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In 1981 Rogers and Castro proposed the used of model migration schedules as a solution a key data problem limiting the use of the cohort -component model in making subnational population projevtioin devlopng countries.
This book presents the culmination of our collaborative research, going back over 15 years (Rogers & Little, 1994), and for one of us, even longer (Rogers, 1967, 1973). It addresses a dif?cult, yet necessary, area of demographic research: what to do in data situations characterized by irregular, inadequate, or missing data. A common solution within the demographic community has been what is generally referred to as “indirect estimation”. In our work the focus has been on the indirect estimation of migration, and our use of the term “indirect” follows the description given in the 1983 United Nations manual, which de?ned it as “techniques suited for analysis of incomplete or defective demographic data” (United Nations, 1983, p. 1). We wrote this book with a goal to make it accessible to a reader familiar with introductory statistical modeling, at the level of regression and categorical data an- ysis using log – linear models. It is primarily intended to serve as a reference work for demographers, sociologists, geographers, economists, and regional planners.
Over the last two decades there have been numerous profound changes in UK society which have had an impact on the scale, geographies, meaning and experiences of internal migration. Providing a critical appraisal of migration scholarship from the perspective of Geography, reviewing theory, substantive foci and method, this book demonstrates how sub-national migration in the UK gives rise to and reflects new patterns of population, housing, economies and cultures. Each chapter is written by a Population Geographer together with a scholar representing another Human Geography sub-discipline thus providing a cross-disciplinary perspective on a specific aspect of migration. Critically reviewing and setting an agenda for internal migration scholarship from a spatial perspective, this book will be of interest to academics and students of Geography and other disciplines concerned with migration, both within the UK and further afield.
At present there is no unified treatment, drawing together models to allow a consistent and reliable set of migration flows, across countries. This text seeks to do exactly that, potentially improving policies, planning and understanding about migration processes worldwide, via the presentation of migration estimation and modeling techniques. These modeling techniques are explored from both frequentist and Bayesian perspectives. The vital concepts such as missing data and collection methods (and their possible harmonization) are discussed in depth, and there are whole chapters dedicated to both modeling asylum flows and forecasts about the future of international migration.