is one of the most important broadband wireless technologies and is anticipated to be a viable alternative to traditional wired broadband techniques due to its cost efficiency. Being an emerging technology, WiMAX supports multimedia applications such as voice over IP (VoIP), voice conference and online gaming. It is necessary to provide Quality of Service (QoS) guaranteed with different charact...

The user terminal The terminal provides a simple user interface consisting of a smart card system, keyboard, monitor, and printer. After inserting a smart card into the smart-card reader, the user keys in a password and selects the kind and amount of fuel. The user can check the smart card’s records and updated status. During refueling, the monitor displays the procedure’s progress. The printer...

This document is one of the parts of the electronic version of the PhD thesis by S F M van Vlijmen The goal of the PhD project was to get a better under standing of the problems with the integration of formal speci cation technique in the day to day software practice The approach followed was to execute a number of projects in cooperation with industry on realistic cases In this document is rep...

A new design for an immersive ground control station is presented that allows operators to monitor and control one or more semi-autonomous unmanned remote vehicles. This new ground station utilizes a virtual reality based visualization of the operational space and the graphical representation of multiple information streams to create a comprehensive immersive environment designed to significant...

Introduction Conclusions References

Simulation of a manufacturing cell requires the different kinds of simulation models of manufacturing stations that constitute the cell. However, a commercial station simulator only gives simulation mechanism for a limited kind of station, and its simulation model is fixed to the engineer. On the other hand, it is inefficient for the engineer to develop the dedicated simulation model and mechan...

Perhaps the most critical structural system aboard the Space Station is the Solar Alpha Rotary Joint which helps align the power generation system with the sun (Figure 1). The joint must provide structural support and controlled rotation to the outboard transverse booms as well as power and data transfer across the joint. The Solar Alpha Rotary Joint is composed of two transition sections and a...

This paper will give an overview about the Transportable Optical Ground Station (TOGS) of DLR’s Institute of Communications and Navigation. Furthermore, a short description of its project involvement will be given. OCIS codes: (060.4510) Optical communications; (200.2605) Free-space optical communication