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An obstructions to Non-negative curvature on Bundles with Pull-back connections
nonegative sectional curvature riemannian submersions exotic spheres
2012/6/30
Motivated to study the geometry of the exotic spheres constructed in [5], we derive a necessary condition for non-negative sectional curvature in certain total spaces of Riemannian submersions with to...
About the trajectory synthesis to go back to nominal mode for a class of hybrid systems
hybrid automata reachability linear vector fields state-space
2011/9/19
Abstract: This paper presents basis parts of a new method to synthesize a return trajectory for a reactive process from a default mode to one of the nominal modes. The process is modeled with a hybrid...
The enclosure method for inverse obstacle scattering problems with dynamical data over a finite time interval II. Obstacles with a dissipative boundary or finite refractive index and back-scattering data
enclosure method inverse obstacle scattering problem inverse backscattering obstacle wave equation dissipative boundary condition
2011/9/5
Abstract: In this paper a wave is generated by an initial data whose support is localized at the outside of unknown obstacles and observed in a limited time on a known closed surface or the same posit...
Pull-back of currents by meromorphic maps
Currents Dominant meromorphic maps Intersection of currents Pullback of currents
2011/8/31
Abstract: Let $X$ and $Y$ be compact Kahler manifolds, and let $f:X\rightarrow Y$ be a dominant meromorphic map. We define a pullback operator $f^{\sharp}$ (and its local version) for currents of the ...
To Feed or Not to Feed Back
To Feed Feed Back
2010/11/12
We study the communication over Finite State Channels (FSCs), where the encoder and the decoder can control the availability or the quality of the noise-free feedback. Specifically, the instantaneous...
A nudging-based data assimilation method:the Back and Forth Nudging (BFN) algorithm
nudging-based data assimilation method BFN algorithm
2009/10/30
This paper deals with a new data assimilation algorithm, called Back and Forth Nudging. The standard nudging technique consists in adding to the equations of the model a relaxation term that is suppos...
Test of the Possible Application of the Half-Way Bounce-Back Boundary
Condition for Lattice Boltzmann Methods in Complex Geometry
lattice Boltzmann method
2007/8/15
2001Vol.35No.5pp.593-596DOI:
Test of the Possible Application of the Half-Way Bounce-Back Boundary
Condition for Lattice Boltzmann Methods in Complex Geometry
WAN Rong-Zheng and F...
