Tuomas Väisänen 📼🧟
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waeiski.bsky.social
Tuomas Väisänen 📼🧟
@waeiski.bsky.social
1.3K followers 2.1K following 210 posts
🧑‍🎓 Postdoc & computational urban geographer interested in #GIScience #UrbanStudies #Multilingualism #Diversity #Mobility #Geography #BigData + #Linux.

💻 @digigeolab.bsky.social
🎓 @helsinki.fi
🌍 Helsinki, Finland

https://waeiski.github.io
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waeiski.bsky.social
It is quite nice to have my favorite team connection back after a lengthy renovation, just in time for the winter season when cycling gets a bit more tricky (and unpleasant).

The #PublicTransit operator #HSL has people handing out commemorative candies to mark the occasion in #Helsinki.
A green-colored box of fruit candies that says "Welcome back" on the cover. It has a graphic of a heart that contains the HSL icon of a tram going between two locations. The bottom of the box has the HSL logo and initials in Finnish and Swedish.
November 3, 2025 at 6:43 AM
waeiski.bsky.social
I also presented yesterday some preliminary work on exploring structural changes in the #Erasmus student mobility network in #Europe.

Student mobility has rebounded, and the structure has changed, with larger regional cities becoming more relevant, and Brexit removing the UK's relevance in Erasmus.
September 13, 2025 at 1:14 PM
waeiski.bsky.social
To round off #ECTQG it is @miladmzdh.bsky.social presenting his work on understanding the importance of regional connectivity using multiple mobility flows.

@digigeolab.bsky.social
@mobi-twin-project.bsky.social
Milad presenting his work. Milad presenting his work.
September 13, 2025 at 1:10 PM
waeiski.bsky.social
In the final session of #ECTQG we have @karasov.bsky.social presenting his work on measuring the quality of time spent in nature. Very interesting stuff!
September 13, 2025 at 12:32 PM
waeiski.bsky.social
Next up we have @ollejarv.bsky.social presenting his work in using mobility data to assess #CrossBorder integration across #Europe at #ECTQG. New approaches are needed to better understand the cross-border regions from the perspectives of people and social interactions. @digigeolab.bsky.social
Olle presenting in a room full of people.
September 13, 2025 at 9:21 AM
waeiski.bsky.social
Good to see Modupe Osunkoya presenting her work on dynamic #urban #vitality in #Tallinn at the #ECTQG conference. It is a nice collaboration with her and Jenni Partanen from #TalTech university and @digigeolab.bsky.social
Modupe presenting her work for a room full of people. Modupe presenting maps of her analysis.
September 13, 2025 at 8:45 AM
waeiski.bsky.social
The second day at #ECTQG starts with a keynote from @tuulitoivonen.bsky.social on the current state and future directions of #mobility and #accessibility #research. @digigeolab.bsky.social
September 12, 2025 at 6:38 AM
waeiski.bsky.social
What a cool conference #ERSA2025 was! Many sessions from @mobi-twin-project.bsky.social project, lots of new people, interesting research, and great food!

It was my first time at #ERSA and hopefully one of many to come!
September 2, 2025 at 6:56 AM
waeiski.bsky.social
Continuing with #CrossBorder research at #ERSA2025 is Elias Günther presenting his work on data issues in crossborder studies conducted in #CrossGov, an #ESPON project.
Elias Günther presenting his work.
August 28, 2025 at 2:23 PM
waeiski.bsky.social
Wrapping up the second day of #ERSA2025 we have @ollejarv.bsky.social from @digigeolab.bsky.social presenting his work on using #BigData describing #mobility of people to assess #CrossBorder integration in #Europe.
Olle explaining how to delineate functional border regions using mobile big data and kernel density estimation.
August 28, 2025 at 1:49 PM
waeiski.bsky.social
The second day of #ERSA2025 starts with @anpanori.bsky.social presenting her work in @mobi-twin-project.bsky.social on regional attractiveness with @vicenteroyuela.bsky.social and @jlopeztamayo.bsky.social.

#RegionalScience #Geography #GreenTransition #Digitalization #TwinTransition #Europe
Anastasia presenting in a conference room full of people.
August 28, 2025 at 7:27 AM
waeiski.bsky.social
Our session in #ERSA2025 starts with Luca Alfieri's presentation on flexible working arrangements' impact on migration decisions in #Lombardy Italy. This work is also an output from the @mobi-twin-project.bsky.social project.
Luca starting his presentation. In the background you can see the title slide and Luca to the left. In the foreground there are some conference room chairs.
August 27, 2025 at 1:37 PM
waeiski.bsky.social
Next up Manos Matsaganis presented his work, also from @mobi-twin-project.bsky.social, on using microsimulation to explore how new social benefit policies in Greece and Italy reduced child poverty.

#ERSA #ERSA2025
Manos presenting his work in a conference room at ERSA conference.
August 27, 2025 at 12:55 PM
waeiski.bsky.social
Currently @thanasisziogas.bsky.social is presenting his work on spatial micro simulation conducted in the @mobi-twin-project.bsky.social research project. It is a full house! 💪

#geography #microsimulation #SpatialAnalysis #abm #ERSA #ERSA2025
Thanasis presenting his work in a conference room that is full of people.
August 27, 2025 at 11:45 AM
waeiski.bsky.social
The 1st day of #ERSA2025 has started!

