Results 71 to 80 of about 30,743 (170)

Epidemic Threshold in Continuous-Time Evolving Networks [PDF]

open access: yes, 2018
Current understanding of the critical outbreak condition on temporal networks relies on approximations (time scale separation, discretization) that may bias the results.
Colizza, Vittoria   +3 more
core   +3 more sources

Phylogenetic evidence reveals early Kra-Dai divergence and dispersal in the late Holocene

open access: yesNature Communications, 2023
Studying language evolution brings a crucial perspective to bear on questions of human prehistory. As the most linguistically diverse region on earth, East and Southeast Asia have witnessed extensive sociocultural and ethnic contacts among different ...
Yuxin Tao   +11 more
doaj   +1 more source

Population spread and cultural transmission in Neolithic transitions [PDF]

open access: yes, 2014
The classical wave-of-advance model is based on Fisher's equation. However, this approach leads to an unbounded wave-of-advance speed at high reproduction rates. In contrast, an integro-difference model leads to a finite upper bound for the speed, namely
Fort, Joaquim   +3 more
core   +2 more sources

Dynamical patterns of epidemic outbreaks in complex heterogeneous networks [PDF]

open access: yes, 2004
We present a thorough inspection of the dynamical behavior of epidemic phenomena in populations with complex and heterogeneous connectivity patterns.
Barrat, Alain   +3 more
core   +4 more sources

Entheseal changes and activity patterns in southern African hunter‐gatherer/herders from the Holocene

open access: yesAmerican Journal of Biological Anthropology, Volume 183, Issue 1, Page 107-124, January 2024.
Illustration of zone demarcations on the subscapularis enthesis on right humeral head with examples of entheseal changes scored using the Coimbra method. (A) Demarcation of Zone 1 (yellow) and Zone 2 (white); (B) Bone formation score 2 in Zone 1 of the subscapularis enthesis (unfilled arrow) with erosion score 2 in Zone 2 (black arrow) and cavitation ...
Elizabeth Dinkele   +1 more
wiley   +1 more source

HLA alleles and haplotypes in Sudanese population and their relationship with Mediterraneans

open access: yesScientific Reports, 2023
The contribution of migrated people from once green Sahara (about 10,000–6000 years bc) towards Mediterranean area had probably a double effect: both genetic and cultural connections have been described between Western Europe and North Africa.
Fabio Suarez-Trujillo   +6 more
doaj   +1 more source

Reactive immunization on complex networks

open access: yes, 2017
Epidemic spreading on complex networks depends on the topological structure as well as on the dynamical properties of the infection itself. Generally speaking, highly connected individuals play the role of hubs and are crucial to channel information ...
Alfinito, Eleonora   +3 more
core   +1 more source

An Exploratory Study of COVID-19 Misinformation on Twitter [PDF]

open access: yes, 2020
During the COVID-19 pandemic, social media has become a home ground for misinformation. To tackle this infodemic, scientific oversight, as well as a better understanding by practitioners in crisis management, is needed.
Dirkson, Anne   +2 more
core   +3 more sources

Information is not a Virus, and Other Consequences of Human Cognitive Limits

open access: yes, 2016
The many decisions people make about what to pay attention to online shape the spread of information in online social networks. Due to the constraints of available time and cognitive resources, the ease of discovery strongly impacts how people allocate ...
Lerman, Kristina
core   +2 more sources

Comparison of the device physics principles of planar and radial p-n junction nanorod solar cells [PDF]

open access: yes, 2005
A device physics model has been developed for radial p-n junction nanorod solar cells, in which densely packed nanorods, each having a p-n junction in the radial direction, are oriented with the rod axis parallel to the incident light direction.
Atwater, Harry A.   +2 more
core   +1 more source

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