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We have people in our surroundings who cannot move both their upper and lower limbs. Such people are completely paralyzed and have no connection with the outside world. The book is basically aimed at helping disabled people move around and interact with the environment with minimum effort. The book is about a bio medical engineering research project involving a motorized wheelchair controlled by facial movements. This is a next step in the joy- stick controlled wheelchair, because it does not need the efforts of the hands either. So if both the hands and legs of a person are not functional he...

Diversity in natural ecosystem is due to different environmental variables which affect vegetation composition. Such environmental factors sustain plant communities of a specific region. It is very difficult in developing countries to access to remote areas frequently. In Pakistan Swat Valley part of Hindu Kush range of mountain is one of the remote area where plant diversity of different regions have not been studied related to environmental factors. The current study of vegetation was formulated to study the different effect of environmental variables on plant species organization and...