Tootfinder

un_migrations: UN migration stock (2015)
A network of migration between countries, collected by the United Nations. A directed edge gives the flow of migration, and an edge property gives the number of migrants, for each given year and sex. Estimates are presented for 1990, 1995, 2000, 2005, 2010 and 2015 and are available for all countries and areas of the world. The estimates are based on official statistics on the foreign-born or the foreign population.
This network has 232 no…

un_migrations: UN migration stock (2015)
A network of migration between countries, collected by the United Nations. A directed edge gives the flow of migration, and an edge property gives the number of migrants, for each given year and sex. Estimates are presented for 1990, 1995, 2000, 2005, 2010 and 2015 and are available for all countries and areas of the world. The estimates are based on official statistics on the foreign-born or the foreign population.
This network has 232 no…

Just finished "Look on the Bright Side" by Lily Williams and Karen Schneemann. Sequel to "Go With the Flow" about a group of highschool friends who become activists to get their school to stock free mensuration products. I really enjoyed the first book, and this one was also great, with some discussion of LGBTQI issues and a but more focus on romance. As with the first book, there's a layer of explicit pedagogical material included that makes summer scenes a but less natural, but that's fine and useful. As with the first book, it models making & growing past mistakes, which is great.
I find myself drawing a comparison to "Does my Body Offend You?" by Mayra Cuevas. Both deal with highschool friends doing feminist activism to change their schools, by where Cuevas deals more directly with topics like sex, sexual assault, and racism, Williams & Schneemann avoid those topics while still including a lot of the same friendship struggles.
#AmReading

un_migrations: UN migration stock (2015)
A network of migration between countries, collected by the United Nations. A directed edge gives the flow of migration, and an edge property gives the number of migrants, for each given year and sex. Estimates are presented for 1990, 1995, 2000, 2005, 2010 and 2015 and are available for all countries and areas of the world. The estimates are based on official statistics on the foreign-born or the foreign population.
This network has 232 no…

Compositional System Dynamics: The Higher Mathematics Underlying System Dynamics Diagrams & Practice
Xiaoyan Li, Evan Patterson, Patricia L. Mabry, Nathaniel D. Osgood
https://arxiv.org/abs/2509.18475

Compositional System Dynamics: The Higher Mathematics Underlying System Dynamics Diagrams & Practice
This work establishes a robust mathematical foundation for compositional System Dynamics modeling, leveraging category theory to formalize and enhance the representation, analysis, and composition of system models. Here, System Dynamics diagrams, such as stock & flow diagrams, system structure diagrams, and causal loop diagrams, are formulated as categorical constructs, enabling scalable, transparent, and systematic reasoning. By encoding these diagrams as data using attributed C-sets and utili…

un_migrations: UN migration stock (2015)
A network of migration between countries, collected by the United Nations. A directed edge gives the flow of migration, and an edge property gives the number of migrants, for each given year and sex. Estimates are presented for 1990, 1995, 2000, 2005, 2010 and 2015 and are available for all countries and areas of the world. The estimates are based on official statistics on the foreign-born or the foreign population.
This network has 232 no…

un_migrations: UN migration stock (2015)
A network of migration between countries, collected by the United Nations. A directed edge gives the flow of migration, and an edge property gives the number of migrants, for each given year and sex. Estimates are presented for 1990, 1995, 2000, 2005, 2010 and 2015 and are available for all countries and areas of the world. The estimates are based on official statistics on the foreign-born or the foreign population.
This network has 232 no…