14,996 research outputs found
Looking for central nervous system involvement in congenital cytomegalovirus infection : is lumbar puncture necessary?
Facebook on College Campuses: Usage and Opinions of the Social Networking Site among College Students
Social Networking sites have emerged as college students’ number one source of communication. Facebook, ranked the number one SNS among college students, has gone from a student-only environment to the general public. In addition to exploring how college students are using the sire, I explore if students sex and year in school play a significant role in opinions about the site and how it is being used. Through a sample of 149 undergraduate college students, findings suggest that students seem to be using Facebook in the same ways and for the same reasons with little variation. Furthermore, my research proves that certain opinions of Facebook vary with students’ sex and year in school by older students have strong opinions of who is using the site and negative implications with females being more cautious of their privacy
Gated ‘communities’ - their lifestyle versus urban governance
Today there is a widespread fear of crime on a global scale. This can be seen as a response to social inequalities, social polarisation and the fragmentation of cities, which has been caused by neo-liberalism. Worldwide, an increasing number of higher income groups have looked to security measures, such as cameras, fences, walls and gates, to separate themselves from other people in the city. These physical measures, in combination with hired guards, replace the ‘older’ social control mechanisms, which are based on social cohesion within the community concerned. One may question whether those living in gated ‘communities’ indeed feel responsible for other urbanites. In other words, will such a hard closure (physically-marked segregation) lead to soft closure, reflected in social-cultural and political segregation. What is the impact of the lifestyle(s) of those living in gated communities on the dynamics of the city, urban identity and urban governance?
On the linear stability of vortex columns in the energy space
We investigate the linear stability of inviscid columnar vortices with
respect to finite energy perturbations. For a large class of vortex profiles,
we show that the linearized evolution group has a sub-exponential growth in
time, which means that the associated growth bound is equal to zero. This
implies in particular that the spectrum of the linearized operator is entirely
contained in the imaginary axis. This contribution complements the results of a
previous work, where spectral stability was established for the linearized
operator in the enstrophy space.Comment: Major revision, including a complete rewriting of Section
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