Results 1  10
of
3,042
Symplectic rigidity, symplectic fixed points and global perturbations of Hamiltonian systems
, 2005
"... Abstract. In this paper we study a generalized symplectic fixed point problem, first considered by J. Moser in [19], from the point of view of some relatively recently discovered symplectic rigidity phenomena. This problem has interesting applications concerning global perturbations of Hamiltonian s ..."
Abstract

Cited by 26 (0 self)
 Add to MetaCart
Abstract. In this paper we study a generalized symplectic fixed point problem, first considered by J. Moser in [19], from the point of view of some relatively recently discovered symplectic rigidity phenomena. This problem has interesting applications concerning global perturbations of Hamiltonian
Global perturbation of the Riemann problem for the system of compressible flow through porous media
"... In this paper we have considered the unperturbated and perturbated Riemann problem for the damped quasilinear hyperbolic system ( v t \Gamma u x = 0 u t + p(v) x = \Gammaffu; ff ? 0; p 0 (v) ! 0 with initial structure of two rarefaction waves or one rarefaction wave plus one shock wave. Under c ..."
Abstract

Cited by 2 (2 self)
 Add to MetaCart
, perturbation, global structure. Classification 35L45 Partially supported by National Natural Science Foundation of China 1 1. Introduction Consider the following quasilinear hyperbolic system ( v t \Gamma u x = 0 u t + p(v) x = \Gammaffu; ff ? 0; p 0 (v) ! 0 (1:1) which models the compressible flow
Global Perturbation Configurations in a Composite Disc System with an Isopedic Magnetic Field
, 2005
"... Accepted. Received; in original form We construct stationary global configurations of both aligned and unaligned logarithmic spiral perturbations in a composite disc system of stellar and isopedically magnetized gaseous singular isothermal discs (SIDs) coupled by gravity. Earlier models are generali ..."
Abstract
 Add to MetaCart
Accepted. Received; in original form We construct stationary global configurations of both aligned and unaligned logarithmic spiral perturbations in a composite disc system of stellar and isopedically magnetized gaseous singular isothermal discs (SIDs) coupled by gravity. Earlier models
Some properties of Noether charge and a proposal for dynamical black hole entropy
 Phys. Rev
, 1994
"... We consider a general, classical theory of gravity with arbitrary matter fields in n dimensions, arising from a diffeomorphism invariant Lagrangian, L. We first show that L always can be written in a “manifestly covariant ” form. We then show that the symplectic potential current (n − 1)form, Θ, an ..."
Abstract

Cited by 326 (4 self)
 Add to MetaCart
, and the symplectic current (n − 1)form, ω, for the theory always can be globally defined in a covariant manner. Associated with any infinitesimal diffeomorphism is a Noether current (n − 1)form, J, and corresponding Noether charge (n − 2)form, Q. We derive a general “decomposition formula ” for Q. Using
Transfection of small RNAs globally perturbs gene regulation by endogenous microRNAs. Nature Biotechnology
, 2009
"... microRNAs ..."
Global and regional climate changes due to black carbon,
 Nat. Geosci.,
, 2008
"... Figure 1: Global distribution of BC sources and radiative forcing. a, BC emission strength in tons per year from a study by Bond et al. Full size image (42 KB) Review Nature Geoscience 1, 221 227 (2008 Black carbon in soot is the dominant absorber of visible solar radiation in the atmosphere. Ant ..."
Abstract

Cited by 228 (5 self)
 Add to MetaCart
Figure 1: Global distribution of BC sources and radiative forcing. a, BC emission strength in tons per year from a study by Bond et al. Full size image (42 KB) Review Nature Geoscience 1, 221 227 (2008 Black carbon in soot is the dominant absorber of visible solar radiation in the atmosphere
Global Strichartz estimates for nontrapping perturbations
 of the Laplacian, Comm. Partial Differential Equations
"... The purpose of this paper is to establish estimates of Strichartz type, globally in space and time, for solutions to certain nontrapping, spatially compact perturbations of the Minkowski wave equation. Precisely, we consider the following wave equation on the exterior domain Ω to a compact obstacle, ..."
Abstract

Cited by 93 (10 self)
 Add to MetaCart
The purpose of this paper is to establish estimates of Strichartz type, globally in space and time, for solutions to certain nontrapping, spatially compact perturbations of the Minkowski wave equation. Precisely, we consider the following wave equation on the exterior domain Ω to a compact obstacle,
Ensemble forecasting at NCEP and the breeding method
 Mon. Wea. Rev
, 1997
"... The breeding method has been used to generate perturbations for ensemble forecasting at the National Centers for Environmental Prediction (formerly known as the National Meteorological Center) since December 1992. At that time a single breeding cycle with a pair of bred forecasts was implemented. In ..."
Abstract

Cited by 196 (15 self)
 Add to MetaCart
. In March 1994, the ensemble was expanded to seven independent breeding cycles on the Cray C90 supercomputer, and the forecasts were extended to 16 days. This provides 17 independent global forecasts valid for two weeks every day. For efficient ensemble forecasting, the initial perturbations to the control
Nonlinear perturbation of linear programs
 SIAM Journal of Control and Optimization
, 1979
"... Abstract. The objective function of any solvable linear program can be perturbed by a differentiable, convex or Lipschitz continuous function in such a way that (a) a solution of the original linear program is also a KarushKuhnTucker point, local or global solution of the perturbed program, or (b) ..."
Abstract

Cited by 68 (19 self)
 Add to MetaCart
Abstract. The objective function of any solvable linear program can be perturbed by a differentiable, convex or Lipschitz continuous function in such a way that (a) a solution of the original linear program is also a KarushKuhnTucker point, local or global solution of the perturbed program, or (b
Results 1  10
of
3,042