Showing posts with label Migration. Show all posts
Showing posts with label Migration. Show all posts

Friday, July 6, 2018

Chart of the day: The rich cultural diversity of 200 Years of US immigration

The accumulated history of US immigration visualized as rings in a growing tree trunk. The chart was created by Pedro M. Cruz and John Wihbey using IPUMS data. It's the first time I see migration data depicted in this way and it does a really terrific job drawing attention to composition diversity and population history.

UPDATE: Leah Boustan has just drawn my attention on Twitter for an important shortcoming of this cart. Leah has rightly pointed that:
"This graphic is great for visualizing changes in composition of immigrant flow to US over time but obscures dramatic fluctuations in magnitude. ~1 mil immigrants entered per year in 1910, down to 100k by 1930 — yet the concentric circles makes it seem like entry grows over time"


Monday, January 15, 2018

Tuesday, October 17, 2017

Migrating researchers are cited the most

This is according to a recent paper published in Nature. The authors analyzed 14 million papers published between 2008 and 2015 by nearly 16 million individual authors. Around 4% of those authors - more than 595K were considered to be “mobile,” meaning they had affiliations with academic institutions in more than one nation between 2008 and 2015. 

The study looks very interesting throughout. Here are only two of the main results:
  • "[...] mobile scholars have about 40% higher citation rates, on average, than non-mobile ones"
  • "Regardless of region, mobility pays in terms of citations. Across all regions, mobile scholars are more highly cited than their non-mobile counterparts. The advantage varies by region. Mobile North Americans see only a 10.8% boost in citations over their non-mobile colleagues. For Eastern European scholars, the gulf is 172.8%."
I thank Tim Schwanen for the pointer.

Thursday, June 15, 2017

Mexicans didn’t cross the US border. The border crossed them


Carlos Goes pointed me to this short piece in The Economist:
"... communities have proved more durable than borders. The counties with the highest concentration of Mexicans (as defined by ethnicity, rather than citizenship) overlap closely with the area that belonged to Mexico before the great gringo land-grab of 1848."
For the most part, Mexicans didn’t cross the US border. The border crossed them.


Thursday, March 2, 2017

Special issue on Human migration and refugees

Nature has a new special issue on migration and refugees (via Nicolsa Perra).

The United Nations has declared that the number of displaced people has surged to unprecedented numbers. But a close examination of data reveals that current flows are just as high as in they were in the 1990s. Because it is difficult to track refugees, official data and statistics must be handled with care, and yet misleading reports are creating unjustified fears about refugees.



source: UNHCR via Nature

Sunday, April 24, 2016

Friday, February 5, 2016

Historical international immigration to the US 1850-2010

John Weeks points out to this interactive map of international immigration to the US, based on population census data (1850 - 2010) .

This is probably one of the nicest dataviz of migration patterns I've seen and yet this is just one piece in a much broader project to build an atlas of the US History at the Uni. of Richmond.




Friday, September 4, 2015

Where Are the Syrian Refugees Today?

Hans Rosling (aka the Mick Jagger of statistics) in an informative three-minute video about the Syrian Refugees.

Saturday, August 1, 2015

Some Demographic Assorted Links

  1. The UN has recently released the 2015 Revision of World Population Prospects (via Bernardo Queiroz)

  2. Cutting edge research behind new population projections

  3. Can Demography Affect Inflation and Monetary Policy? (via MR)

  4. Which countries have the most immigrants?

  5. There are now at least two good open access journals in demography/population studies. The well known Demographic Research (twitter) , and the new International Journal of Population Studies (twitter)

  6. The new Institute for Asian Demographic Research, in Shanghai (via Emilio Zagheni)

  7. In celebration to World Population Day (11th of July), Springer and BioMed have made freely available a selection of free articles that investigate the consequences of the ever increasing population on health, migration and the environment. These papers will be freely available until September 10, 2015

  8. Nice piece in the NYT on the The Unrealized Horrors of Population Explosion

  9. A great series of GIFs showing demographic changes in different counties (ht Conrad Hackett)


[image credit: Laird Research]

Friday, July 10, 2015

ReDesigning the Global Map of Refugees

A couple of weeks ago, I wrote a post about the new UN annual report on forced migration and refugees and how the guys at the NYT (S.Peçanha and T.Wallace) did a great job in visualizing the data from the report. As a short update to that post, I would like to point out how the same dataset can be visualized in quite different ways. I highlight here only two other data visualization projects based on the same data set and which could be inspiring to other people working with flows data.

The first project is the Global Flows of Refugees, where Nikola Sander and Ramon Bauer have used interactive circular plots to explore refugee flows between countries, regions, etc. The plot is quite effective in showing how flow sizes and origin-destinations change from 2013 to 2014.


The second dataviz comes form the Refugee Project, which brings some geographical context and more historical information on forced migration year by year since 1975. It was designed by Ekene Ijeoma and the team at Hyperakt. 


Sunday, June 21, 2015

Mapping the migration of displaced people

The United Nations High Commissioner for Refugees (UNHCR) published this month their annual report on Global Trends of forced migration and refugees.



The figures are staggering.
"Nearly 60 million people are displaced around the world because of conflict and persecution, the largest number ever recorded by the United Nations. About 14 million of those fled in 2014, according to a report released this week." 
"About 11.6 million Syrians have been displaced, nearly half of Syria’s entire population."

Origin-Destination Flows of Refugees
[image credit: Sergio Peçanha and Tim Wallace, NYT]



85 percent of all refugees are living in this area
[image credit: Sergio Peçanha and Tim Wallace, NYT]