Tuomas Väisänen 📼🧟
@waeiski.bsky.social
🧑🎓 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
💻 @digigeolab.bsky.social
🎓 @helsinki.fi
🌍 Helsinki, Finland
https://waeiski.github.io
Pinned
Tuomas Väisänen 📼🧟
@waeiski.bsky.social
· Mar 26
🚨🌍 NEW ARTICLE 🌍🚨
We geocoded the #mobility of over 2 million #Erasmus students across #Europe from 2014 to 2022 with @miladmzdh.bsky.social, Oula Inkeröinen & @ollejarv.bsky.social.
doi.org/10.1038/s415...
@mobi-twin-project.bsky.social
@digigeolab.bsky.social
@springernature.com
#GIScience
We geocoded the #mobility of over 2 million #Erasmus students across #Europe from 2014 to 2022 with @miladmzdh.bsky.social, Oula Inkeröinen & @ollejarv.bsky.social.
doi.org/10.1038/s415...
@mobi-twin-project.bsky.social
@digigeolab.bsky.social
@springernature.com
#GIScience
Reposted by Tuomas Väisänen 📼🧟
#30DayMapChallenge Day 10 - Air: Common Swift (Apus Apus) sightings in Finland in 2025 from eBird (+one Taylor Swift (Private Jet))
November 10, 2025 at 4:13 PM
#30DayMapChallenge Day 10 - Air: Common Swift (Apus Apus) sightings in Finland in 2025 from eBird (+one Taylor Swift (Private Jet))
Reposted by Tuomas Väisänen 📼🧟
#30DayMapChallenge Day 4 - My Data
The 2025 citybike season in Helsinki has come to an end last week. As an avid user of the bike sharing system, Robert Klein has plotted his more than 350 trips of this year's season on a map.
#bikesharing #cycling #mobility
The 2025 citybike season in Helsinki has come to an end last week. As an avid user of the bike sharing system, Robert Klein has plotted his more than 350 trips of this year's season on a map.
#bikesharing #cycling #mobility
November 4, 2025 at 1:51 PM
#30DayMapChallenge Day 4 - My Data
The 2025 citybike season in Helsinki has come to an end last week. As an avid user of the bike sharing system, Robert Klein has plotted his more than 350 trips of this year's season on a map.
#bikesharing #cycling #mobility
The 2025 citybike season in Helsinki has come to an end last week. As an avid user of the bike sharing system, Robert Klein has plotted his more than 350 trips of this year's season on a map.
#bikesharing #cycling #mobility
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.
The #PublicTransit operator #HSL has people handing out commemorative candies to mark the occasion in #Helsinki.
November 3, 2025 at 6:43 AM
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.
The #PublicTransit operator #HSL has people handing out commemorative candies to mark the occasion in #Helsinki.
Reposted by Tuomas Väisänen 📼🧟
#30DayMapChallenge Day 1 - Points
Creating a #centroid is not as trivial as you might think!
If you are dealing with regional population data, the locational difference between a regular geometric centroid and a population-weighted centroid can be vast!
Map by @waeiski.bsky.social
#GIS #QGIS
Creating a #centroid is not as trivial as you might think!
If you are dealing with regional population data, the locational difference between a regular geometric centroid and a population-weighted centroid can be vast!
Map by @waeiski.bsky.social
#GIS #QGIS
November 1, 2025 at 3:25 PM
#30DayMapChallenge Day 1 - Points
Creating a #centroid is not as trivial as you might think!
If you are dealing with regional population data, the locational difference between a regular geometric centroid and a population-weighted centroid can be vast!
Map by @waeiski.bsky.social
#GIS #QGIS
Creating a #centroid is not as trivial as you might think!
If you are dealing with regional population data, the locational difference between a regular geometric centroid and a population-weighted centroid can be vast!
Map by @waeiski.bsky.social
#GIS #QGIS
Reposted by Tuomas Väisänen 📼🧟
Our collaboration with Metsähallitus is moving ahead even more efficiently and with greater impact as we have signed MoU with Metsähallitus Parks & Wildlife Finland to deepen our research cooperation and streamline the two-way sharing of data and knowledge.
blogs.helsinki.fi/digital-geog...
blogs.helsinki.fi/digital-geog...
October 27, 2025 at 10:09 AM
Our collaboration with Metsähallitus is moving ahead even more efficiently and with greater impact as we have signed MoU with Metsähallitus Parks & Wildlife Finland to deepen our research cooperation and streamline the two-way sharing of data and knowledge.
blogs.helsinki.fi/digital-geog...
blogs.helsinki.fi/digital-geog...
Reposted by Tuomas Väisänen 📼🧟
Do you ever use your mobile phone when spending time outdoors?
The answer is probably yes. In that case, you leave digital footprints about your visit. 🦶
How are these data useful for the sustainable management of nature areas?
👉 Watch our video for that and more! www.youtube.com/watch?v=_U5G...
