Short-term variability of solar wind number density, speed and dynamic pressure as a function of the interplanetary magnetic field components: A survey over two solar cycles

The variability of hourly values of solar wind number density, number density variation, speed, speed variation and dynamic pressure with IMF Bz and magnitude |B| has been examined for the period 1965–1986. We wish to draw attention to a strong correlation in number density and number density fluctuation with IMF Bz characterised by a symmetric increasing trend in these quantities away from Bz = 0 nT. The fluctuation level in solar wind speed is found to be relatively independent of Bz. We infer that number density and number density variability dominate in controlling solar wind dynamic pressure and dynamic pressure variability. It is also found that dynamic pressure is correlated with each component of IMF and that there is evidence of morphological differences between the variation with each component. Finally, we examine the variation of number density, speed, dynamic pressure and fluctuation level in number density and speed with IMF magnitude |B|. Again we find that number density variation dominates over solar wind speed in controlling dynamic pressure.

Going global: the Brazilian scripted film

This article departs from the assumption that a certain section of world cinema, usually defined as ‘independent’, has been evolving on the basis of good scripts. Between the late 1980s and early 90s, there has been a boom of new cinemas in the world, such as the new Iranian, Taiwanese, Japanese, Mexican, Argentine and Brazilian cinemas. A significant part of this production shows a renewed interest in local and national peculiarities of their respective countries, going against the grain of globalisation and its typical cultural dilution. Most of these films are also engaged in reassessing narrative cinema, as a kind of reaction against the deconstructive work carried out by postmodern cinema of the 1980s.Recent new cinemas are supported by a combination of local and international resources, derived from public and private sponsors at home, and funding agencies, festivals and TV channels abroad. In most cases funds are granted after the film script has been analysed and approved by commissions of experts. The New Brazilian Cinema, or cinema da retomada as it is locally called, has been enormously affected by this scheme, which has even caused a ‘script boom’ in Brazil in the past decade. The chapter examins the results of this process.