Results 11 to 20 of about 240,294 (261)

Creation and annihilation of topological meron pairs in in-plane magnetized films [PDF]

Nature Communications, 2019
Merons which are topologically equivalent to one-half of skyrmions can exist only in pairs or groups in two-dimensional (2D) ferromagnetic (FM) systems.
N. Gao, N. Gao, Soong-Geun Je, M. Im, M. Im, J. W. Choi, Mengmeng Yang, Qian Li, Tina Wang, Sukbin Lee, Hee-Sung Han, Ki‐Suk Lee, W. Chao, C. Hwang, J. Li, Z. Qiu   +15 more
semanticscholar   +4 more sources

Local stability properties of complex, species‐rich soil food webs with functional block structure

Ecology and Evolution, 2021
Ecologists have long debated the properties that confer stability to complex, species‐rich ecological networks. Species‐level soil food webs are large and structured networks of central importance to ecosystem functioning.
Francisco deCastro, Sina M. Adl, Stefano Allesina, Richard D. Bardgett, Thomas Bolger, Johnathan J. Dalzell, Mark Emmerson, Thomas Fleming, Diego Garlaschelli, Jacopo Grilli, Silja Emilia Hannula, Franciska deVries, Zoë Lindo, Aaron G. Maule, Maarja Öpik, Matthias C. Rillig, Stavros D. Veresoglou, Diana H. Wall, Tancredi Caruso   +18 more
doaj   +1 more source

Field theories with higher-group symmetry from composite currents

Journal of High Energy Physics, 2021
Higher-form symmetries are associated with transformations that only act on extended objects, not on point particles. Typically, higher-form symmetries live alongside ordinary, point-particle (0-form), symmetries and they can be jointly described in ...
Tomáš Brauner
doaj   +1 more source

Role of Non-Covalent Interactions in Novel Supramolecular Compound, Bis(4-phenylpiperazin-1-ium) Oxalate Dihydrate: Synthesis, Molecular Structure, Thermal Characterization, Spectroscopic Properties and Quantum Chemical Study

Crystals, 2023
The stoichiometric ratio 2:1 mix of 1-phenylpiperazine and oxalic acid dihydrate followed by slow evaporation results in a new material, bis(4-phenylpiperazin-1-ium) oxalate dihydrate, with the general chemical formula (C10H15N2)2(C2O4).2H2O, indicated ...
Mahdi Jemai, Marwa Khalfi, Noureddine Issaoui, Thierry Roisnel, Aleksandr S. Kazachenko, Omar Al-Dossary, Houda Marouani, Anna S. Kazachenko, Yuriy N. Malyar   +8 more
doaj   +1 more source

Galois orbits of TQFTs: symmetries and unitarity

Journal of High Energy Physics, 2022
We study Galois actions on 2+1D topological quantum field theories (TQFTs), characterizing their interplay with theory factorization, gauging, the structure of gapped boundaries and dualities, 0-form symmetries, 1-form symmetries, and 2-groups.
Matthew Buican, Rajath Radhakrishnan
doaj   +1 more source

Impact of Variable Speed on Collective Movement of Animal Groups

Frontiers in Physics, 2021
The collective dynamics and structure of animal groups has attracted the attention of scientists across a broad range of fields. A variety of agent-based models have been developed to help understand the emergence of coordinated collective behavior from ...
Pascal P. Klamser, Pascal P. Klamser, Luis Gómez-Nava, Luis Gómez-Nava, Tim Landgraf, Tim Landgraf, Jolle W. Jolles, David Bierbach, David Bierbach, David Bierbach, Pawel Romanczuk, Pawel Romanczuk, Pawel Romanczuk   +12 more
doaj   +1 more source

Understanding crowd-powered search groups: a social network perspective. [PDF]

PLoS ONE, 2012
BackgroundCrowd-powered search is a new form of search and problem solving scheme that involves collaboration among a potentially large number of voluntary Web users. Human flesh search (HFS), a particular form of crowd-powered search originated in China,
Qingpeng Zhang, Fei-Yue Wang, Daniel Zeng, Tao Wang   +3 more
doaj   +1 more source

Inferring local topology via variational convolution for graph representation

工程科学学报, 2023
The development of deep learning techniques and support of big data computing power have revolutionized graph representation research by facilitating the implementation of the learning of different graph neural network structures.
Jingyi HOU, Yuxin TANG, Xinbo YU, Zhijie LIU   +3 more
doaj   +1 more source

The evolutionary dynamics of protein-protein interaction networks inferred from the reconstruction of ancient networks. [PDF]

PLoS ONE, 2013
Cellular functions are based on the complex interplay of proteins, therefore the structure and dynamics of these protein-protein interaction (PPI) networks are the key to the functional understanding of cells.
Yuliang Jin, Dmitrij Turaev, Thomas Weinmaier, Thomas Rattei, Hernán A Makse   +4 more
doaj   +1 more source

Evolutionary Dynamics of the Repeatome Explains Contrasting Differences in Genome Sizes and Hybrid and Polyploid Origins of Grass Loliinae Lineages

Frontiers in Plant Science, 2022
The repeatome is composed of diverse families of repetitive DNA that keep signatures on the historical events that shaped the evolution of their hosting species.
María Fernanda Moreno-Aguilar, Luis A. Inda, Luis A. Inda, Aminael Sánchez-Rodríguez, Itziar Arnelas, Pilar Catalán, Pilar Catalán   +6 more
doaj   +1 more source