পদ্ধতির তুলনা করুন
নির্বাচিত পদ্ধতিগুলো পাশাপাশি পর্যালোচনা করুন; যে সারিগুলোয় পার্থক্য আছে সেগুলো চিহ্নিত করা হয়।
| মাইগ্রেশন মডেল (পুশ-পুল / মাল্টিরিজিওনাল)× | কোহর্ট-কম্পোনেন্ট জনসংখ্যা অভিক্ষেপ× | |
|---|---|---|
| ক্ষেত্র | জনমিতি | জনমিতি |
| পরিবার≠ | Regression model | Process / pipeline |
| উদ্ভবের বছর≠ | 1966 | 2001 |
| প্রবর্তক≠ | Everett Lee | Preston, Heuveline & Guillot |
| ধরন≠ | Theoretical-quantitative migration framework | Demographic projection pipeline |
| মৌলিক উৎস≠ | Lee, E. S. (1966). A theory of migration. Demography, 3(1), 47–57. DOI ↗ | Preston, S. H., Heuveline, P., & Guillot, M. (2001). Demography: Measuring and Modeling Population Processes. Blackwell. ISBN: 978-1-557-86451-2 |
| অপর নাম | Push-Pull Migration Theory, Multiregional Migration Model, Lee Migration Framework, Göç Modelleri | Cohort-Component Method, Component Method of Population Projection, Age-Sex-Specific Population Projection, Kohort-Bileşen Projeksiyonu |
| সম্পর্কিত | 3 | 3 |
| সারসংক্ষেপ≠ | Migration models are quantitative frameworks for explaining and forecasting population movement between geographic units. Lee's (1966) push-pull theory classifies factors at origin and destination into positive and negative forces, modulated by intervening obstacles. Widely used by demographers, regional planners, and policy researchers to project labor mobility, refugee flows, and urbanization trends across national and subnational geographies. | Cohort-Component Projection is the standard demographic method for forecasting future population size and age-sex structure by explicitly tracking births, deaths, and migration for each age-sex cohort across discrete time steps. Systematically formalized in the textbook literature by Preston, Heuveline, and Guillot (2001), the method builds on foundational actuarial and demographic work dating to the early twentieth century and remains the workhorse technique used by national statistical offices and international organizations worldwide. |
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