Results 31 to 40 of about 251,527 (217)

Stability in flux: Community structure in dynamic networks [PDF]

, 2010
The structure of many biological, social and technological systems can usefully be described in terms of complex networks. Although often portrayed as fixed in time, such networks are inherently dynamic, as the edges that join nodes are cut and rewired ...
Jansen, Vincent AA, Funk, Sebastian, Vincent A. A. Jansen, Geard, N, Jansen, Vincent, Funk, S, John Bryden, Nicholas Geard, Bryden, J, Bullock, Seth, Bryden, John, Jansen, VAA, Sebastian Funk, Geard, Nicholas, Seth Bullock, Bullock, S   +15 more
core   +1 more source

Predacious activity of Ants (Hymenoptera: Formicidae) in conventional and in No-till agriculture systems

Brazilian Archives of Biology and Technology, 2008
This study had the objective of assessing the differences in foraging activity of the predacious ants between two areas, one conventional and other with no-till agriculture systems. The research was conducted in two contiguous 1.5 ha plots in Dourados MS,
Denise Lange, Wedson Desidério Fernandes, Josué Raizer, Odival Faccenda   +3 more
doaj   +1 more source

Directed network Laplacians and random graph models

Royal Society Open Science, 2021
We consider spectral methods that uncover hidden structures in directed networks. We establish and exploit connections between node reordering via (a) minimizing an objective function and (b) maximizing the likelihood of a random graph model. We focus on
Xue Gong, Desmond J. Higham, Konstantinos Zygalakis   +2 more
doaj   +1 more source

Effects of Red Imported Fire Ants (Solenopsis invicta) on the Species Structure of Ant Communities in South China

Sociobiology, 2014
We evaluated the effects of invasive red imported fire ants (RIFAs), Solenopsis invicta Buren, on native ant communities at three habitats in South China.
Yong Yue Lu, Bi-qiu Wu, Yi-Juan Xu, Ling Zeng   +3 more
doaj   +1 more source

Coupling Between the Responses of Plants, Soil, and Microorganisms Following Grazing Exclusion in an Overgrazed Grassland

Frontiers in Plant Science, 2021
Grazing exclusion is an effective management practice to restore grassland ecosystem functioning. However, little is known about the role of soil microbial communities in regulating grassland ecosystem functioning during long-term ecosystem restorations.
Zhen Wang, Xiliang Li, Baoming Ji, Paul C. Struik, Ke Jin, Shiming Tang   +5 more
doaj   +1 more source

Word usage mirrors community structure in the online social network Twitter [PDF]

, 2013
Background: Language has functions that transcend the transmission of information and varies with social context. To find out how language and social network structure interlink, we studied communication on Twitter, a broadly-used online messaging ...
Jansen, Vincent AA, John Bryden, Funk, Sebastian, Vincent AA Jansen, Bryden, John, Sebastian Funk   +5 more
core   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Community structure detection in the evolution of the United States airport network [PDF]

, 2013
This is the post-print version of the Article. Copyright © 2013 World Scientific PublishingThis paper investigates community structure in the US Airport Network as it evolved from 1990 to 2010 by looking at six bi-monthly intervals in 1990, 2000 and 2010,
Postorino, M. Nadia, Postorino M.N., Atherton M., Gegov, Emil, Gegov E., Gobet F., Gobet, Fernand, Atherton, Mark, Atherton, MA, Postorino, MN, Gegov, E, Gobet, F   +11 more
core   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

The human gut microbiome across the life course

FEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero, Basak Bahcivanci, Antonietta Hayhoe, Animesh Acharjee, Ezgi Özkurt   +4 more
wiley   +1 more source