"The SCC Biopsy Tool" (name provided by current authors) is a double-bladed scalpel handle (manufactured and distributed by Surgidental Instruments, Deer Park, NY, USA) with two No. 11 scalpel blades (Swann-Morton, Sheffield, England) set in parallel, 1.5 mm apart (Figure 1). It provides an alternative to other partial biopsy methods and provides advantages over established techniques of shave ...

We propose a numerical method for computing transport and diffusion on a moving surface. The approach is based on a diffuse interface model in which a bulk diffusion–advection equation is solved on a layer of thickness ε containing the surface. The conserved quantity in the bulk domain is the concentration weighted by a density which vanishes on the boundary of the thin domain. Such a density a...

This paper proposes a method to determine the flutter derivatives of 2-dimensional streamlined cylinders by means of a modified indicial approach adapted to a Navier-Stokes solver using an Arbitrary Lagrangian Eulerian formulation. The method relies on heave or pitch motion imposed to the section according to smoothed ramp time histories and on the computational evaluation of the transient forc...

The obstacle problem is a linearized version of the problem of stretching an elastic membrane over an obstacle. One of its central features is that the solution will divide the original domain into a set of points where the membrane lies strictly above the obstacle and satisfies a partial differential equation, and its complement, where the membrane touches the obstacle. The fact that these set...

We examined the ways in which memories of previously seen obstacles can alter the stepping of walking cats. Cats were paused after the forelegs, but not the hindlegs, had stepped over an obstacle. Near the beginning of a variable delay period, the obstacle was lowered. On the subsequent step, the path of the hindlegs allowed us to make inferences about whether the memory of the obstacle was inf...

background and objectives: given the limited number of studies on ramadan fasting and military performance, we conducted this study to identify the effect of ramadan fasting on physical fitness performances in army cadets. methods: twenty healthy males were randomly selected from a larger sample group. the subjects were divided into fasting (n=10) and non-fasting (n=10) groups. they performed v...

A robotic intelligent wheelchair system based on obstacle avoidance and navigation functions Mohammed Alshraideh, Basel A. Mahafzah, Saleh Al-Sharaeh & Ziad M. Hawamdeh a Department of Computer Science, King Abdullah II School for Information Technology, The University of Jordan, Amman 11942, Jordan b Department of Special Surgery, Faculty of Medicine, The University of Jordan, Amman 11942, Jor...

We investigate the homogenization limit of a free boundary problem with space-dependent free boundary velocities. The problem under consideration has a well-known obstacle problem transformation, formally obtained by integrating with respect to the time variable. By making rigorous the link between these two problems, we are able to derive an explicit formula for the homogenized free boundary v...

In this paper we present a fast and accurate numerical scheme for the solution of a system of fourth-order boundary value problems associated with obstacle, unilateral and contact problems. The decomposition method and a modified form of this method are applied to construct the numerical solutions. The new approach provides the solution in the form of a rapidly convergent series with easily com...

The obstacle avoidance problem has been a well researched topic by many robotics researchers. We focus on one popular solution to this problem, the Curvature-Velocity Method(CVM). In Simmons’ original paper [5], differentially steered (DS) robots where not considered thoroughly. This paper presents a variation on CVM, specifically designed for DS robots. We show comparable results to that of Si...