搜索结果: 31-45 共查到“Planck”相关记录52条 . 查询时间(0.124 秒)
AMES LABORATORY-MADE MATERIALS-Lab’s Materials Preparation Center provided alloy for Planck Mission
AMES LABORATORY-MADE MATERIALS WORLD alloy Planck Mission
<
2009/5/20
AMES, Iowa – Materials produced at the U.S. Department of Energy’s Ames Laboratory were launched into space on May 14 with the European Space Agency’s Planck Mission. Ames Laboratory’s Materials Prepa...
Herschel and Planck Missions to Study Cosmos Share Ride to Space
Herschel and Planck Cosmos Space
<
2009/5/7
Herschel and Planck are both ESA missions with important participation from NASA. NASA's Herschel Project Office and Planck Project Office are both based at JPL. A consortium of European-led institute...
Échelles de temps pour l'évolution quantique à petite constante de Planck
É chelles de temps pour l'évolution quantique à petite constante de Planck
<
2010/4/13
We present some recent results concerning the long time semiclassical approximation .
Global regularity of solutions of coupled Navier-Stokes equations and nonlinear Fokker Planck equations
Navier-Stokes equations nonlinear Fokker-Planck equations global existence.
<
2014/4/3
We provide a proof of global regularity of solutions of coupled Navier-Stokes equations and Fokker-Planck equations, in two spatial dimensions, in the absence of boundaries. The proof yields a priori ...
一类非线性系统Fokker-Planck方程的解法
非线性系统Fokker-Planck方程 随机输入 模型降阶
<
2008/12/12
通过对一类典型非线性反馈系统的分析,提出一处对一阶和二阶反馈非线性系统的稳态
Fokker-Planck方程的解析解法.根据这一方法,再利用最优降阶技术,提出高阶系统的近似
解,并将其与RDF方法得出的近似解在精度上加以比较,得出有益的结论.
The past, present, and future of demography and the role of the Max Planck Institute for Demographic Research
Ansley Coale below replacement fertility biodemography longevity Louis Henry Max Planck Institute Peter Laslett prediction
<
2008/12/9
Demography, within the memories of those now living,has been shaped by a few outstanding centers,the Institut National d'Etudes Demographiques,the Cambridge Group for the History of Population and Soc...
The past, present, and future of demography and the role of the Max Planck Institute for Demographic Research
Ansley Coale below replacement fertility biodemography longevity Louis Henry Max Planck Institute Peter Laslett prediction
<
2008/12/5
Demography, within the memories of those now living,has been shaped by a few outstanding centers,the Institut National d'Etudes Demographiques,the Cambridge Group for the History of Population and Soc...
Passage of Time in a Planck Scale Rooted Local Inertial Structure
Flow of time Temporal Transience
<
2008/4/22
It is argued that the `problem of time' in quantum gravity necessitates a refinement of thelocal inertial structure of the world, demanding a replacement of the usual Minkowski lineelement by a 4+2n d...
This is the table of contents and first chapter of Physics Meets Philosophy at the Planck Scale (Cambridge University Press, 2001), edited by Craig Callender and Nick Huggett. The chapter discusses th...
A Natural Mass Unit Hidden in the Planck Action Quantum
baryon quantum Compton Dirac topological
<
2008/4/9
0.138% above the neutron and 0.276% above the proton baryon mass a natural mass unit µ can be identified by extrapolating dimensionless Planck units h=c=1 to the System of Units (SI). Similar to...
Nonlinear Fokker-Planck Equation in the Model of Asset Returns
Nonlinear Fokker-Planck Equation Model Asset Returns
<
2010/12/17
The Fokker-Planck equation with diffusion coefficient quadratic in space variable, linear drift coefficient, and nonlocal nonlinearity term is considered in the framework of a model of analysis of as...
用变分法解Fokker—Planck方程计算核裂变几率
变分法 Fokker-Planck方程 裂变几率
<
2008/1/27
发展了一种用变分法解Fokker-Planck方程的方法,计算了一维核裂变几率,研究了F-P方程与Smoluchowski方程的关系,为推导多维的质量系数和粘滞系数随形变参量变化并具有交叉项的Smoluchowski方程和解位能形式比较复杂的多维的F-P方程打下了基础.
Fokker--Planck--Boltzmann方程的空间均匀解
FPB方程 光滑性 唯一性
<
2007/12/12
本文研究空间均匀的Fokker--Planck--Boltzmann方程. 对满足质量和动量守恒以及能量线性增长的解, 给出了其在任何时间区间$[\delta, T]\subset (0, \infty)$上的加权$L^{1}$和$L^{2}$估计. 利用这些结果以及碰撞算子已知的$L^{p}$和Sobolev估计, 我们建立了方程解的光滑性和唯一性.
On New Invariant Solutions of Generalized Fokker-Planck
Equation
Fokker-Planck equation potential symmetry invariant solutions
symbolic computation
<
2007/8/15
2004Vol.41No.5pp.665-668DOI:
On New Invariant Solutions of Generalized Fokker-Planck
Equation
YAO Ruo-Xia1,2,3 and LI Zhi-Bin1
1 Department of Computer Science, East Ch...
摘要对白噪声驱动随机系统的Fokker-Planck方程进行约化，求得约化方程的解析解，使
用局部解析解和Monte
Carlo结合方法求解常系数Fokker-Planck方程，并与常系数Fokker-Planck方程的精确解
进行对比，之后求解了变驱动力系统的行为. 数值模拟结果表明，有限解析/Monte
Carlo结合的方法，能成功求解一维Fokker-Planck方程，求解粒子数为10$^{...