1. Nasal and bronchial mucociliary clearance have been studied in ten non-smokers (aged 19-23 years). Nasal mucociliary transport was evaluated by measuring the transport rate of a single radioactive (99mTc) particle deposited on the nasal mucosa. Bronchial clearance was measured after inhalation of insoluble radioactive anionic particles (diameter 7.4 +/- 1.5 micrometer). The initial depositio...

A method of tracking mandibular movements has been refined using a computer-assisted radionuclide kinematics technique. Several sites of interest on the same tooth of complete dentures mounted on an articulator have been simultaneously labeled with radioactive material. Accurate reproduction of the movements of the various radioactive markers was observed. The mapping of the relative displaceme...

Blob trackers have become increasingly powerful in recent years largely due to the adoption of statistical appearance models which allow effective background subtraction and robust tracking of deforming foreground objects. It has been standard, however, to treat background and foreground modelling as separate processes — background subtraction is followed by blob detection and tracking — which ...

A tracking system with color and contour information is more efficient and robust than one with color or contour only. However, it is difficult to use both color and contour information. In this paper, we present an approach using the particle filter to fuse color and contour cues in tracking. First, we combine color and contour information in a Kalman filter to generate the proposal distributi...

The paper represents an effective and robust facial feature tracking approach based on the multi-cue particle filter. Both color and edge distributions are integrated into the filter to ensure the tracking accuracy. Sub-region color model is used to rapidly depict the spatial layout of each facial feature. Furthermore, the paper uses edge orientation histogram as a complementary feature to enha...

Much of the drama and complexity of fluid flow occurs because its governing equations lack unique solutions. The observed behavior depends on the stability of the multitude of solutions, which can change with the experimental parameters. Instabilities cause sudden global shifts in behavior. We have developed a low-cost experiment to study a classical fluid instability. By using an electromagnet...

ESTIMATION of cardiac output by the indicator-dilution method has been described by Kinsman, Moore, and Hamilton1 utilizing dye; however, radioactive methods for determination of cardiac output owe their inception to Prinzmetal and co-workers,2 who recorded radioactivity as a function of time by means of a counter over the heart after an intravenous injection of radioactive Na24. Nylin and Cela...

This paper presents designing an optimal adaptive controller for tracking control of robot manipulators based on particle swarm optimization (PSO) algorithm. PSO algorithm has been employed to optimize parameters of the controller and hence to minimize the integral square of errors (ISE) as a performance criteria. In this paper, an improved PSO using logic is proposed to increase the convergenc...