Combination of frequency and amplitude-modulated model for the synthesis of normal and wheezing sounds.

Based on communication theory, this study proposes a model to synthesize normal and wheezing sounds. The model included five parts: the flow source as a transmitter, the frequency and amplitude-modulated (FM-AM) sounds, the accompanying noise as a modulator, the airway wall as a medium, and the microphone as a receiver. The hypothesis of modulation builds on that the deviation of frequency and amplitude of the sounds which cause from the deviation of collision speed of the air flow on the wall.

Electric compass aided global positioning system navigation for powered wheelchairs.

Powered wheelchairs are an important mobility aid for the elderly and for persons with disability. According to World Health Organization statistics, most of the accidents were due to personal mistakes; if there is an auto-navigating system such as auxiliary, mistaken manipulation will decrease efficiency. This study attempted to improve the global positioning system (GPS) navigation of electric powered wheelchairs (EPWs) through the addition of an electric compass (EC) and tested the navigation of EPWs with EC-aided and non-EC-aided GPS navigation along a 25 m road.

The Development of M3S-Based GPS Navchair and Tele-Monitor System.

The purpose of this study is to develop a M3S- Based GPS navigation system for power wheelchair. The wheelchair steered with GPS and electronic compass can move automatically toward a specific destination through a GIS-Map in the computer. The topic of this study is to help people with disabilities regain independence of transportation in specific areas of their daily activities.

Regulation by ultrasound treatment on the integrin expression and differentiation of osteoblasts.

It has been shown that ultrasound (US) stimulation accelerates fracture healing in the animal models and in clinical studies. However, the mechanism by which US achieves these outcomes is not clear. Here we investigated the effect of US stimulation on the differentiation of osteoblasts and osteoclastogenesis.