Search results for " DOM"
showing 10 items of 2750 documents
The genetic prehistory of domesticated cattle from their origin to the spread across Europe.
2014
Background Cattle domestication started in the 9th millennium BC in Southwest Asia. Domesticated cattle were then introduced into Europe during the Neolithic transition. However, the scarcity of palaeogenetic data from the first European domesticated cattle still inhibits the accurate reconstruction of their early demography. In this study, mitochondrial DNA from 193 ancient and 597 modern domesticated cattle (Bos taurus) from sites across Europe, Western Anatolia and Iran were analysed to provide insight into the Neolithic dispersal process and the role of the local European aurochs population during cattle domestication. Results Using descriptive summary statistics and serial coalescent s…
The pioneering role of PRDM9 indel mutations in tarsier evolution
2016
PRDM9 is currently the sole speciation gene found in vertebrates causing hybrid sterility probably due to incompatible alleles. Its role in defining the double strand break loci during the meiotic prophase I is crucial for proper chromosome segregation. Therefore, the rapid turnover of the loci determining zinc finger array seems to be causative for incompatibilities. We here investigated the zinc finger domain-containing exon of PRDM9 in 23 tarsiers. Tarsiers, the most basal extant haplorhine primates, exhibit two frameshifting indels at the 5'-end of the array. The first mutation event interrupts the reading frame and function while the second compensates both. The fixation of this allele…
The Competiveness of the Spanish Regions
2009
Competitiveness is a widely popular concept, which has saved in practise, to denote efficient economic behaviour. The wide dissemination of the competitiveness ranking of countries published annually by the World Economic Forum of Davos (Switzerland), or the fact that the European Union defines some of the global problems, which affect the countries of the EU in terms of the competitiveness gap, have footered the use of this expression in the media. The use of the term to denominate some of the objectives of the European Regional policy has also contributed to extending the use of the expression, as well as the work of prestigious consultants, such as Michael Porter, in influential works, s…
Explosive origin of silicic lava: Textural andδD–H 2 O evidence for pyroclastic degassing during rhyolite effusion
2014
A long-standing challenge in volcanology is to explain why explosive eruptions of silicic magma give way to lava. A widely cited idea is that the explosive-to-effusive transition manifests a two-stage degassing history whereby lava is the product of non-explosive, open-system gas release following initial explosive, closed-system degassing. Direct observations of rhyolite eruptions indicate that effusive rhyolites are in fact highly explosive, as they erupt simultaneously with violent volcanic blasts and pyroclastic fountains for months from a common vent. This explosive and effusive overlap suggests that pyroclastic processes play a key role in rendering silicic magma sufficiently degassed…
The Self-expression Motivational System
2016
The main aim of this chapter is to introduce and promote the concept of self-expression as a basic motivation. Considering that the amount of literature on self-expression, matched with the concepts of control and affiliation, is practically non-existent, the chapter starts by attempting to provide a viable definition of self-expression motivation. Furthermore, the concept of art as a domain in which the underlying tendency for self-expression is clearly manifested is also considered. The chapter also includes a literature review to show whether or not self-expression motivation is able to fulfil the criteria suggested by Baumeister and Leary (Psychological Bulletin, 117, 497–529, 1995). Th…
Korelācija starp acu dominanci un ķermeņa stājas līdzsvaru
2017
Bakalaura darbs ir uzrakstīts angļu valodā uz 34 lapaspusēm, tas satur 21 zīmējumus, 21 atsauces uz literatūras avotiem. Darba mērķis ir novērtēt sensorialās un motorās dominances ietekmi uz ķermeņa līdzsvaru statiskos apstākļos. Salīdzinot abu atvērto acu testus ar aiztaisīto acu testiem var redzēt stipru binokulārās redzes ietekmi uz ķermeņa līdzsvaru. Turpretī nav novērota statistiska atšķirība starp atvērtas dominantās acs ietekmi un atvērtas nedominantās acs ietekmi. Visiem pētījumu dalībniekiem atvērta dominantā acs neuzrādīja lielāku ietekmi uz līdzsvara balansu kā nedominantā acs. Turpretī binokulārās redzes apstākļos līdzsvars uzlabojās, ko var redzēt pēc ticamības elipses lieluma …
Combined effects of compost and Medicago sativa in recovery a PCB contaminated soil
2020
The effectiveness of adding compost and the plant Medicago sativa in improving the quality of a soil historically contaminated by polychlorinated biphenyls (PCBs) was tested in greenhouse microcosms. Plant pots, containing soil samples from an area contaminated by PCBs, were treated with the compost and the plant, separately or together. Moreover, un-treated and un-planted microcosms were used as controls. At fixed times (1, 133 and 224 days), PCBs were analysed and the structure (cell abundance, phylogenetic characterization) and functioning (cell viability, dehydrogenase activity) of the natural microbial community were also measured. The results showed the effectiveness of the compost an…
On the interpretability and computational reliability of frequency-domain Granger causality
2017
This Correspondence article is a comment which directly relates to the paper “A study of problems encountered in Granger causality analysis from a neuroscience perspective” (Stokes and Purdon, 2017). We agree that interpretation issues of Granger causality (GC) in neuroscience exist, partially due to the historically unfortunate use of the name “causality”, as described in previous literature. On the other hand, we think that Stokes and Purdon use a formulation of GC which is outdated (albeit still used) and do not fully account for the potential of the different frequency-domain versions of GC; in doing so, their paper dismisses GC measures based on a suboptimal use of them. Furthermore, s…
Hybrid blind robust image watermarking technique based on DFT-DCT and Arnold transform
2018
In this paper, a robust blind image watermarking method is proposed for copyright protection of digital images. This hybrid method relies on combining two well-known transforms that are the discrete Fourier transform (DFT) and the discrete cosine transform (DCT). The motivation behind this combination is to enhance the imperceptibility and the robustness. The imperceptibility requirement is achieved by using magnitudes of DFT coefficients while the robustness improvement is ensured by applying DCT to the DFT coefficients magnitude. The watermark is embedded by modifying the coefficients of the middle band of the DCT using a secret key. The security of the proposed method is enhanced by appl…
Critical comments on EEG sensor space dynamical connectivity analysis
2019
Many different analysis techniques have been developed and applied to EEG recordings that allow one to investigate how different brain areas interact. One particular class of methods, based on the linear parametric representation of multiple interacting time series, is widely used to study causal connectivity in the brain. However, the results obtained by these methods should be interpreted with great care. The goal of this paper is to show, both theoretically and using simulations, that results obtained by applying causal connectivity measures on the sensor (scalp) time series do not allow interpretation in terms of interacting brain sources. This is because (1) the channel locations canno…