Tatu Leppämäki
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tadusko.bsky.social
Tatu Leppämäki
@tadusko.bsky.social
98 followers 180 following 17 posts
PhD researcher @digigeolab.bsky.social, geographer, dog enjoyer.

tadusko@mstdn.social over on 🦣
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tadusko.bsky.social
Tatu Leppämäki @tadusko.bsky.social · Mar 28
🚨 NEW ARTICLE 🚨
How many photos are uploaded to Flickr? Where? By who? Why does any of it matter? We explore the rise and fall of #Flickr in this @digigeolab.bsky.social paper by yours truly, @vuoggis.bsky.social, Johanna Eklund, Anna Hausmann & @tuulitoivonen.bsky.social out now!
buff.ly/0hJjPsm
Distribution of the use of Flickr. Three heat maps that show globes roughly centered in Europe and Africa, South-East Asia and the Americas. Use is centered in Europe and North America, and urban areas.
Reposted by Tatu Leppämäki
digigeolab.bsky.social
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...
October 27, 2025 at 10:09 AM
Reposted by Tatu Leppämäki
hponka.bsky.social
Kuvassa Iltalehden evästekumppanit silloin, kun olivat vielä vapaaehtoisia.

Kirjoitin blogiin, mikä kaikki Iltalehden evästekäytännössä on pielessä:

Iltalehden suostu tai maksa -malli asettaa lukijat kohtuuttomaan asemaan

harto.wordpress.com/2025/10/21/i...

#tietosuoja #journalismi
October 21, 2025 at 7:29 PM
Reposted by Tatu Leppämäki
digigeolab.bsky.social
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...
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
Reposted by Tatu Leppämäki
digigeolab.bsky.social
We are very happy to congratulate our very own @ollejarv.bsky.social for receiving the Research Council of Finland Award on his work on #CrossBorder #Mobility #Transnationalism #Segregation and #NatureRecreation using #BigData such as #SocialMedia and #MobilePhone data.
May 20, 2025 at 11:08 AM
Reposted by Tatu Leppämäki
geohelsinkiuni.bsky.social
Struggling with your PhD synopsis? ✍️ Try this - The reverse-order approach! 📚🧠

@tuulitoivonen.bsky.social and @digigeolab.bsky.social have been using the reverse-order approach to structure article-based PhD synopses — and it works!

🔗 Read the full story here: www.nature.com/articles/d41...
Why you should write your PhD thesis backwards
By considering the central statement of your entire PhD, you can structure your writing around it, says Tuuli Toivonen.
www.nature.com
May 17, 2025 at 12:03 PM
Reposted by Tatu Leppämäki
digigeolab.bsky.social
Next up is @tadusko.bsky.social presenting his work on the rise and fall of Flickr and use of its data in geographical analyses at #LBS2025 conference.
Tatu presents his work on using Flickr for geographical analyses and whether it is actually a good idea after all. Tatu showing how the popularity of Flickr has diminished but research using Flickr data has increased.
May 8, 2025 at 12:54 PM
Reposted by Tatu Leppämäki
digigeolab.bsky.social
Our amazing Leyi Xu presents her work on place modeling using Place2Vec to capture euclidean and semantic aspects of POI information at #LBS2025
Leyi explaining the methodology related to assessing semantic similarity of points-of-interest.
May 8, 2025 at 7:24 AM
Reposted by Tatu Leppämäki
digigeolab.bsky.social
Our brilliant @matabatchi.bsky.social is presenting his work on quantifying the role of nature in tourism on global and regional scales at #LBS2025.
Matti presenting his results from the Canary Islands. Matti presenting his work on global flows of nature-based tourism.
May 8, 2025 at 6:54 AM
Reposted by Tatu Leppämäki
jurgenpfeffer.bsky.social
Have you ever asked yourself about the overall extent of TikTok? Here some numbers from "Just Another Hour on TikTok" - Great compliment to @bendavidsteel.bsky.social for this data collection effort!
w/ @miriamschirmer.bsky.social & Derek Ruths
arxiv.org/abs/2504.13279
April 21, 2025 at 5:09 PM
tadusko.bsky.social
Oikeutettu etu on 50-50: se joko on tai ei ole. Tällainen light-versio suostumuksesta on ikävän yleinen, mutta härski temppu varsinkin valtionyhtiöltä.
jussipseppala.bsky.social Jussi Seppälä @jussipseppala.bsky.social · Apr 15
Kannattaa käydä tsekkaamassa Oma Postin asetukset. Ovat lisänneet tuollaisen kohdan, joka on oletuksena päällä.
April 18, 2025 at 6:17 AM
Reposted by Tatu Leppämäki
waeiski.bsky.social
My dear fellow researchers in #America and elsewhere!

