Ronald Visser
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ronaldvisser.bsky.social
Ronald Visser
@ronaldvisser.bsky.social
Archaeology, Dendrochronology, Roman Archaeology, Digital Archaeology, Teaching, Data Science, Open Science

Works at Saxion University of Applied Sciences

https://orcid.org/0000-0001-6966-1729

https://akademienl.social/@RonaldVisser
Vandaag in @naturalis.bsky.social geweest voor de leuke boekpresentatie van het nieuwe boek van Valérie Trouet. Zij was in gesprek met één van de auteurs Marta Domínguez Delmás over de mooie verhalen uit het prachtige boek!

www.lannoo.be/nl/de-ban-va...

Een aanrader voor de verlanglijstjes….
November 26, 2025 at 6:02 PM
Genoten van een gaaf concert van de al 40 jaar oude Young Gods
November 19, 2025 at 10:35 PM
Lauch of the local chaper of @caaint.bsky.social in Austria during the #CHNT conference in Vienna!
Nice to be there as the chair of @caanlfl
See for all CAA Chapters: caa-international.org/national-cha...
November 3, 2025 at 4:41 PM
Historische poster (1941-1943) voor alle partijen die vinden dat het bestrijden van antifascisme belangrijker is dan een democratische samenleving!
(Bron in alt text)
October 23, 2025 at 7:39 AM
Dit jaar zijn we weer met Saxion University of Applied Sciences in Hessen voor de jaarlijkse internationale Summer Academy met een groep studenten en docenten van de opleiding Archeologie.
Gisteren kwam de Duitse televisie (ZDF) op bezoek en hebben dit tv-item gemaakt!

www.zdf.de/nachrichten/...
September 12, 2025 at 12:15 PM
The holiday has started and I am in the great city of Groningen to present "Text Mining for Urban Farming" at the IWGP-conference, based on our book: www.cultureelerfgoed.nl/publicaties/...
@AnjaFischer
Today's presentation: ronaldvisser.github.io/TextMiningUr...
#openscience #archaeology
July 21, 2025 at 8:20 AM
Kraftwerk live at Paleis Soestdijk! Wonderful show
July 13, 2025 at 6:34 AM
On Monday May 26 we will host a small symposium on current issues in #dendrochronology and #archaeology with many great speakers:
www.archonline.nl/may-2025/tre...
May 15, 2025 at 8:55 PM
My dissertation: "Relating Roman Rings: An interdisciplinary study using archaeology, data science and tree rings to understand timber provision in the German Provinces of the Roman Empire" is now available online: doi.org/10.5463/thes... #openaccess #openscience
April 29, 2025 at 8:42 AM
Today I received the printed copies of my dissertation. Getting more and more ready to defend this at the VU on the 26th of May at 15:45: vu.nl/nl/agenda/20...
April 25, 2025 at 8:16 AM
De NOS-redactie is erg creatief met taal, maar promovendus is toch echt een academische begrip! Nou ja, tenzij voetballers tegenwoordig een proefschrift moeten schrijven om naar een andere divisie te kunnen promoveren...

nos.nl/l/2564518
April 22, 2025 at 5:20 AM
Finally! I will defend my dissertation: "Relating Roman Rings. An interdisciplinary study using archaeology, data science and tree rings to understand timber provision in the German Provinces of the Roman Empire" at the VU in Amsterdam on May 26 at 15:45
February 14, 2025 at 4:15 PM
Good morning this beautiful day!
January 11, 2025 at 8:09 AM
My 2024 in code using https://git-wrapped.com

Not surprised that #RStats is my top, but nice to see this overview of my activities on #github (https://github.com/RonaldVisser)
December 23, 2024 at 7:43 AM
Saw this beautiful foamy beech today in the forest. This is caused by stemflow, water runoff along the stem of the #tree, and the chemicals on the bark the water collects, creating a soapy foam.
December 8, 2024 at 7:44 PM
Transport of bulk materials such as #wood in the #Roman period was most likely done in these large barges, transporting timber over short and sometimes long distances (> 100 km). How do we now this? Answer:
#Archaeology, #Dendrochronology and #DataScience, see e.g. https://tinyurl.com/496yfzz2
December 7, 2024 at 8:19 AM
Goede opkomst!
Stop de bezuinigingen!
November 25, 2024 at 12:26 PM
Op naar Den Haag om te protesteren tegen de bezuinigingen op het #hoger #onderwijs! Kabinet wees zuinig op onze opleidingen in het #HBO en #WO en bezuinig hier niet op!
November 25, 2024 at 10:26 AM
November 25, 2024 at 6:34 AM
There is little time left to submit your abstract for #CAA2025 in Athens, do you have a minion to share for "S5: Our Little Minions pt. VI: small tools with major impact" go to:
#S5-list/#S5" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link" target="_blank" rel="noopener" data-link="bsky">https://2025.caaconference.org/call-for-papers/session-list/#S5
or something else?
See also: https://littleminions.link/
November 23, 2024 at 7:48 AM
Happy #GISDay 🗺️
Spatial research is great with #opensource software such as @qgis.fosstodon.org.ap.brid.gy, but to make it #reproducible #rstats can be very helpful, for example in relation to transport of wood in the Roman period: www.researchgate.net/publication/..., code: doi.org/10.5281/zeno...
November 20, 2024 at 3:12 PM
In 2014 & 2015 we excavated a WW2-bomber in Hesse with an international group of students. #archaeology is nice, but it was great to do it in peace and how stories from eyewitnesses and relatives of the crew came together! An amazing experience, especially the commemoration
doi.org/10.1080/1574...
November 18, 2024 at 5:05 PM
After noticing having 999 followers, I made a screenshot and right after that another follower showed up, reaching 1k. Perfect timing :)
November 17, 2024 at 8:47 AM
Assuming that new followers are interested in #archaeology and #dendrochronology, it is nice to reshare this #openaccess paper on #Roman barges, in which we used #network #analysis to assess the #provenance of the #wood and find evidence for ships built in the same shipyard doi.org/10.1163/2772...
November 16, 2024 at 9:10 AM
That is indeed a cool tool! Thanks for the tip, @flintdibble.bsky.social !

I tried my Google Scholar: scholar.google.com/citations?hl...
with the #rstats #rshiny tool: shiny.rcg.sfu.ca/u/rdmorin/sc...
February 8, 2024 at 6:43 AM