Motorised traffic is growing rapidly in many African cities, creating barriers to the movement of pedestrians. This paper analyses barrier effect roads Praia, capital Cabo Verde. We measured potential trips homes other people and food shops analysed distribution across areas social groups. The contributes literature by: 1) quantifying for first time an city; 2) mapping at city level, 3) develop...

A few separate initiatives from the robotics community to design and prove a mechanical automated solution have taken place. Here at the Pontificia Universidad Javeriana, in Colombia, we are working in this problem: on a previous project the mobile robot Ursula was developed (Rizo et al., 2003); and now we are working in a new mobile robot called Amaranta (Figure1). One part of the humanitarian...

Since 1994, TRL in collaboration with a number of road authorities and consultant partners have been engaged in extensive studies of the performance of low volume sealed roads within Southern Africa (Greening and Gourley, 1999). The roads included in service primary and secondary roads with ages varying from thirty years old to relatively new roads and specially constructed experimental section...

Injuries caused by traffic accidents cause many deaths and disabilities children. Road traffic injuries are the main cause of death between the ages of 15 and 19 years and is the second cause of death among 5 to 14 year olds. Children's attitudes about driving and safe use of roads formed in 11 years. Road traffic injuries is one of the five cause of disability among children. Most victims betw...

Roads cover a significant fraction of the land area in many municipalities. The public provision of roads means this land is exempt from the local property tax. Transferring roads from public to private ownership would not only remove maintenance costs from city budgets, but increase potential property tax revenue as well. This paper calculates the value of the land occupied by roads in sample ...

Roads encroaching into undeveloped areas generally degrade ecological and watershed conditions and simultaneously provide access to natural resources, land parcels for development, and recreation. A metric of roadless space is needed for monitoring the balance between these ecological costs and societal benefits. We introduce a metric, roadless volume (RV), which is derived from the calculated ...

The process of cell growth depends on a complex co-ordinated programme of macromolecular synthesis that can be tuned to environmental constraints. In eukaryotes, the mTOR [mammalian (or mechanistic) target of rapamycin] signalling pathway is a master regulator of this process, in part by regulating mRNA translation through control of the eIF4F (eukaryotic initiation factor 4F) initiation comple...

injuries caused by traffic accidents cause many deaths and disabilities children. road traffic injuries are the main cause of death between the ages of 15 and 19 years and is the second cause of death among 5 to 14 year olds. children's attitudes about driving and safe use of roads formed in 11 years. road traffic injuries is one of the five cause of disability among children. most victims...