Rafael H. M. Pereira 🚑 Urban Demographics
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urbandemog.bsky.social
Rafael H. M. Pereira 🚑 Urban Demographics
@urbandemog.bsky.social
7K followers 890 following 170 posts

Researcher Ipea Brazil | Visiting prof @geo_uoft | PhD @TSUOxford | Structured procrastination on Cities, Urban mobility, Accessibility, Equity, Data science, R. About: www.urbandemographics.org/

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Economics 25%
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urbandemog.bsky.social
Rafael H. M. Pereira 🚑 Urban Demographics @urbandemog.bsky.social · May 19
New preprint where we propose "Rethinking Congestion as Lost Access"
πŸ“‘ osf.io/fjdbs_v2 Short 🧡!

urbandemog.bsky.social
Rafael H. M. Pereira 🚑 Urban Demographics @urbandemog.bsky.social · 10h
- Site do AOP-Lab www.ipea.gov.br/acessooportu...
- Site da premiação www.gov.br/cidades/pt-b...
Acesso a Oportunidades
Pesquisador (Ipea)
www.ipea.gov.br

urbandemog.bsky.social
Rafael H. M. Pereira 🚑 Urban Demographics @urbandemog.bsky.social · 10h
Um destaque do trabalho é que gente gera estimativas em alta resolução espacial de acesso a postos de emprego, serviços públicos de saúde, educação e proteção social por modo de transporte para as maiores cidades do Brasil. Mais info no site abaixo :)

urbandemog.bsky.social
Rafael H. M. Pereira 🚑 Urban Demographics @urbandemog.bsky.social · 10h
O AOP-Lab Γ© um grupo de pesquisa e de desenvolvimento de ferramentas computacionais e de dados para acessibilidade espacial e planejamento urbano, com foco em questΓ΅es de desigualdades sociais e de mobilidade urbana sustentΓ‘vel. +

urbandemog.bsky.social
Rafael H. M. Pereira 🚑 Urban Demographics @urbandemog.bsky.social · 10h
O Ministerio das Cidades criou ano pasado o PrΓͺmio Bicicleta Brasil p/ reconhecer projetos que incentivem o uso da bicicleta e a melhoria das condiçáes de mobilidade urbana. Esse ano, o Lab de Acesso a Oportunidades do @ipeaonline recebeu o prΓͺmio de 1o lugar na categoria ConcientizaçãoπŸ₯³

Reposted by Rafael H. M. Pereira

ahlfeldt.bsky.social
Gabriel M Ahlfeldt @ahlfeldt.bsky.social Β· 18h
Ever wondered what housing value proxy for sales prices to use? Long story (in our @cesifo.org DP) short: Assessed values are good for quantification of QSMs. List prices better for hedonic valuation using panel identification. www.ifo.de/en/cesifo/pu... @hans-koster.bsky.social

Reposted by Robb Willer, Rafael H. M. Pereira, Robert C. Richards , and 1 more

angelamli.bsky.social
Angela Li @angelamli.bsky.social Β· 2d
πŸ‘‰ Our new paper uses daily mobility data to show that spatial isolation is much more common today among those living in advantaged neighborhoods than the converse.

πŸ‘©πŸ»β€πŸ’» Lots of massive data wrangling and careful assumptions about mobility data needed - but check it out here! doi.org/10.1177/0042...
Abstract for "The truly isolated: Spatial isolation of advantage in the United States" by Shannon Rieger, Angela Li, and Patrick Sharkey, published at Urban Studies

Reposted by Rafael H. M. Pereira

abdirashid.bsky.social
Abdirashid Dahir @abdirashid.bsky.social Β· 3d
Excited to share that the 1st paper of my dissertation has been published! In this study, we developed and applied the novel JTEV framework in Columbus, OH. Thankful to Jeffrey Bielicki, Jeffrey Jacquet and my PhD advisor @huyentkle.bsky.social

Link: authors.elsevier.com/c/1m7I87tZ6a...

urbandemog.bsky.social
Rafael H. M. Pereira 🚑 Urban Demographics @urbandemog.bsky.social · 3d
@filipecampante.bsky.social has two very interesting papers related to this:
- www.aeaweb.org/articles?id=...
- www.aeaweb.org/articles?id=...
Capital Cities, Conflict, and Misgovernance
(July 2019) - We investigate the links between capital cities, conflict, and the quality of governance, starting from the assumption that incumbent elites are constrained by the threat of insurrection...
www.aeaweb.org

Reposted by Rafael H. M. Pereira

ecioxford.bsky.social
Environmental Change Institute, University of Oxford @ecioxford.bsky.social Β· 6d
New Nature Energy @nature.com study shows the UK can reach net zero faster, cheaper & with fewer risks by cutting energy demand.

ECI’s Prof Christian Brand @profchristianbrand.bsky.social led the transport analysis in this unique gov–research collaboration.

