In the boundary representation (B-Rep) model, a three-dimensional (3D) surface is de ned by a set of ‘simpler surfaces’ called ‘patches’. Although there are many di erent ways to specify a patch, a common case is that of a 4-sided patch represented by a structured grid of points. For instance, this kind of data can easily be obtained from a CAD system, as it is the mapping of regularly spaced p...

In this paper, we develop a Hermite cubic spline collocation method (HCSCM) for solving variable-order nonlinear fractional differential equations, which apply C1-continuous nodal basis functions to an approximate problem. We also verify that the order of convergence HCSCM is about O(hmin{4−α,p}) while interpolating function belongs Cp(p≥1), where h mesh size and α derivative. Many numerical te...

BACKGROUND Anterior open treatment of the inguinal hernia with a tension-free mesh has reduced the incidence of hernia recurrence. The Lichtenstein procedure is the current reference technique for inguinal hernia treatment. Chronic pain has become the main postoperative complication after surgical inguinal hernia repair, especially following Lichtenstein. Preliminary experiences with a soft mes...

A diaphragmatic hernia is usually seen in childhood and it is rare in adults. We are reporting a case of a 73 years old male who presented with pain and distension of the abdomen, breathlessness and constipation. He was operated 10 years back for a diaphragmatic hernia, during which a splenectomy, omentectomy and a mesh repair were done. X-rays and CT scans of the chest and the abdomen showed a...

This paper presents a new method for decomposing environments of complex geometry into a navigation mesh represented by bounding geometry and a connectivity graph for real-time agent usage in virtual worlds. This is accomplished by the generation of a well-defined and high-coverage set of convex navigable regions and the connected gateways between them. The focus of this paper is a new automate...

This paper presents a method to generate valid 2D high order meshes with optimized geometrical accuracy. The high order meshing procedure starts with a straight sided mesh. High order points are initially snapped to the real geometry without taking care of the validity of the high order elements. An optimization procedure that both allow to untangle invalid elements and to optimize the geometri...

The prediction and control of excessive vibration are one the most important concerns in design development geared systems. For any gear set, parametric resonance is main source instability, resulting separation gears mesh chaotic behavior. In many works, modeled with rigid mountings, various analytical numerical approaches have been used to investigate dynamic characteristics system different ...

We give an alternative treatment and extension of some results of Itoh and Mahmoud on one-sided interval trees. The proofs are based on renewal theory, including a case with mixed multiplicative and additive renewals.

aims: it is very important to detect the coagulase-negative staphylococci, which produce the hospital infections. being one of the most expensive and time-consuming stages before the polymerase chain reaction (pcr), dna extraction is one of the primary stages of pcr. then, it should be noticed that the elimination of the stage might save time and costs. the aim of this study was to compare two ...