In this paper we illustrate a novel Wireless Local Area Network Multiple Access Control (WLAN MAC) protocol whose allocation policy adopts a strategy similar to the token ring: the mobile stations access the channel upon receiving the token and release the channel by passing the token to the next user. The traffic is divided in two classes: Guaranteed Bandwidth (GB) and Best Effort (BE). The ba...

Introduction: Job stress is one of the main characteristics of modern life which is increasing and has been recognized as an important risk factor of cardiovascular diseases. The present study was conducted to determine the association between job stress at work environment and cardiovascular diseases. Materials and methods: A number of 300 persons including 150 cases and 150 controls were con...

This work presents a reactive control strategy for loading and sudden unloading of an elbow effort-compensation device controlled in force. Through this strategy, addition to individual's forearm weight, external load can be detected adaptively compensated via feed-forward force reference, facilitating the execution arbitrary movements by wearer. In case contact/load loss, power-aware is implem...