If you are in the midst of finding a new #academic home and securing new #research #funding the Research Council of Finland is preparing a large funding call to cover the period from 2026 to 2030.

www.aka.fi/en/about-us/...
#science #phd
RCF preparing call for universities to invite foreign researchers to Finland
The Research Council of Finland (RCF) is planning a new funding call to help universities recruit international experts to Finland. The call would be part of the RCF funding scheme that strengthens un...
www.aka.fi
April 15, 2025 at 7:33 PM
Reposted by Tatu Leppämäki
dawn.fi
Posti alkaa profiloimaan asiakkaitaan

OmaPostin käyttöehdot muuttuvat ja Posti alkaa profiloimaan asiakkaitaan mm. sen mukaan keneltä saat paketteja ja kuinka usein.

Profilointia käytetään mm. mainontaan. Ohjeissamme kerromme, miten profiloinnista voi kieltäytyä.

#posti #omaposti #uutiset
Posti alkaa profiloimaan käyttäjiään - näin estät
Posti alkaa profiloimaan OmaPosti -palvelun käyttäjiä ja kohdentaa luodun profiilin perusteella mm. mainoksia omista palveluistaan. Profiloinnista voi kieltäytyä asetusten kautta, mutta se on oletukse...
dawn.fi
April 15, 2025 at 1:41 PM
Reposted by Tatu Leppämäki
tuulitoivonen.bsky.social
Our new Associate Professor in #geography @geohelsinkiuni.bsky.social, Johanna Eklund 💎, giving her inaugural keynote talk at the Kumpula Faculty Day of @helsinki.fi 🤩

Johanna asks what actually works in #conservation and how this could be tested with #counterfactual approaches 💚
April 11, 2025 at 6:33 AM
tadusko.bsky.social
A cool new master's thesis on #mountainbiking in Finnish Lapland's #nationalparks. Mikko used #Strava and #Ridewithgps data to explore whether these sources accurately reflect where and when people like to bike. Could they even aid in managing these areas? 👇
digigeolab.bsky.social Digital Geography Lab @digigeolab.bsky.social · Apr 3
📢 New master's thesis finalised!

"Activity tracking data for protected area visitor monitoring: A case study of mountain biking using Strava Metro", by Mikko Kangasmaa 😍

🎓 Find the thesis here: helda.helsinki.fi/items/73ae87...
📄 Find Mikko's summary here: blogs.helsinki.fi/digital-geog...
April 4, 2025 at 11:36 AM
Reposted by Tatu Leppämäki
waeiski.bsky.social
Are doing #research using #Flickr data? Are you aware of the drawbacks?

Check out this cool article where researchers critically assess the use of Flickr #SocialMedia data in research on #conservation and #recreation in #nature. Key insights for #NationalPark and #ProtectedArea management.
tadusko.bsky.social Tatu Leppämäki @tadusko.bsky.social · Mar 28
🚨 NEW ARTICLE 🚨
How many photos are uploaded to Flickr? Where? By who? Why does any of it matter? We explore the rise and fall of #Flickr in this @digigeolab.bsky.social paper by yours truly, @vuoggis.bsky.social, Johanna Eklund, Anna Hausmann & @tuulitoivonen.bsky.social out now!
buff.ly/0hJjPsm
Distribution of the use of Flickr. Three heat maps that show globes roughly centered in Europe and Africa, South-East Asia and the Americas. Use is centered in Europe and North America, and urban areas.
March 31, 2025 at 7:05 AM
Reposted by Tatu Leppämäki
tadusko.bsky.social
🚨 NEW ARTICLE 🚨
How many photos are uploaded to Flickr? Where? By who? Why does any of it matter? We explore the rise and fall of #Flickr in this @digigeolab.bsky.social paper by yours truly, @vuoggis.bsky.social, Johanna Eklund, Anna Hausmann & @tuulitoivonen.bsky.social out now!
buff.ly/0hJjPsm
Distribution of the use of Flickr. Three heat maps that show globes roughly centered in Europe and Africa, South-East Asia and the Americas. Use is centered in Europe and North America, and urban areas.
March 28, 2025 at 2:36 PM
tadusko.bsky.social
🚨 NEW ARTICLE 🚨
How many photos are uploaded to Flickr? Where? By who? Why does any of it matter? We explore the rise and fall of #Flickr in this @digigeolab.bsky.social paper by yours truly, @vuoggis.bsky.social, Johanna Eklund, Anna Hausmann & @tuulitoivonen.bsky.social out now!
buff.ly/0hJjPsm
Distribution of the use of Flickr. Three heat maps that show globes roughly centered in Europe and Africa, South-East Asia and the Americas. Use is centered in Europe and North America, and urban areas.
March 28, 2025 at 2:36 PM
Reposted by Tatu Leppämäki
waeiski.bsky.social
🚨🌍 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
Schematic of the workflow in the article. Leftmost panel shows a representation of the input data with high diversity in the types of place names resulting from typographical errors, character encoding errors, language-specific spellings and use of different scripts. The centre panel shows the general workflow from preprocessing to geocoding and finally to validation. The rightmost panel shows the spatially enriched Erasmus+ mobility data on a map with edge-bundled flows representing different intensities of student mobility across NUTS 3 regions in Europe.
March 26, 2025 at 3:41 PM
Reposted by Tatu Leppämäki
digigeolab.bsky.social
Huge congratulations to our brilliant @ollejarv.bsky.social who has won the prestigious Research Council of Finland Award for his research on #CrossBorder #mobility! 🎉

