Selection theory with overlapping generations
نویسندگان
چکیده
منابع مشابه
Overlapping Generations Models with Immigration
In this work we develop overlapping generations models (OLG) which explicitly include immigration. In the following, we propose two general equilibrium models. In a first approach, we investigate the effect of a sudden variation in the number of immigrants on the host country to shed light on the welfare effects of immigration for the various generations of the host country’s population. Subseq...
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The specific feature of the Overlapping Generations Model is that new cohorts are born in every period, live for a number of periods and die. Consequently, at any point in time, society is composed of individuals belonging to the different generations that are currently alive. Because of the demographic structure of the population, no trade involving individuals about to die is possible and hen...
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Search is embeded in an overlapping-generations model. Young people participate a centralized market and a decentralized market sequentially and olds only participates the centralized market. The demographic feature allows analytical tractability. In a series examples, positve inflation rates are Pareto optimal. JEL classification: E31
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Many insects and other arthropods harbor maternally inherited bacteria inducing "cytoplasmic incompatibility" (CI), reduced egg hatch when infected males mate with uninfected females. CI-causing infections produce a frequency-dependent reproductive advantage for infected females. However, many such infections impose fitness costs that lead to unstable equilibrium frequencies below which the inf...
متن کاملInbreeding in populations with overlapping generations.
An inbreeding matrix is defined for populations with overlapping generations. In the short term it can be expressed in terms of a matrix specifying the passage of genes between the different age groups (and sexes) and a diagonal matrix whose elements depend on the number of individuals in each age group. Formulae for the inbreeding effective number are derived using matrix theory. A comparison ...
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ژورنال
عنوان ژورنال: Genetics Selection Evolution
سال: 1978
ISSN: 1297-9686
DOI: 10.1186/1297-9686-10-4-590b