➑️: www.eci.ox.ac.uk/news/less-en...

urbandemog.bsky.social
Rafael H. M. Pereira 🚑 Urban Demographics @urbandemog.bsky.social · 7d
I would add WebGL-based visualization libraries (e.g. #deckgl and #mapgl). They are not exactly super new but they're really centraly in how spatial data science has changed over the past 10-ish years.

ps. #GeoParquet, and #DuckDB + spatial ! would also be at the top of my list!
jakubnowosad.com Jakub Nowosad @jakubnowosad.com Β· 7d
What are the most exciting trends you’re seeing in spatial data science lately?
Some of mine:

- New file formats (e.g. #GeoParquet)
- Geospatial DBs (e.g. #DuckDB + spatial)
- Global discrete grids

What would you add?

#Geospatial #GISchat #RSpatial #GeoPython
A discrete global grid (DGG) is a mosaic that covers the entire Earth’s surface. Mathematically it is a space partitioning.

Reposted by Rafael H. M. Pereira

jakubnowosad.com
Jakub Nowosad @jakubnowosad.com Β· 7d
What are the most exciting trends you’re seeing in spatial data science lately?
Some of mine:

- New file formats (e.g. #GeoParquet)
- Geospatial DBs (e.g. #DuckDB + spatial)
- Global discrete grids

What would you add?

#Geospatial #GISchat #RSpatial #GeoPython
A discrete global grid (DGG) is a mosaic that covers the entire Earth’s surface. Mathematically it is a space partitioning.

Reposted by Rachel S. Franklin

urbandemog.bsky.social
Rafael H. M. Pereira 🚑 Urban Demographics @urbandemog.bsky.social · 9d
Glad to share this paper is now published "A family of accessibility measures derived from spatial interaction principles" journals.plos.org/plosone/arti...
A delightful colab led by @soukhova.bsky.social !

urbandemog.bsky.social
Rafael H. M. Pereira 🚑 Urban Demographics @urbandemog.bsky.social · 10d
Em minha defesa, recomendei pq era onde os taxistas abasteciam. Eu nunca lavei nada lah kkkkk

Reposted by Rafael H. M. Pereira

emitanaka.org
Emi Tanaka @emitanaka.org Β· 10d
Congratulations to my student, Maggie Ma, for publishing her first #rstats package {ggincerta} on CRAN πŸ₯³

Spatial uncertainty visualisation (bivariate, pixel, exceedance, glyph), like {Vizumap}, but fully integrated with ggplot2 -- a much simpler API with all the advantages of the ggplot2 system.
exceedance plot ggplot(nc) + geom_sf(aes(fill = duo_exceed(value, sd))) bivariate plot ggplot(nc) + geom_sf(aes(fill = duo(value, sd))) glyph plot ggplot(nc) + geom_sf_glyph(mapping = aes(v1 = value, v2 = sd)) pixel plot ggplot(nc) + geom_sf_pixel(mapping = aes(v1 = value, v2 = sd))

Reposted by Rafael H. M. Pereira

giswqs.bsky.social
Qiusheng Wu @giswqs.bsky.social Β· 11d
I’m thrilled to share that my new book (Spatial Data Management with DuckDB) is now published! πŸŽ‰

At 430 pages, this book provides a practical, hands-on guide to scalable geospatial analytics and visualization using DuckDB. All code examples are open-source and freely available on GitHub.

Reposted by Lisa W. Fazio, Robert W. Wallace, Rafael H. M. Pereira , and 3 more

mtsw.bsky.social
mtsw @mtsw.bsky.social Β· 11d
A lot of education discourse is at root an inability to decide whether the purpose of our education system is to 1) teach material and measure learning 2) reward students who work hard 3) separate the smart kids (destined for smart guy jobs) from the dumb kids (destined to serve the smart guys)

urbandemog.bsky.social
Rafael H. M. Pereira 🚑 Urban Demographics @urbandemog.bsky.social · 13d
Oficina de acessibilidade espacial com #r5rstats no R hoje na #anpet2025
Material do curso aqui ipeagit.github.io/oficina_aces...

Reposted by Hugo Mercier, Rafael H. M. Pereira, Rebecca Sear

jorgeapenas.bsky.social
Jorge PeΓ±a @jorgeapenas.bsky.social Β· 13d
πŸ“£ Are you a PhD student in the quantitative social sciences interested in interdisciplnary research? Join us at the Toulouse Summer School in Quantitative Social Sciences (25 May-19 Jun 2026) at @tse-fr.eu.

Apply by 15 Dec 2025 πŸŽ“πŸ”

πŸ‘‰ More info + application: www.tse-fr.eu/toulouse-sum...
Toulouse Summer School in Quantitative Social Sciences
www.tse-fr.eu

Reposted by Rafael H. M. Pereira

tasoskitsos.bsky.social
Tasos Kitsos @tasoskitsos.bsky.social Β· 15d
πŸš¨πŸ“£ We have a new paper with Emmanouil Tranos & @levijohnwolf.bsky.social in the Journal of #Economic #Geography linking #internet speeds to #firm level #productivity benefits. There is a 2% productivity boost pulling slowest to fastest speeds across #UK LAs πŸ‘€πŸ‘‡

#geosky
#econsky πŸ“ˆπŸ“‰

shorturl.at/NJ4rE
Fast and furious: the productivity effects of the geography of experienced internet speeds
Abstract. The link between digital technologies and productivity has long intrigued researchers. Key to unpacking this relationship is detailed data connec
shorturl.at