Although Siberia was inhabited by modern humans at an early stage, there is still debate over whether it remained habitable during the extreme cold of the Last Glacial Maximum or whether it was subsequently repopulated by peoples with recent shared ancestry. Previous studies of the genetic history of Siberian populations were hampered by the extensive admixture that appears to have taken place ...

This article evaluates bias in one class of methods used to estimate archaic admixture in modern humans. These methods study the pattern of allele sharing among modern and archaic genomes. They are sensitive to "ghost" admixture, which occurs when a population receives archaic DNA from sources not acknowledged by the statistical model. The effect of ghost admixture depends on two factors: branc...

Aims. We investigate the confinement and long-term dynamics of the magnetised solar tachocline. Methods. Starting from first principles, we derive the values of turbulent transport coefficients in the magnetised solar tachocline and then explore the implications for the confinement and long-term dynamics of the tachocline. Results. For reasonable parameter values, the turbulent eddy viscosity i...

Following up on our previous study, we conducted a genome-wide analysis of admixture for two Uyghur population samples (HGDP-UG and PanAsia-UG), collected from the northern and southern regions of Xinjiang in China, respectively. Both HGDP-UG and PanAsia-UG showed a substantial admixture of East-Asian (EAS) and European (EUR) ancestries, with an empirical estimation of ancestry contribution of ...

T he prevalence of type 2 diabetes is higher in populations of Native American ancestry, and in Hispanic American populations formed by admixture between Europeans and Native Americans, than in populations of European ancestry. One approach to distinguishing between environmental and genetic explanations for this difference is to study the relationship of type 2 diabetes risk to individual admi...

By comparing the sex-specifically inheritedX chromosome to the autosomes in ancient genetic samples,we (1) studied sex-specific admixture for two prehistoric migrations. For each migration we used several admixture estimation procedures—including ADMIXTURE model-based clustering (2)—to compare X-chromosomal and autosomal ancestry in contemporaneous Central Europeans and we interpreted greater a...

T he prevalence of type 2 diabetes is higher in populations of Native American ancestry, and in Hispanic American populations formed by admixture between Europeans and Native Americans, than in populations of European ancestry. One approach to distinguishing between environmental and genetic explanations for this difference is to study the relationship of type 2 diabetes risk to individual admi...

Computer Supported Collaborative Learning (CSCL) support is currently widely accepted to provide reliable and valid formal and informal educational practices as proven to benefit students in onsite as well as distant educational settings. However, some results from case studies indicate that privacy problems could negatively affect CSCL implementation in educational settings. Privacy Enhancing ...

The effect of the interaction of iota-carrageenan (ICG) or lambda-carrageenan (LCG) with locust bean gum and carboxymethylcellulose on the properties of ice cream was studied employing a mixture design approach. A model formulation was employed with of 5% (w / w) of hydrocolloids like stabilizers. Hydrocolloids mixture effect on ice cream properties (base viscosity, ice-cream overrun, hardness,...