scholarly journals النفى في عصر الدولة الأموية جزيرة دهلک أنموذجا Banishment in the age of the Umayyad state Dahlak Island model

2021 ◽  
Vol 27 (1) ◽  
pp. 773-864
Author(s):  
رانيا أحمد محمد اسماعيل
Keyword(s):  
Island Model

scholarly journals A New Statistic for Detecting Genetic Differentiation

Genetics ◽  
2000 ◽  
Vol 155 (4) ◽  
pp. 2011-2014 ◽  
Author(s):  
Richard R Hudson
Keyword(s):  
Genetic Differentiation ◽  
Dna Sequences ◽  
Genetic Data ◽  
Island Model ◽  
Wide Range ◽  
Infinite Sites Model ◽  
Parameter Values

Abstract A new statistic for detecting genetic differentiation of subpopulations is described. The statistic can be calculated when genetic data are collected on individuals sampled from two or more localities. It is assumed that haplotypic data are obtained, either in the form of DNA sequences or data on many tightly linked markers. Using a symmetric island model, and assuming an infinite-sites model of mutation, it is found that the new statistic is as powerful or more powerful than previously proposed statistics for a wide range of parameter values.

scholarly journals Control of Bloat in Genetic Programming by Means of the Island Model

2004 ◽  
pp. 263-271 ◽  
Author(s):  
Francisco Fernández-de-Vega ◽  
German Galeano Gil ◽  
Juan Antonio Gómez Pulido ◽  
Jose Luis Guisado
Keyword(s):  
Genetic Programming ◽  
Island Model

scholarly journals A cladistic measure of gene flow inferred from the phylogenies of alleles.

Genetics ◽  
1989 ◽  
Vol 123 (3) ◽  
pp. 603-613 ◽  
Author(s):  
M Slatkin ◽  
W P Maddison
Keyword(s):  
Mitochondrial Dna ◽  
Gene Flow ◽  
Migration Rate ◽  
Local Population ◽  
Geographic Location ◽  
Island Model ◽  
Simple Function ◽  
Average Level ◽  
Minimum Number ◽  
Parsimony Criterion

Abstract A method for estimating the average level of gene flow among populations is introduced. The method provides an estimate of Nm, where N is the size of each local population in an island model and m is the migration rate. This method depends on knowing the phylogeny of the nonrecombining segments of DNA that are sampled. Given the phylogeny, the geographic location from which each sample is drawn is treated as multistate character with one state for each geographic location. A parsimony criterion applied to the evolution of this character on the phylogeny provides the minimum number of migration events consistent with the phylogeny. Extensive simulations show that the distribution of this minimum number is a simple function of Nm. Assuming the phylogeny is accurately estimated, this method provides an estimate of Nm that is as nearly as accurate as estimates obtained using FST and other statistics when Nm is moderate. Two examples of the use of this method with mitochondrial DNA data are presented.

scholarly journals A Simple, Microfounded Lucas Island Model

2011 ◽  
Author(s):  
Teodoro Dario Togati ◽  
Mauro Visaggio
Keyword(s):  
Island Model
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