Several studies have been carried out focusing on floater motion compensation1). However, the detailed algorithm for motion compensation is not described. The most simple motion compensation algorithm is simply to perform coordinate transformation. Fujitani2) applied coordinate transformation for sonic anemometer on ship. But due to the difference in the mechanism of wind speed measurement betw...

One-dimensional "sonic vacuum" type phononic crystals were assembled from a chain of polytetrafluoroethylene (PTFE,Teflon) spheres with different diameters in a Teflon holder. It was demonstrated that this polymer-based sonic vacuum, with exceptionally low elastic modulus of particles, supports propagation of strongly nonlinear solitary waves with a very low speed. These solitary waves can be d...

This is an electronic system that allows the vehicle to slow while approaching another vehicle and accelerate again to the preset speed when traffic is cleared. It also warns the driver or applies brake if there is a high risk of a collision. In this project we are going to develop the micro controller based automatic vehicle speed control system. Now-a-days we can see that more number of accid...

In this paper we present a new technique for on-line extraction of natural landmarks using ultra sonic sensors mounted on a mobile platform. By storing landmarks' positions in a reference map, we can easily achieve absolute localization in an indoor environment by doing matching between recently collected landmarks and the reference map. The matching procedure also takes advantage of compass re...

Based on a general theory of detonation waves with an embedded sonic locus that we have previously developed, we carry out asymptotic analysis of weakly curved slowly varying detonation waves and show that the theory predicts the phenomenon of detonation ignition and failure. The analysis is not restricted to near ChapmanJouguet detonation speeds and is capable of predicting quasi-steady, norma...

PURPOSE To compare marginal microleakage in porcelain veneer restorations following dental finishing using two types of instruments to test the hypothesis that microleakage will be less when teeth are prepared with sonic oscillating burs than when prepared with high-speed rotating burs. MATERIALS AND METHODS Fifty-six extracted human maxillary central incisors were selected and divided random...

We establish the existence of the viscous proole of an undriven divergent detonation wave for a model problem with small viscosity. It is known that there is a sonic point inside the reaction zone of a divergent detonation wave. As a consequence, the detonation wave proole is a transonic proole and the wave speed cannot be determined before the problem is solved. The wave speed may be interpret...

Aims. We present the basic equations and sample solutions for the steady-state global transonic solutions of the advection-dominated accretion flows (ADAFs) with causal viscosity prescription. The procedures of the stable numerical calculations and all explicit formula to obtain the solutions of ADAFs are also presented. Methods. We solve the transonic solutions of ADAFs by using the explicit n...

Programmable logic control (PLC) has many definitions according to application or function. It is a device that has the ability to program and execute many processes at the same time and it has a wide range of applications in many scientific fields. This paper presents the design and analysis for a car speed measurement on a run away by using remote sensing sensor. This technique is implemented...

The purpose of this in vitro study was to quantify the alterations on human root dentin permeability after exposure to different acid fruit juices and to evaluate the effect of toothbrushing with electric or sonic toothbrush after acid exposure. The root dentin of 50 extracted third molars was exposed with a high speed bur. Crowns were sectioned above the cementoenamel junction and root fragmen...