In this study, an automated adaptive mesh control scheme, based on local mesh modifications, is developed for the finite element simulations of 3D metal forming processes. Error indicators are used to control the mesh discretization errors, and a consecutive h-adaptive procedure is conducted. The mesh size field used in the h-adaptive procedure is processed to control the geometric approximatio...

The recon gurable mesh (rn-mesh) can solve a large class of problems in constant time, including problems that require logarithmic time by other, even shared memory, models such as the pram with a similar number of processors [3]. In this work we show that for the rn-mesh these constants can always be reduced to one, still using a polynomial number of processors. Given a recon gurable mesh that...

It was open for more than eight years to obtain an algorithm for computing the convex hull of a set of n sorted points in sub-logarithmic time on a reconfigurable mesh of size p n pn. Our main contribution is to provide the first breakthrough: we propose an almost optimal algorithm running in O((log logn)2) time on a reconfigurable mesh of size p n pn. With slight modifications this algorithm c...

conclusions results indicated that annular fluidized bed reactor’s adsorbers are useful techniques for vocs adsorption. comparison of two particle ranges indicates that in all concentrations and all flow rates of the experiments, smaller particle size adsorption are better. in superficial velocity above the minimum fluidization velocity, pressure drop of fluidized beds are less than the pressur...

The main objective of this paper is to investigate the relations of rubber size, rubber content, and binder content in determination of optimum binder content for open graded friction course (OGFC). Mix gradation type B as specified in Specification for Porous Asphalt produced by the Road Engineering Association of Malaysia (REAM) was used in this study. Marshall specimens were prepared with fo...

aims: the installation of intravenous catheter is an unpleasant and painful experience for many patients. then, it is necessary to provide new methods to either reduce or remove pain in the patients’ injection point. the aim of this study was to investigate the effects of positioning (either sitting or lying) during the installation of intravenous catheter on pain level and the following anxiet...

Our approach to deformation is based on the Finite Element Method (FEM). In this method, mesh size determines the computational requirements of a simulation. Larger meshes result in more degrees of freedom in the discretized problem, so solutions take more time to compute. This has motivated our work in Chapter 3, where we have tried a technique for simulating cuts that does not increase mesh s...

Mesh networks are among the most important interconnection network topologies for large multicomputer systems. Mesh networks perform poorly in tolerating faults in the view of worst-case analysis. On the other hand, such worst cases occur very rarely in realistic situations. In this paper, we study the fault tolerance of 2-D and 3-D mesh networks under a more realistic model in which each netwo...

OBJECTIVE To evaluate the biomechanical properties of a type of monofilament polypropylene mesh used to repair vaginal prolapse, as well as the effects of the inclusion of standard size orifices, called "helper orifices," on the interface resistance in the receiving area. MATERIAL AND METHODS Forty female Wistar rats, 3 month-old, received an implant of monofilament polypropylene mesh, measur...

The two-level penalty finite element methods for Navier-Stokes equations with nonlinear slip boundary conditions are investigated in this paper, whose variational formulation is the Navier-Stokes type variational inequality problem of the second kind. The basic idea is to solve the Navier-Stokes type variational inequality problem on a coarse mesh with mesh size H in combining with solving a St...