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Showing 1 to 12 of 189 entries
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Solving Winfree's puzzle: the isochrons in the FitzHugh-Nagumo model.

Chaos (Woodbury, N.Y.)

Langfield P, Krauskopf B, Osinga HM.
PMID: 24697393
Chaos. 2014 Mar;24(1):013131. doi: 10.1063/1.4867877.

We consider the FitzHugh-Nagumo model, an example of a system with two time scales for which Winfree was unable to determine the overall structure of the isochrons. An isochron is the set of all points in the basin of...

Nitrogen Fixation by Ceanothus.

Plant physiology

Delwiche CC, Zinke PJ, Johnson CM.
PMID: 16656188
Plant Physiol. 1965 Nov;40(6):1045-7. doi: 10.1104/pp.40.6.1045.

No abstract available.

Asymptotic statistical theory of overtraining and cross-validation.

IEEE transactions on neural networks

Amari S, Murata N, Muller KR, Finke M, Yang HH.
PMID: 18255701
IEEE Trans Neural Netw. 1997;8(5):985-96. doi: 10.1109/72.623200.

A statistical theory for overtraining is proposed. The analysis treats general realizable stochastic neural networks, trained with Kullback-Leibler divergence in the asymptotic case of a large number of training examples. It is shown that the asymptotic gain in the...

High-order coupled cluster method study of frustrated and unfrustrated quantum magnets in external magnetic fields.

Journal of physics. Condensed matter : an Institute of Physics journal

Farnell DJ, Zinke R, Schulenburg J, Richter J.
PMID: 21832427
J Phys Condens Matter. 2009 Oct 07;21(40):406002. doi: 10.1088/0953-8984/21/40/406002. Epub 2009 Sep 08.

We apply the coupled cluster method (CCM) in order to study the ground-state properties of the (unfrustrated) square-lattice and (frustrated) triangular-lattice spin-half Heisenberg antiferromagnets in the presence of external magnetic fields. Approximate methods are difficult to apply to the...

Exoplanet atmosphere. Thermal structure of an exoplanet atmosphere from phase-resolved emission spectroscopy.

Science (New York, N.Y.)

Stevenson KB, Désert JM, Line MR, Bean JL, Fortney JJ, Showman AP, Kataria T, Kreidberg L, McCullough PR, Henry GW, Charbonneau D, Burrows A, Seager S, Madhusudhan N, Williamson MH, Homeier D.
PMID: 25301972
Science. 2014 Nov 14;346(6211):838-41. doi: 10.1126/science.1256758. Epub 2014 Oct 09.

Exoplanets that orbit close to their host stars are much more highly irradiated than their solar system counterparts. Understanding the thermal structures and appearances of these planets requires investigating how their atmospheres respond to such extreme stellar forcing. We...

Cross-National Moral Beliefs: The Influence of National Religious Context.

The Sociological quarterly

Finke R, Adamczyk A.
PMID: 25097270
Sociol Q. 2008;49(4):617-652. doi: 10.1111/j.1533-8525.2008.00130.x.

International surveys have documented wide variation in religious beliefs and practices across nations, but does this variation in the national religious context make a difference? Building on existing theory we explain why religion should have both micro and macro-level...

Dynamical systems analysis of spike-adding mechanisms in transient bursts.

Journal of mathematical neuroscience

Nowacki J, Osinga HM, Tsaneva-Atanasova K.
PMID: 22655748
J Math Neurosci. 2012 Apr 24;2(1):7. doi: 10.1186/2190-8567-2-7.

Transient bursting behaviour of excitable cells, such as neurons, is a common feature observed experimentally, but theoretically, it is not well understood. We analyse a five-dimensional simplified model of after-depolarisation that exhibits transient bursting behaviour when perturbed with a...

Correction: Use of Mesh in Laparoscopic Paraesophageal Hernia Repair: A Meta-Analysis and Risk-Benefit Analysis.

PloS one

Müller-Stich BP, Kenngott HG, Gondan M, Stock C, Linke GR, Fritz F, Nickel F, Diener MK, Gutt CN, Wente M, Büchler MW, Fischer L.
PMID: 28158277
PLoS One. 2017 Feb 03;12(2):e0171865. doi: 10.1371/journal.pone.0171865. eCollection 2017.

[This corrects the article DOI: 10.1371/journal.pone.0139547.].

Sediment Microbial Communities Influenced by Cool Hydrothermal Fluid Migration.

Frontiers in microbiology

Zinke LA, Reese BK, McManus J, Wheat CG, Orcutt BN, Amend JP.
PMID: 29951048
Front Microbiol. 2018 Jun 13;9:1249. doi: 10.3389/fmicb.2018.01249. eCollection 2018.

Cool hydrothermal systems (CHSs) are prevalent across the seafloor and discharge fluid volumes that rival oceanic input from rivers, yet the microbial ecology of these systems are poorly constrained. The Dorado Outcrop on the ridge flank of the Cocos...

Pituitary Disease in Pregnancy: Special Aspects of Diagnosis and Treatment?.

Geburtshilfe und Frauenheilkunde

Petersenn S, Christ-Crain M, Droste M, Finke R, Flitsch J, Kreitschmann-Andermahr I, Luger A, Schopohl J, Stalla G.
PMID: 31000881
Geburtshilfe Frauenheilkd. 2019 Apr;79(4):365-374. doi: 10.1055/a-0794-7587. Epub 2019 Mar 06.

The diagnosis and treatment of pituitary disease in pregnancy represents a special clinical challenge. Not least because there is very little data on the treatment of pregnant patients with pituitary disorders. A selective search of the literature was carried...

Active and silent chromophore isoforms for phytochrome Pr photoisomerization: An alternative evolutionary strategy to optimize photoreaction quantum yields.

Structural dynamics (Melville, N.Y.)

Yang Y, Linke M, von Haimberger T, Matute R, González L, Schmieder P, Heyne K.
PMID: 26798771
Struct Dyn. 2014 Feb 05;1(1):014701. doi: 10.1063/1.4865233. eCollection 2014 Jan.

Photoisomerization of a protein bound chromophore is the basis of light sensing of many photoreceptors. We tracked Z-to-E photoisomerization of Cph1 phytochrome chromophore PCB in the Pr form in real-time. Two different phycocyanobilin (PCB) ground state geometries with different...

Tuning Ising superconductivity with layer and spin-orbit coupling in two-dimensional transition-metal dichalcogenides.

Nature communications

de la Barrera SC, Sinko MR, Gopalan DP, Sivadas N, Seyler KL, Watanabe K, Taniguchi T, Tsen AW, Xu X, Xiao D, Hunt BM.
PMID: 29650994
Nat Commun. 2018 Apr 12;9(1):1427. doi: 10.1038/s41467-018-03888-4.

Systems simultaneously exhibiting superconductivity and spin-orbit coupling are predicted to provide a route toward topological superconductivity and unconventional electron pairing, driving significant contemporary interest in these materials. Monolayer transition-metal dichalcogenide (TMD) superconductors in particular lack inversion symmetry, yielding an...

Showing 1 to 12 of 189 entries