Genetic variation at most loci examined in human populations indicates that the (effective) population size has been approximately 10(4) for the past 1 Myr and that individuals have been genetically united rather tightly. Also suggested is that the population size has never dropped to a few individuals, even in a single generation. These impose important requirements for the hypotheses for the ...

We consider catalytic branching populations. They consist of a catalyst population evolving according to a critical binary branching process in continuous time with a constant branching rate and a reactant population with a branching rate proportional to the number of catalyst individuals alive. The reactant forms a process in random medium. We describe asymptotically the genealogy of catalytic...

In standard approaches to NLP phrase structure is usually specified by a grammar. The coverage of such a grammar, especially in the case of performance data, is often insufficient; the grammar is subject to frequent modifications and this can bring about maintainability prob­ lems. In this paper we describe a relational basis underlying phrase structure. Based on that, a model is defined th a t...

Over the last few decades, there have been many proposals for collective housing in which architectural forms have arisen from processes of infinite iteration. These designs put special emphasis on the concept of the element or basic unit, but also focus on the mechanisms by which these elements and units relate to one another and grow. This essay is an exploration of the historical precedents ...

The article introduces a previously unknown text of the Genealogy Russian Sovereigns from collections Department Manuscripts National Library, which contains engraving program A. F. Zubov’s “Portrait Catherine I surrounded by medallions with portraits princes and tsars” 1725. It also reveals source this “Genealogy” in form historical genealogical introduction to anonymous “History Peter Great”,...

Abstract Against those who identify genealogy with reductive genealogical debunking or deny it evaluative significance, I argue, first, that while genealogies tend to trace the higher lower, they need not reduce but can elucidate their relation and help us think more realistically about both relata; second, if we conceive of in terms a triadic model including addressee, becomes intelligible how...