Come check out session S16 for latest insights on changing regional #mobility patterns in Europe today at 16:30-18:30!

I am presenting my work on #Erasmus student mobility and joint work on regional attractiveness led by the fantastic @miladmzdh.bsky.social!
Panteion University in Athens, Greece. Entrance hall of the social sciences building at Panteion University. Poster of the ERSA conference and its sponsors.
August 27, 2025 at 9:17 AM
waeiski.bsky.social
🚨UPDATED DATA🚨

Our #Erasmus student #mobility flow data has been updated with over 280 000 students from 2023, bringing the grand total to over 2.5 million students covered by the data from 2014 until 2023.

💾 Data: doi.org/10.5281/zeno...
📜 Article: doi.org/10.1038/s415...

#OpenData #Europe #EU
A map of student mobility flows going across Europe on the regional NUTS 3 level. Majority of the largest flows go between large cities in France, Spain, Italy, Germany, and the UK. Some outlier major flows go to Stockholm, Istanbul, Dublin and Warsaw. The flows represent absolute numbers of Erasmus+ students and their origins and destinations. The flows have not been weighted by regional enrolled student counts, and thus regions with larger populations are emphasized, and potentially more meaningful patterns are not visible.
August 5, 2025 at 6:08 AM
waeiski.bsky.social
I found an interesting book of old maps and urban plans of #Helsinki, some of which I had never seen. I love this type of cartography, and I have a reproduction of one of these on my wall, because of course I do.

#cartography #history #Helsingfors #historia #kartta #map
An old map from 1696 showing the beginnings of Helsinki as a few crisscrossing roads where the current city centre is and some fields. A map from the 1700s showing a gradual expansion of the city and the emergence of two fortresses to the north and south. A detailed city plan from 1878 showing much of the current city centre structure. This is the one I have on my wall.
July 6, 2025 at 1:43 PM
waeiski.bsky.social
Interesting findings and future directions presented at the meeting this morning! Green and digital aspects are playing a role in regional attractiveness.

In the afternoon we have a stakeholder event with representatives from #Mikkeli and #EteläSavo from the academic, public and private sectors.
Mobi-Twin partners discussing the current status of the project in the premises of the Ruralia Institute in the city of Mikkeli.
June 5, 2025 at 8:12 AM
waeiski.bsky.social
Second day of #LBS2025 is about to start and so are the @digigeolab.bsky.social presentations.
The scientific entourage of the Digital Geography Lab members and alumni in front of the Dipoli building at Aalto University in Espoo, Finland. Front row from the left: Henrikki Tenkanen, Davi Gressler, Leyi Xu Back row from the left: Oleksandr Karasov, Milad Malekzadeh, Robert Klein, Tatu Leppämäki, Matti Hästbacka and yours truly.
May 8, 2025 at 5:27 AM
waeiski.bsky.social
And we're off with the introduction and opening words to #LBS2025 from Juha Oksanen and Mari Laakso, and the first key note from @grantdmckenzie.bsky.social on access and inclusion through urban mobility.
Grant McKenzie starting his presentation on urban mobility and its connections to accessibility and inclusion. Juha Oksanen speaking in the large auditorium in the Dipoli building at Aalto University.
May 7, 2025 at 6:36 AM
waeiski.bsky.social
The 19th Location Based Services conference #LBS2025 is about to start in #Espoo at #AaltoUniversity.

I am presenting tomorrow, so today I get to chillax 😎 Very good representation from @digigeolab.bsky.social
The LBS poster in front of the Dipoli building at Espoo. The Dipoli building the conference is hosted at. In front is a massive metallic pine cone.
May 7, 2025 at 5:59 AM
waeiski.bsky.social
Hauskaa vappua! Glada vappen! Happy Labour Day! 🎉🥂
May 1, 2025 at 11:22 AM
waeiski.bsky.social
🙋 Why should I use it?

a) To improve legibility of large and complex flow data between origins and destinations. A map that is not clear is worthless.

b) To make cooler visualisations.

c) Because it is fun!

d) All of the above!
Comparison of two maps presenting the same data of mobility going across Europe on the NUTS 3 spatial level. The one on the left shows straight line geometries between origins and destinations. The one on the right shows edge-bundled geometries of the same data.
April 17, 2025 at 9:53 AM
waeiski.bsky.social
✨ NEW TOOL FOR #MOBILITY DATA ✈️🚚🚗🏃

Do your visualisations of origin-destination matrices look like hairy messes? Try the new #EdgeBundling tool by me, Oula Inkeröinen, @miladmzdh.bsky.social & @ollejarv.bsky.social!

🛠️ The tool: doi.org/10.5281/zeno...

@mobi-twin-project.bsky.social
April 17, 2025 at 9:53 AM
waeiski.bsky.social
Our article lead by Hanna-Mari Pienimäki with @thiip.bsky.social received an award for being a #TopViewedArticle in @jslx.bsky.social @wiley.com.

We explored the spatiotemporal and affective qualities of linguistic landscapes in 3 neighborhoods in #Helsinki.

📜 Article: doi.org/10.1111/josl...
The certificate I received for the article "Making sense of linguistic diversity in Helsinki, Finland: The timespace of affects in the linguistic landscape".
April 16, 2025 at 10:43 AM