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#demography

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Public
Tuomas Väisänen 📼🧟‍♂️

A quick illustrative #map on the implications of using different types of centroids in regional #demography #mobility and #migration studies.

Think about what you are emphasizing.

By using population-weighted centroids, you can emphasize the population perspective in the analysis instead of the geometry, potentially improving your analysis considerably. The distance difference is stronger in sparsely populated and remote regions.

A map of some European countries on the NUTS 3 regional level, where each region contains a geometrically calculated centroid, and a population-weighted centroid. That is, the centremost geographical point of the region. In Northern Europe, the distance difference between the two types of centroids can be hundreds of kilometres, which can have massive implications in studies which use centroids to calculate distance-based metrics. Using the geometric centroid will not provide representative metrics of the region from the perspective of the population. The distance difference in Central European NUTS 3 regions is much less considerable, and the differences are measured in kilometres instead of hundreds of kilometres.
#GIScience#Geospatial#cartography
Public
Marine Predators Chizé Lab

New paper by Ewen Le Scornec et al.

Intrinsic and extrinsic drivers of juvenile survival in emperor penguins

link.springer.com/article/10.1

SpringerLinkIntrinsic and extrinsic drivers of juvenile survival in emperor penguins - Polar BiologyOur understanding of demographic processes is mainly based on the analysis of the adult components of populations. However, juvenile survival is decisive for recruitment, and therefore for the dynamics of populations. Our study aims at understanding the environmental determinants of juvenile survival in the emperor penguin, a species for which this critical phase is poorly known. We used capture-mark-recapture models to leverage 13-years of electronic monitoring of birds tagged as fledglings at Pointe Géologie, Adélie Land. Emperor penguin juvenile survival showed very high interannual variability (0.08 to 0.48), a pattern no longer observed in immatures and adults. Furthermore, we emphasized the importance of body mass on juvenile survival, and which was tightly associated with sea ice extent during the chick rearing period. We also showed that oceanographic conditions (width of the polar front) during the first weeks after fledging are an important predictor of juvenile survival. Our results suggest that the conditions of accessibility and abundance of food resources during this phase of learning to swim and dive play a crucial role in the survival of young penguins. Finally, our study provides new insights into sex-specific differences in survival in this species, which seems to emerge only in adulthood.
#penguins#seabirds#ecology
Public
Acta Sociologica

📣 New paper 🚨
In "Frontiers of self-realisation. How (un)certainty and imaginaries shape fertility intentions in Italy and Norway", against the backdrop of low-fertility, Giacomo Bazzani, Lars Dommermuth, Trude Lappegard and Daniele Vignoli study fertility intentions and uncover a new type of children imaginary as ‘choice, pleasure, and social anchor’.

doi.org/10.1177/00016993241300

#sociology #fertility #demography
@sociology @academicchatter @DemRes @demography

Continued thread
Public
Frédéric D'Astous

🧵 Results of the study "Alternative paths to politics : How young people engage in #politics in Australia" are here -> giwl.anu.edu.au/files/2024-11/

A research paper of the follow up study ( ‘Risky visibility’: the online harassment of queer politicians) is published in the European Journal of Politics and Gender • vol XX • no XX.

The research paper can be found there -> cdn.theconversation.com/static

#Discrimination #Democracy #Harassment #Generations #Demography #Sociology
#Auspol #LGBT #Lgbtiq

Public
Bibliolater 📚 📜 🖋

🔴 **The aging society: Is growth reverting to pre-industrial levels in the 21st century?**

_“In this paper, I have extended the literature in three dimensions, all of which more than counter the negative growth effects of the demographic transition on investment: 1) by showing that fertility transition-induced increase in enrollments into higher education has positive growth payoffs in the future; 2) by bringing ideas production and higher education into the center of the analysis; and 3) by allowing for the endogenous responses of education, innovative activity, investment, and labor force participation to the age structure of the population.”_

Madsen, J.B. (2024) 'The aging society: Is growth reverting to pre-industrial levels in the 21st century?,' Journal of Economic Behavior & Organization, 229, p. 106849. doi.org/10.1016/j.jebo.2024.10.

#OpenAccess #OA #Research #DOI #Demography #Productivity #Education #Economics #Academia #Academics @economics

Public
Bry

"The turning point was 2020, the year of the COVID-19 pandemic, when Alabama had 57,643 births, but 64,779 deaths. The following year saw the trend continue, when the state saw almost 11,000 more people die than were born. The trend has continued every year since."

#demography #publichealthfailure #gop

al.com/news/2025/01/alabama-fa

al · Alabama faces a ‘demographic cliff’ as deaths surpass birthsBy William Thornton | wthornton@al.com
Public
Klaus Pforr

📢 Registration open! Join the 9th European User Conference for EU-Microdata, a forum for research exchange on SILC, LFS, AES, & more. Topics: gender, poverty, health, labor, COVID-19 impacts & beyond. Fee: €120 (€80 students). Open to all. Register here: training.gesis.org/?site=pDeta #sociology #politicalscience #economics #demography #statistics

training.gesis.orgGESIS Training Courses
Public
Bibliolater 📚 📜 🖋

🔴 🇺🇸 **Revisiting the J-Shape: Human Development and Fertility in the United States**

_"As outlined earlier in the article, increasing development might reduce levels of gender inequality and economic uncertainty, which can lead to higher fertility."_

Henrik-Alexander Schubert, Christian Dudel, Marina Kolobova, Mikko Myrskylä; Revisiting the J-Shape: Human Development and Fertility in the United States. Demography 1 December 2024; 61 (6): 1949–1973. doi: doi.org/10.1215/00703370-11680.

#OpenAccess#OA#Research
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