A well-deserved award! 🎉🎉

blogs.helsinki.fi/digital-geog...

#tutkimus #research #tiede #science #SuomenAkatemia #AcademyOfFinland
Olle Järv wins the prestigious Research Council of Finland Award – Digital Geography Lab blog
blogs.helsinki.fi
March 12, 2025 at 3:34 PM
Reposted by Tatu Leppämäki
blender.org
Congratulations to @gintszilbalodis.bsky.social and the entire Flow film crew for the Academy Award win!

Flow is the manifestation of Blender’s mission, where a small independent team is able to create a story that moves audiences worldwide.

Thank you for the shout out! 🧡 #b3d
Flow
March 3, 2025 at 10:47 AM
Reposted by Tatu Leppämäki
tmonkey718.bsky.social
“Data doesn’t lie.” Spoken only by someone who has never worked with data in their life.
mmitchell.bsky.social Margaret Mitchell @mmitchell.bsky.social · Feb 24
🗞️ Today in Government Officials Who Don't Understand how Data Processing Works (And Are Allowing it to be Used to Harm Americans).
Let's take a look at the claim "data doesn't lie", shall we? 🧵
atrupar.com Aaron Rupar @atrupar.com · Feb 24
Johnson: "Elon's cracked the code. He's now inside these agencies. He's created these algorithms that are constantly crawling through the data & as he told me in his office, data doesn't lie. We're gonna be able to get the information. We're gonna be able to transform the way federal govt works."
February 24, 2025 at 7:17 PM
Reposted by Tatu Leppämäki
waeiski.bsky.social
Hey #GeoSky and everyone interested in #geography #geospatial #research #giscience #tutkimus #tiede #maantiede, here is the @digigeolab.bsky.social Starter Pack of current members and alumni. We do research on #accessibility #mobility #conservation and #segregation.
bsky.app/start/did:pl...
January 24, 2025 at 3:06 PM
Reposted by Tatu Leppämäki
digigeolab.bsky.social
🚲 Cycle Through a Virtual City: Join the GREENTRAVEL VR Study 🌳

📍 Location: University of Helsinki, City Centre Campus
🕒 Duration: About 1.5 hours
📅 When: February to April 2025

➡️ Learn more here: https://buff.ly/4h38xgP

➡️Book your participation time here: https://buff.ly/4g5owd8
January 21, 2025 at 12:04 PM
Reposted by Tatu Leppämäki
digigeolab.bsky.social
🚨Fresh from the lab🚨

Robert Klein's first #PhD article, "Temporal variation in travel greenery across 86 cities in Europe", is out! 🌳🚴🚶

Residential areas are greener. Seasonality has a crucial role. Temporal variation of #greenery often overlooked in research and policies.

doi.org/10.1016/j.uf...
Figure 3 from the manuscript. Top two rows show maps displaying the residential and travel greenery and its spatial distribution in Helsinki, London and Las Palmas. Below the maps are bar graphs showing study cities sorted by NDVI difference between residential and travel greenery
November 14, 2024 at 8:31 AM
Reposted by Tatu Leppämäki
stilgherrian.com
Meanwhile Bing’s AI is denying the existence of Australia.
Bing Search screenshot. Does Australia exist No According to 2 sources timesofahmad.blogs... Well, the fact is that Australia doesn't really exist. Everything you have ever heard about it was made up, and any pictures of it you have seen were faked by the government. I am sure you have even talked to people on the internet who claim to be from Australia. They are really secret government agents.
November 22, 2023 at 2:40 AM