An overview is given of finite volume central schemes for the numerical solution of systems of conservation and balance laws. Well balanced central schemes on staggered grid for the Saint-Venant model or river flow are considered. A scheme which is well balanced for channels with variable cross section is introduced. Finally, a scheme which preserves non static equilibria is introduced, and som...

Article history: Received 5 November 2015 Received in revised form 24 May 2016 Accepted 12 June 2016 Available online 17 June 2016

In this paper, a fast direct solver for incompressible Navier-Stokes equations with nite diierence methods on the half-staggered grid is presented. To achieve this, new algorithms for diagonalizing a semi-deenite pair are developed. Our fast solver can also be extended to three dimensional case. The motivation and related issues in using this second kind of staggered grid are also discussed.

Timely access to safe hospital care remains a major concern. Target bed-occupancy rates have been proposed as a measure of the ability of a hospital to function safely and effectively. High bed-occupancy rates have been shown to be associated with greater risks of hospital-associated infection and access block and to have a negative impact on staff health. Clinical observational data have sugge...

........................................................................................................2 Motivation..................................................................................4 Introduction and problem statement....................................................4 Methodology...............................................................................5 SUN Estimator.......

Secure hospital beds are vitally important for the assessment and treatment of mentally disordered accused persons. A forensic mental health system with an adequate level of hospital beds is essential for the courts and review boards to carry out of the mental disorder provisions of the Criminal Code. This article describes the results of a study that examined interprovincial differences in the...

OBJECTIVES To investigate the association between clinical need and hospital bed supply and utilization in Russia; and, to investigate these associations in areas where traditional Russian tuberculosis health care systems exist and where the directly observed therapy-short course (DOTS) strategy has been implemented. DESIGN Ecological study using 2002 routine data. MAIN OUTCOME MEASURES Hos...

A new mimetic finite difference scheme for solving the acoustic wave equation is presented. It combines a novel second order tensor mimetic discretizations in space and a leapfrog approximation in time to produce an explicit multidimensional scheme. Convergence analysis of the new scheme on a staggered grid shows that it can take larger time steps than standard finite difference schemes based o...

background: several epidemiological studies conducted on underground miner’s show that exposure to elevated levels of radioactive radon gas is expected to increase the risk of lung cancer. relative risk of lung cancer is almost linear with radon exposure. elevated concentrations of radon are not only reported within mines but also for closed indoor environment of general public houses. measurem...