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spec: " It does , however , highlight the possibility that uncontrolled dynamics may not just contribute to fore and aft balance in walking but also to side-to-side balance , " said Ruina , an associate professor of theoretical and applied mechanics , who is also interested in the energetics of rowing , biking , walking , bracheating and motion in general . As we did not land at Boston , in consequence of some detention at the wharf , until after dark , I received my first impressions of the city in walking down to the Custom-house on the morning after our arrival , which was Sunday . When the operation is successful , carefully selected patients report significant improvement in walking distance , weight , and quality of life . Such care may entail a change in job , a change in walking habits , and most importantly , special shoes . Group work and discussion help to enhance their communication skills and to express their views on complex social and political issues and to see the link between these issues and what is taught in school . The second speaker is Dennis Brutus , exile from South Africa , poet , and Professor of African Literature at the University of Pittsburgh . The evidence must be sufficiently complete to permit the DDS medical consultant to make an independent determination about the nature , severity , and probable duration of the individual 's impairment ( s ) . Few patients in AIS 2-3 were affected , but disability was higher in AIS classes 4 and 5 , with difficulty in walking , taking public transport , dressing , washing and dealing with paperwork . Such a network aims at close collaboration between all parties in the network . In a 30-day rapid prototyping effort , MITRE addressed a problem highlighted by the Chief of Staff of the Air Force , General John Jumper .