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Migration00:53

Migration

Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
Distributions to Estimate Population Parameter01:26

Distributions to Estimate Population Parameter

The accurate values of population parameters such as population proportion, population mean, and population standard deviation (or variance) are usually unknown. These are fixed values that can only be estimated from the data collected from the samples. The estimates of each of these parameters are sample proportion, the sample mean, and sample standard deviation (or variance). To obtain the values of these sample statistics, data are required that have particular distribution and central...
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Selected Data About Geographic Locations

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Mechanistic models are utilized in individual analysis using single-source data, but imperfections arise due to data collection errors, preventing perfect prediction of observed data. The mathematical equation involves known values (Xi), observed concentrations (Ci), measurement errors (εi), model parameters (ϕj), and the related function (ƒi) for i number of values. Different least-squares metrics quantify differences between predicted and observed values. The ordinary least squares (OLS)...
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Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling
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Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling

Published on: July 4, 2007

Estimating preferences for local public services using migration data.

Matz Dahlberg1, Matias Eklöf, Peter Fredriksson

  • 1Uppsala University, Sweden.

Urban Studies (Edinburgh, Scotland)
|March 2, 2012
PubMed
Summary

High spending on childcare attracts people to communities, while high local taxes deter them. This study uses Swedish microdata to analyze community choice factors, including public services and taxes.

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Area of Science:

  • Economics
  • Public Policy
  • Urban Studies

Background:

  • Community choice is influenced by local public services and taxation.
  • Understanding these factors is crucial for regional planning and development.

Observation:

  • Swedish microdata was used to model community choice as a discrete selection process.
  • The study analyzed the impact of local public service spending and tax levels on migration patterns.

Findings:

  • Increased spending on childcare significantly attracts new residents, given existing tax levels.
  • High local taxes were found to deter potential migrants.
  • The impact of spending on education and elderly care on community choice was less conclusive.
  • Employing a mixed logit model, which relaxes the independence of irrelevant alternatives assumption, significantly altered the study's results.

Implications:

  • Local governments can leverage public service investments, particularly in childcare, to influence community growth.
  • Taxation policies play a critical role in attracting or deterring residents.
  • Advanced econometric models provide deeper insights into complex choice behaviors.