The answer is probably yes. In that case, you leave digital footprints about your visit. 🦶
How are these data useful for the sustainable management of nature areas?
👉 Watch our video for that and more! www.youtube.com/watch?v=_U5G...
Mobile Big Data For Understanding People in Nature
What are digital footprints and how can they be useful for managers of nature recreation areas? In this video, researchers from the Digital Geography Lab, University of Helsinki, explain how digital…
www.youtube.com
October 21, 2025 at 1:03 PM
Do you ever use your mobile phone when spending time outdoors?
The answer is probably yes. In that case, you leave digital footprints about your visit. 🦶
How are these data useful for the sustainable management of nature areas?
👉 Watch our video for that and more! www.youtube.com/watch?v=_U5G...
The answer is probably yes. In that case, you leave digital footprints about your visit. 🦶
How are these data useful for the sustainable management of nature areas?
👉 Watch our video for that and more! www.youtube.com/watch?v=_U5G...
Reposted by Tuomas Väisänen 📼🧟
Tinpot dictatorship coming to North America
Trump: "I'm gonna be meeting with generals and admirals and with leaders, and if I don't like somebody, I'm gonna fire them right on the spot."
September 30, 2025 at 2:14 PM
Tinpot dictatorship coming to North America
Reposted by Tuomas Väisänen 📼🧟
Urban planners should not be afraid of AI! 🏙️🤖
AI won’t replace planners, but it is reshaping how we imagine, design & govern our cities. The barrier isn’t tech, it’s mindset.
Read my new piece in Cities: tinyurl.com/3jtx2xrd
#UrbanPlanning #AI #FutureOfCities
AI won’t replace planners, but it is reshaping how we imagine, design & govern our cities. The barrier isn’t tech, it’s mindset.
Read my new piece in Cities: tinyurl.com/3jtx2xrd
#UrbanPlanning #AI #FutureOfCities
September 24, 2025 at 7:10 AM
Urban planners should not be afraid of AI! 🏙️🤖
AI won’t replace planners, but it is reshaping how we imagine, design & govern our cities. The barrier isn’t tech, it’s mindset.
Read my new piece in Cities: tinyurl.com/3jtx2xrd
#UrbanPlanning #AI #FutureOfCities
AI won’t replace planners, but it is reshaping how we imagine, design & govern our cities. The barrier isn’t tech, it’s mindset.
Read my new piece in Cities: tinyurl.com/3jtx2xrd
#UrbanPlanning #AI #FutureOfCities
Reposted by Tuomas Väisänen 📼🧟
How can we accurately map where people live and work when they frequently cross national borders? Traditional surveys miss complexity, mobile network operators data are hard to get across borders, and individual social-media traces are sparse—yet social media is inherently transnational.
September 18, 2025 at 9:29 AM
How can we accurately map where people live and work when they frequently cross national borders? Traditional surveys miss complexity, mobile network operators data are hard to get across borders, and individual social-media traces are sparse—yet social media is inherently transnational.
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.
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
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
@digigeolab.bsky.social
@mobi-twin-project.bsky.social
September 13, 2025 at 1:10 PM
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
@digigeolab.bsky.social
@mobi-twin-project.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
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!
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
September 13, 2025 at 9:21 AM
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
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
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
Reposted by Tuomas Väisänen 📼🧟
This person is a charlatan. Why is there so much uncritical coverage of this obvious nonsense? Where is the actual journalism?
A.I. is changing classrooms. We spoke to the co-founder of Alpha Schools about how her private K-12 schools are using A.I. to generate personalized lesson plans and enabling teachers to spend their time motivating rather than teaching students. nyti.ms/3JHIZub
September 5, 2025 at 7:25 PM
This person is a charlatan. Why is there so much uncritical coverage of this obvious nonsense? Where is the actual journalism?
Reposted by Tuomas Väisänen 📼🧟
"lisäarvopohjainen realismi"😘 . Muutenkin erinomainen juttu. www.apu.fi/artikkelit/i...
Datakeskus ei ole lottovoitto, vaan merkki rappiosta – Ennen Suomi myi Nokiaa, nyt kärkymme murusia Googlen pöydästä
Tuottaja Sammeli Heikkinen on Ilonpilaaja, joka kertoo miksi taas kerran riemuitaan aivan turhaan.
www.apu.fi
September 5, 2025 at 8:09 AM
"lisäarvopohjainen realismi"😘 . Muutenkin erinomainen juttu. www.apu.fi/artikkelit/i...
Reposted by Tuomas Väisänen 📼🧟
Hei #sinitaivas tarvitsemme osanottajia tulevaan työpajaamme!
Jos aluekehitys, aluepolitiikka ja muuttoliikkeet kiinnostavat etenkin kun kyseessä on #Suomi ja tarkemmin itäiset ja pohjoiset osat, niin mukaan vaan!
