For some, Web 2.0 is a "simple" evolution of the current web; for others, Web 2.0 is a real revolution. Web 2.0 is, in fact, a "revolutionary evolution." Technically speaking, Web 2.0 is a "simple" evolution because it is not a technical "breakthrough," as it is essentially based on an aggregation...

Data from three supplemental mobility surveys conducted jointly with the Current Population Survey (CPS) in 1973, 1978, and 1981, were analyzed to investigate the determinants of occupational change by female workers in the American labor force. Results suggest that occupationally mobile female...

Diverse identities, some socially shared, arise from a person’s affiliation with multiple overlapping communities, which are non-disjoint subsets of persons in society. I prove that identification of each individual with binary preferences or their utility function representation, commonplace...