Results 51 to 60 of about 104,002 (268)

Refuge used by prey as a function of predator numbers in a Leslie-type model

Selecciones Matemáticas
This paper deals with a continuous-time predator-prey model of Leslie-Gower type considering the use of a physical refuge by a fraction of the prey population.
Paulo Tintinago-Ruiz, Alejandro Rojas-Palma, Eduardo González-Olivares   +2 more
doaj   +1 more source

Gated Recurrent Units Viewed Through the Lens of Continuous Time Dynamical Systems

Frontiers in Computational Neuroscience, 2021
Gated recurrent units (GRUs) are specialized memory elements for building recurrent neural networks. Despite their incredible success on various tasks, including extracting dynamics underlying neural data, little is understood about the specific dynamics
Ian D. Jordan, Ian D. Jordan, Piotr Aleksander Sokół, Il Memming Park, Il Memming Park, Il Memming Park   +5 more
doaj   +1 more source

Fermi Surface Nesting and Anomalous Hall Effect in Magnetically Frustrated Mn2PdIn

Advanced Functional Materials, EarlyView.
Mn2PdIn, a frustrated inverse Heusler alloy, showing electronic‐structure driven anomalous Hall effect with Weyl crossings, Fermi‐surface nesting and near‐zero magnetization ideal for low‐magnetization spintronics. Abstract Noncollinear magnets with near‐zero net magnetization and nontrivial bulk electronic topology hold significant promise for ...
Afsar Ahmed, Arnab Bhattacharya, Prashant Singh, Ajay Kumar, Tukai Singha, Anis Biswas, Yaroslav Mudryk, I. Das   +7 more
wiley   +1 more source

Symmetry-breaking transitions in networks of nonlinear circuit elements

, 2010
We investigate a nonlinear circuit consisting of N tunnel diodes in series, which shows close similarities to a semiconductor superlattice or to a neural network. Each tunnel diode is modeled by a three-variable FitzHugh-Nagumo-like system.
, Bonilla L L, Cidronali A, Deshpande M R, Deshpande M R, Doedel E J, Eckehard Schöll, Eugene M, Golubitsky M, Kazarinov R F, Krauskopf B, Langford W F, Martin Heinrich, Schöll E, Schöll E, Schöll E, Schöll E, Shaw M P, Stegemann G, Stephen W Teitsworth, Thomas Dahms, Valentin Flunkert   +21 more
core   +1 more source

Unleashing the Power of Machine Learning in Nanomedicine Formulation Development

Advanced Functional Materials, EarlyView.
A random forest machine learning model is able to make predictions on nanoparticle attributes of different nanomedicines (i.e. lipid nanoparticles, liposomes, or PLGA nanoparticles) based on microfluidic formulation parameters. Machine learning models are based on a database of nanoparticle formulations, and models are able to generate unique solutions
Thomas L. Moore, Cristiano Pesce, Antonietta Greco, Claudia Pisante, Greta Avancini, Valentina Di Francesco, Yosi Shamay, Paolo Decuzzi   +7 more
wiley   +1 more source

Tipping the Balance: A Criticality Perspective

Entropy, 2022
Cell populations are often characterised by phenotypic heterogeneity in the form of two distinct subpopulations. We consider a model of tumour cells consisting of two subpopulations: non-cancer promoting (NCP) and cancer-promoting (CP).
Indrani Bose
doaj   +1 more source

Occurrence of periodic Lam\'e functions at bifurcations in chaotic Hamiltonian systems [PDF]

, 2001
We investigate cascades of isochronous pitchfork bifurcations of straight-line librating orbits in some two-dimensional Hamiltonian systems with mixed phase space.
, , Brack M, Brack M, Brack M, Brack M, Churchill R C, de Aguiar M A M, Erdélyi A, Erdélyi A, Erdélyi A, Fedotkin S N, Feigenbaum M J, Friedrich F, Gradshteyn I S, Gutzwiller M C, Gutzwiller M C, Hasegawa H, Hill G W, Ince E L, Ince E L, Ince E L, K Tanaka, Lamé G, Lamé G, M Brack, M Mehta, Magnus W, Main J, Schomerus H, Sieber M, Sieber M, Strutt M J O, Then H L, Then H L, Yoshida H   +35 more
core   +5 more sources

Atomic‐Level Dual‐Cation Engineering Enables High‐Performance Na4VMn(PO4)3 Cathodes for Sodium‐Ion Batteries

Advanced Functional Materials, EarlyView.
Dual‐cation site engineering unlocks stable and fast sodium storage in Na4VMn(PO4)3 cathodes. Li+ at Na2 suppresses Jahn‐Teller distortion, while K+ at Na1 expands ion channels, enabling synchronized V/Mn redox and quasi‐single‐phase kinetics. This atomic‐level strategy achieves ultralong cycling stability, high‐rate capability, and full cell viability
Jiaze Sun, Xiaoyu Hu, Xianhe Meng, Nengjun Yu, Qiaoling Kang, Lijing Yan, Meiqiang Fan, Chubin Wan, Tingli Ma   +8 more
wiley   +1 more source

Dynamical Phase Transitions In Driven Integrate-And-Fire Neurons

, 2007
We explore the dynamics of an integrate-and-fire neuron with an oscillatory stimulus. The frustration due to the competition between the neuron's natural firing period and that of the oscillatory rhythm, leads to a rich structure of asymptotic phase ...
C. Laing, J. A. Connor, Jan R. Engelbrecht, N. Goldenfeld, P. Dayan, R. L. Devaney, Renato Mirollo   +6 more
core   +1 more source

Bifurcation Analysis of the Watt Governor System [PDF]

, 2006
This paper pursues the study carried out by the authors in {\it Stability and Hopf bifurcation in the Watt governor system} \cite{smb}, focusing on the codimension one Hopf bifurcations in the centrifugal Watt governor differential system, as presented ...
Braga, Denis de Carvalho, Mello, Luis Fernando, Sotomayor, Jorge   +2 more
core   +4 more sources