نتایج جستجو برای: final emergence population

تعداد نتایج: 955553  

2010
Laura B. Scheinfeldt Sameer Soi Sarah A. Tishkoff

Although Africa is the origin of modern humans, the pattern and distribution of genetic variation and correlations with cultural and linguistic diversity in Africa have been understudied. Recent advances in genomic technology, however, have led to genomewide studies of African samples. In this article, we discuss genetic variation in African populations contextualized with what is known about a...

Journal: :Journal of the Anthropological Society of Nippon 1992

2012
Michael D. Frachetti

In this article I present a new archaeological synthesis concerning the earliest formation of mobile pastoralist economies across central Eurasia. I argue that Eurasian steppe pastoralism developed along distinct local trajectories in the western, central, and (south)eastern steppe, sparking the development of regional networks of interaction in the late fourth and third millennia BC. The “Inne...

Journal: :New Media & Society 2017
Ellen J. Helsper Bianca C. Reisdorf

Research into reasons for internet non-use has been mostly based on one-off cohort studies and focused on single-country contexts. This paper shows that motivations for being offline changed between 2005 and 2013 amongst non-and ex-users in two high diffusion European countries. Analyses of Swedish and British data demonstrate that non-user populations have become more concentrated in vulnerabl...

2011
Han The Anh Luís Moniz Pereira Francisco C. Santos

Intention-based decision making Intention recognition is ubiquitous in most social interactions among Humans and other primates. However, the role of intention recognition in the emergence of cooperative actions remains elusive. Using the tools of evolutionary game theory, here we address, for the first time, the role played by intention recognition in the final outcome of cooperation in large ...

2001
Stephen Shennan

ers, without committing ourselves one way or the other as to their effect on biological fitness. Nevertheless, the idea that some innovations will be less attractive to imitate and others more so, while some make only a marginal difference to existing options, seems a reasonable one. The specific aim of this article is to explore the consequences of innovations in small populations of the kind ...

2002
Philippe Rushton J. P. Rushton

To allow an adequate evaluation of r/K theory in light of Silverman’s critique, data are tabulated showing that, on average, Mongoloids > Caucasoids > Negroids in brain size and intelligence, maturational delay, sexual restraint, quiescent temperament, and social organization. The sequence of this suite of life-history characters may parallel the order of emergence of the populations in earth h...

2014
Clare McArthur Jennifer Sorensen Forbey

with different personalities and physiologies should do so too, creating individualised landscapes of food and fear. We explore the ecological significance and emergent impacts of these individual-based foraging outcomes on populations and communities, and offer predictions that can be clearly tested. In doing so, we provide an integrated platform advancing herbivore foraging theory with food q...

2007
Stephen C. Welter

A preliminary conclusion of the research is that there does not appear to be significant genetic differences in developmental times between the codling moth populations in walnuts and apples. Codling moths were collected from walnuts and placed onto artificial diet as a rearing medium. Data obtained from these individuals were consistent with the data obtained from colonies of codling moth coll...

Chamomile (Anthemis haussknechtii Boiss. & Reut. and Anthemis pseudocotula Boiss.) are annual, medicinal and aromatic plant belong to Asteraceae family. This two species have special important in pharmaceutical and cosmetic industries. Current study was carried out to investigation of different pre-treatments for enhancement of seed emergence potential, rate of emergence and v...

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