نتایج جستجو برای: spaced grid points ie

تعداد نتایج: 373344  

2007
Thierry Declerck Günter Neumann

In this paper we describe a parameterizable and domain-adaptive Information Extraction (IE) system (for German texts) and present some ideas on how this kind of system could effectively support Corpus Linguistics (CL) tasks. We also tentatively address the complementary question and look in which sense corpus linguistics can be beneficial to IE, specially in the case of automatic learning of te...

Journal: :CoRR 2016
David R. Wood

A three-dimensional grid-drawing of a graph represents the vertices by distinct points in Z (called grid-points), and represents each edge as a polyline between its endpoints with bends (if any) also at gridpoints, such that distinct edges only intersect at common endpoints, and each edge only intersects a vertex that is an endpoint of that edge. This topic has been previously studied in [1–5]....

Journal: :IEICE Transactions 2009
Xu Luo Fan Yang Xuan Zeng Jun Tao Hengliang Zhu Wei Cai

In this paper, we propose a Modified nested sparse grid based Adaptive Stochastic Collocation Method (MASCM) for block-based Statistical Static Timing Analysis (SSTA). The proposed MASCM employs an improved adaptive strategy derived from the existing Adaptive Stochastic Collocation Method (ASCM) to approximate the key operator MAX during timing analysis. In contrast to ASCM which uses non-neste...

2016
T. J. Fudge Neil Humphrey Joel T. Harper W. Tad Pfeffer Neil F. HUMPHREY Joel T. HARPER W. Tad PFEFFER

Water levels were measured in boreholes spaced along the entire length of Bench Glacier, Alaska, USA, for a period in excess of 2 years. Instrumented boreholes were arranged as nine pairs along the center line of the glacier and an orthogonal grid of 16 boreholes in a 3600m region at the center of the ablation area. Diurnal fluctuations of the water levels were found to be restricted to the lat...

2008
Mikhail Tolstykh

Today, many global spectral models apply the reduced grid (i.e. the grid where the number of points in longitude is gradually reduced while approaching the poles). The construction of the global finite-difference semi-Lagrangian SL-AV model [1] enables the implementation of the reduced grid: some part of calculations is carried out in space of Fourier coefficients in longitude. Also, the semi-L...

2001
A. Ardeshir Goshtasby

Given a large set of irregularly spaced points in the plane, an algorithm for partitioning the points into subsets and fitting a parametric curve to each subset is described. The points could be measurements from a physical phenomenon, and the objective in this process could be to find patterns among the points and describe the phenomenon analytically. The points could be measurements from a ge...

Journal: :SIAM J. Comput. 2007
Bin Fu Wei Wang

We develop a new method for deriving a geometric separator for a set of grid points. Our separator has a linear structure, which can effectively partition a grid graph. For example, we prove that for a grid graph G with a set of n points P in a two-dimensional grid, there is a separator with at most 1.129 √ n points in P that partitions G into two disconnected grid graphs each with at most 2n 3...

2005
Bin Fu Sorinel Adrian Oprisan Lizhe Xu

We introduce the concept of multi-directional width-bounded geometric separators and obtain an improved separator for grid graphs. This yields an improved exact algorithm for the protein folding problem in the HP-model. For a grid graph G with n grid points P , there exists a separator A ⊆ P such that A has at most 1.02074 √ n points, and G−A has two disconnected subgraphs each with at most 2 3...

N-propylsalicylidene based on silica as ion exchanger (IE) was used for the separation by complexation of Mn2+, Co2+, Ni2+, Cu2+, Hg2+, Cr3+, Fe3+, and UO22+ from their parent solutions. IE and its metal complexes are characterized by elemental analysis, electronic and infrared spectra, in addition to thermal analysis in atmospheric pressure. The mode of chelation and the proposed geometric str...

1999
Sergey Asvadurov Vladimir Druskin Leonid Knizhnerman

Two of the authors earlier suggested a method of calculating special grid steps for three point finite-difference schemes which yielded exponential superconvergence of the Neumann-to-Dirichlet map. We apply this approach to solve the two-dimensional timedomain wave problem and the 2.5-D elasticity system in cylindrical coordinates. Our numerical experiments exhibit exponential convergence at pr...

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