In developed economies, agglomeration is skill-biased: larger cities are skill-abundant and exhibit higher skilled wage premia. This paper characterizes the spatial distributions of skills in Brazil, China, India. To facilitate comparisons with developed-economy findings, we construct metropolitan areas for each these economies by aggregating finer geographic units on basis contiguous light nig...

One of the skills that all engineering professional must develop very extensively during their formation is the mental management of the three dimensional reality in which they develop their professional actions. This competence is called spatial skill, a cognitive skill which can be improved with proper training. We have developed a series of learning activities for students in order to acquir...

Previous research showed that children’s spatial language production predicts their spatial skills, but the mechanisms underlying this relation remain a source of debate. This study examined whether 4-year-olds’ spatial skills were predicted by their attention to task-relevant information—in tasks that emphasize either memory or language—above and beyond their spatial word production. Children ...

Nowadays the maintenance of production systems requires assistance of in formation technologies because of the decrease of expert workers We have presented remote maintenance mechanism which uses agents to diagnose facili ties in the factory But there is no distinguished mechanism and environment for automatic agent invocation We have proposed spatial programming for this purpose We noticed tha...