搜索结果: 16-30 共查到“理学 Divergence”相关记录55条 . 查询时间(0.046 秒)
The measure of Jensen-Fisher divergence between probability distributions is introduced and its theoretical grounds set up.
An $f$-divergence approach for optimal portfolios in exponential Levy models
f-divergence exponential Levy models optimal portfolio
2011/1/21
We present a unified approach to get explicit formulas for utility maximising strategies in Exponential Levy models. This approach is related to f-divergence minimal martingale measures and based on a...
We describe work on solutions of certain non-divergence type and therefore non-variational elliptic and parabolic systems on manifolds. These systems include Hermitian and affine harmonics which shou...
Shadowing, expansiveness and stability of divergence-free vector fields
divergence-free vector fields math
2010/11/22
Let X be a divergence-free vector field defined on a closed, connected Riemannian manifold. In this paper, we show the equivalence between the following conditions:
1. X is in the C1-interior of th...
The Harnack inequality and related properties for solutions to elliptic and parabolic equations with divergence-free lower-order coefficients
The Harnack inequality related properties elliptic
2010/11/15
We discuss the problem how "bad" may be lower-order coefficients in elliptic and parabolic second order equations to ensure some qualitative properties of solution such as strong maximum principle, H...
Free energy computations by minimization of Kullback-Leibler divergence: an efficient adaptive biasing potential method for sparse representations
Free energy Kullback-Leibler divergence
2010/11/17
The present paper proposes an adaptive biasing potential for the computation of free energy landscapes. It is motivated by statistical learning arguments and unifies the tasks of biasing the molecula...
Black hole entropy divergence and the uncertainty principle
Black hole entropy divergence uncertainty principle
2010/11/11
Black hole entropy has been shown by 't Hooft to diverge at the horizon. The region near the horizon is in a thermal state, so entropy is linear to energy which consequently also diverges. We find a s...
Flow partitioning and unstable divergence in fluviokarst evolution in central Kentucky
Flow partitioning unstable divergence fluviokarst evolution central Kentucky
2009/11/11
In fluviokarst landscapes flow may be partitioned into its surface and subsurface components as well as into diffuse and concentrated flow. The competition among these is hypothesized to be responsibl...
Evolutionary divergence in the feeding mechanism of fishes
Elasmobranchii Teleostomi Suction feeding Jaw mechanism
2009/10/20
After the divergence of chondrichthyans and teleostomes, the structure of the feeding apparatus also diverged.Hyoid morphology varies considerably among fossil and extant elasmobranchs and has been hy...
A Computation of the Evaporation over Finland during a Rainless Period based on the Divergence of the Water-vapor Flux
Computation Evaporation Rainless Period Water-vapor Flux
2009/6/19
A Computation of the Evaporation over Finland during a Rainless Period based on the Divergence of the Water-vapor Flux.
Divergence, Vertical Velocity and Conversion between Potential and Kinetic Energy in an Extratropical Disturbance
Divergence Velocity Conversion
2009/6/19
Divergence, Vertical Velocity and Conversion between Potential and Kinetic Energy in an Extratropical Disturbance.
A Determination of Horizontal Divergence in the Gulf Stream off Cape Lookout
Horizontal Divergence Gulf Stream off Cape Lookout
2009/3/9
A horizontal divergence of 2×10−5 sec−1 was determined by tracking three shallow drogues in the speed axis of the Gulf Stream. Concurrent bathythermograph soundings along a drogue track su...
Horizontal Divergence and Vorticity Estimates from Velocity and Temperature Measurements in the MODE Region
Horizontal Divergence MODE Region Vorticity Estimates
2009/3/7
Estimates of horizontal derivatives of velocity made by differencing velocity measurements are used to show that the observed velocity field due to low-frequency mesoscale motions during the prelimina...
Divergence of sun-rays by atmospheric refraction at large solar zenith angles
sun-rays atmospheric refraction large solar zenith angles
2009/3/4
For the determination of photolysis rates at large zenith angles it has been demonstrated that refraction by the earth's atmosphere must be taken into account. In fact, due to the modified optical pat...
Vertical Reynolds Stress Divergence in the Upper Ocean Associated with Linear Wind-Driven, Near-Inertial Waves of Finite Wavelength
Vertical Reynolds Stress Divergence Upper Ocean Linear Wind-Driven Near-Inertial Waves Finite Wavelength
2009/1/12
Study of a schematic linear, wind-driven, inertio–gravity wave model in the upper ocean finds resonant, near-inertial waves of finite horizontal wavelength to have both horizontal and vertical motions...