选项 A 中 all sides are equal(四条边相等)和 all angles are acute(四个角都是锐角)不符合长方形特征;选项 C 中 all sides are different(四条边不同)和 all angles are obtuse(四个角都是钝角)不符合;选项 D 中 all sides are parallel(四条边平行)和 all angles are reflex(四个角都是优角)也...
The boundary of rectangular inner conductor is con-formally mapped into a closed curve which is nearly a rectangle, and its inscribed con-focal ellipse and outer connected confocal ellipse are conformally mapped into two con-centric circles, the geometrical average of the both is taken as its ...
A Robust Method of Improved Order for Convection-Diffusion Problems in a Domain with Characteristic Boundaries We consider a singularly perturbed two-dimensional convection-diffusion problem in a rectangle with flow parallel to the x-axis. On the inflow and outflow ... C.,Clavero,Prof.,... -...
The mean Euler characteristic and excursion probability of Gaussian random fields with stationary increments Let $X = {X(t), t\\\in \\\R^{N}}$ be a centered Gaussian random field with stationary increments and let $T \\\subset \\\R^N$ be a compact rectangle. U... D Cheng,Y Xiao...
As opposed to the 3D cubic grid, the body-centered cubic (BCC) grid has some favorable topological properties: each set of voxels in the grid is a 3-manifold, with 2-manifold boundary. Thus, the Euler characteristic of an object O in this grid can be computed as half of the Euler cha...
Department of Mathematical Sciences, Florida Institute of Technology, Melbourne, FLElsevier BVNonlinear AnalysisT. Kiguradze and V. Lakshmikantham, On the Dirichlet problem in a character- istic rectangle for higher order linear hyperbolic equations. Nonlinear Anal. 50(2002), No. 8, Ser. A: ...
necessary, but no actual // initXxx method is invoked, that is done later in the constructor // // This is taken from Xamarin.iOS's source code: // [Export ("initWithFrame:")] public UIView (System.Drawing.RectangleF frame) : base (NSObjectFlag.Empty) { // Invoke the init ...
[9]) is natural from the physical point of view since it approximates particle movements, and it is attractive in solving strong advection dominated diffusion equations. [22] constructed a second order characteristic finite element scheme for convection-diffusion problems. [23] presented a new MMO...
Based on the secondary electron emission avalanche model the Monte Carlo method is chosen to simulate the 2-dimensional surface charge distributions on PMMA and alumina wafers with planar circular and rectangle symmetrical electrodes,respectively. 基于真空闪络的二次电子发射雪崩(SEEA)模型,针对片式有机玻...
a thermal gradient zone corresponding to a lithosphere–asthenosphere transition. The average mantle velocities down to a depth of 300 km beneath the array are relatively high, exceeding values for other Precambrian cratons by 0.1–0.2 km/s, and cannot be modeled by reasonable mantle peridotite ...