13 Italian Undergraduates Join Facebook, but Keep a Critical Distance: “It is Useless, but I’m Using It” Paolo Ferri, Observatory on New Media NumediaBios & Department of Educational Sciences, University of Milan-Bicocca, Milan, Italy Nicola Cavalli, Observatory on New Media NumediaBios, University of Milan-Bicocca, Milan, Italy Andrea Mangiatordi, Observatory on New Media NumediaBios, Universi...

Seismic amplitudes contain important information which can be related to fluid saturation. The amplitude-versus-offset (AVO) analysis of seismic data based on Gassmann’s theory and approximation of the Zoeppritz equations, has played an central role in reservoir characterization. However, this standard technique faces a long standing problem, its inability to distinguish between partial gas and...

The universe provides numerous extremely interesting astrophysical sources of synchrotron X radiation. The Chandra X-ray Observatory and other X-ray missions provide powerful probes of these and other cosmic X-ray sources. Chandra is the X-ray component of NASA’s Great Observatory Program which also includes the Hubble Space telescope, the Spitzer Infrared Telescope Facility, and the now defunc...