Elements (Part Two)

Part Two

Part II of The Impact of AIDS provides summaries of selected studies referred to in earlier chapters. For each study, the summary gives a brief overview of the objectives and results of the research. Much of the usefulness of the results depends on how a study was carried out. The summaries give information about the methodology , the size of the sample and whether it was representative, whethe...

Calculation of Matrices of Field Elements . Part

The articles [8], [3], [10], [11], [4], [1], [5], [2], [13], [6], [7], [12], and [9] provide the notation and terminology for this paper. In this paper i denotes a natural number. Let K be a field and let M1, M2 be matrices over K. The functor M1 −M2 yielding a matrix over K is defined by: (Def. 1) M1 − M2 = M1 + −M2. One can prove the following propositions: (1) For every field K and for every...

Incompressible Finite Elements via Hybridization. Part I: The Stokes System in Two Space Dimensions

In this paper, we introduce a new and efficient way to compute exactly divergence free velocity approximations for the Stokes equations in two space dimensions. We begin by considering a mixed method that provides an exactly divergence-free approximation of the velocity and a continuous approximation of the vorticity. We then rewrite this method solely in terms of the tangential fluid velocity ...

Two New Quadrilateral Elements Based on Strain States

In this paper, two new quadrilateral elements are formulated to solve plane problems. Low sensitivity to geometric distortion, no parasitic shear error, rotational invariance, and satisfying the Felippa pure bending test are characteristics of these suggested elements. One proposed element is formulated by establishing equilibrium equations for the second-order strain field. The other suggested...

PART TWO Clinical Experiences