny quantum vibrations that actually carry heat through solids. In most crystals at room temperature they bounce around constantly, so heat simply diffuses outward in every direction at once. In boron arsenide the geometry of the lattice forces those phonons into preferred pathways. Instead of spreading in a neat circle, the heat shoots along specific crystal planes, almost like light guided down an optical fibre.

The team confirmed it with nanoscale temperature maps. Ordinary materials produced the familiar circular hot spot. Boron arsenide produced sharp, ray-like patterns that lined up exactly with the crystal’s orientation. Depending on which plane they looked at, they saw six-fold, eight-fold, or four-fold focusing patterns, each one predictable, each one selectable just by choosing how the crystal is oriented.
That’s why chip designers are paying attention. Overheating is still the main thing holding processors back. More transistors mean more heat, which means you have to throttle the clock speeds. If you can route that heat away from the sensitive spots along deliberate paths instead of letting it smear everywhere, chips can run faster, denser, and cooler.

[GoLang Trends @GolangTrends]

Embedding Files and Images in Go: Virtual Filesystems #golang #dormosheio https://t.co/TdADDCdlnM

[Sander Kieft @skieft]

Attended ElasticOn yesterday in Amsterdam. And learned about Better Binary Quantization (BBQ), which recently got implemented in Elastic and Lucene. Based of RaBitQ paper. Very interesting for everybody busy with vector search and RAG systems. https://t.co/bfRsjozzpX

[inversecos @inversecos]

1\ My thoughts on the Chinese APT contractor leak 🇨🇳

Specifically, I want to talk about the leaked
- iOS Spyware
- Physical implantable devices
- Email surveillance system

Let's consider detection and how these would be installed.

[Alvaro Cintas @dr_cintas]

DALL•E 3 is great to create tileable images.

These kinds of images need matching borders to create seamless patterns such as fabrics, textures & more.

Here are the prompts I used and a quick guide to fix the images if the result is not perfect:

[Suzan Verberne 🤹‍♀️ @suzan]

Who joins us as a postdoc in this cool, interdisciplinary project, with potentially a large societal impact and a lovely team to work with 🤝🗨️💚🧠

https://t.co/jmHxuz8rVM

@CLSRadboud

[Budapest Data Forum @BudapestData]

Our Call for Proposals is open until March 31!
Key topics include #datamodeling #dataintegration #dataquality #datagovernance.
Talks can be delivered either in-person in Budapest or remotely, speakers gets free tickets.
https://t.co/XVhR3OUak4
#budapestdata23 #dataengineering

[Budapest Data Forum @BudapestData]

Our Call for Proposal is now open! Presentations on #dataplatforms and #dataengineering topics are welcome. Talks can be delivered either in-person in Budapest or remotely. The submission deadline is March 31.
https://t.co/cKitcml8hH
#budapestdata23 #cfp

[Massimo @Rainmaker1973]

Women's fashion 1910’s-2010’s in 30 seconds using AI

[Russell Klimas: https://t.co/6znrNKecNZ]

[/Fay-lee-nuh/ @Felienne]

For a piece I am writing I am looking for terms that distinguish activism for your own group (women suffragettes) versus activism for others (white people fighting racism) Are there any accepted or common terms?

[Budapest BI Forum @BudapestBI]

We are happy to introduce our first group of international Power BI speakers:
@powerbiguy, @datamozart and @kavasim.
Our Power BI track: https://t.co/pHTXrx37Cf
Early bird tickets are on sale until end of September.
https://t.co/FJyImt91MM

#budapestbi22 #powerBI

[David das Neves @david_das_neves]

Great overview and a quick explanation of all Tactics & Techniques
[Article series] MITRE ATT&CK Matrix for Kubernetes: Tactics & Techniques
Part 1 https://t.co/Hu0r4Oy7nw
Part 2 https://t.co/hyRvFmNQIw
Part 3 https://t.co/dArvZJtRap

#Kubernetes #CyberSecurity #MITRE

[David Eerdmans 🇺🇦 @DavidEerdmans]

Dit is wel echt mooi gedaan. Een site waar je kan zien hoe ver je in vijf uur treinreizen kan komen vanaf elk treinstation in Europa. https://t.co/6IIhqFUZV0

[Papers with Code @paperswithcode]

10 Recent Trends in Language Models

In this thread, we summarize ten recent trends and insights in language models. ↓

[Sander Kieft @skieft]

@meneerharmsen can we get an update version of the Reverse Engineering 90s Sierra games on the agenda for next time? This was still one of the most viewed Sanoma Tech Talks recordings: https://t.co/gVS88AGqdz

[Sander Kieft @skieft]

Finally real life events. Back in the office with PVH Tech Talk.

[NSA Cyber @NSACyber]

Great news! A new version of D3FEND is now available at https://t.co/p0R1M5btjt. D3FEND enables other cyber professionals to tailor defenses against specific cyber threats and reduce a system's potential attack surface. Learn more about D3FEND here: https://t.co/02npcnrPgi

[» teej @teej_m]

I thought these were drawn exclusively for O’Reilly. My whole life is a lie.

[Bryan Boreham ➡️ BlueSky @bboreham]

Come to my talk at FOSDEM on Saturday!
It's about how I speeded up the Go regexp package.
https://t.co/24JpHE6PpU

Try out the code here: https://t.co/F35PFOiPqu

[ECIR 2022 @ecir2022]

Registration is open! https://t.co/EB54zLYsx0