搜索结果: 1-15 共查到“理学 Filling”相关记录25条 . 查询时间(0.046 秒)
中国地质大学科学技术发展院李瑞，王生维，等，资源学院. Rock Mechanics and Rock Engineering，Geometry and Filling Features of Hydraulic Fractures in Coalbed Methane Reservoirs based on Subsurface Observations
煤层气井压裂；裂缝形态；充填特征。
2021/10/15
近期，中国地质大学资源学院王生维教授团队在岩石力学领域著名期刊《Rock Mechanics and Rock Engineering》上发表题为《Geometry and Filling Features of Hydraulic Fractures in Coalbed Methane Reservoirs based on Subsurface Observations》的研究成果。该文通过...
Sliced space-filling designs with different levels of two-dimensional uniformity
Asymmetric Balanced Computer experiment Sliced orthogonal array Sliced space-filling design
2016/1/25
We consider sliced computer experiments where priori knowledge suggests that factors may have different levels of importance, and so some factors need to be paid more attention than others. A new clas...
Extrinsic versus intrinsic diameter for Riemannian filling-discs and van Kampen diagrams
Riemannian filling-discs van Kampen diagrams
2015/8/26
The diameter of a disc filling a loop in the universal covering of a Riemannian manifold M may be measured extrinsically using the distance function on the ambient space or intrinsically using the ind...
The filling length of an edge-circuit \eta in the Cayley 2-complex of a finite presentation of a group is the minimal integer length L such that there is a combinatorial null-homotopy of \eta down to ...
The gallery length filling function and a geometric inequality for filling length
filling length filling function
2015/8/26
We exploit duality considerations in the study of singular combinatorial 2-discs ("diagrams") and are led to the following innovations concerning the geometry of the word problem for finite presentati...
The filling radius function R of Gromov measures the minimal radii of van Kampen diagrams filling edge-circuits w in the Cayley 2-complex of a finite presentation P. It is known that the Dehn function...
Iterative water-filling for Gaussian vector multiple access channels
channel capacity convex optimization Gaussian channels multiuser channels multiple-access channels multipleaccess communications multiple-antenna systems optimization methods power control water-filling
2015/8/11
We develop an efficient iterative water-filling algorithm to find an optimal transmit spectrum for maximum sum capacity in a Gaussian multiple access channel with vector inputs and a vector output. Th...
Filling the gap in the extragalactic census: A study at 21 cm and in the near -infrared
Galaxy The universe Optical detection The surface brightness system The Milky Way
2014/12/9
Fundamental to a complete understanding of galaxy properties, formation, and evolution is a thorough knowledge of the local galaxy population. Until we understand the nearest, most easily detectable g...
A method for filling gaps in solar irradiance and in solar proxy data
filling gaps solar irradiance solar proxy data
2011/8/17
Abstract: Data gaps are ubiquitous in spectral irradiance data, and yet, little effort has been put into finding robust methods for filling them. We introduce a data-adaptive and nonparametric method ...
A method for filling gaps in solar irradiance and in solar proxy data
method filling gaps solar irradiance solar proxy
2011/10/13
Data gaps are ubiquitous in spectral irradiance data, and yet, little effort has been put into finding robust methods for filling them. We introduce a data-adaptive and nonparametric method that allow...
Estimates of Densities and Filling Factors from a Cooling Time Analysis of Solar Microflares Observed with RHESSI
Estimates Densities Filling Factors Solar Microflares
2011/10/12
We use more than 4,500 microflares from the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) microflare data set (Christe et al., 2008, Ap. J., 677, 1385) to estimate electron densities a...
On filling minimality of simple Finsler manifolds
simple Finsler manifolds Metric Geometry Differential Geometry
2011/8/30
Abstract: This paper states a formula for the difference of the Holmes-Thompson volumes of two simple Finsler manifolds of arbitrary dimension, in terms of the boundary distances and their derivatives...
The Art of Space Filling in Penrose Tilings and Fractals
Art Space Penrose Tilings and Fractals
2011/9/14
Incorporating designs into the tiles that form tessellations presents an interesting challenge for artists. Creating a viable MC Escher like image that works esthetically as well as functionally requi...
Interaction and filling induced quantum phases of dual Mott insulators of bosons and fermions
Interaction quantum phases of dual Mott insulators bosons fermions
2010/11/24
Many-body effects are at the very heart of diverse phenomena found in condensed-matter physics.
One striking example is the Mott insulator phase where conductivity is suppressed as a result
of a str...
A Hierarchy of Local Symplectic Filling Obstructions for Contact 3-Manifolds
Local Symplectic Filling Obstructions Contact 3-Manifolds
2010/12/6
We generalize the familiar notions of overtwistedness and Giroux torsion in 3-dimensional contact manifolds, defining an infinite hierarchy of local filling obstructions called planar torsion, whose i...