We design an artificial boundary condition for the steady incompressible Navier-Stokes equations in streamfhction-vorticity formulation in a flat channel with slip boundary conditions on the wall. The new boundary condition is derived fiom the Oseen equations and the method of lines. A numerical experiment for the non-linear Navier-Stokes equations is presented. The artificial boundary conditio...

This reaffirmation of teachers has been a leading factor in the development of recent strategies for school improvement The reports by the Carnegie Task Force and the Holmes Group are two prominent examples of proposals aimed specifically at problems within the teaching profession. These reports are significant in that they have helped place teaching squarely at the center of current educationa...

The formation of bubbles by flow focusing of a gas and a liquid in a rectangular channel is shown to depend strongly on the channel aspect ratio. Bubble breakup consists in a slow linear 2D collapse of the gas thread, ending in a fast 3D pinch-off. The 2D collapse is predicted to be stable against perturbations of the gas-liquid interface, whereas the 3D pinch-off is unstable, causing bubble po...

A novel rectangular channel flow electrochemical cell for the study of liquid liquid interfaces is presented. The organic phase is immobilised by the use of a gelling agent, while the aqueous phase flows past the interface. This creates an asymmetric setup that allows us to establish diagnostic criteria to determine, for example, the direction of the ion transfer. The effects of varying flow ra...

In this paper, path loss (PL) model for IEEE 802.11n in large rectangular room is determined on basis of PL measurements. It is found that PL model can be described by a TGn channel model and free-space model at small distances with PL exponent of 2.67 and 2. At large distances PL model can be described by one-slope model with PL exponent of 1.6. Further, it is determined PL exponent increases ...

This paper describes the architecture and IC implementation of a rectangular-to-polar coordinate converter for digital communication applications. The architecture core uses small lookup ROMs, fast multipliers, and a single angle-rotation stage. Area and latency are reduced in comparison with traditional methods. The processor, implemented in 0.25m five-metal CMOS, has 14-b in-phase and quadrat...

Faulty blocks are expanded, by disabling nodes, to form rectangular faults in many existing works to facilitate the designing of deadlock-free routing schemes for meshes recently. In this paper, faulty blocks are di€used to be rectangular faults, which are composed of faulty and fault-di€used nodes. These rectangular faults are then shrunk, by recovering fault-di€used nodes, to form convex faul...

The motion of internal layers for three singularly perturbed reaction diiusion problems, including the Allen-Cahn equation, is studied in a two-dimensional dumbell-shaped domain. The channel region that connects the two attachments, or lobes, of the dumbell is taken to be rectangular. The motion of straight-line internal layers in the channel region is analyzed using an asymptotic projection me...

In this paper, a simple and accurate modeling technique that analyzes a non-rectilinear gate (NRG) transistor with a simplified trapezoidal approximation method is proposed. To approximate a non-rectangular channel shape into a trapezoidal shape, we extract three geometry-dependent parameters from post-lithographic patterns: the minimum channel length from the slices (Lmin), maximum channel len...

The paper considers the visco-elastic response of ice cover in a channel under an external load moving with constant speed along center line. has rectangular cross-section finite depth and width. fluid is inviscid incompressible its motion potential. covered by thin sheet frozen to walls. thickness varies linearly symmetrically across channel, being lowest at highest Ice deflections strains are...