Results 71 to 80 of about 5,272,693 (342)

Bifurcation points of variational inequalities [PDF]

Czechoslovak Mathematical Journal, 1982
Let K be a closed convex cone in a Hilbert space H with its vertex at the origin. Let \(A: H\to H\) be a linear (in general nonsymmetric) completely continuous operator, \(N: {\mathbb{R}}\times H\to H\) a nonlinear completely continuous operator satisfying the condition \(\lim_{\| v\| \to 0}(N(\mu,v)/\| v\|)=0\) uniformly on bounded \(\mu\)-intervals ...
openaire   +1 more source

Magnetism and Nonlinear Charge Transport in NiFe2O4/γ‐Al2O3/SrTiO3 Heterostructure: Toward Spintronic Applications

Advanced Functional Materials, EarlyView.
In this report, we demonstrate that a crystalline phase of 52nm thick NiFe2O4 can be grown by RF sputtering on top of γ‐Al2O3(8nm)/SrTiO3 at a significantly low temperature (150 °C) without compromising the mobility and carrier density of the 2D electron gas at the γ‐Al2O3(8nm)/SrTiO3 interface.
Amit Chanda, Thor Hvid‐Olsen, Christina Hoegfeldt, Anshu Gupta, Alessandro Palliotto, Fardin Ghaffari‐Tabrizi, Maja A. Dunstan, Kasper S. Pedersen, Dae‐Sung Park, Damon J. Carrad, Thomas Sand Jespersen, Felix Trier   +11 more
wiley   +1 more source

Bifurcation analysis of a normal form for excitable media: Are stable dynamical alternans on a ring possible?

, 2008
We present a bifurcation analysis of a normal form for travelling waves in one-dimensional excitable media. The normal form which has been recently proposed on phenomenological grounds is given in form of a differential delay equation.
Georg A. Gottwald, Guevara M. R., Krasovskii N., Mines G. R., Verhulst F., Winfree A. T.   +5 more
core   +1 more source

Scaling and crossovers in activated escape near a bifurcation point. [PDF]

Physical review. E, Statistical, nonlinear, and soft matter physics, 2003
Near a bifurcation point a system experiences a critical slowdown. This leads to scaling behavior of fluctuations. We find that a periodically driven system may display three scaling regimes and scaling crossovers near a saddle-node bifurcation where a ...
D. Ryvkine, M. Dykman, B. Golding
semanticscholar   +1 more source

Rolling and Impacting Caustic Drops on Super Liquid‐Repellent Surfaces: In Situ Force and Energy Monitoring of Surface Degradation

Advanced Functional Materials, EarlyView.
The use of continuous drop‐based force and energy probing methods is introduced to evaluate in situ chemical degradation of super liquid‐repellent surfaces by caustic liquids. By tracking the velocity of rolling drops and energy dissipation of impacting drops, degradation dynamics are resolved under high spatio‐temporal precision. Using this technique,
Parham Koochak, Kai Liu, William S. Y. Wong   +2 more
wiley   +1 more source

Investigation of Early Warning Indexes in a Three-Dimensional Chaotic System with Zero Eigenvalues

Entropy, 2020
A rare three-dimensional chaotic system with all eigenvalues equal to zero is proposed, and its dynamical properties are investigated. The chaotic system has one equilibrium point at the origin.
Lianyu Chen, Fahimeh Nazarimehr, Sajad Jafari, Esteban Tlelo-Cuautle, Iqtadar Hussain   +4 more
doaj   +1 more source

Stable vortex and dipole vector solitons in a saturable nonlinear medium

, 2002
We study both analytically and numerically the existence, uniqueness, and stability of vortex and dipole vector solitons in a saturable nonlinear medium in (2+1) dimensions.
A. Barthelemy, A.S. Desyatnikov, A.S. Desyatnikov, A.V. Buryak, C. Anastassiou, C.R. Menyuk, D.E. Edmundson, D.E. Edmundson, D.E. Edmundson, D.E. Edmundson, D.E. Pelinovsky, D.E. Pelinovsky, D.V. Skryabin, Dmitry E. Pelinovsky, E.A. Ostrovskaya, G.I. Stegeman, J. Yang, J. Yang, J. Yang, J.J. Garcia-Ripoll, J.M. Soto-Crespo, J.N. Malmberg, J.S. Aitchison, J.W. Grantham, Jianke Yang, L. Berge, M. Mitchell, N.N. Rosanov, R.Y. Chiao, T. Carmon, V.E. Zakharov, V.E. Zakharov, W. Krolikowski, W.J. Firth, Z.H. Musslimani, Z.H. Musslimani, Z.H. Musslimani, Z.H. Musslimani   +37 more
core   +1 more source

Biointerface Membranes Orchestrating Site‐Specific Osteoimmunomodulatory and Antibacterial Effects for Enhanced Osseous Regeneration in Periodontal Therapy

Advanced Functional Materials, EarlyView.
Here, a biointerface membrane engineered with site‐specific interfacial properties is developed. During implantation between gingival and bone defect, the membrane creates a pro‐osteogenic microenvironment, precisely modulates cellular activities at each biointerface, and facilitates the orchestration of complex healing events, ultimately leading to ...
Yuwei Zhu, Tingting Wang, Jing Zhu, Bingtian Zhao, Bingyang Dai, Xiaoyue Zhang, Wei Liu, Cheng Yang, Cheng Dong, Ren Liu, Lei Zhao, Jun Wang, Peilei Shi, To Ngai   +13 more
wiley   +1 more source

Coupled Effects of Turing and Neimark-Sacker Bifurcations on Vegetation Pattern Self-Organization in a Discrete Vegetation-Sand Model

Entropy, 2017
Wind-induced vegetation patterns were proposed a long time ago but only recently a dynamic vegetation-sand relationship has been established. In this research, we transformed the continuous vegetation-sand model into a discrete model.
Feifan Zhang, Huayong Zhang, Tousheng Huang, Tianxiang Meng, Shengnan Ma   +4 more
doaj   +1 more source

Bioprinting Organs—Science or Fiction?—A Review From Students to Students

Advanced Healthcare Materials, EarlyView.
Bioprinting artificial organs has the potential to revolutionize the medical field. This is a comprehensive review of the bioprinting workflow delving into the latest advancements in bioinks, materials and bioprinting techniques, exploring the critical stages of tissue maturation and functionality.
Nicoletta Murenu, Camilla Mussoni, Mateo S. Andrade Mier, Paula Buettner, Nathaly Chicaiza‐Cabezas, Yi‐Yu Robin Dai, Jessica Faber, Maren Fiedler, Zan Lamberger, Xuen Jen Ng, Vanessa Moessler, Anna Rederer, Jonas Roeder, Sabrina Stecher, Katinka Theis, Jeanette Weigelt, Silvia Budday, Gregor Lang, Natascha Schaefer   +18 more
wiley   +1 more source