Martin Schmidt
@schmaidt.bsky.social
150 followers 120 following 160 posts
This is about craftbeer & homebrewing, sourdough bread baking, mathematical optimization, OR, photography, cooking, and random rant!
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schmaidt.bsky.social
German News Wrap-Up:

„Wir verschieben die Debatte, weil wir uns nicht einig sind!“

Es grüßt der demokratische 💀

oh boy …
schmaidt.bsky.social
SCHMAIDT'S NERD BREWING presents ... VIENNA CALLING (Beer Festival Trier 2025 Edition)

A bit more than a week to go!
schmaidt.bsky.social
Once upon a time in Stockholm‘s underground.

Let’s continue this series of metro station #photos from #sweden with Solna Centrum Station!
schmaidt.bsky.social
Once upon a time in Stockholm‘s underground!

A series about the #Stockholm metro stations was on my #photography todo list since 2022 when I was in this wonderful capital of #Sweden for the first time!

This year, I finally found the time and here‘s the #photo of the first stop: #Akalla!
Reposted by Martin Schmidt
euroonline.bsky.social
EURO Journal on Computational Optimization Special Issue: EUROPT Conference 2025. Submission Deadline 1st November 2025.
www.sciencedirect.com/special-issu...
schmaidt.bsky.social
@yasminebeck.bsky.social is continuing her PhD-prize-collecting conference tour!

This time the PhD prize of the German OR society!

Congratulations! 💪
schmaidt.bsky.social
Once upon a time in #Stockholm, #Sweden

Why not posting some old but unpublished shots from Stockholm while being in Stockholm again?

#travel #travelphotos #blue #hour #bluehour #cityscape #gamlastan #wideformat #night #photography #nightphotography #travelphotography #travelphoto #scandinavia
schmaidt.bsky.social
You want to use the BOBILib (bobilib.org) instances to test your new bilevel optimization solver?

And you don't want to code your own parser?

No problem, use this one: gitlab.uni-trier.de/nlopt/mps-au...!
BOBILib: Bilevel Optimization (Benchmark) Instance Library
bobilib.org
schmaidt.bsky.social
Once upon a time in Lausanne, Switzerland!

#travel #blackwhite #blackwhitephotography #blackandwhite #lausanne #suisse🇨🇭 #suisse #schweiz #switzerland
schmaidt.bsky.social
Spread the word! 👍
schmaidt.bsky.social
Final deadline extension for the

International Workshop on Algorithmic Optimization

at @unitrier.bsky.social, Germany, which takes place

September 23-26.

Registration is open until Friday, August 15! Don't miss it!

alop.uni-trier.de/event/intern...
International Workshop on Algorithmic Optimization | ALOP
alop.uni-trier.de
schmaidt.bsky.social
Motivated by today's US NEIPAs I wanted to have some grassy notes & dankness. I don't want to say that this is the masterpiece of dankness for sure, but I think it goes into the right direction.

#homebrew #brewing #nerd #brew #craft #beer #craftbeer #NewEnglandIPA #IPA #neipa #hazyipa #hazy
schmaidt.bsky.social
SCHMAIDT'S NERD BREWING ... proudly presents ... HOLLE'S SUMMER JUICE 2025

I am slowly getting to where I want my New England IPA journey to head to. A bright-yellow-milky-hazy appearance, a stable and super-white head.

#homebrew #brewing #brew #craft #beer #craftbeer #IPA #neipa #hazyipa #hazy
schmaidt.bsky.social
I like it. And I will come back for sure when the construction crane is gone 🙄

#Zurich #travel #photography #travelphotos #switzerland #bluehour #goldenhour #cityscape #Zürich #Schweiz

More on www.schmaidt.de!
schmaidt.bsky.social
Once upon a time in Zurich!

I don’t know why but I ignored the country for far too long. But this year, I had the chance to visit Switzerland 🇨🇭 twice and Zurich once.
schmaidt.bsky.social
Once upon a time at Lac Leman, #switzerland🇨🇭 ...

A beautiful #lake with beautiful light. #Photo taken in March 2025.

#lake #light #clouds #blackwhite #blackandwhite #blackandwhitephoto #blackwhitephotography #landscape #seascape #mountains #switzerland #schweiz #travel #travelphoto #roadtrip
schmaidt.bsky.social
More of such #photography stuff on www.schmaidt.de!
schmaidt.bsky.social
Once upon a time in #Annecy

For sure one of the most positive surprises in our #travel life so far — a beauty with a nice old town, #mountains, a beautiful #lake, good restaurants, and even some nice #craftbeer pubs 😉

#france #france🇫🇷 #travel #travelphoto #street #photography #streetphotography
schmaidt.bsky.social
Once upon a time in Zurich, Switzerland

The Negrellisteg was on my #photography todo list since quite some time. This year, I was finally able to capture it!

More of such stuff you'll find at www.schmaidt.de.

#photo #traveling #travel #Zurich #Zürich #Switzerland #Schweiz #architecture
schmaidt.bsky.social
Yet another paper alert: Our paper "Mixed-Integer #Bilevel Optimization with Nonconvex Quadratic Lower-Level Problems: #Complexity and a Solution Method" (jointly with Immanuel Bomze and Andreas Horländer) is published in the Journal of Global #Optimization.

link.springer.com/article/10.1...
schmaidt.bsky.social
By the way: This is a S-189 and W-34/70 co-pitch that seem to have worked pretty well. The fermentation character is pretty clean. Lucky me!

Cheers from Trier!

#beer #craftbeer #craft #homebrew #homebrewing #mexican #lager #mexicanlager #Motueka #Gose #lime #lemon #kegerator #salt
schmaidt.bsky.social
I guess next time I am going to be a bit more self-confident and add some larger amount of salt, zests, and juice. But let's see how this comes out of the kegerator when it rested for 3 more weeks, which gives 5 weeks - my planned lagering time for this one.
schmaidt.bsky.social
Am I happy: Yes! I don't detect any off-flavors, which I am pretty proud of for such a very young hop-and-juice dry-hopped Lager beer.

Am I 100% happy: Well, I guess never. I didn't want to overdo it with the salt, the lime, and the lemon since I brewed this one for the first time.
schmaidt.bsky.social
That's it: A hybrid fake-style Mexican Lager Gose with Lime and Lemon.

It looks like a summer sun. That was the idea. However, it is still very young (it went to the keg 16 days ago) and I hope it will clear up quite a bit during the next weeks of lagering after this very early test.