#Finland #Finnish #Region #Europe #EU
Jos aluekehitys, aluepolitiikka ja muuttoliikkeet kiinnostavat etenkin kun kyseessä on #Suomi ja tarkemmin itäiset ja pohjoiset osat, niin mukaan vaan!
#Finland #Finnish #Region #Europe #EU
Hei sinä Itä- tai Pohjois-Suomalainen!
Kiinnostaako sinua kotiseutusi aluekehitys ja tulevaisuus? Tule mukaan työpajaamme!
🗓️ Syyskuun 12. päivä 2025
⏰ Kello 11:00 – 12:30
Osallistumistiedot blogissamme:
blogs.helsinki.fi/digital-geog...
#Savo #Lappi #Kainuu #Alue #Tulevaisuus #Mikkeli
Kiinnostaako sinua kotiseutusi aluekehitys ja tulevaisuus? Tule mukaan työpajaamme!
🗓️ Syyskuun 12. päivä 2025
⏰ Kello 11:00 – 12:30
Osallistumistiedot blogissamme:
blogs.helsinki.fi/digital-geog...
#Savo #Lappi #Kainuu #Alue #Tulevaisuus #Mikkeli
September 4, 2025 at 2:10 PM
Reposted by Tuomas Väisänen 📼🧟
Hei sinä Itä- tai Pohjois-Suomalainen!
Kiinnostaako sinua kotiseutusi aluekehitys ja tulevaisuus? Tule mukaan työpajaamme!
🗓️ Syyskuun 12. päivä 2025
⏰ Kello 11:00 – 12:30
Osallistumistiedot blogissamme:
blogs.helsinki.fi/digital-geog...
#Savo #Lappi #Kainuu #Alue #Tulevaisuus #Mikkeli
Kiinnostaako sinua kotiseutusi aluekehitys ja tulevaisuus? Tule mukaan työpajaamme!
🗓️ Syyskuun 12. päivä 2025
⏰ Kello 11:00 – 12:30
Osallistumistiedot blogissamme:
blogs.helsinki.fi/digital-geog...
#Savo #Lappi #Kainuu #Alue #Tulevaisuus #Mikkeli
September 4, 2025 at 12:34 PM
Hei sinä Itä- tai Pohjois-Suomalainen!
Kiinnostaako sinua kotiseutusi aluekehitys ja tulevaisuus? Tule mukaan työpajaamme!
🗓️ Syyskuun 12. päivä 2025
⏰ Kello 11:00 – 12:30
Osallistumistiedot blogissamme:
blogs.helsinki.fi/digital-geog...
#Savo #Lappi #Kainuu #Alue #Tulevaisuus #Mikkeli
Kiinnostaako sinua kotiseutusi aluekehitys ja tulevaisuus? Tule mukaan työpajaamme!
🗓️ Syyskuun 12. päivä 2025
⏰ Kello 11:00 – 12:30
Osallistumistiedot blogissamme:
blogs.helsinki.fi/digital-geog...
#Savo #Lappi #Kainuu #Alue #Tulevaisuus #Mikkeli
Reposted by Tuomas Väisänen 📼🧟
It's the humidity that gets you! Here is the Humidity Belt of the US for your viewing pleasure.
September 3, 2025 at 7:26 AM
It's the humidity that gets you! Here is the Humidity Belt of the US for your viewing pleasure.
Reposted by Tuomas Väisänen 📼🧟
Below is my new post about our Three Stages of Religious Decline paper (www.nature.com/articles/s41...).
We argue that a similar process of decline affects countries on every populated continent, including countries in which Christianity, Islam, Buddhism or Hinduism is the largest religion.
A🧵
We argue that a similar process of decline affects countries on every populated continent, including countries in which Christianity, Islam, Buddhism or Hinduism is the largest religion.
A🧵
How religion declines around the world
A country’s religious affiliation tends to decline in three transitional stages that unfold across generations, a new paper using Center data proposes.
www.pewresearch.org
September 2, 2025 at 5:16 PM
Below is my new post about our Three Stages of Religious Decline paper (www.nature.com/articles/s41...).
We argue that a similar process of decline affects countries on every populated continent, including countries in which Christianity, Islam, Buddhism or Hinduism is the largest religion.
A🧵
We argue that a similar process of decline affects countries on every populated continent, including countries in which Christianity, Islam, Buddhism or Hinduism is the largest religion.
A🧵
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!
It was my first time at #ERSA and hopefully one of many to come!
September 2, 2025 at 6:56 AM
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!
It was my first time at #ERSA and hopefully one of many to come!
Continuing with #CrossBorder research at #ERSA2025 is Elias Günther presenting his work on data issues in crossborder studies conducted in #CrossGov, an #ESPON project.
August 28, 2025 at 2:23 PM
Continuing with #CrossBorder research at #ERSA2025 is Elias Günther presenting his work on data issues in crossborder studies conducted in #CrossGov, an #ESPON project.